Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series
Pelagic amphipods represent a large fraction of organisms entering sediment traps as so-called "swimmers." These swimmers were sampled with sediment traps (~200-300 m water depth) with two mooring arrays deployed at two different positions in the Long-Term Ecological Research observatory H...
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ftleibnizopen:oai:oai.leibnizopen.de:Kru3IJEBBwLIz6xGTyFj 2024-09-15T18:07:01+00:00 Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series Schröter, F. Havermans, C. Kraft, A. Knüppel, N. Beszczynska-Möller, A. Bauerfeind, E. Nöthig, E.-M. 2019 application/pdf https://doi.org/10.34657/3705 https://oa.tib.eu/renate/handle/123456789/5076 eng eng Frontiers Media S.A. CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ 570 Arctic marine ecology Biodiversity Hyperiids - pelagic amphipods Range shifts Sediment traps Article Text 2019 ftleibnizopen https://doi.org/10.34657/3705 2024-08-05T12:41:46Z Pelagic amphipods represent a large fraction of organisms entering sediment traps as so-called "swimmers." These swimmers were sampled with sediment traps (~200-300 m water depth) with two mooring arrays deployed at two different positions in the Long-Term Ecological Research observatory HAUSGARTEN in the northeastern Fram Strait. This sampling allowed us to investigate amphipod year-round abundances and inter-annual trends from 2000 onward. In this study, newly analyzed data from a 3-years period (August 2011-June 2014) are presented, extending this long-term investigation. In our results, the species Themisto abyssorum, T. libellula, and T. compressa dominated the swimmer biomass, corroborating previous studies. The observed increase of amphipod abundances persisted in all three species, additionally implying that Themisto compressa maintained its population off Svalbard, which appeared for the first time here after a warm anomaly in 2004-2007. This study provides evidence for changes in amphipod community patterns that can mainly be attributed to growing abundances of T. compressa. Similarly, another hyperiid, Lanceola clausii, also increased in abundance over the investigated period. For T. libellula, almost no juvenile individuals were recorded in the sampling period 2013/14, even though juveniles of this species were common in earlier records. The three more years of observations clearly suggest that recently documented environmental shifts persist in the eastern Fram Strait. They also highlight the merit of using sediment trap time series to obtain year-round data sets needed to reveal processes and range shift dynamics in the pelagic system on a long-term basis. publishedVersion Article in Journal/Newspaper Fram Strait Svalbard Themisto abyssorum Themisto LeibnizOpen (The Leibniz Association) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
570 Arctic marine ecology Biodiversity Hyperiids - pelagic amphipods Range shifts Sediment traps |
spellingShingle |
570 Arctic marine ecology Biodiversity Hyperiids - pelagic amphipods Range shifts Sediment traps Schröter, F. Havermans, C. Kraft, A. Knüppel, N. Beszczynska-Möller, A. Bauerfeind, E. Nöthig, E.-M. Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
topic_facet |
570 Arctic marine ecology Biodiversity Hyperiids - pelagic amphipods Range shifts Sediment traps |
description |
Pelagic amphipods represent a large fraction of organisms entering sediment traps as so-called "swimmers." These swimmers were sampled with sediment traps (~200-300 m water depth) with two mooring arrays deployed at two different positions in the Long-Term Ecological Research observatory HAUSGARTEN in the northeastern Fram Strait. This sampling allowed us to investigate amphipod year-round abundances and inter-annual trends from 2000 onward. In this study, newly analyzed data from a 3-years period (August 2011-June 2014) are presented, extending this long-term investigation. In our results, the species Themisto abyssorum, T. libellula, and T. compressa dominated the swimmer biomass, corroborating previous studies. The observed increase of amphipod abundances persisted in all three species, additionally implying that Themisto compressa maintained its population off Svalbard, which appeared for the first time here after a warm anomaly in 2004-2007. This study provides evidence for changes in amphipod community patterns that can mainly be attributed to growing abundances of T. compressa. Similarly, another hyperiid, Lanceola clausii, also increased in abundance over the investigated period. For T. libellula, almost no juvenile individuals were recorded in the sampling period 2013/14, even though juveniles of this species were common in earlier records. The three more years of observations clearly suggest that recently documented environmental shifts persist in the eastern Fram Strait. They also highlight the merit of using sediment trap time series to obtain year-round data sets needed to reveal processes and range shift dynamics in the pelagic system on a long-term basis. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Schröter, F. Havermans, C. Kraft, A. Knüppel, N. Beszczynska-Möller, A. Bauerfeind, E. Nöthig, E.-M. |
author_facet |
Schröter, F. Havermans, C. Kraft, A. Knüppel, N. Beszczynska-Möller, A. Bauerfeind, E. Nöthig, E.-M. |
author_sort |
Schröter, F. |
title |
Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
title_short |
Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
title_full |
Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
title_fullStr |
Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
title_full_unstemmed |
Pelagic amphipods in the eastern fram strait with continuing presence of Themisto compressa based on sediment trap time series |
title_sort |
pelagic amphipods in the eastern fram strait with continuing presence of themisto compressa based on sediment trap time series |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.34657/3705 https://oa.tib.eu/renate/handle/123456789/5076 |
genre |
Fram Strait Svalbard Themisto abyssorum Themisto |
genre_facet |
Fram Strait Svalbard Themisto abyssorum Themisto |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/3705 |
_version_ |
1810444383046074368 |