Effects of thermal discharge from Neka power plant (southern Caspian Sea) on macrobenthic diversity and abundance
| Autor: | Mohammad Reza Shokri, Ayda Bozorgchenani, Jafar Seyfabadi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Hot Temperature Physiology Iran Positive correlation 010603 evolutionary biology 01 natural sciences Biochemistry Spearman's rank correlation coefficient Thermal discharge chemistry.chemical_compound Abundance (ecology) Macrobenthos Animals Organic matter Statistical analysis chemistry.chemical_classification 010604 marine biology & hydrobiology Water Biodiversity Pigments Biological Invertebrates Oceanography chemistry Chlorophyll Environmental science General Agricultural and Biological Sciences Developmental Biology Power Plants |
| Zdroj: | Journal of thermal biology. 75 |
| ISSN: | 0306-4565 |
| Popis: | Effects of thermal discharge from Neka power plant on macrobenthic diversity and abundance was studied in the southern coast of the Caspian Sea. Samples were collected with Van Veen grab of 0.0250 m2 surface area from 7 stations in winter and summer. A total of 42 species were identified that belonged to 22 genera, 18 families, 13 orders, six classes and three phyla. Bivalve with a total abundance of 90% in winter and 86% in summer constituted the most abundant group throughout samplings, the highest abundance of which belonged to the family Cardiidae. Gastropods followed bivalve in total abundance (8%) in summer and polychaetes (7%) in winter. Statistical analysis indicated significantly higher macrobenthos density at the thermal discharge stations that also took separate positions in the cluster analysis. Temperature was an important factor on the amount of organic matter. Chlorophyll and phaeopigment at the thermal discharge stations were lower than the other stations because of the increased turbulence. The CCA test indicated that temperature was the most influential among all the studied physicochemical factors. The Spearman rank correlation coefficient also showed that the majority of macrobenthic groups had a positive correlation with the organic matter (r = 0.34, p |
| Databáze: | OpenAIRE |
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