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Spatial And Temporal Patterns Of Arctic Nearshore Fish Community And Food Web Structures, Mark B. Barton
Spatial And Temporal Patterns Of Arctic Nearshore Fish Community And Food Web Structures, Mark B. Barton
FIU Electronic Theses and Dissertations
Climate change and increasing anthropogenic activities are causing rapid changes to environmental and ecological processes in the Arctic Ocean. To better understand these changes, scientists have increased research efforts in these regions, but to date the number of studies on Arctic nearshore habitats are lacking. My dissertation responds to the paucity of information and investigates patterns in Arctic nearshore fish communities and food webs to gain insight to how these ecosystems may shift as these changes continue. I used multivariate statistical analysis to examine patterns in community structure and composition to determine that Arctic nearshore fish communities are largely driven …
Simulating Eutrophication Effects In Puget Sound Using Qualitative Network Models, Christopher James Harvey, Kathryn Sobocinski
Simulating Eutrophication Effects In Puget Sound Using Qualitative Network Models, Christopher James Harvey, Kathryn Sobocinski
Salish Sea Ecosystem Conference
Ecosystems are complex, dynamic networks of interacting physical, chemical, biological and social components. A stressor such as eutrophication thus can cause responses throughout the system via direct and indirect pathways and feedbacks. Ecosystem models are typically designed to account for as many critical components, functions and pathways as possible in order to reasonably simulate how a system may respond to a stressor; however, many aspects of ecosystem structure and function are poorly studied and too data-poor to represent in a quantitative, mechanistic model. Qualitative network models (QNMs) assume comparably simple (i.e., positive or negative) relationships between interacting components, and allow …