the influence of turtle island tanjung benoa bali on turtle population in the world
DESCRIPTION
Pengaruh Pulau Penyu Tanjung Benoa Bali Terhadap Populasi Penyu di DuniaTRANSCRIPT
THE INFLUENCE OF TURTLE ISLAND
IN TANJUNG BENOA BALI ON TURTLE POPULATION
IN THE WORLD
Scholarly Paper
Submitted to fulfill task of scholarly paper writingin SMA Negeri 1 Sumedang school year 2014/2015
Written by:TENDI NUGERAHA WIJAYA
XII IPA 1
121310308
COVER PAGE
SEKOLAH MENENGAH ATAS NEGERI 1 SUMEDANG
Jalan Prabu Geusan Ulun no. 38 Sumedang
2014
i
APPROVAL PAGE
THE INFLUENCE OF TURTLE ISLAND
IN TANJUNG BENOA BALI ON TURTLE POPULATION
IN THE WORLD
Approved By:
First Adviser,
Hj. Lin Gustini, S.Pd.
NIP 19650803 198703 2 007
Second Adviser,
Acih Mintarsih, S.Pd., M.MPd.
NIP 19641230 198703 2 003
The Principal,
Drs. Yosep Raharja, M.MPd.
NIP 19621126 198703 1 011
Homeroom Teacher,
Dede Juangsih, S.Pd.
19630727 198703 2 005
ii
DEDICATION PAGE
This paper is dedicated to my parents and my
sister.
For their endless love, support, and
encouragement.
“A fear will only make you weak and lose confidence.
iii
Ignore the fear and proceed your step.“
iv
PREFACE
Firstly, let’s praise and gratitude to God that has given an abundance of
grace and help, so that the writer can finish writing this paper well. This paper is
done in order to fulfill the final task of natural science program in SMA Negeri 1
Sumedang.
Various challenge and problems have been experienced by the author on
writing this paper. But because of the help, guidance, and motivation from the
various side, the writing of this paper can be completed well. Therefore, the
author would like to thank to:
1. Mr. Drs. Yosep Raharja, M.MPd as The Principal of SMA Negeri 1
Sumedang
2. Mrs. Hj. Lin Gustini, S.Pd. as the material adviser who has guided the
writer in writing the paper.
3. Mrs. Acih Mintarsih, S.Pd., M.MPd. as the technical adviser who has
helped me in correcting the English translation in this paper.
4. Mrs. Dede Juangsih, S.Pd. as the homeroom teacher who has given the
spirit to her students to finish the paper well.
5. My beloved parents and grandmother who always motivate, pray and
support me in study.
6. My sister, who always helped and guided me in writing this paper.
v
7. My dearest deceased mother who always exists in my heat and become a
reason for the writer in reaching dreams.
8. All of my friends who have become my second family who always asked
my paper progress and it made the writer motivated to finish the paper
well.
In the end, the writer wishes that Allah SWT pleased to reply all the
people goodness who have helped in writing this paper. Hopefully, this paper will
give the good advantage to the readers.
Sumedang, September 2014
The Writer
vi
LIST OF CONTENTS
COVER PAGE......................................................................................................................i
APPROVAL PAGE.............................................................................................................ii
DEDICATION PAGE........................................................................................................iii
PREFACE...........................................................................................................................iv
LIST OF CONTENTS........................................................................................................vi
LIST OF IMAGES...........................................................................................................viii
LIST OF TABLES..............................................................................................................ix
CHAPTER I INTRODUCTION..........................................................................................1
1.1. Background..........................................................................................................1
1.2. Problem Formulation...........................................................................................2
1.3. Research Purpose.................................................................................................2
1.4. Time and Place of Research.................................................................................3
1.5. Methods and Technique of Research...................................................................3
1.5.1. Methods of Research....................................................................................3
1.5.2. Technique of Research.................................................................................3
1.6. The Systematics Writing......................................................................................4
CHAPTER II ITERATURE REVIEW................................................................................5
2.1. Turtle....................................................................................................................5
2.2. Turtle Breeding..................................................................................................10
2.3. Turtle Island Tanjung Benoa Bali......................................................................12
2.3.1. Tanjung Benoa...........................................................................................12
2.3.2. Turtle Island As The Recreation Place......................................................12
2.3.3. Turtle Island As The Breeding Place.........................................................13
CHAPTER III PROBLEM DISSCUSSION......................................................................14
3.1. Current Turtle Population..................................................................................14
3.1.1. World’s Most Threatened Turtle Population.............................................15
vii
3.1.2. World’s Most Healthiest Turtle Population...............................................16
3.2. Threats on Turtle................................................................................................18
3.3. The Influence of Turtle Island on Turtle Population.........................................25
3.3.1. The Positive Impact...................................................................................25
3.3.2. The Negative Impact..................................................................................27
3.4. The Benefits of Turtle........................................................................................28
3.5. The Way To Preserve The Turtle Population....................................................30
CHAPTER IV CLOSING..................................................................................................31
4.1. Conclusion.........................................................................................................31
4.2. Suggestion..........................................................................................................32
BIBLIOGRAPHY................................................................................................................x
BIOGRAPHY.....................................................................................................................xi
viii
LIST OF IMAGES
Image 2. 1 Green Turtle.......................................................................................................5
Image 2. 2 Hawksbill Turtle................................................................................................6
Image 2. 3 Kemp's Ridley Turtle.........................................................................................7
Image 2. 4 Olive Ridley Turtle............................................................................................8
Image 2. 5 Leatherback Turtle.............................................................................................9
Image 2. 6 Flatback Turtle.................................................................................................10
Image 2. 7 Loggerhead Turtle............................................................................................11
ix
LIST OF TABLES
Table 2. 1 Scientific Classification of Green Turtle............................................................5
Table 2. 2 Scientific Classification of Hawksbill Turtle......................................................6
Table 2. 3 Scientific Classification of Kemp’s Ridley.........................................................7
Table 2. 4 Scientific Classification of Olive Ridley Turtle..................................................8
Table 2. 5 Scientific Classification of Leatherback Turtle..................................................9
Table 2. 6 Scientific Classification of Flatback Turtle........................................................9
Table 2. 7 Scientific Classification of Loggerhead Turtle.................................................10
Table 3. 1 World’s Most Threatened Turtle Population…………………………………15
Table 3. 2 World’s Most Healthiest Turtle Population…………………………………..17
x
CHAPTER I
INTRODUCTION
1.1. Background
It has been known for a long time, Bali is famous for its natural beauty and
the culture which make Bali become an interesting tourism object for domestic
and foreign tourists. The tourists who come to Bali are very fond of the presence
of the tourism objects which are beautiful and clean. There are cultural tourism
object such as Garuda Wisnu Kencana and Bajra Sandhi Monument and natural
tourism objects as Kuta Beach, Tanah Lot, Bedugul Lake and Tanjung Benoa. In
Tanjung Benoa is available a transportation to Turtle Island, that is a live place for
turtle and other animals. Turtle Island has a clean beach, sandy and ramps beach
and also has an intact ecological system that makes it suitable as a place for turtle
to live.
The existence of Turtle Island is not only as an interesting tourism object,
but also as turtle breeding for protected animals. Turtle is a marine animal which
is currently the world's turtle populations which are in a worrying state. As the
species which has vulnerable life circle naturally, the continuity of turtle
populations is getting threatened because of increasing human activity. These
activities include turtle habitat destruction and illegal trade of turtle meat by
people who are not responsible.
1
From seven species of sea turtles in the world, the number of leatherback
turtles decreased from approximately 115,000 adult female turtles to less than
3,000. Leatherback turtles has decreased 97% in the last 22 years. According to
The World Conversation Union (IUCN), an endangered species of sea turtle is the
Kemp's Ridley and hawksbill. Both of them entered into the red list of endangered
species. In addition, four other turtle species are also at risk of extinction,
although it is not in a short time.
Based on the problems above, this research is given the title "THE
INFLUENCE OF TURTLE ISLAND IN TANJUNG BENOA BALI ON
TURTLE POPULATIONS IN THE WORLD".
1.2. Problem Formulation
Based on the background that have been presented, the problems
formulation in a scientific paper is as follows
1. How is the condition of Turtle Island as tourist spot and turtle breeding?
2. How is the influence of Turtle Island on turtle population in the world?
3. How to conserve sea turtles in the world?
1.3. Research Purpose
This paper is organized with the following purposes
1. To determine the situation of Turtle Island Tanjung Benoa Bali as a
tourism place and a turtle breeding.
2
2. To determine the effect of Turtle Island Tanjung Benoa Bali on turtle
populations in the world.
3. To know the way to preserve the turtles in the world.
1.4. Time and Place of Research
The research was conducted by the author at the time of following the
activity of Study Tour Sumedang Bali on 19 – 26 June 2014 in several tourism
objects in Bali. In addition, the author also conducted research through other
sources that have relevance to the research by the author after the activity of Study
Tour is completed.
1.5. Methods and Technique of Research
1.5.1. Methods of Research
In organizing this scientific paper, the author used descriptive research
method.
1.5.2. Technique of Research
1. Literature Study
This method is done by collecting data from a variety of relevant sources
such as books and internet, browsing articles related to the discussion of the
problem.
2. Interview
This method is done by directly asking the respondent and aims to obtain
information related to the discussion of the problem.
3
1.6. The Systematics Writing
This scientific paper entitled "The Influence of Turtle Island in Tanjung
Benoa Bali on Turtle Population in The World" which consists of
1. CHAPTER I Introduction, discusses the basic things in this paper, which
consists of: background, problem formulation, the purpose of research,
time and place of the research, methods and techniques of research and
systematic writing.
2. CHAPTER II Literature Review, discusses the basic theories, which
describes a study on the condition of Turtle Island Tanjung Benoa Bali as
a tourist spot and a turtle breeding.
3. CHAPTER III Problem Study, contains discussion of the data obtained by
literature study and interviews. The data is about the influence of Turtle
Island Tanjung Benoa Bali on turtle population in the world and ways to
conserve sea turtles.
4. CHAPTER IV Closing, the last part of this paper, which contains
conclusions and suggestions from the author.
4
CHAPTER IILITERATURE REVIEW
2.1. Turtle
Turtle is one of the most ancient creatures on earth. Seven species that can
be found until now have been existed for 110 million years ago, since the time of
dinosaurs. Turtle shell or carapace is efficient to swim in the water. Unlike
tortoises, turtles can’t retract their legs and head into their shell. Their color is
varies between yellow, green and black depend on the species. The seven species
of turtles that will be described below:
1. Green Turtle
The green sea turtle is a large sea turtle of the family Cheloniidae. It is the only
species in the genus Chelonia. Its range extends throughout tropical and
subtropical seas around the world, with two distinct populations in the Atlantic
and Pacific Oceans. The common name comes from the usually green fat found
beneath its carapace. Unlike other members of its family, such as the hawksbill
sea turtle, C. mydas is mostly herbivorous. The adults usually inhabit shallow
lagoons, feeding mostly on various species of seagrasses.
Table 2. 1 Scientific Classification of Green Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinesFamily CheloniidaeGenus CheloniaSpecies C. mydas
5
Image 2. 1 Green Turtle
2. Hawksbill Turtle
This turtle has a flat body shape, with a carapace as protector, and fins like
arm is adapted to swim in the ocean. Hawksbill shell can change color, according
to the water temperature. Although these turtles spent half of his life in the ocean,
sometimes they also come to the shallow lagoons and coral reefs.
This species has spread throughout the world, with two subspecies found
in the Atlantic and Pacific. E. imbricata imbricata is the Atlantic subspecies,
while E. imbricata bissa is a subspecies in the Indo-Pacific region.
The food of Hawksbill turtle specialize on certain prey, such as sea
sponges which are the main food of Hawksbill. Beside sponges, hawksbill also
feeds on algae and cnidarians, comb jellyfish, jellyfish and other sea anemones.
Table 2. 2 Scientific Classification of Hawksbill Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily CheloniidaeGenus EretmochelysSpecies E. imbricata
3. Kemp’s Ridley Turtle
Kemp's ridley is a small sea turtle species, reaching maturity at 60–90 cm
(24–35 in) long and averaging only 45 kg (99 lb). Typical of sea turtles, it has a
dorsoventrally depressed body with specially adapted flipper-like front limbs and
6
Image 2. 2 Hawksbill Turtle
a beak. The Kemp's ridley turtle is the smallest of the sea turtles, with adults
reaching about 2 feet in length and weighing up to 100 pounds.
The adult Kemp's ridley has an oval carapace that is almost as wide as it is
long and is usually olive-gray in color. The carapace has five pairs of costal
scutes. In each bridge adjoining the plastron to the carapace, there are four
inframarginal scutes, each of which is perforated by a pore. The head has two
pairs of prefrontal scales.
Hatchlings are black on both sides. The Kemp's ridley has a triangular-
shaped head with a somewhat hooked beak with large crushing surfaces. This
turtle is a shallow water benthic feeder with a diet consisting primarily of crabs.
Table 2. 3 Scientific Classification of Kemp’s Ridley
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily CheloniidaeGenus LepidochelysSpecies L. kempii
4. Olive Ridley Turtle
Olive ridley turtles (Lepidochelys olivacea) are the smallest marine turtle,
living in warm waters close to shore as adults. Olive ridley turtles live in warm
waters in the region of the Pacific, Indian and Atlantic. Female olive ridleys take
part in mass nestings that can involve 150,000 individual turtles crawling up a
beach at night to find a spot for their clutch of around 100 eggs.In some places in
7
Image 2. 3 Kemp's Ridley Turtle
India and Mexico this turtle came in thousands to spawn together on the beach,
which is called as "arribadas".
Table 2. 4 Scientific Classification of Olive Ridley Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily CheloniidaeGenus LepidochelysSpecies L. olivacea
5. Leatherback Turtle
Leatherback turtles (Dermochelys coriacea) is the largest turtle in the
world and the fourth largest reptile in the world after three types of crocodiles.
Even though the way of walking is slow, but when swim the turtle is the fastest
reptile in the world at speeds up to 35 Km per hour. This species can be easily
identified from its carapace that is shaped like the lines on the star fruit. Carapace
is not covered by bone, but only covered by skin and oily flesh. Leatherbacks are
the only family members of Dermochelyidae who are still alive.
Most of the leatherback turtle is carnivores, especially in the adult phase of
their life cycle. The prey is consists of proto chordates or invertebrates, which can
be caught in shallow marine or estuarine habitats. Leatherback turtles also prey on
jellyfish, tunicates, sea urchins, bryozoans, bivalves, snails, shrimp, crab, rock
lobster, and sipunculid worms. Besides the jellyfish, leatherback turtles also eat
other soft-bodied organisms, such as tunicates and squid.
8
Image 2. 4 Olive Ridley Turtle
Table 2. 5 Scientific Classification of Leatherback Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily DermochelyidaeGenus DermochelysSpecies D. coriacea
6. Flatback Turtle
Adult flatback turtles have a low-domed carapace, with upturned edges,
which is approximately 90-95cm long. The carapace is olive to grey coloured and
the plastron is cream coloured. Flatback hatchlings have grey carapaces with the
scutes distinctively outlined in black. The plastron and the edges of the carapace
are white.
Flatback turtles are usually found in bays, shallow, grassy waters, coral
reefs, estuaries, and lagoons on the northern coast of Australia and off the coast of
Papua New Guinea. It eats a variety of organisms such as seaweeds, marine
invertebrates, including mollusks, jellyfish, shrimp and fish. Flatback also
consume soft corals, sea cucumbers and other soft-bodied creatures.
Table 2. 6 Scientific Classification of Flatback Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily CheloniidaeGenus NatatorSpecies N. depressus
9
Image 2. 5 Leatherback Turtle
Image 2. 6 Flatback Turtle
7. Loggerhead Turtle
Compared with other turtle, loggerhead turtle has a large head and
powerful jaws. This is allow to destroy crabs, lobsters, and other hard-bodied
prey. In the waters off, they usually float on the surface. They stand near the base
in estuaries and bays, and only up to the surface to breathe. Loggerhead turtles
breed only every 2 years or longer, and spawn up to 5 times, each time about 100
grains. Loggerhead sea turtle is omnivorous, feeding mainly on bottom living
invertebrates, such as gastropods, bivalves, and decapods.
Table 2. 7 Scientific Classification of Loggerhead Turtle
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder TestudinataFamily CheloniidaeGenus CarettaSpecies C. caretta
2.2. Turtle Breeding
Turtle breeding need approximately 15 – 50 years to be able to mate.
During the mating period, the male turtle attract female by rubbing their head or
biting female’s neck. The male then hooked his body to the back of the female’s
shell. Then he folded the long tail under the female’s shell. Some males can
compete to grab the attention of the female.
When the time of turtle breeding is comes, only the female turtles who will
go up to the beach to lay their eggs. Turtles will lay eggs only in a place he
10
Image 2. 7 Loggerhead Turtle
usually lay eggs. Although the turtle has been swimming around the world, but
when the breeding period comes, the turtle will always return to the same beach.
Parent turtles will come back to the same beach to lay eggs after 2-3 years. A
mother usually go up to the beach 5 times in 1 nesting period, with an interval of
2 weeks. Usually the time they chose is in the night because the temperature is
cooler and few predators.
The turtle’s parent spawn 50-150 eggs, depending on the type of nest
depth between 50-80 cm. Turtle eggs are very delicate and very liked by the
predators. Female turtle will not guard the nest, after spawning, the parent will
close the nest with sand using the back fin, then it returned to the sea. This process
occurs for about 3 hours.
After the spawning period is finished, the parent turtle will return to the
sea. Turtle egg incubation period is 45-60 days. The nest temperature will decide
the gender of the turtle. If the temperature is low, it will produce more turtles with
the male sex as the opposite applies.
Newly hatched turtle, commonly called hatchlings. It will find a way to the
nest surface best for 3 to 7 days, then the hatchlings will come out from the nest at
night because the temperature is cooler and to avoid the threat of the predators.
Hatchlings that have been out of the nest will go directly to the sea. When the
natural breeding process is happen, according to data from World Wildlife Fund
(WWF) from 1000 hatchlings, only one who will survive to adult.
11
2.3. Turtle Island Tanjung Benoa Bali
2.3.1. Tanjung Benoa
One of beach which is known as the paradise of water tourism object in
Bali Island is Tanjung Benoa. The beach is located in the district of Tanjung
Benoa, Badung regency. Tanjung Benoa is one of the beach which has the white
sand and the quite wave, make this beach perfect for family holiday destination.
This place is good for tourists who love water sports. Various water sports activity
in this beach is banana boat, jet ski, parasailing, snorkeling, and many more.
Beside the water sport, another charm of this beach is turtle island. It is
called the turtle island, because the island is the place for various turtle species
which are already scarce.
2.3.2. Turtle Island As The Recreation Place
Turtle island is a small delta which is covered by mangrove forests, with
the with sand, calm waves and right facing the port of Benoa. Turtle island is
located in the village of Tanjung Benoa, District of South Kuta, Badung Regency.
The distance to this site from Denpasar City approximately 27 miles and
approximately 35 minutes from Ngurah Rai Airport if using the motor vehicle by
first crossing with the motorboat from the port of Benpoa. The used boat is bare
glass boat that enable the traveler to see the beautiful underwater scenery of
Southern Bali.
In this island, the visitors can see the turtle eggs which is still in cramps, a
small turtle, teen turtle, up to adult turtles who ready to be parents. The types of
12
turtles are not only one, but there are several types. Beside that, there are also the
other animal in this location such as monkeys, birds, snakes, bats and others.
2.3.3. Turtle Island As The Breeding Place
In the beginning this location is to serve as a breeding place because turtles
are marine turtle which are protected, but in reality many hunters hunt turtles for
sale. They hunt as much advantage with hunting turtles not irresponsibly. In fact,
the numbers of turtles are fewer and fewer.
Therefore, to maintain the populations of turtles, World Wildife Fund
(WWF) and the Local Government chose this location as a place of captivity. This
location was developed not only known as a turtle breeding locations, but also as
tourist sites.
As its name, this small island is a breeding turtles place. This location is
used as a turtle breeding place because it has an intact ecological system, clean
beach and maintained, and lush mangrove forest.
There are shelter ponds or tanks which are specifically provided to
accommodate and care for turtles newly hatched to adult. The age of turtles at
Turtle Island even reached seventy years. There are several types of turtle which
is bred and protected such as the green turtle, olive ridley turtles, hawksbill, and
flatback. Travelers who come can hold the turtles directly, feed, take pictures, and
get into the breeding pond.
13
CHAPTER IIIPROBLEM DISSCUSSION
3.1. Current Turtle Population
Turtle population is being threatened. It is estimated that more than 7.700
turtles become victim of fishing or net arrest each year. It is only from not
accidental net and fishing arrest in the sea. If arresting is accidentally included, the
number would be much larger. Turtles used as meals like turtle soup, food or
jewelry. Their lives are threatened as a result of some human behavior. Human
activity now threatens the entire human life.
Top sea turtle experts from around the globe have discovered that almost
half (45%) of the world’s threatened sea turtle populations are found in the
northern Indian Ocean. The study also determined that the most significant threats
across all of the threatened populations of sea turtles are fisheries by catching,
accidental catching of sea turtles by fishermen targeting other species, and the
direct harvest of turtles or their eggs for food or turtle shell material for
commercial use.
The report, done by the IUCN Marine Turtle Specialist Group (MTSG) of
the International Union for the Conservation of Nature (IUCN) and supported by
Conservation International (CI) and the National Fish and Wildlife Foundation
(NFWF), was a collaboration of over 30 experts from 6 continents and more than
20 countries with diverse expertise in all aspects of sea turtle biology and
conservation. The study, designed to provide a blueprint for conservation and
14
research, evaluated the state of individual populations of sea turtles and
determined the most threatened populations, as well as the healthiest populations.
3.1.1. World’s Most Threatened Turtle Population
Four of the seven sea turtle species have populations among the world's
most threatened. Almost half (five) of these populations are found in the northern
Indian Ocean, specifically on nesting beaches and in waters within Exclusive
Economic Zones (EEZs) of countries like India, Sri Lanka, and Bangladesh. Other
areas that proved to be the most dangerous places for sea turtles were the East
Pacific Ocean (from the U.S. to South America) and East Atlantic Ocean (off the
coast of west Africa.
Table 3. 1 World’s Most Threatened Turtle Population
No. Species HabitatKey Nesting
SiteThe Causes
1. Olive Ridley Turtle(L.olivacea)
West Indian Ocean
India and Oman - Trawl bycatch
- Consumption of eggs and turtle
- Coastal development and shipping
Arribada population in the Northeast Indian Ocean
India - Intense pressures from trawl bycatch
- Consumption of turtle eggs and meat
- Development of major shipping
ports along the coast of India
Northeast Indian Ocean
India and Sri Lanka
- Widespread decline in turtle nests beach
- Trawl bycatch
- Consumption of turtle eggs and meat
2. Loggerhead Turtle
Northeast Indian Ocean
Sri Lanka, Bangladesh and
- Fisheries bycatch in trawls and nets
15
(C.caretta) Myanmar - Ongoing development of coastal areas where they nest
Northeast Atlantic Ocean
Cape Verde - Consumption of meat and eggs
- Bycatch in Cape Verde and in feeding areas along the African mainland coast
North Pacific Ocean
Japan - Severe bycatch in Mexico and Japan
- Coastal development in Japan
3. Hawksbill Turtle(E. imbricata)
Northeast Indian Ocean
India, Sri Lanka and Bangladesh
- No adequate conservation
East Atlantic Ocean
Congo and Sao Tome et Principe
- Severe threat from coastal net
bycatch
- Consumption of eggs and meat
- Exploitation of shell material for
handicrafts and jewelry
East Pacific Ocean
El Salvador, Nicaragua and Ecuador
- Severe threats of coastal bycatch
- Egg consumption
West Pacific Ocean
Malaysia, Indonesia and Philippines
- Exploitation of turtle shell
material
- Climate change
4. Leatherback Turtle (D. coriacea)
East Pacific Ocean
Mexico, Nicaragua and Costa Rica
- Egg consumption
- Bycatch
3.1.2. World’s Most Healthiest Turtle Population
The study also highlighted the healthiest sea turtle populations in the
world, which are generally large populations with increasing trends under
relatively low threats. Five species among these dozen healthy populations are
found in nesting sites and feeding areas in Australia, Mexico, and Brazil. Other
areas that harbor healthy turtle populations included the Southwest Indian Ocean,
Micronesia and French Polynesia.
16
Table 3. 2 World’s Most Healthiest Turtle Population
No.
Species HabitatsKey Nesting
SitesThe Causes
1. Loggerhead Turtle (C. caretta)
Northwest Indian Ocean
Oman - The consistent monitoring efforts to the turtle
2. Green Turtle(C. mydas)
Southeast Indian Ocean
Australia - The existence is monitored. So it becomes abundant, although some still consume turtle eggs
Southwest Atlantic Ocean
Brazil - Collaborative conservation efforts made by Brazil and neighboring countries
East Pacific Ocean
Galapagos Islands, Ecuador and Mexico
- Stricter controls on turtle trade
South Central Pacific Ocean
French Polynesia
- There is no serious threat so its existence is still abundant
Southwest Pacific Ocean
Australia - There is no serious threat so its existence is still abundant
3. Hawksbill Turtle (E. imbricata)
Southeast Indian Ocean
Australia - A good nesting place
- The low threat attackSouthwest Indian Ocean
Seychelles, French and British Overseas Territories
- The long-term monitoring is good
- Good protection on coral reefs as their nest
Southwest Pacific Ocean
Australia - The maintenance of coral reefs is good and healthy
4. Leatherback Turtle (D. coriacea)
Southeast Atlantic Ocean
Gabon - Good conservation from neighboring countries
Northwest Atlantic Ocean
Trinidad, Guyana, French Guiana and Suriname
- The population is still growing despite severe bycatch
5. Olive Ridley Turtle (Lepidochely
East Pacific Ocean
Mexico, Nicaragua and Costa Rica
- Existence is abundant though the nesting place is not good
17
s olivacea)
3.2. Threats on Turtle
Each year thousands of hatchling turtles emerge from their nests along the
southeast U.S. coast and enter the Atlantic Ocean. Sadly, only an estimated one in
1,000 to 10,000 will survive to adulthood. The natural obstacles faced by young
and adult sea turtles are staggering, but it is the increasing threats caused by
humans that are driving them to extinction. Today, all sea turtles found in U.S.
waters are federally listed as endangered, except for the loggerhead which is listed
as threatened.
1. Natural Threats
In nature, sea turtles face a host of life and death obstacles to their
survival. Predators such as raccoons, crabs and ants raid eggs and hatchlings still
in the nest. Once they emerge, hatchlings make bite-sized meals for birds, crabs
and a host of predators in the ocean. After reaching adulthood, sea turtles are
relatively immune to predation, except for the occasional shark attack. These
natural threats, however, are not the reasons sea turtle populations have
plummeted toward extinction. To understand what really threatens sea turtle
survival, we must look at the actions of humans.
2. Harvest for Consumption
Although sea turtles have spiritual or mythological importance in many
cultures around the world, this has not prevented humans from consuming their
eggs or meat. In many coastal communities, especially in Central America and
18
Asia, sea turtles have provided a source of food. During the nesting season, turtle
hunters comb the beaches at night looking for nesting females. Often, they will
wait until the female has deposited her eggs to kill her. Then, they take both the
eggs and the meat. Additionally, people may use other parts of the turtle for
products, including the oil, cartilage, skin and shell. Many countries forbid the
taking of eggs, but enforcement is lax, poaching is rampant, and the eggs can
often be found for sale in local markets.
3. Illegal Sea Turtle Shell Trade
Hawksbill sea turtles, recognized for their beautiful gold and brown shells,
have been hunted for centuries to create jewelry and other luxury items. As a
result, these turtles are now listed as critically endangered. Scientists estimate that
hawksbill populations have declined by 90 percent during the past 100 years.
While illegal trade is the primary cause of this decline, the demand for shells
continues today on the black market. The lack of information about sea turtles
leads many tourists to unwittingly support the international trade in these
endangered species. Buying, selling or importing any sea any sea turtle products
in the U.S., as in many countries around the world, is strictly prohibited by law.
4. Commercial Fishing: Longline & Trawl
Each year hundreds of thousands of adult and immature sea turtles are
accidentally captured in fisheries ranging from highly mechanized operations to
small-scale fishermen around the world. Global estimates of annual capture,
injury and mortality are staggering — 150,000 turtles of all species killed in
19
shrimp trawls, more than 200,000 loggerheads and 50,000 leatherbacks captured,
injured or killed by longlines, and large numbers of all species drowned in gill
nets. The extent of gill net mortality is unknown, but sea turtle capture is
significant where studied, and the drowning of sea turtles in gill nets may be
comparable to trawl and longline mortality. Deaths in gill nets are particularly
hard to quantify because these nets are set by uncounted numbers of local
fishermen in tropical waters around the world. Other fisheries that accidentally
take turtles include dredges, trawls, pound nets, pot fisheries, and hand lines.
In the United States, the federal government worked with the commercial
shrimp trawl industry to develop Turtle Excluder Devices (TEDs). TEDs are a
grid of bars with an opening either at the top or the bottom of the trawl net. The
grid is fitted into the neck of a shrimp trawl. Small animals such as shrimp pass
through the bars and are caught in the bag end of the trawl. When larger animals,
such as marine turtles and sharks are captured in the trawl they strike the grid bars
and are ejected through the opening. Today, all U.S. shrimpers are required to put
TEDs in their trawl nets. Unfortunately, not all fishermen comply with the law,
and sea turtles continue to drown in shrimp nets.
5. Marine Debris - Ingestion & Entanglement
It is estimated that more than 100 million marine animals are killed each
year due to plastic debris in the ocean. More than 80% of this plastic comes from
land. It washes out from our beaches and streets. It travels through storm drains
into streams and rivers. It flies away from landfills into our seas. As a result,
20
thousands of sea turtles accidentally swallow these plastics, mistaking them for
food. Leatherbacks especially, cannot distinguish between floating jellyfish — a
main component of their diet — and floating plastic bags. Most of the debris is
recognizable: plastic bags, balloons, bottles, degraded buoys, plastic packaging,
and food wrappers. Some plastics aren't so easy to see, so small, in fact, that it is
invisible to the naked eye. If sea turtles ingest these particles, they can become
sick or even starve.
Turtles are affected to an unknown, but potentially significant degree, by
entanglement in persistent marine debris, including discarded or lost fishing gear
including steel and monofilament line, synthetic and natural rope, plastic onion
sacks and discarded plastic netting materials. Monofilament line appears to be the
principal source of entanglement for sea turtles in US waters.
6. Artificial Lighting
Nesting turtles depend on dark, quite beaches to reproduce successfully.
Today, these turtles are endangered, in part, because they must compete with
tourists, businesses and coastal residents to use the beach. This man-made, coastal
development results in artificial lighting on the beach that discourages female sea
turtles from nesting. Instead, turtles will choose a less-than-optimal nesting spot,
which affects the chances of producing a successful nest. Also, near-shore lighting
can cause sea turtle hatchlings to become disoriented when they are born. Instead,
they will wander inland where they often die of dehydration, predation, or even
from being run over on busy coastal streets.
21
7. Coastal Armoring
Sea turtle nesting beaches everywhere have been substantially altered by
urbanization and development. To protect this prime real estate, many coastal
property owners have built coastal armoring structures such as sea walls, rock
revetments and sandbags to help protect their property from natural erosion. These
man-made structures threaten sea turtles nesting habitat by interrupt the natural
nesting process through a reduction of nesting habitat and displacement of turtles
to less optimal nesting areas. Florida's beaches, for example, host approximately
90% of all the sea turtle nesting in the U.S. But sadly, over 40% of Florida's
beaches are classified as critically eroding due to changes in the natural landscape
of these beaches.
8. Beach Erosion
One way to address beach erosion is through beach nourishment. This
consists of pumping, trucking or otherwise depositing sand on a beach to replace
what has been lost to erosion. While beach nourishment is often preferable to
armoring, if it is not done correctly, it can negatively impact sea turtles. Dredging
for the sand to nourish a beach can cause direct threats to sea turtles and their
nearshore marine habitats. Hopper dredges have been directly responsible for the
incidental capture and death of hundreds, if not thousands, of sea turtles in the US.
9. Beach Activities
22
Human use of nesting beaches can result in negative impacts to nesting
turtles, incubating egg clutches and hatchlings. The most serious threat caused by
increased human presence on the beach is the disturbance to nesting females.
Night-time human activity can prevent sea turtles from emerging on the beach or
even cause females to stop nesting and return to the ocean.
Beach Furniture and other recreational equipment (e.g., cabanas,
umbrellas, hobie cats, canoes, small boats and beach cycles) can reduce nesting
success and increase false crawls on nesting beaches. There is also increasing
documentation of nesting females becoming entrapped in beach furniture.
Beach Driving, either at night or during the daytime, can negatively
impact sea turtles. Night time driving can disturb nesting females, disorient
emerging hatchlings, and crush hatchlings attempting to reach the ocean. Tire ruts
left by vehicles can extend the time it takes a hatchling to reach the ocean and
increase their chance of being caught by a predator. Driving during the day can
cause sand compaction above nests resulting in lower nest success. Additionally,
beach driving contributes to erosion, especially during high tides or on narrow
beaches.
10. Invasive Species Predation
Around the globe, sea turtles and hatchlings alike are victim to natural
predators. Crabs, raccoons, boars, birds, fish and sharks all play their role in the
natural food chain. However, urban development along coast lines has introduced
many non-native species that have become invasive predators for sea turtles and
23
other coastal wildlife. Florida itself has one of the most severe invasive species
problems in the United States. Domesticated dogs and cats will devour eggs and
hatchlings and even attack nesting turtles. In many areas, trash left behind by
humans encourages inland animals to migrate to beaches for food, further
increasing sea turtle predators.
11. Marine Pollution
Marine pollution can have serious impacts on both sea turtles and the food
they eat. New research suggests that a disease now killing many sea turtles
(fibropapillomas) may be linked to pollution in the oceans and in near-shore
waters. When pollution enters the water, it contaminates and kills aquatic plant
and animal life that is often food for sea turtles. Oil spills, urban runoff from
chemicals, fertilizers and petroleum all contribute to water pollution. Because the
ocean is so large, many incorrectly assume that pollutants will be diluted and
dispersed to safe levels, but in reality, the toxins released from these pollutants
become more concentrated as they break down in size. As a result, these smaller,
more toxic particles become food for many links in the food chain, including sea
turtles.
12. Oil Spills
Marine pollution can have serious impacts on both sea turtles and the food
they eat. New research suggests that a disease now killing many sea turtles
(fibropapillomas) may be linked to pollution in the oceans and in near-shore
waters. When pollution enters the water, it contaminates and kills aquatic plant
24
and animal life that is often food for sea turtles. Oil spills, urban runoff from
chemicals, fertilizers and petroleum all contribute to water pollution. Because the
ocean is so large, many incorrectly assume that pollutants will be diluted and
dispersed to safe levels, but in reality, the toxins released from these pollutants
become more concentrated as they break down in size. As a result, these smaller,
more toxic particles become food for many links in the food chain, including sea
turtles.
13. Climate Change
Because sea turtles use both marine and terrestrial habits during their life
cycles, the affects of climate change are likely to have a devastating impact on
these endangered species. Climate change affects nesting beaches. With melting
polar ice caps and rising sea levels, beaches are starting to disappear. As the water
level begins to rise, the size of nesting beaches decrease. Stronger storms,
predicted as a result of increasing temperatures, will continue to erode coastal
habitats. Higher temperatures can adversely affect sea turtle gender ratio.
Increasing incubation temperatures could result in more female sea turtles, which
reduces reproductive opportunities and decreases genetic diversity.
3.3. The Influence of Turtle Island on Turtle Population
3.3.1. The Positive Impact
1. Keeping the turtle population
Turtle populations which is now being dropped, can be helped by the
various breeding places like Turtle Island in Tanjung Benoa, Bali. Turtle Island
25
has become a new habitat for turtles. One of the turtles in this place is green turtle
which its population is now declining. In this place, we can see the process of
turtle life from still eggs, birth, children, to adults.
At this location, turtle population is greatly increased. In the breeding
season, turtle eggs are rescued and hatched by citizen. 50 % total population of 1
month old hatchlings are released freely to the sea. The rest is kept to be raised
again. If all hatchlings are released, they will die because eaten by predators. After
approximately 1 year old, half of the remaining 50% pet turtle which is still live
will be released back to the sea. And the rest will be maintained used as brood
stock.
2. Increasing awareness of travelers in cultivation turtles
In the 1990’s turtle population is nearly reached extinction in Bali.
Balinese liked to consume turtles meat, because the taste is good. In addition
turtles also be required to become sacrifice animals to be used as lawar (Balinese
food) when the ritual. As a result, turtle population is decline drastically.
Therefore, the Government then made a ban to catching turtles and purchase turtle
with any reason. And for the ritual, only allowed for big temples and big religious
ritual only.
Therefore, the present of Turtle Island as a turtles conservation is to
prevent the extinction. The reasons of selecting Turtle Island as a breeding place
because the area is suitable for turtle live. At high tide, the land is covered by sea
water. And turtle absolutely need sea water to life. Turtle Island is the awareness
26
for people and tourists how important it is to keep the turtle population to avoid
the extinction.
3. Attracting travelers to learn the life cycle of turtles
As a tourist spot, Turtle Island is very interesting place because the
location is not far from Tanjung Benoa, which is the center of the water
attractions. Turtle Island can be reached within 15 minutes by using a glass
bottom boat from Tanjung Benoa. Turtles Island can be an educative tool for
travelers who want to know more about turtles, both kinds, behavior, appearance,
etc.
3.3.2. The Negative Impact
1. Tourism activities that cause the turtle population decline
Tourism activity became one of the causes of environmental degradation
and the inhibition of the flora and fauna development in Turtle Island. Tourism
activity nowadays give adverse impact on the flora and fauna development
environment. The tourism activities can increase the pollution to the environment,
for example marine pollution caused by plastic waste brought by the tourists and
dumped into the sea. In addition. air pollution due to transport used by the
travelers. And the most severe is the number of poaching endangered animals
which protected because of the many tourism love souvenirs from endangered
animals. It is the factors which led to the turtle population has decreased.
27
2. Development around the turtle breeding
Construction of the various resorts, hotels and residential areas in the
coastal threatens nesting turtles place. This is because of turtles is very sensitive to
light, the crowds, and noises that make turtles scared for landed to lay eggs. The
presence of human activity around the nesting area also increases levels of
disturbance to turtles. For example, disruption caused by the lights on the beach,
lit a bonfire, taking pictures with a camera flash, noise generated by the voices of
singing people which were having a bonfire on the beach, water sports like jet ski,
and motor vehicle. Newly hatched hatchlings will go towards the beach with light
guide. This is because the light in the sky over the sea is brighter than the
mainland sky and this applies at times of day and night. Human-made light at
night, such as the lights of hotels and resorts make hatchlings lost and disoriented.
Thus causing them off guard and easily become prey when noon came. Therefore
important not to install lights that leads to the beach at turtle nesting season to
avoid this from happening.
3.4. The Benefits of Turtle
Turtle is not only unique and cute species, but also very useful for human
life. Just to let it live freely in nature, without interference by humans, turtles
provides many benefits. Such benefits include aspects of economic growth
through the fisheries sector (and its multiplier effect), maintaining the balance of
the ecosystem chain, science and the development of ecotourism.
28
First, ecosystem services (environmental balance). Turtles play an
important role in maintaining the balance in the ocean, such as what done by the
Green Turtle is. Turtles that have mileage reaches up to thousands of miles of
ocean plays an important role in the spread of nutrients to the sea by their feces.
This dung as fertilizer or feed for other marine plants and animals.
Second, the increase in economic growth of the fisheries sector. Turtle
actually plays a vital role for the availability of marine fish, such as leatherback
turtle, which eat the Jellyfish. Jellyfish are marine animals that eats fish. It is a
food chain. If there is no large leatherback turtle, jellyfish populations will
increase. Jellyfish overpopulation would endanger child fish populations. Will be
more and more jellyfish who eat children fish. Due to the many jellyfish who eat
child fish, the availability of fish in the sea will be reduced. This eventually will
reduce fish catches of fishermen. Different case with. This type of turtle is eating
unhealthy reefs the corals become healthy again. Healthy coral reefs are a good
food source and a place to live (habitat) fish breeding. In the end, this will make
the area into a source of fish (more fish to be caught).
Third, the potential for tourism development or other economic
alternatives. As mentioned earlier that the turtles play an important role
maintaining the health of coral reefs. Coral reefs that well preserved, especially if
the area possess natural beauty and supportive culture, would provide underwater
scenery is quite beautiful. It has the potential for tourism development.
Snorkelling and diving can be attractions offered to tourists.
29
Fourth, science. Turtles and their habitats is also a means for the
improvement of the human sciences, for example, through research and
development. According to one of the founders of YPB which is also eco-tourism
expert,, turtle known as one of the remaining animals from antiquity. Therefore,
turtle may be "entrance" for mankind to know what happened in the past and other
important information. It is very important for the development of science,
especially biology and the environment.
3.5. The Way To Preserve The Turtle Population
Turtle has been listed in the list of Appendix I of the Convention of
International Trade in Endangered Species of Flora and Fauna (Convention on
International Trade of Endangered Species - CITES). The convention prohibits all
international trade in all products / results that turtle, be it eggs, meat, and shells.
In order to remain sustainable and turtles develop into much more, it needs
to be done the following ways:
1. Escort and supervise UU no. 77 year 1999 about turtle protection;
2. Do not consume food derived from turtle eggs and meat;
3. Do not use items made from turtle shell;
4. Do not throw plastic waste and other things that are harmful into the sea;
5. Do not disturb the turtles who laying eggs, because they can stop the
process of laying eggs when feeling threatened;
6. Not taking turtle eggs because it would destroy their populations;
30
7. Maintaining the health of coral reefs. Healthy coral reefs are places to eat
and good shelter for turtles;
8. Supports sea turtle conservation program;
9. Campaigning the turtle conservation;
10. Donate funds to support conservation activities.
31
CHAPTER IVCLOSING
4.1. Conclusion
The following conclusions are taken from the analysis described in the
previous three chapters:
1. Turtle Island function as turtle breeding location as well as a tourist spot
that is located in Tanjung Benoa, Bali. With the presence of Turtle Island,
it will directly help to conserve turtle population in the world which is
currently in a vulnerable state.
2. There are some positive and negative influence of the presence of turtle
island. One positive effect is as awareness for tourists that it is very
important for humans to keep the turtle population.
3. The negative impact comes from the people who make the construction of
infrastructures and the traveler coming to Turtle Island. Construction of
hotel will disturb the turtle habitat and destroy turtle nests. As a result, the
turtle does not want to come to the beach to lay their eggs.
4. Threats to turtle can come from natural or human. However, the threat that
comes from human more threaten turtle. Activities such as fishing, coastal
area development, the consumption of turtle eggs and meat, and trade
turtle shells to be used as jewelry have made the turtle population is
threatened.
32
5. Many ways can be done to conserve turtles. From the many ways, the
most important thing is everyone should have the awareness of itself to
love and keep the turtle.
6. With the preservation of turtles, many benefits can be taken either in the
fields of economy, tourism or education facilities.
4.2. Suggestion
Writer propose some suggestions relating to the writing of scientific
papers, as follows:
1. Everyone should care the survival of this ancient species to conserve the
turtle population.
2. Turtles protection institution should give the right knowledge to all people
to make them understand about of turtles and in order to make everyone
know about turtle, such as life cycle, habitat, food, etc.
3. Do not hurt the turtle's body and destroy the habitat of turtles while
fishing. Therefore, it is particularly important for fishermen to know the
knowledge about turtle.
4. Tourists should obey the rules while visiting tourist attractions of turtle.
Do not ride on turtle shell and do not throw garbage into the sea. Two of
the above is a simple way that can be done to maintain the existence of
turtle.
5. Government must enforce Turtle Protection Law no. 77 year 1999
33
BIBLIOGRAPHY
Nuitja, I Nyoman Sumertha. 1992. Biologi dan Ekologi Pelestarian Penyu Laut.
Bogor : Penerbit IPB.
Eckert, K. L., Bjorndal, K. A., Abreu-Grobois, F. A. and Donnelly, M. (Eds.)
1999. Research and Management Techniques for the Conservation of Sea Turtles.
Washington DC : IUCN/SSC Marine Turtle Specialist Group Publication.
http://blog-penyu.blogspot.com. Accessed on 19th August 2014.
http://id.wikipedia.org/wiki/Penyu. Accessed on 5th August 2014.
http://lingkunganhijau.com. Accessed on 10th August 2014.
http://ocean.si.edu. Accessed on 22nd August 2014.
http://www.conserveturtles.org. Accessed on 22nd August 2014.
http://www.iucn.org. Accessed on 5th August 2014.
http://www.terangi.or.id. Accessed on 22nd August 2014.
http://www.widecast.org. Accessed on 2nd August 2014
http://www.worldwildlife.org. Accessed on 10th September 2014
http://www.wwf.or.id. Accessed on 10th September 2014
x
BIOGRAPHY
The writer’s name is Tendi Nugeraha Wijaya,
people usually call him as Tendi. The writer is a male
and he was born in Sumedang on 4th March 1998.
The writer is the second child of two sibling from a
spouse Mr. Wahyu and Mrs. Noneng Sartikah. But in
2003, the writer’s mother was died because of sick. Now, the writer has a mother
who really love him named Diah Mulyani. The writer’s live in Sumedang,
precisely in Lingk. Kebon Kalapa, Kel. Pasanggrahan Baru, Kec. South
Sumedang. The writer’s sister has been married so she chooses to live in Depok
with her husband.
The writer begins his study in 2003 in Kartika Siliwangi Kindergarten and
graduated in 2004, then continued to Sindangpalay Elementary School and until
2010. After he graduated there, he study at Junior High School 1 Sumedang for 2
years and graduated in 2012. And now, the writer is still studying in Senior High
School 1 Sumedang.
The writer like to designing by computer software in his computer.
Formerly, the writer dream was want to be an architect, but now he want to be a
computer engineer. It makes the writer motivated to continue his study to
information system major in University of Indonesia. The writer favorite subjects
are mathematics and English. He also loves to listen the music, watching
television, internet browsing and sleep all day long.
xi