Biodiverse rotifer assemblage (Rotifera: Eurotatoria) of floodplain lakes of the Brahmaputra basin of lower Assam, northeast India: composition and ecosystem diversity

Sharma, B. K.; Khan, Shaikhul Islam; Sharma, Sumita

doi:10.1007/s00343-017-6251-x

Cited by 5 publications

(9 citation statements)

References 21 publications

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“…Importantly, Assam state of NEI, a part of the Indo-Myanmar biodiversity hotspot, merits attention as `the Assam-gateway' which is recognized as a unique phase in the biogeographic evolution of India (Mani 1974, Ranga Reddy 2013. Further, this state is characterized by the fluvial floodplain wetlands of the Brahmaputra and Barak Rivers; the former are hypothesized as globally rich rotifer habitats (Sharma & Sharma 2008, 2014b, Sharma et al 2018.…”

Section: Introductionmentioning

confidence: 99%

Thebiodiverse rotifers (Rotifera: Eurotatoria) of the floodplain wetlands of Barak valley of Assam, Northeast India

Sharma¹,

Sharma²

2019

Opusc Zool

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The present analysis of alpha diversity of Rotifera of the floodplain wetlands of Barak valley, south Assam, northeast India (NEI) reveals 170 species, belonging to 39 genera and 19 families, with three species new to the Indian sub-region and two species new to Assam state. The rich and diverse rotifer assemblages comprise ~70%, ~57% and ~39% of total species of the Phylum known till date from Assam, NEI and India, respectively and thus affirm habitat and ecological heterogeneity of the Barak River floodplain wetlands. The elements of global biogeographic importance include one Australasian, eight Oriental, 10 Paleotropical, one Indo-Chinese, one cosmo (sub) tropical and four other species, and ~37% species merit regional distribution interest for India with ~13% exclusively reported from NEI. Lecanidae (~30%) and Brachionidae ≈ Lepadellidae (~32%) largely contribute to the rotifer richness; Trichocercidae > Testudinellidae are notable (~15%), and Notommatidae, Euchlanidae, Mytilinidae, Trichotriidae and Trochosphaeridae collectively form 16.5%. Lecane is the most speciose genus; Lepadella > Brachionus = Trichocerca include ~32% species, while Testudinella > Keratella deserve mention. Rotifera of the Barak floodplains exhibit the littoral-periphytonic nature, several small sized species and tropical character.

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Section: Introductionmentioning

confidence: 99%

Thebiodiverse rotifers (Rotifera: Eurotatoria) of the floodplain wetlands of Barak valley of Assam, Northeast India

Sharma¹,

Sharma²

2019

Opusc Zool

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“…Thus, Q L/B < 1.0 indicates limnetic while 1.0 to 3.0 semi‐limnetic and >3.0 littoral‐periphytic habitats. In our study, the river was less than 1 m deep, and the Q L/B was 5.25 indicating that the study sites are shallow with mostly littoral‐periphytic taxa (Sharma et al, ).…”

Section: Discussionmentioning

confidence: 60%

“…Descy's diatom index (Phytoplankton) and Saprobic index (Rotifers) at the three sites in Amacuzac River and in lake Tequisquitengo during the study period semi-limnetic and >3.0 littoral-periphytic habitats. In our study, the river was less than 1 m deep, and the Q L/B was 5.25 indicating that the study sites are shallow with mostly littoral-periphytic taxa(Sharma et al, 2018).…”

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confidence: 52%

“…In this study too, of a total of 65 rotifer species, we found nine brachionids and 21 lecanids. Sharma et al () suggest that the quotient of Lecane to Brachionus indicates the nature of the habitat. Thus, Q L/B < 1.0 indicates limnetic while 1.0 to 3.0 semi‐limnetic and >3.0 littoral‐periphytic habitats.…”

Section: Discussionmentioning

confidence: 99%

“…Rotifers reach high densities, and sometimes a high diversity, in several lakes and reservoirs; true for several Mexican water bodies such as Lake Xochimilco (Nandini et al, 2016), Valle de Bravo reservoir FIGURE 5 Phytoplankton and rotifer species diversity index at the three sites in Amacuzac river and lake Tequisquitengo during the study period (Ramírez-García et al, 2002, andLlano reservoir (Muñoz-Colmenares, Sarma, &. Floodplain lakes, close to rivers also harbour a high diversity of rotifers (Neves, Rocha, Roche, & Pinto, 2003;Sharma, Khan, & Sharma, 2018). The density of rotifers in the rivers we have studied, including this one, is quite low in comparison with other rivers in the world (Burdis & Hoxmeier, 2011).…”

Section: Discussionmentioning

confidence: 99%

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Planktonic indicators of water quality: A case study in the Amacuzac River Basin (State of Morelos, Mexico)

Nandini

Ramı́rez-Garcı́a

Gutierrez-Ochoa

2019

River Research & Apps

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Planktonic organisms are good indicators of water quality but are rarely used in Mexican riverine studies in spite of the high level of contamination in these lotic waters. In this study, we focused on the plankton of the river Amacuzac in Mexico and a large saline waterbody, Lake Tequisquitengo, which is located in the Amacuzac river basin. We collected samples at three sites in the River Amacuzac and one at Lake Tequisquitengo from May 2015 to March–April of 2016. We analysed the physicochemical variables, coliform bacteria, and biological oxygen demand levels. We also quantified phytoplankton and zooplankton. Our results indicate that the study sites are mesotrophic with high densities of diatoms and cyanobacteria. Among the zooplankton, the dominant organisms were rotifers. The constancy of planktonic taxa was high in the lake but low in the river. The Descy index ranged from 2.9 to 4.5 in the river and from 4.0 to 5.0 in the lake. The saprobic index shows that the system is β‐mesosaprobic. The species diversity was higher in the river than in the lake. Our study shows that plankton can efficiently be used to evaluate the water quality in rivers and lakes.

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Evaluation of Water Quality Through Water Quality Index at Sorbhog Beel, a Critical Ecotone Along Indo-Bhutan Boundary

Baruah,

Baruah

2024

Water Air Soil Pollut

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Biodiverse rotifer assemblage (Rotifera: Eurotatoria) of floodplain lakes of the Brahmaputra basin of lower Assam, northeast India: composition and ecosystem diversity

Cited by 5 publications

References 21 publications

Thebiodiverse rotifers (Rotifera: Eurotatoria) of the floodplain wetlands of Barak valley of Assam, Northeast India

Thebiodiverse rotifers (Rotifera: Eurotatoria) of the floodplain wetlands of Barak valley of Assam, Northeast India

Planktonic indicators of water quality: A case study in the Amacuzac River Basin (State of Morelos, Mexico)

Evaluation of Water Quality Through Water Quality Index at Sorbhog Beel, a Critical Ecotone Along Indo-Bhutan Boundary

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