Effect of a seagrass (Posidonia oceanica) meadow on wave propagation
نویسندگان
چکیده
منابع مشابه
Effect of a seagrass (Posidonia oceanica) meadow on wave propagation
We demonstrate the utility of using the equivalent bottom roughness for calculating the friction factor and the drag coefficient of a seagrass meadow for conditions in which the meadow height is small compared to the water depth. Wave attenuation induced by the seagrass Posidonia oceanica is evaluated using field data from bottom-mounted acoustic doppler veloci meters (ADVs). Using the data fro...
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Meadows of the endemic seagrass Posidonia oceanica are threatened in the Mediterranean due to a general deterioration of the light environment that becomes critical when light irradiance is insufficient to meet the carbon requirements of the system. Here, we conduct a 3 wk, in situ shading experiment (8 levels plus controls) to determine the threshold of irradiance for balanced metabolism in a ...
متن کاملField observations of wave-induced streaming through a submerged seagrass (Posidonia oceanica) meadow
[1] This paper reports the findings of a 2week field campaign designed to study wave-induced flows within a meadow of Posidonia oceanica at water depth 9m. Previous laboratory experiments suggest that waves induce a mean mass drift in the direction of wave propagation (“streaming”) through submerged canopies of vegetation. This paper provides the first field measurements of this wave-induced st...
متن کاملOrganic Carbon Metabolism and Carbonate Dynamics in a Mediterranean Seagrass (Posidonia oceanica) Meadow
We measured monthly dissolved oxygen (DO) changes in situ benthic incubations from March 2001 to October 2002 in a Posidonia oceanica meadow and unvegetated sediments of Magalluf Bay (Mallorca Island, Spain) to determine gross primary production (GPP), community respiration (R), and net community production (NCP). From June 2001 to October 2002, we also measured fluxes of dissolved inorganic ca...
متن کاملEffects of sediment sulfides on seagrass Posidonia oceanica meristematic activity
Seagrass meadows rank amongst the most productive ecosystems on Earth, growing along tropical and temperate coasts, where they have important structural and biogeochemical functions (Hemminga & Duarte 2000). Seagrasses are clonal plants, which expand into new areas vegetatively by adding modules produced by the meristems located at the rhizome apices, rendering seagrass demographics and product...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2012
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps09754