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Response of freshwater microcosm communities to nutrients, fish, and elevated temperature during winter and summer
Response of freshwater microcosm communities nutrients, fish elevated temperature winter and summer
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2014/5/20
Under conditions of stress, shallow freshwater ecosystems can undergo a state change characterized by the rapid loss of macrophytes and subsequent dominance of phytoplankton. Elevated water temperatur...
Effects of microalgal communities on reflectance spectra of carbonate sediments in subtidal optically shallow marine environments
Effects of microalgal communities reflectance spectra carbonate sediments subtidal optically shallow marine environments
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2014/5/19
This study was conducted in subtidal areas around Lee Stocking Island, Bahamas, to investigate how microalgal biomass and community structure affect hyperspectral reflectance of sediments. Hyperspectr...
Modeling spectral discrimination of Great Barrier Reef benthic communities by remote sensing instruments
Modeling spectral discrimination Great Barrier Reef benthic communities remote sensing instruments
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2014/5/19
Remote sensing can monitor coral reef health, provided the benthic substrates are spectrally resolvable through the water column and surface. We studied the separability of eight substrate types (live...
Cell viability in natural phytoplankton communities quantified by a membrane permeability probe
Cell viability natural phytoplankton communities quantified membrane permeability probe
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2014/5/27
A nonstaining method, based on the digestion of dead cells, the membranes of which are permeable when exposed to an enzymatic cocktail (DNAse I and Trypsin), was used to identify living cells in cultu...
Cycling of phosphorus maintains the production of microphytobenthic communities in carbonate sediments of a coral reef
Cycling of phosphorus maintains production of microphytobenthic communities carbonate sediments coral reef
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2014/5/27
The phosphorus (P) cycle that maintains the production of microphytobenthic communities in carbonate sediments was investigated in the fringing Shiraho coral reef system located off the east coast of ...
Peptide hydrolysis, amino acid oxidation, and nitrogen uptake in communities seasonally dominated by Aureococcus anophagefferens
Peptide hydrolysis amino acid oxidation nitrogen uptake communities seasonally Aureococcus anophagefferens
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2014/5/27
Elevated levels of dissolved organic nitrogen (DON) and dissolved inorganic nitrogen (DIN) are among the factors implicated in the initiation of algal blooms. However, the degree to which phytoplankto...
Variability and control of carbon consumption, export, and accumulation in marine communities
Variability control carbon consumption export accumulation marine communities
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2014/5/26
Elucidating the extent and controls of the routes followed by primary production in marine communities (i.e., consumption by herbivores, decomposition, transportation of plant material beyond the comm...
Linking the physiologic and phylogenetic successions in free-living bacterial communities along an estuarine salinity gradient
Linking the physiologic phylogenetic successions free-living bacterial communities estuarine salinity gradient
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2014/5/26
In this paper we assess whether the bacterial compositional succession that occurs along an estuarine salinity gradient is accompanied by changes in both community and single-cell metabolic activity i...
Compositional changes in free-living bacterial communities along a salinity gradient in two temperate estuaries
Compositional changes free-living bacterial communities salinity gradient two temperate estuaries
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2014/5/26
There is now clear evidence for major differences in heterotrophic bacterial composition between freshwater and marine ecosystems. A fundamental question that remains unresolved is whether the composi...
Assessment of the relationships between dominant cell size in natural phytoplankton communities and the spectral shape of the absorption coefficient
Assessment of the relationships dominant cell size in natural phytoplankton communities the spectral shape of the absorption coefficient
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2014/5/26
Size-fractionated chlorophyll concentration and phytoplankton absorption spectra were compared for a wide variety of natural communities. We found that, in general, when phytoplankton abundance increa...
Landscape effects of climate, agriculture, and urbanization on benthic invertebrate communities of Canadian prairie lakes
Landscape effects of climate, agriculture, and urbanization benthic invertebrate communities Canadian prairie lakes
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2014/5/26
Paleoecological analyses of fossil chironomid assemblages from eight lakes of the Qu’Appelle Valley, Saskatchewan, Canada, were used to quantify the relative influence of climate, resource use, a...
Seasonal Variations in the Biomass of Macro-Algal Communities from the Gulf of Antalya (north-eastern Mediterranean)
Macro-algal communities Biomass Mediterranean Sea Gulf of Antalya
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2010/3/22
In this study, the seasonal variations in the macro-algal biomass in the Gulf of Antalya (north-eastern Mediterranean) were investigated. The seasonal variations of the macro-algal biomass were found...
The interaction between physical disturbance and organic enrichment: An important element in structuring benthic communities
physical disturbance organic enrichment structuring benthic communities
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2014/6/10
The interaction between physical disturbance and organic enrichment, with respect to its effect on the diversity and community structure of a macroinfaunal assemblage, has been examined in a benthic m...
The relative importance of fish predation and excretion effects on planktonic communities
fi sh predation planktonic communities
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2014/6/9
The effects of planktivorous fish on lower trophic levels through predation on zooplankton and nutrient excretion
were experimentally separated and their relative importance quantified in...
Formation of Banded Iron-Manganese Structures by Natural Microbial Communities
Bacteria Banded Fe-Mn Structure Biomats Biomineralization Zebra Architecture
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2011/12/6
Abstract: Microbial structures in the form of banded zebra patterns have been found as periodic iron-manganese layers in living biomats on the coast of Satsuma-Iwo Jima, a small volcanic island near s...