HOME >> BIOLOGY >> NEWS
Population pressure shapes urban parks

A study of 10 Northeastern urban forests shows no sign that there is a common urban park plant complex, but does show that population levels affect both native and nonnative species diversity, according to a Penn State study.

"Less than 1 percent of species were common among all 10 parks," says Robert Loeb, associate professor of biology and forestry at Penn State's DuBois Campus. "This is evidence that common urban park flora does not exist and demonstrates that a diverse flora can be maintained in urban parks."

The parks studied were in Boston, New York, Philadelphia, Baltimore and Washington. All of the parks are more than 100 years old except for the three parks in the Gateway National Recreational Area, New York -- Breezy Point, Jamaica Bay, and the Wildlife Refuge which are all less than 60 years old. The other parks are Middlesex Fells, Boston; Pelham Bay and Van Cortland, The Bronx, New York; Pennypack and Wissahickon Creek, Philadelphia; Oregon Ridge, Baltimore and Rock Creek, Washington, D.C.

Loeb looked at populations of native and nonnative vascular plants in existing surveys of these parks and reported on his work in a recent issue of the Journal of the Torrey Botanical Society.

While all the parks have some fresh water habitat, four Pelham Bay, Breezy Point, Jamaica Bay and Wildlife Refuge have salt marsh and seashore environments. Loeb suggests that the long history of plantings in the parks appears to have resulted in greater species similarity among the parks in Baltimore, Washington, D.C. and The Bronx than among the parks in the Gateway National Wildlife Refuge, New York and Bronx, New York.

Dividing the 13 species found in all the parks into native and nonnative, 7 were native and 6 nonnative. The native species included red maple, yellow oxalis, and Virginia creeper. The nonnative species, all considered invasive species in the area, included dandelion, Japanese honeysuckle and tree of heave
'"/>

Contact: Vicki Fong
vfong@psu.edu
814-865-9481
Penn State
23-Feb-2007


Page: 1 2 3

Related biology news :

1. Population of rare gorillas may be increasing in war-torn Congo
2. High blood pressure, low energy -- a recipe for heart failure
3. Study finds gender differences in renal and other genes contributing to blood pressure
4. Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
5. How a pain in the neck could be bad for your blood pressure
6. High blood pressure medication strategy proves effective in Hispanic women
7. Consumption of small amounts of dark chocolate associated with reduction in blood pressure
8. Crammed with charged DNA, pressure rises inside virus
9. 8 plants from South Africa may hold potential for treating high blood pressure
10. Blame the brain for high blood pressure
11. Advance in understanding of blood pressure gene could lead to new treatments

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


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: