Navigation Links
Pioneering landscape-scale research releases first findings

The May issue of the Canadian Journal of Forest Research presents the preliminary findings of 23 scientists involved in one of the first landscape-scale experiments on how forest management affects western Ponderosa pine ecosystems.

The Blacks Mountain Interdisciplinary Research team includes U.S. Forest Service, Humboldt State University, Oregon State University, U.C. Riverside, University of Georgia and Wildlife Conservation Society scientists collaborating in research on large-scale manipulation of an ecosystem type extending from Mexico to Canada.

They present their findings in seven articles published as a special forum called, Ecological Studies in Interior Ponderosa PineFirst Findings from Blacks Mountain Interdisciplinary Research.

The research is intended to examine how controlled burns and changes in forest structure affect fire risk, retention of old-growth trees, insect infestations, wildlife and soils. It involved 12 plots of about 250 acres each in the 10,000-acre Blacks Mountain Experimental Forest in Northern Californias Lassen National Forest.

The site was selected because stands of old-growth trees can still be found on the experimental forest and research data collected from the site dates back to 1938, one of the oldest records of manipulation of a North American forest.

The scientists thinned stands so they either maintained a variety of sizes reminiscent of pre-settlement conditions or created a single canopy layer of even-aged trees characteristic of when loggers harvested the largest trees. They also completed controlled burns in half of each plot.

The team found that five years after thinning occurred, tree and stand growth significantly increased, and was even higher in even-aged stands with a single canopy layer.

This suggests that in the absence of treatments like thinning and controlled burns, old-growth characteristics will be lost as a result of lower growth rates and higher tree mortality. The scientists reached this conclusion by evaluating decades of growth data obtained on the experimental forest.

Controlled burns had little effect on the growth of large trees, but killed or weakened some smaller ones. Bark beetles were also more likely to colonize these weakened trees and therefore cause higher tree mortality.

The team also discovered a genus and species of a previously unknown ground-dwelling spider. Their research indicated old-growth characteristics intensified fire effects on spider populations because of increased forest debris.

Wildlife findings included a general lack of response from birds to thinning and controlled burns when some large trees were retained and burns were of low intensity.


Contact: Roland Giller
US Forest Service, Pacific Southwest Research Station

Related biology news :

1. The story of Max Perutz, a pioneering biologist with a remarkable passion for life
2. Research shows skeleton to be endocrine organ
3. Newly created cancer stem cells could aid breast cancer research
4. Dominant cholesterol-metabolism ideas challenged by new research
5. Researchers identify proteins involved in new neurodegenerative syndrome
6. Texas researchers and educators head for Antarctica
7. MGH researchers describe new way to identify, evolve novel enzymes
8. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
9. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
10. U of MN researchers discover noninvasive diagnostic tool for brain diseases
11. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
Post Your Comments:
(Date:6/20/2016)... Securus Technologies, a leading provider of ... safety, investigation, corrections and monitoring announced that after ... secured the final acceptance by all three (3) ... Systems (MAS) installed. Furthermore, Securus will have contracts ... by October, 2016. MAS distinguishes between legitimate wireless ...
(Date:6/9/2016)... , June 9, 2016 ... Police deploy Teleste,s video security solution to ensure the safety ... France during the major tournament Teleste, ... communications systems and services, announced today that its video security ... to back up public safety across the country. ...
(Date:6/2/2016)... YORK , June 2, 2016   The Weather ... is announcing Watson Ads, an industry-first capability in which consumers ... by being able to ask questions via voice or text ... Marketers have long sought ... the consumer, that can be personal, relevant and valuable; and ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... 24, 2016 , ... While the majority of commercial spectrophotometers and fluorometers use ... 6000i models are higher end machines that use the more unconventional z-dimension of 20mm. ... from the bottom of the cuvette holder. , FireflySci has developed several Agilent ...
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... Plate® YM (Yeast and Mold) microbial test has received AOAC Research Institute approval ... of microbial tests introduced last year,” stated Bob Salter, Vice President of Regulatory ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... launch of the Supplyframe Design Lab . Located in Pasadena, Calif., the ... future of how hardware projects are designed, built and brought to market. , ...
Breaking Biology Technology: