Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord
Amid the alarming atmospheric and oceanic warming rates taking place in the Arctic, western fjords around the Svalbard archipelago are experiencing an increased frequency of warm water intrusions in recent decades, causing ecological shifts in their ecosystems. However, hardly anything is known abou...
Published in: | Marine Environmental Research |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://pure.uhi.ac.uk/en/publications/9e443de4-8381-4840-9fd5-bf63e13c7e75 https://doi.org/10.1016/j.marenvres.2023.106046 https://pureadmin.uhi.ac.uk/ws/files/41706409/1_s2.0_S0141113623001745_main.pdf https://linkinghub.elsevier.com/retrieve/pii/S0141113623001745 |
id |
ftuhipublicatio:oai:pure.atira.dk:publications/9e443de4-8381-4840-9fd5-bf63e13c7e75 |
---|---|
record_format |
openpolar |
spelling |
ftuhipublicatio:oai:pure.atira.dk:publications/9e443de4-8381-4840-9fd5-bf63e13c7e75 2024-01-28T10:02:18+01:00 Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord Jordà-Molina, Èric Renaud, Paul e. Silberberger, Marc j. Sen, Arunima Bluhm, Bodil a. Carroll, Michael l. Ambrose, William g. Cottier, Finlo Reiss, Henning 2023-07-01 application/pdf https://pure.uhi.ac.uk/en/publications/9e443de4-8381-4840-9fd5-bf63e13c7e75 https://doi.org/10.1016/j.marenvres.2023.106046 https://pureadmin.uhi.ac.uk/ws/files/41706409/1_s2.0_S0141113623001745_main.pdf https://linkinghub.elsevier.com/retrieve/pii/S0141113623001745 eng eng info:eu-repo/semantics/openAccess Jordà-Molina , È , Renaud , P E , Silberberger , M J , Sen , A , Bluhm , B A , Carroll , M L , Ambrose , W G , Cottier , F & Reiss , H 2023 , ' Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord ' , Marine Environmental Research , vol. 189 , 106046 . https://doi.org/10.1016/j.marenvres.2023.106046 Arctic Benthic communities Marine Heatwaves (MHWs) Fjord Coastal Environment Community change Time series Ecosystem disturbance article 2023 ftuhipublicatio https://doi.org/10.1016/j.marenvres.2023.106046 2024-01-04T23:21:39Z Amid the alarming atmospheric and oceanic warming rates taking place in the Arctic, western fjords around the Svalbard archipelago are experiencing an increased frequency of warm water intrusions in recent decades, causing ecological shifts in their ecosystems. However, hardly anything is known about their potential impacts on the until recently considered stable and colder northern fjords. We analyzed macrobenthic fauna from four locations in Rijpfjorden (a high-Arctic fjord in the north of Svalbard) along its axis, sampled intermittently in the years 2003, 2007, 2010, 2013 and 2017. After a strong seafloor warm water temperature anomaly (SfWWTA) in 2006, the abundance of individuals and species richness dropped significantly across the entire fjord in 2007, together with diversity declines at the outer parts (reflected in Shannon index drops) and increases in beta diversity between inner and outer parts of the fjord. After a period of three years with stable water temperatures and higher sea-ice cover, communities recovered through recolonization processes by 2010, leading to homogenization in community composition across the fjord and less beta diversity. For the last two periods (2010-2013 and 2013-2017), beta diversity between the inner and outer parts gradually increased again, and both the inner and outer sites started to re-assemble in different directions. A few taxa began to dominate the fjord from 2010 onwards at the outer parts, translating into evenness and diversity drops. The inner basin, however, although experiencing strong shifts in abundances, was partially protected by a fjordic sill from impacts of these temperature anomalies and remained comparatively more stable regarding community diversity after the disturbance event. Our results indicate that although shifts in abundances were behind important spatio-temporal community fluctuations, beta diversity variations were also driven by the occurrence-based macrofauna data, suggesting an important role of rare taxa. This is the first ... Article in Journal/Newspaper Arctic Arctic Rijpfjord* Sea ice Svalbard University of the Highlands and Islands: Research Database of UHI Arctic Rijpfjorden ENVELOPE(22.188,22.188,80.165,80.165) Svalbard Svalbard Archipelago Marine Environmental Research 189 106046 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Arctic Benthic communities Marine Heatwaves (MHWs) Fjord Coastal Environment Community change Time series Ecosystem disturbance |
spellingShingle |
Arctic Benthic communities Marine Heatwaves (MHWs) Fjord Coastal Environment Community change Time series Ecosystem disturbance Jordà-Molina, Èric Renaud, Paul e. Silberberger, Marc j. Sen, Arunima Bluhm, Bodil a. Carroll, Michael l. Ambrose, William g. Cottier, Finlo Reiss, Henning Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
topic_facet |
Arctic Benthic communities Marine Heatwaves (MHWs) Fjord Coastal Environment Community change Time series Ecosystem disturbance |
description |
Amid the alarming atmospheric and oceanic warming rates taking place in the Arctic, western fjords around the Svalbard archipelago are experiencing an increased frequency of warm water intrusions in recent decades, causing ecological shifts in their ecosystems. However, hardly anything is known about their potential impacts on the until recently considered stable and colder northern fjords. We analyzed macrobenthic fauna from four locations in Rijpfjorden (a high-Arctic fjord in the north of Svalbard) along its axis, sampled intermittently in the years 2003, 2007, 2010, 2013 and 2017. After a strong seafloor warm water temperature anomaly (SfWWTA) in 2006, the abundance of individuals and species richness dropped significantly across the entire fjord in 2007, together with diversity declines at the outer parts (reflected in Shannon index drops) and increases in beta diversity between inner and outer parts of the fjord. After a period of three years with stable water temperatures and higher sea-ice cover, communities recovered through recolonization processes by 2010, leading to homogenization in community composition across the fjord and less beta diversity. For the last two periods (2010-2013 and 2013-2017), beta diversity between the inner and outer parts gradually increased again, and both the inner and outer sites started to re-assemble in different directions. A few taxa began to dominate the fjord from 2010 onwards at the outer parts, translating into evenness and diversity drops. The inner basin, however, although experiencing strong shifts in abundances, was partially protected by a fjordic sill from impacts of these temperature anomalies and remained comparatively more stable regarding community diversity after the disturbance event. Our results indicate that although shifts in abundances were behind important spatio-temporal community fluctuations, beta diversity variations were also driven by the occurrence-based macrofauna data, suggesting an important role of rare taxa. This is the first ... |
format |
Article in Journal/Newspaper |
author |
Jordà-Molina, Èric Renaud, Paul e. Silberberger, Marc j. Sen, Arunima Bluhm, Bodil a. Carroll, Michael l. Ambrose, William g. Cottier, Finlo Reiss, Henning |
author_facet |
Jordà-Molina, Èric Renaud, Paul e. Silberberger, Marc j. Sen, Arunima Bluhm, Bodil a. Carroll, Michael l. Ambrose, William g. Cottier, Finlo Reiss, Henning |
author_sort |
Jordà-Molina, Èric |
title |
Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
title_short |
Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
title_full |
Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
title_fullStr |
Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
title_full_unstemmed |
Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord |
title_sort |
seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-arctic cold-water fjord |
publishDate |
2023 |
url |
https://pure.uhi.ac.uk/en/publications/9e443de4-8381-4840-9fd5-bf63e13c7e75 https://doi.org/10.1016/j.marenvres.2023.106046 https://pureadmin.uhi.ac.uk/ws/files/41706409/1_s2.0_S0141113623001745_main.pdf https://linkinghub.elsevier.com/retrieve/pii/S0141113623001745 |
long_lat |
ENVELOPE(22.188,22.188,80.165,80.165) |
geographic |
Arctic Rijpfjorden Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Rijpfjorden Svalbard Svalbard Archipelago |
genre |
Arctic Arctic Rijpfjord* Sea ice Svalbard |
genre_facet |
Arctic Arctic Rijpfjord* Sea ice Svalbard |
op_source |
Jordà-Molina , È , Renaud , P E , Silberberger , M J , Sen , A , Bluhm , B A , Carroll , M L , Ambrose , W G , Cottier , F & Reiss , H 2023 , ' Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord ' , Marine Environmental Research , vol. 189 , 106046 . https://doi.org/10.1016/j.marenvres.2023.106046 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.marenvres.2023.106046 |
container_title |
Marine Environmental Research |
container_volume |
189 |
container_start_page |
106046 |
_version_ |
1789327729604165632 |