2009
DOI: 10.1016/j.jembe.2008.10.017
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Physical disturbance and community organization on a subtidal cobble bed

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Cited by 17 publications
(14 citation statements)
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“…The instability of rocky bedrocks, due to hydrodynamic forces (tides, waves, currents, seasonal storms), can abrade and destroy canopy macroalgae on rock surfaces significantly affecting their distributions [22] , [50] , [51] , [52] . However, the impacts of human-induced physical modification of the habitat as possible drivers for both decline and prolonged lack of natural recovery of algal forests have been so far overlooked.…”
Section: Discussionmentioning
confidence: 99%
“…The instability of rocky bedrocks, due to hydrodynamic forces (tides, waves, currents, seasonal storms), can abrade and destroy canopy macroalgae on rock surfaces significantly affecting their distributions [22] , [50] , [51] , [52] . However, the impacts of human-induced physical modification of the habitat as possible drivers for both decline and prolonged lack of natural recovery of algal forests have been so far overlooked.…”
Section: Discussionmentioning
confidence: 99%
“…Changes within the physical habitat structure connected to timescales of seconds or minutes occur as cobbles are overturned by wave action. The frequent overturning of small-and medium-sized cobbles (up to 12 cm) has been investigated in intertidal areas [36,78] and in shallow subtidal zones (2-5 m water depth) [37,38]. Within SA1, we observed the overturning of a medium-sized cobble (Ø 20 cm, 3.5 m water depth) twice, during two different storm events when significant wave heights up to 1.3 m with H max ranging from 1.5 m to 2 m persisted over several days.…”
Section: Overturning Of Cobblesmentioning
confidence: 99%
“…Diverse studies on benthic community structure indicate a strong correlation between biodiversity and physical habitat structure [32][33][34][35], which can be assumed to be pronounced in the most dynamic shallow water environments. Several studies on hard substrates reveal physical disturbance as one of the primary forces influencing species diversity [36][37][38]. Overturning, as a physical process acting on cobbles, destroys macroalgae on the substratum surfaces and results in opportunities for new organisms to settle [36,39].…”
Section: Introductionmentioning
confidence: 99%
“…This instability of the substratum may result in frequent disturbance not suitable for the establishment of dense populations of structureforming organisms able to attract a variety of motile invertebrates. The role of natural disturbance in structuring marine communities has been well described in the intertidal (Dayton 1971;Lubchenco and Menge 1978;Sousa 1979Sousa , 1984Paine and Levin 1981) and shallow subtidal, especially for algae (Airoldi et al 1996;Airoldi 1998;Scheibling et al 2008). Disturbance due to the movement of rubble rocks might similarly affect the recruitment and persistence of mega-invertebrates in this habitat.…”
Section: Rubble Rocksmentioning
confidence: 99%