Ant pollination of Syzygium occidentale, an endemic tree species of tropical rain forests of the Western Ghats, India

Abstract:The effects of fragmentation and overstorey tree diversity on tree regeneration were assessed in tropical rain forests of the Western Ghats, India. Ninety plots were sampled for saplings (1–5 cm diameter at breast height (dbh); 5×5-m plots) and overstorey trees (>9.55 cm dbh; 20×20-m plots) within two fragments (32 ha and 18 ha) and two continuous forests. We tested the hypotheses that fragmentation and expected seed-dispersal declines (1) reduce sapling densities and species richness of all species and old-growth species, and increase recruitment of early-successional species, (2) reduce the prevalence of dispersed recruits and (3) increase influence of local overstorey on sapling densities and richness. Continuous forests and fragments had similar sapling densities and species richness overall, but density and richness of old-growth species declined by 62% and 48%, respectively, in fragments. Fragments had 39% lower densities and 24% lower richness of immigrant saplings (presumed dispersed into sites as conspecific adults were absent nearby), and immigrant densities of old-growth bird-dispersed species declined by 79%. Sapling species richness (overall and old-growth) increased with overstorey species richness in fragments, but was unrelated to overstorey richness in continuous forests. Our results show that while forest fragments retain significant sapling diversity, losses of immigrant recruits and increased overstorey influence strengthen barriers to natural regeneration of old-growth tropical rain forests.

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Comparative assessment of floristic structure, diversity and regeneration status of tropical rain forests of Western Ghats of Karnataka, India

Journal of Applied and Natural Science ◽

10.31018/jans.v5i1.300 ◽

2013 ◽

Vol 5 (1) ◽

pp. 157-164 ◽

Cited By ~ 4

Author(s):

B. N. Sathish ◽

Syam Viswanath ◽

C.G. Kushalappa ◽

M. R. Jagadish ◽

K. N. Ganeshaiah

Keyword(s):

Tree Species ◽

Western Ghats ◽

Forest Cover ◽

Diversity Indices ◽

Evergreen Forest ◽

Tropical Rain Forests ◽

Evergreen Forests ◽

Regeneration Status ◽

Central Western Ghats ◽

The Western Ghats

Tropical forests are one of the richest landscapes in terms of its richness, diversity and endemicity. The present study was carried out in the Central Western Ghats: one of the hottest hotspot of biodiversity. The aim of the study was to compare floristic diversity in tropical wet evergreen forest between northern and southern parts of Western Ghats of Karnataka. Kodagu district in southern part and Uttara Kannada district in northern part was chosen to assess the same, as these two districts cover highest forest cover in the Western Ghats of Karnataka. In each district all the evergreen forests were sampled with 1000 m X 5 belt transacts. Totally 22 such samplings were done both southern and northern part of Western Ghats. In each of these transacts all the trees measuring e” 30 gbh were enumerated and botanically identified to the species level and the same was used for computation of diversity indices. The richness and diversity was comparatively higher in southern part compared to northern part of Western Ghats, where as the richness of threatened tree species was comparatively higher in northern part of Western Ghats. In addition to the species richness and diversity, the paper also deals with the dominant tree species and families in both the region.

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DNA barcoding of important fruit tree species of agronomic interest in the genus Garcinia L. from the Western Ghats

Genetic Resources and Crop Evolution ◽

10.1007/s10722-021-01177-6 ◽

2021 ◽

Author(s):

Jayesh Anerao ◽

Vikas Jha ◽

Nishaat Shaikh ◽

Apurva Shivalkar ◽

Aishwarya Nityanand ◽

...

Keyword(s):

Dna Barcoding ◽

Tree Species ◽

Western Ghats ◽

Fruit Tree ◽

The Western Ghats

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Northernmost distribution of five tree species to the Western Ghats from the sacred groves of Pune District, Maharashtra, India

Journal of Threatened Taxa ◽

10.11609/jott.o3644.6093-100 ◽

2014 ◽

Vol 6 (8) ◽

pp. 6093-6100

Author(s):

Aboli Kulkarni ◽

Mandar N. Datar ◽

Umesh Awasarkar ◽

Anuradha Upadhye

Keyword(s):

Tree Species ◽

Western Ghats ◽

Sacred Groves ◽

The Western Ghats

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Female courtship calls of the litter frog (Rana curtipes) in the tropical forests of Western Ghats, South India

Amphibia-Reptilia ◽

10.1163/156853805774806179 ◽

2005 ◽

Vol 26 (4) ◽

pp. 431-435 ◽

Cited By ~ 4

Author(s):

Savitha Krishna ◽

Sharath Krishna

Keyword(s):

Tropical Forests ◽

Western Ghats ◽

South India ◽

Forest Litter ◽

Calling Behavior ◽

Tropical Rain Forests ◽

Low Volume ◽

Gravid Females ◽

Female Call ◽

The Western Ghats

AbstractWe noticed an uncommon phenomenon of female vocalization in the forest litter frog, Rana curtipes during the breeding season. We digitally recorded the male and female vocalization of the litter frogs in the tropical rain forests of the Western Ghats of South India and analyzed the call characteristics. The female call varied from the male call by being single note in composition. In contrast, the male calls were composed of seven to eight notes and longer in duration. We observed that gravid females, occupying the same location every day, emitted low volume calls when numerous males were found calling at that time. Some females arrived asynchronously and called even in the absence of males possibly to declare their receptive condition. Calling females responded agonistically to receptive conspecifics of the same sex. In addition to declaring receptivity, this calling behavior may be a response to adjacent competing females when the males are few.

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Clonal propagation through stem cuttings and air layering in Syzygium caryophyllatum (L.) Alston an endemic tree Species of the Western Ghats and Sri Lanka

Journal of Non Timber Forest Products ◽

10.54207/bsmps2000-2016-h8a59h ◽

2016 ◽

Vol 23 (2) ◽

pp. 85-87

Author(s):

Abdul Hussain ◽

C. Anilkumar

Keyword(s):

Sri Lanka ◽

Tree Species ◽

Western Ghats ◽

Clonal Propagation ◽

Stem Cuttings ◽

Resource Base ◽

Natural Habitats ◽

Ideal Tool ◽

First Time ◽

The Western Ghats

Rooting trials conducted with stem cuttings and air layering in Syzygium caryophyllatum (L.) Alston, an important medicinal and fruit plant gave promising results after treatment with auxins such as IAA, IBA and NAA in different concentrations. Both stem cuttings and air layering from 10 year old plants have resulted a maximum rooting of 80% and 70% respectively through the application of IBA-1000ppm, in their natural habitats. The plants developed from stem cuttings and air layering was also survived with 90% success. Thus the standardized clonal propagation method in S. caryophyllatum through stem cutting and air layering reported for the first time can be taken as an ideal tool for the multiplication and subsequent resource base utilization of the species since the populations are prone to endangerment in its habitats.

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Syzygium anamalaianum (Myrtaceae), a new tree species from the Western Ghats of Tamil Nadu, India

Phytotaxa ◽

10.11646/phytotaxa.450.2.9 ◽

2020 ◽

Vol 450 (2) ◽

pp. 237-242

Author(s):

RAJU RAMASUBBU ◽

ANJANA SURENDRAN ◽

KARUPPA SAMY KASI

Keyword(s):

New Species ◽

Tree Species ◽

Western Ghats ◽

Tamil Nadu ◽

Tiger Reserve ◽

The Western Ghats ◽

A New Species

Syzygium anamalaianum, a new species from Anamalai Tiger Reserve, Tamil Nadu, India is described. This species is closely allied to Syzygium bharathii and S.caryophyllatum, but differs from it by having thick elliptic or ovate–lanceolate leaves with deeply grooved midrib, 4–angled prominently winged peduncle, smaller flower, funnel or pyriform hypanthium, inwardly curved stamens of varying lengths and obovate or subglobular seeds. This combination of characters makes determining the relationships of Syzygium anamalaianum difficult.

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