123
5 Timing and Location of Aggregation and Spawning in Reef Fishes
The IWP is somewhat different, with TAs not only on the outer slope, but also
often at the mouth and inner reaches of channels through barrier and other types of
reefs. Such channels are rare in the TWA. RAs occur across a wider range of habitats
including many locations on broad insular shelves and inner reefs; not just outer
reef faces (Chap. 2). Site selection may be determined more by the limitations of
migration distance than by other factors.
To evaluate geomorphology across geographically distinct sites, a standardized
terminology is needed. The terms used previously are often vague, confusing and
poorly defi ned. Ideally in this volume these terms are used consistently in the hope
that some general defi nitions can be developed and applied to future usage. Reefs
are variable in shape with ends, curves, and bends along their lengths, projections at
various locations, and basins among possible features. The deeper and shallower
Fig. 5.3 The promontories
along the shelf edge reefs of
the Bahamas (western end of
New Providence Island
shown) are common and of
various sizes. The view
shows two major (“ large
scale ”) promontories; ( a ) is a
historically known Nassau
grouper aggregation site, now
fi shed out, and ( b ) is not
known as an aggregation site.
Five lesser (“ small scale ”)
promontories (1–5) are
indicated: none are known
as aggregation sites
5 Timing and Location of Aggregation and Spawning in Reef Fishes
The IWP is somewhat different, with TAs not only on the outer slope, but also
often at the mouth and inner reaches of channels through barrier and other types of
reefs. Such channels are rare in the TWA. RAs occur across a wider range of habitats
including many locations on broad insular shelves and inner reefs; not just outer
reef faces (Chap. 2). Site selection may be determined more by the limitations of
migration distance than by other factors.
To evaluate geomorphology across geographically distinct sites, a standardized
terminology is needed. The terms used previously are often vague, confusing and
poorly defi ned. Ideally in this volume these terms are used consistently in the hope
that some general defi nitions can be developed and applied to future usage. Reefs
are variable in shape with ends, curves, and bends along their lengths, projections at
various locations, and basins among possible features. The deeper and shallower
Fig. 5.3 The promontories
along the shelf edge reefs of
the Bahamas (western end of
New Providence Island
shown) are common and of
various sizes. The view
shows two major (“ large
scale ”) promontories; ( a ) is a
historically known Nassau
grouper aggregation site, now
fi shed out, and ( b ) is not
known as an aggregation site.
Five lesser (“ small scale ”)
promontories (1–5) are
indicated: none are known
as aggregation sites