論文

査読有り
2019年1月

Trophic niche breadth of pond zooplankton species using stable isotope analysis and the relationship with the abiotic and biotic factors

Royal Society Open Science
  • Hideyuki Doi
  • ,
  • Kwang-Hyeon Chang
  • ,
  • Shin-ichi Nakano

6
1
開始ページ
180917
終了ページ
180917
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1098/rsos.180917
出版者・発行元
The Royal Society

Zooplankton species have different feeding habits, but the diversity of their food resources and the factors governing them are still largely unknown. We here estimated the differences in the trophic niche breadths of dominant zooplankton species in ponds, using stable isotopes. To understand the differences in trophic niches of different zooplankton species, we measured the carbon and nitrogen stable isotope ratios and calculated the nearest-neighbour distance (NND), and standard deviation of NND (SDNND) of the bi-plot space of stable carbon and nitrogen isotopes in pond zooplankton. We tested the relationship between the NND/SDNND and environmental factors, as well as the zooplankton biomass, using generalized linear models (GLMs). For cladocerans, including
<italic>Bosmina, Ceriodaphnia</italic>
and
<italic>Daphnia,</italic>
the NNDs were significantly correlated with the biomass, pond morphology (volume and depth), total phosphorous (TP) and fish presence. For copepod species, including
<italic>Eodiaptomus</italic>
and cyclopoids, NNDs were significantly correlated with pond morphology, TP and fish presence, but not with biomass. In GLMs of SDNND, significant correlated factors were less than those for NND, and for some species, pond morphology and TP were significantly correlated with SDNND. Here, we found that the NND and SDNND of zooplankton species were related to various factors, including their biomass, predator presence, pond size and water quality. For cladocerans, biomass may be supported by trophic niche breadth, probably because of the consequences of resource competition. Also, predation and ecosystem size may influence trophic niche breadth due to changes in zooplankton behaviours.

リンク情報
DOI
https://doi.org/10.1098/rsos.180917
URL
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180917
URL
https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.180917
ID情報
  • DOI : 10.1098/rsos.180917
  • eISSN : 2054-5703

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