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:3/2/2020)... ... 2020 , ... Nominations are now being accepted for the 2020 Women ... (SIA) and SecureIDNews and co-presented with sponsors IDEMIA , ... of this year’s Women in Biometrics Awards will be honored at the 2020 SIA ...
(Date:2/28/2020)... ... 2020 , ... Meridian Clinical Research , a leading investigative research network, ... for Best Clinical Trial Site. Meridian is also the largest member of Platinum ... These nominations were the result of two voting rounds, and winners will be announced ...
(Date:2/28/2020)... ... February 27, 2020 , ... An ... innovative treatment solutions for maladies, such as Inflammatory Bowel Disease (IBD), specifically Crohn’s ... segment will focus on a novel platform developed by Deka Biosciences, Inc. (Deka ...
Breaking Biology News(10 mins):
(Date:3/12/2020)... ... March 12, 2020 , ... ... microscopy (AFM) technology, increases the business investment in Europe by inaugurating a new ... Grand Opening Ceremony of the new Nanoscience Center Europe took place Tuesday, February ...
(Date:3/4/2020)... ... March 04, 2020 , ... ... services, today announced the launch of its FleXpress™ high-throughput recombinant antibody production ... of antibodies at 80 ml scale. All production occurs in Absolute Antibody’s ...
(Date:3/2/2020)... ... March 02, 2020 , ... McBee, Moore and Vanik ... list in the field of Biotechnology and Organics. , According to statistics compiled by ... of 259 patents issued in technology center 1600 during 2019. Technology center 1600 at ...
(Date:2/21/2020)... (PRWEB) , ... February 20, ... ... an exquisite capability to perform complex, efficient and elegant chemistry. Humans have ... algorithms to our own goals. , Through rapidly evolving technologies and strategies ...
Breaking Biology Technology:
Cached News: