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Open AccessArticle

The Aquatic Organisms Diversity, Community Structure, and Environmental Conditions

1
Institute of Hydrobiology of NAS of Ukraine, Geroyev Stalingrada Ave., 12, 04210 Kiev, Ukraine
2
Institute of Evolution, University of Haifa, Abba Khoushi Ave, 199, Mount Carmel, 3498838 Haifa, Israel
*
Author to whom correspondence should be addressed.
Diversity 2019, 11(10), 190; https://doi.org/10.3390/d11100190
Received: 11 September 2019 / Revised: 5 October 2019 / Accepted: 6 October 2019 / Published: 8 October 2019
(This article belongs to the Special Issue Freshwater Algal Diversity and Bio-Indication of Water Resources)
Two main aspects of the study of diversity can be distinguished: the first is related to the inventory of living organisms, the second is related to the organization of life at the level of biotic communities. Quantitative assessment of diversity is two-components as the richness of elements and their evenness. A model of the ecosystem continuum is proposed. The greatest indicators of diversity should be expected in the middle part of the environmental gradients with temporal stability. Study of producers and consumers in water bodies of Ukraine showed a regular change in their community structure in the gradient of saprobity indices. The decreasing of community diversity estimated by the Shannon index and by species richness was found at both high and low values of the saprobity indices. The fundamental coincidence of the empirical point fields of the Shannon index for the communities of invertebrates and phytoplankton with the field points of the empirical model indicates the universality of the bimodal distribution of diversity indicators in the trophic gradient. It is shown that the estimates by zoobenthos overestimate organic pollution compared with the calculations of the same indicators by phytoplankton. View Full-Text
Keywords: biodiversity; saprobity; ecosystem models; producers; consumers; species–environment relationships; power plant cooling pools; rivers; Ukraine biodiversity; saprobity; ecosystem models; producers; consumers; species–environment relationships; power plant cooling pools; rivers; Ukraine
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Protasov, A.; Barinova, S.; Novoselova, T.; Sylaieva, A. The Aquatic Organisms Diversity, Community Structure, and Environmental Conditions. Diversity 2019, 11, 190.

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