2 edition of Determinants of sedimentary microbial biomass and community structure in two temperate streams found in the catalog.
Determinants of sedimentary microbial biomass and community structure in two temperate streams
Susan Dee Sutton
Written in English
|Statement||by Susan Dee Sutton|
|The Physical Object|
|Pagination||xi, 166 leaves :|
|Number of Pages||166|
Fernando A. Solís-Domínguez, Alexis Valentín-Vargas, Jon Chorover and Raina M. Maier, Effect of arbuscular mycorrhizal fungi on plant biomass and the rhizosphere microbial community structure of mesquite grown in acidic lead/zinc mine tailings, Science of . ABSTRACT. The major North American source of alginate is Macrocystis from area, standing crop and yield in California have varied greatly, e.g., from a maximum of , wet tons f ha in to a minimum of T f ha in to recent tonnages of about , to, in , 47, T from 4, hectares.
The specific objectives of this study were to: 1) determine if abiotic gradients control three key bacterial characteristics; microbial biomass, diversity, and community structure and composition in the Dry Valleys, and 2) to understand how these controls vary at local and regional scales to test the scale dependence of these relationships in a. Several studies have used PLFA profiles to investigate longitudinal variation within streams or the impacts of anthropogenic stress on microbial community structure (e.g., see references 5 and 36), but we are unaware of any other studies comparing variation in sedimentary microbial and bacterial community structure across streams. Two studies.
Sedimentary Sequences A sequence is a vertical succession of sedimentary structures that represents a change in depositional conditions over a period of time. Virtually every depositional environment can be distinguished by its characteristic sequence of deposition and sedimentary structures. biomass and the ratio of fungal biomass to total microbial biomass. But there were no signiﬁcant relationships between the CO 2 and CH 4 normalized efﬂux in the sampling sediment and the biomasses of microbial groups. These results suggest that we could manage GHG emissions by considering the factors regulating microbial biomass in the lake.
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Two community based microbiological measurements, namely, community level physiological profiling (CLPP) using Biolog sole C source utilization tests and phospholipid fatty acid (PLFA) profiles, were used to investigate the microbial ecology of these soils and to determine how land use alters microbial community structure.
Microbial biomass-C. The measurement of lipid phosphate is proposed as an indicator of microbial biomass in marine and estuarine sediments. This relatively simple assay can be performed on fresh, frozen or frozen-lyophilized sediment samples with chloroform methanol extraction and subsequent phosphate determination.
The sedimentary lipid phosphate recovery correlates with the extractible ATP and the Cited by: The objectives of this study were (1) to compare soil microbial biomass, activity, and community structure in vegetable systems between greenhouse and open field conditions under both conventional and organic management strategies and (2) to determine whether soil chemical parameters and microbial properties were by: DOM quantity and quality are key determinants of microbial community structure in streams and have been linked to changes in community abundance and composition.
microbial communities is rather limited. Hence, the present study was carried out to determine the distribution of bacterial biomass and community structure in the present study area, where the problems of eutrophication and or-ganic pollution are acute. The distribution of microbial biomass and its community structure are also discussed in.
Total microbial biomass and microbial community structure were responding to environmental determinants, sediment grain size, depth of sediment, and pollution due to petroleum hydrocarbons. The marker fatty acids of microeukaryotes and prokaryotes - aerobic, anaerobic, and sulfate-reducing bacteria -were detected in sediments of the areas studied.
Microbial Biomass and Community Composition Involved in Cycling of Organic Phosphorus in Sediments of Lake Dianchi, Southwest China Yuanrong Zhu a, Fengchang Wu, Yong Liub, Yuan Wei, Shasha Liu a, c, Weiying Feng, and John P. Giesy,d aState Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; bSchool of.
Canonical correspondence analysis identified salinity as a major environmental factor structuring the microbial community in the sediment along the successional series. Meanwhile, temperature and. SUMMARY. Periphyton chlorophyll a and ash free dry weight (AFDW) were monitored in nine rivers to examine the relative importance of flows and nutrients for regulating periphyt.
microbial biomass C and N over a wide range of soil types (see Figure 1 below). On average, the sCSE method rendered approximately 30% less biomass C and N extractable than the traditional CFE method.
The two techniques had similar levels of variability between sample replicates in extractable microbial biomass C and N (average coefficients. Little is known about the relative importance of spatial and environmental factors to structuring aquatic and sedimentary microbial biogeography in lakes.
Here, we investigated the microbial community composition (MCC) of the water (n = 35) and sediment (n = 35) samples from 16 lakes in western China (salinity: freshwater to salt saturation; pairwise geographical distance: 9– km) using.
Microbial biomass, community structure and nutritional status 2. Signature lipid biomarker techniques The SLB analysis provides quantitative insight into important attributes of microbial communities.
(a) Viable biomass The determination of the total phospholipid ester-linked fatty acids (PLFA). Depositional Environments and Sedimentary Basins Sediments accumulate in a wide variety of environments, both on the continents and in the oceans. Some of the more important of these environments are illustrated in Figure Figure Some of the important depositional environments for sediments and sedimentary rocks.
microbial biomass and physico-chemical properties of the soil. The mean microbial biomass carbon (MBC) value were, and μg g −1 of soil, respectively, for urban, sub-urban and rural sections of the gradient. Whereas, the mean microbial biomass nitrogen (MBN) was.
subseaﬂoor sedimentary microbial abundance to be cells [corresponding to petagram (Pg) C and ∼% of Earth’s total living biomass]. This estimate of subseaﬂoor sedimentary microbial abundance is roughly equalto previousestimates of totalmicrobial abundance in seawater and total microbial abundance in soil.
It is. Previous studies indicate that microbial community composition varies from one marine environment to another (Delong et al., ; Zinger et al., ; Hamdan et al., ), but can be relatively. Basanta et al Microbial community structure and biomass of a mine soil ournal of Soil Science and Plant utrition, 21 1 4 Table 1.
Phytomass yields (g pot-1) and soil pH of the mine soil with different rehabilitation treatments after 5 months (mean values of four pot replicates).
Treatments: C, control; I, inorganic fertilizer; P, inorganic fertilizer. Biotic responses to drought and flooding in tropics are similar to those in temperate streams while in-stream productivity is limited by the same factors: nutrients, shading, disturbance, and trophic structure.
Wide variation in climate, geomorphology, landscape evolution, and geological history across tropical zones potentially mask patterns. Microbial biomass ninhydrin-N, and microbial community structure evaluated by phospholipid fatty acids (PLFAs), were measured at 0 (control soil only), 5, 25 and 50 days and CO2 evolution up to.
In contrast, organic matter and nutrient inputs were reported to have little effect on microbial community structure in the coastal sediment of south Florida (Bourque et al., ). Salinity generally reduced diversity (Baldwin et al., ) and microbial biomass (Rousk et al., ) and changed microbial community structure (Yu et al., ).
Harrison B. Taylor, Harry D. Kurtz, Microbial community structure shows differing levels of temporal stability in intertidal beach sands of the grand strand region of South Carolina, PLOS ONE, /, 15, 2, (e), ().
Several studies have used PLFA profiles to investigate longitudinal variation within streams or the impacts of anthropogenic stress on microbial community structure (e.g., see references 5 and 36), but we are unaware of any other studies comparing variation in sedimentary microbial and bacterial community structure across streams.
Two studies.Exercise Interpretation of Past Environments. Sedimentary rocks can tell us a great deal about the environmental conditions that existed during the time of their formation.
Make some inferences about the source rock, weathering, sediment transportation, and deposition conditions that existed during the formation of the following rocks.