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:11/5/2014)... show great diversity in their ability to identify scents ... differ in their perceptual evaluation of odors, with women ... , Sex differences in olfactory detection may play ... connected to one,s perception of smell, which is naturally ... superiority has been suggested to be cognitive or emotional, ...
(Date:11/4/2014)... (Philadelphia, PA) – Temple University School of Medicine ... Explorations winner, an initiative funded by the Bill ... MPH, Professor of Obstetrics, Gynecology and Reproductive Sciences; ... at Temple University School of Medicine will pursue ... titled "Maternal Blood Biomarkers to Assess Fetal Neurodevelopment.", ...
(Date:11/4/2014)... November 4, 2014   ... growth   Fuel3D , a developer of ... funding round totaling $6.4 million (£4 million). This funding builds ... earlier this year and paves the way for the commercial ... The funding round was led by Chimera Partners and ...
Breaking Biology News(10 mins):The female nose always knows: Do women have more olfactory neurons? 2Temple University School of Medicine receives Grand Challenges Explorations grant 2Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3
... to improve low cost methods for carbon capture. Scientists ... national synchrotron to investigate the efficiency of calcium oxide ... results, published in the journal of Energy & ... the key mechanisms involved. This new knowledge will inform ...
... 2012) -- Using mutant zebra fish, researchers studying the earliest ... gotten a look at a mechanism involved in a genetic ... in the Aug. 1 issue of the journal Development ... scrutiny in future research into Fraser syndrome, a many-faceted and ...
... millennia, humans have pondered their mortality and whether death ... an afterlife. Millions of Americans have reported near-death or ... believe in an afterlife, from reincarnation to resurrection and ... abound, but there has been no comprehensive and rigorous, ...
Cached Biology News:Low-cost carbon capture gets X-rayed 2Low-cost carbon capture gets X-rayed 3Study of zebra fish mouth formation may speak to Fraser syndrome hearing loss 2Study of zebra fish mouth formation may speak to Fraser syndrome hearing loss 3$5 million grant awarded to UC Riverside to study immortality 2$5 million grant awarded to UC Riverside to study immortality 3$5 million grant awarded to UC Riverside to study immortality 4
(Date:11/27/2014)... DUBLIN , Nov. 27, 2014 ... of the "Global Palmitic Acid Industry Report 2014" ... http://photos.prnewswire.com/prnh/20130307/600769 The Global Palmitic Acid ... on the current state of the global palmitic acid ... of the industry including definitions, classifications, applications and industry ...
(Date:11/27/2014)... PITTSFIELD, Massachusetts, USA (PRWEB) November 26, 2014 ... with more accuracy, additive systems to enable 3D manufacture ... by analyzing road conditions are among finalists in nine ... Innovation . The awards are sponsored by SPIE, ... Photonics Media . , Winners will be announced ...
(Date:11/26/2014)... The North America Thermal Protective ... for detailed analysis of the growth trends and ... $616.3 million by 2018, growing at a CAGR ... through the TOC of the North America Thermal ... of the in-depth analysis and industry segmentation supported ...
(Date:11/26/2014)... -- The Alliance for Safe Biologic Medicines ... physicians at the "1 ST EuropaBio – ... the Spanish Ministry of Health, Social Services and ... Spanish Bioindustry Association (ASEBIO), included regulators from the ... and rheumatology societies, representatives from a hospital pharmacist ...
Breaking Biology Technology:Global Palmitic Acid Industry Report 2014 2Finalists Named for 2015 Prism Awards for Photonics Innovation 2Finalists Named for 2015 Prism Awards for Photonics Innovation 3Finalists Named for 2015 Prism Awards for Photonics Innovation 4Finalists Named for 2015 Prism Awards for Photonics Innovation 5The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3ASBM Presents European Physicians Survey at Spanish Ministry of Health 2
... , MILFORD, Mass., Dec. 9 ... it has shipped the first units of its ground-breaking SYNAPT(TM) ... American Society of Mass Spectrometry (ASMS) annual conference in Philadelphia ... research centers across Europe, North America and Asia and for ...
... , ... firm announces opening of its Brazilian regional office , ... Chicago, Ill. (Vocus) December 9, 2009 -- As ... globe, The Adventus Group, a world leader in the contaminated soil , sediment ...
... Dec. 8 Dendreon Corporation (Nasdaq: DNDN ) announced ... to market and other conditions, of 15,000,000 shares of its ... Dendreon intends to grant to the underwriters a 30-day ... common stock to cover over-allotments, if any. J. P. ...
Cached Biology Technology:Waters Ships First Units of SYNAPT G2 Mass Spectrometer 2Olympics 2016, World Cup 2014, But First – Adventus Brasil 2009 2Olympics 2016, World Cup 2014, But First – Adventus Brasil 2009 3Olympics 2016, World Cup 2014, But First – Adventus Brasil 2009 4Dendreon Announces Proposed Public Offering of Common Stock 2Dendreon Announces Proposed Public Offering of Common Stock 3
Phospho-CD18 (Ser756/Thr758/759) Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Goat polyclonal to SART1 ( Abpromise for all tested applications). Antigen: Synthetic peptide: GSSKKHRGEKEAA, corresponding to N terminal amino acids 2-14 of Human SART1. Entrez Gene ID: 909...
Phospho-Cyclin D1 (Thr286) Antibody...
STX18 Immunogen: STX18 (NP_058626, 101 a.a. ~ 200 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Biology Products: