HOME >> BIOLOGY >> NEWS
Survival Of The Yellowstone Grizzlies, Ferns As Forest Filters And The Role Of Worms In Climate Change: The April Edition Of Ecology Is Now Available

The latest edition of Ecology is now available. The journal includes studies on a wide variety of topics, including:

Demography of the Yellowstone Grizzly Bears
Yellowstone's grizzly bears (Ursus arctos) may seem awesomely powerful to National Park visitors, but a new study suggests they are still very threatened as a species. Written by Craig Pease (Vermont Law School) and David Mattson (US Geological Survey, Biological Resources Division), the paper analyzed nearly two decades of data on radio-collared bears in the Yellowstone ecosystem. The researchers concluded that the number of bears has changed little in the past two decades, despite intensive grizzly bear management. Bear mortality is nearly double in years when the whitebark pine crop fails, and the whitebark pine itself is in trouble, say the authors. The pine crop is now failing almost every other year, and widespread suppression of fires has also been detrimental to its health. Global warming may also pose a threat to the tree species. People also cause bear mortality in both direct and indirect ways, the researchers assert. Humans have directly caused 70-90% of all known grizzly bear deaths in the Yellowstone ecosystem since the 1970s. Whitebark pines are found at higher elevations that tend to be less used by humans. When the pine crop fails, the bears move to lower-elevation sites (which are closer to humans) to feed. "When the whitebark pine crop fails, the grizzly bear is hit with a double whammy," says Pease. "Simply being around more people increases their immediate chance of death. And by foraging closer to humans, grizzlies lose their natural wariness of people. Those bears will then have an increased risk of death forever, even in years with abundant pine seeds."

The Fern Understory as an Ecological Filter
They are seedless, flowerless and relatively small in stature, but a new study suggests that ferns can play an important role in determining the
'"/>

Contact: Alison Gillespie
alison@esa.org
202-416-6181
Ecological Society of America
7-Apr-1999


Page: 1 2 3

Related biology news :

1. Survival strategies in nature
2. Survival of the fastest: scientists selectively breed winning Formula One cars
3. Ecology lab aids Turtle Survival Alliance
4. Survival tactics in bacteria - environmental conditions fit for mankind
5. Survival of quaking aspen groves a complex problem
6. Study Suggests Vaccine Increases Survival In Ovarian And Breast Cancer Patients Following High-Dose Chemotherapy And Autologous Stem Cell Transplant
7. A Versatile Signal In Vertebrate Embryogenesis: Wnt-4 Regulates Kidney Development, Sex Organ Differentiation, Neuronal Survival And Axonal Guidance
8. Dietary Vitamin A Supplements Improve Maternal Survival In South Asia
9. Cell Suicide Prevented By Survival Signals
10. Oxygen-Carrying Myoglobin Not Necessary For Survival
11. Combination Therapy For Brain Tumors Holds Promise For Longer Survival After Surgery

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2019)... ... 2019 , ... Lighting designers from integrated design firm LPA recently ... for creating both engaging and energy efficient lighting systems. , The lighting for the ... San Diego, California earned an IES Illumination Award of Merit in the Energy and ...
(Date:6/19/2019)... ... June 19, 2019 , ... Dahryn Trivedi, today released ... of Cefazolin Sodium, antibiotic which can prove to be beneficial for treating multiple bacterial ... in residue amount , Over 68% decrease in weight , ...
(Date:6/14/2019)... ... ... Molecular diagnostics segment is the fastest-growing segment within the global IVD market. ... that are expected to drive the growth are infectious diseases, cancer, and transplant diagnostics. ... The World Molecular Diagnostics Market, 8th Edition . , The discovery of the ...
Breaking Biology News(10 mins):
(Date:7/17/2019)... ... July 16, 2019 , ... Quidel is ... from Kalorama Information. Abbott, Roche and Siemens Healthineers and Response Biomedical also are ... Worldwide Market for Point-of-Care (POC) Diagnostics . , Quidel is a market ...
(Date:6/26/2019)... ... 2019 , ... Alice Branton today released research results from preclinical trials on ... which can prove to be beneficial for treating Hypomagnesemia. , The preclinical trial shows:, ... crystallite size , Over 142% increase in particle size , ...
(Date:6/11/2019)... ... June 10, 2019 , ... ... technology in an upcoming episode, scheduled to broadcast 4Q/2019. Check your local listings ... and will educate viewers about how its technology facilitates laboratories to improve efficiency ...
(Date:6/6/2019)... ... 05, 2019 , ... WCCT Global, Inc ., a full-service early phase ... they will be receiving 3 awards at the 2019 CRO Leadership Awards, to be ... the categories of overall Quality and Compatibility (Access to desired markets, cultural fit, timely ...
Breaking Biology Technology:
Cached News: