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Assessment of anthropogenic impact on biodiversity in Araba Valley
The Araba valley constitutes one area which rich biodiversity
mandates energetic conservation efforts. The valley is a small part of
the Syrian-African Rift Valley, stretching from the southern tip of
the Dead Sea to the Red Sea. Despite the harsh climate Araba Valley
supports a series of habitats with an extremely rich variety of flora
and fauna, Araba Valley has a particular zoological importance because
it serves as a biological filter between the palearctic, Ethiopian,
and oriental regions.
In December 2002 JSSD has conducted a 3 years project that aims to:
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To produce a series of biotic maps of
the southern Araba based on currently available data.
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To identify different landscape units
in the study area.
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To determine the distribution of
different organisms and their relationship to the above landscape
units
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To identify and map anthropogenic
disturbance in the study area
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To produce a map of ecological
sensitivities that characterize vulnerable biological landscape
units in the southern Araba
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To design a tentative plan to conserve
biodiversity in the study area depending on ecological sensitivity
maps.
Specific taxa have been chosen to clarify the disturbance impact on
biodiversity which include Mammals, Birds, insects, and reptiles. Such
groups are used as an indicator for levels and types of disturbance in
the Araba Valley.
Field work continued for 2 years in several sampling units, which
fulfill the following criteria: richness of species, adjacent to
agriculture and residential development, and control groups for these
target landscapes.
It is important to consider the magnitude of the existing challenge
to bio-diversity. This requires a synthesis of the sensitivity maps
with the anthropogenic disturbance. The actual overlay of the two will
reveal existing loci of tension and challenges for the conservation
work. It will also provide an excellent basis for predicting the
likelihood of threatened species survival over the long run, giving
the best sustain development patterns and activities. In the future
planning for the Arab Valley
The project end with creation of sensitivity maps by GIS unit in JSSD
that will help the planners and the decision makers regarding the land
use of the area in the future. |