Navigation Links
Study: urban black bears 'live fast, die young'
Date:9/30/2008

NEW YORK (SEPTEMBER 30, 2008) Black bears that live around urban areas weigh more, get pregnant at a younger age, and are more likely to die violent deaths, according to a study by the Wildlife Conservation Society (WCS).

The study, published in the Fall 2008 issue of the journal Human-Wildlife Conflicts, tracked 12 bears over a 10-year period living in urban areas around Lake Tahoe, Nevada and compared them to 10 "wildland" bears that lived in outlying wild areas. The authors found that bears in urbanized areas weighed an average of 30 percent more than bears in wild areas due to a diet heavily supplemented by garbage. The authors believe that because the bears weigh more they are giving birth at an earlier age on average when they are between 4-5 years old, as compared to 7-8 years for bears in wild areas. Some urban bears even reproduced as early as 2-3 years of age around Lake Tahoe.

Urban bears also tend to die much younger due mostly to collisions with vehicles, according to the study. All 12 urban bears tracked by the researcher were dead by age 10 due to vehicle collisions, while six of the wildland bears still survived. Bear cubs in urban areas also had dramatically higher mortality rates due mainly to vehicle collisions.

"Urban areas are becoming the ultimate bear traps," said Wildlife Conservation Society researcher Jon Beckmann, the study's lead author. "Because of an abundant food source namely garbage bears are being drawn in from backcountry areas into urbanized landscapes where they meet their demise."

The study warns that urbanized areas are functioning as "sinks" for black bear populations, drawing in bears from outlying wild areas, where they ultimately die. As a result, bears are failing to re-colonize outlying wild areas following this shift to urban centers.

The authors believe that without these sinks, populations of black bears in Nevada could increase. Right now
'/>"/>

Contact: Stephen Sautner
ssautner@wcs.org
718-220-3682
Wildlife Conservation Society
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: Typhoons bury tons of carbon in the oceans
2. Study: Migrant laborers valuable to horticulture industry
3. Study: Future snowmelt in West twice as early as expected; threatens ecosystems and water reserves
4. U-M study: Herceptin targets breast cancer stem cells
5. Stanford study: Bioenergy potential of reviving abandoned agricultural land
6. Geisinger study: Inflammatory disease causes blindness
7. Mouse study: When it comes to living longer, its better to go hungry than go running
8. Smithsonian study: Sediment prediction tools off the mark
9. Study: weight-loss tips differ in African-American, mainstream magazines
10. Mayo Clinic study: Ossurs collars superior in immobilization and reduction of pressure
11. First-ever study: lack of critical lubricant causes wear in joints
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... 22, 2014 ... announced the addition of the  "Biometrics ... to their offering.       ... a technology that helps in the ... physical or behavioral features. It involves ...
(Date:8/22/2014)... Thomson Reuters , a leading source of information for ... University of California, Riverside in its 2014 list of ... times." , To generate the list, the company analyzed ... whose published work has had enormous impact. , The ... individuals who published the greatest number of highly cited ...
(Date:8/22/2014)... CA Research presented at the 29th Annual ... developed by Hera Therapeutics Inc. combats three types ... 70 percent of all cervical cancer. , When ... blocked the replication of HPV-16, HPV-18 and HPV-11 ... Thomas Broker, Ph.D., who presented the findings at ...
Breaking Biology News(10 mins):Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 2Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 35 UC Riverside scientists among world's most influential scientific minds 2
... is available in Polish . A ... mouse embryos can repair damaged brain circuitry and partially normalize ... obese due to a genetic deficiency. This proof-of-principle discovery represents ... which researchers hope might one day be used to repair ...
... National Taiwan University researchers have successfully manipulated the life span ... remove and restore protein functions related to yeast aging. ... in yeast acts like a life span clock: It is ... age. In a report in the September 16 edition ...
... and the University of Geneva have discovered a genetic mechanism ... genes play only a secondary role. The research published in ... mechanism is found in a DNA sequence that was thought, ... enhancers which, when combined with one another, modulate the activity ...
Cached Biology News:Metabolic defects in mice corrected with transplanted embryonic neurons 2Hopkins scientists turn on fountain of youth in yeast 2Finger (mal)formation reveals surprise function of desert DNA 2
(Date:8/22/2014)... August 22, 2014 Today the Academy of ... United States Court of Appeals for the D.C. Circuit challenging ... published in the Federal Register on June 25, 2014. ... contrary to the text and intent of the FAA Modernization ... Congress’ specific prohibition on any new rules or regulations regarding ...
(Date:8/22/2014)... 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") today ... 30, 2014.  Biorem,s complete 2014 second quarter financial statements and MD&A have ... June 30, , Six-months ended June 30, ( ... 2013 , 2014 , 2013 Revenue , ... 9,195 Gross profit , 56 , 1,485 ...
(Date:8/22/2014)... University of Surrey have discovered how the receptors responsible ... genes. , The new study, published today in ... activity in turn regulates the cycle of all cells ... that the local biological clock and its control are ... clock in bladder physiology and ageing. , ...
(Date:8/22/2014)... a study published today (August 22nd), in the ... the Champalimaud Neuroscience Programme establish the effect of ... of advanced genetic and optical techniques., "Serotonin is ... a wide range of brain functions, from the ... of complex emotional behaviours, This neurotransmitter is also ...
Breaking Biology Technology:AMA Files Petition for Review of FAA’s Interpretive Rule 2Biorem Reports 2014 Second Quarter Results 2Biorem Reports 2014 Second Quarter Results 3Treatment for overactive bladder and irritable bowel syndrome advanced through pioneering research 2From happiness to pain: Understanding serotonin's function 2
... Wis. -- Gov. Jim Doyle says taxpayers will ... total of nearly $80 million over the lifetime of ... and services, including a number of technology areas. , ... Accountability, Consolidation, and Efficiency (ACE) Initiative to ensure ...
... of Milwaukee is one of six first-year college students from ... Online's "Project Freshman," a new documentary series that will be ... Friday, Sept. 23. New episodes will air every Thursday. The ... were given digital video cameras and were trained in their ...
... -- The Wisconsin Technology Council has teamed with PropertyDrive, ... database of commercial real estate on the Tech Council ... on the site's Resource Center, Commercial Property Search. , ... locate or expand in Wisconsin the ability to search ...
Cached Biology Technology:
Rabbit polyclonal to Flagellin ( Abpromise for all tested applications). Antigen: Synthetic peptide from the flagellin C terminal domain of Burkholderia pseudomallei....
This application changes sensitive keywords in an FCS file to remove patient information. It was contributed by Dr. David Miller....
... Killer Cell Receptor-P1, clone 1C10 ... Hybridoma produced by the ... mice immunized (BALB/c X C57BL/6)F1 ... and mouse myeloma cellline. ...
Phospho-SEK1/MKK4 (Thr261) Antibody...
Biology Products: