Benthic-pelagic coupling and nutrient cycling across an experimental eutrophication gradient
نویسندگان
چکیده
منابع مشابه
Effect of tidal resuspension on benthic–pelagic coupling in an experimental ecosystem study
To test the effect of sediment resuspension on the nutrient and ecosystem dynamics we performed a 4 wk experiment in three 1000 l shear-turbulence-resuspension-mesocosm (STURM) resuspension (R) tanks and three 1000 l non-resuspension (NR) tanks. All tanks contained defaunated muddy sediment and brackish estuarine water and had similar water-column turbulence intensities (~1 cm s–1), energy diss...
متن کاملEffects of macroalgal mats on sediment nutrient release and benthic-pelagic coupling
Nutrient loading, one of the most severe human impacts on coastal bays, leads to a range of ecological effects including the decline of seagrass beds and proliferation of macroalgal mats as well as other changes in nutrient cycling, oxygen levels and habitat quality. Here, I examined the effects of the presence of macroalgal mats on fine-scale nutrient and oxygen dynamics and benthic-pelagic co...
متن کاملBenthic primary production and nutrient cycling in sediments with benthic microalgae and transient accumulation of macroalgae
Annual rates of sediment denitrification and sediment–water fluxes of oxygen and nutrients were quantified at two shallow locations, Virksund and Ulbjerg, in the Limfjorden, Denmark. The sediment was sandy and colonized mainly by bivalves with a wet weight of 2,508 g m22 at Virksund and 572 g m22 at Ulbjerg. A benthic microalgal community was present throughout the year, and for 1–2 months in t...
متن کاملPhytoplankton food quality effects on gammarids: benthic–pelagic coupling mediated by an invasive freshwater clam
Benthic–pelagic couplingmediated by bivalves has been shown to increase the flow of energy towards the benthos. To assess the capability of clams to process and therewith modify the quality of pelagic food sources for subsequent use by benthic invertebrates, we conducted a growth experiment in which juvenile Gammarus roeseliiwere raised either directly on sedimented pelagic autotrophs (algae, c...
متن کاملAn algal carbon budget for pelagic-benthic coupling in Lake Michigan
A budget for algal carbon was constructed to quantify the magnitude and major pathways of pelagicbenthic coupling at a site in southeastern Lake Michigan. The flux of algal C to the benthos and the rate of carbon burial were estimated from sediment traps and dated sediment cores, respectively. Assimilation and respiration rates of Diporeia sp., an abundant benthic amphipod, and of sediment micr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1985
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps026207