Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms
The impact of fish and cyclopoid copepod predation on zooplankton communities was evaluated using large-volume mesocosms (depth 9.5 m; volume 13 m3) in the Římov reservoir (Czech Republic). Two yearling roach and perch individuals introduced into mesocosms represented the fish treatment, which was c...
Published in: | Annales de Limnologie - International Journal of Limnology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | https://doi.org/10.1051/limn/2014001 http://hdl.handle.net/11104/0232561 |
id |
ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0426957 |
---|---|
record_format |
openpolar |
spelling |
ftczacademyscien:oai:asep.lib.cas.cz:CavUnEpca/0426957 2024-02-04T10:05:17+01:00 Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms Šorf, M. Brandl, Z. Znachor, P. (Petr) Vašek, M. (Mojmír) 2014 https://doi.org/10.1051/limn/2014001 http://hdl.handle.net/11104/0232561 eng eng doi:10.1051/limn/2014001 urn:pissn: 0003-4088 urn:eissn: 2100-000x http://hdl.handle.net/11104/0232561 predation zooplankton perch roach mesocosms info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftczacademyscien https://doi.org/10.1051/limn/2014001 2024-01-09T17:27:32Z The impact of fish and cyclopoid copepod predation on zooplankton communities was evaluated using large-volume mesocosms (depth 9.5 m; volume 13 m3) in the Římov reservoir (Czech Republic). Two yearling roach and perch individuals introduced into mesocosms represented the fish treatment, which was compared to cyclopoid copepods (initial abundance of 2 ind.L−1) and a control with no initial addition of predators. Our results clearly support the hypothesis that planktivorous fish feeding leads to the suppression of large-bodied cladocerans. In the presence of fish, the cladoceran community changed from a dominance of large-bodied Daphnia spp. at the beginning to dominance by the smaller Bosmina longirostris at the end of the experiment. Chlorophyll-a concentration and rotifer abundances increased in the absence of daphnids. In the absence of fish, the presence of large-bodied cladocerans resulted in decreasing chlorophyll-a concentration. Although no significant differences were observed between cyclopoid abundances in treatments stocked with cyclopoids and the control, the proportion of large cladocerans clearly showed the effect of the manipulation. The similar trends in both of these treatments did not confirm the importance of cyclopoid predation in our experiment. The overall strong effect of fish over cyclopoid predation suggests the main role of fish predation in the forming of zooplankton communities and in turn impacting phytoplankton biomass in mesocosms. Article in Journal/Newspaper Copepods Rotifer The Czech Academy of Sciences: Publication Activity (ASEP) Annales de Limnologie - International Journal of Limnology 50 1 71 83 |
institution |
Open Polar |
collection |
The Czech Academy of Sciences: Publication Activity (ASEP) |
op_collection_id |
ftczacademyscien |
language |
English |
topic |
predation zooplankton perch roach mesocosms |
spellingShingle |
predation zooplankton perch roach mesocosms Šorf, M. Brandl, Z. Znachor, P. (Petr) Vašek, M. (Mojmír) Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
topic_facet |
predation zooplankton perch roach mesocosms |
description |
The impact of fish and cyclopoid copepod predation on zooplankton communities was evaluated using large-volume mesocosms (depth 9.5 m; volume 13 m3) in the Římov reservoir (Czech Republic). Two yearling roach and perch individuals introduced into mesocosms represented the fish treatment, which was compared to cyclopoid copepods (initial abundance of 2 ind.L−1) and a control with no initial addition of predators. Our results clearly support the hypothesis that planktivorous fish feeding leads to the suppression of large-bodied cladocerans. In the presence of fish, the cladoceran community changed from a dominance of large-bodied Daphnia spp. at the beginning to dominance by the smaller Bosmina longirostris at the end of the experiment. Chlorophyll-a concentration and rotifer abundances increased in the absence of daphnids. In the absence of fish, the presence of large-bodied cladocerans resulted in decreasing chlorophyll-a concentration. Although no significant differences were observed between cyclopoid abundances in treatments stocked with cyclopoids and the control, the proportion of large cladocerans clearly showed the effect of the manipulation. The similar trends in both of these treatments did not confirm the importance of cyclopoid predation in our experiment. The overall strong effect of fish over cyclopoid predation suggests the main role of fish predation in the forming of zooplankton communities and in turn impacting phytoplankton biomass in mesocosms. |
format |
Article in Journal/Newspaper |
author |
Šorf, M. Brandl, Z. Znachor, P. (Petr) Vašek, M. (Mojmír) |
author_facet |
Šorf, M. Brandl, Z. Znachor, P. (Petr) Vašek, M. (Mojmír) |
author_sort |
Šorf, M. |
title |
Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
title_short |
Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
title_full |
Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
title_fullStr |
Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
title_full_unstemmed |
Different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
title_sort |
different effects of planktonic invertebrate predators and fish on the plankton community in experimental mesocosms |
publishDate |
2014 |
url |
https://doi.org/10.1051/limn/2014001 http://hdl.handle.net/11104/0232561 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_relation |
doi:10.1051/limn/2014001 urn:pissn: 0003-4088 urn:eissn: 2100-000x http://hdl.handle.net/11104/0232561 |
op_doi |
https://doi.org/10.1051/limn/2014001 |
container_title |
Annales de Limnologie - International Journal of Limnology |
container_volume |
50 |
container_issue |
1 |
container_start_page |
71 |
op_container_end_page |
83 |
_version_ |
1789974374248349696 |