Biogeographical Patterns of Species Richness and Abundance Distribution in Stream Diatoms Are Driven by Climate and Water Chemistry
| Autor: | Janne Soininen, Sophia I. Passy, Aurélien Jamoneau, Chad A. Larson, Juliette Tison-Rosebery, Thibault Leboucher, Jani Heino, William R. Budnick |
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| Přispěvatelé: | Department of Geosciences and Geography, University of Texas at Arlington [Arlington], Ecosystèmes aquatiques et changements globaux (UR EABX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Finnish Environment Institute (SYKE), Department of Geosciences and Geography [Helsinki], Falculty of Science [Helsinki], University of Helsinki-University of Helsinki |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
energy variability hypothesis Climate Biodiversity DIVERSITY 01 natural sciences LATITUDINAL GRADIENTS latitudinal diversity gradient Abundance (ecology) population dynamics TEMPERATURE SCALE GLOBAL PATTERNS biology Geography PRODUCTIVITY Ecology Altitude DIATOMEE METABOLISME Species evenness DYNAMIQUE DE POPULATION Seasons 1171 Geosciences climatic variability METABOLIC THEORY Biogeography ENERGY THEORY 010603 evolutionary biology Rivers Ecology Evolution Behavior and Systematics Relative abundance distribution Ecosystem Diatoms species-energy theory 010604 marine biology & hydrobiology AVAILABILITY 15. Life on land biology.organism_classification diatom Diatom 13. Climate action Spatial ecology ta1181 BIODIVERSITY Species richness VARIABILITE CLIMATIQUE species abundance distribution [SDE.BE]Environmental Sciences/Biodiversity and Ecology metabolism climatic tolerance hypothesis |
| Zdroj: | American Naturalist American Naturalist, University of Chicago Press, 2018, 192 (5), pp.605-617. ⟨10.1086/699830⟩ |
| ISSN: | 0003-0147 1537-5323 |
| Popis: | In this intercontinental study of stream diatoms, we asked three important but still unresolved ecological questions: (1) What factors drive the biogeography of species richness and species abundance distribution (SAD)? (2) Are climate-related hypotheses, which have dominated the research on the latitudinal and altitudinal diversity gradients, adequate in explaining spatial biotic variability? and (3) Is the SAD response to the environment independent of richness? We tested a number of climatic theories and hypotheses (i.e., the species-energy theory, the metabolic theory, the energy variability hypothesis, and the climatic tolerance hypothesis) but found no support for any of these concepts, as the relationships of richness with explanatory variables were nonexistent, weak, or unexpected. Instead, we demonstrated that diatom richness and SAD evenness generally increased with temperature seasonality and at mid- to high total phosphorus concentrations. The spatial patterns of diatom richness and the SADmainly longitudinal in the United States but latitudinal in Finlandwere defined primarily by the covariance of climate and water chemistry with space. The SAD was not entirely controlled by richness, emphasizing its utility for ecological research. Thus, we found support for the operation of both climate and water chemistry mechanisms in structuring diatom communities, which underscores their complex response to the environment and the necessity for novel predictive frameworks. |
| Databáze: | OpenAIRE |
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