scholarly journals Angiosperms, climbing plants in tropical forests of southern Eastern Ghats, Tamil Nadu, India

Check List ◽  
2009 ◽  
Vol 5 (1) ◽  
pp. 092 ◽  
Author(s):  
Chellam Muthumperumal ◽  
Narayanaswamy Parthasarathy

We provide a check list of angiosperm climbing plant species, along with their climbing modes, enumerated from a total of one hundred and fifty grids in tropical forests of southern Eastern Ghats, peninsular India. The Eastern Ghats constitute an important biodiversity area in India and have been studied earlier mainly for the floristics, and that too confined to a few prioritized sites. Lianas, the woody vines contribute substantially to the diversity and structure of most tropical forests. Yet, little is known about the importance of habitat specialization in maintaining tropical liana diversity. A genera and 40 families are included in this enumeration.

2006 ◽  
Vol 143 (2) ◽  
pp. 195-212 ◽  
Author(s):  
C. LEELANANDAM ◽  
K. BURKE ◽  
L. D. ASHWAL ◽  
S. J. WEBB

Peninsular India was assembled into a continental block c. 3 million km2 in area as a result of collisions throughout the length of a 4000 km long S-shaped mountain belt that was first recognized from the continuity of strike of highly deformed Proterozoic granulites and gneisses. More recently the recognition of a variety of tectonic indicators, including occurrences of ophiolitic slivers, Andean-margin type rocks, a collisional rift and a foreland basin, as well as many structural and isotopic age studies have helped to clarify the history of this Great Indian Proterozoic Fold Belt. We here complement those studies by considering the occurrence of deformed alkaline rocks and carbonatites (DARCs) in the Great Indian Proterozoic Fold Belt. One aim of this study is to test the recently published idea that DARCs result from the deformation of alkaline rocks and carbonatites (ARCs) originally intruded into intra-continental rifts and preserved on rifted continental margins. The suggestion is that ARCs from those margins are transformed into DARCs during continental, or arc–continental, collisions. If that idea is valid, DARCs lie on rifted continental margins and on coincident younger suture zones; they occur in places where ancient oceans have both opened and closed. Locating sutures within mountain belts has often proved difficult and has sometimes been controversial. If the new idea is valid, DARC distributions may help to reduce controversy. This paper concentrates on the Eastern Ghats Mobile Belt of Andhra Pradesh and Orissa, where alkaline rock occurrences are best known. Less complete information from Kerala, Tamil Nadu, Karnataka, West Bengal, Bihar and Rajasthan has enabled us to define a line of 47 unevenly distributed DARCs with individual outcrop lengths of between 30 m and 30 km that extends along the full 4000 km length of the Great Indian Proterozoic Fold Belt. Ocean opening along the rifted margins of the Archaean cratons of Peninsular India may have begun by c. 2.0 Ga and convergent plate margin phenomena have left records within the Great Indian Proterozoic Fold Belt and on the neighbouring cratons starting at c. 1.8 Ga. Final continental collisions were over by 0.55 Ga, perhaps having been completed at c. 0.75 Ga or at c. 1 Ga. Opening of an ocean at the Himalayan margin of India by c. 0.55 Ga removed an unknown length of the Great Indian Proterozoic Fold Belt. In the southernmost part of the Indian peninsula, a line of DARCs, interpreted here as marking a Great Indian Proterozoic Fold Belt suture, can be traced within the Southern Granulite Terrain almost to the Achankovil-Tenmala shear zone, which is interpreted as a strike-slip fault that also formed at c. 0.55 Ga.


2020 ◽  
Vol 12 (4) ◽  
pp. 15436-15442
Author(s):  
S.R. Ganesh ◽  
N.S. Achyuthan

We describe a new species of shieldtail (uropeltid) snake, Uropeltis rajendrani sp. nov., from the Kolli Hill complex of the southern Eastern Ghats in Tamil Nadu, India.  The new species belongs to the U. ceylanica group and is differentiated from related species in having 16–17:16–17:15–16 dorsal scale rows; 145–158 ventral scales; 8–11 pairs of subcaudals; dorsum uniform brown, anteriorly powdered with yellow mottling; venter brown, scales outlined with yellow.  This endemic species with a restricted range is known only from atop Kolli Hill complex, inhabiting higher elevation (> 900m) evergreen forests, where it is the only known member of this genus. Allopatric species, endemism, isolated massif, Uropeltis rajendrani sp. nov., Western Ghats. 


2020 ◽  
Vol 9 (2) ◽  
Author(s):  
E. Pandian ◽  
P. Ravichandran

Investigated the distribution of climber and its conservation status in tropical forests of Courtallam hills in southern Western Ghats of Tamil Nadu, India during 2017-2018. A total of five 1 ha plots were established, and all climber species ≥1 cm diameter at breast height (dbh) were counted, which resulted in a total of 81 climbing plant species that representing to 62 genera under 30 families. Study plots revealed the most abundant climber species are Jasminum flexile (Oleaceae), Salacia oblonga (Celastraceae) and Ziziphus oenopolia (Rhamnaceae). The dominant climber species families in the study plots include Apocynaceae (11 species), Leguminosae (10 species), Menispermaceae and Vitaceae (6 species each), Capparaceae and Oleaceae (5 species each) and Convolvulaceae (4 species). Among 81 climber species, about 12 species are documented as threatened species of Courtallam hills. The results of this investigation suggest that forest management and forest protection is important for in-situ conservation of liana diversity with the involvement of local community.


2014 ◽  
Vol 6 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Maradana TARAKESWARA NAIDU ◽  
Owk ANIEL KUMAR ◽  
Malleboyina VENKAIAH

Lianas are important in forest ecosystem and strongly influence the forest dynamics and diversity. Lianas are common in the tropical moist deciduous and rain forests, which are competing with other forest trees. Little information is known on the habitat specialization in tropical lianas diversity and the root causes for variation among forests in liana species composition. A total of 170 liana species (≥ 1.5 cm girth at breast height) representing 109 genera and 43 families were reported in 5×5 m quadrate samples along with their climbing modes in the tropical forests of northern Eastern Ghats of Andhra Pradesh, India. A total of 210 grids were sampled in study area and reported that Convolvulaceae was the dominant family with 23 species followed by Papilionaceae, 22 species and Asclepiadaceae, 19 species and Ipomoea was the largest genera. Woody lianas were dominated by 128 species and these are classified into six climbing modes consisting in stem climbers (53.5%) that were the most predominant followed by stragglersunarmed (14.7%), stragglers armed and tendril climbers (13.5% each), root climbers (2.9%) and hook climbers (1.8%). The most dominant liana species in the northern Eastern Ghats were Acacia sinuata and Bauhinia vahlii. The results of this investigation suggests that better management and protection is an important for in situ conservation of liana diversity and involving local people is emphasized.


2021 ◽  
pp. 28-35
Author(s):  
R. Prabakaran ◽  
T. Senthil Kumar

The present study was aimed to document the ethnomedicinal knowledge among the Malayali tribal of Chitteri hills Eastern Ghats of Tamil Nadu, India. Field visits were made to the Chitteri hills every month covering all seasons. Interviews with traditional healers and other knowledgeable inhabitants and farmers were conducted. The Malayali tribal people of Chitteri hills use 320 plant species for their day-to-day life, this ethnobotanical exploration revealed they were the habit of using around 216 species of medicinal plants belonging to 200 genera under 45families. Malayali tribes use morphological characters such as bark surface, leaf colour, leaf taste and exudates, underground plant parts and ecology of species as criteria for identification of 135 species belongs to 105 genera under 46 families. The documentation of the knowledge of Malayali tribal identification of plants of Chitteri hills is to be accorded top priority in the preservation of our ancient traditional knowledge.


2019 ◽  
Vol 42 (2) ◽  
pp. 199-200
Author(s):  
N. Dhatchanamoorthy ◽  
◽  
N. Balachandran ◽  

Phyllanthus simplex var. gardnerianus (Phyllanthaceae) is a very rare and little-known plant of the peninsular India. It is recorded for the first time for Eastern Ghats of Tamil Nadu. Detailed description with colour photographs are provided in this communication.


Author(s):  
G. PRABAKARAN, D. ANANDHA KUMAR ◽  
R. PUGALVENDHAN, M. MURALI

Flora and fauna diversities are two facts components of biodiversity which covers the variety and variability of species. A survey was conducted to study the rare plants of chitteri hills, Tamil Nadu, India. 96 Plants Belonging to 48 Family, 90 Genus and 96 species were Documented Plants totally were under thorough investigation. Of these monocots are represented by 7 species belonging to 7 genera and 4 families, while dicot contributed by 87 species belonging to 82 genera and 39 families, Ferns 2 families and 2 genera, Fungi 1 family and 1 Genera. Plant species were recorded and identified during the survey. The results show that the habitat of plants belongs to herbs, shrubs and tree species. But, we have observed only minimum tree species. Of these monocots are represented by 7 species belonging to 7 genera and 4 families, while dicots contributed by 87 species belonging to 82 genera and 39 families, Ferns 2 families and 2 genera, Fungi 1 family and 1 Genera. The study decipts that Chitteri Hills have different variety of plants distributed all over the mountain.


Check List ◽  
2009 ◽  
Vol 5 (3) ◽  
pp. 542 ◽  
Author(s):  
Lingassamy Arul Pragasan ◽  
Narayanaswamy Parthasarathy

We provide a list of tree species enumerated from a total of 60 ha area sampled in the tropical forests of southern Eastern Ghats, Tamil Nadu, India. A total of 272 tree species (Ā 30 cm girth at breast height) representing 181 genera and 62 families were recorded. Euphorbiaceae with 25 species was the most speciose family, followed by Moraceae (17 species), Rubiaceae (17), Rutaceae (14) and Lauraceae (12). At the generic level, Ficus dominated with 12 species, followed by Diospyros (9), Acacia (6), Terminalia (6) and Grewia (5). Anthropogenic activities such as hill cultivation, construction of dams, roads, buildings, etc. affect the already fragmented southern Eastern Ghats, and underline the need for effective conservation measures. 


Zootaxa ◽  
2021 ◽  
Vol 4950 (2) ◽  
pp. 361-376
Author(s):  
S. R. GANESH ◽  
ACHYUTHAN N. SRIKANTHAN ◽  
AVRAJJAL GHOSH ◽  
OMKAR DILIP ADHIKARI ◽  
SHREE VARSHA VIJAY KUMAR ◽  
...  

We describe a new species of Asian gracile skink from the dry leeward slopes of the Nilgiri hills, Tamil Nadu state, India which forms a part of the eastern, rain shadow escarpment of the Western Ghats in peninsular India. The new species, Subdoluseps nilgiriensis sp. nov., is characterized by: slender, small-sized body (47–67 mm); sandy brown above, with each scale tipped with black; a thick black lateral band from snout to tail; a distinct white labial streak; dirty white venter, with throat having mild black striations; 28–29 midbody scale rows; 71–74 mid ventral scales; 66–69 paravertebral scales. The new species is described based on external morphological characters, genetic data and geographical isolation. Based on two mitochondrial DNA genes, we show that the new species shares a sister relationship with Subdoluseps pruthi (Sharma, 1977) which is found in parts of the Eastern Ghats in peninsular India. The discovery of this new population raises two novel scenarios. Firstly, it renders the genus Subdoluseps evolutionarily polyphyletic with respect to the Indian species included in this genus. Secondly, it falsifies the notion that S. pruthi group skinks are restricted to the Eastern Ghats. Our results further indicate that the dry zone of peninsular India has unrealized skink diversity that needs to be further explored. 


2016 ◽  
Vol 1 (1) ◽  
Author(s):  
A.K. Asthana ◽  
Priyanshu Srivastava

Eastern Ghats are discontinuous hill ranges passing through Orissa, Andhra Pradesh and Tamil Nadu located between 11⁰30' & 22⁰N latitude and 76⁰50' & 86⁰30'E longitude. Bryophyte flora of this region is still very less explored. During a recent field exploration to Eastern Ghats region of Tamil Nadu three moss taxa viz. Solmsiella biseriata (Austin) Steere, Aulacopilum glaucam Wilson and Groutiella tomentosa (Hornsch) Wijk & Marg. have been identified as new additions to moss flora of Eastern Ghats. The present study provides the information regarding extended range of distribution of these taxa in India and a compensable account of morpho-taxonomical details with earlier described taxa from other bryogeographical zones.


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