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How pollen organic matter enters freshwater food webs

Masclaux, Hélène ; Perga, Marie-Elodie ; Kagami, Maiko ; Desvilettes, Christian ; Bourdier, Gilles ; Bec, Alexandre

Limnology and oceanography, 2013-07, Vol.58 (4), p.1185-1195 [Periódico revisado por pares]

Waco, TX: John Wiley and Sons, Inc

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Título:
How pollen organic matter enters freshwater food webs
Autor: Masclaux, Hélène ; Perga, Marie-Elodie ; Kagami, Maiko ; Desvilettes, Christian ; Bourdier, Gilles ; Bec, Alexandre
Assuntos: Animal and plant ecology ; Animal, plant and microbial ecology ; Biodiversity and Ecology ; Biological and medical sciences ; Environmental Sciences ; Fresh water ecosystems ; Fundamental and applied biological sciences. Psychology ; General aspects ; Synecology
É parte de: Limnology and oceanography, 2013-07, Vol.58 (4), p.1185-1195
Descrição: Huge amounts of pollen can accumulate at the air–water interface during the floral bloom of wind-pollinated trees. We hypothesized that such pollen rains act as subsidy pulses, promoting the development of a neustonic microbial food web and the transfer of pollen organic carbon to aquatic consumers. During a pine pollen rain event on an oxbow lake, microorganism concentrations were by far higher in the neuston, where pollen grains accumulated, than in the seston. Zooplankton species were also unevenly distributed in the two compartments. Bulk isotope and isotopes of fatty acid analyses revealed trophic partitioning among these zooplankton species, with some of the taxa foraging specifically on neuston, where they benefit from pollen-derived carbon. Microorganisms were identified as a key element in the trophic upgrading of pollen food quality and in the transfer of pollen carbon to metazoan consumers. Pollen rains may thus contribute, as an allochthonous food pulse, to aquatic production at specific seasons, but they may also act as a structuring factor in lake habitats.
Editor: Waco, TX: John Wiley and Sons, Inc
Idioma: Inglês

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How pollen organic matter enters freshwater food webs

Masclaux, Hélène ; Perga, Marie-Elodie ; Kagami, Maiko ; Desvilettes, Christian ; Bourdier, Gilles ; Bec, Alexandre

Waco, TX: John Wiley and Sons, Inc

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