Journal
AQUATIC BOTANY
Volume 126, Issue -, Pages 38-47Publisher
ELSEVIER
DOI: 10.1016/j.aquabot.2015.06.004
Keywords
Cattle grazing; Floodplain wetland; Land use change; Protected area management; Seasonal drought; Supra-seasonal drought; Vegetation removal; Water level tolerance
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Funding
- Smithsonian Grant [4013600]
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Responses of species to disturbances give insights into how species might respond to future wetland changes. In this study, species of monsoonal wetlands belonging to various functional types (graminoid and non-graminoid emergents, submersed aquatic, floating-leaved aquatic) varied in their growth responses to water depth and harvesting. We tested the effects of water depth (moist soil and flooded) and clipping (unclipped and clipped) on the biomass and longevity of twenty-three dominant plant species of monsoonal wetlands in the Keoladeo National Park, India in a controlled experiment. With respect to total biomass and survival, six species responded positively to flooding and twelve species responded negatively to clipping. Responses to flooding and clipping, however, sometimes interacted. Individualistic responses of species to water levels and clipping regimes were apparent; species within a functional group did not always respond similarly. Therefore, detailed information on the individualistic responses of species may be needed to predict the vegetation composition of post-disturbance wetlands. In particular, as demands for fresh water increase around the world, studies of life history constraints and responses to hydrological changes will aid wetland managers in developing strategies to conserve biodiversity. Published by Elsevier B.V.
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