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What's
an AquaRAP?
AquaRAP is short for Aquatic Rapid Assessment Program. The
program is designed to quickly collect, analyze, and disseminate
scientific data on freshwater aquatic ecosystems for use
in conservation planning. Field expeditions typically last
only three to four weeks, while data analysis and report
preparation is expected within six to eight months after
the expedition.
AquaRAP teams survey such taxonomic groups as fishes, macro-crustaceans,
aquatic insects, aquatic plants, and plankton. The scientists
also study water chemistry and hydrology. Focusing on entire
watersheds, the team studies the biological diversity, degree
of endemism, uniqueness, and ecological connections within
each system.
Scientists
carefully choose specific survey sites by consulting satellite
imagery and overflights before a trip. In the field, they
survey specific taxonomic groups as well as indicator species,
taxa whose presence can help identify a habitat type or
its condition. AquaRAP provides a primarily qualitative
assessment to determine how a system is faring and what
threats it faces. This survey usually precedes long-term
scientific inventory and research which is often based on
the data collected by the AquaRAP team.
Why are scientists focusing
on the Caura River Basin?
As one of the most pristine ecosystems in South America,
the Caura Basin and its inhabitants remain a tantalizing
mystery to conservation biologists. The lack of human activity
in the region leads the team to believe the Caura is a thriving
ecosystem that may even contain new species.
Located in southern Venezuela, the Caura comprises 5 percent
of the entire country and supports the region's 15,000 inhabitants.
The aquatic ecosystems provide freshwater, food, transportation
and habitat for local communities as well as for wildlife.
However, serious threats exist from a proposed water diversion
project, encroachment by miners and deforestation for agricultural
pursuits.
What species will the biologists
study?
Previous studies of the Caura region are few in number,
but they indicate that high levels of biodiversity endemism
(species found nowhere else) exist. Approximately 257 bird
species, 208 mammal species and up to 450 fish species are
part of this unique ecosystem. This AquaRAP survey will
likely yield high numbers of terrestrial and aquatic organisms,
and may even uncover some species that are new to science.
The
AquaRAP team will conduct rapid surveys of aquatic organisms,
including fishes, shrimp, crabs, plankton, zoobenthoths,
and riparian vegetation, as well as a general survey of
ecology and geomorphology. Team limnologists (fresh water
scientists) will also evaluate water, chemistry and quality.
What will be done with data
collected?
AquaRAP aspires to make the results of the surveys available
to decision-makers, scientists, conservation groups, and
the general public as "RAPidly" as possible. The challenge
for AquaRAP participants is to cover vast areas in a short
amount of time to consolidate data in order to complete
apreliminary report before leaving Venezuela.
In
addition, the data will be used to generate a final report,
which will make recommendations regarding the conservation
and management of these critical resources. The data collected
by CI will be used to establish a long term monitoring program
for the region.
A member
of the indigenous community is accompanying the AquaRAP
team to work with the scientists to create ways that the
data can be made useful to the people who live there.
What is life like on the expedition?
According to RAP Coordinator, Jensen Montambault, the Caura
expedition will be "the most rugged AquaRAP ever!" This
is mainly due to the site's remote location. After flying
over the site earlier this year she said, "all you can see
is the thick forest canopy for miles around. Since the Ye'kwana
and Sanema people mainly use the river for transportation,
there are absolutely no roads."
Scientists
will be living under primitive conditions during the expedition,
traveling in dugout canoe by day and camping along the river's
edge most nights. Whitewater rapids will pose the greatest
danger to the team, therefore team members will wear life
jackets while in the canoes. A helicopter will transport
the team down the Salto Parà, the largest waterfall in the
river system which is not navigable by boat.
The
team carries a satellite phone for emergency communication.
Throughout
the expedition, care will be taken not to disturb indigenous
communities, who have graciously permitted this study of
their homeland. Be sure to read the field dispatches to
learn more about life on the expedition.
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