14-16yrs - human impacts on the environment - classroom presentation
TRANSCRIPT
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
1/14
Human Impacts on theEnvironment
http://www.arkive.org/siamang/symphalangus-syndactylus/image-G37279.htmlhttp://cdn2.arkive.org/media/81/81C500F1-35DA-4763-9D20-6915F5DDD002/Presentation.Large/Polar-bear-jumping-between-ice-flows.jpghttp://cdn2.arkive.org/media/E4/E4CAD953-E625-44B3-AA22-06766EA57208/Presentation.Large/Fisherman-holding-dorsal-fin-cut-from-scalloped-hammerhead.jpghttp://www.arkive.org/black-rhinoceros/diceros-bicornis/image-G122061.htmlhttp://www.arkive.org/hawksbill-turtle/eretmochelys-imbricata/image-G58769.htmlhttp://www.arkive.org/brazil-nut-tree/bertholletia-excelsa/image-G37613.html -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
2/14
What is an endangered species?
A species that is at risk ofextinction.
Species with a small or declining population, or a very small range.
Some species are so endangered that they could disappear
completely within our lifetimes.
Tiger Golden frog Grandidiers baobab
http://cdn1.arkive.org/media/08/086520D1-AD0B-4109-A165-55E01B521506/Presentation.Large/Avenue-of-Grandidiers-baobab-trees.jpghttp://cdn2.arkive.org/media/89/89F1FCD9-AB9F-464A-A420-669533CF7BF3/Presentation.Large/Golden-frog-on-leaf-side-view.jpghttp://cdn1.arkive.org/media/29/292BF57E-B56D-4A9A-A267-0FE45DF9336D/Presentation.Large/Bengal-tiger-portrait.jpg -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
3/14
Why are species endangered?
Often as a direct result ofhuman activity. Some of the most common
threats include:
Habitat loss
Hunting and poaching
Invasive species
Climate change
Collection and the pet trade
Pollution Golden-crowned sifaka
http://www.arkive.org/golden-crowned-sifaka/propithecus-tattersalli/image-G1723.html -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
4/14
Case Study: The Power of PlasticWhy is plastic such a problem?
Around 275,000 tonnes of plastic are usedeach year in the UK alone.
Thats about 15 million bottles per day.
Globally, we make around 265 million tonnes
of plastic each year.
Plastic (generally) isnt biodegradable and
can take up to 500 years to decompose.
White stork
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
5/14
The Great Pacific Garbage Patch
Waste has become trapped by
rotating ocean currents
Thought to cover an area around
twice the size of France
Plastic varies in size from household
objects to tiny particles
Estimates suggest that in this area,
plastic particles outnumber plankton6:1
Not only affecting species at sea,
also washing ashore.
American coot
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
6/14
How is this affecting species?
Example: Green turtle
Currently considered an
Endangered species
Doesnt start to reproduce
until 26 to 40 years of age
Returns to breed only once
every two to five years
The female hauls out onto the
beach at night and digs a large
nest with the back flippers Green turtle
http://cdn1.arkive.org/media/23/2336B31B-6869-4533-B0B0-737B913A635D/Presentation.Large/Green-turtle-ventral-view.jpg -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
7/14
Typical nesting habitat
should look like this:
But is increasinglylooking more like this:
http://cdn2.arkive.org/media/99/998E4DD6-99A7-4F16-B487-BA7D3BAC170B/Presentation.Large/Female-green-turtle-trying-to-find-a-suitable-site-to-lay-eggs-among-the-debris-on-a-nesting-beach.jpghttp://cdn1.arkive.org/media/77/77434FB4-4F2C-40BB-BAAF-3333B740D7EA/Presentation.Large/Green-turtle-digging-nest-with-flippers.jpg -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
8/14
Film: Hawaii A Message in the Waves
The Laysan albatross breeds mainly
on the northwestern Hawaiian
islands.
It spends nearly all of its life at sea,
only returning to land to breed.
It feeds mainly on squid and fish
which it skims from the surface ofthe water, or catches by shallow
diving.Laysan albatross
http://cdn2.arkive.org/media/F7/F737BC10-172F-48E9-8B6B-294206D6B6C2/Presentation.Large/Laysan-albatross-pair-with-chick-in-nest.jpg -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
9/14
Video: Hawaii: Message in the Waves
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
10/14
Measuring impacts
For scientists working in conservation, being able to measure and
quantify our human impact on the environment is really important.
Living indicators Non-living indicators
Number of chicks successfully
fledging each season
Chick mortality rates
Total population size trend
Quantity of plastic inside the
albatross boluses
Quantity of plastic on the beach
Quantity of plastic inside the
stomachs of the dead albatrosses
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
11/14
The Power of Film
The Guardian (UK) 28th April 2007
http://www.guardian.co.uk/
BBC News (UK) 29th April 2007
http://www.bbc.co.uk/news/
http://www.guardian.co.uk/http://www.bbc.co.uk/news/http://www.bbc.co.uk/news/http://www.guardian.co.uk/ -
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
12/14
What can we do?
Help clean up participate in a litter pick or beach clean up
Reduce your use of plastic products
Reuse plastic bags and other plastic products where possible
Dispose of your plastic waste properly, always recycle where
possible
REDUCE, REUSE, RECYCLE!
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
13/14
Your Task
Choose a different human impact topic (not plastics) and pick aspecies affected by it which you would like to research.
Using ARKive and other web resources, find as much information as
you can about how your chosen species is affected by human impacts
on the environment.
Make a PowerPoint presentation introducing your species, explaining
why it is threatened and describing how you could measure the impact
humans are having on this species.
Illustrate your presentation using photographs and films from the
ARKive website.
-
7/28/2019 14-16yrs - Human Impacts on the Environment - Classroom Presentation
14/14
Possible Topics
Habitat loss and
deforestation
Hunting and
poaching Invasive species
Collection / pet tradeClimate change
Golden-crowned sifaka Black rhinoceros Kakapo
Polar bear Siamang
http://cdn2.arkive.org/media/FA/FA13C088-9531-47F6-B689-8AF86F32239E/Presentation.Large/A-captive-siamang-bares-its-teeth-behind-cage.jpghttp://cdn2.arkive.org/media/81/81C500F1-35DA-4763-9D20-6915F5DDD002/Presentation.Large/Polar-bear-jumping-between-ice-flows.jpghttp://cdn1.arkive.org/media/56/5692B0B2-7BCE-40CB-BB19-D48B085CF32E/Presentation.Large/Kakapo-walking.jpghttp://www.arkive.org/black-rhinoceros/diceros-bicornis/image-G122061.htmlhttp://www.arkive.org/golden-crowned-sifaka/propithecus-tattersalli/image-G1723.html