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SACON's
perspective research plans include: |
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Avian
ecology and endangered bird conservation programme |
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It
is reported that the world loses about 170,000 sq.km. of tropical
forests every year and the extinction rate of species is 25,000
times the natural rate. Of the 9,723 bird species of the world,
around 1,100 are globally threatened. In India, of the 1,295
species, around 76 are threatened. In this background SACON
launched an Endangered Species Programme focusing on the status,
distribution and ecology of the species concerned in order
to formulate long-term conservation programmes.
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This
will be continued, while a national coordinated progamme covering
all the threatened birds of India will be formulated and launched.
SACON would be involving ornithologists from all over the
country in the programme.
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Other
focal areas are: (1) population and basic ecology of birds,
(2) community ecology, (3) fundamental ornithological issues
and unresolved bird phenomena, (4) behavioural ecology, (5)
avian physiology and (6) anthropogenic activities and physiological
changes in birds. Apart from these, building up a cadre of
professionals in ornithology will be one of the major programmes
of SACON.
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Man
and biodiversity conservation |
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Man
has been living in harmony with nature since time immemorial.
This harmony has been disrupted since human population started
increasing and the demand on biological resources became manifold.
Gradually the relationship between Man and nature became a
destructive proposition leading to habitat loss (estimated
at 0.6% per year in the tropics) and fragmentation, over-harvesting
of wild populations, chemical pollution, introduced species
and, lately, climatic changes; all posing threats to the biodiversity
and thus, to the very survival of Man. It is in this context
that the Convention of Biological Diversity made it mandatory
for all countries to make a systematic assessment of the impacts
of these threats on ecosystems and species in order to prioritize
them for conservation action. It has thus become a major area
of research interest in SACON.
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Most
of the wildlife habitats in India have been reduced to numerous
isolated fragments with small population of many endangered
species, because of the mounting anthropogenic activities.
Therefore, survival of most species and even ecosystems depends
on our ability to manage them in such highly fragmented state.
The thrust areas have been identified in this backdrop.
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Impact of anthropogenic activities on the long-term survival
of species/ ecosystems |
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major area identified is fragmentation of the habitats
and populations. Emphasis is given to determine the impact
of fragmentation on arboreal mammals, (especially primates),
large herbivores (elephants), smaller mammals (mainly
rodents), and herpetofauna. |
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Role
of corridors in managing fragmented populations is another important
area of research.
Other major questions to be addressed are: |
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displacement
and colonization of species and their impact on the systems, |
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inbreeding depression, if any, or genetic consequences
of fragmentation, |
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determination
of minimum viable population and |
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changes in the overall structure and functioning of the
ecosystem. |
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Ecosystem structure and function |
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It
is increasingly evident that a proper understanding of the
patterns and process that govern the ecosystem is vital for
formulating long-term conservation programmes. Realizing the
difficulties to have large manpower and huge financial commitment
for total ecosystem studies, it has been decided to concentrate
on key issues in minute details, which would provide a reasonable
understanding of the system.
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Production
and nutrient cycling: Typically the kind of questions to be
addressed are:
i. is net primary productivity and Biodiversity related?
ii. are nutrient cycling and biodiversity related?
iii. how do modern advanced spatial technologies explain the
patterns and process at ecosystem and landscape level?
iv. how do the current extraction regimes impinge upon production
and nutrient cycling?
Priorities will be given to i and iii. |
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Plant-Bird interactions |
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Gaining
an understanding of various facets of plant-animal interactions,
namely food selection, dispersal, seed predation, defence
mechanisms, along with the peculiar characteristic features
of plants, is of paramount importance in designing conservation
strategies. Having conducted more common place studies
such as the fruit preference by birds, more specific questions
have to be asked.
i. how does a particular species of bird select a particular
fruit? Is it because of simple abundance and consequently
less competition?
ii. how are the fruits adapted for the birds? size, structure,
taste, smell, chemistry or seasonality? |
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It
is increasingly being felt that a better resolution of the
plant-animal interaction is achieved from a chemical - ecological
perspective and hence, it is desirable to move towards this
direction as the other aspects are commonly covered. The academic
and applied implications of such a study will have several
important consequences. To name a few, such a study will give
an idea about the factors governing the rarity/abundance of
a given taxa. This is expected to have major 'down stream'
effects in conservation biology. This will also open up new
vistas of exciting area of chemical ecology and chemical diversity
of nature, the applied aspect of which is just being discovered
in pharmaceutics, biotechnology and molecular biology.
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Restoration Ecology |
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The
need of the hour in the 21st century is our ability to repair
the damaged and degraded landscapes and ecosystems, and to
restore species populations as close to the natural state
as possible. Our team in Terrestrial Ecology has just completed
a project on the 'bird dispersed plants' for restoration in
Coimbatore forest areas. These efforts will continue in varied
ecosystems and try to continue to unravel birds as 'harbingers'
of restoration.
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aspects envisaged are: |
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criteria
for long-term conservation for species/ habitats, |
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endangered species recovery programme, |
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application
of advanced spatial technologies in biodiversity conservation
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natural
resource accounting. |
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