Characterization of fish community structure and an estuarine fish community index for temporarily closed estuaries (TCEs) from India’s south-western coast

Bella, Kiranya; Sahadevan, P; Bhavan, Sreekanth Giri; Kumar, Appukuttannair Biju; Raghavan, Rajeev

doi:10.1007/s11356-022-18631-2

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…The Poonthura Estuary (0.9 km 2 long and 0.1 km wide) is one of the most ecologically significant, and at the same time a polluted estuary in Thiruvananthapuram, Kerala (Kiranya et al 2022). The estuary is micro-tidal and partially mixed, with an average tidal range of 1.5 m, and separated from the Lakshadweep Sea by a sand bar at Poonthura.…”

Section: Study Areamentioning

confidence: 99%

“…Estuaries are transitional zones between sea and freshwater that are inhabited by both inland and marine species, including their juvenile stages (McLusky & Elliott 2006;Elliott et al 2007;Franco et al 2008;Potter et al 2010;Sreekanth et al 2018). Compared to marine or freshwater systems, estuaries are variable, complicated, and stressful habitats (Selleslagh & Amara 2008;Human et al 2016;Kiranya et al 2022). Many commercially important fish species benefit from the highly productive nature of estuaries as their nursery area (Harrison & Kelly 2013).…”

Section: Introductionmentioning

confidence: 99%

“…In Kerala, considerable number of studies have dealt with taxonomic entities within estuarine systems, i.e., species composition, species distribution, and abundance, and spatial and temporal variations in fish diversity (Bijukumar & Sushama 2000;Harikrishnan et al 2011;Regi & Bijukumar 2012;Kiranya et al 2018;Roshni et al 2021;Kiranya et al 2022), with many such studies concentrated on a single estuary, the Vembanad Lake (Kurup & Samuel 1987;Menon et al 2000;Harikrishnan et al 2011;Roshni et al 2021). There is considerable knowledge gap on the fish diversity and distribution patterns in many estuaries of Kerala, notably in the case of smaller systems such as Poonthura estuary, because of their isolated nature (Kiranya et al 2018(Kiranya et al , 2022. Considering this lacuna, the present study focuses on presenting a comprehensive checklist of fish and shellfish species of Poonthura estuary, along with their systematic position, and conservation status (according to the IUCN Red List).…”

Section: Introductionmentioning

confidence: 99%

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A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

et al. 2022

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A systematic checklist of fish and shellfishes of the Poonthura estuary, Kerala, India is provided including notes on their conservation status. This checklist includes 66 finfish and five shellfish, belonging to 17 orders, 35 families, and 60 genera. Carangiformes is the richest order (11 species, eight genera, and three families), representing 15.4% of the total fish diversity. Carangidae, is the most diverse family with nine representatives, contributing to 12.6% of the total fish diversity. Following the IUCN Red List Categories, of the total 69 species (excluding both exotic and transplanted fish species), 59 belong to the ‘Least Concern’, while one species Pampus argenteus is listed as ‘Vulnerable’, four are ‘Data Deficient’ (Megalops cyprinoides, Arius maculatus, Cynoglossus semifasciatus, and Epinephelus tauvina) and five are ‘Not Evaluated’ (Nuchequula blochii, Channa pseudomarulius, Penaeus indicus, P. monodon, and Scylla serrata). Around 94% of the recorded fish fauna have commercial value and contribute to subsistence fisheries throughout the year. Taxonomy and diversity of fish fauna of least studied or isolated estuarine ecosystems should be updated with proper documentation of their conservation status, in order to design and implement pragmatic management and conservation programs.

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Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

et al. 2022

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“…In estuary aquatic ecosystems, the multimetric index has been mainly used to evaluate the biological integrity of brackish water zones using target taxa. Kiranya et al [52] evaluated the health of temporarily closed estuaries in India using the Estuarine Fish Community Index (EFCI) and reported that the species abundance in the closed estuaries was lower compared to that in permanently opened estuaries and that species abundance was affected by the size, water depth, geographic location, river width of estuaries, and the duration of estuary opening [53][54][55]. In this study, ecological evaluation of closed and open estuaries by sea area was performed for the first time in the Korean Peninsula using the integrity index.…”

Section: Kefai (Korea Estuary Fish Assessment Index)mentioning

confidence: 99%

The Application of a Fish-Based Multi-Metric Index for the Assessment of Ecological Qualities of Estuaries in the Korean Peninsula

Kim

Choi

et al. 2022

Sustainability

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Brackish water zones are areas with high ecological conservation value. In this study, 325 river estuaries in the Korean peninsula in individual sea areas (West Sea, South Sea, and East Sea) were divided into types of estuaries (upstream and downstream of open estuaries, closed estuaries) through the assessment of the health of the estuary aquatic ecosystems and fish communities were identified. An ecological assessment was carried out using the Korea Estuary Fish Assessment Index (KEFAI). The number of species increased as the size of the river increased in the case of small estuaries but gradually decreased in the case of large estuaries. In the closed estuaries, the relative abundances (RAs) of primary freshwater fish were the highest; however, in the open estuaries, the RAs of estuary fish were the highest. Non-metric dimensional analysis results suggested that there was a clear difference between the fish assemblages in the closed and open estuaries. The overall results of this study were that the RA of tolerant species was higher, and KEFAI was lower in closed estuaries than in open estuaries, indicating the negative effects of the construction of transverse structures on fish assemblages. The health of these estuarine ecosystems can be improved by addressing these negative effects.

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Fish assemblage structure and functional guild composition of Matla Estuary, Indian Sundarbans

Bhutia,

Devadas,

Bella

et al. 2024

Aquat Sci

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Characterization of fish community structure and an estuarine fish community index for temporarily closed estuaries (TCEs) from India’s south-western coast

Cited by 13 publications

References 44 publications

A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

A checklist of fish and shellfishes of the Poonthura estuary, southwestern coast of India

The Application of a Fish-Based Multi-Metric Index for the Assessment of Ecological Qualities of Estuaries in the Korean Peninsula

Fish assemblage structure and functional guild composition of Matla Estuary, Indian Sundarbans

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