Bacterial and algal heterotrophy in lakes.
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Bacterial and algal heterotrophy in lakes.

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Published .
Written in English

Book details:

The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL19579284M

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The chapter further reviews the bacterial community composition of various lakes, novel species obtained from these lakes, and the dominant phyla (Actinobacteria, Cyanobacteria, Acidobacteria, Caldeserica, Calditrichaeota, Verrucomicrobia, Chlorobi, Planctomycetes, Nitrospirae, Chloroflexi, Bacteriodetes, Firmicutes, and Proteobacteria) found in these freshwater ecosystems. B. The Role of Algal Heterotrophy in Benthic Microbial Carbon Cycling. In addition to being a survival mechanism for algae temporarily subjected to dark, algal heterotrophy is a potentially interesting consideration in the flow of carbon through aquatic food webs. Although it is widely accepted that algal photosynthate can be an important source of DOC to aquatic bacteria, it is unclear to what extent algal facultative heterotrophs . In the Great Lakes, Moll and Brahce () con cluded that algae were responsible for a significant portion of dark heterotrophy measured in Lake Michigan. Of particular interest in the Lake Michi gan study was evidence of potential temporal and spatial resource partitioning by bacteria and by: 5. Bacterial abundances and metabolic activity were related to chlorophyll concentrations, nutrient concentrations, and the physical environment in the vicinity of the Grand River discharge into Lake Michigan. The results show that bacteria and phytoplankton displayed almost opposite seasonal and spatial by:

Abstract. Rates of phytoplankton photosynthesis, extracellular release of dissolved organic matter (DOM), and the assimilation of DOM by bacterioplankton during in situ incubation were measured in the Rhode River estuary. Phytoplankton photosynthesis was in the range of 3 to μg C hThe release of DOM appeared to be inversely related to the photosynthetic activity of by: 8. autotrophs and growth efficiencies of bacteria, favor greater carbon sequestration by macrophyte-rich shallow lakes. All of my observations form a basis for future work into the ability of shallow lakes to sequester CO 2 and stresses the importance of not only saving shallow lakes and wetlands, but preserving them in a macrophyte-rich state. Moll () and Moll and Brahce () have shown dark heterotrophy by Lake Michigan phytoplankton is an important mechanism accounting for more than of glucose uptake. Haffner et al. () reported significant dark glu cose uptake by Lake Ontario by: 2. Here we test this hypothesis by tracking the production and isotopic signature of bacterial respiratory CO 2 in 2 week lake water incubations and use the resulting data to reconstruct and model the bacterial consumption dynamics of algal and terrestrial DOC. The proportion of algal DOC respired decreased systematically over time in all Cited by:

Dec 02,  · The Blue-Green Algae attempts to assemble a unified picture of blue-green algae as living organisms. It describes the organism’s general features of form and structure, cellular organization, cell biology, gas vacuoles, and movements. The book addresses the culture, nutrition, growth, photosynthesis, chemosynthesis, heterotrophy, respiration, nitrogen metabolism, differentiation 1/5(1). Bacterial production and their contribution to the grazer food chain, in Tilzer, M.M. and Serruya, C. (editors), Ecological Structure and Function in Large Lakes. Science Tech Publishers, Madison. Science Tech Publishers, by: Aug 16,  · It's not the algae, per se. It's bacteria that glom onto the blue-green algae – what's known as bacterium can come in three forms, all of which are toxic in varying degrees – one form irritates the skin, one effectively shuts down the body by poisoning the liver, and one shuts down the body by severing the connection between the brain and the lungs, causing paralysis and. Mar 01,  · Bacteria and fungi were rapidly stimulated by exposure to light, thus establishing the potential for algal priming of microbial heterotrophic decay activities. Experimental incubations of decaying litter with 14 C- and 13 C-bicarbonate established that inorganic C fixed by algal photosynthesis was rapidly transferred to and assimilated by.