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- W2094561877 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 494:179-189 (2013) - DOI: https://doi.org/10.3354/meps10545 Linking changes in eastern Bering Sea jellyfish populations to environmental factors via nonlinear time series models Mary Beth Decker1,*, Hai Liu2, Lorenzo Ciannelli3, Carol Ladd4, Wei Cheng5, Kung-Sik Chan6 1Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut 06520, USA 2Indiana University School of Medicine, Department of Biostatistics, Indianapolis, Indiana 46202, USA 3College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon 97331, USA 4Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, Washington 98115, USA 5Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, Washington 98115, USA 6Department of Statistics and Actuarial Science, University of Iowa, Iowa City, Iowa 52242, USA *Email: marybeth.decker@yale.edu ABSTRACT: The Bering Sea ecosystem has experienced significant climatic and biological shifts over the past 3 decades, including temporal and spatial fluctuations of jellyfish biomass. Jellyfish are important predators and competitors of fish; thus, it is critical to understand the effects of environmental factors on their population dynamics. We explored the effects of ocean bottom temperatures and circulation on jellyfish populations using a non-parametric, nonlinear multiple time series analysis of a 23 yr dataset. The study area was divided into 3 subregions that reflected distinct jellyfish catches and distributions. Aggregations and the influence of temperature and circulation on jellyfish biomass were found to differ in each of the 3 subregions. The northern region biomass was affected by central biomass, mediated by the strength of advection from the central region. In both the northern and central regions, current-year biomass was associated with lag-1 biomass, but was mediated by local bottom temperatures (colder temperatures strengthened the relationship with lag-1 biomass). However, in the central region, this relationship held only for the period after 1997. Prior to 1997, advection from the southern region drove central region biomass, suggesting that the primary source of jellyfish biomass to the central eastern Bering Sea shelf changed, coming from the southern shelf before 1997 and from the central shelf after 1997. The southern jellyfish biomass was affected by only the lag-1 southern jellyfish biomass. Transport from the south may have seeded the central region in the early 1990s, but once established, jellyfish polyp populations near islands in the central region may have supplied the area with medusae in the late 1990s. KEY WORDS: Scyphomedusae · Biophysical conditions · Climate change · Time series Full text in pdf format Supplementary material PreviousNextCite this article as: Decker MB, Liu H, Ciannelli L, Ladd C, Cheng W, Chan KS (2013) Linking changes in eastern Bering Sea jellyfish populations to environmental factors via nonlinear time series models. Mar Ecol Prog Ser 494:179-189. https://doi.org/10.3354/meps10545 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 494. Online publication date: December 04, 2013 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2013 Inter-Research." @default.
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- W2094561877 title "Linking changes in eastern Bering Sea jellyfish populations to environmental factors via nonlinear time series models" @default.
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