scholarly journals Endemic plants of tropical dry evergreen forest, Southern India

2018 ◽  
Vol 52 (1) ◽  
pp. 11-23
Author(s):  
Natesan Balachandran ◽  
Krishnamurthy Rajendiran ◽  
Walter Gastmans
Keyword(s):  
Endemic Species ◽  
Anthropogenic Disturbance ◽  
Tamil Nadu ◽  
The State ◽  
Southern India ◽  
Evergreen Forest ◽  
Peninsular India ◽  
Dry Evergreen Forest ◽  
Threat Status ◽  
Tropical Dry Evergreen Forest

Abstract During the last two decades of intensive botanical survey of the tropical dry evergreen forest, a total of 82 endemic taxa were found out of 1142 species enumerated from 85 sites in the three Coromandel Coastal districts of the state Tamil Nadu: Cuddalore, Kancheepurm and Villupuram, and in the Pondicherry district. Of 82 species, 17 are trees, 11 shrubs, 9 climbers and 45 herbs. Distribution of these endemic species was analyzed and categorised as endemic to the country, peninsular India, southern India, Eastern and Western Ghats, and at the state and district level. Interestingly, the study found that some endemic species were disjunctly distributed between districts, states, ghats, climatic regimes and bioregions. Anthropogenic disturbance and species threat status were also studied and discussed.

scholarly journals Endemic Vascular Plants from the Coromandel Coast of Tamil Nadu, Southern India

2020 ◽  
Author(s):  
Dhatchanamoorthy Narayanasamy ◽  
Balachandran Natesan
Keyword(s):  
Endemic Species ◽  
Tamil Nadu ◽  
Southern India ◽  
Evergreen Forest ◽  
Peninsular India ◽  
Dry Evergreen Forest ◽  
Threat Status ◽  
Reserve Forest ◽  
Tropical Dry Evergreen Forest ◽  
Union Territory

Intensive botanical survey was done more than two decades on Tropical Dry Evergreen Forest from four coastal districts viz. Cuddalore, Kancheepurm, Nagai and Villupuram of Tamil Nadu and Union Territory of Pondicherry. A total of 87 protected (hillocks, reserve forest) and unprotected (sacred groves, unclassified vegetation) sites were regularly studied from five districts. From this study 82 endemic taxa were enumerated. In addition 25 endemic species were added for the analysis through literature screening and herbarium consultation from 10 Coromandel coastal districts of Tamil Nadu. In all 107 species were recorded, among them 19 are trees, 18 shrubs, 9 climbers and 61 herbs. Distribution of these endemic species were analysed and categorised into endemic to the country, peninsular India, southern India, Eastern and Western Ghats, state and district level. Interestingly the study found that some endemic species were disjunctly distributed in between districts, states, ghats, climatic regimes and bioregions. The disturbance, threat status and conservation measures of few endemic and IUCN red listed species were also studied and discussed.

scholarly journals Angiosperms of Sendirakillai Sacred Grove (SSG), Cuddalore District, Tamil Nadu, India

Check List ◽  
2012 ◽  
Vol 8 (1) ◽  
pp. 113 ◽  
Author(s):  
G. Gnanasekaran ◽  
P. Nehru ◽  
D. Narasimhan
Keyword(s):  
Tamil Nadu ◽  
South India ◽  
Alpha Diversity ◽  
Evergreen Forest ◽  
Conservation Strategies ◽  
Sacred Grove ◽  
Peninsular India ◽  
Group Iii ◽  
Dry Evergreen Forest ◽  
Tropical Dry Evergreen Forest

We provide a checklist of Angiosperm alpha diversity of Sendirakillai Sacred Grove (SSG), a community conserved Tropical Dry Evergreen Forest (TDEF) fragment located on the Coromandel Coast of Cuddalore district (11°44’24” N, 79°47’24” E), Tamil Nadu, South India. Plant specimens were collected either with flowers or fruits and were identified and confirmed with available regional floras, revisions and monographs. In the present study, we have enumerated a total of 180 species and 2 varieties belonging to 151 genera distributed in 66 families from 29 orders according to Angiosperm Phylogeny Group III Classification. More than 30% of the total flora is represented by six families namely Fabaceae (14), Rubiaceae (12), Cyperaceae (10), Apocynaceae (8), Poaceae (8) and Euphorbiaceae (7). Three endemic species to India and three species that are confined to peninsular India and Sri Lanka are recorded from the sacred grove. Threats to the biodiversity of sacred grove are identified and conservation strategies are proposed.

A new species of rock-dwelling Cnemaspis Strauch, 1887 (Squamata: Gekkonidae) from Tamil Nadu, southern India

Zootaxa ◽  
2019 ◽  
Vol 4571 (3) ◽  
pp. 383
Author(s):  
AKSHAY KHANDEKAR
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Western Ghats ◽  
Tamil Nadu ◽  
Southern India ◽  
Peninsular India ◽  
Tamil Nadu State ◽  
The Rich ◽  
The Western Ghats ◽  
A New Species

A new species of the gekkonid genus Cnemaspis is described based on a series of nine specimens from near Sankari in Salem district, Tamil Nadu state, southern India. The new species is diagnosable by the following suite of characters: a small-sized Cnemaspis (adult snout to vent length less than 33 mm); heterogeneous dorsal pholidosis consisting of weakly keeled granular scales intermixed with large strongly keeled, conical tubercles, 9–11 rows of dorsal tubercles, 12–17 tubercles in paravertebral rows; spine-like scales absent on flank, 17–20 lamellae under digit IV of pes. Males with 4–6 femoral pores on each thigh, separated on either side by eight poreless scales from four precloacal pores; precloacal pores separated medially by a single poreless scale; two single dorsal ocelli on occiput and between forelimb insertions, two pairs of ocelli on either side just anterior and posterior to forelimb insertions. Cnemaspis agarwali sp. nov. is the fifth endemic species of Cnemaspis from peninsular India outside the Western Ghats and highlights the rich and unique diversity of this understudied region. 

scholarly journals Exploring the bacterial community composition of soil from a tropical dry evergreen forest in Tamil Nadu, India

2021 ◽  
Author(s):  
Saptashwa Datta ◽  
Melvin S. Samuel ◽  
Ethiraj Selvarajan
Keyword(s):  
Bacterial Community ◽  
Tamil Nadu ◽  
Bacterial Species ◽  
Bacterial Community Composition ◽  
Alpha Diversity ◽  
Amplicon Sequencing ◽  
Evergreen Forest ◽  
Dry Evergreen Forest ◽  
Tropical Evergreen Forest ◽  
Tropical Dry Evergreen Forest

Abstract Metagenomics is a cutting edge omics technology that has been employed in various fields including novel product discovery, diagnostics, and pollutant monitoring. 16S metagenome amplicon sequencing is used for understanding the microbial diversity from various environments. Forest ecosystems have been known for the discovery of novel bacteria and also bacteria that produces novel compounds that are pharmaceutically and industrially relevant. In this study we try to show the bacterial community structure of the soil obtained from a tropical evergreen forest in India. We use 16s metagenomics sequencing and then follow it up with various analysis like alpha diversity analysis, to find out the dominant bacterial species found in these soils. Actinobacteria was found to be the most copmmonly found bacterial phylum followed by proteobacteria, firmicutes, chloroflexi, acidobacteria, verrucomicrobia, bacteroidetes, gemmatimonadetes, nitospirae and other unclassified organisms. Further studies can elucidate on the discovery of novel compounds from these bacteria.

scholarly journals Angiosperms, Pachaiyappa’s College, Chennai, Tamil Nadu, India

Check List ◽  
2011 ◽  
Vol 7 (1) ◽  
pp. 037 ◽  
Author(s):  
Muthulingam Udayakumar ◽  
Muniappan Ayyanar ◽  
Thangavel Sekar
Keyword(s):  
Tamil Nadu ◽  
Life Form ◽  
Evergreen Forest ◽  
Number Of Species ◽  
Dry Evergreen Forest ◽  
Tamil Nadu State ◽  
Tropical Dry Evergreen Forest ◽  
Coromandel Coast

We provide a checklist of Angiosperms along with the details of life form from a ~ 9.6 ha of non-concreted area of Pachaiyappa’s College (PC) campus, Chennai, Tamil Nadu state, India. This area harbors 256 species belonging to 212 genera in 71 families. Families with maximum number of species include Fabaceae (31 species) followed by Malvaceae (15), Euphorbiaceae (13), Apocynaceae (12), Acanthaceae and Poaceae (11 each), Bignoniaceae and Rubiaceae (eight each) and Arecaceae, Moraceae, Rutaceae and Verbenaceae (seven each). The surveyed area represents a remnant of tropical dry evergreen forest (TDEF), as a substantial number of species collected in the present study belong exclusively to the Coromandel Coast (CC) TDEFs. PC is still preserving the biodiversity by means of strict rules and regulations enforced for the maintenance of the college premises.

scholarly journals Angiosperms, tropical dry evergreen forests of southern Coromandel coast, India

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 368 ◽  
Author(s):  
Muthulingam Udayakumar ◽  
Narayanaswamy Parthasarathy
Keyword(s):  
Forest Type ◽  
Anthropogenic Impacts ◽  
Evergreen Forest ◽  
Evergreen Species ◽  
Peninsular India ◽  
Evergreen Forests ◽  
Dry Evergreen Forest ◽  
Forest Sites ◽  
Tropical Dry Evergreen Forest ◽  
Coromandel Coast

We provide a check list of angiosperm plant species with their bioresource potential as medicinal plants enumerated from a total of seventy-five tropical dry evergreen forest sites along the Coromandel coast of peninsular India. These are poorly known sites even within Indian sub-continent and form an under-studied forest type. Tropical dry evergreen forests harbour 312 species belonging to 251 genera and 80 families. The families with the greatest numbers of species were Euphorbiaceae (20 species), Apocynaceae (18 species), Rubiaceae (15), Fabaceae (12), Mimosaceae (11) and Capparaceae and Asteraceae (10 each). Physiognomically evergreen species dominated the forest. Plant specimens are identified and confirmed using regional floras. These forests are conserved by the local people on religious ground as sacred groves, although they are also subjected to various levels of anthropogenic impacts.

scholarly journals Tree growth, mortality and recruitment in four inland tropical dry evergreen forest sites of Peninsular India

2017 ◽  
Vol 18 (4) ◽  
pp. 1646-1656
Author(s):  
ELUMALAI PANDIAN ◽  
NARAYANASWAMY PARTHASARATHY
Keyword(s):  
Tree Growth ◽  
Basal Area ◽  
Ground Level ◽  
Recruitment Rate ◽  
Tree Diversity ◽  
Evergreen Forest ◽  
Peninsular India ◽  
Dry Evergreen Forest ◽  
Forest Sites ◽  
Tropical Dry Evergreen Forest

Pandian E, Parthasarathy N. 2017. Tree growth, mortality and recruitment in four inland tropical dry evergreen forest sites of Peninsular India. Biodiversitas 18: 1646-1656. Tree diversity was re-inventoried after a decade (2003-2013) for assessing growth, mortality and recruitment rates in four inland tropical dry evergreen forest sites on the Coromandel Cost of India. Four 1-ha square plots (100 m x 100 m) were established in 2003 in four tropical dry evergreen forest sites, i.e. Araiyapatti (AP), Karisakkadu (KR), Maramadakki (MM) and Shanmuganathapuram (SP). These four plots were re-inventoried in 2013 to determine decadal changes in tree diversity. All trees ≥10 cm girth at breast height (gbh) were measured at 1.3 m from the ground level. The initial inventories in 2003 recorded 57 tree species, whereas, in 2013, 56 species were recorded from 46 genera and 26 families. Tree basal area declined by 6.2 % and 3.4 % in sites KR and SP respectively, whereas in the other two sites it increased; AP (1.6 %) and MM (16.8 %). The mean growth rate of trees (≥ 10 cm gbh) in four tropical dry evergreen forest sites ranged from 0.68 to 1.52 cm yr-1. High recruitment rate was recorded in less disturbed sites KR (21.8 % yr-1) and MM (11.5 % yr-1), while the moderately disturbed sites showed 9.1% yr-1in site AP and 5.1 % yr-1 in site SP. Mortality rates were 23.5 and 45.7% yr-1 in highly disturbed sites AP and SP respectively.

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