Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle
The aim of this study is to analyze the annual zooplankton succession at a coastal station in Patagonia (Argentina), with special emphasis on copepods and their potential preys, using solar radiation and temperature as environmental factors. The annual plankton cycle exhibited autumn/winter and spri...
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2016
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01853880_v42_n1_p31_Spinelli http://hdl.handle.net/20.500.12110/paper_01853880_v42_n1_p31_Spinelli |
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paper:paper_01853880_v42_n1_p31_Spinelli |
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paper:paper_01853880_v42_n1_p31_Spinelli2023-06-08T15:19:36Z Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle Argentinean sea Harpacticoid copepods Phytoplankton Zooplankton annual cycle coastal water phytoplankton species diversity succession zooplankton Argentina Atlantic Coast [South America] Patagonia Bacillariophyta Calanoides carinatus Copepoda Euterpina acutifrons Harpacticoida Mastigophora (flagellates) Paracalanus parvus The aim of this study is to analyze the annual zooplankton succession at a coastal station in Patagonia (Argentina), with special emphasis on copepods and their potential preys, using solar radiation and temperature as environmental factors. The annual plankton cycle exhibited autumn/winter and spring/summer phases. During the autumn/winter phase, low temperature and radiation were correlated with higher diatom abundance and copepod diversity. This period was characterized by a dominant classical herbivorous food web in which the large copepod Calanoides carinatus dominated the community. On the contrary, during the spring/summer period, with high radiation and temperature levels, flagellates were the dominant food available for zooplankton and correlated with smaller species of copepods such as the harpacticoid Euterpina acutifrons. Also, intensive reproduction of the small copepods E. acutifrons and Paracalanus parvus occurred mainly in summer. On the other hand, high species diversity was found in winter when the ultraviolet radiation was low. The temporal pattern of the copepods observed in our study was explained by food availability and environmental factors (temperature and solar radiation), although other factors such as predator abundance may also be important in modulating the community. Our results show the importance of copepod abundance dynamics and highlights their key role in the pelagic food web in northern Patagonian coastal waters. © 2016 Universidad Autonoma de Baja California. All rights reserved. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01853880_v42_n1_p31_Spinelli http://hdl.handle.net/20.500.12110/paper_01853880_v42_n1_p31_Spinelli |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentinean sea Harpacticoid copepods Phytoplankton Zooplankton annual cycle coastal water phytoplankton species diversity succession zooplankton Argentina Atlantic Coast [South America] Patagonia Bacillariophyta Calanoides carinatus Copepoda Euterpina acutifrons Harpacticoida Mastigophora (flagellates) Paracalanus parvus |
| spellingShingle |
Argentinean sea Harpacticoid copepods Phytoplankton Zooplankton annual cycle coastal water phytoplankton species diversity succession zooplankton Argentina Atlantic Coast [South America] Patagonia Bacillariophyta Calanoides carinatus Copepoda Euterpina acutifrons Harpacticoida Mastigophora (flagellates) Paracalanus parvus Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| topic_facet |
Argentinean sea Harpacticoid copepods Phytoplankton Zooplankton annual cycle coastal water phytoplankton species diversity succession zooplankton Argentina Atlantic Coast [South America] Patagonia Bacillariophyta Calanoides carinatus Copepoda Euterpina acutifrons Harpacticoida Mastigophora (flagellates) Paracalanus parvus |
| description |
The aim of this study is to analyze the annual zooplankton succession at a coastal station in Patagonia (Argentina), with special emphasis on copepods and their potential preys, using solar radiation and temperature as environmental factors. The annual plankton cycle exhibited autumn/winter and spring/summer phases. During the autumn/winter phase, low temperature and radiation were correlated with higher diatom abundance and copepod diversity. This period was characterized by a dominant classical herbivorous food web in which the large copepod Calanoides carinatus dominated the community. On the contrary, during the spring/summer period, with high radiation and temperature levels, flagellates were the dominant food available for zooplankton and correlated with smaller species of copepods such as the harpacticoid Euterpina acutifrons. Also, intensive reproduction of the small copepods E. acutifrons and Paracalanus parvus occurred mainly in summer. On the other hand, high species diversity was found in winter when the ultraviolet radiation was low. The temporal pattern of the copepods observed in our study was explained by food availability and environmental factors (temperature and solar radiation), although other factors such as predator abundance may also be important in modulating the community. Our results show the importance of copepod abundance dynamics and highlights their key role in the pelagic food web in northern Patagonian coastal waters. © 2016 Universidad Autonoma de Baja California. All rights reserved. |
| title |
Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| title_short |
Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| title_full |
Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| title_fullStr |
Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| title_full_unstemmed |
Diversity of copepods in Atlantic patagonian coastal waters throughout an annual cycle |
| title_sort |
diversity of copepods in atlantic patagonian coastal waters throughout an annual cycle |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01853880_v42_n1_p31_Spinelli http://hdl.handle.net/20.500.12110/paper_01853880_v42_n1_p31_Spinelli |
| _version_ |
1768542835176374272 |