The Endangered Species Act (ESA)—the key US law protecting species listed as threatened or endangered—focuses on boosting species' numbers until they reach recovery thresholds and so can be taken off the ESA list.
Almost 1400 species are now listed. Yet as many as 84 percent of currently listed species with management plans will face threats to their biological recovery even after they are considered "recovered" under the act, according to an article by Dale D. Goble and his colleagues in the October issue of BioScience. These species will require continuing management actions. Goble and colleagues argue that individual, formal conservation agreements are the best way to help such "conservation-reliant species."
The ESA was intended to interact with state and local regulations to prevent extinction. However, say Goble and his coauthors, these regulations are often insufficient to maintain a species' population, and the ESA itself may hinder the spread of a species—for example, a landowner may not wish to create habitat for a species that will then require monitoring under the ESA. Individual conservation agreements might not only help species' biological recovery and accelerate their removal from the ESA list, Goble and his colleagues maintain—they might prevent some species from having to be listed in the first place. To be effective, such agreements should be tailored to the species, landscape, landowners, conservation managers, and sources of funding of each situation.
Recognizing that conservation reliance is a deeper and more widespread problem for ESA-listed species than initially thought, Goble and his colleagues distinguish two forms of conservation reliance—population-management reliance and the less direct, threat-management reliance. The former will involve interventions aimed at helping specific populations. The latter is suitable for species that can persist if threats are managed so that an appropriate habitat is maintained.
Both sorts are illustrated in articles in the October BioScience. Goble's article is part of a special section that includes three case studies of specific conservation-reliant species. Carol I. Bocetti and her colleagues discuss conservation management agreements that will ensure continued availability of habitat for Kirtland's warbler. J. Michael Reed and his coauthors assess the status of Hawaii's endangered birds and how continued management is needed to maintain the populations of these species. Finally, the plight of the Mojave desert tortoise and its continuing management needs are addressed by Roy C. Averill-Murray and his colleagues.
BioScience, published monthly, is the journal of the American Institute of Biological Sciences (AIBS; www.aibs.org). BioScience is a forum for integrating the life sciences that publishes commentary and peer-reviewed articles. The journal has been published since 1964. AIBS is a meta-level organization for professional scientific societies and organizations that are involved with biology. It represents nearly 160 member societies and organizations. The article by Goble and colleagues can be accessed ahead of print at www.aibs.org/bioscience-press-releases/ until early October.
The complete list of peer-reviewed articles in the October, 2012 issue of BioScience is as follows. These are published ahead of print from 10 September.
Special Section: Conservation-Reliant SpeciesConservation-Reliant Species.
The Kirtland's Warbler as a Case Study. Carol I. Bocetti, Dale D. Goble, and J. Michael ScottLong-term Persistence of Hawaii's Endangered Avifauna Through Conservation-reliant Management.
J. Michael Reed, David W. DesRochers, Eric A. VanderWerf, and J. Michael ScottA New Approach to Conservation of the Mojave Desert Tortoise.
W. Kolby Smith, Maosheng Zhao, and Steven W. Running
Tim Beardsley | EurekAlert!
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy