William Link, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 44
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Filter Total Items: 128
Individual covariation in life-history traits: Seeing the trees despite the forest Individual covariation in life-history traits: Seeing the trees despite the forest
We investigated the influence of age on survival and breeding rates in a long-lived species Rissa tridactyla using models with individual random effects permitting variation and covariation in fitness components among individuals. Differences in survival or breeding probabilities among individuals are substantial, and there was positive covariation between survival and breeding...
Authors
E. Cam, W.A. Link, E.G. Cooch, J. #NAME? Monnat, E. Danchin
Suggestions for presenting the results of data analyses Suggestions for presenting the results of data analyses
We give suggestions for the presentation of research results from frequentist, information-theoretic, and Bayesian analysis paradigms, followed by several general suggestions. The information-theoretic and Bayesian methods offer alternative approaches to data analysis and inference compared to traditionally used methods. Guidance is lacking on the presentation of results under these...
Authors
David R. Anderson, William A. Link, Douglas H. Johnson, Kenneth P. Burnham
Predicting chick survival and productivity of Roseate Terns from data on early growth Predicting chick survival and productivity of Roseate Terns from data on early growth
Early growth of Roseate Tern (Sterna dougallii) chicks is a strong predictor of chick survival and hence of productivity. We developed discriminant functions to predict chick survival from body-masses measured during the first 3 days of life. Productivity is estimated by assuming that almost all A-chicks (first-hatched in each brood) survive to fledging, and using the discriminant...
Authors
I.C.T. Nisbet, Jeff S. Hatfield, W.A. Link, J. A. Spendelow
Controlling for varying effort in count surveys: An analysis of Christmas Bird Count data Controlling for varying effort in count surveys: An analysis of Christmas Bird Count data
The Christmas Bird Count (CBC) is a valuable source of information about midwinter populations of birds in the continental U.S. and Canada. Analysis of CBC data is complicated by substantial variation among sites and years in effort expended in counting; this feature of the CBC is common to many other wildlife surveys. Specification of a method for adjusting counts for effort is a matter...
Authors
W.A. Link, J.R. Sauer
Regional analysis of population trajectories from the North American Breeding Bird Survey Regional analysis of population trajectories from the North American Breeding Bird Survey
The North American Breeding Bird Survey (BBS) was started in 1966, and provides information on population change and distribution for most of the birds in North America. The geographic extent of the survey, and the logistical compromises needed to survey such a large area, present many challenges for estimation from BBS data. In this paper, we describe the survey and discuss some of the
Authors
J.R. Sauer, W.A. Link
On the importance of controlling for effort in analysis of count survey data: Modeling population change from Christmas Bird Count data On the importance of controlling for effort in analysis of count survey data: Modeling population change from Christmas Bird Count data
Count survey data are commonly used for estimating temporal and spatial patterns of population change. Since count surveys are not censuses, counts can be influenced by 'nuisance factors' related to the probability of detecting animals but unrelated to the actual population size. The effects of systematic changes in these factors can be confounded with patterns of population change. Thus...
Authors
W.A. Link, J.R. Sauer
Science and Products
Filter Total Items: 44
No results found.
Filter Total Items: 128
Individual covariation in life-history traits: Seeing the trees despite the forest Individual covariation in life-history traits: Seeing the trees despite the forest
We investigated the influence of age on survival and breeding rates in a long-lived species Rissa tridactyla using models with individual random effects permitting variation and covariation in fitness components among individuals. Differences in survival or breeding probabilities among individuals are substantial, and there was positive covariation between survival and breeding...
Authors
E. Cam, W.A. Link, E.G. Cooch, J. #NAME? Monnat, E. Danchin
Suggestions for presenting the results of data analyses Suggestions for presenting the results of data analyses
We give suggestions for the presentation of research results from frequentist, information-theoretic, and Bayesian analysis paradigms, followed by several general suggestions. The information-theoretic and Bayesian methods offer alternative approaches to data analysis and inference compared to traditionally used methods. Guidance is lacking on the presentation of results under these...
Authors
David R. Anderson, William A. Link, Douglas H. Johnson, Kenneth P. Burnham
Predicting chick survival and productivity of Roseate Terns from data on early growth Predicting chick survival and productivity of Roseate Terns from data on early growth
Early growth of Roseate Tern (Sterna dougallii) chicks is a strong predictor of chick survival and hence of productivity. We developed discriminant functions to predict chick survival from body-masses measured during the first 3 days of life. Productivity is estimated by assuming that almost all A-chicks (first-hatched in each brood) survive to fledging, and using the discriminant...
Authors
I.C.T. Nisbet, Jeff S. Hatfield, W.A. Link, J. A. Spendelow
Controlling for varying effort in count surveys: An analysis of Christmas Bird Count data Controlling for varying effort in count surveys: An analysis of Christmas Bird Count data
The Christmas Bird Count (CBC) is a valuable source of information about midwinter populations of birds in the continental U.S. and Canada. Analysis of CBC data is complicated by substantial variation among sites and years in effort expended in counting; this feature of the CBC is common to many other wildlife surveys. Specification of a method for adjusting counts for effort is a matter...
Authors
W.A. Link, J.R. Sauer
Regional analysis of population trajectories from the North American Breeding Bird Survey Regional analysis of population trajectories from the North American Breeding Bird Survey
The North American Breeding Bird Survey (BBS) was started in 1966, and provides information on population change and distribution for most of the birds in North America. The geographic extent of the survey, and the logistical compromises needed to survey such a large area, present many challenges for estimation from BBS data. In this paper, we describe the survey and discuss some of the
Authors
J.R. Sauer, W.A. Link
On the importance of controlling for effort in analysis of count survey data: Modeling population change from Christmas Bird Count data On the importance of controlling for effort in analysis of count survey data: Modeling population change from Christmas Bird Count data
Count survey data are commonly used for estimating temporal and spatial patterns of population change. Since count surveys are not censuses, counts can be influenced by 'nuisance factors' related to the probability of detecting animals but unrelated to the actual population size. The effects of systematic changes in these factors can be confounded with patterns of population change. Thus...
Authors
W.A. Link, J.R. Sauer