Exploring patterns of variation in amphipod assemblages at multiple spatial scales: natural variability versus coastal aquaculture effect

Aquaculture Environment Interactions

关键词: Environmental impact;    Fish farm;    Mediterranean;    Soft sediment;    Partially hierarchical model;    Components of variation;    dbRDA;   

DOI  :  10.3354/aei00054

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: A 5-factor design survey was carried out to examine the spatial distribution at different scales of amphipod assemblages and sedimentary variables in soft bottoms adjacent to coastal aquaculture installations. Natural variability of sediment variables showed the highest values at the scales of sites (10s of meters) and locality (1 to 10 km), while the greatest component of variation of amphipod assemblages occurred among replicates (on the scale of meters). Regarding the influence of coastal aquaculture, the highest variability of the environmental variables was observed among the different fish farms. On sandy localities, the influence gradient of coastal aquaculture was determined by total free sulphides, whilst, in muddy localities, the main variable was δ

【 授权许可】

CC BY