Timothy D. Male* and Michael J. Bean Environmental Defense, 1875 Connecticut Avenue, Washington, DC 20009, USA *Correspondence: E-mail: [email protected] Abstract Since passage of the Endangered Species Act in 1973, over 1300 endangered and threatened species have been protected in the USA and its territories. Most species continue to face a significant risk of extinction, but the status of many spe...

Leptagrion acutum Santos, 1961 is endemic to Brazil and, since 2003, listed as Critically Endangered in the Red Book of Threatened Brazilian Fauna. In this study, L. recorded for first time from state Bahia, expanding known occurrences species northern areas Atlantic Forest. Three males were collected Veracel Station Private Reserve Natural Heritage. Information concerning distributional record...

We, the NMFS, have completed a review of the status of the Pacific eulachon (Thaleichthys pacificus; hereafter ‘‘eulachon’’) under the Endangered Species Act (ESA) in response to a petition submitted by the Cowlitz Indian Tribe to list eulachon as a threatened or endangered species. After reviewing the best scientific and commercial information available, we have determined that the species is ...

Recovery efforts for threatened and endangered species often must be initiated with incomplete data. The outcomes of such efforts are difficult to predict, which makes monitoring the progress of recovery efforts an integral part of the recovery process. We evaluated the role of monitoring in recovery plans for 181 species listed as threatened and endangered under the U.S. Endangered Species Act...

The economic value of rare, threatened and endangered species to citizens of the USA has been measured using the contingent valuation method for 18 different species. Annual willingness to pay (WTP) range from a low of $6 per household for fish such as the striped shiner to a high of $95 per household for the northern spotted owl and its old growth habitat. A regression analysis of WTP values s...

A substantial proportion of the world's living species, including one-third of the reef-building corals, are threatened with extinction and in pressing need of conservation action. In order to reduce biodiversity loss, it is important to consider species' contribution to evolutionary diversity along with their risk of extinction for the purpose of setting conservation priorities. Here I reconst...

Nearly 40 years after passage of the US Endangered Species Act, the prospects for listed species remain dim because they are too severely imperiled by the time they receive the act’s protection. Even if threats are abated, the low abundances required for recovery often preclude a high probability of persistence. The lack of sufficient data for setting recovery objectives also remains a barrier....

Expenditure on endangered species management is increasing greatly, on a global basis. Managers need tools to evaluate the performance of endangered species programmes because there will always be more demand for resources than there are available. Cost Effectiveness Analysis (CEA) is used here to evaluate the performance of the kokako (Callaeas cinerea) recovery programme. This species is bein...

Persistent threats from fishing pressure and increasing habitat degradation, as well slow recovery rates resulting K-selected life histories, are putting numbers of elasmobranch species (sharks, rays skates) at risk extinction worldwide. Global declines in populations merit evidence-based conservation measures, but establishment such measures has been hindered by a paucity population-level data...