نتایج جستجو برای: forest ecology
تعداد نتایج: 155266 فیلتر نتایج به سال:
BRIAN H. HILL* , FRANK H. M CCORMICK , BRET C. HARVEY , SHERRI L. JOHNSON , MELVIN L. WARREN AND COLLEEN M. ELONEN* *U. S. Environmental Protection Agency, Mid-Continent Ecology Division, Duluth, MN, U.S.A. U. S. Forest Service, Rocky Mountain Research Station, Boise, ID, U.S.A. U. S. Forest Service, Pacific Southwest Research Station, Arcata, CA, U.S.A. U. S. Forest Service, Forestry Sciences ...
Ecology studies the relationships between living beings, environment, distribution, and abundance, how these properties are affected by interaction organisms environment in which they live (habitat), as well influence each being has on environment. Statistical methods fundamental for treatment of data dissemination information. The research focuses exposing multivariate techniques applied to an...
A shift from even-aged forest management to uneven-aged management practices leads to a problem rather different from the existing straightforward practice that follows a rotation cycle of artificial regeneration, thinning of inferior trees and a clearcut. A lack of realistic models and methods suggesting how to manage uneven-aged stands in a way that is economically viable and ecologically sus...
Although there are several lines of evidence regarding the prehistoric spread of farming peoples through the forest, nothing is known about the original pygmy occupation, nor the evolution of their relationship with the horticulturists. This paper will examine the history, geography, and ecology of that forest, and the prehistoric immigration of farming peoples in order to provide a context for...
El Pilar is a major Maya archeological site with components located on either side of the Belize-Guatemala frontier. This site presents an opportunity to explore the concept of "multiple use" of the natural resources of the greater Maya Forest in ways that have not yet been attempted. Success in such an endeavor would provide benefits to Mexico, Guatemala and Belize that envelop, countries with...
Effects of vegetation patterns on yields of the surface and subsurface waters in the Heishui Alpine Valley in west China Y. Liu, S. An, Z. Deng, N. Fan, H. Yang, Z. Wang, Y. Zhi, C. Zhou, and S. Liu Laboratory of Forest Ecology and Global Changes, School of Life Sciences, Nanjing University, Nanjing 210093, China Institute of Forest Ecology, Environment and Protection, the Chinese Academy of Fo...
Laboratory of Systems Ecology and Resource Management, Département de Biologie des Organismes, Faculté des Science , U iversité Libre de Bruxelles–ULB, CP 169, Avenue F.D. Roosevelt 50, 1050 Bruxelles, Belgium Institute of Forest Growth and Forest Computer Sciences, TU Dresden, P.O. 1117, 01735 Tharandt, Germany Laboratory of Ecology and Systematics, Faculty of Science, University of the Ryukyu...
T. Hájek ([email protected]), Inst. of Botany of ASCR, Dukelská 135, CZ 37982 Třeboň, Czech Republic. E-S. Tuittila and R. Laiho, Dept of Forest Ecology, Univ. of Helsinki, PO Box 27, FIN-00014 Helsinki, Finland. M. Ilomets, Dept of Landscape Ecology, Inst. of Ecology, Tallinn Univ., Uus-Sadama 5, EE 10120 Tallinn, Estonia. TH also at: Faculty of Science, Univ. of South Bohemia, Branišovská 31...
J. Beck ([email protected]) and L. Ballesteros-Mejia, Univ. of Basel, Dept of Environmental Sciences (Biogeography), CH-4056 Basel, Switzerland. – C. M. Buchmann, Univ. of Potsdam, Dept of Plant Ecology and Nature Conservation, DE-14469 Potsdam, Germany. – J. Dengler, Univ. of Hamburg, Biocentre Klein Flottbek and Botanical Garden, Biodiversity, Evolution and Ecology of Plants, DE-22609 Hambur...
Amazonian forest fragments and secondgrowth forests often differ substantially from undisturbed forests in their microclimate, plant-species composition, and soil fauna. To determine if these changes could affect litter decomposition, we quantified the mass loss of two contrasting leaf-litter mixtures, in the presence or absence of soil macroinvertebrates, and in three forest habitats. Leaf-lit...
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