33,368 results match your criteria Biota Neotropica[Journal]


Comparative study of Cu uptake and early transcriptome responses in the green microalga Chlamydomonas reinhardtii and the macrophyte Elodea nuttallii.

Environ Pollut 2019 Apr 10;250:331-337. Epub 2019 Apr 10.

Department F.-A. Forel for Environmental and Aquatic Sciences, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 66, Boulevard Carl-Vogt, CH-1211, Geneva 4, Switzerland. Electronic address:

Microalgae are widely used as representative primary producers in ecotoxicology, while macrophytes are much less studied. Here we compared the bioavailability and cellular toxicity pathways of 2 h-exposure to 10 mol L Cu in the macrophyte Elodea nuttallii and the green microalga Chlamydomonas reinhardtii. Uptake rate was similar but faster in the algae than in the macrophyte, while RNA-Sequencing revealed a similar number of regulated genes. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S02697491183557
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http://dx.doi.org/10.1016/j.envpol.2019.04.032DOI Listing
April 2019
1 Read

Terrestrial organic matter increases zooplankton methylmercury accumulation in a brown-water boreal lake.

Sci Total Environ 2019 Mar 29;674:9-18. Epub 2019 Mar 29.

Department of Bioscience, University of Oslo, Blindernveien 31, 0371 Oslo, Norway. Electronic address:

Increases in terrestrial organic matter (tOM) transport from catchments to boreal lakes can affect methylmercury (MeHg) accumulation in aquatic biota both directly by increasing concentrations of aqueous MeHg, and indirectly through effects on MeHg bioavailability and on energy pathways in the lower food web. We carried out a detailed seasonal study of water chemistry, zooplankton diet, and MeHg accumulation in zooplankton in two lakes with contrasting tOM concentrations. Between-lake differences explained 51% of the variability in our water chemistry data, with no observed effect of season or sampling depth, contrary to our expectations. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.446DOI Listing

How closely do mercury trends in fish and other aquatic wildlife track those in the atmosphere? - Implications for evaluating the effectiveness of the Minamata Convention.

Sci Total Environ 2019 Apr 9;674:58-70. Epub 2019 Apr 9.

Department of Marine Sciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, USA.

The Minamata Convention to reduce anthropogenic mercury (Hg) emissions entered into force in 2017, and attention is now focused on how to best monitor its effectiveness at reducing Hg exposure to humans. A key question is how closely Hg concentrations in the human food chain, especially in fish and other aquatic wildlife, will track the changes in atmospheric Hg that are expected to occur following anthropogenic emission reductions. We investigated this question by evaluating several regional groups of case studies where Hg concentrations in aquatic biota have been monitored continuously or intermittently for several decades. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.101DOI Listing

Phylogenomics of the longitarsal Colossendeidae: The evolutionary history of an Antarctic sea spider radiation.

Mol Phylogenet Evol 2019 Apr 16. Epub 2019 Apr 16.

Zoological Research Museum Alexander Koenig, Statistical Phylogenetics and Phylogenomics, Adenauerallee 160, D-53113 Bonn, Germany; Faculty of Mathematics and Natural Sciences, University of Bonn, D-53012 Bonn, Germany.

Sea spiders (Pycnogonida) constitute a group of marine benthic arthropods that has a particularly high species diversity in the Southern Ocean. The "longitarsal" group of the sea spider family Colossendeidae is especially abundant in this region. However, this group also includes some representatives from other oceans, which raises the question where the group originates from. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10557903183051
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http://dx.doi.org/10.1016/j.ympev.2019.04.017DOI Listing
April 2019
1 Read

Latitudinal variation in soil nematode communities under climate warming-related range-expanding and native plants.

Glob Chang Biol 2019 Apr 19. Epub 2019 Apr 19.

Netherlands Institute of Ecology, PO Box 50, 6700 AB, Wageningen, Netherlands.

Current climate change has led to latitudinal and altitudinal range expansions of numerous species. During such range expansions, plant species are expected to experience changes in interactions with other organisms, especially with belowground biota that have a limited dispersal capacity. Nematodes form a key component of the belowground food web as they include bacterivores, fungivores, omnivores and root herbivores. Read More

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http://dx.doi.org/10.1111/gcb.14657DOI Listing

Density-dependency and plant-soil feedback: former plant abundance influences competitive interactions between two grassland plant species through plant-soil feedbacks.

Plant Soil 2018 28;428(1):441-452. Epub 2018 May 28.

3Nature Conservation and Plant Ecology Group, Wageningen University, Droevendaalsesteeg 3a, 6708 PB Wageningen, The Netherlands.

Backgrounds And Aims: Negative plant-soil feedbacks (PSFs) are thought to promote species coexistence, but most evidence is derived from theoretical models and data from plant monoculture experiments.

Methods: We grew and in field plots in monocultures and in mixtures with three ratios (3:1, 2:2 and 1:3) for three years. We then tested in a greenhouse experiment the performance of and in pots planted with monocultures and 1:1 mixtures and filled with live and sterile soils collected from the field plots. Read More

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http://dx.doi.org/10.1007/s11104-018-3690-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435205PMC

Evaluation of the genotoxicity of neurotoxic insecticides using the micronucleus test in Tradescantia pallida.

Chemosphere 2019 Apr 12;227:371-380. Epub 2019 Apr 12.

Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil.

Neonicotinoids and phenylpyrazoles are classes of neurotoxic insecticides which are able to bind at different ligand sites of neural receptors, leading to the deregulation of insect neural activity and hence resulting in death. The misuse or indiscriminate use of these chemicals is directly associated with several toxicological effects in biota and at different trophic levels. Based on this premise, the aim of the present study was to evaluate and compare the genotoxic capacity of different concentrations of thiamethoxam (TMX), acetamiprid (ACP), imidacloprid (IMI) and fipronil (FP) through the Micronucleus Test in Tradescantia pallida (Trad-MCN). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193072
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.073DOI Listing
April 2019
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Multi-faceted particle pumps drive carbon sequestration in the ocean.

Nature 2019 Apr 17;568(7752):327-335. Epub 2019 Apr 17.

Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY, USA.

The ocean's ability to sequester carbon away from the atmosphere exerts an important control on global climate. The biological pump drives carbon storage in the deep ocean and is thought to function via gravitational settling of organic particles from surface waters. However, the settling flux alone is often insufficient to balance mesopelagic carbon budgets or to meet the demands of subsurface biota. Read More

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http://www.nature.com/articles/s41586-019-1098-2
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http://dx.doi.org/10.1038/s41586-019-1098-2DOI Listing
April 2019
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Migration of soil microbes may promote tree seedling tolerance to drying conditions.

Ecology 2019 Apr 16:e02729. Epub 2019 Apr 16.

Department of Plant Pathology, University of Wisconsin - Madison, 391 Russell Labs, 1630 Linden Dr., Madison, Wi, 53706.

Soil-microbial interactions have the potential to mediate the ability of tree populations to persist in their current location or establish in new areas. Immigration of microbial taxa from drier conditions may promote seedling tolerance to drying climates. In a greenhouse experiment, we determined seedling performance of Ostrya virginiana and Betula nigra seedlings after experimentally swapping sterilized soils and local and foreign microbial inocula from nine sites over a gradient of precipitation and soil types, in well-watered and water reduced conditions. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/ecy.2729
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http://dx.doi.org/10.1002/ecy.2729DOI Listing
April 2019
2 Reads

Host-parasite interaction as a toxicity test endpoint using asymmetrical exposures.

Aquat Toxicol 2019 Apr 8;211:173-180. Epub 2019 Apr 8.

University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic.

Interspecific relationships frequently determine the effect a pollutant can have on an organism, and this is especially true in closely interacting species such as hosts and parasites. The high spatial and temporal variability of contaminant concentrations combined with the movement of aquatic biota can further influence the consequences that are associated with contamination. We used a full factorial design for the exposed and unexposed partners of the relationship between the parasitic larvae (glochidia) of the European freshwater mussel (Anodonta anatina) and its host fish (Squalius cephalus) to identify the sources of variation in the sublethal endpoints of species interaction (the intensity of parasite attachment, the spatial position of glochidia on the host body, and encapsulation success). Read More

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http://dx.doi.org/10.1016/j.aquatox.2019.04.006DOI Listing
April 2019
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Bioaccumulation of methylmercury in a marine diatom and the influence of dissolved organic matter.

Mar Chem 2017 Dec 28;197:70-79. Epub 2017 Sep 28.

School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA.

The largest bioconcentration step of most metals, including methylmercury (MeHg), in aquatic biota is from water to phytoplankton, but the extent to which dissolved organic matter (DOM) affects this process for MeHg largely remains unexplored in marine systems. This study investigated the influence of specific sulfur-containing organic compounds and naturally occurring DOM on the accumulation of MeHg in a marine diatom . Initial uptake rate constants and volume concentration factors (VCFs) of MeHg were calculated to evaluate MeHg enrichment in algal cells in the presence of a range of organic compound concentrations. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03044203173021
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http://dx.doi.org/10.1016/j.marchem.2017.09.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6457661PMC
December 2017
1 Read

Toxic effects of a methanolic coal dust extract on fish early life stage.

Chemosphere 2019 Apr 5;227:100-108. Epub 2019 Apr 5.

Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA.

Coal dust is a contaminant that impacts the terrestrial and aquatic environment with a complex mixture of chemicals, including PAHs and metals. This study aims to evaluate the toxic effect of a methanolic coal dust extract on a fish early life stage by analyzing phenotypic alterations, transcriptome changes, and mortality in zebrafish (ZF) embryos. ZF embryos were exposed to methanolic coal dust extract at 1-5000 mg·L-1 and monitored using bright field microscopy 24 and 48 hpf to determine malformations and mortality. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00456535193065
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http://dx.doi.org/10.1016/j.chemosphere.2019.04.012DOI Listing
April 2019
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CIRCLE OF LIFE: THE COMMON HAMSTER (CRICETUS CRICETUS L., 1758) ADAPTATIONS TO URBAN ENVIRONMENT.

Integr Zool 2019 Apr 14. Epub 2019 Apr 14.

Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russia.

Traditionally, urbanization is seen as a negative phenomenon for biota. However, changes in the environmental parameters induced by urbanization might be favorable for some species. Over the past half-century, the common hamster actively populated cities, establishing populations in some European, Russian and Kazakhstan cities. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1111/1749-4877.12
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http://dx.doi.org/10.1111/1749-4877.12394DOI Listing
April 2019
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Evaluation of the raw water quality: physicochemical and toxicological approaches.

Environ Geochem Health 2019 Apr 13. Epub 2019 Apr 13.

Institute of Tropical Pathology and Public Health, Federal University of Goiás, Rua 235 - s/n - Setor Universitário, Goiânia, Goiás, Brazil.

Environmental degradation has increased, mainly as a result of anthropogenic effects arising from population, industrial and agricultural growth. Water pollution is a problem that affects health, safety and welfare of the whole biota which shares the same environment. In Goiânia and metropolitan region, the main water body is the Meia Ponte River that is used for the abstraction of water, disposal of treated wastewater and effluents. Read More

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http://dx.doi.org/10.1007/s10653-019-00292-9DOI Listing
April 2019
4 Reads

Chemical mixtures and fluorescence in situ hybridization analysis of natural microbial community in the Tiber river.

Sci Total Environ 2019 Apr 3;673:7-19. Epub 2019 Apr 3.

European Commission, Joint Research Centre (JRC), Ispra, Italy. Electronic address:

The Water Framework Directive (WFD) regulates freshwater and coastal water quality assessment in Europe. Chemical and ecological water quality status is based on measurements of chemical pollutants in water and biota together with other indicators such as temperature, nutrients, species compositions (phytoplankton, microalgae, benthos and fish) and hydromorphological conditions. However, in the current strategy a link between the chemical and the ecological status is missing. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.04.011DOI Listing

Extremely acidic environment: Biogeochemical effects on algal biofilms.

Ecotoxicol Environ Saf 2019 Aug 10;177:124-132. Epub 2019 Apr 10.

CESAM Associated Lab - Department of Biology, Campus de Santiago, 3810-193, Aveiro, Portugal; Department of Biology, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.

The biological responses of acidobiontic species to extremely acidic waters, as those related with Acid Mine Drainage (AMD) processes, are relevant not only to understand the toxicological degree of the waters as well as the mechanisms responsible for the survival and adaptation of such organisms. Therefore, the objective of this study was to evaluate the effect of acidic pH and metals in biofilms collected in two sites a lentic permanent acid pond (AP) and a temporary acid stream (AS) affected by Acid Mine Drainage (AMD), and taking as control (C), an uncontaminated site with circumneutral pH. The results showed typical conditions of AMD-contaminated waters in sites AS and AP (pH < 3 and high concentrations of Al, Cu, Fe, Mn, Pb and Zn), which are responsible for a substantial decrease in biomass and biodiversity of biofilms (with a dominance of acidobiontic species, such as Pinnularia aljustrelica and Eunotia exigua, comparing to the control site. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01476513193041
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http://dx.doi.org/10.1016/j.ecoenv.2019.04.001DOI Listing
August 2019
8 Reads

Genetic diversity of the potentially therapeutic tapeworm Hymenolepis diminuta (Cestoda: Cyclophyllidea).

Parasitol Int 2019 Apr 11;71:121-125. Epub 2019 Apr 11.

Biology Centre, Czech Academy of Sciences, Institute of Parasitology, Branišovská 31, České Budějovice 370 05, Czech Republic; Department of Medical Biology, Faculty of Science, University of South-Bohemia, Branišovská 31, České Budějovice 370 05, Czech Republic. Electronic address:

The cestode Hymenolepis diminuta is highly prevalent in wild rat populations and has also been observed rarely in humans, generally causing no apparent harm. The organism has been studied for decades in the laboratory, and its colonization of laboratory rats has recently been shown as protective against some inflammation-associated disorders. Recently, H. Read More

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http://dx.doi.org/10.1016/j.parint.2019.04.009DOI Listing

Evaluation of the bioaccumulation of octocrylene after dietary and aqueous exposure.

Sci Total Environ 2019 Mar 21;672:669-679. Epub 2019 Mar 21.

BASF SE, 67056 Ludwigshafen, Germany.

Octocrylene is used as UV filter in personal care products with a high production volume and can be detected in surface water and biota. It is liquid at ambient temperature, highly lipophilic, has a high adsorption capacity to organic material and is considered as persistent in the environment. The very low water solubility complicates the evaluation of potential long-term effects in aquatic toxicity testing, since effect thresholds are often above the water solubility limit. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.237DOI Listing
March 2019
1 Read

Why is the multiple stressor concept of relevance to radioecology?

Int J Radiat Biol 2019 Apr 11:1-25. Epub 2019 Apr 11.

a Norwegian University of Life Sciences (NMBU), Faculty of Environmental Sciences and Natural Resource Management (MINA) , P.O. Box 5003 , N-1432 Ås , Norway.

Purpose: A number of nuclear and radiological sources have contributed or are still contributing to the release of a series of stressors such as radionuclides in combination with trace metals and even organic chemicals. To assess the impact of mixed contamination, a limited number of stressors are usually evaluated one by one. We have therefore evaluated the benefit of using the multiple stressor concept focusing on key topics within radioecology such as the source term and deposition, ecosystem interactions and exposure, biological uptake and effects including adverse outcome pathway, as a basis for assessing impact and risk. Read More

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https://www.tandfonline.com/doi/full/10.1080/09553002.2019.1
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http://dx.doi.org/10.1080/09553002.2019.1605463DOI Listing
April 2019
3 Reads

Sediment organic carbon and temperature effects on methylmercury concentration: A mesocosm experiment.

Sci Total Environ 2019 May 20;666:1316-1326. Epub 2019 Feb 20.

Department of Biological Sciences, Dartmouth College, Hanover, NH, United States of America.

The fate and mobility of mercury, and its bioaccumulation primarily as methylmercury (MeHg), in marine ecosystems are influenced by climate related environmental factors, including increased temperature and carbon loading. To investigate the interactions between sediment organic carbon and temperature MeHg bioaccumulation, mesocosm experiments were conducted examining relationships between sediment, water column and biota (sediment-dwelling amphipod and juvenile oyster) MeHg concentration. Experimental treatments consisted of a two by two design of high and low temperature (15 & 25 °C) and high and low sediment organic carbon (4-5% and 13% LOI, pre-experiment). Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.302DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6461384PMC

Effects of antimicrobial exposure on detrital biofilm metabolism in urban and rural stream environments.

Sci Total Environ 2019 May 21;666:1151-1160. Epub 2019 Feb 21.

Department of Geography and Environmental Systems, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA. Electronic address:

The occurrence of antimicrobials and other pharmaceuticals in streams is increasingly being reported, yet the impacts of these contaminants of emerging concern on aquatic ecosystems are relatively unknown. Bacteria and fungi are vital components of stream environments and, therefore, exposure to antimicrobials may have important consequences for ecosystem services, such as carbon cycling. The objective of this study was to investigate how two antimicrobials, ciprofloxacin and climbazole, impact detrital biofilm metabolism in urban and rural streams. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.254DOI Listing

NCRP Report No.180 - Management of exposure to ionizing radiation: NCRP radiation protection guidance for the United States.

J Radiol Prot 2019 Apr 10. Epub 2019 Apr 10.

National Council of Radiological Protection, Bethesda, UNITED STATES.

NCRP Report No. 180, "Management of Exposure to Ionizing Radiation: Radiation Protection Guidance for the United States (2018)" was developed by Council Committee 1. The report builds and expands upon previous recommendations of NCRP and the ICRP, covering exposure to radiation and radioactive materials for five exposure categories: occupational, public, medical, emergency workers, and nonhuman biota. Read More

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http://iopscience.iop.org/article/10.1088/1361-6498/ab1826
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http://dx.doi.org/10.1088/1361-6498/ab1826DOI Listing
April 2019
1 Read

Boreal marine fauna from the Barents Sea disperse to Arctic Northeast Greenland.

Sci Rep 2019 Apr 9;9(1):5799. Epub 2019 Apr 9.

Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway.

As a result of ocean warming, the species composition of the Arctic seas has begun to shift in a boreal direction. One ecosystem prone to fauna shifts is the Northeast Greenland shelf. The dispersal route taken by boreal fauna to this area is, however, not known. Read More

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http://dx.doi.org/10.1038/s41598-019-42097-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456728PMC

Halogenated and organophosphorus flame retardants in cetaceans from the southwestern Indian Ocean.

Chemosphere 2019 Apr 2;226:791-799. Epub 2019 Apr 2.

Institute of Environmental Assessment and Water Research (IDAEA-CSIC); Jordi Girona, 18-26, 08034, Barcelona, Spain. Electronic address:

PBDEs, HBCD, DBDPE, PBEB and HBB, dechloranes and OPFRs, as well as natural MeO-PBDEs were monitored in muscle tissue of three dolphin species from the southwestern Indian Ocean (Delphinus delphis, Sousa plumbea and Tursiops aduncus) collected between 2012 and 2015. The mean PBDE concentration was 416 ± 333 ng g lw. BDE-47 was found in all samples and was almost half the total PBDE contamination. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.165DOI Listing
April 2019
3 Reads

Biotransformation of short-chain chlorinated paraffins (SCCPs) with LinA2: A HCH and HBCD converting bacterial dehydrohalogenase.

Chemosphere 2019 Mar 29;226:744-754. Epub 2019 Mar 29.

Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, CH-8600, Dübendorf, Switzerland.

Short-chain chlorinated paraffins (SCCPs) are polyhalogenated hydrocarbons as are hexachlorocyclohexanes (HCHs) and hexabromocyclododecanes (HBCDs). They all have been classified as persistent organic pollutants (POPs) under the UN Stockholm Convention. Per se such compounds are transformed slowly in the environment, transported over long distances and accumulate in biota. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.169DOI Listing

Oxygen, temperature and the deep-marine stenothermal cradle of Ediacaran evolution.

Proc Biol Sci 2018 Dec;285(1893):20181724

1 Department of Geological Sciences, Stanford University , Stanford, CA 94305 , USA.

Ediacaran fossils document the early evolution of complex megascopic life, contemporaneous with geochemical evidence for widespread marine anoxia. These data suggest early animals experienced frequent hypoxia. Research has thus focused on the concentration of molecular oxygen (O) required by early animals, while also considering the impacts of climate. Read More

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http://dx.doi.org/10.1098/rspb.2018.1724DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304043PMC
December 2018
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Acid-base physiology over tidal periods in the mussel Mytilus edulis: size and temperature are more influential than seawater pH.

Proc Biol Sci 2019 Feb;286(1897):20182863

1 Biosciences, University of Exeter , Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD , UK.

Ocean acidification (OA) studies to date have typically used stable open-ocean pH and CO values to predict the physiological responses of intertidal species to future climate scenarios, with few studies accounting for natural fluctuations of abiotic conditions or the alternating periods of emersion and immersion routinely experienced during tidal cycles. Here, we determine seawater carbonate chemistry and the corresponding in situ haemolymph acid-base responses over real time for two populations of mussel ( Mytilus edulis) during tidal cycles, demonstrating that intertidal mussels experience daily acidosis during emersion. Using these field data to parameterize experimental work we demonstrate that air temperature and mussel size strongly influence this acidosis, with larger mussels at higher temperatures experiencing greater acidosis. Read More

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http://dx.doi.org/10.1098/rspb.2018.2863DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6408882PMC
February 2019
2 Reads

Effects of plant functional group removal on structure and function of soil communities across contrasting ecosystems.

Ecol Lett 2019 Apr 7. Epub 2019 Apr 7.

Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 901-83, Umeå, Sweden.

Loss of plant diversity has an impact on ecosystems worldwide, but we lack a mechanistic understanding of how this loss may influence below-ground biota and ecosystem functions across contrasting ecosystems in the long term. We used the longest running biodiversity manipulation experiment across contrasting ecosystems in existence to explore the below-ground consequences of 19 years of plant functional group removals for each of 30 contrasting forested lake islands in northern Sweden. We found that, against expectations, the effects of plant removals on the communities of key groups of soil organisms (bacteria, fungi and nematodes), and organic matter quality and soil ecosystem functioning (decomposition and microbial activity) were relatively similar among islands that varied greatly in productivity and soil fertility. Read More

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http://dx.doi.org/10.1111/ele.13266DOI Listing
April 2019
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Exposure to effluent from pharmaceutical industry induced cytogenotoxicity, hematological and histopathological alterations in (Burchell, 1822).

EXCLI J 2019 6;18:63-78. Epub 2019 Feb 6.

Department of Marine Sciences, University of Lagos, Akoka, Lagos, Nigeria.

Pharmaceutical effluents contain toxic xenobiotics capable of contaminating aquatic environments. Untreated effluents are illegally discharged into aquatic environment in most developing countries. Pharmaceutical effluent induced alterations in biomarkers of genetic and systemic damage on rodents. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449675PMC
February 2019

The role of physics in radioecology and radiotoxicology.

Arh Hig Rada Toksikol 2019 Mar;70(1):3-13

Institute for Medical Research and Occupational Health, Zagreb, Croatia.

This article gives an overview of physical concepts important for radioecology and radiotoxicology to help bridge a gap between non-physicists in these scientific disciplines and the intricate language of physics. Relying on description and only as much mathematics as necessary, we discuss concepts ranging from fundamental natural forces to applications of physical modelling in phenomenological studies. We first explain why some atomic nuclei are unstable and therefore transmute. Read More

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http://dx.doi.org/10.2478/aiht-2019-70-3225DOI Listing
March 2019
1 Read

Heavy metal tolerance and polychlorinated biphenyl oxidation in bacterial communities inhabiting the Pasvik River and the Varanger Fjord area (Arctic Norway).

Mar Pollut Bull 2019 Apr 12;141:535-549. Epub 2019 Mar 12.

Institute for the Biological Resources and Marine Biotechnology, National Research Council (IRBIM-CNR), Spianata San Raineri 86, 98122 Messina, Italy; Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy. Electronic address:

Heavy metals (HMs) and polychlorobiphenyls (PCBs) enter the Arctic environment through a variety of anthropogenic sources with deleterious effects towards biota and public health. Bacteria first transfer toxic compounds to higher trophic levels and, due to the tight link existing between prokaryotic community functions and the type and concentration of contaminants, they may be useful indicator of pollution events and potential toxicity to other forms of life. The occurrence and abundance of HM-tolerant and PCB-oxidizing bacteria in the sub-Arctic Pasvik river area, heavily impacted by anthropogenic modifications, was related to HM and PCB contamination. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.01.070DOI Listing
April 2019
1 Read

Negative effects of warming on seagrass seedlings are not exacerbated by invasive algae.

Mar Pollut Bull 2019 Apr 16;141:36-45. Epub 2019 Feb 16.

Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), Miquel Marques 21, 07190 Esporles, Illes Balears, Spain; Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA.

The observed and projected rise in sea surface temperature challenges marine biodiversity worldwide, and particularly in temperate ecosystems dealing with the arrival of novel species of tropical provenance. When the impacted biota are early life stages of ecosystem engineers, the effects of those impacts are of major concern for ecologists and coastal managers. We experimentally examined the individual and potential additive effects of seawater warming and the presence of the invasive algae on the development of seedlings of the seagrass Posidonia oceanica in a three-month mesocosm experiment. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.01.049DOI Listing

Lycopene and resveratrol ameliorate zinc oxide nanoparticles-induced oxidative stress in Nile tilapia, Oreochromis niloticus.

Environ Toxicol Pharmacol 2019 Mar 18;69:44-50. Epub 2019 Mar 18.

Department of Hygiene, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt.

Industrial products contained nano-zinc oxide (ZnONP) can gain access to the aquaculture environment causing hazardous effects on the living biota. Therefore, this work was planned to examine the ameliorative effects of dietary supplementation of lycopene (LYC) and/or resveratrol (RES) against ZnONP toxicity in Nile tilapia. Five groups with 20 fish each were used; Control, received tap water only; ZnONP group, was intoxicated with ZnONP (50 mg/L); ZnONP-LYC group, was exposed to ZnONP and LYC (500 mg/ kg of the diet); ZnONP-RES group, was exposed to ZnONP and RES (50 mg/kg of the diet); ZnONP-LYC-RES group, was exposed to ZnONP and a combination of LYC and RES. Read More

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http://dx.doi.org/10.1016/j.etap.2019.03.016DOI Listing
March 2019
2 Reads
1.862 Impact Factor

Exposure of liver cell culture from the orange-spotted grouper, Epinephelus coioides, to benzo[a]pyrene and light results in oxidative damage as measured by antioxidant enzymes.

Chemosphere 2019 Mar 29;226:534-544. Epub 2019 Mar 29.

Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Among the various toxicants discharged into aquatic environments, benzo (a) pyrene (BaP) has been shown to effect on the antioxidant system of fish and the evaluation of its impact on biota is of considerable concern. The aim of the present study was to use the primary hepatocyte culture obtained from the orange-spotted grouper, Epinephelus coioides, to evaluate the adverse effects of benzo (a) pyrene (BaP) on cell viability and liver antioxidant system. BaP was selected for its high ability to produce reactive oxygen species (ROS) and oxidative stress. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.03.181DOI Listing
March 2019
3.340 Impact Factor

Characterization of metal/metalloid concentrations in fjords and bays on the Kenai Peninsula, Alaska.

Environ Monit Assess 2019 Apr 5;191(5):264. Epub 2019 Apr 5.

Center for Coastal Monitoring and Assessment, NOAA/NOS, 1305 E. W. Hwy., N/SCI-1, Silver Spring, MD, 20910, USA.

A baseline environmental characterization of Chrome and Dogfish bays on the Kenai Peninsula, Alaska, was conducted using a sediment quality triad approach. Resident fish and blue mussel body burdens were also assessed. The data was derived from a larger study that assessed seven distinct water bodies on the Kenai Peninsula's north side, draining into Kachemak Bay. Read More

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http://dx.doi.org/10.1007/s10661-019-7376-5DOI Listing

Evidence of Microplastic Ingestion by Fish from the Bahía Blanca Estuary in Argentina, South America.

Bull Environ Contam Toxicol 2019 Apr 5. Epub 2019 Apr 5.

Instituto Argentino de Oceanografía (IADO-CONICET/UNS), Bahía Blanca, Argentina.

The aim of this study was to assess - for the first time - the occurrence and distribution of microplastics (MPs) in the gastrointestinal tracts (GITs) of a marine commercial fish species (Micropogonias furnieri) from the Bahía Blanca Estuary (BBE) in Argentina, and to evaluate fish potential associated stress. In order to do this, juveniles were sampled using artisanal fishing arts at two sampling locations. Basic measurements of individual fish were taken (total length, total weight, weight of the liver) and GITs were subsequently removed, digested with 30% HO for 5 days at 60°C, filtered on Whatman paper and then dried. Read More

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http://dx.doi.org/10.1007/s00128-019-02604-2DOI Listing

Root traits and belowground herbivores relate to plant-soil feedback variation among congeners.

Nat Commun 2019 04 5;10(1):1564. Epub 2019 Apr 5.

Laboratory of Nematology, Wageningen University, PO Box 8123, Droevendaalsesteeg, 16700 ES, Wageningen, The Netherlands.

Plant-soil feedbacks contribute to vegetation dynamics by species-specific interactions between plants and soil biota. Variation in plant-soil feedbacks can be predicted by root traits, successional position, and plant nativeness. However, it is unknown whether closely related plant species develop more similar plant-soil feedbacks than more distantly related species. Read More

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http://dx.doi.org/10.1038/s41467-019-09615-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6450911PMC
April 2019
2 Reads

Effect of silver nanoparticles on an integrated fixed-film activated sludge-sequencing batch reactor: Performance and community structure.

Authors:
Hexi Zhou Guoren Xu

J Environ Sci (China) 2019 Jun 31;80:229-239. Epub 2018 Dec 31.

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; National Engineering Laboratory for Sustainable Sludge Management & Resourcelization Technology, Harbin Institute of Technology, Harbin 150090, China. Electronic address:

The effects of silver nanoparticles (AgNPs) on reactor performance, extracellular polymeric substances composition and microbial community structure and function in integrated fixed-film activated sludge-sequencing batch reactors (IFAS-SBRs) were investigated. Results showed that the addition of AgNPs from 0.1 to 10 mg/L exhibited no significant effects on nutrient removal. Read More

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http://dx.doi.org/10.1016/j.jes.2018.12.016DOI Listing
June 2019
2 Reads

Understanding the Environmental Impact of a Mine Dam Rupture in Brazil: Prospects for Remediation.

J Environ Qual 2019 Mar;48(2):439-449

The rupture of the Fundão mine dam in Mariana municipality, Minas Gerais State, Brazil, spilled the tailings across the Doce River basin. These tailings, composed of residues discarded from the beneficiation of iron ore, are rich in SiO and AlO, as well as some ether amine compounds and NaOH. The aim of this study was to assess the distribution of these sediments, as well as their effect on the riparian zones reached, as compared with preserved sites. Read More

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http://dx.doi.org/10.2134/jeq2018.04.0168DOI Listing

The Environmental Impact of Cattle Access to Watercourses: A Review.

J Environ Qual 2019 Mar;48(2):340-351

The degradation of freshwater resources and loss of freshwater biodiversity by anthropogenic activities, including agriculture, are of major global concern. Together with diffuse pollutants, point sources, such as where cattle have direct access to riparian margins and watercourses, can potentially present significant environmental challenges. These can include impacts on stream morphology, increased sedimentation, nutrient additions, microbial contamination, and impacts on aquatic biota. Read More

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http://dx.doi.org/10.2134/jeq2018.04.0167DOI Listing

Horizontal gene transfer allowed the emergence of broad host range entomopathogens.

Proc Natl Acad Sci U S A 2019 Apr 4;116(16):7982-7989. Epub 2019 Apr 4.

MOE Key Laboratory of Biosystems Homeostasis & Protection, College of Life Science, Zhejiang University, Hangzhou 310058, China;

The emergence of new pathogenic fungi has profoundly impacted global biota, but the underlying mechanisms behind host shifts remain largely unknown. The endophytic insect pathogen evolved from fungi that were plant associates, and entomopathogenicity is a more recently acquired adaptation. Here we report that the broad host-range entomopathogen has 18 genes that are derived via horizontal gene transfer (HGT). Read More

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http://dx.doi.org/10.1073/pnas.1816430116DOI Listing
April 2019
1 Read

Review of Polycyclic Aromatic Hydrocarbons (PAHs) Sediment Quality Guidelines for the Protection of Benthic Life.

Integr Environ Assess Manag 2019 Apr 4. Epub 2019 Apr 4.

ExxonMobil Biomedical Sciences Inc., 22777 Springwood Village Parkway, Spring, TX, USA.

Polycyclic aromatic hydrocarbons (PAHs) in sediments can pose harm to the benthic community. Numerous sediment quality guidelines (SQGs) for the protection of benthic life are available to assess the risk of individual PAHs and PAH mixtures in sediments. SQGs are derived using empirical or mechanistic approaches. Read More

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http://dx.doi.org/10.1002/ieam.4142DOI Listing
April 2019
2 Reads

Arbuscular mycorrhiza: a viable strategy for soil nutrient loss reduction.

Arch Microbiol 2019 Apr 2. Epub 2019 Apr 2.

ICAR-Vivekananda Parvatiya Krishi Anusandhan Sansthan (VPKAS), Almora, Uttarakhand, 263601, India.

Arbuscular mycorrhiza fungi's (AMF) role in plant nutrition and stress management is well known, but very few researches and studies have been conducted so far on the fungal ability to reduce different nutrient losses (runoff, leaching and volatilization) from the soil system. This important ecosystem service of AMF had been neglected largely. From the recent findings, it has been confirmed that mycorrhizal symbiosis has potential to check the losses of applied nutrients. Read More

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http://link.springer.com/10.1007/s00203-019-01653-9
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http://dx.doi.org/10.1007/s00203-019-01653-9DOI Listing
April 2019
4 Reads

The composition and abundance of bacterial communities residing in the gut of Glossina palpalis palpalis captured in two sites of southern Cameroon.

Parasit Vectors 2019 Apr 2;12(1):151. Epub 2019 Apr 2.

INTERTRYP, Institut de Recherche pour le Développement, University of Montpellier, Montpellier, France.

Background: A number of reports have demonstrated the role of insect bacterial flora on their host's physiology and metabolism. The tsetse host and vector of trypanosomes responsible for human sleeping sickness (human African trypanosomiasis, HAT) and nagana in animals (African animal trypanosomiasis, AAT) carry bacteria that influence its diet and immune processes. However, the mechanisms involved in these processes remain poorly documented. Read More

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http://dx.doi.org/10.1186/s13071-019-3402-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6444424PMC
April 2019
3 Reads

Nocturnal flight-calling behaviour predicts vulnerability to artificial light in migratory birds.

Proc Biol Sci 2019 Apr;286(1900):20190364

4 Gantz Family Collections Center, The Field Museum , 1400 South Lake Shore Drive, Chicago, IL 60605 , USA.

Understanding interactions between biota and the built environment is increasingly important as human modification of the landscape expands in extent and intensity. For migratory birds, collisions with lighted structures are a major cause of mortality, but the mechanisms behind these collisions are poorly understood. Using 40 years of collision records of passerine birds, we investigated the importance of species' behavioural ecologies in predicting rates of building collisions during nocturnal migration through Chicago, IL and Cleveland, OH, USA. Read More

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http://dx.doi.org/10.1098/rspb.2019.0364DOI Listing
April 2019
3 Reads

Co-Amended Synergistic Interactions between Arbuscular Mycorrhizal Fungi and the Organic Substrate-Induced Cucumber Yield and Fruit Quality Associated with the Regulation of the AM-Fungal Community Structure under Anthropogenic Cultivated Soil.

Int J Mol Sci 2019 Mar 27;20(7). Epub 2019 Mar 27.

Department of Soil Science & SWC, PMAS-Arid Agriculture University, Rawalpindi-46300, Pakistan.

Monotonous cucumber double-cropping systems under plastic greenhouse vegetable cultivation (PGVC) previously intensified by long-term anthropogenic activities and manipulative treatments leads to a crop productivity reduction and soil biota disturbances. In this study, the role of the indigenous arbuscular mycorrhizal strain (AM: L.) and organic substrate (GS: Garlic stalk) application were assessed for plant microbe interaction and crop productivity feedback in a greenhouse (2016⁻2018) under a cultivated Anthrosol characterized as a replanted degraded soil. Read More

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http://dx.doi.org/10.3390/ijms20071539DOI Listing

Dietary exposure and risk assessment of exposure to hexabromocyclododecanes in a Taiwan population.

Environ Pollut 2019 Mar 14;249:728-734. Epub 2019 Mar 14.

Department of Food Safety/Hygiene and Risk Management, National Cheng Kung University, Tainan, 701, Taiwan; Research Center of Environmental Trace Toxic Substances, National Cheng Kung University, Tainan, 701, Taiwan. Electronic address:

Hexabromocyclododecane (HBCD) is commonly used in commercial products and factories. HBCDs can be detected in the air, bioaccumulated deposits, water, soil, sediments, and in biota and foodstuffs in the food-chain because they are not chemically bound to the polymer. We determined the levels of α-, β-, and γ-HBCDs in 270 foodstuffs and the doses of HBCDs Taiwanese are normally exposed to. Read More

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http://dx.doi.org/10.1016/j.envpol.2019.03.040DOI Listing

Applications and challenges of forensic proteomics.

Forensic Sci Int 2019 Apr 22;297:350-363. Epub 2019 Jan 22.

Statistical Modeling and Experimental Design Group, Pacific Northwest National Laboratory, Richland, Washington, USA.

Mass spectrometry-based proteomics has been a useful tool for addressing numerous questions in basic biology research for many years. This success, combined with the maturity of mass spectrometric instrumentation, the ever-increasing availability of protein sequence databases derived from genome sequencing, and the growing sophistication of data analysis methods, places proteomics in a position to have an important role in biological forensics. Because proteins contain information about genotype (sequence) and phenotype (expression levels), proteomics methods can both identify biological samples and characterize the conditions that produced them. Read More

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http://dx.doi.org/10.1016/j.forsciint.2019.01.022DOI Listing

Effects of the water-soluble fraction of a crude oil on freshwater meiofauna and nematode assemblages.

Ecotoxicol Environ Saf 2019 Jul 29;176:186-195. Epub 2019 Mar 29.

University Bielefeld, Department of Animal Ecology, Konsequenz 45, 33615, Bielefeld, Germany.

Oil water-soluble fractions (WSFs) compounds have low persistence in water; evaporating in a matter of hours to days. Nonetheless, they pose high toxicity to exposed biota. Their effects may be instantaneous or delayed, affecting, respectively, mainly survival vs growth and reproduction. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.03.083DOI Listing
July 2019
1 Read

Bioaccumulation and biomagnification of short-chain chlorinated paraffins in marine organisms from the Pearl River Estuary, South China.

Sci Total Environ 2019 Mar 23;671:262-269. Epub 2019 Mar 23.

College of Resources and Environment, Yangtze University, Wuhan 430100, China. Electronic address:

Short-chain chlorinated paraffins (SCCPs) are a series of new persistent organic pollutants, posing a risk of significant adverse effects to biota. Increasing attention has been paid to SCCP pollution in China as large amounts of chlorinated paraffin (CP) products containing SCCPs have been produced and used there. However, knowledge of the bioaccumulation of SCCPs in marine organisms from the Pearl River Estuary (PRE), Southern China, is still scarce. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00489697193134
Publisher Site
http://dx.doi.org/10.1016/j.scitotenv.2019.03.346DOI Listing
March 2019
3 Reads