Navigation Links
Natural regeneration building urban forests, altering species composition
Date:8/22/2012

o a high of 89 percent in Los Angeles, according to the study. Results indicated that in cities located in grassland or desert regions, a greater percentage of the urban tree population is planted compared to cities in forested regions. The percentage of planted trees also increases with increased population density and impervious cover.

The factors that affect tree cover also play a role in natural regeneration. Precipitation, air temperatures, surrounding natural vegetation type, and the distribution of land use types in the city all influence how much seed source exists and whether seedlings grow. Land use plays a role in whether seedlings are mowed down or whether paved surfaces prevent seedling establishment, and ultimately affect a city's need for tree planting to sustain tree cover.

"Before we can say how many trees we need to plant, we need to know how many trees are regenerating naturally and how many are dying," according to Nowak. "Planting programs to sustain tree cover can be greatly improved with long-term monitoring data to show how the urban forest is changing."

Researchers evaluated the magnitude of natural regeneration or tree planting across an entire city system by randomly locating 0.04-hectare field plots in each city and recording tree measurements as well as an estimate of whether a sampled tree was planted or occurred through natural regeneration. Crews based their estimates on surrounding conditions. For example, trees along fence lines or in unmaintained areas were generally classified as naturally regenerated, while trees in maintained lawn areas or street trees were typically classified as planted. Residential and commercial/industrial areas have the highest proportion of planted trees, 74.8 percent and 61.2 percent respectively, while trees found in parks, cemeteries, golf courses, open space/vacant land, agricultural fields and wetlands are predominately the result of natural regeneration.

The study also evaluated two
'/>"/>

Contact: Jane Hodgins
jmhodgins@fs.fed.us
651-649-5281
USDA Forest Service - Northern Research Station
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Biology professor secures grant to save West Virginias primary natural history collection
2. Validity CTO to Present Natural ID Solutions for Improving Mobile Risk Management and User Experience at NFC Solutions Summit 2012
3. Honoring the fundamental role of microbes in the natural history of our planet
4. Resveratrol may be a natural exercise performance enhancer: U of A medical research
5. Naturally adhesive
6. No matter the drilling method, natural gas is a much-needed tool to battle global warming
7. The ecology of natural gas
8. Bringing natural history collections out of the dark
9. Health care savings, naturally
10. Eco-computer with a natural wood look
11. Ben-Gurion University of the Negev receives $450,000 grant to conduct oil and natural gas research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/21/2014)... Conn. , Aug. 21, 2014 Nxt-ID, ... the growing mobile commerce market, announced today that its ... common stock to be issued in its proposed underwritten ... approved for listing on The Nasdaq Capital Market, subject ... the common stock and warrants, and will trade under ...
(Date:8/21/2014)... study aimed at improving the food intake, health and ... homes is among three projects at the University of ... the Canadian Institutes of Health Research (CIHR). , ... Sciences at Waterloo, and a Schlegel research chair in ... to investigate why many Canadians living in long-term care ...
(Date:8/21/2014)... , Saturday to Wednesday, Oct. 18-22, 2014 , ... W. Harbor Drive, San Diego, CA 92101 , ... and other presentations of the latest research in ... plenary session featuring high-scoring abstracts on rare genetic ... various cancers, and treatment for sun sensitivity (Saturday, ...
Breaking Biology News(10 mins):Nxt-ID Approved for NASDAQ Capital Market Listing 2Nxt-ID Approved for NASDAQ Capital Market Listing 3Grants will fund landmark aging research at Waterloo 2American Society of Human Genetics 2014 Annual Meeting 2
... is available in Spanish . , The ... other forms of synaesthesia in which flavours are evoked ... time units, colours by music, etc. Experts on Experimental ... phenomenon. The results of this research have been published ...
... the ravages the disease can take on almost every ... addictive behaviors, even after a period of peaceable abstinence" ... brain active during decision making. "It,s perhaps ... that they have trouble thinking through a decision," said ...
... skates (skates made of animal bones) are the oldest ... BC. Why people started skating on ice and where ... in several locations spread across Central and North Europe. ... Journal of the Linnean Society of London, Dr Formenti ...
Cached Biology News:1 person out of every 1,000 has synaesthesia, in which an individual can smell a sound 21 person out of every 1,000 has synaesthesia, in which an individual can smell a sound 31 person out of every 1,000 has synaesthesia, in which an individual can smell a sound 4Cognitive, genetic clues identified in imaging study of alcohol addiction 2Cognitive, genetic clues identified in imaging study of alcohol addiction 3Cognitive, genetic clues identified in imaging study of alcohol addiction 4
(Date:8/22/2014)... New York (PRWEB) August 22, 2014 ... one of the interesting and challenging endeavors as ... renders highly impervious properties to the foreign substances. ... as possibility of self medication and minimal use ... low molecular weight drugs and provides specific targeting ...
(Date:8/22/2014)... Aug. 22, 2014 Research and Markets ... Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, ... report to their offering. The global ... in 2013, and is expected to grow at a ... Molecular biology enzymes, kits, & reagents find applications in ...
(Date:8/22/2014)... Canada (PRWEB) August 22, 2014 ... in model organisms can be accelerated by exome ... and manufacturing technologies, the custom SeqCap EZ Developer ... research. , Mr. Watson will additionally present how ... with commercially available human and mouse exome kits. ...
(Date:8/21/2014)... MD (PRWEB) August 21, 2014 DNA ... making progress in its development of JRC-LAMP-vax, an innovative ... cedar pollen. Phase IC studies began this month in ... to hay fever. , The Japanese red cedar releases ... people in Japan. Mountain Cedar pollen wreaks similar havoc ...
Breaking Biology Technology:Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 4Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 2Global Molecular Biology Enzymes, Kits, & Reagents (Cloning, Epigenetics, PCR, Restriction Digestion, Sequencing) Market - Forecast to 2018 3Efficient Identification of Protein-Coding Variants in a Model Organism Through Exome Sequencing, New Webinar Hosted by Xtalks 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 4
... and GAITHERSBURG, Maryland, November 2, 2011 ... -based HPV Testing Increases Screening Coverage and is More ... Online in the Lancet Promising findings published ... a community-based, randomized equivalence trial undertaken by public health authorities ...
... announced that data from REMEDEE ( R andomized ... sirolimus coat ED bio- E ngineered ... Combo Bio-engineered Sirolimus Eluting Stent (Combo Dual Therapy Stent), will be ... Session at TCT 2011 in San Francisco. The presentation entitled "REMEDEE: ...
... Pharmaceuticals, Inc. (NASDAQ: OPTR ) today announced ... Credit Suisse Healthcare Conference on Thursday, November 10 at ... (Logo:   http://photos.prnewswire.com/prnh/20090413/LA97352LOGO ) A live ... the Investors page of the Company,s website at ...
Cached Biology Technology:Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 2Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 3Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 4Home-based Self-collected Vaginal Specimens Detect More Cervical Lesions and Cancers Than Cytology 5Data From REMEDEE Trial Featuring OrbusNeich's Combo™ Dual Therapy Stent to be Presented in Late Breaking Clinical Trials and First Report Investigations Session at TCT 2011 2Data From REMEDEE Trial Featuring OrbusNeich's Combo™ Dual Therapy Stent to be Presented in Late Breaking Clinical Trials and First Report Investigations Session at TCT 2011 3
...
Cag-A (IgG) -Ab EIA Sample Size: 10 l...
... Recombinant Ribonuclease Inhibitor is a ... ribonucleases such as RNase A. ... Recombinant Ribonuclease Inhibitor is an ... weight ~52 kDa. RNaseOUT inhibits ...
... Inhibitor (Ribonuclease inhibitor) is a ... to inhibit RNase activity. It ... endonuclease activity. , Inhibits ... RNA template , Lacks ...
Biology Products: