Andrew PurdonMAP Scientific Services
Andrew Purdon
Developing geospatial solutions for conservation organisations so that they can protect landscapes more effectively.
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17
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Publications
Publications (17)
Savannas once constituted the range of many species that human encroachment has now reduced to a fraction of their former distribution. Many survive only in protected areas. Poaching reduces the savanna elephant, even where protected, likely to the detriment of savanna ecosystems. While resources go into estimating elephant populations, an ecologic...
Migration is an important, but threatened ecological process. Conserving migration requires the maintenance of functional connectivity across sufficiently large areas. Therefore, we need to know if, where and why species migrate. Elephants are highly mobile and can travel long distances but we do not know if they migrate. Here, we analysed the move...
African elephants (Loxodonta africana) are well-studied and inhabit diverse landscapes that are being transformed by both humans and natural forces. Most tools currently in use are limited in their ability to predict how elephants will respond to novel changes in the environment. Individual-, or agent-based modeling (ABM), may extend current method...
Contradictory findings among scientific studies that address a particular issue may impede the conversion of science to management implementation. A systematic review of peer-reviewed studies to generate a single outcome may overcome this problem. The contentious topic of the impact that a megaherbivore such as the savanna elephant have for other s...
Developing innovative monitoring systems for biodiversity outcomes in protected areas (PAs) are important to enable effective adaptive management. Here we show how to quantitatively detect and monitor temporal and spatial patterns in environmental heterogeneity, an important indicator of ecological integrity and biodiversity patterns. We used a 28-...
The number of papers published each year since 1947 on the effect that elephant had on the environment.
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Frequency distributions of the individual elephant effects (k) on soil properties.
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Selection parameters of the candidate generalized linear mixed-effects models that describe the variation in direct effects.
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Complete list of scholarly papers on elephant impact.
(DOCX)
Type, description, and source of the variables included in the generalized linear mixed-effects models to explain elephant impact.
(DOCX)
Selection parameters of the candidate generalized linear mixed-effects models that describe the variation in indirect effects.
(DOCX)
Additional methods and supporting results and references.
This file contains Supporting Information Materials and Methods; Figure A (study schematic), Figure B (23 time series and best-fit population models); Figure C (partial residual plots of components of model averaged GLM to explain PIKE values from MIKE sites); Figure D (comparison of GAMs to...
