نتایج جستجو برای: 2005 home ranges movements
تعداد نتایج: 395952 فیلتر نتایج به سال:
The spatial scale of animal space use, e.g. measured as individual home range size, is a key trait with important implications for ecological and evolutionary processes as well as management and conservation of populations and ecosystems. Explaining variation in home range size has therefore received great attention in ecological research. However, few studies have examined multiple hypotheses ...
The home range dynamics of eleven roe deer (Capreolus capreolus) females were studied from 1995 to 1999 in the Foreste Casentinesi National Park, northern Apennines, Tuscany, Italy. The study area is mountainous with almost complete forest cover (95%) and snow usually falls from late October to April. Data were collected with radio-tracking techniques: the annual and bimonthly home range, the o...
Abstract Background Defining the spatial distribution, home range, and movement patterns of lake sturgeon ( Acipenser fulvescens ) is important to managers decision-makers given large migration potential potamodromous behavior exhibited by species. A remnant population remains in far eastern basin Lake Erie although recent efforts have estimated size, described age identified a primary spawning...
The franciscana dolphin, Pontoporia blainvillei, is one of the most threatened cetaceans in Southwestern Atlantic. Within their limited coastal range off Argentina, Uruguay, and Brazil, franciscanas face human activities, including artisanal gillnet fishing development. A lack information on ranging patterns, population structure, behavior for informing management led to efforts develop apply a...
Urban environments are increasing worldwide and are inherently different than their rural counterparts, with a variety of effects on wildlife due to human presence, increased habitat fragmentation, movement barriers, and access to anthropogenic food sources. Effective management of urban wildlife requires an understanding of how urbanization affects their behavior and ecology. The spatial activ...
A variety of methods are commonly used to quantify animal home ranges using location data acquired with telemetry. High-volume location data from global positioning system (GPS) technology provide researchers the opportunity to identify various intensities of use within home ranges, typically quantified through utilization distributions (UDs). However, the wide range of variability evident with...
We studied the ranging behavior of translocated and non-translocated groups of Alouatta pigra in Belize, Central America from March 1994 to May 1995. Home range size, day-range length and monthly range size were determined for all groups. In high density populations, home range size and day-range length increased with group size. Home range size increased with translocation to a low density pop...
Parametric and nonparametric kernel methods dominate studies of animal home ranges and space use. Most existing methods are unable to incorporate information about the underlying physical environment, leading to poor performance in excluding areas that are not used. Using radio-telemetry data from sea otters, we developed and evaluated a new algorithm for estimating home ranges (hereafter Permi...
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