We assessed the effects of 40 ocean outfalls on adjacent macrobenthic invertebrates. Data were obtained from a
review of gray and peer-review literature. Different parameters describing the outfall characteristics were compiled
(length,maximumdepth, treatment level, flow and organic matter mass discharged). Exposure towave action
was represented by significant wave height. The magnitude of the effect was categorized in three impact
levels and classified considering different ecological indicators. A theoretical predictive model was formulated
in which the lower the organic matter and the higher the energy of the system, the lower the benthic impact.
The main conclusion was that the general pattern of the succession of benthic communities brought about by
ocean outfalls fits themodel of Pearson–Rosenberg but with some deviations i) the probability of a significant impact
is much lower, ii) not all the successional stages occur and, iii) the magnitude of the changes are usually
lower.
We assessed the effects of 40 ocean outfalls on adjacent macrobenthic invertebrates. Data were obtained from areview of gray and peer-review literature. Different parameters describing the outfall characteristics were compiled(length,maximumdepth, treatment level, flow and organic matter mass discharged). Exposure towave actionwas represented by significant wave height. The magnitude of the effect was categorized in three impactlevels and classified considering different ecological indicators. A theoretical predictive model was formulatedin which the lower the organic matter and the higher the energy of the system, the lower the benthic impact.The main conclusion was that the general pattern of the succession of benthic communities brought about byocean outfalls fits themodel of Pearson–Rosenberg but with some deviations i) the probability of a significant impactis much lower, ii) not all the successional stages occur and, iii) the magnitude of the changes are usuallylower.
การแปล กรุณารอสักครู่..
