Coastal caves on the Interview Island of Andaman Islands, India

Kawalkar, Dhanusha; Manchi, Shirish

doi:10.1007/s13146-020-00646-w

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Tectonism has led to fractures in both igneous and sedimentary rock groups, creating pathways for groundwater flow in deeper horizons. The geological composition of the islands exhibits remarkable diversity and can change significantly over short distances [37][38].…”

Section: Geologymentioning

confidence: 99%

Hydrogeochemical characterization and water quality evaluation for drinking and irrigation purposes of coastal aquifers of Middle Andaman

Kumar,

Vishwakarma,

Singh

et al. 2024

Preprint

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A comprehensive study to characterize the hydrogeochemistry of the region and the impact of saltwater intrusion on groundwater was conducted along the eastern coast of Middle Andaman of Andaman and Nicobar (A&N) Islands. The escalating population growth and intensified tourism activities have resulted in the over-extraction of groundwater. Seismic activities led to the opening of lineaments to the sea and dissolution of limestone in influence of seawater. 24 groundwater samples and 1 reference sample from sea were taken from various locations of middle Andaman. The analysis involved the determination of major cations, anions, and heavy metals using ICP, spectrophotometry, and flame photometry. Furthermore, X-ray diffraction analysis, binary diagrams, Chloro-alkaline indices (CAI), Gibbs Plot, correlation matrix, Piper plot, Chadha's plot and Principal Component Analysis (PCA) to the major ions data indicated rock-water interactions, strong correlations among alkali and alkaline earth metals, and interactions between seawater and carbonate minerals respectively. The water quality index indicated “very poor to unsuitable for drinking purposes” in 24% of the samples. Additionally, indices for irrigation suitability; total hardness (TH), residual sodium carbonate (RSC), and Magnesium adsorption ratio (MAR) were found to be detrimental for irrigation in 80%, 08%, and 12% of the water samples, respectively.

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Section: Geologymentioning

confidence: 99%

Hydrogeochemical characterization and water quality evaluation for drinking and irrigation purposes of coastal aquifers of Middle Andaman

Kumar,

Vishwakarma,

Singh

et al. 2024

Preprint

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“…We randomly noted temperature and relative humidity using handheld environment meter (Kestrel 3000) inside the caves during various visits. Using a standard survey method (Ford & Cullingford, 1976;Kawalkar & Manchi, 2020) and Leica Distometer S910, we recorded the morphometric measurements of the study caves to estimate the Cave Length (CL), Ceiling Surface Area (CSA), Wall Surface Area (WSA), Floor Area (FA) and Cave Volume (CV).…”

Section: Study Areamentioning

confidence: 99%

Distribution of crickets (Subfamily: Phalangopsinae) in caves of Baratang Island, Andaman and Nicobar Islands, India

Dhamorikar¹,

Kawalkar²,

Manchi³

2020

IJS

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Cave-dwelling organisms share different ecological and evolutionary relationships with caves. Based on these interactions, they are categorized as troglobites, troglophiles, and trogloxenes. In India, caves are meagerly explored, and thus cave study is in its infancy in India. Through the present study, we attempted to understand and model the distribution of crickets (Family Phalangopsidae), a critical group of insects - being the primary consumers in the cave ecosystems. We sampled seven caves using belt transects (N = 184; total area covered = 1294.9 m2) with 1 m width. During the survey, we encountered 818 individual crickets (116.85 ± 47.16 SD per cave). Of these, 87.7% encounters were on walls, 7.09% were on the ceiling, and 5.13% were on the cave floor. We used the Single-species Multi-season occupancy model to calculate the overall, zone-wise, and cave-specific occupancy. Cricket occupancy in Baratang caves is seasonal and highly zonal, with detectability ≤1. The cave with less distinct zones has more consistent occupancies and zero chances of extinction and colonization. Hence, these caves serve as suitable habitat for the source population. A negative correlation of cave morphometric features (cave volume, wall surface area, and floor surface area), and density of crickets (p < 0.05), might need further validation. The study shows the need for detailed studies regarding cricket taxonomy and ecology towards establishing the conservation importance of the species and their habitat in the islands.

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“…With dominating tropical evergreen and semi-evergreen forests, the Island arc possesses 395 limestone caves, of which 62.2% are situated in the inland area and 37.8% on the coast (Manchi 2014). Interview Island in the west of the Middle Andaman Islands, the only identified carbonate island, is the largest Wildlife Sanctuary (134 km 2 ) of the archipelago (Kawalkar & Manchi 2020). This uninhabited and scarcely explored karst island has 34 known limestone caves (Manchi 2014).…”

Section: Introductionmentioning

confidence: 99%

A new species of Caridina H. Milne Edwards, 1837 (Family: Atyidae) from a limestone cave on Interview Island, Andaman and Nicobar Islands, India

Vijayamma

Dhamorikar

Manchi

2021

Zootaxa

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Caridina ravisankarani sp. nov. is a cave-adapted species, collected during June and November 2018 and January 2019 from a limestone cave (CN2) on Interview Island, Andaman and Nicobar Islands. The shrimps were collected from a stream, sourced through the percolation of rainwater, which reduces during the post-monsoon months. The species is closely related to Caridina typus H. Milne Edwards, 1837, Caridina villadolidi Blanco, 1939 and Caridina jeani Cai, 2010. A detailed comparison of characters and a key for identification are given in the text. The present species can be diagnosed by the presence of: short rostum with edentulous upper margin and ventral margin with 2 minute teeth situated at the distal part; outer antennular flagellum with 16 segments at the basal part swollen; highly atrophied propodus and dactylus of endopod of 2nd maxilliped; bushy long setae on fingers of 2nd chelate legs; dactylus of 5th pereopod with 42–43 comb-like bristles; dieresis with 18 spines; dorsal surface of telson with 4–5 pairs of spines and disto-median region doesn’t end in a point, outer lateral pair of spines absent and eyes with cornea pigmentation variable, from totally absent to a small black spot. Fecundity is 1300 eggs with an average length 0.71±0.03 mm and width 0.42±0.03 mm (Mean±SD).

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Coastal caves on the Interview Island of Andaman Islands, India

Cited by 5 publications

References 22 publications

Hydrogeochemical characterization and water quality evaluation for drinking and irrigation purposes of coastal aquifers of Middle Andaman

Hydrogeochemical characterization and water quality evaluation for drinking and irrigation purposes of coastal aquifers of Middle Andaman

Distribution of crickets (Subfamily: Phalangopsinae) in caves of Baratang Island, Andaman and Nicobar Islands, India

A new species of Caridina H. Milne Edwards, 1837 (Family: Atyidae) from a limestone cave on Interview Island, Andaman and Nicobar Islands, India

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