Biological valuation of the Gulf of Gdansk - methdology testing -

Biological valuation of the Gulf of Gdansk

- methdology testing -

Tomasz Zarzycki & Katarzyna Karwowska

Presentation structure

• Case study area– Location, background

information– Why it was chosen?

• Biological valuation– Attributes of biodiversity– Data collection– Assessment questions– Maps of values

• Lessons learned– Data gathering/sharing– Assessment protocol

Case study area- Gulf of Gdansk -

• location

Puck Bay


1Salinity [PSU] 0.65 – 12.23Organic matter content [% dw ]

0.2 - 256Nitrogen

input [t y-1]118.000

1pH 7.52 – 8.703Sediment fraction

<63 mm [%]0 - >50

6Phosphorus input [t y-1]

7.000

4Oxygen saturation [%]near-bottom waters surface

waters

40-80 (20)80-170

3C/N-ratio[0-10 cm depth]

5-257Limitation of

PP

winter - temp.summer – phosphate

1Dissolved inorg. Nitrogen [mmol l-1 ]

14.38

3Sedim. oxyg. demand

[mmol O2m-2d-1]

to 500

1Total nitrogen [mmol l-1 ]

26.963Phosphate release

[mgPm-2d-1]1 - 612

Main pollutants

Vistula riverVistula Lagoon

2 Winter max. [mmol l-1 ]

15.903Ammonia release

[mgNm-2d-1]to 400 8Trophic level High trophy

2Dissolved inorg. Phosphate [mmol l-1 ]

0.504Heavy metals

mg kg-1 dw (0-10cm)Zn: 52-74; Cu:12-16;Cd: 0.4-0.7; Pb:23-16

1Total phosphorus [mmol l-1 ]

1.295Sediment

distributionvariously grained sands; silty sands;

sandy silts; clayey silts2 Winter max. [mmol l-1 ]

0.79

1 -Łysiak-Pastuszak (2004); 2 - Majewski (1990); 3 – Kruk-Dowgiałło and Dubrawski (1998); 4 - Krzymiński et al. (2000); 5 - Krzymiński et al. (2004); 6 - Andrulewicz and Witek (2002); 7 - Renk (2000); 8 - Łysiak-Pastuszak and Piątkowska (2004)


• Why it was chosen as a case study?

– Data availability– Socioeconomic valuation site

(in the frames of MarBEF, WP5)– Area of interference

• Range of stakeholders• Different use

– Nature preservation (NATURA 2000)

– Ship traffic

– Coastal development

– No management plan• Pilot study for marine spatial planning in Poland – 1st exercise

Biological valuation- Gulf of Gdansk -

• Attributes of biodiversity that were analyzed:– macrozoobenthos– fish– birds (waterfowl)

• Attributes that are still missing– vascular plants– macro algae– zoo- and phyto- plankton– sea mammals

- Biological valuation -Gulf of Gdansk

DATA COLLECTION

MACROZOOBENTHOS– dataset from 1996

• Eckman Grab of 10x10cm, sieve mesh size 0,5mm• triplicate samples from each locality pooled together• www.iopan.gda.pl/projects/puckbay/Pucka/pp4.htm by

Lech Kotwicki

• MAP OF SAMPLING POINTS

http://www.iopan.gda.pl/projects/puckbay/Pucka/pp4.htm

MAP OF SAMPLINGPOINTS FOR MACROBENTHOS 1996

MACROZOOBENTHOS– dataset from 2005

• Van Veen Grab, area 0,1m2; sieve mesh size 0,5mm• triplicate samples from each locality pooled together• Data were collected for Master Thesis of Magda

Dawidowska



DATA COLLECTION

MAP OF SAMPLINGPOINTS FOR MACROBENTHOS 2006

FISH

– Dataset from 2006– Beamtrawl, mesh size 6mm, 2,5 m wide.– Trawling for certain distance– Data was collected during practical course, for

students of oceanography, not published, extracted from the report



DATA COLLECTION

MAP OF SAMPLINGPATHS FOR FISH 2006

BIRDS

– Dataset from 1999/2000 “birds year”

(season autumn - winter - spring)

Coastline is divided into 51 sections. Trained volunteers, students and scientists walk along the coast divisions and observe waterfowl.

• INTERPOLATION for the 1km from the coastline



DATA COLLECTION

MAP OF SAMPLINGAREAS FOR BIRDS 2006

DISTRIBUTIONON DATAAVAILABILITY

MACROZOOBENTHOS– Is the subarea characterized by high counts of many

species?– Is the abundance of a certain species very high in the

subarea?– Is the subarea characterized by the presence of many rare

species?– Is the abundance of rare species high in the subarea?– Is the abundance habitat-forming species high in the

subarea?– Is the abundance of ecologically significant species high in

the subarea?– Is the species richness in the subarea high?


ASSESSMENT QUESTIONS

MACROZOOBENTHOS– Is the subarea characterized by the presence of many rare

species? – Is the abundance of rare species high in the subarea?

Bathyporeia pilosa, Crangon crangon, Gammarus locusta,Halicryptus spinulosus, Mysis mixta, Saduria entomon, Turbelaria

– Is the abundance habitat-forming species high in the subarea?Balanus improvisus, Cerastoderma glaucum, Macoma balthica, Mya arenaria, Mytilus edulis



– Is the abundance of ecologically significant species high in the subarea?

Gammarus oceanicus, Gammarus salinus, Gammarus zaddachi, Hydrobia sp., Idotea balthica, Idotea chelipes,

GRAZERS

Saduria entomon,FOOD

SOURCE

Hediste diversicolor

BIOTURBTORS




SUBZONES DIVISION

GRID FOR MACROBENTHOS250m x 250m

GRID FOR FISH/BIRDS1000m x 1000m

-Biological valuationGulf of Gdansk -


FISH– Is the subarea characterized by high counts of

many species?– Is the abundance of a certain species very high in

the subarea?– Is the abundance of ecologically significant species

high in the subarea?– Is the species richness in the subarea high?– Is the subarea highly productive?

FISH

– Is the abundance of ecologically significant species high in the subarea?

Gadus morhua, Platichthys flesus, Zoarces viviparus

PREDATORS





BIRDS– Is the species richness in the subarea high?– Is the subarea characterized by the presence of

many rare species?– Is the abundance of rare species high in the

subarea?

BIRDS

– Is the subarea characterized by the presence of many rare species?

– Is the abundance of rare species high in the subarea?

Alca torda, Anser brachyrhynchus, Branta ruficollis, Cepphus grylle, Gavia stellata, Netta rufina, Podiceps grisegena, Tachybaptus ruficollis



Values Birds - Total

Values Birds - Total

Total Value of area Birds and Fish

Data gathering/sharing Assessment protocol

not easy to get detailed data on density/productivity

no easy to get most recent data

potential “threat” for commercial use (EEA – private consultancy companies)

changing environment causes changes in structure of macrobenthic communities

subjectivity in choosing ecologically significant species

productivity is not always a value (macroalgae, fish)

invasive species / non indigenous species,

include / exclude

-Biological valuation- Gulf of Gdansk -LESSONS LEARNED

Habitat Directive

Birds Directive

Documents

Biological valuation of the Gulf of Gdansk - methdology testing -