Amphipoda assemblages in a disturbed area (Alicante, Spain, Western Mediterranean)

摘要: The distribution and composition of Amphipoda assemblages were analysed off the coasts Alicante (Spain, Western Mediterranean), a disturbed area affected by several co-occurring anthropogenic impacts. Although differences among sampled stations mainly related to natural parameters, activities linked with changes in amphipod assemblages. Expansion Port Alicante, sewage outfall high salinity brine discharge could be causing disappearance amphipods at closer these disturbances. However, completion port enlargement works mitigatory dilution has led recovery assemblage. Among depth determines some species. While Siphonoecetes sabatieri was abundant shallow stations, Ampelisca spp., Photis longipes, Pseudolirius kroyeri, Apherusa chiereghinii Phtisica marina more deeper stations. Grain size percentage organic matter also influenced distribution, resulting species relative percentages different trophic groups. Species such as brevicornis, Perioculodes longimanus, Urothoe hesperiae elegans content fine sand. Carnivorous species, Oedicerotidae family, those low content, while detritivorous higher mud content. 62 identified three reported for first time from Spanish Mediterranean coast, two recorded second new found, (Centraloecetes) bulborostrum. These results confirm need further data on coast.