Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN
Time-series studies of arctic marine ecosystems are rare. This is not surprising since polar regions are largely only accessible by means of expensive modern infrastructure and instrumentation. In 1999, the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) established th...
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ftawi:oai:epic.awi.de:37840 2023-05-15T14:28:06+02:00 Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN Soltwedel, Thomas Bauerfeind, Eduard Bergmann, Melanie Bracher, Astrid Budaeva, Nataliya Busch, Katarzyna Cherkasheva, Alexandra Fahl, Kirsten Grzelak, Katarzyna Hasemann, Christiane Jacob, Marianne Kraft, Angelina Lalande, Catherine Metfies, Katja Nöthig, Eva-Maria Meyer, Kirstin Quéric, Nadia-Valérie Schewe, Ingo Wlodarska-Kowalczuk, Maria Klages, Michael 2016 https://epic.awi.de/id/eprint/37840/ https://hdl.handle.net/10013/epic.46244 unknown ELSEVIER SCIENCE BV Soltwedel, T. orcid:0000-0002-8214-5937 , Bauerfeind, E. , Bergmann, M. orcid:0000-0001-5212-9808 , Bracher, A. orcid:0000-0003-3025-5517 , Budaeva, N. , Busch, K. , Cherkasheva, A. , Fahl, K. orcid:0000-0001-9317-4656 , Grzelak, K. , Hasemann, C. , Jacob, M. , Kraft, A. , Lalande, C. , Metfies, K. orcid:0000-0003-3073-8033 , Nöthig, E. M. orcid:0000-0002-7527-7827 , Meyer, K. , Quéric, N. V. , Schewe, I. orcid:0000-0003-3372-3224 , Wlodarska-Kowalczuk, M. and Klages, M. (2016) Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN , Ecological Indicators, 65 , pp. 89-102 . doi:10.1016/j.ecolind.2015.10.001 <https://doi.org/10.1016/j.ecolind.2015.10.001> , hdl:10013/epic.46244 EPIC3Ecological Indicators, ELSEVIER SCIENCE BV, 65, pp. 89-102, ISSN: 1470-160X Article isiRev 2016 ftawi 2021-12-24T15:40:26Z Time-series studies of arctic marine ecosystems are rare. This is not surprising since polar regions are largely only accessible by means of expensive modern infrastructure and instrumentation. In 1999, the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) established the LTER (Long-Term Ecological Research) observatory HAUSGARTEN crossing the Fram Strait at about 79°N. Multidisciplinary investigations covering all parts of the open-ocean ecosystem are carried out at a total of 21 permanent sampling sites in water depths ranging between 250 and 5,500 m. From the outset, repeated sampling in the water column and at the deep seafloor during regular expeditions in summer months was complemented by continuous year-round sampling and sensing using autonomous instruments in anchored devices (i.e., moorings and free-falling systems). The central HAUSGARTEN station at 2,500 m water depth in the eastern Fram Strait serves as an experimental area for unique biological in situ experiments at the seafloor, simulating various scenarios in changing environmental settings. Long-term ecological research at the HAUSGARTEN observatory revealed a number of interesting temporal trends in numerous biological variables from the pelagic system to the deep seafloor. Contrary to common intuition, the entire ecosystem responded exceptionally fast to environmental changes in the upper water column. Major variations were associated with a warm water anomaly evident in surface waters in eastern parts of the Fram Strait between 2005 and 2008. However, even after 15 years of intense time-series work at HAUSGARTEN, we cannot yet predict with complete certainty whether these trends indicate lasting alterations due to anthropologically-induced global environmental changes of the system, or whether they reflect natural variability on multiyear time-scales, for example, in relation to decadal oscillatory atmospheric processes. Article in Journal/Newspaper Arctic Arctic Fram Strait Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Ecological Indicators 65 89 102 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Time-series studies of arctic marine ecosystems are rare. This is not surprising since polar regions are largely only accessible by means of expensive modern infrastructure and instrumentation. In 1999, the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) established the LTER (Long-Term Ecological Research) observatory HAUSGARTEN crossing the Fram Strait at about 79°N. Multidisciplinary investigations covering all parts of the open-ocean ecosystem are carried out at a total of 21 permanent sampling sites in water depths ranging between 250 and 5,500 m. From the outset, repeated sampling in the water column and at the deep seafloor during regular expeditions in summer months was complemented by continuous year-round sampling and sensing using autonomous instruments in anchored devices (i.e., moorings and free-falling systems). The central HAUSGARTEN station at 2,500 m water depth in the eastern Fram Strait serves as an experimental area for unique biological in situ experiments at the seafloor, simulating various scenarios in changing environmental settings. Long-term ecological research at the HAUSGARTEN observatory revealed a number of interesting temporal trends in numerous biological variables from the pelagic system to the deep seafloor. Contrary to common intuition, the entire ecosystem responded exceptionally fast to environmental changes in the upper water column. Major variations were associated with a warm water anomaly evident in surface waters in eastern parts of the Fram Strait between 2005 and 2008. However, even after 15 years of intense time-series work at HAUSGARTEN, we cannot yet predict with complete certainty whether these trends indicate lasting alterations due to anthropologically-induced global environmental changes of the system, or whether they reflect natural variability on multiyear time-scales, for example, in relation to decadal oscillatory atmospheric processes. |
format |
Article in Journal/Newspaper |
author |
Soltwedel, Thomas Bauerfeind, Eduard Bergmann, Melanie Bracher, Astrid Budaeva, Nataliya Busch, Katarzyna Cherkasheva, Alexandra Fahl, Kirsten Grzelak, Katarzyna Hasemann, Christiane Jacob, Marianne Kraft, Angelina Lalande, Catherine Metfies, Katja Nöthig, Eva-Maria Meyer, Kirstin Quéric, Nadia-Valérie Schewe, Ingo Wlodarska-Kowalczuk, Maria Klages, Michael |
spellingShingle |
Soltwedel, Thomas Bauerfeind, Eduard Bergmann, Melanie Bracher, Astrid Budaeva, Nataliya Busch, Katarzyna Cherkasheva, Alexandra Fahl, Kirsten Grzelak, Katarzyna Hasemann, Christiane Jacob, Marianne Kraft, Angelina Lalande, Catherine Metfies, Katja Nöthig, Eva-Maria Meyer, Kirstin Quéric, Nadia-Valérie Schewe, Ingo Wlodarska-Kowalczuk, Maria Klages, Michael Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
author_facet |
Soltwedel, Thomas Bauerfeind, Eduard Bergmann, Melanie Bracher, Astrid Budaeva, Nataliya Busch, Katarzyna Cherkasheva, Alexandra Fahl, Kirsten Grzelak, Katarzyna Hasemann, Christiane Jacob, Marianne Kraft, Angelina Lalande, Catherine Metfies, Katja Nöthig, Eva-Maria Meyer, Kirstin Quéric, Nadia-Valérie Schewe, Ingo Wlodarska-Kowalczuk, Maria Klages, Michael |
author_sort |
Soltwedel, Thomas |
title |
Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
title_short |
Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
title_full |
Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
title_fullStr |
Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
title_full_unstemmed |
Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN |
title_sort |
natural variability or anthropogenically-induced variation? insights from 15 years of multidisciplinary observations at the arctic open-ocean lter site hausgarten |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/37840/ https://hdl.handle.net/10013/epic.46244 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Fram Strait |
genre_facet |
Arctic Arctic Fram Strait |
op_source |
EPIC3Ecological Indicators, ELSEVIER SCIENCE BV, 65, pp. 89-102, ISSN: 1470-160X |
op_relation |
Soltwedel, T. orcid:0000-0002-8214-5937 , Bauerfeind, E. , Bergmann, M. orcid:0000-0001-5212-9808 , Bracher, A. orcid:0000-0003-3025-5517 , Budaeva, N. , Busch, K. , Cherkasheva, A. , Fahl, K. orcid:0000-0001-9317-4656 , Grzelak, K. , Hasemann, C. , Jacob, M. , Kraft, A. , Lalande, C. , Metfies, K. orcid:0000-0003-3073-8033 , Nöthig, E. M. orcid:0000-0002-7527-7827 , Meyer, K. , Quéric, N. V. , Schewe, I. orcid:0000-0003-3372-3224 , Wlodarska-Kowalczuk, M. and Klages, M. (2016) Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic open-ocean LTER site HAUSGARTEN , Ecological Indicators, 65 , pp. 89-102 . doi:10.1016/j.ecolind.2015.10.001 <https://doi.org/10.1016/j.ecolind.2015.10.001> , hdl:10013/epic.46244 |
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Ecological Indicators |
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