The persistent spatial patchiness of limpet grazing
نویسندگان
چکیده
منابع مشابه
Limpet grazing on a physically stressful Patagonian rocky shore
Many theories of consumer control of communities have come from studies conducted in relatively benign, temperate zone rocky intertidal systems. Here, we examine gastropod grazing and the maintenance of bare space on a dry, wind-swept rocky shore of Patagonia, Argentina. Two limpet species are the primary intertidal grazers. Siphonaria lessoni dominates mid and high intertidal zones, while Nace...
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Sediments are likely to influence the distribution of limpets and dominant sessile species on intertidal rocky shores by smothering and interfering with feeding activity. This hypothesis was tested by field observations and laboratory experiments in which the effects of different amounts and grain sizes of sediments on the grazing and survival of the limpet Patella vulgata L. were measured. On ...
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Here we describe a browser that provides a two and a half dimensional viewing mechanism for persistent data structures. The browser is an adaptive program which learns about its environment; this knowledge is stored in the persistent object store. It achieves this by making use of a compiler that is a dynamically callable data object in the environment. Other novel features of the design of the...
متن کاملEuropean-scale analysis of seasonal variability in limpet grazing activity and microalgal abundance
The film of microalgae and macroalgal propagules which coats intertidal rocks is the main food resource of limpets, the dominant grazers on exposed shores of north-west Europe. Spatial and temporal variability in feeding activity of limpets and abundance of microalgae were examined at mid-tide level across a European gradient from the Isle of Man in the British Isles to south-west Portugal. Fee...
متن کاملInteraction between a fucoid canopy and limpet grazing in structuring a low shore intertidal community
The relative roles of a macroalgal canopy, Fucus serratus L., and a grazer, Patella vulgata L., in structuring a low shore community of a sheltered, rocky intertidal site were examined using a factorial experimental design. Canopy removal and grazer exclusion treatments were used to determine the effects of both factors on the understorey community. Re-establishment of the canopy was studied in...
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ژورنال
عنوان ژورنال: Journal of Experimental Marine Biology and Ecology
سال: 2008
ISSN: 0022-0981
DOI: 10.1016/j.jembe.2008.08.006