Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Hundreds of Threatened Species Not on Official US List

13.12.2011
Many of the animal species at risk of extinction in the United States have not made it onto the country’s official Endangered Species Act (ESA) list, according to new research from the University of Adelaide.

National "red lists" are used by many countries to evaluate and protect locally threatened species. The ESA is one of the best known national lists and arguably the world’s most effective biodiversity protection law.

A study - now published in the latest issue of Conservation Letters - has compared the ESA list of endangered species with the world’s leading threatened species list, the International Union for the Conservation of Nature (IUCN) Red List.

The study has found that of the American species included on the IUCN Red List, 40% of birds, 50% of mammals, and 80-95% of other species such as amphibians, gastropods, crustaceans, and insects, were not recognised by the ESA as threatened.

This amounts to approximately 531 American species on the IUCN Red List that have not made the ESA protection list. These include bird species such as the critically endangered Kittlitz's murrelet (Brachyramphus brevirostris), the endangered ashy storm-petrel (Oceanodroma homochroa), and the vulnerable cerulean warbler (Dendroica cerulea).

"The ESA has protected species since its establishment in 1973, and it may have prevented 227 extinctions. However, the implementation of the ESA by successive US governments has been problematic, including poor coverage of imperilled species, inadequate funding, and political intervention," says study leader Bert Harris, a native of Alabama who is undertaking his PhD with the University of Adelaide’s Environment Institute and School of Earth & Environmental Sciences.

"Vague definitions of 'endangered' and 'threatened' and the existence of a 'warranted but precluded' category on the ESA list are also contributing to the gap in species classification,” he says.

Mr Harris says a detailed evaluation of the ESA's coverage of the IUCN Red List was "well overdue".

"The ESA is a powerful environmental law but its impact is limited. With many species being overlooked, this does not bode well for the ESA's ability to mitigate species decline before they become critically imperilled.

"The IUCN Red List is imperfect, but it is the leading global threatened species list. It involves collaboration of many scientists, and regular refinement of its categories and criteria," Mr Harris says.

The study was conducted in collaboration with the University of California, Santa Cruz, the National University of Singapore and the University of Göttingen, Germany.

Media contact:

Bert Harris
PhD student, Environment Institute and School of Earth & Environmental Sciences
The University of Adelaide
Phone: +61 8 8303 5254
bert.harris@adelaide.edu.au
www.adelaide.edu.au/directory/bert.harris

Bert Harris | Newswise Science News
Further information:
http://www.adelaide.edu.au

More articles from Ecology, The Environment and Conservation:

nachricht How does the loss of species alter ecosystems?
18.05.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Excess diesel emissions bring global health & environmental impacts
16.05.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

 
Latest News

Scientists propose synestia, a new type of planetary object

23.05.2017 | Physics and Astronomy

Zap! Graphene is bad news for bacteria

23.05.2017 | Life Sciences

Medical gamma-ray camera is now palm-sized

23.05.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>