Population dynamics of the vicuña (Vicugna vicugna): density-dependence, rainfall, and spatial distribution
نویسندگان
چکیده
منابع مشابه
Vigilance behaviour of the year-round territorial vicuña (Vicugna vicugna) outside the breeding season: influence of group size, social factors and distance to a water source.
We conducted focal observations of vicuña, a year-around territorial mammal, to compare vigilance behaviour between territorial and bachelor males outside the reproductive season. We hypothesized that the time spent vigilant would depend on male social status, considering the potential effects of several variables: sampling year, group size, distances to the nearest neighbour and to a vega (mou...
متن کاملThe Effect of Station Density and Regional Division on Spatial Distribution of Daily Rainfall
Rainfall is one of the most important climatic variables in the hydrology cycle. In flood estimation as well as environmental pollution studies in medium to large watersheds not only mus temporal pattern of rainfall t be known, but also the knowledge of its spatial distribution is required. Estimation of daily rainfall distribution without comparison and selection of suitable methods may lead...
متن کاملThe Effect of Station Density and Regional Division on Spatial Distribution of Daily Rainfall
Rainfall is one of the most important climatic variables in the hydrology cycle. In flood estimation as well as environmental pollution studies in medium to large watersheds not only mus temporal pattern of rainfall t be known, but also the knowledge of its spatial distribution is required. Estimation of daily rainfall distribution without comparison and selection of 
suitable methods may le...
متن کاملImportant ectoparasites of Alpaca (Vicugna pacos)
Background Alpacas (Vicugna pacos), earlier named Lama pacos, belong to the family Camelidae of which there are 7 living species. Four are native to South America and of those four two are domestic species, the alpaca (Vicugna pacos) and the llama (Lama glama) and two are wild, the vicuña (Vicugna vicugna) and the guanaco (Lama guanicoe). These species are often referred to as the New World cam...
متن کاملMotility and recovery of alpaca (Vicugna pacos) spermatozoa after centrifugation in a density gradient solution
Background: One of the factors limiting successful processing of alpaca (Vicugna pacos) semen is the viscosity of seminal plasma. The viscous nature of the collected ejaculate has hindered sperm cryopreservation as well as artificial insemination (AI) under field conditions. Aims: The objective of this investigation was to evaluate recovery, motility, ...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2012
ISSN: 0022-2372,1545-1542
DOI: 10.1644/11-mamm-a-257.1