Variability in benthic invertebrate community structure near warm water effluents of a power plant in the southern Caspian Sea

Farshchi, Morteza; Nasrolahi, Ali; Shokri, Mohammad Reza

doi:10.1016/j.rsma.2020.101507

Cited by 3 publications

(1 citation statement)

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“…Diversity in physiological tolerance, life cycle strategies, type of nutrition and on nutritional interactions in macrobenthos communities make these communities suitable for assessing environmental conditions (Sánchez-Moyano et al, 2010;Zhang et al, 2013;Mulik et al, 2020). In addition, these organisms play an important functional role in disrupting sediments, providing nutrients to higher nutrient groups, as well as habitat creation (Farshchi et al, 2020). Also, macrobenthos play an important role as secondary producers in the seas and play a key role in the food chain (Sowa et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial changes of macrobenthos communities in south east shores of the Caspian sea

Javandel

Akhoundian²

2021

Nexo Revista Científica

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In this research, Sampling of macrobenthos of Mazandaran beaches was performed in 7 stations at two depths of 5 and 10 meters during four seasons in 2020 using a grab with 8 replications in each station. In this study, a total of 10472 individuals were counted, which belonging to 22 species from 13 families. The highest frequency of macrobenthos (648 ± 170.79) was observed in spring and the highest amount of biomass (36.21 ±2.5 gr / m2) was observed in winter. Moreover, the highest prevalence of macrobenthos predominant groups during the sampling period was observed in Bivalves (40%), Crustaceans (36%), Annelids (22%) and Gastropoda (2%), respectively. The results of PERMANOVA analysis showed that the effect of two factors of season and depth impacted the biomass, abundance, species richness, species composition and community structure of macrobenthos significantly. Furthermore, the results showed that with increasing the depth from 5 to 10 meters, macrobenthos abundance increased by 4, 2, 1 and 9 times in spring, summer, autumn and winter, respectively. Moreover, increase in depth from 5 to 10m, the values of biomass and species richness have increased. In according to these results, it can be concluded that biomass and diversity index of macrobenthos communities change considerably in different seasons and depths. Therefore, natural changes of these variables should be considered when using these macrobenthos communities to assess the impact of environmental factors.

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Section: Introductionmentioning

confidence: 99%

Temporal and spatial changes of macrobenthos communities in south east shores of the Caspian sea

Javandel

Akhoundian²

2021

Nexo Revista Científica

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Variability of marine epifauna assemblages in response to the microhabitat type and thermal stress

Macias,

Hong,

Yang

et al. 2024

Regional Studies in Marine Science

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Impacts of thermal and cold discharge from power plants on marine benthos and its mitigation measures: a systematic review

Leng,

Mohamat-Yusuff,

Mohamed

et al. 2024

Front. Mar. Sci.

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IntroductionPower plants discharge thermal and cold effluents that significantly alter marine environments, impacting various organisms, including benthic communities. While thermal discharge has received considerable research attention, the impacts of cold discharge remain underexplored. This systematic review synthesizes existing research on the effects of power plant discharges on marine benthic ecosystems.MethodsA systematic literature search was conducted using Scopus, PubMed, and Web of Science, following PRISMA guidelines, covering studies from 1974 to 2024. A total of 58 articles were included in this review. CiteSpace was used to visualize trends, and statistical analysis was conducted to assess relationships between environmental parameters and changes in benthic abundance.ResultsA significant negative correlation was observed between temperature differentials, ambient temperature, and benthic abundance. Thermal discharge generally led to reduced benthic diversity and abundance, with occasional increases under low ambient temperatures. Cold discharge effects remain less documented, with evidence primarily focused on phytoplankton and fish. Additionally, dissolved oxygen, pH, and bottom sediment composition were significantly altered by power plant discharge. Detection and mitigation measures are crucial to managing these impacts. Mitigation measures include distributed discharge for cold effluents, advanced heat recovery systems, and careful site selection to minimize impacts on sensitive ecosystems. Long-term management and adaptive strategies are essential to reduce adverse effects and maintain ecological balance.DiscussionThermal discharges adversely impact marine benthic organisms by decreasing biodiversity and changing community structure, largely due to elevated temperatures and reduced oxygen levels. Cold discharges present unique challenges that require further research to fully understand their ecological impacts. Mitigation measures, such as distributed discharge for cold effluents and advanced heat recovery systems for thermal discharges, are essential to minimize the environmental impact of power plant operations.

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Variability in benthic invertebrate community structure near warm water effluents of a power plant in the southern Caspian Sea

Cited by 3 publications

References 39 publications

Temporal and spatial changes of macrobenthos communities in south east shores of the Caspian sea

Temporal and spatial changes of macrobenthos communities in south east shores of the Caspian sea

Variability of marine epifauna assemblages in response to the microhabitat type and thermal stress

Impacts of thermal and cold discharge from power plants on marine benthos and its mitigation measures: a systematic review

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