Results 21 to 30 of about 5,414 (236)

Ecotoxicidade de herbicidas para a macrófita aquática (Azolla caroliniana) Ecotoxicity of herbicides for the aquatic macrophyte (Azolla caroliniana)

open access: yesPlanta Daninha, 2012
Os objetivos deste estudo foram avaliar Azolla caroliniana como planta-teste em estudos ecotoxicológicos e estimar a CL50;7d dos herbicidas 2,4-D, glyphosate, clomazone e oxyfluorfen. As plantas foram aclimatadas em sala de bioensaio.
A.F. Silva   +3 more
doaj   +1 more source

Heavy metals in the clam Tivela mactroides Born, 1778 (Bivalvia: Veneridae) from coastal localities with different degrees of contamination in Venezuela

open access: yesCiencias Marinas, 2004
We compared heavy metal levels (manganese, iron, zinc, cadmium, copper, chromium, and lead) in tissues and shells of juveniles (13±2.2 mm), medium-size organisms with mature gonads (25±4.1mm), and adults (35±1.2 mm) of the clam Tivela mactroides from ...
V Acosta, C Lodeiros
doaj   +1 more source

Molecular detection of Escherichia coli isolated from human, animal and environmental samples targeting mdh gene: A simple one health approach

open access: yesJournal of Microbiology and Infectious Diseases, 2023
Background: Escherichia coli cause a wide range of infections in humans and animals in hospitals and community associated with multidrug-resistance, and serves as bioindicator of fecal contamination as well as AMR.
Urmy Biswas, Abhi Mallick, Surojit Das
doaj   +1 more source

Bioindicators and Biomarkers

open access: yesMexican Journal of Medical Research ICSA, 2013
The health of an ecosystem can be examined through the use of bioindicators (BI), while the health of a human being can be determined using some molecules such as biomarkers (BM). BI are complete organisms or part of them that can be measured to detect changes in the environment, the presence of pollution and its effect on the ecosystem, as well as the
Alejandra Hernández-Ceruelos   +3 more
openaire   +2 more sources

Heavy Metal Contamination: Impacts From Plants to the Food Chain and Eco‐Friendly Amelioration Strategies

open access: yesAgriFood: Journal of Agricultural Products for Food, EarlyView.
Heavy metal pollution reduces soil health and threatens food safety by entering plants; however, the use of nanoparticles, biofertilizers, and organic fertilizers such as biochar offers a promising strategy for improvement and sustainable agriculture. ABSTRACT Heavy metal (HM) pollution, resulting from human activities such as mining and the excessive ...
Sina Siavash Moghaddam   +4 more
wiley   +1 more source

Atmospheric mercury uptake to foliage using in situ and transplanted lichens at the New Almaden Mining District, California, United States

open access: yesFrontiers in Environmental Chemistry
Contaminated soils at former mercury (Hg) mines release Hg into the atmosphere that can be absorbed by the surrounding foliage and potentially contribute to inputs of Hg to downstream reservoirs and the food chain.
Peter Weiss-Penzias   +6 more
doaj   +1 more source

Real‐time monitoring of root dielectric properties for assessing crop plant damage caused by foliar application of glyphosate

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise There is a knowledge gap regarding how foliar injury and restricted water uptake can be detected by measuring root dielectric response. This pot study nondestructively evaluated the efficiency of real‐time dielectric measurement to monitor the effects of glyphosate spraying.
Imre Cseresnyés   +2 more
wiley   +1 more source

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

open access: yesThe Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo   +4 more
wiley   +1 more source

Bioindicating entomofauna of the Algodonal river, La Ermita, Norte de Santander

open access: yesRevista Ingenio, 2014
The Algodonal River is one of the most important bodies of water in the department of Norte de Santander. Could a study of the biodiversity of insects associated with the Algodonal River basin determine the quality of the water that is being purified ...
Jose Arnoldo Granadillo Cuello
doaj   +1 more source

Between and Within Bay Differences in Mesozooplankton Assemblages in the Central and Eastern Baltic Sea: An Exploratory Study

open access: yesBiological Diversity, EarlyView.
Mesozooplankton assemblages differed significantly both between and within Baltic Sea bays, driven mainly by local salinity and temperature gradients. Distinct communities occurred over distances of less than 1 km, demonstrating strong fine‐scale spatial variability.
Neele Schmidt, Amanda Adam Jansson
wiley   +1 more source

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