搜索结果: 1-15 共查到“理学 Community composition”相关记录20条 . 查询时间(0.096 秒)
Microbial Community Composition and the Effects of Trace Elements on Methanogenesis Associated with Deep Subsurface Coal
Biological sciences Coalbed methane Coal biodegradation Methanogenesis Trace elements
2015/1/28
Biogenic coalbed methane (CBM), an end product of anaerobic coal biodegradation, is a natural gas. It is generated and trapped in large quantities in deep, unmineable coalbeds. This dissertation descr...
Spatial distribution of intact polar lipids in North Sea surface waters: Relationship with environmental conditions and microbial community composition
Spatial distribution intact polar lipids North Sea surface waters Relationship with environmental conditions microbial community composition
2014/4/4
We characterized and quantified the intact polar lipid (IPL) composition of the surface waters of the North Sea and investigated its relationships with environmental conditions, microbial abundances, ...
Spatial distribution of intact polar lipids in North Sea surface waters: Relationship with environmental conditions and microbial community composition
Spatial distribution intact polar lipids North Sea surface waters Relationship with environmental conditions microbial community composition
2014/4/3
We characterized and quantified the intact polar lipid (IPL) composition of the surface waters of the North Sea and investigated its relationships with environmental conditions, microbial abundances, ...
Comparative effects of urea, ammonium, and nitrate on phytoplankton abundance, community composition, and toxicity in hypereutrophic freshwaters
Comparative effects of urea ammonium nitrate
2014/4/4
Dissolved nitrogen (N) as urea ([NH2
]2CO), nitrate (NO{
3
), and ammonium (NHz
4
) was added to naturally
phosphorus (P)-rich lake water (up to 175 mg P L21
) to test the hypotheses that pollu...
Microbial biomass and community composition in boreal lake sediments
boreal lake sediments Microbial biomas
2014/4/4
We used phospholipid fatty acids (PLFA) to determine microbial biomass and community structure in the
sediments of eight boreal lakes with different loadings of allochthonous organic carbon and total...
The interplay between bacterial community composition and the environment determining function of inland water bacteria
bacterial community composition the environment determining function inland water bacteria
2014/4/16
We hypothesized that habitats differing in water flow regime would differ in bacterial function either because of differences in the local environment, in bacterial community composition (BCC), or in ...
Methanogenic pathway, 13 C isotope fractionation, and archaeal community composition in the sediment of two clear-water lakes of Amazonia
isotope fractionation archaeal community composition
2014/4/16
We studied the methanogenic pathway and archaeal community composition in the sediment of two clearwater lakes, Lake Batata and Lake Mussura, in Amazonia. We measured CH4 production and d13
C of CO2,...
Effect of Saharan dust inputs on bacterial activity and community composition in Mediterranean lakes and reservoirs
Effect of Saharan dust inputs bacterial activity community composition Mediterranean lakes and reservoirs
2014/4/18
We assessed the effects of Saharan dust inputs of particulate matter (PM), total phosphorus (TP), total nitrogen, and water soluble organic carbon (WSOC) on bacterial abundance (BA) in two alpine lake...
Nitrification in Mono Lake, California: Activity and community composition during contrasting hydrological regimes
Nitrification in Mono Lake California Activity and community composition contrasting hydrological regimes
2014/4/21
Rates of nitrification, geochemical variables, and the associated ammonia oxidizer microbial community were investigated in the water column of Mono Lake, California, between August 2002 and August 20...
Influence of water-column depth and mixing on phytoplankton biomass, community composition, and nutrients
Influence of water-column depth mixing on phytoplankton biomass community composition nutrients
2014/4/21
We independently manipulated mixing intensity (strong artificial mixing vs. background turbulence) and water-column depth (2 m, 4 m, 8 m, and 12 m) in order to explore their separate and combined effe...
Dispersal limitations and history explain community composition of metaphyton in desert springs of the Bonneville Basin, Utah: A multiscale analysis
Dispersal limitations history metaphyton desert springs Bonneville Basin Utah multiscale analysis
2014/4/18
We examined patterns of metaphyton community composition from 150 sites in spring wetlands of the Bonneville Basin across three spatial scales: valleys, wetlands nested in valleys, and habitat types n...
Nitrification in Mono Lake, California: Activity and community composition during contrasting hydrological regimes
Nitrification in Mono Lake California Activity community composition hydrological regimes
2014/4/18
Rates of nitrification, geochemical variables, and the associated ammonia oxidizer microbial community were investigated in the water column of Mono Lake, California, between August 2002 and August 20...
Influence of water-column depth and mixing on phytoplankton biomass, community composition, and nutrients
water-column depth mixing phytoplankton biomass community composition nutrients
2014/4/18
We independently manipulated mixing intensity (strong artificial mixing vs. background turbulence) and water-column depth (2 m, 4 m, 8 m, and 12 m) in order to explore their separateand combined effec...
Nutrient quality drives differential phytoplankton community composition on the southwest Florida shelf
Nutrient quality drives differential phytoplankton community composition southwest Florida shelf
2014/4/22
During May 2003, the dry season, the southwest Florida shelf was surveyed for nutrient concentrations and phytoplankton community composition concurrently with plankton nutritional and physiological s...
Partitioning of organic production in marine plankton communities: The effects of inorganic nutrient ratios and community composition on new dissolved organic matter
Partitioning of organic production marine plankton communities The effects of inorganic nutrient ratios community composition new dissolved organic matter
2014/4/23
We investigated the partitioning of carbon, nitrogen, and phosphorus between particulate and dissolved production using 11-m3 marine mesocosms (bags) in a Norwegian fjord with a salinity of 28.3, a ch...