منابع مشابه
Imperfect detection and its consequences for monitoring for conservation
Biodiversity monitoring is important to identify conservation needs and test the efficacy of management actions. Variants of “abundance” (N) are among the most widely monitored quantities, e.g., (true) abundance, number of occupied sites (distribution, occupancy) or species richness.We propose a sampling-based view of monitoring that clearly acknowledges two sampling processes involved when mon...
متن کاملAssessing the utility of statistical adjustments for imperfect detection in tropical conservation science
1. In recent years, there has been a fast development of models that adjust for imperfect detection. These models have revolutionized the analysis of field data, and their use has repeatedly demonstrated the importance of sampling design and data quality. There are, however, several practical limitations associated with the use of detectability models which restrict their relevance to tropical ...
متن کاملCharacterization for imperfect polarizers under imperfect conditions.
The principles for measuring the extinction ratio and transmittance of a polarizer are formulated by use of the principal Mueller matrix, which includes both polarization and depolarization. The extinction ratio is about half of the depolarization, and the contrast is the inverse of the extinction ratio. Errors in the extinction ratio caused by partially polarized incident light and the misalig...
متن کاملFuture imperfect
It is widely known that our closest relatives, the great apes, which hold some of the potentially richest genetic insights into our own evolution, are under threat in their natural environments. But a new assessment of our only Asian cousin, the orangutan, by the Worldwide Fund for Nature suggests numbers have declined by 90 per cent over the past century and that extinction in the wild may occ...
متن کاملImperfect Checking
This article presents a unified solution to two long-standing problems concerning successive cyclicity. First, under the minimalist program of Chomsky (1995), a trigger for successive-cyclic wh-movement to [–wh] SpecC positions must be identified. Second, as noted by den Besten & Webelhuth (1990), there is a strict prohibition against unbound intermediate traces that result from a combination o...
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ژورنال
عنوان ژورنال: e-conservation Journal
سال: 2014
ISSN: 2183-1335
DOI: 10.18236/econs2.201401