On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux
The development and decline of a phytoplankton spring bloom dominated by the prymnesiophyte Phaeocystis pouchetii were studied in Balsfjord, northern Norway between 30 March and 27 May 1992. At a fixed station, the concentration and composition of suspended particulate matter was monitored and compa...
Published in: | Netherlands Journal of Sea Research |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wolters
1995
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Online Access: | https://oceanrep.geomar.de/id/eprint/7100/ https://oceanrep.geomar.de/id/eprint/7100/1/1-s2.0-0077757995900063-main.pdf https://doi.org/10.1016/0077-7579(95)90006-3 |
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ftoceanrep:oai:oceanrep.geomar.de:7100 2023-05-15T15:37:27+02:00 On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux Riebesell, Ulf Reigstad, M. Wassmann, P. Noji, T. Passow, U. 1995 text https://oceanrep.geomar.de/id/eprint/7100/ https://oceanrep.geomar.de/id/eprint/7100/1/1-s2.0-0077757995900063-main.pdf https://doi.org/10.1016/0077-7579(95)90006-3 en eng Wolters https://oceanrep.geomar.de/id/eprint/7100/1/1-s2.0-0077757995900063-main.pdf Riebesell, U. , Reigstad, M., Wassmann, P., Noji, T. and Passow, U. (1995) On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux. Netherlands Journal of Sea Research, 33 (2). pp. 193-203. DOI 10.1016/0077-7579(95)90006-3 <https://doi.org/10.1016/0077-7579%2895%2990006-3>. doi:10.1016/0077-7579(95)90006-3 info:eu-repo/semantics/closedAccess Article PeerReviewed 1995 ftoceanrep https://doi.org/10.1016/0077-7579(95)90006-3 2023-04-07T14:54:10Z The development and decline of a phytoplankton spring bloom dominated by the prymnesiophyte Phaeocystis pouchetii were studied in Balsfjord, northern Norway between 30 March and 27 May 1992. At a fixed station, the concentration and composition of suspended particulate matter was monitored and compared to the particulate matter collected in sediment traps at six different depths. Direct sedimentation of phytoplankton contributed a minor fraction to particle flux and was confined to a few diatom genera. No evidence was found for pronounced aggregation of Phaeocystis colonies during bloom decline or direct sedimentation of either Phaeocystis colonies or single cells, Particle flux was dominated by faecal-pellet sedimentation during most of the study period, suggesting zooplankton grazing to be a main loss factor. Despite an abrupt decrease in faecal-pellet sedimentation after the decline of the bloom, particulate-carbon sedimentation rates remained high. High post-bloom sedimentation rates were characterized by elevated C/N and C/Chl a ratios of largely amorphous sedimented material. Post-bloom sedimentation coincided with a decrease in transparent exopolymeric particles (TEP) in the surface layer, suggesting that this change resulted from aggregation and sedimentation of carbon-rich exopolymeric material accumulated in the surface layer in the course of the bloom. While organic-carbon accumulation indicates the significance of disintegration of Phaeocystis colonies, post-bloom mucilage sedimentation could be a secondary pathway for the vertical flux of Phaeocystis-derived organic matter. Article in Journal/Newspaper Balsfjord Northern Norway OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) Norway Netherlands Journal of Sea Research 33 2 193 203 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The development and decline of a phytoplankton spring bloom dominated by the prymnesiophyte Phaeocystis pouchetii were studied in Balsfjord, northern Norway between 30 March and 27 May 1992. At a fixed station, the concentration and composition of suspended particulate matter was monitored and compared to the particulate matter collected in sediment traps at six different depths. Direct sedimentation of phytoplankton contributed a minor fraction to particle flux and was confined to a few diatom genera. No evidence was found for pronounced aggregation of Phaeocystis colonies during bloom decline or direct sedimentation of either Phaeocystis colonies or single cells, Particle flux was dominated by faecal-pellet sedimentation during most of the study period, suggesting zooplankton grazing to be a main loss factor. Despite an abrupt decrease in faecal-pellet sedimentation after the decline of the bloom, particulate-carbon sedimentation rates remained high. High post-bloom sedimentation rates were characterized by elevated C/N and C/Chl a ratios of largely amorphous sedimented material. Post-bloom sedimentation coincided with a decrease in transparent exopolymeric particles (TEP) in the surface layer, suggesting that this change resulted from aggregation and sedimentation of carbon-rich exopolymeric material accumulated in the surface layer in the course of the bloom. While organic-carbon accumulation indicates the significance of disintegration of Phaeocystis colonies, post-bloom mucilage sedimentation could be a secondary pathway for the vertical flux of Phaeocystis-derived organic matter. |
format |
Article in Journal/Newspaper |
author |
Riebesell, Ulf Reigstad, M. Wassmann, P. Noji, T. Passow, U. |
spellingShingle |
Riebesell, Ulf Reigstad, M. Wassmann, P. Noji, T. Passow, U. On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
author_facet |
Riebesell, Ulf Reigstad, M. Wassmann, P. Noji, T. Passow, U. |
author_sort |
Riebesell, Ulf |
title |
On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
title_short |
On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
title_full |
On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
title_fullStr |
On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
title_full_unstemmed |
On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux |
title_sort |
on the trophic fate of phaeocystis pouchetii (hariot): vi. significance of phaeocystis-derived mucus for vertical flux |
publisher |
Wolters |
publishDate |
1995 |
url |
https://oceanrep.geomar.de/id/eprint/7100/ https://oceanrep.geomar.de/id/eprint/7100/1/1-s2.0-0077757995900063-main.pdf https://doi.org/10.1016/0077-7579(95)90006-3 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Balsfjord Norway |
geographic_facet |
Balsfjord Norway |
genre |
Balsfjord Northern Norway |
genre_facet |
Balsfjord Northern Norway |
op_relation |
https://oceanrep.geomar.de/id/eprint/7100/1/1-s2.0-0077757995900063-main.pdf Riebesell, U. , Reigstad, M., Wassmann, P., Noji, T. and Passow, U. (1995) On the trophic fate of Phaeocystis pouchetii (Hariot): VI. Significance of Phaeocystis-derived mucus for vertical flux. Netherlands Journal of Sea Research, 33 (2). pp. 193-203. DOI 10.1016/0077-7579(95)90006-3 <https://doi.org/10.1016/0077-7579%2895%2990006-3>. doi:10.1016/0077-7579(95)90006-3 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/0077-7579(95)90006-3 |
container_title |
Netherlands Journal of Sea Research |
container_volume |
33 |
container_issue |
2 |
container_start_page |
193 |
op_container_end_page |
203 |
_version_ |
1766368017279614976 |