Zaghloul (1988) found two layers: a dilute surface layer
characterized by lower salinity, low dissolved oxygen, high dissolved
phosphate and silicate, high specific alkalinity, low sechi
disk transparency and a dense phytoplankton standing crop.
The second layer was at the bottom which was characterized
by a higher density, higher salinity, lower dissolved oxygen,
lower dissolved silicate, lower specific alkalinity and lower
phytoplankton standing crop. El Komi (1991) found that the
intensity of fouling on exposed test panels for long duration
is considerably more than the total fouling developed on
exposed panels for a short term, successively during the same
period. Abdalla et al. (1995) found that the harbor was characterized
by a high nutrient load particularly phosphate, nitrate
and ammonia. Its oxygen content shows wide variations
between surface and near bottom. The harbor sustained a high
density of phytoplankton and community characterized by the
dominance of eutrophication tolerant algal species.
The aim of the present work is to study the beach seine fishery,
(statistics, species and size composition, length–weight
relationships and age composition), in terms of biodiversity
and catch efficiency to assess and provide management suggestions.
This will help in covering the lack of information about
the fishery of the beach seine in the Eastern Harbor since 1987.