Ecological effects of breakwater in Bandar Anzali on diversity and abundance of macro-invertebrates
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
This study carried out in order to investigate the impact of Bandar Anzali's breakwater on the diversity and abundance of Macro-invertebrates. Twelve stations were located in two sides of the breakwater in the wall and in the sea substrate. The sampling carried out from November 2017 until August 2018, seasonally. In the substrate stations on the sea side, the bivalve species Cerastoderma glaucum and Amphipod Stenogammarus compersus were observed in all stations with an average 344.1 ± 11.6 and 7.77±55.9 n.m-2, respectively. The worm species Streblospio gynobranchiata with abundance of 33.3 ± 42.5 n.m-2 was found only in the estuary section. Among the Macro- invertebrates on the breakwater wall; the Mytilaster lineatus and Mytilopsis leucophoeata were found on the sea side and in the estuary side, respectively. Their abundance had not significantly difference in different seasons. The Amphipoda Melita mirzajanii and Hediste diversicolor were also frequent in the wall of breakwater with 4106±1878 and 495±110 n.m-2, respectively. The crustacean and worms had more abundant in summer 2018 than other seasons. According to ecological indices, species diversity was more in the sea side rather than the estuary side for both habitats; the sea substrate and the wall. Furthermore, the species diversity was more in the wall of breakwater rather than sea substrate. The artificial constructs such as breakwater have an important role to increase of the species diversity.
Language:
Persian
Published:
Journal of Animal Environment, Volume:11 Issue: 3, 2019
Pages:
319 to 326
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