Daily variation of zooplankton abundance and evenness in the Rosana reservoir, Brazil: biotic and abiotic inferences
The zooplankton community presents stochastic temporal fluctuation and heterogeneous spatial variation determined by the relationships among the organisms and environmental conditions. We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, an...
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| Veröffentlicht in: | Iheringia. Série zoologia 2014-03, Vol.104 (1), p.21-31 |
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| creator | Takahashi, Erica M Lansac-Toha, Fabio A Dias, Juliana D Bonecker, Claudia C |
| description | The zooplankton community presents stochastic temporal fluctuation and heterogeneous spatial variation determined by the relationships among the organisms and environmental conditions. We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, and that the daily variation of most abundant species is related to environmental conditions, specifically the availability of resources. Zooplankton samples were collected daily at three sampling stations in a lateral arm of the Rosana Reservoir (SP/PR). The zooplankton did not present significant differences in abundance and evenness among sampling stations, but the temporal variation of these attributes was significant. Abiotic variables and algal resource availability have significantly explained the daily variation of the most abundant species (p |
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We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, and that the daily variation of most abundant species is related to environmental conditions, specifically the availability of resources. Zooplankton samples were collected daily at three sampling stations in a lateral arm of the Rosana Reservoir (SP/PR). The zooplankton did not present significant differences in abundance and evenness among sampling stations, but the temporal variation of these attributes was significant. Abiotic variables and algal resource availability have significantly explained the daily variation of the most abundant species (p<0.001), however, the species distribution makes inferences on biotic relationships between them. Thus, not only the food resource availability is influential on the abundance of principal zooplankton species, but rather a set of factors (abiotic variables and biotic relationships).Original Abstract: A comunidade zooplanctonica apresenta flutuacao temporal estocastica e variacao espacial heterogenea que sao determinadas pelas relacoes entre os organismos e condicoes ambientais. Acredita-se que a distribuicao temporal e espacial do zooplancton seja heterogenea e discreta, respectivamente; e que a variacao diaria das especies mais abundantes esta relacionada as condicoes ambientais, principalmente, disponibilidade de recursos. As amostras de zooplancton foram coletadas diariamente em tres estacoes de amostragem em um braco lateral do reservatorio de Rosana (SP/PR). O zooplancton nao apresentou diferencas significativas na abundancia e equitabilidade entre as estacoes de amostragem, no entanto, a variacao temporal desses atributos foi significativa. As variaveis abioticas e a disponibilidade de recurso algal explicou significativamente a variacao diaria das especies mais abundantes (p<0,001), entretanto, a distribuicao das especies faz inferencias sobre relacoes bioticas entre elas. Assim, nao so a disponibilidade de recurso alimentar e influente na abundancia das principais especies zooplanctonicas, mas sim um conjunto de fatores (variaveis abioticas e relacoes bioticas).</description><identifier>ISSN: 0073-4721</identifier><identifier>EISSN: 1678-4766</identifier><language>por</language><ispartof>Iheringia. 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We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, and that the daily variation of most abundant species is related to environmental conditions, specifically the availability of resources. Zooplankton samples were collected daily at three sampling stations in a lateral arm of the Rosana Reservoir (SP/PR). The zooplankton did not present significant differences in abundance and evenness among sampling stations, but the temporal variation of these attributes was significant. Abiotic variables and algal resource availability have significantly explained the daily variation of the most abundant species (p<0.001), however, the species distribution makes inferences on biotic relationships between them. Thus, not only the food resource availability is influential on the abundance of principal zooplankton species, but rather a set of factors (abiotic variables and biotic relationships).Original Abstract: A comunidade zooplanctonica apresenta flutuacao temporal estocastica e variacao espacial heterogenea que sao determinadas pelas relacoes entre os organismos e condicoes ambientais. Acredita-se que a distribuicao temporal e espacial do zooplancton seja heterogenea e discreta, respectivamente; e que a variacao diaria das especies mais abundantes esta relacionada as condicoes ambientais, principalmente, disponibilidade de recursos. As amostras de zooplancton foram coletadas diariamente em tres estacoes de amostragem em um braco lateral do reservatorio de Rosana (SP/PR). O zooplancton nao apresentou diferencas significativas na abundancia e equitabilidade entre as estacoes de amostragem, no entanto, a variacao temporal desses atributos foi significativa. As variaveis abioticas e a disponibilidade de recurso algal explicou significativamente a variacao diaria das especies mais abundantes (p<0,001), entretanto, a distribuicao das especies faz inferencias sobre relacoes bioticas entre elas. 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Série zoologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takahashi, Erica M</au><au>Lansac-Toha, Fabio A</au><au>Dias, Juliana D</au><au>Bonecker, Claudia C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Daily variation of zooplankton abundance and evenness in the Rosana reservoir, Brazil: biotic and abiotic inferences</atitle><jtitle>Iheringia. Série zoologia</jtitle><date>2014-03-31</date><risdate>2014</risdate><volume>104</volume><issue>1</issue><spage>21</spage><epage>31</epage><pages>21-31</pages><issn>0073-4721</issn><eissn>1678-4766</eissn><abstract>The zooplankton community presents stochastic temporal fluctuation and heterogeneous spatial variation determined by the relationships among the organisms and environmental conditions. We predicted that the temporal and spatial zooplankton distribution is heterogeneous and discrete, respectively, and that the daily variation of most abundant species is related to environmental conditions, specifically the availability of resources. Zooplankton samples were collected daily at three sampling stations in a lateral arm of the Rosana Reservoir (SP/PR). The zooplankton did not present significant differences in abundance and evenness among sampling stations, but the temporal variation of these attributes was significant. Abiotic variables and algal resource availability have significantly explained the daily variation of the most abundant species (p<0.001), however, the species distribution makes inferences on biotic relationships between them. Thus, not only the food resource availability is influential on the abundance of principal zooplankton species, but rather a set of factors (abiotic variables and biotic relationships).Original Abstract: A comunidade zooplanctonica apresenta flutuacao temporal estocastica e variacao espacial heterogenea que sao determinadas pelas relacoes entre os organismos e condicoes ambientais. Acredita-se que a distribuicao temporal e espacial do zooplancton seja heterogenea e discreta, respectivamente; e que a variacao diaria das especies mais abundantes esta relacionada as condicoes ambientais, principalmente, disponibilidade de recursos. As amostras de zooplancton foram coletadas diariamente em tres estacoes de amostragem em um braco lateral do reservatorio de Rosana (SP/PR). O zooplancton nao apresentou diferencas significativas na abundancia e equitabilidade entre as estacoes de amostragem, no entanto, a variacao temporal desses atributos foi significativa. As variaveis abioticas e a disponibilidade de recurso algal explicou significativamente a variacao diaria das especies mais abundantes (p<0,001), entretanto, a distribuicao das especies faz inferencias sobre relacoes bioticas entre elas. Assim, nao so a disponibilidade de recurso alimentar e influente na abundancia das principais especies zooplanctonicas, mas sim um conjunto de fatores (variaveis abioticas e relacoes bioticas).</abstract></addata></record> |
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| title | Daily variation of zooplankton abundance and evenness in the Rosana reservoir, Brazil: biotic and abiotic inferences |
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