Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wild tigers need cat food

15.12.2006
New study says that tigers can maintain high numbers -- provided there is enough to eat

A landmark study by the Wildlife Conservation Society (WCS) and U.S. Geological Survey (USGS) says tigers living in one of India’s best-run national parks lose nearly a quarter of their population each year from poaching and natural mortality, yet their numbers remain stable due to a combination of high reproductive rates and abundant prey.

The study, which appears in the journal Ecology, underscores the need of maintaining protected areas with high prey densities in an overall tiger conservation strategy, along with anti-poaching efforts and eliminating trade in tiger body parts.

The nine-year study in India’s Nagarahole National Park found that an average of 23 percent of the park’s tigers either move away or die each year from either naturally or from poaching outside of the park, yet total numbers remained high.

"This study shows that even well-protected wild tiger populations have naturally high rates of annual losses, and yet do fine because of their high reproductive rates," said WCS researcher Dr. Ullas Karanth, lead author of the study. "The conservation implications of this study show that effectively protecting reserves to maintain high prey densities is a key pillar in an overall strategy for the conservation of tigers."

The research team, which included Dr. Karanth and Dr. Jim Nichols from USGS, used remote cameras to identify individual tigers and then accurately estimate population trends in the park. Tigers can produce between 3-4 cubs per litter every 2-3 years.

Unfortunately, in other parts of the tiger’s range, relentless poaching of the big cats and their prey has caused numbers to plummet. Another WCS study that appeared in a recent issue of the journal Animal Conservation revealed that tiger numbers in a protected area along the Laos-Vietnam border are severely depressed from commercial poaching, and prey depletion which may increase competition between large carnivores.

"The good news is that given the chance, tigers can replenish their numbers; the bad news is that they are not being given that chance in many parts of their range," said WCS’s noted big-cat researcher Dr. Alan Rabinowitz.

Earlier this year, WCS launched a new program called "Tigers Forever" that pledges a 50 percent increase in tiger numbers in key areas over the next decade.

Stephen Sautner | EurekAlert!
Further information:
http://www.wcs.org

More articles from Ecology, The Environment and Conservation:

nachricht Scientists produce a new roadmap for guiding development & conservation in the Amazon
09.12.2016 | Wildlife Conservation Society

nachricht Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main

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: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>