Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Factors influencing species richness in lacustrine zooplankton |
| Abstract | Frequent dispersal events are expected to elevate local species richness in island-like habitats such as lakes. However, the importance of dispersal can be hard to evaluate if other factors cause large background variability in species composition and richness. In this paper, we review empirical studies on ecological factors known or expected to influence species richness in zooplankton communities of inland lakes. We then present summaries of two recent case studies. Our objectives are twofold: we first look for effects of biotic interactions on species richness and species composition, and then evaluate whether the expected effects of dispersal are likely to be detected on a background of large variability caused by other ecological factors and interactions. Species richness within lakes appears to be primarily controlled by factors related to lake size, lake productivity, water quality, and fish predation levels. One case study indicated a slight, but significant, positive effect of lake density and lake area in the surrounding landscape on species richness, suggesting that frequent dispersal events may enhance species richness. This local variation in species richness is superimposed on regional variation in species pools. |
| Source | Acta oecologica (Montrouge) 23, pp. 155–163 |
| Keywords | Biodiversity; Community ecologySpecies richnessDispersalPredationZooplanktonCrustaceaCladoceraFreshwater |
| Journal | Acta oecologica (Montrouge) |
| Editor | Elsevier, Paris, Francia |
| Year | 2002 |
| Type | Articolo in rivista |
| Authors | Hobæk A., Manca M., Andersen T. |
| Text | 52802 2002 Biodiversity; Community ecology Species richness Dispersal Predation Zooplankton Crustacea Cladocera Freshwater Factors influencing species richness in lacustrine zooplankton Hobæk A., Manca M., Andersen T. Anders Hobæk Norwegian Institute for Water Research, Bergen, Norway Marina Manca CNR Istituto Italiano di Idrobiologia, Verbania Pallanza, Italy Tom Andersen Norwegian Institute for Water Research, Oslo, Norway Frequent dispersal events are expected to elevate local species richness in island like habitats such as lakes. However, the importance of dispersal can be hard to evaluate if other factors cause large background variability in species composition and richness. In this paper, we review empirical studies on ecological factors known or expected to influence species richness in zooplankton communities of inland lakes. We then present summaries of two recent case studies. Our objectives are twofold we first look for effects of biotic interactions on species richness and species composition, and then evaluate whether the expected effects of dispersal are likely to be detected on a background of large variability caused by other ecological factors and interactions. Species richness within lakes appears to be primarily controlled by factors related to lake size, lake productivity, water quality, and fish predation levels. One case study indicated a slight, but significant, positive effect of lake density and lake area in the surrounding landscape on species richness, suggesting that frequent dispersal events may enhance species richness. This local variation in species richness is superimposed on regional variation in species pools. 23 Published version Impact factor 0.979 Acta Oecologica 23 155 163 Acta_Oecologica_23_155_163.pdf Articolo in rivista Elsevier 1146 609X Acta oecologica Montrouge Acta oecologica Montrouge Acta oecol. Montrouge Acta oecologica. Montrouge marinamarcella.manca MANCA MARINA MARCELLA |