A threshold model for heron productivity

Besbeas, Panagiotis, Morgan, Byron J. T. (2012) A threshold model for heron productivity. Journal of Agricultural, Biological, and Environmental Statistics, 17 (1). pp. 128-141. ISSN 1085-7117. (doi:10.1007/s13253-011-0080-8) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:31264)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL: http://dx.doi.org/10.1007/s13253-011-0080-8

Abstract

We demonstrate the potential of conditionally Gaussian state-space models in integrated

population modeling, when certain model parameters may be functions of previous

observations. The approach is applied to a heron census, and the data are best

described by a model with three population-size thresholds which determine the population

productivity. The model provides an explanation of how the population rebounds

rapidly after major falls in size, which are characteristic of the data. By contrast, a

simple logarithmic regression of productivity on population size was not significant.

The results are of ecological interest, and suggest hypotheses for further investigation.

Item Type:	Article
DOI/Identification number:	10.1007/s13253-011-0080-8
Uncontrolled keywords:	Conditionally Gaussian, Density dependence, Integrated population modeling, Kalman filter, Non-linear models, P-splines, State-space model
Subjects:	Q Science > QA Mathematics (inc Computing science) > QA276 Mathematical statistics
Divisions:	Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Mathematics, Statistics and Actuarial Science
Depositing User:	Byron Morgan
Date Deposited:	04 Oct 2012 16:09 UTC
Last Modified:	16 Nov 2021 10:09 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/31264 (The current URI for this page, for reference purposes)

University of Kent Author Information

Besbeas, Panagiotis.

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Morgan, Byron J. T..

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