Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway
In this study, we investigated whether failure of sea urchin recruitment can explain an ongoing phase shift from overgrazed, barren grounds to kelp forests along the coast of mid- Norway. Settlement of sea urchins on artificial substrates deployed in mid-Norway and North Norway was compared on barre...
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Online Access: | http://hdl.handle.net/11250/2508048 https://doi.org/10.3354/meps10413 |
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ftnorskinstvf:oai:niva.brage.unit.no:11250/2508048 2023-05-15T17:39:20+02:00 Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway Fagerli, Camilla With Norderhaug, Kjell Magnus Christie, Hartvig C 2013 application/pdf http://hdl.handle.net/11250/2508048 https://doi.org/10.3354/meps10413 eng eng Inter Research http://www.int-res.com/abstracts/meps/v488/p119-132/ Norges forskningsråd: 184660 Marine Ecology Progress Series. 2013, 488, 119-132. urn:issn:0171-8630 http://hdl.handle.net/11250/2508048 https://doi.org/10.3354/meps10413 cristin:1062119 © Inter-Research 2013 119-132 488 Marine Ecology Progress Series Journal article Peer reviewed 2013 ftnorskinstvf https://doi.org/10.3354/meps10413 2023-02-21T08:45:16Z In this study, we investigated whether failure of sea urchin recruitment can explain an ongoing phase shift from overgrazed, barren grounds to kelp forests along the coast of mid- Norway. Settlement of sea urchins on artificial substrates deployed in mid-Norway and North Norway was compared on barren grounds and in kelp forests. Settlement varied in time and space, and was low in mid-Norway—the area where kelp is recovering. Settlement did not differ between kelp forest and barren grounds. Densities of adult and juvenile sea urchins were estimated and gonad index (GI) was measured in order to relate sea urchin settlement to local population structure and the reproductive potential of the sea urchin populations. Sea urchin density was generally lower in mid-Norway than in North Norway, but reproductive potential did not differ significantly between the areas. Increasing water temperature is considered a critical factor for sea urchin larval development and may be partly to blame for the recent sea urchin recruitment failure in mid-Norway. Lack of sea urchin recruitment may explain the recovery of kelp in mid-Norway. publishedVersion Article in Journal/Newspaper North Norway Norwegian Institute for Water research: NIVA Open Access Archive (Brage) Norway Marine Ecology Progress Series 488 119 132 |
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Open Polar |
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Norwegian Institute for Water research: NIVA Open Access Archive (Brage) |
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ftnorskinstvf |
language |
English |
description |
In this study, we investigated whether failure of sea urchin recruitment can explain an ongoing phase shift from overgrazed, barren grounds to kelp forests along the coast of mid- Norway. Settlement of sea urchins on artificial substrates deployed in mid-Norway and North Norway was compared on barren grounds and in kelp forests. Settlement varied in time and space, and was low in mid-Norway—the area where kelp is recovering. Settlement did not differ between kelp forest and barren grounds. Densities of adult and juvenile sea urchins were estimated and gonad index (GI) was measured in order to relate sea urchin settlement to local population structure and the reproductive potential of the sea urchin populations. Sea urchin density was generally lower in mid-Norway than in North Norway, but reproductive potential did not differ significantly between the areas. Increasing water temperature is considered a critical factor for sea urchin larval development and may be partly to blame for the recent sea urchin recruitment failure in mid-Norway. Lack of sea urchin recruitment may explain the recovery of kelp in mid-Norway. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Fagerli, Camilla With Norderhaug, Kjell Magnus Christie, Hartvig C |
spellingShingle |
Fagerli, Camilla With Norderhaug, Kjell Magnus Christie, Hartvig C Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
author_facet |
Fagerli, Camilla With Norderhaug, Kjell Magnus Christie, Hartvig C |
author_sort |
Fagerli, Camilla With |
title |
Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
title_short |
Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
title_full |
Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
title_fullStr |
Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
title_full_unstemmed |
Lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in Norway |
title_sort |
lack of sea urchin settlement may explain kelp forest recovery in overgrazed areas in norway |
publisher |
Inter Research |
publishDate |
2013 |
url |
http://hdl.handle.net/11250/2508048 https://doi.org/10.3354/meps10413 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
North Norway |
genre_facet |
North Norway |
op_source |
119-132 488 Marine Ecology Progress Series |
op_relation |
http://www.int-res.com/abstracts/meps/v488/p119-132/ Norges forskningsråd: 184660 Marine Ecology Progress Series. 2013, 488, 119-132. urn:issn:0171-8630 http://hdl.handle.net/11250/2508048 https://doi.org/10.3354/meps10413 cristin:1062119 |
op_rights |
© Inter-Research 2013 |
op_doi |
https://doi.org/10.3354/meps10413 |
container_title |
Marine Ecology Progress Series |
container_volume |
488 |
container_start_page |
119 |
op_container_end_page |
132 |
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1766140099567812608 |