HOME >> BIOLOGY >> NEWS
City birds prefer rich neighbors

The Central Arizona-Phoenix Long Term Ecological Research Project has found that the bird population has a slightly higher species richness (number of species) and greater abundance (number of birds in general) in urban Phoenix than in the surrounding Sonoran Desert, but the real surprise comes in a recent study that shows that the city birds can be truly discriminating about where they choose to live. The study's results indicate that bird populations are influenced by economic factors -- more species live in wealthy neighborhoods than in middle and lower income areas.

In a study of 15 small community parks located in Phoenix neighborhoods with distinct socioeconomic classifications ranging from lower to upper income, Arizona State University ecologists Ann P. Kinzig and Paige Warren measured the abundance and diversity of both birds and trees. The researchers chose parks rather than residential yards because these city-controlled spaces offered comparable environments for the study sites, with a similar landscape (grass, athletic fields, facilities and scattered trees) but significant differences in the surrounding neighborhoods.

"What we are seeing is a pretty strong trend in the data," said Kinzig. "We can't explain bird diversity in the parks by the size of the parks, or the types or sizes of trees in the parks, which is what we might expect. Instead, the characteristics of the neighborhood, including the income of the residents, seem to play a significant role in influencing the number of species that live in the park ."

Trees and other vegetation are considered to be a major factor affecting bird populations. But the study's findings on diversity and abundance of park trees, which are the primary vegetation in the survey sites, do not correspond with the bird data. While bird populations were found to be most diverse in upper income neighborhood parks and progressively less diverse in parks in middle and lower income neighborhoods,
'"/>

Contact: James Hathaway
Hathaway@asu.edu
480-965-4823
Arizona State University
8-Aug-2002


Page: 1 2 3

Related biology news :

1. Parasitic cowbirds thrive with a less ruthless strategy than cuckoos
2. A changing landscape may have dire implications for birds
3. Songbirds escaped from Australasia, conquered rest of world
4. Sleepless over Seattle: Migrating songbirds forgo sleep but keep their wits
5. UW study: Migrating birds offer insight into sleep
6. Chemical reaction in birds provides sense of direction during migratory flights
7. Worlds oldest modern hummingbirds described in Science
8. Global warming may cause songbirds to avoid certain foods
9. Wright State biologist studies birds to learn how our stomachs convey thoughts of hunger
10. Snowbirds versus real birds
11. Researchers find new form of hormone that helps songbirds reproduce

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


(Date:3/14/2016)... March 14, 2016 http://www.apimages.com ... --> - Renvoi : image disponible via ... --> --> DERMALOG, le ... de nouveaux lecteurs d,empreintes digitales pour l,enregistrement des ... sera utilisé pour produire des cartes d,identité aux ...
(Date:3/10/2016)... --  Unisys Corporation (NYSE: UIS ) today announced ... testing its biometric identity solution at the Otay Mesa border ... identify certain non-U.S. citizens leaving the country. ... determine the efficiency and accuracy of using biometric technologies in ... until May 2016. --> the United States ...
(Date:3/8/2016)... , March 8, 2016   Valencell , ... today announced it has secured $11M in Series ... Tech, a new venture fund being launched by ... participation from existing investors TDF Ventures and WSJ ... to continue its triple-digit growth and accelerate its ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... ... May 03, 2016 , ... ... clinics and IVF laboratories. A contingency of reproductive endocrinologists, including Dr. George ... women experiencing infertility and to help them build families. , Ovation Fertility is ...
(Date:5/2/2016)... ... ... StarNet Communications Corp, ( http://www.starnet.com/ ) a leading publisher of remote Linux and ... its flagship X-Win32 PC X server. The new modules enable X-Win32 to safely ... encrypted SSH. , Traditionally, users of PC X servers deploy the XDMCP protocol to ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... pain medicine, is excited to announce the launch of the Proove Health ... studies, volunteerism, and education to promote the use of personalized medicine for tackling ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... to transform technology into a viable company, CereScan’s CEO, John Kelley, joined other ... a recognized leader and mentor in the Denver area business community, shared his ...
Breaking Biology Technology:
Cached News: