This hypothesis is consistent with global-scale diversity trends and climate-richness relationships documented for plants and other groups of organisms (e.g., [107], [108]).
The aim of this study was to discover how forest productivity is determined by tree species richness, climate and forest structure, i.e., tree size heterogeneity.
Forest ecosystem modifications perpetrated profound negative impacts on sustainable food production, freshwater availability, species diversity and richness, climate, and human well-being (Overmars and Verburg 2005 and Potter et al. 2007).
The north south typology of the arid climate affects the richness and the taxonomic and functional diversity of nematodes, while the west east temperature typology mainly affects the abundance of nematodes, especially of colonizing species.
A residual analysis in which the effect of elevation (a proxy for climate) on species richness and its potential determinants was removed confirmed the importance of the availability of trophic energy (NPP) for bird diversity patterns.
Each variable was tested on its own while other variables were set to the mean Fig. 4 Effects of location (a), climate (b), tree species richness and tree size heterogeneity (c), and stand density and tree size (d) on stand productivity of US inventory plots.
Each variable was tested on its own while other variables were set to the mean Fig. 2 Effects of location (a), climate (b), tree species richness and tree size heterogeneity (c), and stand density and tree size (d) on stand productivity of German inventory plots.
This study addresses the question of how climate change could affect species richness in New Caledonia, the world's smallest biodiversity hotspot.
A regression analysis was performed, treating MPB biomass as the dependent variable with the climate variables and macrofaunal species richness as independent variables.
We do not discount the importance of other factors known to influence the relationship between heterogeneity and plant species richness, such as climate, geology, and natural disturbances (e.g., fire regime and hydrologic cycles) which were not evaluated in our study.
General and peak ripe fruiting patterns were non-seasonal in the savanna and broad-leaved meadow and related to the dominance of herbaceous species with prolonged ripe fruiting times, low climate seasonality, high plant species richness and diversity, and dispersal syndromes.
