搜索结果: 1-15 共查到“海洋生物学 freshwater”相关记录33条 . 查询时间(0.031 秒)
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
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 ...
Benthic biogeochemical cycling, nutrient stoichiometry, and carbon and nitrogen mass balances in a eutrophic freshwater bay
Benthic biogeochemical cycling nutrient stoichiometry carbon and nitrogen mass balances eutrophic freshwater bay
2014/4/18
Green Bay, while representing only ~7% of the surface area and ~1.4% of the volume of Lake Michigan, contains one-third of the watershed of the lake, and receives approximately one-third of the total ...
Population dynamics of a freshwater calanoid copepod: Complex responses to changes in trophic status and climate variability
Population dynamics a freshwater calanoid copepod Complex responses changes in trophic status climate variability
2014/4/21
The long-term dynamics of the calanoid copepod Eudiaptomus gracilis were analyzed in Lake Constance, a deep lake that has been influenced strongly by changes in trophic status and climate variability ...
Oligopeptide chemotypes of the toxic freshwater cyanobacteriumPlanktothrixcan form subpopulations with dissimilar ecological traits
Oligopeptide chemotypes toxic freshwater cyano bacterium Plank subpopulations dissimilar ecological traits
2014/4/18
Nonribosomal oligopeptides were used as qualitative and quantitative markers to test whether populations of the toxic freshwater cyanobacterium Planktothrixcomprise subpopulations with dissimilar ecol...
Microzooplankton dominate carbon flow and nutrient cycling in a warm subtropical freshwater lake
Microzooplankton carbon flow nutrient cycling warm subtropical freshwater lake
2014/4/22
In a series of grazer-gradient and dilution microcosm experiments, we compared grazing and nutrient mineralization by naturally co-existing crustacean and microzooplankton assemblages from mesoeutroph...
Radically different scales of phylogeographic structuring within cryptic species of freshwater shrimp (Atyidae: Caridina)
different scales phylogeographic structuring cryptic species freshwater shrimp
2014/4/22
We compared the phylogeographic structures of four cryptic species of freshwater shrimp from the Caridina indistincta complex (Atyidae) in eastern Australia using sequences of the mitochondrial gene c...
Strong purifying selection in the silicon transporters of marine and freshwater diatoms
Strong purifying silicon transporters of marine freshwater diatoms
2014/4/22
Marine and freshwater diatoms show several important differences in silicon physiology. In addition to containing an order of magnitude more silica in their cell walls, freshwater diatoms also appear ...
Radium-226 accumulation in Florida freshwater mussels
Radium-226 accumulation Florida freshwater mussels
2014/4/22
Selected lakes in Hillsborough County, Florida have been hydrologically augmented with groundwater to offset stage declines caused by excessive pumping of the Floridan Aquifer. Augmentation water can ...
Efficacy of open-ocean ballast water exchange as a means of preventing invertebrate invasions between freshwater ports
open-ocean ballast water exchange preventing invertebrate invasion freshwater ports
2014/4/21
Ballast water is a major vector of nonindigenous species invasion globally. Mandatory ballast water exchange (BWE) was implemented for vessels carrying ballast water into the Great Lakes in 1993. Desp...
Biostabilization of cohesive sediment beds in a freshwater wave-dominated environment
Biostabilization of cohesive sediment beds a freshwater wave-dominated environment
2014/4/23
An assessment of bed sediment stability was carried out over biostabilized and nonbiostabilized cohesive sediment within a laboratory wave flume. Biofilms of 5, 9, and 15 d were grown over kaolinite, ...
Behavioral response as a predictor of seasonal depth distribution and vertical niche separation in freshwater phytoplanktonic flagellates
Behavioral response predictor of seasonal depth distribution vertical niche separation freshwater phytoplanktonic flagellates
2014/4/22
The distribution of phytoplanktonic flagellates in aquatic ecosystems has been widely attributed to a number of driving factors. In this study, we evaluated the influence of behavior on the daytime, s...
Effect of pH on growth, cell volume, and production of freshwater ciliates, and implications for their distribution
pH on growth cell volume production freshwater ciliates
2014/5/4
We investigated the effect of pH on growth, cell volume, and production of the freshwater ciliates Urotricha farcta, U. furcata, and U. castalia in laboratory cultures with Cryptomonas sp. as food. Ov...
Amphipod herbivory on the freshwater cyanobacterium Lyngbya wollei: Chemical stimulants and morphological defenses
Amphipod herbivory freshwater cyanobacterium Lyngbya wollei Chemical stimulants morphological defenses
2014/5/4
The freshwater cyanobacterium Lyngbya wollei forms dense mats in lentic systems throughout the southeastern United States and produces paralytic shellfish poisons (PSPs), such as saxitoxins, that coul...
Effects of cyanobacterial toxicity and morphology on the population growth of freshwater zooplankton: Meta-analyses of laboratory experiments
cyanobacterial toxicity morphology on the population growth freshwater zooplankton laboratory experiments
2014/5/4
We synthesized data from 66 published laboratory studies, representing 597 experimental comparisons, examining the effects of cyanobacterial toxicity and morphology on the population growth rate and s...
Residence time of a freshwater embayment connected to a large lake
Residence time freshwater embayment connected large lake
2014/5/13
The average length of time water remains within the boundaries of an aquatic system is a key parameter controlling the system’s biogeochemical behavior. This timescale, generally referred to as t...