Equipment used for monitoring environmental impact from aquaculture in the Philippines

CDTO Deploying CTDO profile through column Water quality samplerChlorophyll – A measurements in Bolinao bay

Bathymetry of Bolinao north entrance

Bathymetry (depth recordings) of the area

Data collectedBathymetry (depth recordings) of the areaTidal range and current speed, direction and dispersionPhysical parameters - Temperature, turbidity, salinity, oxygen, profile

through the water columnWater quality – chlorophyll, phosphorous, nitrite, ammoniaSediment analysis (biological and chemical)Weather data wind direction, speed, temperature

Echosounder and GPS for making accurate bathymetry maps

Current meters Data out put (direction and speed)

Current meter position and water transport rose

Grab for sediment samples

Benthic analysis of sediment samples

Tidal range and current speed, direction and dispersion

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CM06

CM08

CM11

CM01

CM07

Bolinao CM01 (6 m depth)water transport (l/(s*m^2))

0

10

20

300

1530

45

60

75

90

105

120

135150

165180

195210

225

240

255

270

285

300

315330

345

Bolinao CM01 (5 m depth)

0

45

90

135

180

225

270

315

360

04.1

5.05

11

04.1

5.05

17

04.1

5.05

23

04.1

6.05

5

04.1

6.05

11

Time

Direction

Bolinao CM01 (5 m depth)

0

5

10

15

20

25

30

35

40

45

04.15.0

5 11

04.15.0

5 17

04.15.0

5 23

04.16.0

5 5

04.16.0

5 12

Time

Spee

d (

cm

/sec)

Physical parameter profiles through the water column

2 7 . 5 2 8 2 8 . 5 2 9 2 9 . 5 3 0

T e m p e r a t u r e ( ° C )

2 0

1 6

1 2

8

4

0

De

pth

(m

)

3 0 3 1 3 2 3 3 3 4

S a l i n i t y ( P S U )

3 . 6 4 4 . 4 4 . 8

O x y g e n ( m g / l )

0 1 2 3 4 5

C h l o r o p h y l l - F ( µ g / l )

C T D O 0 2B o l i n a o 0 2 . 2 1 . 0 6 .

Water quality measurements

Sediment analysis (biological and chemical)

High organic content- close to a fish cage

Low organic content- far away from a fish cage

Securing sounder to boat

Station 1:

Taxon Number

1. Cirratulus sp. (polychaeta) 338

2. Dorvillea sp. (polychaeta) 176

3. Nereis sp. (polychaeta) 123

4. Cirratulidae indet (polychaeta) 36

5. Loripes lucinalis (mollusca) 14

6. Paguridae indet (crustacea) 8

7. Lumbrineris sp. (polychaeta) 8

8. Paraonis sp. (polychaeta) 8

9. Typosyllis sp. (polychaeta) 8

10. Tellina donacina (mollusca) 7

Reference station:

Taxon Number

1. Tellina donacina (mollusca) 39

2. Lucinella divaricata (mollusca) 23

3. Gouldia minima (mollusca) 21

4. Owenia fusiformis (polychaeta) 20

5. Aspidosiphon mulleri (polychaeta) 196. Ascidiacea indet (tunicata) 17

7. Nuculana pella (mollusca) 15

8. Gonilia calliglypta (mollusca) 15

9. Tanaidacea indet (crustacea) 13

10. Lumbrineris sp. (polychaeta) 13

Example Impacted sample

Example Reference sample

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Bolinao-chlorophyll.dbf# 0.68 - 2 ug/l# 2.1 - 4 ug/l# 4.1 - 6 ug/l

# 6.1 - 30 ug/l

By: Rune Palerud1, Guttorm N. Christensen1, Patrick White1, Regie Regpala2. 1 Akvaplan-niva, 2 BFAR NIFTDC