Physical and biological drivers of zooplankton communities in the Chukchi Sea
Autor: | David G. Kimmel, Jeffrey M. Napp, Adam Spear, Jessica Randall, Phyllis J. Stabeno, Janet T. Duffy-Anderson |
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Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
Water mass Advection 010604 marine biology & hydrobiology Community structure Forcing (mathematics) Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Zooplankton Current (stream) Oceanography Abundance (ecology) General Agricultural and Biological Sciences Copepod |
Zdroj: | Polar Biology. 42:1107-1124 |
ISSN: | 1432-2056 0722-4060 |
Popis: | The physical environments of high-latitude systems are rapidly changing. For example, the Chukchi Sea has experienced increased water temperatures, advection from the Bering Sea, declines in sea-ice concentration, earlier spring ice retreat, and delayed fall ice formation. This physical restructuring is expected to impact ecosystem structure and function. In this study, a series of bio-oceanographic research surveys were conducted in the summers of 2010, 2011, and 2012 to characterize the physical environment and to examine the influence of physical forcing on zooplankton community distribution and abundance. Results revealed yearly advection from the Bering Sea influenced zooplankton community structure, but this influence became less apparent in the northeastern Chukchi due to changes in current speeds and patterns. Decreased advection and later ice retreat in colder years resulted in zooplankton communities that exhibited more diversity, had higher abundances of the lipid-rich copepod Calanus glacialis, and were less closely related to water masses advected from the south. These findings suggest more localized processes are influencing zooplankton community structure in the Chukchi Sea. Increased inflow of water into the Chukchi is predicted with increased warming in the Arctic and changes in food-web structure and function are likely to result. |
Databáze: | OpenAIRE |
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