BIOACCUMULATION AND TROPHIC TRANSFER
Coal ash constituents at the base of aquatic food webs: Processes affecting bioaccumulation and trophic transfer of arsenic
... investigate trophic transfer. These dietary bioaccumulation studies were combined with assays that examined As assimilation efficiency from food, uptake from solution, and efflux for a variety of ...
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Bioaccumulation, biotransformation and trophic transfer of arsenic in the aquatic food chain
... Speciation, bioaccumulation, and biotransformation of arsenic in freshwaters have been studied in recent ...higher trophic levels in the aquatic food chain, and this autotrophic organism plays important ...
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Bioaccumulation, biological effects and trophic transfer of metal (oxide) nanoparticles in marine invertebrates
... 1.4 Trophic Transfer Trophic transfer relates to the accumulation of chemicals/toxicants ...hence trophic accumulation could involve a variety of ...2006). Trophic ...
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Bioaccumulation and biomagnification of mercury in African lakes: The importance of trophic status
... Among-lake comparisons of log(THg) ~ TL regression coef ficients were carried out using analysis of covariance (ANCOVA). A post hoc multiple comparison test was used to determine whether the regression slopes differed ...
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Trophic transfer of radioisotopes in Mediterranean sponges through bacteria consumption
... from trophic route for this ...the bioaccumulation capacities of dissolved metals in Mediterranean sponges showing that with massive sponges (Chondrosia reniformis, Agelas oroides and Ircina variabilis) ...
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Modelling marine trophic transfer of radiocarbon (14C) from a nuclear facility
... This study did not consider ecosystem shifts (e.g. changes in species biomass and the knock-on effects) through time. However, if a model contamination study for an area covers an extensive period of time, then changes ...
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Uptake and Trophic Transfer for Mercury and Methylmercury at the Base of Marine Food Webs
... 36 (<80 µM; Taki and Suzuki, 2001) compared to coastal and shelf environments (Hansell and Carlson, 2002). These waters likely bind the Hg and MeHg less strongly than terrestrial-derived and humic-rich organic ...
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Trophic Transfer of Inorganic Selenium Species through Representative Freshwater Food Chains
... lower trophic level in freshwater ecosystems remain poorly ...studied. Bioaccumulation of Se is expected to vary as a function of species-specific uptake rates, chemical speciation and concentration, and ...
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Bioamplification as a bioaccumulation mechanism
... POP bioaccumulation was at the time not well ...first bioaccumulation models and validation datasets focused on food web transfer of POP compounds (Harrison et ...low trophic transfer ...
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A Reproductive and Trophic Transfer Study Associated with Selenium Concentrations in the Upper Mud River Watershed
... bioaccumulation data. Part 2. Calculating site-specific selenium water-quality standards for protecting fish and birds. Environmental Toxicology and Chemistry, 24 (1), 231-237. Chapman, P.M., Adams W.J., Brooks ...
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Tropic Transfer and Bioaccumulation of Lead Along Soil-Plant-Aphid-Ladybird Food Chain
... Elimination of Pb via the honeydew of aphids and through pupal exuviae during the metamorphosis of ladybirds was also observed. The predation rate and biomass of ladybirds re- vealed that the higher doses of Pb may have ...
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Metal bioaccumulation in representative organisms from different trophic levels of the Caspian Sea
... The bioaccumulations of metals Cu, Cd, Ni, Cr, Co, Mn, Zn and Fe were measured in bivalves, Cerastoderma glucaum, and four species of fishes including Alburnus chalcoides, Liza aurata, Rutilus frisii and Sander ...
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Investigating microplastic trophic transfer in marine top predators
... a b s t r a c t Microplastics are highly bioavailable to marine organisms, either through direct ingestion, or indirectly by trophic transfer from contaminated prey. The latter has been observed for ...
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Evaluating Mercury Dynamics and Trophic Transfer in Aquatic Ecosystems.
... consumers of mercury-contaminated fish. Our results suggest that there are species-to- species differences in Hgt accumulation and that Hgt concentrations should be high in piscivores in low-pH systems close to the coast ...
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Ocean Acidification Affects the Phyto-Zoo Plankton Trophic Transfer Efficiency
... carbon trophic transfer efficiency from phytoplankton-to-zooplankton declined to < 50% of control populations, with a commensurate decrease in ...higher trophic levels involving copepods have clear ...
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Metagenomics Reveals Trophic Transfer of Hg in Songbirds in Acadia National Park
... DNA sequencing technology has drastically changed in the past 15 years (Valentini et al. 2009). Next generation high-throughput sequencing technology has allowed ecologists to utilize non- invasive molecular techniques ...
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Trophic transfer of contaminants in tree swallows (Tachycineta bicolor) nesting near Lake Calumet, Illinois
... In 2004 both Big Marsh and Indian Ridge nestlings had significantly different suites of PBDE congener concentrations than those at Powderhorn, and again in 2005 (Table 3.1).. Local-sou[r] ...
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Bioaccumulation and ecotoxicity of carbon nanotubes
... Little information is available on the biodistribution in terrestrial organisms. As a model terrestrial organ- ism, the common fruit fly Drosophila melanogaster, was fed dry yeast which was spiked with SWCNT or MWCNT ...
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Introduction to the project VAHINE: VAriability of vertical and tropHIc transfer of diazotroph derived N in the south wEst Pacific
... and tropHIc transfer of diazotroph derived N in the south wEst Pacific (VAHINE) project proposes a scientific contribution to answer these questions, based on a combina- tion of experimentation and ...
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Study on accumulation potential of zinc oxide nanoparticles in Artemia and its trophic transfer to Zebrafish (Danio rerio)
... 1- Department of Fisheries, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran Abstract Although nanomaterials have broad applications in many fields including aquaculture, their release into the ...
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