Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment
Community approaches to investigating ocean acidification (OA) effects suggest a high tolerance of micro-and mesozooplankton to carbonate chemistry changes expected to occur within this century. Plankton communities in the coastal areas of the Baltic Sea frequently experience pH variations partly ex...
Published in: | Biogeosciences |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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COPERNICUS GESELLSCHAFT MBH
2018
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Online Access: | http://hdl.handle.net/10138/231627 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/231627 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
HERRING CLUPEA-HARENGUS SPRAT SPRATTUS-SPRATTUS OCEAN ACIDIFICATION ELEVATED CO2 CO2-INDUCED ACIDIFICATION PLANKTON COMMUNITIES BOSMINA-LONGIROSTRIS MYRIONECTA-RUBRA INCREASED PCO(2) GRAZING IMPACT 1181 Ecology evolutionary biology |
spellingShingle |
HERRING CLUPEA-HARENGUS SPRAT SPRATTUS-SPRATTUS OCEAN ACIDIFICATION ELEVATED CO2 CO2-INDUCED ACIDIFICATION PLANKTON COMMUNITIES BOSMINA-LONGIROSTRIS MYRIONECTA-RUBRA INCREASED PCO(2) GRAZING IMPACT 1181 Ecology evolutionary biology Lischka, Silke Bach, Lennart T. Schulz, Kai-Georg Riebesell, Ulf Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
topic_facet |
HERRING CLUPEA-HARENGUS SPRAT SPRATTUS-SPRATTUS OCEAN ACIDIFICATION ELEVATED CO2 CO2-INDUCED ACIDIFICATION PLANKTON COMMUNITIES BOSMINA-LONGIROSTRIS MYRIONECTA-RUBRA INCREASED PCO(2) GRAZING IMPACT 1181 Ecology evolutionary biology |
description |
Community approaches to investigating ocean acidification (OA) effects suggest a high tolerance of micro-and mesozooplankton to carbonate chemistry changes expected to occur within this century. Plankton communities in the coastal areas of the Baltic Sea frequently experience pH variations partly exceeding projections for the near future both on a diurnal and seasonal basis. We conducted a large-scale mesocosm CO2 enrichment experiment (similar to 55m(3)) enclosing the natural plankton community in Tvarminne Storfjarden for 8 weeks during June-August 2012 and studied community and species-taxon response of ciliates and mesozooplankton to CO2 elevations expected for this century. In addition to the response to fCO(2), we also considered temperature and chlorophyll a variations in our analyses. Shannon diversity of ciliates significantly decreased with fCO(2) and temperature with a greater dominance of smaller species. The mixotrophic Myrionecta rubra seemed to indirectly and directly benefit from higher CO2 concentrations in the post-bloom phase through increased occurrence of picoeukaryotes (most likely Cryptophytes) and Dinophyta at higher CO2 levels. With respect to mesozooplankton, we did not detect significant effects for either total abundance or for Shannon diversity. The cladocera Bosmina sp. occurred at distinctly higher abundance for a short time period during the second half of the experiment in three of the CO2-enriched mesocosms except for the highest CO2 level. The ratio of Bosmina sp. with empty to embryo-or resting-eggbearing brood chambers, however, was significantly affected by CO2, temperature, and chlorophyll a. An indirect CO2 effect via increased food availability (Cyanobacteria) stimulating Bosmina sp. reproduction cannot be ruled out. Although increased regenerated primary production diminishes trophic transfer in general, the presence of organisms able to graze on bacteria such as cladocerans may positively impact organic matter transfer to higher trophic levels. Thus, under increasing OA ... |
author2 |
Tvärminne Zoological Station |
format |
Article in Journal/Newspaper |
author |
Lischka, Silke Bach, Lennart T. Schulz, Kai-Georg Riebesell, Ulf |
author_facet |
Lischka, Silke Bach, Lennart T. Schulz, Kai-Georg Riebesell, Ulf |
author_sort |
Lischka, Silke |
title |
Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
title_short |
Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
title_full |
Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
title_fullStr |
Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
title_full_unstemmed |
Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment |
title_sort |
ciliate and mesozooplankton community response to increasing co2 levels in the baltic sea : insights from a large-scale mesocosm experiment |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2018 |
url |
http://hdl.handle.net/10138/231627 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
10.5194/bg-14-447-2017 We would like to thank all participants of this KOSMOS study for all the support during this mesocosm experiment. Special thanks to Andrea Ludwig for organizing logistics and assistance with CTD operations, the diving team, Anna-Karin Almen, Andreas Brutemark, Jonna Engstrom-Ost, and Anu Vehmaa for assistance with the zooplankton collections, Nicole Aberle-Mahlzahn and Mathias Haunost for advice with ciliate identifications, and Isabel Dorner for assistance with mesozooplankton enumerations. We also thank the crew of R/V Alkor (AL394, AL397) for transportation, deployment, and recovery of the mesocosms. The Tvarminne Zoological Station is gratefully acknowledged for kind hospitality and logistic and facility support. This collaborative study received funding from the German BMBF (Federal Ministry of Education and Research) projects BIOACID II (FKZ 03F06550) and SOPRAN Phase II (FKZ 03F0611). Lischka , S , Bach , L T , Schulz , K-G & Riebesell , U 2017 , ' Ciliate and mesozooplankton community response to increasing CO 2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment ' , Biogeosciences , vol. 14 , no. 2 , pp. 447-466 . https://doi.org/10.5194/bg-14-447-2017 85011093342 bb4fb24e-f0a1-4647-af7b-b6df70c5ee43 http://hdl.handle.net/10138/231627 000395169200001 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
2 |
container_start_page |
447 |
op_container_end_page |
466 |
_version_ |
1787427309867761664 |
spelling |
ftunivhelsihelda:oai:helda.helsinki.fi:10138/231627 2024-01-07T09:45:43+01:00 Ciliate and mesozooplankton community response to increasing CO2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment Lischka, Silke Bach, Lennart T. Schulz, Kai-Georg Riebesell, Ulf Tvärminne Zoological Station 2018-01-26T10:10:01Z 20 application/pdf http://hdl.handle.net/10138/231627 eng eng COPERNICUS GESELLSCHAFT MBH 10.5194/bg-14-447-2017 We would like to thank all participants of this KOSMOS study for all the support during this mesocosm experiment. Special thanks to Andrea Ludwig for organizing logistics and assistance with CTD operations, the diving team, Anna-Karin Almen, Andreas Brutemark, Jonna Engstrom-Ost, and Anu Vehmaa for assistance with the zooplankton collections, Nicole Aberle-Mahlzahn and Mathias Haunost for advice with ciliate identifications, and Isabel Dorner for assistance with mesozooplankton enumerations. We also thank the crew of R/V Alkor (AL394, AL397) for transportation, deployment, and recovery of the mesocosms. The Tvarminne Zoological Station is gratefully acknowledged for kind hospitality and logistic and facility support. This collaborative study received funding from the German BMBF (Federal Ministry of Education and Research) projects BIOACID II (FKZ 03F06550) and SOPRAN Phase II (FKZ 03F0611). Lischka , S , Bach , L T , Schulz , K-G & Riebesell , U 2017 , ' Ciliate and mesozooplankton community response to increasing CO 2 levels in the Baltic Sea : insights from a large-scale mesocosm experiment ' , Biogeosciences , vol. 14 , no. 2 , pp. 447-466 . https://doi.org/10.5194/bg-14-447-2017 85011093342 bb4fb24e-f0a1-4647-af7b-b6df70c5ee43 http://hdl.handle.net/10138/231627 000395169200001 cc_by openAccess info:eu-repo/semantics/openAccess HERRING CLUPEA-HARENGUS SPRAT SPRATTUS-SPRATTUS OCEAN ACIDIFICATION ELEVATED CO2 CO2-INDUCED ACIDIFICATION PLANKTON COMMUNITIES BOSMINA-LONGIROSTRIS MYRIONECTA-RUBRA INCREASED PCO(2) GRAZING IMPACT 1181 Ecology evolutionary biology Article publishedVersion 2018 ftunivhelsihelda 2023-12-14T00:04:37Z Community approaches to investigating ocean acidification (OA) effects suggest a high tolerance of micro-and mesozooplankton to carbonate chemistry changes expected to occur within this century. Plankton communities in the coastal areas of the Baltic Sea frequently experience pH variations partly exceeding projections for the near future both on a diurnal and seasonal basis. We conducted a large-scale mesocosm CO2 enrichment experiment (similar to 55m(3)) enclosing the natural plankton community in Tvarminne Storfjarden for 8 weeks during June-August 2012 and studied community and species-taxon response of ciliates and mesozooplankton to CO2 elevations expected for this century. In addition to the response to fCO(2), we also considered temperature and chlorophyll a variations in our analyses. Shannon diversity of ciliates significantly decreased with fCO(2) and temperature with a greater dominance of smaller species. The mixotrophic Myrionecta rubra seemed to indirectly and directly benefit from higher CO2 concentrations in the post-bloom phase through increased occurrence of picoeukaryotes (most likely Cryptophytes) and Dinophyta at higher CO2 levels. With respect to mesozooplankton, we did not detect significant effects for either total abundance or for Shannon diversity. The cladocera Bosmina sp. occurred at distinctly higher abundance for a short time period during the second half of the experiment in three of the CO2-enriched mesocosms except for the highest CO2 level. The ratio of Bosmina sp. with empty to embryo-or resting-eggbearing brood chambers, however, was significantly affected by CO2, temperature, and chlorophyll a. An indirect CO2 effect via increased food availability (Cyanobacteria) stimulating Bosmina sp. reproduction cannot be ruled out. Although increased regenerated primary production diminishes trophic transfer in general, the presence of organisms able to graze on bacteria such as cladocerans may positively impact organic matter transfer to higher trophic levels. Thus, under increasing OA ... Article in Journal/Newspaper Ocean acidification HELDA – University of Helsinki Open Repository Biogeosciences 14 2 447 466 |