The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on
Few studies have described the effects of physical disturbance and post-recovery of deep-sea benthic communities. Here, we explore the status of deep-sea sponge ground communities four years after being impacted by an experimental bottom trawl. The diversity and abundance of epibenthic megafauna of...
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ftdoajarticles:oai:doaj.org/article:7938294c2955483282b002ccb2a197ec 2023-05-15T14:58:40+02:00 The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on Katelin M. Morrison Heidi Kristina Meyer Emyr Martyn Roberts Hans Tore Rapp Ana Colaço Christopher Kim Pham 2020-12-01T00:00:00Z https://doi.org/10.3389/fmars.2020.605281 https://doaj.org/article/7938294c2955483282b002ccb2a197ec EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2020.605281/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.605281 https://doaj.org/article/7938294c2955483282b002ccb2a197ec Frontiers in Marine Science, Vol 7 (2020) recovery fishing sponge ground trawling seamount Arctic mid-ocean ridge Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.605281 2022-12-31T06:09:43Z Few studies have described the effects of physical disturbance and post-recovery of deep-sea benthic communities. Here, we explore the status of deep-sea sponge ground communities four years after being impacted by an experimental bottom trawl. The diversity and abundance of epibenthic megafauna of two distinct benthic communities in disturbed versus control areas were surveyed using a remotely operated vehicle on the Schulz Bank, Arctic Ocean. Four years after disturbance, megafaunal densities of the shallow (∼600 m depth) and deep (∼1,400 m depth) sites were significantly lower on the disturbed patches compared to the control areas. Multivariate analyses revealed a distinct separation between disturbed and control communities for both sites, with trawling causing 29–58% of the variation. Many epibenthic morphotypes were significantly impacted by the trawl, including ascidians, Geodia parva, Hexactinellida spp., Craniella infrequens, Lissodendoryx complicata, Haliclonia sp. Stylocordyla borealis, Gersemia rubiformis and Actiniaria sp. However, we found some smaller morphospecies to be equally abundant with control transects, including Polymastia thielei, Geodia hentscheli, and Stelletta rhaphidiophora, reflecting lower trawl impact for these morphotypes. Overall, our results suggest that these are fragile ecosystems that require much more time than four years to recover from physical disturbance typical of trawling activities. Article in Journal/Newspaper Arctic Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Schulz Bank ENVELOPE(7.500,7.500,73.867,73.867) Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
recovery fishing sponge ground trawling seamount Arctic mid-ocean ridge Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
recovery fishing sponge ground trawling seamount Arctic mid-ocean ridge Science Q General. Including nature conservation geographical distribution QH1-199.5 Katelin M. Morrison Heidi Kristina Meyer Emyr Martyn Roberts Hans Tore Rapp Ana Colaço Christopher Kim Pham The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
topic_facet |
recovery fishing sponge ground trawling seamount Arctic mid-ocean ridge Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Few studies have described the effects of physical disturbance and post-recovery of deep-sea benthic communities. Here, we explore the status of deep-sea sponge ground communities four years after being impacted by an experimental bottom trawl. The diversity and abundance of epibenthic megafauna of two distinct benthic communities in disturbed versus control areas were surveyed using a remotely operated vehicle on the Schulz Bank, Arctic Ocean. Four years after disturbance, megafaunal densities of the shallow (∼600 m depth) and deep (∼1,400 m depth) sites were significantly lower on the disturbed patches compared to the control areas. Multivariate analyses revealed a distinct separation between disturbed and control communities for both sites, with trawling causing 29–58% of the variation. Many epibenthic morphotypes were significantly impacted by the trawl, including ascidians, Geodia parva, Hexactinellida spp., Craniella infrequens, Lissodendoryx complicata, Haliclonia sp. Stylocordyla borealis, Gersemia rubiformis and Actiniaria sp. However, we found some smaller morphospecies to be equally abundant with control transects, including Polymastia thielei, Geodia hentscheli, and Stelletta rhaphidiophora, reflecting lower trawl impact for these morphotypes. Overall, our results suggest that these are fragile ecosystems that require much more time than four years to recover from physical disturbance typical of trawling activities. |
format |
Article in Journal/Newspaper |
author |
Katelin M. Morrison Heidi Kristina Meyer Emyr Martyn Roberts Hans Tore Rapp Ana Colaço Christopher Kim Pham |
author_facet |
Katelin M. Morrison Heidi Kristina Meyer Emyr Martyn Roberts Hans Tore Rapp Ana Colaço Christopher Kim Pham |
author_sort |
Katelin M. Morrison |
title |
The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
title_short |
The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
title_full |
The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
title_fullStr |
The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
title_full_unstemmed |
The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on |
title_sort |
first cut is the deepest: trawl effects on a deep-sea sponge ground are pronounced four years on |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.605281 https://doaj.org/article/7938294c2955483282b002ccb2a197ec |
long_lat |
ENVELOPE(7.500,7.500,73.867,73.867) |
geographic |
Arctic Arctic Ocean Schulz Bank |
geographic_facet |
Arctic Arctic Ocean Schulz Bank |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2020.605281/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.605281 https://doaj.org/article/7938294c2955483282b002ccb2a197ec |
op_doi |
https://doi.org/10.3389/fmars.2020.605281 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766330795872485376 |