PubAg

Main content area

Search

11  Search Results

1 - 11 of 11
Number of results to display per page

Search Results

1. Adaptation and interaction of saxicolous crustose lichens with metals

Author:
Purvis, Ole William
Source:
Botanical studies 2014 v.55 no.1 pp. 23
ISSN:
1999-3110
Subject:
algae,   etc   ; Acarospora; Cyanobacteria; analytical methods; fungi; habitats; lichens; metals; minerals; new taxa; photostability; risk; toxicity; weathering;     Show all 14 Subjects
Abstract:
... One of the most successful mechanisms enabling fungi to survive in extreme subaerial environments is by formation of mutualistic symbioses with algae and/or cyanobacteria as lichens. Collections, field and mineral weathering studies and developments in modern instrumental and analytical techniques have considerably advanced knowledge in understanding tolerance mechanisms to stress, environmental a ...
DOI:
10.1186/1999-3110-55-23

2. Assessment of river water quality using an integrated physicochemical, biological and ecotoxicological approach

Author:
Serpa, Dalila; Keizer, Jan Jacob; Cassidy, Joana; Cuco, Ana; Silva, Vera; Gonçalves, Fernando; Cerqueira, Mário; Abrantes, Nelson
Source:
Environmental science 2014 v.16 no.6 pp. 1434-1444
ISSN:
2050-7895
Subject:
algae,   etc   ; Daphnia magna; Lemna minor; Selenastrum capricornutum; Vibrio fischeri; aquatic communities; aquatic ecosystems; autumn; dissolved oxygen; ecological footprint; ecotoxicology; macroinvertebrates; macrophytes; pollution load; risk; river water; rivers; spring; surface water; toxicity; water quality; watersheds; Portugal;     Show all 23 Subjects
Abstract:
... In order to maintain and improve the water quality in European rivers, the Water Framework Directive (WFD) requires an integrated approach for assessing water quality in a river basin. Although the WFD aims at a holistic understanding of ecosystem functioning, it does not explicitly establish cause-effect relationships between stressors and changes in aquatic communities. To overcome this limitati ...
DOI:
10.1039/c3em00488k

3. Cellular Partitioning of Nanoparticulate versus Dissolved Metals in Marine Phytoplankton

Author:
Bielmyer-Fraser, Gretchen K.; Jarvis, Tayler A.; Lenihan, Hunter S.; Miller, Robert J.
Source:
Environmental Science & Technology 2014 v.48 no.22 pp. 13443-13450
ISSN:
1520-5851
Subject:
algae,   etc   ; Bacillariophyceae; Thalassiosira; aquatic environment; cell walls; cupric oxide; ecosystems; endoplasmic reticulum; grazing; industry; metal ions; nanometals; nanoparticles; phytoplankton; pollution; population growth; primary productivity; risk; silver nitrate; society; toxicity; trophic levels; zinc oxide; zooplankton;     Show all 24 Subjects
Abstract:
... Discharges of metal oxide nanoparticles into aquatic environments are increasing with their use in society, thereby increasing exposure risk for aquatic organisms. Separating the impacts of nanoparticle from dissolved metal pollution is critical for assessing the environmental risks of the rapidly growing nanomaterial industry, especially in terms of ecosystem effects. Metal oxides negatively affe ...
DOI:
10.1021/es501187g

4. Combined effects of pharmaceuticals, personal care products, biocides and organic contaminants on the growth of Skeletonema pseudocostatum

Author:
Petersen, Karina; Heiaas, Harald Hasle; Tollefsen, Knut Erik
Source:
Aquatic toxicology 2014 v.150 pp. 45-54
ISSN:
0166-445X
Subject:
algae,   etc   ; benzophenones; additive effect; risk; Skeletonema costatum; polycyclic aromatic hydrocarbons; drugs; models; polychlorinated biphenyls; propranolol; biocides; benzo(a)pyrene; industrial effluents; diuron; growth retardation; personal care products; endosulfan; toxicity; wastewater;     Show all 19 Subjects
Abstract:
... Organisms in the environment are exposed to a number of pollutants from different compound groups. In addition to the classic pollutants like the polychlorinated biphenyls, polyaromatic hydrocarbons (PAHs), alkylphenols, biocides, etc. other compound groups of concern are constantly emerging. Pharmaceuticals and personal care products (PPCPs) can be expected to co-occur with other organic contamin ...
DOI:
10.1016/j.aquatox.2014.02.013

5. Current approaches to cyanotoxin risk assessment and risk management around the globe

Author:
Ibelings, Bas W.; Backer, Lorraine C.; Kardinaal, W. Edwin A.; Chorus, Ingrid
Source:
Harmful algae 2014 v.40 pp. 63-74
ISSN:
1568-9883
Subject:
algae,   etc   ; Cyanobacteria; European Union; World Health Organization; bioactive compounds; biomass; body size; cylindrospermopsin; drinking water; expert opinion; freshwater; guidelines; health hazards; humans; mechanism of action; microcystin-LR; monitoring; neurotoxins; recreation areas; risk; risk assessment; risk management process; seafoods; swimming; toxicity; watersheds;     Show all 26 Subjects
Abstract:
... Toxic cyanobacteria became more widely recognized as a potential health hazard in the 1990s, and in 1998 the World Health Organization (WHO) first published a provisional Guideline Value of 1μgL−1 for microcystin-LR in drinking-water. In this publication we compare risk assessment and risk management of toxic cyanobacteria in 17 countries across all five continents. We focus on the three main (ora ...
DOI:
10.1016/j.hal.2014.10.002
PubMed:
26435706
PubMed Central:
PMC4587991

6. Determining the relative sensitivity of benthic diatoms to atrazine using rapid toxicity testing: A novel method

Author:
Wood, Rebecca J.; Mitrovic, Simon M.; Kefford, Ben J.
Source:
The Science of the total environment 2014 v.485-486 pp. 421-427
ISSN:
0048-9697
Subject:
algae,   etc   ; Achnanthidium; Amphora; Cymbella; Eunotia; Gomphonema; Navicula; aquatic ecosystems; atrazine; autotrophs; benthic organisms; freshwater; herbicide resistance; risk; rocks; toxicity; toxicity testing;     Show all 17 Subjects
Abstract:
... Herbicides pose a potential threat to aquatic ecosystems, especially to phototrophic organisms such as benthic diatoms. Benthic diatoms may be a valuable indicator of the toxic impacts of herbicides in aquatic systems. However, this requires information on the herbicide sensitivity of a wide range of freshwater benthic diatom taxa. Unfortunately this information is only available for a limited num ...
DOI:
10.1016/j.scitotenv.2014.03.115

7. Evaluation of pesticide monitoring strategies in agricultural streams based on the toxic-unit concept — Experiences from long-term measurements

Author:
Bundschuh, Mirco; Goedkoop, Willem; Kreuger, Jenny
Source:
The Science of the total environment 2014 v.484 pp. 84-91
ISSN:
0048-9697
Subject:
algae,   etc   ; aquatic ecosystems; chronic exposure; fish; invertebrates; monitoring; pesticide law; pesticides; pollutants; risk; rivers; runoff; streams; surface water; toxicity; trophic levels;     Show all 16 Subjects
Abstract:
... The European Water Framework Directive requires surface water bodies to have a good chemical and ecological status. Although relatively few pesticides are included in the list of priority pollutants, they pose, due to their intrinsic biological activity, a significant risk for the integrity of aquatic ecosystems. In this context, the pesticide (up to 128 pesticides including some transformation pr ...
DOI:
10.1016/j.scitotenv.2014.03.015

8. Fluctuations in microcystin concentrations, potentially toxic Microcystis and genotype diversity in a cyanobacterial community from a tropical reservoir

Author:
Guedes, Iamê Alves; da Costa Leite, Daniel Moreira; Manhães, Larissa Alves; Bisch, Paulo Mascarello; Azevedo, Sandra M.F.O.e.; Pacheco, Ana Beatriz Furlanetto
Source:
Harmful algae 2014 v.39 pp. 303-309
ISSN:
1568-9883
Subject:
algae,   etc   ; Anabaena; Cylindrospermopsis; Microcystis; aquatic environment; biomass; genes; genetic variation; genotype; microcystins; phytoplankton; quantitative polymerase chain reaction; risk; risk assessment; toxicity;     Show all 15 Subjects
Abstract:
... In the study of cyanobacterial communities, molecular methods can be used to detect and quantify toxin-producing strains and assess genotype diversity. These are promising methods for estimating the risk of exposure to the cyanobacterial toxin microcystin (MC), assuming that the abundance of toxic genotypes is related to the MC concentration. This assumption has been tested in many studies, most o ...
DOI:
10.1016/j.hal.2014.09.001

9. Probabilistic risk assessment of diuron and prometryn in the Gwydir River catchment, Australia, with the input of a novel bioassay based on algal growth

Author:
Shi, Yajuan; Burns, Mitchell; Ritchie, Raymond J.; Crossan, Angus; Kennedy, Ivan R.
Source:
Ecotoxicology and environmental safety 2014 v.106 pp. 213-219
ISSN:
0147-6513
Subject:
algae,   etc   ; Chlorella vulgaris; bioassays; diuron; ecotoxicology; environmental management; exposure duration; indigenous species; laboratory experimentation; probabilistic risk assessment; prometryn; rapid methods; risk; rivers; streams; toxicity; watersheds; Australia;     Show all 18 Subjects
Abstract:
... A probabilistic risk assessment of the selected herbicides (diuron and prometryn) in the Gwydir River catchment was conducted, with the input of the EC50 values derived from both literature and a novel bioassay. Laboratory test based on growth of algae exposed to herbicides assayed with a microplate reader was used to examine the toxicity of diuron and prometryn on the growth of Chlorella vulgaris ...
DOI:
10.1016/j.ecoenv.2014.04.027

10. Risk assessment of an abandoned pyrite mine in Spain based on direct toxicity assays

Author:
García-Gómez, Concepción; Sánchez-Pardo, Beatriz; Esteban, Elvira; Peñalosa, Jesús Manuel; Fernández, María Dolores
Source:
The Science of the total environment 2014 v.470-471 pp. 390-399
ISSN:
0048-9697
Subject:
algae,   etc   ; Daphnia magna; arsenic; bioavailability; ecotoxicology; groundwater; heavy metals; mining; pyrite; risk; risk assessment; soil pollution; soil properties; soil sampling; toxicity; Spain;     Show all 16 Subjects
Abstract:
... This research reports the risk assessment of an abandoned pyrite mine using direct toxicity assays of soil and groundwater samples taken at the site. The toxicity of As and heavy metals from mining soils to soil and aquatic organisms was studied using the Multispecies Soil System (MS-3) in soil columns. Ecotoxicological assessment was performed with soil samples diluted with a control soil at conc ...
DOI:
10.1016/j.scitotenv.2013.09.101

11. Toxicity and bioconcentration of the pharmaceuticals moxifloxacin, rosuvastatin, and drospirenone to the unionid mussel Lampsilis siliquoidea

Author:
Gilroy, Ève A.M.; Klinck, Joel S.; Campbell, Sheena D.; McInnis, Rodney; Gillis, Patricia L.; de Solla, Shane R.
Source:
The Science of the total environment 2014 v.487 pp. 537-544
ISSN:
0048-9697
Subject:
algae,   etc   ; Lampsilis; aquatic environment; aquatic plants; bioaccumulation factor; drugs; freshwater; glutathione transferase; hemocytes; larvae; metabolites; moxifloxacin; mussels; oxygen consumption; personal care products; risk; toxicity; viability; wastewater treatment;     Show all 19 Subjects
Abstract:
... Pharmaceuticals and personal care products (PPCPs) and their metabolites are continually released from wastewater treatment plants into the aquatic environment; however, their impact on aquatic biota is poorly understood. This study examined the toxicity and bioconcentration of three pharmaceuticals: moxifloxacin, rosuvastatin, and drospirenone to the unionid mussel Lampsilis siliquoidea. Effects ...
DOI:
10.1016/j.scitotenv.2014.03.051