« Effects of periodic disturbances from trampling on rocky intertidal algal beds »
نویسندگان
چکیده
منابع مشابه
Effects of eutrophication, grazing, and algal blooms on rocky shores
Eutrophication can profoundly change rocky shore communities. These changes often cause the replacement of perennial, canopy-forming algae such as Fucus spp. with annual, bloom-forming algae such as Enteromorpha spp. Grazing, however, can counteract eutrophication by eliminating the annual algae’s susceptible recruits. We examine these generalizations across large scales. We use replicated ‘‘bi...
متن کاملThe study of seaweeds biomass from intertidal rocky shores of Qeshm Island, Persian Gulf
Rocky shores are one of the most important habitats of marine environment in coastal areas. They host marine organisms including seaweeds because of existence of strong and stable substrate for their growths. Intertidal rocky shores are a prominent feature on coastal areas of Qeshm Island located at the northern part of Strait of Hormuz. In order to study biomass of seaweeds on rocky intertidal...
متن کاملEffects of human trampling on a rocky shore fauna on the Sao Paulo coast, southeastern Brazil.
Increased tourist activity in coastal regions demands management strategies to reduce impacts on rocky shores. The highly populated coastal areas in southeastern Brazil are an example of degradation caused by development of industry and tourism. Among different shore impacts, trampling has been intensively studied, and may represent a significant source of stress for intertidal fauna. A randomi...
متن کاملHuman exclusion from rocky intertidal of Las Cruces, central Chile: effects on Durvillaea antarctica (Phaeophyta, Durvilleales)
On the exposed rocky shores of central Chile there exists a continuous small-scale harvesting of bull-kelp Durvillaea antarctica, by 'mariscadores' (shellfish and algae gatherers). These harvest both fronds and stipes for human consumption. To assess the effects of human activity on D. antarctica populations, the density, standing crop and size structure of the kelp were compared in nonharveste...
متن کاملSea Otters Homogenize Mussel Beds and Reduce Habitat Provisioning in a Rocky Intertidal Ecosystem
Sea otters (Enhydra lutris) are keystone predators that consume a variety of benthic invertebrates, including the intertidal mussel, Mytilus californianus. By virtue of their competitive dominance, large size, and longevity, M. californianus are ecosystem engineers that form structurally complex beds that provide habitat for diverse invertebrate communities. We investigated whether otters affec...
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ژورنال
عنوان ژورنال: Nature Sciences Sociétés
سال: 1998
ISSN: 1240-1307
DOI: 10.1016/s1240-1307(98)80057-5