Don C DeLong’s research while affiliated with U.S. Fish and Wildlife Service and other places

... In addition, it can be determined in terms of genetic diversity, the identity and number of different types of species, the assemblages of species, and the amount and structure of each species. Biodiversity can also be studied at any spatial scale, ranging from microsites and habitat patches to the entire biosphere [3]. The term 'endemic' refers to the state of a species or taxon that is found to be restricted to a given area, such as a specific habitat, region, or continent [2]. ...

Reference:

A Global Bibliometric Analysis of Seaweed Biodiversity, Endemic Taxa, and Conservation (1992–2023)

... Nature is the features and processes of non-human origin that people can perceive (Hartig et al., 2014), therefore making it the background in which biodiversity exists. The number of species in an area is one of the many definitions of biodiversity (DeLong, 1996). But biodiversity and populations of species are rapidly declining (Díaz et al., 2019;Isbell et al., 2015). ...

Reference:

Comparing digital identification guides with traditional guidebooks in a bird field trip

... Biodiversity is the complete variety of life at any spatial scale, from microsites and habitat patches to the entire biosphere, including diversity within and between species, and ecosystems (DeLong 1996). It includes three hierarchical levels (CBD 1992;MEA 2005b;Turner 2018): ...

Reference:

Habitat Provisioning: A Regenerative Building Design Approach