Zooplankton Seasonal Abundance of South AmericanSaline Shallow Lakes
The central provinces of Argentina are characterized by the presence of a high number of shallow lakes, located in endorheic basins, many of which have elevated salinities as well as eutrophic or hypereutrophic condition. The zooplankton of four saline shallow lakes of the province of La Pampa was s...
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| Veröffentlicht in: | International review of hydrobiology. 2006-02, Vol.91 (1), p.86-100 |
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| creator | Echaniz, Santiago Andrés Vignatti, Alicia María De Paggi, Susana José Paggi, Juan César Pilati, Alberto |
| description | The central provinces of Argentina are characterized by the presence of a high number of shallow lakes, located in endorheic basins, many of which have elevated salinities as well as eutrophic or hypereutrophic condition. The zooplankton of four saline shallow lakes of the province of La Pampa was studied on a monthly basis during a 2‐year period to determine its temporal and spatial variation.
The surface of these shallow lakes ( |
| doi_str_mv | 10.1002/iroh.200510803 |
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The surface of these shallow lakes (<2.5 m depth) varied between 56.8 and 215.9 ha, and some have from 8.4 to 20.8 g · l–1. The more saline lakes have “clear” water and the less saline lakes “turbid” water. Fishes, Jenynsia multidentata , were present in only two lakes during the last two months of the studied period.
The zooplankton was composed of 17 taxa of Rotifera, 5 taxa of Cladocera and 4 taxa of Copepoda. The low diversity and the faunistic composition are characteristic of saline environments. Although the studied lakes share 38% of the species, the faunistic similarity was higher between the two least saline lakes. The lowest diversity was found in the two most saline lakes.
All four shallow lakes were characterized by their very high zooplankton density, especially in the least saline lakes (<80000 ind · l–1). The abundance is significantly correlated with the water transparency but not with salinity.
The zooplankton temporal variation was characterized by the alternation of macro‐ and microzooplankton, probably regulated by competition and intrazooplanktonic predation. In each lake, the spatial abundance distribution of the macro‐ and microzooplankton was homogeneous. It was related to the shallow depht of the lakes and their polymictic condition.
The Scheffer model on alternative states in shallow lakes acknowledges that it cannot be applied to saline lakes because Daphnia , the main responsible for the clear water state, is not tolerant to high salinity. Our study shows that the most saline lakes, where the halophylic Daphnia menucoensis is abundant, have also the most clear waters. Another difference that we found with regards to the mentioned model is that, in turbid lakes, it could not have had a top‐down control on macrozooplankton exerted by fishes because in these lakes fishes were practically absent. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</description><identifier>ISSN: 1434-2944</identifier><identifier>EISSN: 1522-2632</identifier><identifier>DOI: 10.1002/iroh.200510803</identifier><language>eng</language><publisher>Berlin: WILEY-VCH Verlag</publisher><subject>Brackish ; Cladocera ; Copepoda ; Daphnia menucoensis ; eutrophic lakes ; Jenynsia multidentata ; Rotifera ; saline shallow lakes ; zooplankton temporal variation</subject><ispartof>International review of hydrobiology., 2006-02, Vol.91 (1), p.86-100</ispartof><rights>Copyright © 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2033-930805fc531de7dfd54b618d3a79735a9145e5476b95aa1d1cea6d3cf0e538953</citedby><cites>FETCH-LOGICAL-c2033-930805fc531de7dfd54b618d3a79735a9145e5476b95aa1d1cea6d3cf0e538953</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Firoh.200510803$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45551</link.rule.ids></links><search><creatorcontrib>Echaniz, Santiago Andrés</creatorcontrib><creatorcontrib>Vignatti, Alicia María</creatorcontrib><creatorcontrib>De Paggi, Susana José</creatorcontrib><creatorcontrib>Paggi, Juan César</creatorcontrib><creatorcontrib>Pilati, Alberto</creatorcontrib><title>Zooplankton Seasonal Abundance of South AmericanSaline Shallow Lakes</title><title>International review of hydrobiology.</title><addtitle>International Review of Hydrobiology</addtitle><description>The central provinces of Argentina are characterized by the presence of a high number of shallow lakes, located in endorheic basins, many of which have elevated salinities as well as eutrophic or hypereutrophic condition. The zooplankton of four saline shallow lakes of the province of La Pampa was studied on a monthly basis during a 2‐year period to determine its temporal and spatial variation.
The surface of these shallow lakes (<2.5 m depth) varied between 56.8 and 215.9 ha, and some have from 8.4 to 20.8 g · l–1. The more saline lakes have “clear” water and the less saline lakes “turbid” water. Fishes, Jenynsia multidentata , were present in only two lakes during the last two months of the studied period.
The zooplankton was composed of 17 taxa of Rotifera, 5 taxa of Cladocera and 4 taxa of Copepoda. The low diversity and the faunistic composition are characteristic of saline environments. Although the studied lakes share 38% of the species, the faunistic similarity was higher between the two least saline lakes. The lowest diversity was found in the two most saline lakes.
All four shallow lakes were characterized by their very high zooplankton density, especially in the least saline lakes (<80000 ind · l–1). The abundance is significantly correlated with the water transparency but not with salinity.
The zooplankton temporal variation was characterized by the alternation of macro‐ and microzooplankton, probably regulated by competition and intrazooplanktonic predation. In each lake, the spatial abundance distribution of the macro‐ and microzooplankton was homogeneous. It was related to the shallow depht of the lakes and their polymictic condition.
The Scheffer model on alternative states in shallow lakes acknowledges that it cannot be applied to saline lakes because Daphnia , the main responsible for the clear water state, is not tolerant to high salinity. Our study shows that the most saline lakes, where the halophylic Daphnia menucoensis is abundant, have also the most clear waters. Another difference that we found with regards to the mentioned model is that, in turbid lakes, it could not have had a top‐down control on macrozooplankton exerted by fishes because in these lakes fishes were practically absent. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</description><subject>Brackish</subject><subject>Cladocera</subject><subject>Copepoda</subject><subject>Daphnia menucoensis</subject><subject>eutrophic lakes</subject><subject>Jenynsia multidentata</subject><subject>Rotifera</subject><subject>saline shallow lakes</subject><subject>zooplankton temporal variation</subject><issn>1434-2944</issn><issn>1522-2632</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkMFPwjAUhxujiYhePe_kbdj2rRs9IioQiESnMfHSPLouTMaK7Rbkv3cEQ7x5eu_w-9775SPkmtEeo5TfFs4ue5xSwWifwgnpMMF5yGPgp-0eQRRyGUXn5ML7T0qplDzukPsPazclVqvaVkFq0NsKy2CwaKoMK20CmwepbeplMFgbV2isUiyLygTpEsvSboMZroy_JGc5lt5c_c4ueXt8eB2Ow9l8NBkOZqHmFCCU0BYTuRbAMpNkeSaiRcz6GWAiExAoWSSMiJJ4IQUiy5g2GGegc2oE9KWALrk53N04-9UYX6t14bUp2_7GNl61XyhIydpg7xDUznrvTK42rlij2ylG1V6W2stSR1ktIA_AtijN7p-0mrzMx3_Z8MAWvjbfRxbdSsUJJEK9P40UTxOY0uepuoMfpxt8wg</recordid><startdate>200602</startdate><enddate>200602</enddate><creator>Echaniz, Santiago Andrés</creator><creator>Vignatti, Alicia María</creator><creator>De Paggi, Susana José</creator><creator>Paggi, Juan César</creator><creator>Pilati, Alberto</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>200602</creationdate><title>Zooplankton Seasonal Abundance of South AmericanSaline Shallow Lakes</title><author>Echaniz, Santiago Andrés ; Vignatti, Alicia María ; De Paggi, Susana José ; Paggi, Juan César ; Pilati, Alberto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2033-930805fc531de7dfd54b618d3a79735a9145e5476b95aa1d1cea6d3cf0e538953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Brackish</topic><topic>Cladocera</topic><topic>Copepoda</topic><topic>Daphnia menucoensis</topic><topic>eutrophic lakes</topic><topic>Jenynsia multidentata</topic><topic>Rotifera</topic><topic>saline shallow lakes</topic><topic>zooplankton temporal variation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Echaniz, Santiago Andrés</creatorcontrib><creatorcontrib>Vignatti, Alicia María</creatorcontrib><creatorcontrib>De Paggi, Susana José</creatorcontrib><creatorcontrib>Paggi, Juan César</creatorcontrib><creatorcontrib>Pilati, Alberto</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>International review of hydrobiology.</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Echaniz, Santiago Andrés</au><au>Vignatti, Alicia María</au><au>De Paggi, Susana José</au><au>Paggi, Juan César</au><au>Pilati, Alberto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Zooplankton Seasonal Abundance of South AmericanSaline Shallow Lakes</atitle><jtitle>International review of hydrobiology.</jtitle><addtitle>International Review of Hydrobiology</addtitle><date>2006-02</date><risdate>2006</risdate><volume>91</volume><issue>1</issue><spage>86</spage><epage>100</epage><pages>86-100</pages><issn>1434-2944</issn><eissn>1522-2632</eissn><abstract>The central provinces of Argentina are characterized by the presence of a high number of shallow lakes, located in endorheic basins, many of which have elevated salinities as well as eutrophic or hypereutrophic condition. The zooplankton of four saline shallow lakes of the province of La Pampa was studied on a monthly basis during a 2‐year period to determine its temporal and spatial variation.
The surface of these shallow lakes (<2.5 m depth) varied between 56.8 and 215.9 ha, and some have from 8.4 to 20.8 g · l–1. The more saline lakes have “clear” water and the less saline lakes “turbid” water. Fishes, Jenynsia multidentata , were present in only two lakes during the last two months of the studied period.
The zooplankton was composed of 17 taxa of Rotifera, 5 taxa of Cladocera and 4 taxa of Copepoda. The low diversity and the faunistic composition are characteristic of saline environments. Although the studied lakes share 38% of the species, the faunistic similarity was higher between the two least saline lakes. The lowest diversity was found in the two most saline lakes.
All four shallow lakes were characterized by their very high zooplankton density, especially in the least saline lakes (<80000 ind · l–1). The abundance is significantly correlated with the water transparency but not with salinity.
The zooplankton temporal variation was characterized by the alternation of macro‐ and microzooplankton, probably regulated by competition and intrazooplanktonic predation. In each lake, the spatial abundance distribution of the macro‐ and microzooplankton was homogeneous. It was related to the shallow depht of the lakes and their polymictic condition.
The Scheffer model on alternative states in shallow lakes acknowledges that it cannot be applied to saline lakes because Daphnia , the main responsible for the clear water state, is not tolerant to high salinity. Our study shows that the most saline lakes, where the halophylic Daphnia menucoensis is abundant, have also the most clear waters. Another difference that we found with regards to the mentioned model is that, in turbid lakes, it could not have had a top‐down control on macrozooplankton exerted by fishes because in these lakes fishes were practically absent. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/iroh.200510803</doi><tpages>15</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Brackish Cladocera Copepoda Daphnia menucoensis eutrophic lakes Jenynsia multidentata Rotifera saline shallow lakes zooplankton temporal variation |
| title | Zooplankton Seasonal Abundance of South AmericanSaline Shallow Lakes |
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