Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs
The predatory amphipod Themisto, is a so far neglected key player covering a distribution from temperate to polar regions where it regionally represents the dominant food source for higher trophic levels. Poleward range expansions of several species have been already been documented or predicted. We...
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ftawi:oai:epic.awi.de:50723 2023-05-15T13:45:21+02:00 Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs Havermans, Charlotte 2018-12-10 https://epic.awi.de/id/eprint/50723/ https://hdl.handle.net/10013/epic.abefaceb-8059-432b-8af4-b920b08f34c7 unknown Havermans, C. orcid:0000-0002-1126-4074 (2018) Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs , Invited Talk - Seminar at the Norwegian College of Fishery Science, Arctic University of Norway, Tromsoe, 10 December 2018 - 10 December 2018 . hdl:10013/epic.abefaceb-8059-432b-8af4-b920b08f34c7 EPIC3Invited Talk - Seminar at the Norwegian College of Fishery Science, Arctic University of Norway, Tromsoe, 2018-12-10-2018-12-10 Conference notRev 2018 ftawi 2021-12-24T15:45:06Z The predatory amphipod Themisto, is a so far neglected key player covering a distribution from temperate to polar regions where it regionally represents the dominant food source for higher trophic levels. Poleward range expansions of several species have been already been documented or predicted. We conducted a comparative study of Arctic and Antarctic Themisto species to investigate their distribution, genetic connectivity and feeding ecology in order to predict the likelihood of their range shifts and the consequences for polar food webs. Recently, increases in gelatinous zooplankton biomass, referred to as “jellification”, have been observed in several marine ecosystems. Abundance data on jellies are scarce for the Arctic, impeding our ability to detect changes of a similar magnitude in this rapidly changing region. We will use a combination of novel sampling techniques, molecular tools and modelling to investigate the current and future role of jellies in the Arctic food web, potential range expansions, and their impact of the ecosystem and fish stocks. Conference Object Antarc* Antarctic Arctic Arctic Themisto Zooplankton Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Antarctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
The predatory amphipod Themisto, is a so far neglected key player covering a distribution from temperate to polar regions where it regionally represents the dominant food source for higher trophic levels. Poleward range expansions of several species have been already been documented or predicted. We conducted a comparative study of Arctic and Antarctic Themisto species to investigate their distribution, genetic connectivity and feeding ecology in order to predict the likelihood of their range shifts and the consequences for polar food webs. Recently, increases in gelatinous zooplankton biomass, referred to as “jellification”, have been observed in several marine ecosystems. Abundance data on jellies are scarce for the Arctic, impeding our ability to detect changes of a similar magnitude in this rapidly changing region. We will use a combination of novel sampling techniques, molecular tools and modelling to investigate the current and future role of jellies in the Arctic food web, potential range expansions, and their impact of the ecosystem and fish stocks. |
format |
Conference Object |
author |
Havermans, Charlotte |
spellingShingle |
Havermans, Charlotte Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
author_facet |
Havermans, Charlotte |
author_sort |
Havermans, Charlotte |
title |
Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
title_short |
Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
title_full |
Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
title_fullStr |
Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
title_full_unstemmed |
Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs |
title_sort |
predatory zooplankton on the move: impact on antarctic and arctic food webs |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/50723/ https://hdl.handle.net/10013/epic.abefaceb-8059-432b-8af4-b920b08f34c7 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Arctic Themisto Zooplankton |
genre_facet |
Antarc* Antarctic Arctic Arctic Themisto Zooplankton |
op_source |
EPIC3Invited Talk - Seminar at the Norwegian College of Fishery Science, Arctic University of Norway, Tromsoe, 2018-12-10-2018-12-10 |
op_relation |
Havermans, C. orcid:0000-0002-1126-4074 (2018) Predatory zooplankton on the move: Impact on Antarctic and Arctic food webs , Invited Talk - Seminar at the Norwegian College of Fishery Science, Arctic University of Norway, Tromsoe, 10 December 2018 - 10 December 2018 . hdl:10013/epic.abefaceb-8059-432b-8af4-b920b08f34c7 |
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1766221832488222720 |