1997. A structural equation model of plant species richness and its application to a coastal wetland. Am. Nat. 149: 436-460.Grace JB, Pugesek BH (1997) A structural equation model of plant species richness and its application to a coastal wetland. American Naturalist 149: 436-460. DOI: ...
Equation 1: Shannon-Wiener Index of Diversity (H’) , where H’ = the Shannon-Wiener Index of Diversity R = # of unique species (i.e., species richness) p i = the proportional abundance of species i log p i = the logarithm of the proportional abundance of species i N n p i i ...
Vascular and Cryptogam Richness in the World's Highest Alpine Zone, Tibet Scale, environmental heterogeneities, stress, disturbance, and tolerance by individual species are the likely causes for these patterns... Baniya,C Bahadur - 《Mountain Research & Development》 被引量: 39发表: 2010年 Ecoclin...
Biodiversity is essential for human well-being, the functioning of ecosystems, and the sustained flow of benefits from ecosystems to individuals and societies. An important component of biodiversity is "species richness," the number of species in an ecological unit. Loss of species richness contribute...
Species richness and soil properties in Pinus ponderosa forests: A structural equation modeling analysis Question: How are the effects of mineral soil properties on understory plant species richness propagated through a network of processes involving the fores... DC Laughlin,SR Abella,WW Covington,.....
This study describe the general aspects of the Structural Equation Models as well as some extensions which have been proposed; these extensions looking for relax the underlying assumptions and generalize the technique. Then, based on a simplified model we consider the three stages to make an applica...
Here we extend the Price partition of the total expression of a single trait (such as leaf area) between two communities into five additive components: 1) species richness; 2) average species trait expression; 3) relative abundance; 4) the combined effects of relative abundance and trait ...
In nature species richness and composition, as well as the functioning of individual species, all covary along environmental gradients, making it difficult to tease apart their effects on ecosystem function. Here we use a novel extension of the Price equation to partition the causes of functional ...
Thus, species groups with negative richness responses to increasing temperature and potential solar radiation may have a competitive disadvantage to woody species, suggesting competitive displacement as one mechanism for these patterns. Our findings reveal that conditions associated with the high plant ...
woody species richnessGlobally, the intensification of land use for agriculture, timber and fuel is considered the leading threat to the diversity and biomass of forests and woodlands. To suggest management options, it is important to understand the patterns and drivers of diversity, structure, ...