Results 81 to 90 of about 11,888 (283)

Assessing the Health Impacts of Contaminants on Green Turtles (Chelonia mydas) Along the Southern Coast of Brazil

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Chemical pollutants pose a significant threat to marine ecosystems. Among these contaminants are trace elements and polycyclic aromatic hydrocarbons (PAH). Green turtles can be employed to evaluate the oceans' health due to their coastal habitats and exposure to multiple threats.
Camila Roberta da Silva Ribeiro   +6 more
wiley   +1 more source

Helminthic Parasites as Heavy Metal Bioindicators in Aquatic Ecosystems

open access: yesMedical Laboratory Journal, 2015
Heavy metals have raised one of the most important problems in ecology and organisms life especially human being and animals. A variety of indicators including tissues of fish, birds and sediment have been used recently to measure the aquatic pollution ...
Mehdi Najm, Mahdi Fakhar
doaj  

Quantifying beryllium concentrations in plant shoots from forest ecosystems using cation‐exchange chromatography and quadrupole ICP‐MS

open access: yesAnalytical Science Advances, 2020
Beryllium (Be) is known to be one of the most toxic elements but at the same time exerts a stimulating effect on plant growth. Despite this contradiction, little is known about the Be metabolism in living organisms, partially because of the low amounts ...
David Uhlig   +3 more
doaj   +1 more source

Oxidative Stress Biomarkers in the Shrimp Macrobrachium amazonicum (Heller, 1862): Assessment in an Environmental Preservation Area in the Brazilian Amazon

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Anthropogenic activities generate a significant amount of pollutants that are released into the environment, causing physiological and ecological disturbances. Among the xenobiotics present in aquatic ecosystems, numerous chemical and organic compounds have oxidative potential or are metabolized through oxidative processes, which may amplify ...
Natália Eduarda da Silva   +6 more
wiley   +1 more source

Acetylcholinesterase Activity in Nile Tilapia (Oreochromis niloticus Linn.) Following Exposure to Carbamate Insecticide

open access: yesAnnals of Tropical Research, 2018
Acetylcholinesterase (AChE) activities were determined as affected by exposure to sublethal doses of fenobucarb (BPMC) on Nile tilapia. Fish were exposed for different periods, namely: 0, 7, 14, 21, and 28 days.
Ris Menoel R. Modina
doaj   +1 more source

Cytotoxic evaluation of sodium hypochlorite, using Pisum sativum L as effective bioindicator

open access: yes, 2019
The objective of this study was to evaluate the cytotoxic effect of different sodium hypochlorite concentrations, using apical root cells of P. sativum as a bioindicator. Initially, the seeds of P.
SALAZAR MERCADO, SEIR ANTONIO   +2 more
core   +1 more source

Environmental Contaminant Accumulation in Freshwater Turtles Inhabiting Three Rivers of the Permian Basin, New Mexico, USA

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Freshwater turtles are valuable sentinels of aquatic systems due to their long lifespans and resilience in environments impacted by contaminants. The Permian Basin, dominated by the oil and gas sector, spans western Texas and southeastern New Mexico, USA, including the Pecos River and its tributaries, the Delaware and Black Rivers.
Ana G. G. Sapp   +4 more
wiley   +1 more source

Evaluating percolation of the herbicide S-metolachlor with bioindicator plants

open access: yes, 2015
Leaching can be infl uenced by the physical characteristics of soil and precipitation when the herbicide S-metolachlor is used intensively in sugarcane areas.
Silva Junior, Antonio Carlos da [UNESP]   +4 more
core   +1 more source

Assessment of Oxidative Stress, Vitellogenin, and Human Health Risks Derived From Nile Tilapia Exposed to Metals and Metalloids in Southeastern Brazil

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Urban coastal lagoons are highly vulnerable ecosystems increasingly affected by metal contamination, as well as multiple anthropogenic stressors. This study evaluated ecotoxicological and human health risks associated with chronic metal exposure in Nile tilapia (Oreochromis niloticus) from an anthropogenically impacted lagoon in southeastern ...
Julia Araújo Alves   +8 more
wiley   +1 more source

Distribution Characteristics of Limpets Inhabiting the Rocky Intertidal Zone of the Western and Southern Coast of South Korea [PDF]

open access: yesGeo Data
As a primary grazer in intertidal ecosystems, limpets play a key role in regulating algal cover and maintaining community structure. Therefore, the distribution and species composition of limpets can serve as effective biological indicators to assess the
Ji Yeong Kim, Baek-Jun Kim
doaj   +1 more source

Home - About - Disclaimer - Privacy