Results 251 to 260 of about 5,470,624 (304)

Wetland ecological index and assessment of spatial-temporal changes of wetland ecological integrity

Science of The Total Environment, 2023
Long-term, quantitative, and dynamic monitoring of regional ecological integrity using remote sensing can provide powerful decision-making support for sustainable regional development. However, existing methods are unable to accurately evaluate the quality of the surface ecological integrity because they do not consider vegetation saturation and ...
Zhimei, Zhang, Yanguo, Fan, Zhijun, Jiao
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A functional evenness index for microbial ecology

Microbial Ecology, 1981
Microbial ecologists attempting to describe community structures through the use of synthetic parameters face enormous difficulties. These stem in part from the necessity of using standard taxonomic reference levels in a field where the species level is poorly defined. This paper presents an attempt to obviate this problem.
M, Troussellier, P, Legendre
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Cycling in ecological networks: Finn’s index revisited

Computational Biology and Chemistry, 2004
A chief cybernetic feature of natural living systems is the recycling of nutrients, which tends to enhance stability and is one of the principal causes of ecosystem complexity. In 1976, Finn proposed a simple and effective measure (later known as the Finn cycling index [FCI]) to assess the quantitative importance of cycles in ecosystems. This index was
Stefano Allesina, Robert E. Ulanowicz
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Ecological indexes in analytical chemistry

Zhurnal Analiticheskoi Khimii
The development of environmentally safe methods of analytical chemistry has been one of the dominant directions of scientific research in recent decades. Ecological indexes have become a valuable tool for assessing and quantitatively determining the impact of conducting chemical analysis on the environment.
A. Yu. Shishov, O. B. Mokhodoeva
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Modified cycling index for ecological applications

Ecological Modelling, 1984
Abstract Published measures of cycling in compartmental models are based on throughflow. Throughflow consists of flow only, not storage. Inclusive throughflow is introduced as a concept that includes both flow and storage. Cycling measures based on this concept are developed. Two Markov chains expressing the probability of transfer of substance from
Bernard C. Patten, Masahiko Higashi
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The Delivering Ecological Services Index (DESI) [PDF]

, 2012
This document is the result of the Rural Territorial Dynamics Program, implemented by Rimisp in several Latin American countries in collaboration with numerous partners. The program has been supported by the International Development Research Center (IDRC, Canada).
McLennan, D., Sharma, R.
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