Book ChapterDOI
On sampling procedures in population and community ecology
TLDR
The results indicate that the decision-making process in sampling must be viewed as a flexible exercise, dictated not by generalized recommendations but by specific objectives: there is no panacea in ecological sampling.Abstract:
In this paper we emphasize that sampling decisions in population and community ecology are context dependent. Thus, the selection of an appropriate sampling procedure should follow directly from considerations of the objectives of an investigation. We recognize eight sampling alternatives, which arise as a result of three basic dichotomies: parameter estimation versus pattern detection, univariate versus multivariate, and a discrete versus continuous sampling universe. These eight alternative sampling procedures are discussed as they relate to decisions regarding the required empirical sample size, the selection or arrangement of sampling units, and plot size and shape. Our results indicate that the decision-making process in sampling must be viewed as a flexible exercise, dictated not by generalized recommendations but by specific objectives: there is no panacea in ecological sampling. We also point to a number of unresolved sampling problems in ecology.read more
Citations
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Journal ArticleDOI
Purposive Sampling as a Tool for Informant Selection
TL;DR: The purposive sampling technique is a type of non-probability sampling that is most effective when one needs to study a certain cultural domain with knowledgeable experts within.
Journal ArticleDOI
Sampling Design and Statistical Methods for Environmental Biologists
J. M. Elliott,Roger H. Green +1 more
Journal ArticleDOI
Vegetation ecology: theory, methods and applications with reference to Fennoscandia
Journal ArticleDOI
On randomization testing in vegetation science: multifactor comparisons of relevé groups
Valério D. Pillar,László Orlóci +1 more
TL;DR: The general idea of randomization testing is discussed, a method is described and its application in group comparisons is interpreted, which has versatility of testing uni- or multifactor designs, which is novel in phytocoenological applications.
Journal ArticleDOI
Two decades of describing the unseen majority of aquatic microbial diversity.
TL;DR: This review presents advances, gaps and caveats of these recent approaches when considering microorganisms in aquatic ecosystems, and discusses potentials and limitations of the available methodologies, from water sampling to sequence analysis, and suggests alternative ways to incorporate results in a conceptual and methodological framework.
References
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Book
Aims and Methods of Vegetation Ecology
TL;DR: Aims and methods of vegetation ecology are studied to propose new strategies for the sustainable management of vegetation in the arid areas.
Journal ArticleDOI
Distance to Nearest Neighbor as a Measure of Spatial Relationships in Populations
Philip J. Clark,Francis C. Evans +1 more
TL;DR: In this article, the authors studied the vulnerability of several species to trapping on the islands and found that the islands appeared to lag behind the mainland in the development of their populations and the populations of small mammals fluctuate quite widely and the several populations appear to be somewhat independent of each other.