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Algae (14):
Recent article
Algae
Kidney International (78)10 2010
Abstract
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Kidney International (78)10 2010
Abstract
Kidney International (78)10 2010
Abstract
Bioresource Technology (101)15 2010
Abstract
The present study aimed at investigating the carbon metabolism in terms of carbon dioxide fixation and its destination in microalgae cultivations. To this purpose, analysis of growth parameters, media of cultivation, biomass composition and productivity and nutrients balance were performed. Four mic...
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PMID: 20350804
PDF is available here.
PDF is available here.
Abstract
I and probably other complexes. The ndh genes are absent in all sequenced plastid DNAs of algae except for the Charophyceae and some Prasinophyceae. With the possible exclusion of some Conifers and Gnetales, the plastid DNA of all photosynthetic land plants contains the ndh genes, whereas they are a...
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PMID: 20493721
PDF is available here.
PDF is available here.
Abstract
We assess the relationship between sediment organic carbon mineralization and temperature in a cross-system survey of boreal lakes in Sweden, and with input from a compilation of published data from a wide range of lakes that differ with respect to climate, productivity and organic carbon source. We...
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PMID: 20651689
PDF is available here.
PDF is available here.
Abstract
We show that steadily rising SSTs, not ocean acidification, are already driving dramatic changes in the growth of an important reef-building coral in the central Red Sea. Three-dimensional computed tomography analyses of the massive coral Diploastrea heliopora reveal that skeletal growth of apparent...
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PMID: 20647466
PDF is available here.
PDF is available here.
Biofouling (26)5 2010
Abstract
The present study tested two diver-operated rotating brush systems, coupled with suction and collection capabilities, to determine their efficacy in the management of vessel biofouling. Both rotating brush systems proved effective (> 80%) in removing low-to-moderate levels of fouling from flat and c...
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PMID: 20526980
PDF is available here.
PDF is available here.
Abstract
We experimentally show that the interaction between dispersal rate and the presence of an environmental gradient with on-average lower resource availability than the homogeneous control treatment affects diversity. In metacommunities of nine co-occurring species of marine benthic microalgae we facto...
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PMID: 20715625
PDF is available here.
PDF is available here.
Abstract
We manipulated the patch size and surface area of experimental mimics of macro-algae to test several models that can explain the relationship between abundance and species richness of assemblages colonizing different habitats. Our results show that patch size and structural complexity have independe...
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PMID: 20715609
PDF is available here.
PDF is available here.
Plant Physiology (153)3 2010
Abstract
We present here an updated and comprehensive classification of the bHLHs encoded by the whole sequenced genomes of Arabidopsis (Arabidopsis thaliana), Populus trichocarpa, Oryza sativa, Physcomitrella patens, and five algae species. We define a plant bHLH consensus motif, which allowed the identific...
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PMID: 20472752
PDF is available here.
PDF is available here.
Abstract
We compare nutrient concentrations, transparency gradients, algal biomass, and fossil diatom species richness in two sets of high-elevation lakes: those fed by snowpack melt alone (SF lakes) and those fed by both glacial and snowpack meltwaters (GSF lakes). We found that nitrate (NO(3)(-)) concentra...
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PMID: 20527763
PDF is available here.
PDF is available here.
Abstract
Chitosan, a natural polysaccharide, is widely regarded as a biocompatible and potential carrier for controlled-release drug formulations. However, the potential effect of chitosan on the environmental behavior of contaminants is poorly understood, especially on chiral chemicals. In this study, the c...
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PMID: 20536147
PDF is available here.
PDF is available here.
Abstract
Mesophotic coral ecosystems that occur at depths from 30 to 200 m have historically been understudied and yet appear to support a diverse biological community. The microbiology of these systems is particularly poorly understood, especially with regard to the communities associated with corals, spong...
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PMID: 20402776
PDF is available here.
PDF is available here.
Abstract
Global climate and the atmospheric partial pressure of carbon dioxide () are correlated over recent glacial cycles, with lower during ice ages, but the causes of the changes are unknown. The modern Southern Ocean releases deeply sequestered CO(2) to the atmosphere. Growing evidence suggests that the...
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PMID: 20596012
PDF is available here.
PDF is available here.
Abstract
Along the evolutionary path from single cells to multicellular organisms with a central nervous system are species of intermediate complexity that move in ways suggesting high-level coordination, yet have none. Instead, organisms of this type possess many autonomous cells endowed with programs that...
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PMID: 20534560
PDF is available here.
PDF is available here.
Abstract
Algal-based immobilization process was applied to treat the effluent from a secondary wastewater treatment plant. Batch test proved that algae could attach onto fiber-bundle carrier in 7 days, and then the algal-based immobilization reactor could reduce TN (total nitrogen) and TP (total phosphorus)...
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PMID: 20334971
PDF is available here.
PDF is available here.
Abstract
We further explore the application of polyDADMAC as a bubble modifier in this adapted DAF process. It was determined that removal improved with increasing polyDADMAC molecular weight (MW). Removal efficiencies obtained for Microcystis aeruginosa were much greater than those predicted theoretically,...
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PMID: 20586240
PDF is available here.
PDF is available here.
Bioresource Technology (101)11 2010
Abstract
Sterols have been extracted and analysed from Dunaliellatertiolecta and Dunaliella salina, in order to evaluate a potentially novel industrial exploitation of these microalgae as source of phytosterols. The effect of salt concentration on sterols yields has been studied varying the quantities of NaC...
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PMID: 20110165
PDF is available here.
PDF is available here.
Journal of Parasitology (96)3 2010
Abstract
We use high-speed (500 frames/sec) videography to study how Bd-induced mouthpart deformities affect the feeding kinematics of Fowler's toad (Anaxyrus [= Bufo] fowleri ) and grey tree frog (Hyla chrysoscelis) tadpoles. We tested for species-specific patterns of Bd-induced mouthpart deformities to ass...
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PMID: 20557202
PDF is available here.
PDF is available here.
Abstract
We explore one aspect of this question by expanding the theory of predator-mediated coexistence to include the potential role of facilitation between the predator and inferior competitor. To motivate and illustrate our simple model, we focus on sea-urchin-algae interactions in temperate rocky reef s...
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PMID: 20583717
PDF is available here.
PDF is available here.
Abstract
We modeled a multispecies predator-prey system with functionally different predator and prey species based on observations of the community dynamics of ciliates and their algal prey in Lake Constance. The model accounted for differences in predator feeding preferences and prey susceptibility to pred...
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PMID: 20583716
PDF is available here.
PDF is available here.
Antiviral Research (86)3 2010
Abstract
Available treatments for many infectious diseases are limited. In particular, diseases caused by viral pathogens have demonstrated the need for new medicines, due to the increasing appearance of resistance to these available treatments. Thousands of novel compounds have been isolated from various ma...
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PMID: 20338196
PDF is available here.
PDF is available here.
Meat Science (85)2 2010
Abstract
Previous work pointed out the possibility to enhance the nutritional value of meat products using long chain omega-3 PUFA enriched emulsions. Oil-in-water emulsions elaborated with a mixture of algae and linseed oils (15:10) in order to be used as functional ingredient were stabilized with BHA (buty...
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PMID: 20374914
PDF is available here.
PDF is available here.
Metabolic Engineering (12)3 2010
Abstract
We here describe the metabolic engineering of an artificial pathway that produces 26% EPA in leaf triacylglycerol using a newly-identified Delta6-desaturase from the marine microalga Micromonas pusilla. We also demonstrate that this enzyme appears to function as an acyl-CoA desaturase that has prefe...
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PMID: 20004733
PDF is available here.
PDF is available here.
Abstract
We reveal a wide-ranging distribution of permuted tRNA genes in the genomes of photosynthetic eukaryotes. This includes in the smallest eukaryotic genome known to date, the nucleomorph genome of the chlorarachniophyte alga Bigelowiella natans. Comparison between cDNA and genomic DNA sequences of two...
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PMID: 20022888
PDF is available here.
PDF is available here.
Journal of Plant Research (123)3 2010
Abstract
We propose a new genus Chlorinimonas with Chlorinimonas sublosa as the type species. In addition, this paper is the first report of molecular data covering all genera of the Raphidophyceae. The phylogenetic analysis suggests that the intrusion to freshwater habitat has occurred only once in the Raph...
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PMID: 19946727
PDF is available here.
PDF is available here.
Abstract
Abstract
In this study, potential inhibitory effect of 21 species of marine algae on melanogenesis was assessed via tyrosinase inhibitory effect. The Ishige okamurae extract tested herein evidenced profound tyrosinase inhibitory effect, compared to that exhibited by other marine algae extracts. Thus, I. okam...
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PMID: 20211676
PDF is available here.
PDF is available here.
Abstract
Caseins (alpha(s1)-, alpha(s2)-, and beta-casein) are phosphoproteins that are capable of binding transition metals and scavenging free radicals; this property makes them good candidates to be used as natural antioxidants in oil-in-water emulsions. Caprine casein exhibits variability in alpha(s1)-ca...
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PMID: 20232823
PDF is available here.
PDF is available here.
Ecological Applications (20)3 2010
Abstract
Degradation of inshore coral reefs due to poor water quality is a major issue, yet it has proved difficult to demonstrate this linkage at other than local scales. This study modeled the relationships between large-scale data on water clarity and chlorophyll and four measures of reef status along the...
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PMID: 20437968
PDF is available here.
PDF is available here.
Ecological Applications (20)3 2010
Abstract
Contradictions between system-specific evidence and broader paradigms to explain ecosystem behavior present a challenge for natural resource management. In Florida (U.S.A.) springs, increasing nitrate (NO3-) concentrations have been implicated as the cause of algal overgrowth via alleviation of N-li...
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PMID: 20437966
PDF is available here.
PDF is available here.
Marine Biotechnology (12)2 2010
Abstract
Marine heterotrophic microalgal species which are potentially rich in docosahexaenoic acid (DHA, C22:6n-3) have been found in Taiwan; however, there was a lack of detailed analysis and characterization of these indigenous algae which is needed for the development of commercial applications. Hence, t...
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PMID: 19609613
PDF is available here.
PDF is available here.
Abstract
A mechanistic model of microalgae is used to explore the implications of modifying microalgal chlorophyll content and photosynthetic efficiency with an aim to optimising commercial biomass production. The models show the potential for a 10 fold increase in microalgae productivity in genetically modi...
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PMID: 20034498
PDF is available here.
PDF is available here.
Abstract
Abstract
We explored the feeding process and the kinds of prey species that P. shiwhaense is able to feed on using several different types of microscopes, including a transmission electron microscope and high-resolution video-microscopy. In addition, we measured the growth and ingestion rates of P. shiwhaens...
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PMID: 20487129
PDF is available here.
PDF is available here.
Abstract
Tobago's fringing coral reefs (FR) and Buccoo Reef Complex (BRC) can be affected locally by wastewater and stormwater, and regionally by the Orinoco River. In 2001, seasonal effects of these inputs on water-column nutrients and phytoplankton (Chl a), macroalgal C:N:P and delta(15)N values, and bioco...
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PMID: 20034641
PDF is available here.
PDF is available here.
Abstract
We concluded that the R-BT065 cluster represents a ubiquitous, highly active segment of bacterioplankton in nonacidic lakes and ponds and that alga-derived substrates likely form the main pool of substrates responsible for its high growth potential and broad distribution in freshwater habitats....
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PMID: 19948856
PDF is available here.
PDF is available here.
Abstract
With the wide acceptance of the long-chain (LC) n-3 PUFA EPA and DHA as important nutrients playing a role in the amelioration of certain diseases, efforts to understand factors affecting intakes of these fatty acids along with potential strategies to increase them are vital. Widespread aversion to...
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PMID: 19954567
PDF is available here.
PDF is available here.
Abstract
In two experiments over two years, we enclosed equivalent densities and masses of either single-species or mixed-species of herbivorous fishes in replicate, 4 m(2) cages at a depth of 17 m on a reef in the Florida Keys, USA to evaluate the effects of herbivore identity and species richness on coloni...
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PMID: 20126450
PDF is available here.
PDF is available here.
Abstract
Lichens are symbiotic organisms of fungi and algae or cyanobacteria. Lichen-forming fungi synthesize a great variety of secondary metabolites, many of which are unique. Developments in analytical techniques and experimental methods have resulted in the identification of about 1050 lichen substances...
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PMID: 20469633
PDF is available here.
PDF is available here.
Abstract
Obtained fractions of exometabolites of sea microalgae cultivated in synthetic sea water influenced weakly on the reproduction of pathogenic bacteria, which differed depending on type of both microalga and microorganism. However EAF fraction of exometabolites of P. tricornutum obtained during its cu...
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PMID: 20468099
PDF is available here.
PDF is available here.
Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering (45)7 2010
Abstract
We have defined the efficiency of the ultrasonic control of algae at a specific frequency as: (% inactivation of the algae) / (ultrasonic intensity applied). When this is applied to the results at different frequencies the order of efficiency for algae reduction is 20 < 1146 < 864 < 580 kHz. This su...
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PMID: 20401779
PDF is available here.
PDF is available here.
Abstract
The response of the antioxidant defense system of an intertidal macroalgae Corallina officinalis L. to different dosages of UV-B irradiation was investigated. Results showed that superoxide dimutase (SOD) and peroxidase (POX) increased and then maintained at a relatively stable level when subjected...
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PMID: 20608508
PDF is available here.
PDF is available here.
Biofouling (26)2 2010
Abstract
Despite its frequent use in terrestrial and freshwater systems, there is a lack of published experimental research examining the effectiveness of spray-delivered chemicals for the management of non-indigenous and/or unwanted pests in marine habitats. This study tested the efficacy of spraying acetic...
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PMID: 19937489
PDF is available here.
PDF is available here.
Folia Biologica (Krakow) (58)1-2 2010
Abstract
We reconstructed the phylogeny of isolated endosymbiotic algae using the 18S rRNA gene to clarify its current status and to validate the traditional inclusion of these endosymbiotic algae within the Chlorella genus. Molecular analyses established that different genera and species of unicellular gree...
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PMID: 20420208
PDF is available here.
PDF is available here.
Water Science & Technology (61)10 2010
Abstract
Canonical discriminant analysis (CDA) was applied in order to distinguish the water-quality and the sediment-quality parameters from neighboring rivers, and to recognize similarities of water and sediment properties between a lagoon and neighboring rivers. Two set of constructed discriminant functio...
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PMID: 20453320
PDF is available here.
PDF is available here.
Fortschritte der Chemie organischer Naturstoffe. Progress in the chemistry of organic natural products. Progres dans la chimie des substances organiques naturelles (91) 2010
Abstract
Fortschritte der Chemie organischer Naturstoffe. Progress in the chemistry of organic natural products. Progres dans la chimie des substances organiques naturelles (91) 2010
Abstract
Abstract
Three predator-dependent trophic functions have been fitted to experimental data on individual ration of two phytophagous rotifers (Brachionus calyciflorus and Philodina acuticornis) in laboratory monocultures of microalgae (Chlorella vulgaris Beyer, Scenedesmus quadricauda Brev. and Synechocistis s...
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PMID: 20184158
PDF is available here.
PDF is available here.
Chemosphere (78)4 2010
Abstract
Copper complexation in marine systems is mainly controlled by organic matter, partially produced by micro- and macroalgae that release exudates with the capacity to bind metals. This feature is important as it influences bioavailability, bioaccumulation, toxicity, and transport of copper through bio...
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PMID: 19962173
PDF is available here.
PDF is available here.
Ecological Applications (19)8 2009
Abstract
We examined whether formation of macroalgal blooms could be linked to the composition of the fish community. We then tested whether predator or nutrient availability could explain the field patterns in two small-scale field experiments, by comparing joint effects on algal net production from nutrien...
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PMID: 20014572
PDF is available here.
PDF is available here.
Water Environment Research (81)11 2009
Abstract
This research identified toxin detection limits using the variable fluorescence of naturally occurring microalgae in source drinking water for five chemical toxins with different molecular structures and modes of toxicity. The five chemicals investigated were atrazine, Diuron, paraquat, methyl parat...
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PMID: 19957768
PDF is available here.
PDF is available here.
Abstract
Between May and November 2006, the epipelic algal flora and its seasonal variations in the Balikli Dam Reservoir were investigated. A total of 55 species were identified, most of which belonged to the Bacillariophyta (31). Other taxonomic groups present were Chlorophyta (9), Cyanoprokaryota (8) and...
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PMID: 20329386
PDF is available here.
PDF is available here.
Ecological Applications (19)7 2009
Abstract
We used a probit time series model and Bayesian model averaging (BMA) to predict occurrences of blooms of Lyngbya majuscula, a toxic cyanophyte, in Deception Bay, Queensland, Australia. We found a suite of useful predictors for HAB occurrence, with temperature figuring prominently in models with the...
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PMID: 19831071
PDF is available here.
PDF is available here.
Abstract
The relationship between cadmium speciation and accumulation in periphyton was examined at environmentally relevant Cd concentrations under natural freshwater conditions. Periphyton was exposed in artificial recirculating channels containing natural freshwater to two Cd concentrations (20 and 40 nM)...
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PMID: 19848136
PDF is available here.
PDF is available here.
Abstract
Photosynthesis Research (102)1 2009
Abstract
Photosynthetic parameters of phytoplankton and sea ice algae from landfast sea ice of the Chukchi Sea off Point Barrow, Alaska, were assessed in spring 2005 and winter through spring 2006 using Pulse Amplitude Modulated (PAM) fluorometry including estimates of maximum quantum efficiency (F(v)/F(m)),...
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PMID: 19728139
PDF is available here.
PDF is available here.
Photosynthesis Research (102)1 2009
Abstract
High-resolution light-induced kinetics of chlorophyll fluorescence (OJIP transients) were recorded and analyzed in cultures of diatoms (Thalassiosira weissflogii, Chaetoceros mulleri) and dinoflagellates (Amphidinium carterae, Prorocentrum minimum). Fluorescence transients showed the rapid exponenti...
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PMID: 19731073
PDF is available here.
PDF is available here.
Abstract
We examined the spatial patterns of methylmercury (MeHg) concentrations in the dominant groups of aquatic insect larvae across a network of streams (drainage area ranging from 0.5 to 150 km2) in northern California during summer baseflow conditions. We found that, with the exception of water strider...
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PMID: 19806736
PDF is available here.
PDF is available here.