The species concept is the cornerstone of biodiversity science, and any paradigm shift in the
delimitation of species affects many research fields. Many biologists now are embracing a …

The oceans appear ideal for biodiversity—they have unlimited water, a large area, are well
connected, have less extreme temperatures than on land, and contain more phyla and …

Soil is an immense habitat for diverse organisms across the tree of life, but just how many
organisms live in soil is surprisingly unknown. Previous efforts to enumerate soil biodiversity …

Motivation: Sequence-based methods to delimit species are central to DNA taxonomy,
microbial community surveys and DNA metabarcoding studies. Current approaches either …

The species problem has triggered the publication of an almost infinite number of theoretical
and practical studies, including quite a number of books. I should, therefore, perhaps briefly …

The statistical rigor of species delimitation has increased dramatically over the past decade.
Coalescent theory provides powerful models for population genetic inference, and is now …

Background Taxonomy is the biological discipline that identifies, describes, classifies and
names extant and extinct species and other taxa. Nowadays, species taxonomy is …

Despite the broad benefits that DNA barcoding can bring to a diverse range of biological
disciplines, a number of shortcomings still exist in terms of the experimental design of …

Abstract New, rapid, accurate, scalable, and cost-effective species discovery and
delimitation methods are needed for tackling “dark taxa,” here defined as groups for which …

The issue of species delimitation has long been confused with that of species
conceptualization, leading to a half century of controversy concerning both the definition of …