224
cumstances. The data will be analyzed with the R statistical
environment packages SIAR (Stable Isotope Analysis in R)
and SIBER (Stable Isotope Bayesian Ellipses in R) to estimate the percentage of mangrove carbon in the fishes diets
and to compare the isotopic niche width of the fish communities. The results will be available in September.
8.3.4 Using Perspectives to Understand
Collective Action in Small-Scale Fisheries
in the Gulf of Nicoya, Costa Rica
Anne Jäger
1,2*
, Stephan Partelow
2
, Achim Schlüter
2,3
1
Department of Biology and Chemistry, University
Bremen, Bremen, Germany
2
Department of Social Sciences, Leibniz Centre for
Tropical Marine Research, Bremen, Germany
3
Department of Economics, Jacobs University, Campus
Ring 1, 28759 Bremen, Germany
*corresponding author: anne.jaeger@leibniz-zmt.de
Keywords: Stakeholders’ perspectives, Collective action,
SES- framework, Small-scale fisheries, Gulf of Nicoya
Overexploitation of many common-pool resources worldwide such as fisheries lead to adverse social and ecological
consequences. Because of the complexity of socialecological systems, effective management often poses great
challenges. These can be addressed by cooperation among
resource users which was often found to crucially improve
long-term socio-economic benefits of the community and
maintenance ecological sustainability. As a consequence of
fisheries depletion in the Gulf of Nicoya, fishing communities have been formed and have requested the establishment
of Marine Areas for Responsible Fishing in order to protect
rich fishing points and allow for their sustainable use. Today,
these areas are managed by several governmental and nongovernmental stakeholders such as fishing organizations,
INCOPESCA, coast guards, universities and NGO’s. This
case study aims to identify some key variables that affect
stakeholders’ perspectives by applying the SES- framework
developed by E. Ostrom, and investigate the role of these
perceptions on collective action in resource management of
the Marine Areas for Responsible Fishing. The study takes
place on Isla Venado, Gulf of Nicoya. I gained qualitative
data in the form of participant observation, focus groups, and
open-ended and semi-structured interviews with key informants and fishers in February and March 2017. In order to
find entry points into the social network, interviewees were
randomly sampled, followed by purposive snowball sampling and selection of key informants. I applied Elinor
Ostrom’s social-ecological systems (SES) framework to
identify related variables affecting stakeholder’s perspectives and hence collective action, and I used the SES- framework to structure data analysis with MAXQDA. Findings
show the importance of socio-economic factors (e.g., heterogeneity, trust, social networks) and local perspectives on
social-ecological outcomes of conservation for rules compliance and cooperation.
9 Polar Ecosystems in the Age of Climate
Change
Maciej Mańko
1
and Katarzyna Walczyńska
1
1
Department of Marine Plankton Research, Institute of
Oceanography, University of Gdańsk, Al. Marszałka
Piłsudskiego 46, 81-378 Gdynia
9.1 Call for Abstracts
Polar regions are particularly susceptible to climate change.
Even smallest modification of any of the physical characteristics of water will cause cascade of dramatic effects influencing all levels of biological organization. Already harsh
environment will become even more challenging, thus affecting species reproduction, dispersal, and various other aspects
of organismal biology and ecology. Complexity of polar ecosystems, together with logistical constraint in conducting
research there are hampering proper recognition of their current state, and as such further predictions of possible impact
of climate changes. This session encourages all polar-related
contributions investigating these vulnerable ecosystems in
the age of changing climate.
9.2 Abstracts of Oral Presentations
9.2.1 Zooplankton Variability Within Atlantic
Water Flow to the Arctic
Marta Gluchowska
1*
, Slawomir Kwasniewski
1
, et al.
2,3,4
1
Institute of Oceanology Polish Academy of Sciences
(IOPAN), Powstancow Warszawy 55, 81-712 Sopot, Poland
2
Institute of Marine Research (IMR), P.O. Box 1870
Nordnes, 5817 Bergen, Norway
3
Norwegian Polar Institute (NPI), Fram Centre, 9296
Tromsø, Norway
4
Department of Vertebrate Ecology and Zoology,
University of Gdansk (UG), PL-80-441 Gdansk, Legionow
9, Poland
*invited speaker, corresponding author: mgluchowska@
iopan.pl
Keywords: Atlantic water, Barents Sea, Calanus, West
Spitsbergen Current, Zooplankton
The northward incursion of warm Atlantic water (AW)
not only affects thermal conditions and sea ice cover in the
Arctic Ocean but it also allows plankton species to expand
their distributions. Despite the fact that zooplankton plays
multiple roles in ecosystem functioning, information on zooAppendices
cumstances. The data will be analyzed with the R statistical
environment packages SIAR (Stable Isotope Analysis in R)
and SIBER (Stable Isotope Bayesian Ellipses in R) to estimate the percentage of mangrove carbon in the fishes diets
and to compare the isotopic niche width of the fish communities. The results will be available in September.
8.3.4 Using Perspectives to Understand
Collective Action in Small-Scale Fisheries
in the Gulf of Nicoya, Costa Rica
Anne Jäger
1,2*
, Stephan Partelow
2
, Achim Schlüter
2,3
1
Department of Biology and Chemistry, University
Bremen, Bremen, Germany
2
Department of Social Sciences, Leibniz Centre for
Tropical Marine Research, Bremen, Germany
3
Department of Economics, Jacobs University, Campus
Ring 1, 28759 Bremen, Germany
*corresponding author: anne.jaeger@leibniz-zmt.de
Keywords: Stakeholders’ perspectives, Collective action,
SES- framework, Small-scale fisheries, Gulf of Nicoya
Overexploitation of many common-pool resources worldwide such as fisheries lead to adverse social and ecological
consequences. Because of the complexity of socialecological systems, effective management often poses great
challenges. These can be addressed by cooperation among
resource users which was often found to crucially improve
long-term socio-economic benefits of the community and
maintenance ecological sustainability. As a consequence of
fisheries depletion in the Gulf of Nicoya, fishing communities have been formed and have requested the establishment
of Marine Areas for Responsible Fishing in order to protect
rich fishing points and allow for their sustainable use. Today,
these areas are managed by several governmental and nongovernmental stakeholders such as fishing organizations,
INCOPESCA, coast guards, universities and NGO’s. This
case study aims to identify some key variables that affect
stakeholders’ perspectives by applying the SES- framework
developed by E. Ostrom, and investigate the role of these
perceptions on collective action in resource management of
the Marine Areas for Responsible Fishing. The study takes
place on Isla Venado, Gulf of Nicoya. I gained qualitative
data in the form of participant observation, focus groups, and
open-ended and semi-structured interviews with key informants and fishers in February and March 2017. In order to
find entry points into the social network, interviewees were
randomly sampled, followed by purposive snowball sampling and selection of key informants. I applied Elinor
Ostrom’s social-ecological systems (SES) framework to
identify related variables affecting stakeholder’s perspectives and hence collective action, and I used the SES- framework to structure data analysis with MAXQDA. Findings
show the importance of socio-economic factors (e.g., heterogeneity, trust, social networks) and local perspectives on
social-ecological outcomes of conservation for rules compliance and cooperation.
9 Polar Ecosystems in the Age of Climate
Change
Maciej Mańko
1
and Katarzyna Walczyńska
1
1
Department of Marine Plankton Research, Institute of
Oceanography, University of Gdańsk, Al. Marszałka
Piłsudskiego 46, 81-378 Gdynia
9.1 Call for Abstracts
Polar regions are particularly susceptible to climate change.
Even smallest modification of any of the physical characteristics of water will cause cascade of dramatic effects influencing all levels of biological organization. Already harsh
environment will become even more challenging, thus affecting species reproduction, dispersal, and various other aspects
of organismal biology and ecology. Complexity of polar ecosystems, together with logistical constraint in conducting
research there are hampering proper recognition of their current state, and as such further predictions of possible impact
of climate changes. This session encourages all polar-related
contributions investigating these vulnerable ecosystems in
the age of changing climate.
9.2 Abstracts of Oral Presentations
9.2.1 Zooplankton Variability Within Atlantic
Water Flow to the Arctic
Marta Gluchowska
1*
, Slawomir Kwasniewski
1
, et al.
2,3,4
1
Institute of Oceanology Polish Academy of Sciences
(IOPAN), Powstancow Warszawy 55, 81-712 Sopot, Poland
2
Institute of Marine Research (IMR), P.O. Box 1870
Nordnes, 5817 Bergen, Norway
3
Norwegian Polar Institute (NPI), Fram Centre, 9296
Tromsø, Norway
4
Department of Vertebrate Ecology and Zoology,
University of Gdansk (UG), PL-80-441 Gdansk, Legionow
9, Poland
*invited speaker, corresponding author: mgluchowska@
iopan.pl
Keywords: Atlantic water, Barents Sea, Calanus, West
Spitsbergen Current, Zooplankton
The northward incursion of warm Atlantic water (AW)
not only affects thermal conditions and sea ice cover in the
Arctic Ocean but it also allows plankton species to expand
their distributions. Despite the fact that zooplankton plays
multiple roles in ecosystem functioning, information on zooAppendices