Vegetation and gap dynamics of a tropical wet evergreen forest in the Western Ghats of Kerala, India

1994 ◽  
Vol 10 (3) ◽  
pp. 337-354 ◽  
Author(s):  
U. M. Chandrashekara ◽  
P. S. Ramakrishnan
Keyword(s):  
Tree Species ◽  
Western Ghats ◽  
Monsoon Season ◽  
Mixed Forest ◽  
Canopy Gap ◽  
Evergreen Forest ◽  
Gap Formation ◽  
Canopy Tree ◽  
Canopy Tree Species ◽  
The Western Ghats

ABSTRACTThe wet evergreen forest of Nelliampathy in the Western Ghats of Kerala in India is a mixed forest with a high species diversity and basal cover. In this relatively undisturbed ecosystem, canopy gaps are largely formed through single tree fall, but gaps through branch fall, crown fall, standing dead trees or multiple tree fall also occur. Canopy gap formation is more (over 82% of the total gaps created) during the monsoon season. The mean number of gaps formed in this forest is 1.13 ha−1 y−1 and the turnover rate is 83 years. The majority of the gaps created (over 70%) are of smaller size (≥ 100 m2). In this forest, while some top canopy tree species (those capable of exceeding 25 m in height at maturity) such as Palaquium ellipticum and Mesua nagassarium are well represented in seedling, sapling and mature tree stages, others like Aglaia exstipulata and Mastixia arborea are observed only as saplings and/or mature trees with no seedling populations. The possible reasons for these two types of regeneration behaviour by top canopy tree species in the context of canopy gap size and seasonality in gap formation are discussed.

Fine- and local- scale genetic structure of Dysoxylum malabaricum, a late-successional canopy tree species in disturbed forest patches in the Western Ghats, India

2016 ◽  
Vol 18 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Sofia Bodare ◽  
Gudasalamani Ravikanth ◽  
Sascha A. Ismail ◽  
Mohana Kumara Patel ◽  
Ilaria Spanu ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Tree Species ◽  
Western Ghats ◽  
Local Scale ◽  
Forest Patches ◽  
Canopy Tree ◽  
Canopy Tree Species ◽  
Disturbed Forest ◽  
The Western Ghats

Determinants of spatial patterns of canopy tree species in a tropical evergreen forest in Gabon

2019 ◽  
Vol 30 (5) ◽  
pp. 929-939 ◽  
Author(s):  
Nestor Laurier Engone Obiang ◽  
David Kenfack ◽  
Nicolas Picard ◽  
James A. Lutz ◽  
Pulchérie Bissiengou ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Tree Species ◽  
Evergreen Forest ◽  
Canopy Tree ◽  
Tropical Evergreen Forest ◽  
Canopy Tree Species

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

2013 ◽  
Vol 5 (1) ◽  
pp. 157-164 ◽  
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.

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

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

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

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

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

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.

Precipitation modes over the Western Ghats orography during the summer monsoon season

2021 ◽  
Author(s):  
Jayesh Phadtare ◽  
Jennifer Fletcher ◽  
Andrew Ross ◽  
Andy Turner ◽  
Thorwald Stein ◽  
...  
Keyword(s):  
Summer Monsoon ◽  
West Coast ◽  
Western Ghats ◽  
Monsoon Season ◽  
Radiosonde Data ◽  
Summer Monsoon Season ◽  
The West ◽  
Radiosonde Station ◽  
Westerly Flow ◽  
The Western Ghats

<p>Precipitation distribution around an orographic barrier is controlled by the Froude Number (Fr) of the impinging flow. Fr is essentially a ratio of kinetic energy and stratification of winds around the orography. For Fr > 1 (Fr <1), the flow is unblocked (blocked) and precipitation occurs over the mountain peaks and the lee region (upwind region). While idealized modelling studies have robustly established this relationship, its widespread real-world application is hampered by the dearth of relevant observations. Nevertheless, the data collected in the field campaigns give us an opportunity to explore this relationship and provide a testbed for numerical models. A realistic distribution of precipitation over a mountainous region in these models is necessary for flash-flood and landslide forecasting. The Western Ghats region is a classic example where the orographically induced precipitation leads to floods and landslides during the summer monsoon season. In the recent INCOMPASS field campaign, it was shown that the precipitation over the west coast of India occurred in alternate offshore and onshore phases. The Western Ghats received precipitation predominantly during the onshore phase which was characterized by a stronger westerly flow. Here, using the radiosonde data from a station over the Indian west coast and IMERG precipitation product, we show that climatologically, these phases can be mapped over an Fr-based classification of the monsoonal westerly flow. Classifying the flow as 'High Fr' (Fr >1), 'Moderate Fr' ( 0.5 < Fr ≤ 1) and 'Low Fr' ( Fr ≤ 0.5 ) gives three topographical modes of precipitation -- 'Orographic', 'Coastal' and 'Offshore', respectively.  Moreover, these modes are not sensitive to the choice of radiosonde station over the west coast.</p>

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