搜索结果: 1-15 共查到“知识库 理学 Freshwater”相关记录116条 . 查询时间(0.161 秒)
Using multivariate adaptive regression splines to predict the distributions of New Zealand’s freshwater diadromous fish
distribution environment fish fresh-water MARS
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2015/8/21
Relationships between probabilities of occurrence for fifteen diadromous fish species and environmental variables characterising their habitat in fluvial waters were explored using an extensive collec...
Interannual to Interdecadal Salinity Variations Observed Near Hawaii:Local and Remote Forcing by Surface Freshwater Fluxes
Interdecadal Salinity Variations Observed Near Hawaii Local and Remote Forcing Surface Freshwater Fluxes
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2015/7/20
Ray Schmitt's introduction to this issue underlines the importance of including the oceanic component of the hydrological cycle in considerations of Earth's climate. Spatial and temporal salinity vari...
Lake in a Bottle:A Laboratory Demonstration of the Unusual Stability Properties of Freshwater
Lake in a Bottle Unusual Stability Properties Freshwater
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2015/7/13
Using simple laboratory gear, students can simulate the stratification properties of a freshwater lake and the impact of salt on the relationship between temperature and density. Because some students...
The Temporal Variability of the Freshwater Discharge and Water Levels at the Patos Lagoon, Brazil
Freshwater Discharge El Niñ o La Niñ a Wavelet Analyzes
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2013/3/11
The direct influence of freshwater discharge along the coastal regions is observed in several processes following a wide spectrum on spatial and temporal variability. The knowledge of relative importa...
Uncoupling of chitinase activity and uptake of hydrolysis products in freshwater bacterioplankton
chitinase activity uptake of hydrolysis products freshwater bacterioplankton
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2014/4/8
We investigated to what extent chitinolytic bacteria subsidize bacterial populations that do not produce chitinolytic enzymes but still use the products of chitin hydrolysis. Applying single-cell tech...
Reconstructing the various facets of dissolved organic carbon bioavailability in freshwater ecosystems
Reconstructing freshwater ecosystems
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2014/4/4
We explored various aspects of freshwater dissolved organic carbon (DOC) lability by comparing short-term
(, 2 d) bacterial C consumption (STCC; derived from bacterial respiration measurements) with ...
Different photolysis kinetics at the surface of frozen freshwater vs. frozen salt solutions
Different photolysis kinetics frozen freshwater frozen salt solutions
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2010/11/30
Reactions at air-ice interfaces can proceed at very different rates than those in aqueous solution, due to the unique disordered region at the ice surface known as the quasi-liquid layer (QLL) . The p...
Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review
dissolved organic matter dynamics A review
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2014/4/17
The biochemical composition of dissolved organic matter (DOM) strongly influences its biogeochemical role in
freshwater ecosystems, yet DOM composition measurements are not routinely incorporated int...
Interspecies differences in calcium content and requirement in four freshwater cladocerans explained by biokinetic parameters
Interspecies differences in calcium content in four freshwater cladocerans explained biokinetic parameters
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2014/4/17
We tested the hypothesis that cladocerans with higher calcium (Ca) content are more susceptible to Ca limitation by conducting life table experiments using four cladoceran species with contrasting Ca ...
We examined the dispersal of larvae (glochidia) of a common unionid mussel species, Actinonaias ligamentina,
which need to attach to a host fish in order to develop into juveniles, in a lowland river...
Molybdenum–nitrogen co-limitation in freshwater and coastal heterocystouscyanobacteria
coastal heterocystous cyanobacteria
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2014/4/16
Molybdenum (Mo) is essential for the biological assimilation of inorganic nitrogen (N). We compared Mo
requirements for N2
-fixation in two species of filamentous heterocystous cyanobacteria (HC) to...
Seasonal variations in the concentrations of methyl and ethyl nitrate in ashallow freshwater lake
Seasonal variations in the concentrations methyl ethyl nitrate in a shallow freshwater lake
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2014/4/16
Between February and October 2007, a time series of alkyl nitrate concentrations in the water column of a shallow freshwater lake, University of East Anglia Broad, located in southeastern England was ...
Ecological Succession of Freshwater Ostracoda (Crustacea) in A Newly Developed Rheocrene Spring (Bolu, Turkey)
Ostracoda succession spring water ecology cosmopolitan pseudorichness
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2010/3/25
Six species of ostracod (Candona neglecta, Heterocypris incongruens, Ilyocypris bradyi, Darwinula stevensoni, Pseudocandona compressa, and Psychrodromus olivaceus) were collected from a newly develope...
Additional contribution to the study of the freshwater fauna of testate amoebae in southeast Azerbaijan
Freshwater testate amoebae fauna Azerbaijan
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2010/3/24
Investigations of the inland water bodies of southeast Azerbaijan (mainly near the city of Lenkoran and its suburbs) yielded 11 additional species of freshwater testate amoebae. Among these, 7 species...
A macro-tidal freshwater ecosystem recovering from hypereutrophication: the Schelde case study
A macro-tidal freshwater ecosystem hypereutrophication the Schelde case study
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2010/1/21
We report a 40 year record of eutrophication and hypoxia on an estuarine ecosystem and its recovery from hypereutrophication. After decades of high inorganic nutrient concentrations and recurring anox...