Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | The 'rotiferologist' effect and other global correlates of species richness in monogonont rotifers |
| Abstract | Global biodiversity patterns are often driven by different environmental variables at different scales. However, it is still controversial whether there are general trends, whether similar processes are responsible for similar patterns, and/or whether confounding effects such as sampling bias can produce misleading results. Our aim is twofold: 1) assessing the global correlates of diversity in a group of microscopic animals little analysed so far, and 2) inferring the influence of sampling intensity on biodiversity analyses. As a case study, we choose rotifers, because of their high potential for dispersal across the globe. We assembled and analysed a new worldwide dataset of records of monogonont rotifers, a group of microscopic aquatic animals, from 1960 to 1992. Using spatially explicit models, we assessed whether the diversity patterns conformed to those commonly obtained for larger organisms, and whether they still held true after controlling for sampling intensity, variations in area, and spatial structure in the data. Our results are in part analogous to those commonly obtained for macroorganisms (habitat heterogeneity and precipitation emerge as the main global correlates), but show some divergence (potential absence of a latitudinal gradient and of a large-scale correlation with human population). Moreover, the effect of sampling effort is remarkable, accounting for >50% of the variability; this strong effect may mask other patterns such as latitudinal gradients. Our study points out that sampling bias should be carefully considered when drawing conclusions from large-scale analyses, and calls for further faunistic work on microorganisms in all regions of the world to better understand the generality of the processes driving global patterns in biodiversity. |
| Source | Ecography (Cop.) 35 (2), pp. 174–182 |
| Keywords | RotiferaMacroecology |
| Journal | Ecography (Cop.) |
| Editor | Blackwell, Oxford, Regno Unito |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1111/j.1600-0587.2011.06850.x |
| Authors | Diego Fontaneto; Ana Marcia Barbosa; Hendrik Segers; Marco Pautasso |
| Text | 281577 2012 10.1111/j.1600 0587.2011.06850.x ISI Web of Science WOS 000299413000009 Rotifera Macroecology The rotiferologist effect and other global correlates of species richness in monogonont rotifers Diego Fontaneto; Ana Marcia Barbosa; Hendrik Segers; Marco Pautasso Imperial College London; Swedish Museum Nat Hist; University of Evora; Royal Belgian Inst Nat Sci Global biodiversity patterns are often driven by different environmental variables at different scales. However, it is still controversial whether there are general trends, whether similar processes are responsible for similar patterns, and/or whether confounding effects such as sampling bias can produce misleading results. Our aim is twofold 1 assessing the global correlates of diversity in a group of microscopic animals little analysed so far, and 2 inferring the influence of sampling intensity on biodiversity analyses. As a case study, we choose rotifers, because of their high potential for dispersal across the globe. We assembled and analysed a new worldwide dataset of records of monogonont rotifers, a group of microscopic aquatic animals, from 1960 to 1992. Using spatially explicit models, we assessed whether the diversity patterns conformed to those commonly obtained for larger organisms, and whether they still held true after controlling for sampling intensity, variations in area, and spatial structure in the data. Our results are in part analogous to those commonly obtained for macroorganisms habitat heterogeneity and precipitation emerge as the main global correlates , but show some divergence potential absence of a latitudinal gradient and of a large scale correlation with human population . Moreover, the effect of sampling effort is remarkable, accounting for >50% of the variability; this strong effect may mask other patterns such as latitudinal gradients. Our study points out that sampling bias should be carefully considered when drawing conclusions from large scale analyses, and calls for further faunistic work on microorganisms in all regions of the world to better understand the generality of the processes driving global patterns in biodiversity. 35 Published version Articolo 2012_Ecography_35_174_182.pdf Articolo in rivista Blackwell 0906 7590 Ecography Cop. Ecography Cop. Ecography Cop. Ecography. Cop. diego.fontaneto FONTANETO DIEGO TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |