منابع مشابه
A Distribution Free Nesting Survival Model
In nesting survival studies nests are not found until after incubation has begun and therefore nests which fail are of unknown age while nests which succeed can be aged afterwards. Typically ornithologists have considered the survival time to be from first encounter and have used the Mayfield method (Mayfield 1961, 1975) or variations of it. Here we consider a new discrete survival model which ...
متن کاملA hierarchical nest survival model integrating incomplete temporally varying covariates
Nest success is a critical determinant of the dynamics of avian populations, and nest survival modeling has played a key role in advancing avian ecology and management. Beginning with the development of daily nest survival models, and proceeding through subsequent extensions, the capacity for modeling the effects of hypothesized factors on nest survival has expanded greatly. We extend nest surv...
متن کاملFractal bird nest distribution produces scale-free colony sizes.
The spatial distribution of organisms often differs across scales. For instance, colonial bird populations could be described, from large to small scale, as scattered clumps of otherwise regularly distributed breeding pairs. We analysed the distribution of nests of a large colonial population of white storks (Ciconia ciconia) and found a fractal pattern in each of the 4 study years. Moreover, w...
متن کاملModeling heterogeneity in nest survival data.
Current statistical methods for estimating nest survival rates assume that nests are identical in their propensity to succeed. However, there are several biological reasons to question this assumption. For example, experience of the nest builder, number of nest helpers, genetic fitness of individuals, and site effects may contribute to an inherent disparity between nests with respect to their d...
متن کاملBlack Skimmer Nest Survival in Mississippi
The nest survival of the Black Skimmer (Rynchops niger) in coastal Mississippi was modeled to better understand their breeding biology and suggest management strategies for protecting nesting colonies. During the 2004 and 2005 breeding seasons a total of 301 nests was monitored and hatching success was 67% in 2004 and 39% in 2005. Mean clutch size differed between years, although mean incubatio...
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ژورنال
عنوان ژورنال: Mathematical and Computer Modelling
سال: 1989
ISSN: 0895-7177
DOI: 10.1016/0895-7177(89)90271-9