نتایج جستجو برای: forest and ranch coverage
تعداد نتایج: 16857886 فیلتر نتایج به سال:
The aim of this study was to better understand the dynamics of Leishmania sand flies and reservoirs in São Domingos ranch, Arapongas municipality, Paraná State, an anthropic environment in an endemic area of cutaneous leishmaniasis (CL). Sand flies were collected in wild animal burrows, residences and in the forest, with Falcão light trap (FA), Shannon trap (SH) and quadrangular pyramidal trap ...
—Canopy coverage is a key variable used to characterize forest structure. In addition, the light transmitted through the canopy is an important ecological indicator of plant and animal habitat and understory climate conditions. A common groundbased method used to document canopy coverage is to take digital photographs from below the canopy. To assist with analyzing below-canopy photographs, the...
Topology maintenance, or how to handle the possibly concurrent joining and leaving of nodes, is acentral problem for structured peer-to-peer networks. A good topology maintenance protocol should runefficiently, fully maintain the topology, and should not unduly restrict concurrency. In this paper, wepresent such a protocol for a multi-ring topology called Ranch. The protocol is effi...
0006-3207/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.biocon.2009.05.025 * Corresponding author. Tel.: +254 20 891360/8902 E-mail addresses: [email protected] (D @bristol.ac.uk (R. Groom), [email protected] This study looks at the impact of subdivision and sedentarization of pastoral lands on wildlife numbers and production in a savanna ecosystem of southern Kenya. Th...
Concern that European forest biodiversity is depleted and declining has provoked widespread efforts to improve management practices. To gauge the success of these actions, appropriate monitoring of forest ecosystems is paramount. Multi-species indicators are frequently used to assess the state of biodiversity and its response to implemented management, but generally applicable and objective met...
Background: Forest edges create distinctive ecological space as adjacent constituents, which distinguish between different ecosystems or land use types. These edges are made by anthropogenic or natural disturbance and affects both abiotic and biotic factors gradually. This study was carried out to assess edge effects on disturbed landscape at the pine-dominated clear-cut area in a genetic resou...
Conventional ranching in Chiapas, Mexico includes a yearly pasture burn and agrochemical use that decreases the biodiversity and forest cover of ranch lands. Ranchers, self-described members of a “club” in the Fraylesca region of Chiapas, Mexico, have bucked convention and eliminated burns and agrochemicals from their systems after decades of use because they believed that the land and their pr...
For the first time, the effect of mechanical clearing of a native ohia/koa (Metrosideros polymorpha)/(Acacia koa) forest has been determined on some Hawaiian birds. Counts conducted on Keauhou Ranch, Island of Hawaii, at 6-month intervals, from December 1977/January 1978 through June/July 1983, showed that species richness and bird abundance were lower in the mechanically cleared or treated plo...
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