Recovery of frog and lizard communities following primary habitat alteration in Mizoram, Northeast India
Author(s)
Pawar, SS
Rawat, GS
Choudhury, BC
Type
Journal Article
Abstract
Background Community recovery following primary habitat alteration can provide tests for various hypotheses in ecology and conservation biology. Prominent among these are questions related to the manner and rate of community assembly after habitat perturbation. Here we use space-for-time substitution to analyse frog and lizard community assembly along two gradients of habitat recovery following slash and burn agriculture (jhum) in Mizoram, Northeast India. One recovery gradient undergoes natural succession to mature tropical rainforest, while the other involves plantation of jhum fallows with teak Tectona grandis monoculture. Results Frog and lizard communities accumulated species steadily during natural succession, attaining characteristics similar to those from mature forest after 30 years of regeneration. Lizards showed higher turnover and lower augmentation of species relative to frogs. Niche based classification identified a number of guilds, some of which contained both frogs and lizards. Successional change in species richness was due to increase in the number of guilds as well as the number of species per guild. Phylogenetic structure increased with succession for some guilds. Communities along the teak plantation gradient on the other hand, did not show any sign of change with chronosere age. Factor analysis revealed independent sets of habita variables that determined changes in community and guild composition during habitat recovery. Conclusions The timescale of frog and lizard community recovery was comparable with that reported by previous studies on different faunal groups in other tropical regions. Both communities converged on primary habitat attributes during natural vegetation succession, the recovery being driven by deterministic, nonlinear changes in habitat characteristics. On the other hand, very little faunal recovery was seen even in relatively old teak stands. Generally, tree monocultures are unlikely to support recovery of natural forest communities and the combined effect of shortened jhum cultivation cycles and plantation forestry could result in landscapes without mature forest. Lack of source pools of genetic diversity will then lead to altered vegetation succession and faunal community reassembly. It is therefore important that the value of habitat mosaics containing even patches of primary forest and successional secondary habitats be taken into account
Date Issued
2004-08-06
Date Acceptance
2004-08-06
Citation
BMC Ecology, 2004, 4
ISSN
1472-6785
Publisher
BioMed Central
Journal / Book Title
BMC Ecology
Volume
4
Copyright Statement
© 2004 Pawar et al; licensee BioMed Central Ltd. This article is published under license to BioMed Central Ltd. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
License URL
Subjects
Adaptation, Physiological
Animals
Anura
Biodiversity
Conservation of Natural Resources
Environment
India
Lizards
Phylogeny
Plant Development
Plants
Poaceae
Principal Component Analysis
Trees
Animals
Anura
Lizards
Plants
Poaceae
Trees
Environment
Conservation of Natural Resources
Biodiversity
Adaptation, Physiological
Phylogeny
Principal Component Analysis
India
Plant Development
Ecology
0602 Ecology
0603 Evolutionary Biology
Notes
file: :home/mhasoba/Documents/Reference_manager/Reprints/Pawar, Rawat, Choudhury_2004_BMC Ecology.pdf:pdf keywords: AGE,ATTRIBUTES,Agriculture,BIOLOGY,CLASSIFICATION,COMMUNITIES,COMMUNITY,COMPOSITION,CONSERVATION,CONSERVATION BIOLOGY,CYCLE,CYCLES,DIVERSITY,DRIVEN,ECOLOGY,FROG,FROGS,Forest,GENETIC DIVERSITY,GRADIENT,GRADIENTS,GUILD,GUILDS,HABITAT,HABITAT ALTERATION,HABITAT MOSAIC,HABITAT VARIABLES,HABITATS,HYPOTHESES,INCREASE,INDIA,LANDSCAPE,LIZARD,LIZARD COMMUNITIES,LIZARD COMMUNITY,LIZARDS,MIZORAM,MONOCULTURE,MONOCULTURES,MOSAIC,NATURAL,NICHE,NORTHEAST INDIA,NUMBER,PLANTATION,PLANTATION FORESTRY,POOLS,PRIMARY FOREST,RAINFOREST,RECOVERY,REGENERATION,REGION,REGIONS,RICHNESS,SET,SPECIES,SPECIES RICHNESS,SPECIES-RICHNESS,STAND,STANDS,SUBSTITUTION,SUCCESSION,TEAK,TESTS,TREE,TURNOVER,VALUE,VARIABLES,VEGETATION,analysis,assembly,combined,community assembly,forestry,guild composition,habitat mosaics,landscapes,mosaics,pap-NEcong,pap-NEcons,pap-commstabmiz,pap-succession,patch,patches,phylogenetic,source,structure,support,tropical,tropical rainforest,variable pmid: 15298711
Publication Status
Published
Article Number
10