[Coral-List] new AGRRA protocols available online
jlang at riposi.net
Tue Apr 27 15:35:10 EDT 2010
New Atlantic and Gulf Rapid Reef Assessment (AGRRA) Protocols, UW
datacards and data entry sheets are available for downloading at the
AGRRA website (www.agrra.org).
Assessing important structural and functional attributes of tropical
Western Atlantic coral reefs, and fisheries-independent estimates of
fishing intensity, remain core goals of the Program. AGRRA sites are
surveyed in a probabilistic fashion to yield information
representative of large areas, such as shelves, islands, countries or
ecoregions, i.e., at the scales over which many reef structuring
processes and impacts occur.
To enhance comparability with subregional survey programs in the wider
Caribbean (and with some regional Indo-Pacific efforts), a number of
changes are introduced in Version 5 of the AGRRA protocols. The
original benthos protocol has been partitioned into two components to
simplify the tasks required of surveyors. Because small corals were
underrepresented in earlier surveys, their minimum size is reduced to
4 cm and one-meter wide belt transects replace line transects.
Additions to the visual fish census include lionfishes, morays, as
well as potentially significant predators of Diadema and corallivores
(animals that prey on corals).
Groups are encouraged to set their own level of effort, between basic
(for novices and some management needs) and detailed (some research
needs), for each of the new survey methods.
Email Judy Lang at: jlang at riposi.net
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