Show simple item record Richard B. en_US N. en_US V. S. en_US O. G. en_US 2009-10-19T14:42:46Z 2009-10-19T14:42:46Z 2004-09 en_US
dc.identifier en_US
dc.identifier.citation Kemp , R B , Shadrin , N , Mukhanov , V S & Naidanova , O G 2004 , ' The spring energy budget of the algal mat community in a Crimean hypersaline lake ' Aquatic Ecology , vol 38 , no. 3 , pp. 375-385 . , 10.1023/B:AECO.0000035169.08581.10 en_US
dc.identifier.other PURE: 122359 en_US
dc.identifier.other dspace: 2160/3255 en_US
dc.description.abstract The energy contents (standing stock) of the floating mat formed by the green alga Cladophora sivaschensis and the energy transfers through it were quantified for a shallow hypersaline lake (at Cape Khersones, Crimea, Ukraine) during the spring months. Appropriate direct calorimetric techniques were applied to: (i) measure the heat energy dissipated by the mat community and by the free bacterioplankton in the water column below it; and (ii) differentiate between the heat flows by the heterotrophic and the phototrophic components of the community. It was shown that Cladophora biomass reached a peak of 579.5 g C m–2, contributing more than 99.6% of the total mat community. Throughout the spring, the total bacterial energy transfer (6 to 23 mW m–2) was as little as 1.1 to 2.6% of the total heat dissipated by the microplankton community. The rest of the estimated heat energy (584 to 1488 mW m–2) was associated with Cladophora metabolism. In the spring community: (i) the rate of biomass accumulation in the lake photic layer significantly exceeded its heterotrophic mineralisation; (ii) the efficiency of the microbial loop was too low to process even a minor part of the accumulated organic matter. The microcalorimetric technique was shown to be a highly promising approach for further studies of natural microbial mats and biofilms, biological systems with complex metabolism that involves not only aerobic processes but also anaerobic catabolism under local hypoxic/microxic conditions. en_US
dc.format.extent 11 en_US
dc.relation.ispartof Aquatic Ecology en_US
dc.title The spring energy budget of the algal mat community in a Crimean hypersaline lake en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US

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