Biogeographical Patterns of Species Richness and Abundance Distribution in Stream Diatoms Are Driven by Climate and Water Chemistry

Show full item record



Permalink

http://hdl.handle.net/10138/305536

Citation

Passy , S I , Larson , C A , Jamoneau , A , Budnick , W , Heino , J , Leboucher , T , Tison-Rosebery , J & Soininen , J 2018 , ' Biogeographical Patterns of Species Richness and Abundance Distribution in Stream Diatoms Are Driven by Climate and Water Chemistry ' , American Naturalist , vol. 192 , no. 5 , pp. 605-617 . https://doi.org/10.1086/699830

Title: Biogeographical Patterns of Species Richness and Abundance Distribution in Stream Diatoms Are Driven by Climate and Water Chemistry
Author: Passy, Sophia I.; Larson, Chad A.; Jamoneau, Aurelien; Budnick, William; Heino, Jani; Leboucher, Thibault; Tison-Rosebery, Juliette; Soininen, Janne
Contributor: University of Helsinki, Department of Geosciences and Geography
Date: 2018-11
Language: eng
Number of pages: 13
Belongs to series: American Naturalist
ISSN: 0003-0147
URI: http://hdl.handle.net/10138/305536
Abstract: 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.
Subject: climatic tolerance hypothesis
energy variability hypothesis
latitudinal diversity gradient
metabolic theory
species abundance distribution
species-energy theory
LATITUDINAL GRADIENTS
METABOLIC THEORY
ENERGY THEORY
GLOBAL PATTERNS
SCALE
DIVERSITY
TEMPERATURE
BIODIVERSITY
AVAILABILITY
PRODUCTIVITY
1171 Geosciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
699830.pdf 2.376Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record