Merremia umbellata ssp. orientalis (Hallier f.) Ooststr. - A New Addition to Indian Convolvulaceae from Andaman Islands, India

2019 ◽  
Vol 42 (2) ◽  
pp. 119-122
Author(s):  
Lal Ji Singh ◽  
◽  
Mudavath Chennakesavulu Naik ◽  
Keyword(s):  
Andaman Islands ◽  
The South ◽  
Flora Of India ◽  
South Andaman

Merremia umbellata subsp. Orientalis (Hallier f.) Ooststr. is reported as new distributional record for the flora of India from the South Andaman Islands. Updated nomenclature, brief description, phenology, distribution along with field photographs and illustrations are provided.

scholarly journals Reappearance of the rare Shingle Urchin Colobocentrotus (Podophora) atratus (Camarodonta: Echinometridae) after eight decades from the rocky shore of Kodiyaghat (Port Blair), South Andaman Islands, India

2016 ◽  
Vol 8 (11) ◽  
pp. 9377 ◽  
Author(s):  
Vikas Pandey ◽  
T. Ganesh
Keyword(s):  
Coastal Waters ◽  
Marine Species ◽  
Iucn Red List ◽  
Andaman Islands ◽  
The South ◽  
South Andaman ◽  
Sparse Population ◽  
Initial Description ◽  
Iucn Red List Criteria ◽  
Available Information

The present work is aimed at facilitating conservation efforts of a rare species of sea urchin (Colobocentrotus atratus) reported nearly eight decades after its initial description by Bell (1887) and later by Clarke (1925) from the coastal waters of south Andaman Islands. Recently, during a three years study (2011-14) on the macrobenthic epifauna along the south Andaman coast, five live specimens of C. atratus were recorded from Kodiyaghat (11031'532''N; 092043'457'' E), south Andaman Islands. Available information shows that this species has reappeared in the south Andaman Islands seventy nine years after the citation by Sastry (1994) collected in the year 1935. The disappearance of this species from the literature in the intermittent years and a sparse population in coastal reaches of south Andaman Islands at present suggest that this species makes a candidate taxa for inclusion in the list of ‘endangered’ or ‘vulnerable’ Indian marine species following IUCN Red List criteria to Wild species.

Occupancy and Population Abundance of Two Serpent-Eagles (Spilornis elgini and S. cheela) In the Andaman Islands, India

2021 ◽  
Author(s):  
Shirish S. Manchi ◽  
Dhanusha Kawalkar ◽  
Shivkumari Patel ◽  
Sayli Sawant
Keyword(s):  
Detection Probability ◽  
Single Species ◽  
Occupancy Modeling ◽  
Population Abundance ◽  
Andaman Islands ◽  
Coastal Forests ◽  
The South ◽  
The North ◽  
South Andaman ◽  
Species Occupancy

ABSTRACT We estimated occupancy and population abundance of the Andaman Serpent-Eagle (Spilornis elgini) and Crested Serpent-Eagle (Spilornis cheela) in the Andaman Islands, India. We divided the islands that were > 100 km2 into a grid of 84 cells, of which we used 34 cells (5 km × 5 km each) for surveys of two populations in the districts of (1) the North and Middle Andaman Islands, and (2) the South Andaman Islands, which includes Little Andaman Island. We performed single-season, single-species occupancy modeling independently for both regions and single-season, two-species occupancy modeling for co-occupancy in the surveyed landscapes. The estimated abundance for the Andaman Serpent-Eagle and the Crested Serpent-Eagle was 4–5 and 7–8 individuals per 25 km2, respectively. The Andaman Serpent-Eagle is commonly distributed in both regions and has a high detection probability (detection probability, P = 0.8). The Crested Serpent-Eagle is widely distributed in the South Andaman Islands with a low detection probability (P = 0.5). The single-season, two-species occupancy model showed that the endemic Andaman Serpent-Eagle occupied only 22% of the area and did not co-occur with the Crested Serpent-Eagle. It also indicates the possible avoidance or exclusion of the Crested Serpent-Eagle by the Andaman Serpent-Eagle. We encountered both serpent-eagles in all the identified habitat types. The Crested Serpent-Eagle's habitat use was not restricted to the coastal forests, as previously reported, and the Crested Serpent-Eagle is probably dominating the Andaman Serpent-Eagle in the co-occupied areas. We further conclude that the occupancy dynamics and competition for space between these two Spilornis species might significantly affect the distribution and population of the vulnerable and endemic Andaman Serpent-Eagle in the future.

Palynodiversity in the Climbers of Andaman Islands, India

2016 ◽  
Vol 39 (2) ◽  
pp. 125-131
Author(s):  
Mudavath Naik ◽  
J. Kailas ◽  
H. Ramakrishna ◽  
Boyina Rao
Keyword(s):  
Morphological Characters ◽  
Andaman Islands ◽  
Andaman Island ◽  
South Andaman

The present investigation deals with the study of pollen diversity of forty one climbers of forests in South Andaman Island. These 41 taxa belong to diversified families viz. Acanthaceae, Apocynaceae, Asteraceae, Capparaceae, Combretaceae, Convolvulaceae, Cucurbitaceae, Euphorbiaceae, Fabaceae, Hernandiaceae, Lauraceae, Passifloraceae, Polygonaceae, Malvaceae, Rhamnaceae, Rubiaceae and Sapindaceae. The pollen of these taxaare diversified in morphological characters viz., symmetry, shape, polarity, apertural pattern and ornamentation.

Changing trend in the seroprevalence and risk factors of human leptospirosis in the South Andaman Island, India

2018 ◽  
Vol 65 (6) ◽  
pp. 683-689 ◽  
Author(s):  
Ratchagadasse Vimal Raj ◽  
Kirubakaran Vinod Kumar ◽  
Chandan Lall ◽  
Kumaresan Vedhagiri ◽  
Attayur Purushothaman Sugunan ◽  
...  
Keyword(s):  
Risk Factors ◽  
The South ◽  
Andaman Island ◽  
Human Leptospirosis ◽  
Changing Trend ◽  
South Andaman

Multivariate and geo-spatial approach for seawater quality of Chidiyatappu Bay, south Andaman Islands, India

2015 ◽  
Vol 96 (1-2) ◽  
pp. 463-470 ◽  
Author(s):  
Dilip Kumar Jha ◽  
Nambali Valsalan Vinithkumar ◽  
Biraja Kumar Sahu ◽  
Palaiya Sukumaran Dheenan ◽  
Apurba Kumar Das ◽  
...  
Keyword(s):  
Andaman Islands ◽  
Spatial Approach ◽  
South Andaman ◽  
Seawater Quality

scholarly journals In search of language contact between Jarawa and Aka-Bea: The languages of South Andaman

1970 ◽  
Vol 72 ◽  
pp. 40
Author(s):  
Anvita Abbi ◽  
Pramod Kumar
Keyword(s):  
Language Contact ◽  
Special Kind ◽  
Similarity Judgment ◽  
Andaman Islands ◽  
Hunter Gatherers ◽  
The Past ◽  
Endangered Language ◽  
Loan Word ◽  
South Andaman ◽  
Lexical Items

The paper brings forth a preliminary report on the comparative data available on the extinct language Aka-Bea (Man 1923) and the endangered language Jarawa spoken in the south and the central parts of the Andaman Islands. Speakers of Aka-Bea, a South Andaman language of the Great Andamanese family and the speakers of Jarawa, the language of a distinct language family (Abbi 2006, 2009, Blevins 2008) lived adjacent to each other, i.e. in the southern region of the Great Andaman Islands in the past. Both had been hunter-gatherers and never had any contact with each other (Portman 1899, 1990). The Jarawas have been known for living in isolation for thousands of years, coming in contact with the outside world only recently in 1998. It is, then surprising to discover traces of some language-contact in the past between the two communities. Not a large database, but a few examples of lexical similarities between Aka-Bea and Jarawa are investigated here. Words for comparison are selected from the Automated Similarity Judgment Programme-list ASJP (Holman et al. 2008, Brown et al. 2007, 2008, Wichmann 2010) as well as from the Loan Word Typology research (Haspelmath and Tadmor 2009). Although we have data only for 100 items, we further compared the lexical items against the Swadesh list (1955) (see appendix 5). The result achieved exposes for the first time, the possibility of language contact between Aka-Bea and Jarawa in the past. We pose a very relevant question here: can enmities and rivalries induce changes in languages which can be ascribed to contact of a very special kind? We conclude by claiming that prototypical least borrowable lexical items can also be borrowed in a very specific context despite the absence of interactive communication between the two communities.

scholarly journals A new species of dewflower Murdannia sanjappae (Commelinaceae) from Andaman Islands, India

2017 ◽  
Vol 9 (11) ◽  
pp. 10909 ◽  
Author(s):  
Mudavath Chennakesavulu Naik ◽  
Boyina Ravi Prasad Rao
Keyword(s):  
New Species ◽  
Novel Species ◽  
Andaman Islands ◽  
South Andaman ◽  
A New Species

Murdannia sanjappae, a new species of dewflower plant of the dayflower family from Rutland Island, South Andaman Islands, India, is described and illustrated.  This novel species is similar to M. tenuissima in not having any staminodes, but differs from it by having oblong-lanceolate leaves with cordate base, distinct peduncle, pedicel with 2–3 articulations, ovate petals, and 24–30-seeded capsules.

scholarly journals Observations on the female flowers and fruiting of Tape Grass Enhalus acoroides from South Andaman Islands, India

2019 ◽  
Vol 11 (5) ◽  
pp. 13617-13621
Author(s):  
Vardhan Patankar ◽  
Tanmay Wagh ◽  
Zoya Tyabji
Keyword(s):  
Life Cycle ◽  
National Parks ◽  
Monitoring Program ◽  
Average Density ◽  
Andaman Islands ◽  
Seagrass Meadows ◽  
Enhalus Acoroides ◽  
South Andaman ◽  
The Mean

Documenting phenologic events is crucial in obtaining deeper insights into the life cycle of seagrasses.  We documented and compared the flowering and fruiting of the seagrass Enhalus acoroides from multispecies seagrass meadows at two sites, Henry Lawrence and Tarmugli islands located inside the marine national parks in South Andaman Islands.  At these two locations, the average density of shoots ranged between 30.9/m2 and 18.16/m2, fruits between 5/m2 and 2.33/m2, and flowers between 6.7/m2 and 3.83/m2, whereas the mean length of the peduncles ranged from 40.59cm at Henry Lawrence to 32.44cm at Tarmugli Island.  We observed significant differences between the densities of shoots and fruits and peduncle lengths in the two sites.  The density of flowers, however, did not vary significantly.  These observations of fruiting and flowering in E. acoroides establish an important reproductive stage in the life cycle of the species and open avenues for further seagrass research in the Andaman Islands.  We describe the findings and emphasize on the need to establish a long-term phenology monitoring program for E. acoroides in the Andaman Archipelago.

Sign in / Sign up

Export Citation Format

Share Document