Utilization of Woody Plants by Beavers in Northeastern Ohio
نویسندگان
چکیده
Relative abundance of woody plants and their utilization by beavers (Castor canadensis) were measured on watersheds in Ashtabula and Columbiana Counties, Ohio, in 1966-67. A food index showed aspen (Populus sp.), alder (Alnus sp.), hop-hornbeam (Ostrya virginiana), black cherry (Prunus serotina), willow (Salix sp.)> dogwood (Cornus sp.) and oak (Quercus sp.) to be major foods; 20 different woody species were utilized. The amount of use of a single species seemed to depend largely on the relative availability of all food species. All topographic features may influence site occupancy by beavers, but in this study, fluctuating water level was the factor most detrimental to sustained habitation. After being exterminated in Ohio by 1830 (Chapman, 1949, p. 174), beavers were reported reappearing in the state in 1936 in counties bordering Pennsylvania (Bednarik, 1965). Since then, they have exerted considerable local influence on streams and watersheds of the area. This study was undertaken to determine utilization of woody vegetation and characteristics of sites occupied by beavers on certain watersheds of northeastern Ohio. Information on the influence of beavers on habitat, in addition to data on beaver productivity (Henry and Bookhout, 1969), is necessary for practical beaver management on a sustained yield basis.
منابع مشابه
Toxicity Assessment of SiO2 Nanoparticles to Pear Seedlings
To date, the effects of nanoparticles on woody plants remain unaddressed. This study reveals some of the physiological and biochemical effects of SiO2 nanoparticles on wild pear seedlings. The seedlings were irrigated with different concentrations of nano silica (0, 10, 100, 500 and 1000 mg/l) for 14 days. Nanoparticle adsorption and absorption, biomass allocation, gas exchange, relative water ...
متن کاملRestricted cross-scale habitat selection by American beavers
Animal habitat selection, among other ecological phenomena, is spatially scale dependent. Habitat selection by American beavers Castor canadensis (hereafter, beaver) has been studied at singular spatial scales, but to date no research addresses multi-scale selection. Our objectives were to determine if beaver habitat selection was specialized to semiaquatic habitats and if variables explaining ...
متن کاملIsolation of high-quality RNA from a wide range of woody plants
Isolation of high-quality RNA is one of the most crucial methods in molecular biology. RNA extraction from woody plants has been problematic due to the presence of rigid and woody tissues, large amounts of polysaccharides, polyphenols and other secondary metabolites. Here we present a suitable protocol for RNA isolation from a wide range of woody plants that includes eight gymnosperms and four ...
متن کاملPlant traits enabling survival in Mediterranean badlands in northeastern Spain suffering from soil erosion
Question: This study analyzed the effect of severe soil erosion on species composition of plant communities by favouring species showing certain growth forms, root-sprouting and clonal growth abilities. Location: The study area was located between the middle Ebro Valley and the PrePyrenees (northeastern Spain). Methods: Root-sprouting and shoot-rooting abilities, clonal reproduction and growth ...
متن کامل