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ID: 54217
Title: Investigating canopy regeneration processes through individual-based spatial models: application to a tropical rain forest
Author: M A Moravie, J P Pascal, P Auger
Editor: Pierre Couteron
Year: 2007
Publisher: French Institute of Pondicherry, April 2007
Source: Centre for Ecological Sciences
Reference: None
Subject: Forest stand dynamics in the wet evergreen natural forests of the Western Ghats of India-Compilation of publications of the French Institute of Pondicherry
Keywords: Tropical rain forest, Canopy regeneration, spatial pattern, competition indices, individual-based model, Western Ghats, India
Abstract: Observations of circular structures in a permanent plot in a natural dense tropical forest of the Western Ghats (India) led to formulation of new hypotheses on the spatial organization resulting from interactions between trees. Here we propose a canopy regeneration process that does not involve treefall gaps. The peculiar spatial circular structure is composed of a central dominant tree with less than two trees under its crown and five or more other trees forming a ring at the limit of its crown. Such a structure is supposed to occur under certain conditions and , in particular, under strong competition for light. We describe a regeneration mechanism based on replacement of the central tree by a shift to one of the trees in its peripheral ring so that progressive recovery of the canopy occurs without large gap dynamics. We built a spatial simulator of forest dynamics in order to investigate the occurrence of such spatial structures and to examine their role in canopy regeneration. The model is an individual -based spatial model for mixed uneven-aged forest stands and accounts for annual evolution of the trees in the simulated stand, incorporating mortality, recruitment, growth and competition processes. The main originality of this model lies in the description of crown growth in eight cardinal directions, and in the use of neighbor position and size to express competitive interactions. The model demonstrates the development of the circular spatial structures in simulated stands as those observed in the permanent plot and shows that the proposed canopy regeneration mechanism can occur in the absence of perturbation.
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54216
Title: Monitoring the structure and dynamics of a dense moist evergreen forest in the Western Ghats (Kodagu District, Karnataka, India)
Author: C Elouard, J P Pascal, R Pelissier, B R Ramesh, F Houllier, M Durand, S Aravajy, M A Moravie & C Gimaret-Carpentier
Editor: Pierre Couteron
Year: 2007
Publisher: French Institute of Pondicherry, April 2007
Source: Centre for Ecological Sciences
Reference: None
Subject: Forest stand dynamics in the wet evergreen natural forests of the Western Ghats of India-Compilation of publications of the French Institute of Pondicherry
Keywords: dense moist evergreen forest, Western Ghats
Abstract: A permanent experimental station was established in a dense moist evergreen forest of the Western Ghats. Two forest compartments of 28 ha each are being monitored to study the impact of selective logging in the once-logged compartment and the forest structure and dynamics in the order undisturbed compartment. The density (635 trees > 30 cm gbh ha-1), basal area (39.7 m2 ha-1), diversity (Simpson ' s D = 0.92 and Shannon ' s H ' = 4.56) and degree of endemism (48%) are high. Four species are dominant in terms of an importance value index and occupy a different layer in the ecosystem: Humboldtia brunonis, Wall. (Fabaceae) dominates the undergrowth, Myristica dactyloides Gaertn. (Myristicaceae) the intermediate strata, Vateria indica L. (Dipterocarpaceae) the higher canopy level and Dipterocarpus indicus bedd. (Dipterocarpaceae) the emergents. Spatial structural variations can be identified on plateaus and gentle slopes, the forest is less diverse but denser and regular whereas it is more heterogeneous and diverse on the slopes.
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54215
Title: Forest stand dynamics in the wet evergreen natural forests of the Western Ghats of India-Compilation of publications of the French Institute of Pondicherry
Author: Jean-Pierre Pascal and Raphael Pelissier
Editor: Pierre Couteron
Year: 2007
Publisher: French Institute of Pondicherry, April 2007
Source: Centre for Ecological Sciences
Reference: None
Subject: Forest stand dynamics in the wet evergreen natural forests of the Western Ghats of India-Compilation of publications of the French Institute of Pondicherry
Keywords: Floristic composition, India, population structure, spatial structure, tropical evergreen forest, Western Ghats
Abstract: A 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 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 m2ha-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 dactyloides Gaertn. (Myristicaceae) the intermediate strata, Vateria 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 Vateria indica and Myristica dactyloides. The link between the structure of thestand and dynamic processes is discussed.
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54214
Title: Working plan for the Forests of Sirsi Division
Author: K S Sai Baba
Editor: K S Sai Baba
Year: 2002
Publisher: Working Plan Division, Karnataka Forest Department, Dharwad
Source: Centre for Ecological Sciences
Reference: None
Subject: Working plan for the Forests of Sirsi Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54213
Title: Working plan of Dharwad Forest Division
Author: Raj Kishore Singh
Editor: Raj Kishore Singh
Year: 2002
Publisher: Working Plan Division, Karnataka Forest Department, Dharwad
Source: Centre for Ecological Sciences
Reference: None
Subject: Working plan of Dharwad Forest Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54212
Title: Working plan for the forests of Honnavar Division
Author: K S Sai Baba
Editor: K S Sai Baba
Year: 2002
Publisher: Working Plan Division, Karnataka Forest Department, Dharwad
Source: Centre for Ecological Sciences
Reference: None
Subject: Working plan for the forests of Honnavar Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54211
Title: Working plan for the forests of Karwar Division
Author: K S Sai Baba
Editor: K S Sai Baba
Year: 2002
Publisher: Working Plan Division, Karnataka Forest Department, Dharwad
Source: Centre for Ecological Sciences
Reference: None
Subject: Working plan for the forests of Karwar Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54210
Title: Working plan for Yellapur Division
Author: Raj Kishore Singh
Editor: Raj Kishore Singh
Year: 2002
Publisher: Working Plan Division, Dharwad
Source: Centre for Ecological Sciences
Reference: None
Subject: Working plan for Yellapur Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54209
Title: Oxfam Support Project - Uttara Kannada
Author: Amit Mitra, Mariette Correa
Editor: None
Year: 1997
Publisher: Oxfam (India) Trust, February 1997
Source: Centre for Ecological Sciences
Reference: None
Subject: Oxfam Support Project - Uttara Kannada
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54208
Title: Remote Sensing Based Management Plan Inputs Haliyal Forest Division
Author: None
Editor: Dr C B S Dutt
Year: 1996
Publisher: Forestry & Ecology Division, NRSA and KFD, October 1996
Source: Centre for Ecological Sciences
Reference: None
Subject: Remote Sensing Based Management Plan Inputs Haliyal Forest Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54207
Title: Remote Sensing Based Management Plan Inputs Honnavar Forest Division
Author: None
Editor: Dr. C B S Dutt
Year: 1995
Publisher: Forestry & Ecology Division, NRSA and KFD, 1995
Source: Centre for Ecological Sciences
Reference: None
Subject: Remote Sensing Based Management Plan Inputs Honnavar Forest Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54206
Title: Remote Sensing Based Management Plan Inputs Yellapur Forest Division
Author: None
Editor: Dr. C B S Dutt
Year: 1996
Publisher: Forestry & Ecology Division, NRSA and KFD, October 1996
Source: Centre for Ecological Sciences
Reference: None
Subject: Remote Sensing Based Management Plan Inputs Yellapur Forest Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54205
Title: Remote Sensing Based Management Plan Inputs Sirsi Forest Division
Author: None
Editor: Dr. C B S Dutt
Year: 1995
Publisher: Forestry & Ecology Division, NRSA and KFD, 1995
Source: Centre for Ecological Sciences
Reference: None
Subject: Remote Sensing Based Management Plan Inputs Sirsi Forest Division
Keywords: None
Abstract: None
Location: Kumta
Literature cited 1: None
Literature cited 2: None

ID: 54204
Title: Nestedness pattern in stream diatom assemblages of Central Western Ghats
Author: B. Karthick, M.K.Mahesh and T.V. Ramachandra
Editor: P Balaram
Year: 2011
Publisher: Current Science Association, Vol 100, No 4, 25 February 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Diatoms, idiosyncratic species, nestedness, stream sites
Abstract: Community diversity and the population abundance of a particular group of species are controlled by immediate environment, inter- and intra-species interactions, landscape conditions, historical events and evolutionary processes. Nestedness is a measure of order in an ecological system, referring to the order in which the number of species is related to area or other factors. In this study we have studied the nestedness pattern in stream diatom assemblages in 24 stream sites of central Western Ghats, and report 98 taxa from the streams of central Western Ghats region. The communities show highly significant nested pattern. The Mantel test of matrix revealed a strong relationship between species assemblages and environmental conditions at the sites. A significant relationship between species assemblage and environmental condition was observed. Principal component analysis (PCA) indicated that environmental conditions differed markedly across the sampling sites, with the first three components explaining 78% of variance. Species composition of diatoms is significantly correlated with environmental distance across geographical extent. The current pattern suggests that micro-environment at regional levels influences the species composition of epilithic diatoms in streams. The nestedness shown by the diatom community was highly significant, even though it had a high proportion of idiosyncratic species, characterized with high numbers of cosmopolitan species, whereas the nested species were dominated by endemic species. PCA identifies ionic parameters and nutrients as the major features which determine the characteristics of the sampling sites. Hence the local water quality parameters are the major factors in deciding the diatom species assemblages.
Location: 241
Literature cited 1: None
Literature cited 2: None

ID: 54203
Title: Status of Embelia ribes Burm f. (Vidanga), an important medicinal species of commerce from northern Western Ghats of India
Author: M Mhaskar, S Joshi, B Chavan, A Joglekar, N Barve and A Patwardhan
Editor: P Balaram
Year: 2011
Publisher: Current Science Association, Vol 100, No 4, 25 February 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: Current Science
Keywords: Distribution map, Embelia ribes, population decline, trade
Abstract: Embelia ribes is a red-listed medicinal plant species that contains embelin, which has wide clinical applications. Its great demand in Ayurveda and the pharmaceutical industry (>100 t/yr) has imposed tremendous pressure on natural populations from the Western Ghats of India. In this study, we have prepared a distribution map of E. ribes for the northern Western Ghats of Maharashtra. Issues regarding misidentification, adulteration and the status of its trade with respect to its population decline have been critically discussed.
Location: 241
Literature cited 1: None
Literature cited 2: None