|Title||Taxonomic considerations in listing subspecies under the U.S. Endangered Species Act.|
|Publication Type||Journal Article|
|Year of Publication||2006|
|Authors||Haig, SM, Beever, EA, Chambers, SM, Draheim, HM, Dugger, BD, Dunham, S, Elliott-Smith, E, Fontaine, JB, Kesler, DC, Knaus, BJ, Lopes, IF, Loschl, P, Mullins, TD, Sheffield, LM|
|Date Published||2006 Dec|
|Keywords||conservation, subspecies, taxonomy|
The U.S. Endangered Species Act (ESA) allows listing of subspecies and other groupings below the rank of species. This provides the U.S. Fish and Wildlife Service and the National Marine Fisheries Service with a means to target the most critical unit in need of conservation. Although roughly one-quarter of listed taxa are subspecies, these management agencies are hindered by uncertainties about taxonomic standards during listing or delisting activities. In a review of taxonomic publications and societies, we found few subspecies lists and none that stated standardized criteria for determining subspecific taxa. Lack of criteria is attributed to a centuries-old debate over species and subspecies concepts. Nevertheless, the critical need to resolve this debate for ESA listings led us to propose that minimal biological criteria to define disjunct subspecies (legally or taxonomically) should include the discreteness and significance criteria of distinct population segments (as defined under the ESA). Our subspecies criteria are in stark contrast to that proposed by supporters of the phylogenetic species concept and provide a clear distinction between species and subspecies. Efforts to eliminate or reduce ambiguity associated with subspecies-level classifications will assist with ESA listing decisions. Thus, we urge professional taxonomic societies to publish and periodically update peer-reviewed species and subspecies lists. This effort must be paralleled throughout the world for efficient taxonomic conservation to take place.
|Alternate Journal||Conserv. Biol.|
Taxonomic considerations in listing subspecies under the U.S. Endangered Species Act.
For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.
From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.
The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.