Because biodiversity is multidimensional and scale‐dependent, it is challenging to estimate
its change. However, it is unclear (1) how much scale‐dependence matters for empirical …

Environmental (e) DNA, as a general approach in aquatic systems, seeks to connect the
presence of species' genetic material in the water and hence to infer the species' physical …

One of the most fundamental questions in ecology is how many species inhabit the Earth.
However, due to massive logistical and financial challenges and taxonomic difficulties …

We propose an integrated sampling, rarefaction, and extrapolation methodology to compare
species richness of a set of communities based on samples of equal completeness (as …

On the basis of the sampling data from an assemblage, estimation of species richness
(observed plus undetected) is statistically difficult especially for highly-diverse assemblages …

Introduction Recent decades have seen a major international effort to inventory tree
communities in the Amazon Basin and Guiana Shield (Amazonia), but the vast extent and …

Aims In ecology and conservation biology, the number of species counted in a biodiversity
study is a key metric but is usually a biased underestimate of total species richness because …

The biodiversity crisis is one of the greatest challenges facing humanity, but our
understanding of the drivers remains limited. Thus, after decades of studies and regulation …

Objective Sample size in surveys with open-ended questions relies on the principle of data
saturation. Determining the point of data saturation is complex because researchers have …

Objective The relevance of the microbe-gut-brain axis to psychopathology is of interest in
anorexia nervosa (AN), as the intestinal microbiota plays a critical role in metabolic function …