Ecosystem Sustainability and Climate Change

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An Introduction to Ecosystem Sustainability and Climate Change: Anthropogenic activities have been pouring greenhouse gases into the atmosphere which is evident from the increasing trends of changes in global temperature, precipitation, climate induced hazards/disasters, pest distribution, etc. It is alternating the habitable areas of species, their distribution, rate of survival and reproduction, food web interactions, ecosystem services, and their conservation. Ecological managers need to invent smart solutions to control and mitigate further erosion of ecosystems.

The increase in GHGs concentration in the atmosphere leads to change in climate and biological characteristics of the ecosystems. The concentration of CO2 is expected to rise from 368 ppm to 540-970 ppm by 2100, with rise in average global temperature between 1.8 to 4.0°C with spatial variation in temperature and pressure. The variation in the terrestrial ecosystems is likely to occur with a global warming of 2-3 ° C after pre-industrial period and about 20-30 % species are likely to face extinction (IPCC, 2007). The ongoing efforts to cope up with the effects of climate change and promote sustainable development includes equity in the distribution of resources, use of Remote Sensing and GIS in natural resource management, stocks of human and social capital, consolidate decision making process, and fostering green economy.

Definitions:

Ecosystem based adaptation: The use of biological resources and their ecosystem services to adapt to the negative effects of climate change (CBD 2009) and accounting multiple social, economic, and cultural benefits through sustainable protection, conservation, management, and restoration of the ecosystems. The adaptation is facilita...

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..., distribution, and breeding success of the bird population across the globe. About 4 species of hornbill are found in the evergreen forest of Nelliampathy in Western Ghats, out of which three species need contagious forest patches for feeding and breeding. Hey are highly dependent on the selected trees for fruit and nesting sites and therefore are more susceptible to habitat alteration. Changes in the climatic factors affects the time, composition, distribution, and abundance of fruit supply and their foraging pattern. The 4 years study from 2009-2012 suggests that variations in the temperature and rainfall has caused shifts in fruit phenology and hence in the range and distribution of hornbills in the region. This has indirectly, affected the natural seed dispersion and the subsequent regeneration of the part of the Western Ghats due to foraging activities.

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