Abstract:
:Eutrophication (i.e., nutrient enrichment, organic enrichment, and oxygen depletion) is one of the most common sources of impairment in Clean Water Act 303(d)-listed waters in the United States. Although eutrophication can eventually cause adverse effects to the benthos, it may be difficult to diagnose. Sediment organic carbon (OC) content has been used as an indicator of enrichment in sediments, but the amount of surface area available for carbon adsorption must be considered. We investigated the utility of the relationship between OC and sediment grain size as an indicator of eutrophication. Data from the U.S. Environmental Protection Agency's Environmental Monitoring and Assessment Program was used to test this relationship. However, anthropogenic contaminants are also capable of causing adverse effects to the benthos and often co-occur with elevated levels of OC. Contaminant analysis and toxicity tests were not consistently related to enrichment status as defined by relationship between total OC and grain size. Although variability in response occurred, reflecting the variance in the water column factors (dissolved oxygen, chlorophyll a, and nutrients) and limited sample sizes, the data supported the hypothesis that sites designated as enriched were eutrophied. Dissolved oxygen levels were reduced at enriched sites, whereas chlorophyll a and nutrients were higher at enriched sites. This suggests that the relationship of OC to grain size can be used as a screening tool to diagnose eutrophication.
journal_name
Environ Toxicol Chemjournal_title
Environmental toxicology and chemistryauthors
Pelletier MC,Campbell DE,Ho KT,Burgess RM,Audette CT,Detenbeck NEdoi
10.1002/etc.414subject
Has Abstractpub_date
2011-03-01 00:00:00pages
538-47issue
3eissn
0730-7268issn
1552-8618journal_volume
30pub_type
杂志文章abstract::Chemical substances other than pesticides, drugs, and food additives are regulated by the U.S. Environmental Protection Agency (U.S. EPA) under the Toxic Substances Control Act (TSCA), but the United States does not require that new substances be tested automatically for such critical properties as biodegradability. T...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2003-04-01 00:00:00
abstract::We conducted acute lethality tests with white sturgeon (Acipenser transmontanus) and Ceriodaphnia dubia exposed to copper and zinc at dissolved organic carbon concentrations ranging from 0.5 to 5.5 mg/L. Dissolved organic carbon had minimal effects on zinc toxicity but did have a protective effect on acute copper toxi...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4592
更新日期:2019-12-01 00:00:00
abstract::Most studies examining the influence of ecological characteristics of fish on Hg concentration in fish tissues have focused on a few variables and been conducted in northern ecosystems. We examined how total length (TL), age, food-web position (estimated using delta13C and delta15N), and habitat were related to total ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/08-197.1
更新日期:2009-05-01 00:00:00
abstract::Total mercury (Hg) concentration was determined in several piscivorous and nonpiscivorous species of fish from 38 drainage lakes with clear-cut, burnt, or undisturbed catchments located in the Canadian Boreal Shield. Mercury concentrations increased with increasing fish trophic position as estimated using stable isoto...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/04-065r.1
更新日期:2005-03-01 00:00:00
abstract::Triclosan (TCS) is a common constituent of personal care products and is frequently present in biosolids. Application of biosolids to land transfers significant amounts of TCS to soils. Because TCS is an antimicrobial and is toxic to some aquatic organisms, concern has arisen that TCS may adversely affect soil organis...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.1721
更新日期:2012-03-01 00:00:00
abstract::Until recently, the behaviors of antibiotics and their ecotoxicological impact have been overlooked in the environment. The topic is broad and encompasses a wide range of organisms including microorganisms, algae, invertebrates, and vertebrates inhabiting various aquatic ecosystems. Changing the equilibrium of any 1 c...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章,评审
doi:10.1002/etc.3552
更新日期:2016-11-01 00:00:00
abstract::Atrazine is the most extensively used herbicide in the United States. Part-per-million concentrations of atrazine have been reported in agricultural runoff. It is detectable in surface waters and precipitation throughout the year, and it has been found in groundwater sources of drinking water. Recent studies indicate ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/03-180
更新日期:2004-04-01 00:00:00
abstract::In Nebraska, fish are exposed to herbicides in agricultural runoff. The study objectives were to determine 1) if fathead minnows and northern leopard frogs exposed to atrazine experience alterations in gene expression, and 2) whether these changes are elicited by a simulated herbicide mixture. Following a 7-d exposure...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4069
更新日期:2018-04-01 00:00:00
abstract::Soil column experiments were conducted to investigate the release of aged organic contaminants (adsorbable organohalogens, [AOX]) and the potential effects of microbial turnover of soil organic matter onto the contaminant release from two different soils of former wastewater infiltration sites. Under reference conditi...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2003-04-01 00:00:00
abstract::Uptake and membrane transport of cadmium (Cd) in roots of the hyperaccumulator Sedum plumbizincicola X.H. Guo et S.B. Zhou ex L.H. Wu was characterized by assessing the impact of various inhibitors and ion channel blockers on Cd accumulation as well as the real-time net Cd2+ flux at the roots with application of the s...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3625
更新日期:2017-04-01 00:00:00
abstract::The effect of sodium chloride (NaCl) on cadmium (Cd) uptake, translocation, and oxidative stress was investigated using 2 tobacco cultivars differing in Cd tolerance. The growth inhibition of the tobacco plants exposed to Cd toxicity was in part alleviated by moderate addition of NaCl in the culture solution. Cadmium ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2183
更新日期:2013-06-01 00:00:00
abstract::Little work has been conducted on the adsorption of arsenic to the mixed iron [Fe(II)/(III)] oxide magnetite and the effect that environmental parameters, such as pH, ionic strength, and temperature, have on adsorption. Magnetite nanoparticles are unique because of their affinity for both arsenate and arsenite and inc...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/08-155.1
更新日期:2009-03-01 00:00:00
abstract::The aerial spray prediction model AgDRIFT embodies the computational engine found in the near-wake Lagrangian model AGricultural DISPersal (AGDISP) but with several important features added that improve the speed and accuracy of its predictions. This article summarizes those changes, describes the overall analytical a...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/1551-5028(2002)021<0659:aamfen>2.0.co;2
更新日期:2002-03-01 00:00:00
abstract::Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis), a protected endangered species, is the sole freshwater subspecies of finless porpoise, living only in the middle and lower reaches of the Yangtze River, China, and its appended lakes. Its population has decreased sharply to 1,400 because of human act...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/07-381.1
更新日期:2008-04-01 00:00:00
abstract::Rainbow trout embryos and larvae were exposed to 0, 0.1, and 1 microg/L total silver (as AgNO3) in water of three different hardnesses (soft water [2 mg/L as CaCO3], moderately hard water [150 mg/L], and hard water [400 mg/L]) in a flow-through system from fertilization to swim-up (64 d). The objective of the study wa...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/04-056r.1
更新日期:2005-07-01 00:00:00
abstract::This study evaluated the interactions of flight, fasting, and 1,1,1-trichloro-bis(4-chlorophenyl)ethane (p,p'-DDT) loading on residue metabolism and distribution in recently exposed white-crowned sparrows (Zonotrichia leucophrys). Female sparrows were dosed with 5 mg p,p'-DDT per kg body weight over 3 d. Following 1 d...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.730
更新日期:2012-02-01 00:00:00
abstract::Induction of the cytochrome P4501A (CYP1A) enzyme system in fish is a common biomarker of exposure to aromatic hydrocarbons. Induction of CYP1A can be measured at a number of steps in the transcription-translation-functional protein pathway using a variety of techniques. The present study examined the range of these m...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/07-039r.1
更新日期:2007-08-01 00:00:00
abstract::This study investigates both the methods and the multispecies and functional level effects of a release of a complex hydrocarbon mixture from sediments using a 60-d modified mixed flask culture (MFC) microcosm. Neat Jet-A was injected and mixed into the sediment with one nondosed and three dosed concentrations. Univar...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract::Luminescent bacterium Shk1 was created for the purpose of testing and screening the toxicity of activated sludge wastewater treatment plant influent to avoid toxic shock to the wastewater treatment plant microorganisms. The toxicity of a number of organic compounds was tested using an assay employing Shk1. Because the...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2002-12-01 00:00:00
abstract::Microcystis aeruginosa is a dominant cyanobacterium commonly found in Chinese freshwater ecosystems during phytoplankton blooms, and copper sulfate is one of the most frequently used algicides for controlling the nuisance blooms. In this study, we examined the effects of varied water chemistry (dissolved organic matte...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.266
更新日期:2010-10-01 00:00:00
abstract::Co-occurrence of pyrethroids and metals in watersheds previously has been reported to pose great risk to aquatic species. Pyrethroids are a class of chiral insecticides that have been shown to have enantioselective toxicity and biotransformation. However, the influence of metals on enantioselectivity of pyrethroids ha...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3747
更新日期:2017-08-01 00:00:00
abstract::American kestrels (Falco sparverius) were fed diets containing 0 (control), 1, 3, 10, and 30 microgram/g (wet wt) of Kelthane. Residues of dicofol and its metabolites were then analyzed in the eggs and carcasses of females. Significant differences occurred among treatments for residues of both p,p'-dicofol and p,p'-de...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/1551-5028(2001)020<2848:drieac>2.0.co;2
更新日期:2001-12-01 00:00:00
abstract::A set of 69 concentration-response curves from 5 acute ecotoxicity assays was fitted with a 2-parameter logistic equation. High correlation between values of regression parameters suggested similar slopes of the curves. This enabled derivation of the empirical single-parameter logistic equation with the sole median ef...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2328
更新日期:2013-10-01 00:00:00
abstract::Vitellogenin (VTG) is a precursor of egg-yolk protein and is therefore present at high concentrations in the plasma of female fish. In male fish, VTG concentrations are usually undetectable or low but can be induced upon exposure to estrogenic substances either via the water or the diet. This work was performed to det...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.479
更新日期:2011-05-01 00:00:00
abstract::The ivory gull Pagophila eburnea is a high-Arctic species threatened by climate change and contaminants. The objective of the present study was to assess spatial variation of contaminant levels (organochlorines [OCs], brominated flame retardants [BFRs], perfluorinated alkyl substances [PFASs], and mercury [Hg]) in ivo...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2935
更新日期:2015-07-01 00:00:00
abstract::Marine waters have been poorly investigated for the occurrence of pharmaceutical contamination. Recent data confirm that pharmaceuticals occur widely in marine and coastal environments; therefore, assessment of potential risk to marine species needs further efforts. The present study represents the first extensive rev...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章,评审
doi:10.1002/etc.3131
更新日期:2016-04-01 00:00:00
abstract::Potassium permanganate (KMnO4) is used worldwide in freshwater pond aquaculture for treatment and prevention of waterborne external parasitic, bacterial, and fungal diseases. Nevertheless, KMnO4 has not been approved by the U.S. Food and Drug Administration, and insufficient information exists to allow evaluation of t...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/05-453r2.1
更新日期:2006-11-01 00:00:00
abstract::Photosynthesis-inhibiting phenylurea derivatives, such as diuron, are widely used as herbicides. Diuron concentrations clearly exceeding the predicted-no-effect concentration have been regularly measured in European freshwater systems. The frequently observed exposure to mixtures of phenylureas additionally increases ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/02-497
更新日期:2004-02-01 00:00:00
abstract::Bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) is a halogenated aromatic nitrile herbicide used on a variety of crops for the postemergence control of annual broad-leaved weeds. The anaerobic biodegradability of bromoxynil and its aerobic transformation product, 3,5-dibromo-4-hydroxybenzoate, were examined in enrichme...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2003-03-01 00:00:00
abstract::High-molecular weight petroleum hydrocarbons (HMWPHs) are a common pollutant in urban freshwater sediments. A previous study found that HMWPHs derived from synthetic oils are detrimental to aquatic benthic macroinvertebrates at concentrations greater than 840 mg/kg, but it is unclear what effect hydrocarbons derived f...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/07-414.1
更新日期:2008-05-01 00:00:00