Results 1 to 10 of about 11,888 (283)

Thermocyclops decipiens (Kiefer, 1929) (Copepoda, Cyclopoida) as indicator of water quality in the State of Minas Gerais, Brazil

open access: yesBrazilian Archives of Biology and Technology, 2007
The aim of this work was to study the possible utilization of Thermocyclops decipiens as indicator of the trophic degree and water quality of some watersheds of the state of Minas Gerais. From the beginning of the decade of 90, T.
Giovanni Guimarães Landa   +3 more
doaj   +1 more source

Potencial de lixiviação de imazapic e isoxaflutole em colunas de solo Leaching potential of imazapic and isoxaflutole in soil columns

open access: yesPlanta Daninha, 2007
Diante da intensa utilização de herbicidas, este trabalho objetivou avaliar o potencial de lixiviação de imazapic e isoxaflutole em colunas de solo, com amostras de Latossolo Vermelho distrófico (LVd - textura franco-arenosa) e Latossolo Vermelho ...
M.H. Inoue   +3 more
doaj   +1 more source

Adult Honeybees and Beeswax as Indicators of Trace Elements Pollution in a Vulnerable Environment: Distribution among Different Apicultural Compartments

open access: yesMolecules, 2022
Bees in search of diet sources intensively fly within a radius of up to 3 km, encountering nectar, pollen, and water sources which are potentially contaminated. Consequently, their products can provide valuable information about potential pollution.
Effrosyni Zafeiraki   +5 more
doaj   +1 more source

Evaluation of the cytotoxic and genotoxic potential of waters of the Paraíba do Sul River Basin - RJ through the Allium cepa test system

open access: yesRevista Ambiente & Água, 2020
The public water supply of the Rio de Janeiro metropolitan region is highly dependent on transposition from the Paraíba do Sul River: 70% of the water is diverted to the Piraí River and then passes through a series of other rivers and reservoirs, finally
Emanoelly Barbosa Sacramento   +4 more
doaj   +1 more source

Copper content in soils and litter from fruit orchards in Central Chile and its relationship with soil microbial activity

open access: yesPlant, Soil and Environment, 2022
This study assessed both the soil and litter copper (Cu) levels and their relationships with soil microbial activity, in fruit-tree production areas of central Chile where Cu-based pesticides are intensively sprayed.
J. Tomás Schoffer   +6 more
doaj   +1 more source

Herbicides and nutrients interaction on earthworm activity in tomato cultivated soil and toxicity appraisal

open access: yesPlant, Soil and Environment, 2023
While nutrients are administered through various sources and combinations, herbicides are used for pre-plant and pre-emergence weed control in the tomato fields. Therefore, a study was conducted to understand the effects of nutrient fertilisation through
Pavani Yerra   +5 more
doaj   +1 more source

Morphometric changes on dung beetle Dichotomius problematicus (Coleoptera: Scarabaeidae: Scarabaeinae) related to conversion of forest into grassland: A case of study in the Ecuadorian Amazonia

open access: yesEcology and Evolution, 2023
The conversion of forest into grassland can induce differentiation in the functional morphology of resilient species. To assess this effect, we have chosen a dung beetle Dichotomius problematicus, as a model species.
Diego Marín‐Armijos   +2 more
doaj   +1 more source

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

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