Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables
Zooplankton is studied in the ancient, tectonic, oligomictic and oligotrophic Lake Ohrid (Macedonia, South Eastern Europe). The main aim of this study was to assess the seasonal and spatial patterns of the zooplankton functional feeding guilds in relation to the environmental conditions. Metalimnion...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2017-09-01
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| Series: | Croatian Journal of Fisheries |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/cjf-2017-0013 |
| _version_ | 1818720539085111296 |
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| author | Tasevska Orhideja Špoljar Maria Gušeska Dafina Kostoski Goce Patcheva Suzana Sarafiloska Elizabeta Veljanoska |
| author_facet | Tasevska Orhideja Špoljar Maria Gušeska Dafina Kostoski Goce Patcheva Suzana Sarafiloska Elizabeta Veljanoska |
| author_sort | Tasevska Orhideja |
| collection | DOAJ |
| description | Zooplankton is studied in the ancient, tectonic, oligomictic and oligotrophic Lake Ohrid (Macedonia, South Eastern Europe). The main aim of this study was to assess the seasonal and spatial patterns of the zooplankton functional feeding guilds in relation to the environmental conditions. Metalimnion of the lake was detected as the most productive environment, where biomass of the phytoplankton and abundance of the zooplankton reached their maxima. Pelagial zooplankton of low abundance (25 ± 22 ind. L−1) consisted of 16 species including two endemic copepods, Arctodiaptomus steindachneri (Richard, 1897) and Cyclops ochridanus (Kiefer, 1932). Copepods obtained remarkable share (60%) in the zooplankton assemblage. Microphagous zooplankton was mainly comprised of the most abundant rotifer Kellicottia longispina (Kellicott, 1879) in summer, and copepod nauplii during the spring Eudiaptomus gracilis (Sars, 1862) and C.ochridanus, and autumn C.ochridanus. Due to their requirements for the bacterio-detritus suspension, this microphagous zooplankton occupied aphotic hypolimnion during the entire study period. Raptorials were typically represented by copepodites and adult copepods in the metalimnion, and were significantly and positively affected by temperature (r = 0.417, p = 0.001), dissolved oxygen (r = 0.463, p = 0.0001) and, particularly, phytoplankton biomass (r = 0.708, p < 0.00001). This is the first study in which the link between the lower and higher trophic levels is investigated in Lake Ohrid. |
| first_indexed | 2024-12-17T20:24:26Z |
| format | Article |
| id | doaj.art-eb9344212a024b079609ced6e912a398 |
| institution | Directory Open Access Journal |
| issn | 1848-0586 |
| language | English |
| last_indexed | 2024-12-17T20:24:26Z |
| publishDate | 2017-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Croatian Journal of Fisheries |
| spelling | doaj.art-eb9344212a024b079609ced6e912a3982022-12-21T21:33:51ZengSciendoCroatian Journal of Fisheries1848-05862017-09-017539510310.1515/cjf-2017-0013cjf-2017-0013Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental VariablesTasevska Orhideja0Špoljar Maria1Gušeska Dafina2Kostoski Goce3Patcheva Suzana4Sarafiloska Elizabeta Veljanoska5Department of Zooplankton, Hydrobiological Institute, Naum Ohridski 50, 6000Ohrid, Macedonia (the former Yugoslav Republic of)Department of Biology, Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000Zagreb, CroatiaDepartment of Zooplankton, Hydrobiological Institute, Naum Ohridski 50, 6000Ohrid, Macedonia (the former Yugoslav Republic of)Department of Zooplankton, Hydrobiological Institute, Naum Ohridski 50, 6000Ohrid, Macedonia (the former Yugoslav Republic of)Deptartment of Phytoplankton, Hydrobiological Institute, Naum Ohridski 50, 6000Ohrid, Macedonia (the former Yugoslav Republic of)Department of Physical and Chemical Research of Water, Hydrobiological Institute, Naum Ohridski 50, 6000Ohrid, Macedonia (the former Yugoslav Republic of)Zooplankton is studied in the ancient, tectonic, oligomictic and oligotrophic Lake Ohrid (Macedonia, South Eastern Europe). The main aim of this study was to assess the seasonal and spatial patterns of the zooplankton functional feeding guilds in relation to the environmental conditions. Metalimnion of the lake was detected as the most productive environment, where biomass of the phytoplankton and abundance of the zooplankton reached their maxima. Pelagial zooplankton of low abundance (25 ± 22 ind. L−1) consisted of 16 species including two endemic copepods, Arctodiaptomus steindachneri (Richard, 1897) and Cyclops ochridanus (Kiefer, 1932). Copepods obtained remarkable share (60%) in the zooplankton assemblage. Microphagous zooplankton was mainly comprised of the most abundant rotifer Kellicottia longispina (Kellicott, 1879) in summer, and copepod nauplii during the spring Eudiaptomus gracilis (Sars, 1862) and C.ochridanus, and autumn C.ochridanus. Due to their requirements for the bacterio-detritus suspension, this microphagous zooplankton occupied aphotic hypolimnion during the entire study period. Raptorials were typically represented by copepodites and adult copepods in the metalimnion, and were significantly and positively affected by temperature (r = 0.417, p = 0.001), dissolved oxygen (r = 0.463, p = 0.0001) and, particularly, phytoplankton biomass (r = 0.708, p < 0.00001). This is the first study in which the link between the lower and higher trophic levels is investigated in Lake Ohrid.https://doi.org/10.1515/cjf-2017-0013copepodsrotifersmicrophgousraptorialsmetalimnion oligomictic lake |
| spellingShingle | Tasevska Orhideja Špoljar Maria Gušeska Dafina Kostoski Goce Patcheva Suzana Sarafiloska Elizabeta Veljanoska Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables Croatian Journal of Fisheries copepods rotifers microphgous raptorials metalimnion oligomictic lake |
| title | Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables |
| title_full | Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables |
| title_fullStr | Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables |
| title_full_unstemmed | Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables |
| title_short | Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables |
| title_sort | zooplankton in ancient and oligotrophic lake ohrid europe in association with environmental variables |
| topic | copepods rotifers microphgous raptorials metalimnion oligomictic lake |
| url | https://doi.org/10.1515/cjf-2017-0013 |
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