Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Norman A Slade"'
Autor:
Helen M Alexander, Aaron W Reed, W Dean Kettle, Norman A Slade, Sarah A Bodbyl Roels, Cathy D Collins, Vaughn Salisbury
Publikováno v:
PLoS ONE, Vol 7, Iss 12, p e52762 (2012)
Monitoring programs, where numbers of individuals are followed through time, are central to conservation. Although incomplete detection is expected with wildlife surveys, this topic is rarely considered with plants. However, if plants are missed in s
Externí odkaz:
https://doaj.org/article/d75a7376c6444d17bd5c037853ee3029
Autor:
Norman A. Slade, Aaron W. Reed
Publikováno v:
Journal of Animal Ecology. 81:953-959
1. Under the hypothesis of environmental buffering, populations are expected to minimize the variance of the most influential vital rates; however, this may not be a universal principle. Species with a life span
Publikováno v:
Journal of Mammalogy. 93:211-219
Many species of wild mammals occur in habitats that have been disturbed by fragmentation or degraded in quality. Previous researchers have hypothesized that demographic characteristics of populations may shift with changes in environmental conditions
Autor:
Guiming M. Wang, Jack W. Witham, Stephen H. Vessey, Alban Guillaumet, Lowell L. Getz, Joseph F. Merritt, Malcolm L. Hunter, Norman A. Slade, N. Thompson Hobbs
Publikováno v:
Ecography. 36:439-446
Deterministic feedbacks within populations interact with extrinsic, stochastic processes to generate complex patterns of animal abundance over time and space. Animals inherently differ in their responses to fluctuating environments due to differences
Publikováno v:
Journal of Ecology. 97:1390-1400
Summary 1. Most population dynamics studies are geographically restricted, yet species ranges are large. We performed multiyear roadside surveys of the sunflower, Helianthus annuus, at two locations that differ in precipitation (eastern Kansas, KS; w
Autor:
Norman A. Slade, Aaron W. Reed
Publikováno v:
Journal of Mammalogy. 90:680-685
We used regression trees to assess seasonal relationships between vital rates (survival and reproduction) and a suite of environmental variables for hispid cotton rats (Sigmodon hispidus) and prairie voles (Microtus ochrogaster). We found only 2 rela
Publikováno v:
Journal of Ecology. 97:267-276
Summary 1 Analysis of population trajectories is central to assessing risk in populations of conservation concern. In animal studies, researchers realize that probabilities of detection of individuals are often less than one. Plants can also escape d
Autor:
Malcolm L. Hunter, Stephen H. Vessey, Jack W. Witham, Joseph F. Merritt, Jerry O. Wolff, Guiming Wang, Norman A. Slade, Susan P. Elias
Publikováno v:
Population Ecology. 51:133-142
Temporal variation in population size is regu- lated by both exogenous forces and density-dependent feedbacks. Furthermore, accumulating evidence indicates that temporal and spatial variation in climate and resources can modify the strength of densit
Autor:
Norman A. Slade, Tiffany Cummins
Publikováno v:
The Southwestern Naturalist. 52:79-82
Based on 13 y of trapping data, captures of the western harvest mouse (Reithrodontomys megalotis) in northeastern Kansas decreased significantly in summer. Reduced rates of capture could have arisen from reduced numbers or behavioral changes. We foun
Autor:
Aaron W. Reed, Norman A. Slade
Publikováno v:
Journal of Zoology. 272:110-115
Environmental stochasticity in vital rates influences the dynamics of structured populations. Stochastic models of population dynamics often assume that vital rates vary independently, an assumption that may be violated in many populations. We estima