scholarly journals Distribution and composition of butterfly species along the latitudinal and habitat gradients of the Western Ghats of India

Check List ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1197 ◽  
Author(s):  
Anand Padhye ◽  
Sheetal Shelke ◽  
Neelesh Dahanukar

Distribution of butterfly species along the latitudinal and habitat gradients of the Western Ghats was studied. The Western Ghats was divided into 14 latitude zones and the species diversity in each latitude zone, along with habitats of their occurrence, were studied using the data from literature survey for the entire Western Ghats as well as data from personal observations in the areas between 14°N to 20°N latitudes. Out of 334 species recorded from the Western Ghats, 58 species were found in all latitudinal zones, while 5 species were reported in only one latitudinal zone. Further, southern Western Ghats consisted of more number of species and more number of genera as compared to northern Western Ghats. Latitudinal zones between 10°N to 12°N had most of the Western Ghats endemic species. Habitat wise distribution of species revealed three significant clusters grossly separated by the level of human disturbance. Evergreen forest habitats supported maximum number of species endemic to the Western Ghats.

2021 ◽  
Vol 13 (7) ◽  
pp. 18953-18955
Author(s):  
Perumal Murugan ◽  
Vellingiri Ravichandran ◽  
Chidambaram Murugan

Ophiorrhiza incarnata C.E.C.Fisch. (Rubiaceae), a threatened plant species of southern Western Ghats is rediscovered from the adjacent area of the type locality after lapse of eight decades.  Its distribution and conservation status are discussed.


2018 ◽  
Vol 10 (3) ◽  
pp. 1735-1752 ◽  
Author(s):  
Anbu Aravazhi Arunkumar ◽  
Arunachalam Manimekalan

Abstract. The Western Ghats of India is a UNESCO World Heritage Site and is one of the eight “hotspots” of biological diversity in the world. It is also referred to as the “Great Escarpment of India”. This paper provides information on the diversity of freshwater fish fauna of six river systems of the southern Western Ghats. The study area has been identified geographically using a GPS, and the respective topographic map has been digitized using ArcGIS software. The fish fauna were collected from various streams and rivers using cast nets, dip nets, gill nets and drag nets. Among the 31 georeferenced sites sampled from the rivers of the southern Western Ghats, a total of 64 species, belonging to 6 orders, 14 families and 31 genera, were recorded. Among them, the order Cypriniformes was dominant, with 3 families, 18 genera and 49 species (76.6 %). Principal component analysis and cluster analysis were performed to express the contribution of the variables and their influence on the species diversity. Interestingly, of the 31 sites, Thunakadavu stream, Gulithuraipatti, Athirapally, Naduthotam, Nadathittu, Mullaithodu, Thonanthikla, Noolpuzha and Sinnaru exhibited high variation in species diversity. Nearly 15 species were found to be threatened in the Western Ghats. Garra periyarensis and Cirrhinus cirrhosus are known to be vulnerable and Hemibagrus punctatus is critically endangered because of various anthropogenic activities. The study clearly indicates that certain timely measures have to be taken immediately to protect the fish fauna in the southern Western Ghats (https://doi.org/10.1594/PANGAEA.882214).


1996 ◽  
Vol 12 (2) ◽  
pp. 191-214 ◽  
Author(s):  
Jean-Pierre Pascal ◽  
Raphael Pelissier

ABSTRACTA permanent plot of 28 ha was established in a dense wet evergreen forest in the Western Ghats of India to study the functioning of the ecosystem. Since April 1990, 1981 trees of ≥30 cm gbh have been enumerated in a systematic sampling of five strips totalling 3.12 ha. This paper describes the main structural and floristic characteristics of the plot.The density (635 trees ≥30 cm gbh per hectare) and basal area (39.7 m2 ha−1) are high. Despite the high diversity (Simpson's D = 0.92 and Shannon's H' = 4.56), four species are distinctly, dominant in terms of an importance value index (relative density + relative basal area). Each of these four species occupies a different layer in the ecosystem: Humboldtia brunonis Wall. (Fabaceae) dominates the undergrowth, Myristica dactyloïdes Gaertn. (Myristicaceae) the intermediate strata, Valeria indica L. (Dipterocarpaceae) the higher canopy level and Dipterocarpus indicus Bedd. (Dipterocarpaceae) the emergents. This pronounced species hierarchy is one of the most important characteristics of the evergreen forests of the Western Ghats. The two dipterocarps account for 20.1% of the total number of trees and contribute 40.9% to the total basal area. This formation can, therefore, be considered as the westernmost lowland dipterocarp forest of Asia.Analysis of the spatial variations in the floristic composition and in the structure of the main species populations shows that two kinds of mature phases can be identified: where the topography is raised and gently sloping, the vertical structure of the stand is discontinuous, with Dipterocarpus indicus and Vateria indica forming an emergent layer above a dense undergrowth; on slopes, the stand is lower, vertically continuous and saturated with Valeria indica and Myristica dactyloïdes. The link between the structure of the stand and dynamic processes is discussed.


2021 ◽  
Vol 63 (1-2) ◽  
pp. 165-170
Author(s):  
C. N. Manju ◽  
B. Prajitha ◽  
R. Prakashkumar ◽  
W. Z. Ma

A new species similar to Bryocrumia vivicolor, the only known species in the genus Bryocrumia, is described as Bryocrumia malabarica spec. nova from the Malabar Wildlife Sanctuary in the Western Ghats of Kerala in Peninsular India. It resembles Homalia in external appearance and was collected in a rheophytic habitat along a stream channel in the evergreen forest. The new species is characterised by closely arranged leaves with distinct tricostate, ovate-rounded to truncate leaves, upper margin of leaf rounded with fine serrations and an inconspicuous central strand in stem cross section.


Phytotaxa ◽  
2019 ◽  
Vol 387 (4) ◽  
pp. 295
Author(s):  
SUBBIAH KARUPPUSAMY ◽  
VELLINGIRI RAVICHANDRAN

A new species of Luisia megamalayana (Orchidaceae) is described and illustrated from Megamalai Wildlife Sanctuary of southern Western Ghats of India.


2020 ◽  
Author(s):  
Remya L. Sundar ◽  
V.K. Anoop ◽  
Arya Sidharthan ◽  
Neelesh Dahanukar ◽  
Rajeev Raghavan

AbstractBhavania annandalei Hora 1920, is resurrected from the synonymy of B. australis (Jerdon 1849) based on examination of freshly collected topotypic specimens. The two species can be distinguished by a combination of morphological, morphometric and meristic characters, and by genetic distance using mitochondrial cox1 gene. The distribution of B. annandalei is restricted to the river systems draining the Agasthyamalai hills, below the Shencottah Gap in southern Western Ghats.


2018 ◽  
Vol 10 (8) ◽  
pp. 12027
Author(s):  
M. S. Syamili ◽  
P. O. Nameer

A study was conducted to evaluate amphibian diversity in selected agroecosystems of central Kerala within the southern Western Ghats of India, from January to May 2017.  A total of 10 anurans were recorded from cashew plantation, coconut plantation, homegarden and rubber plantation using a combination of quadrat sampling and visual encounter survey.  We recorded three species endemic to the Western Ghats: Minervarya keralensis, Pseudophilautus wynaadensis and Indosylvirana urbis from these agroecosystems.  Pseudophilautus wynaadensis is a threatened species with Endangered status as per the IUCN Red List.  The present study shows a strong relationship between the types of agroecosystems and abundance of different amphibian species.  This study highlights the potential of agroecosystems within and adjacent to the Western Ghats mountains to act as important abodes to conserve generalist species of amphibians and to provide a suitable habitat for threatened and endemic species. 


2018 ◽  
Vol 5 (4) ◽  
pp. 196-200 ◽  
Author(s):  
Sainudeen Muhammed Shareef ◽  
Ettickal Sukumaran Santhosh Kumar ◽  
Thankappan Shaju ◽  
R Prakashkumar

A new species of Eugenia L. (Myrtcaeae), viz. E. kalamii, is described and illustrated from the Western Ghats of India. It is morphologically allied to E. mooniana Wight, (Indo-Sri Lankan species) and E. wynadensis Bedd., (endemic species of southern Western Ghats).


PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3007 ◽  
Author(s):  
Sonali Garg ◽  
Robin Suyesh ◽  
Sandeep Sukesan ◽  
SD Biju

The Night Frog genusNyctibatrachus(Family Nyctibatrachidae) represents an endemic anuran lineage of the Western Ghats Biodiversity Hotspot, India. Until now, it included 28 recognised species, of which more than half were described recently over the last five years. Our amphibian explorations have further revealed the presence of undescribed species of Nights Frogs in the southern Western Ghats. Based on integrated molecular, morphological and bioacoustic evidence, seven new species are formally described here asNyctibatrachus athirappillyensissp. nov.,Nyctibatrachus manalarisp. nov.,Nyctibatrachus pulivijayanisp. nov.,Nyctibatrachus radcliffeisp. nov.,Nyctibatrachus robinmooreisp. nov.,Nyctibatrachus sabarimalaisp. nov. andNyctibatrachus webillasp. nov., thereby bringing the total number of validNyctibatrachus species to 35 and increasing the former diversity estimates by a quarter. Detailed morphological descriptions, comparisons with other members of the genus, natural history notes, and genetic relationships inferred from phylogenetic analyses of a mitochondrial dataset are presented for all the new species. Additionally, characteristics of male advertisement calls are described for four new and three previously known species. Among the new species, six are currently known to be geographically restricted to low and mid elevation regions south of Palghat gap in the states of Kerala and Tamil Nadu, and one is probably endemic to high-elevation mountain streams slightly northward of the gap in Tamil Nadu. Interestingly, four new species are also among the smallest known Indian frogs. Hence, our discovery of several new species, particularly of easily overlooked miniaturized forms, reiterates that the known amphibian diversity of the Western Ghats of India still remains underestimated.


Phytotaxa ◽  
2014 ◽  
Vol 188 (5) ◽  
pp. 282
Author(s):  
KONICKAL MAMBETTA PRABHU KUMAR ◽  
VADAKKOOT SANKARAN HAREESH ◽  
KOLLENCHERRI PUTHENVEETTIL VIMAL ◽  
INDIRA BALACHANDRAN ◽  
SHRIRANG RAMACHANDRA YADAV

The genus Chlorophytum Ker Gawler (1808: 1071) is one of the major genera of family Asparagaceae (APG 2009) with about 212 taxa (Kativu &a Nordal 1993, Govaerts et al. 2012). It is distributed in the Old World tropics especially in Africa and India (Mabberley 2005). It is represented by 17 species in India of which 15 occur in the Western Ghats (Malpure & Yadav 2009). Characters like anther filament ratio, anther filaments, number of tepal nerves, pedicel articulation and somatic chromosome number are taxonomically important (Adsul et al. 2014).


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