Results 11 to 20 of about 1,210 (117)

Vegetation cover and biodiversity reduce parasite infection in wild hosts across ecological levels and scales

open access: yesEcography, Volume 2023, Issue 5, May 2023., 2023
Land use changes and biodiversity loss critically disrupts ecosystem functioning and are major drivers of infectious disease outbreaks. Trypanosoma cruzi, the agent of Chagas disease, is a multi‐host parasite whose epidemiology has changed due to the expansion of anthropogenic activities over natural areas.
Cecilia S. Andreazzi   +8 more
wiley   +1 more source

Socioenvironmental Factors Influencing Distribution and Intensity of Soil‐Transmitted Helminthiasis in the Brazilian Amazon: Challenges for the 2030 Agenda

open access: yesJournal of Tropical Medicine, Volume 2021, Issue 1, 2021., 2021
Soil‐transmitted helminthiasis (STHs) are poverty‐related diseases with high prevalence rates in developing countries. The present study aims to describe the epidemiological scenario of STHs in an urban population in the Brazilian Amazon. A cross‐sectional survey (n = 349 children aged 1–15 years) was carried out to obtain faecal samples and ...
Deiviane Aparecida Calegar   +8 more
wiley   +1 more source

Variações no Índice Estado Trófico em Águas de três reservatórios no Ceará: resultados de uma estiagem prolongada [PDF]

open access: yesRevista DAE
No semiárido brasileiro, a qualidade da água nos reservatórios sofre acentuada degradação devido à eutrofização artificial. Isso limita seus usos múltiplos, com impacto especial sobre os sistemas de abastecimento humano.
Andreza Dnarla Oliveira Santos   +3 more
doaj   +1 more source

Carrapatos do gênero amblyomma (acari: ixodidae) e suas relações com os hospedeiros em área endêmica para febre maculosa no Estado de São Paulo Ticks of genus Amblyomma (Acari: Ixodidae) and their relationship with hosts in endemic area for spotted fever in the state of São Paulo

open access: yesRevista Brasileira de Parasitologia Veterinária, 2008
Foram avaliadas 7 espécies da mastofauna e 36 da avifauna quanto à prevalência e intensidade de infestação por carrapatos na ESALQ/USP, no Município de Piracicaba, SP.
Carlos Alberto Perez   +10 more
doaj   +1 more source

Rio Doce Acoustic Surveys of Fish Biomass and Aquatic Habitat

open access: yesIntegrated Environmental Assessment and Management, Volume 16, Issue 5, Page 615-621, September 2020., 2020
ABSTRACT Following the failure of the Fundão mine tailings dam in Brazil, approximately 32 million cubic meters of Fe ore tailings were released into the downstream riverine system. The postevent monitoring surveys implemented the use of noninvasive acoustic methods to improve the understanding of the fish biomass distribution patterns and aquatic ...
Dustin Hobbs   +2 more
wiley   +1 more source

Infections with Giardia duodenalis and Entamoeba histolytica/Entamoeba dispar as Hidden and Prevalent Conditions in Periurban Communities in the State of Rio de Janeiro, Brazil

open access: yesJournal of Tropical Medicine, Volume 2020, Issue 1, 2020., 2020
This study aims to assess the prevalence, distribution, and etiological profile of intestinal parasitism in children living in periurban areas in Cachoeiras de Macacu, Rio de Janeiro, Brazil. A community‐based cross‐sectional survey (n = 479) was carried out. Prevalence of infection with G. duodenalis and E. histolytica/E.
Deiviane A. Calegar   +7 more
wiley   +1 more source

Abundância de tecamebas no plâncton de reservatórios do Estado do Paraná- DOI: 10.4025/actascibiolsci.v26i4.1522

open access: yesActa Scientiarum: Biological Sciences, 2008
Este trabalho teve o objetivo de investigar os padrões de distribuição espacial e temporal da abundância de tecamebas (Rhizopoda) no plâncton de diferentes reservatórios do Estado do Paraná bem como a importância de fatores hidrodinâmicos e morfométricos
Luiz Felipe Machado Velho   +4 more
doaj   +1 more source

Degradation of the Organochlorinated Herbicide Diuron by Rainforest Basidiomycetes

open access: yesBioMed Research International, Volume 2020, Issue 1, 2020., 2020
The main organochlorinated compounds used on agricultural crops are often recalcitrant, affecting nontarget organisms and contaminating rivers or groundwater. Diuron (N‐(3,4‐dichlorophenyl)‐N ′,N ′‐dimethylurea) is a chlorinated herbicide widely used in sugarcane plantations.
Caroline Henn   +6 more
wiley   +1 more source

Estrutura populacional de espécies do gênero Cichla (Osteichthyes: Cichliformes) introduzidas em diferentes regiões brasileiras

open access: yesBiodiversidade Brasileira, 2022
Os sistemas de água doce neotropicais são importantes abrigos da biodiversidade global de peixes. Os tucunarés (Cichla spp) são peixes endêmicos dessa região biogeográfica, ocorrendo naturalmente no Brasil e outros países da América do Sul como ...
Lucas Cabrera Monteiro
doaj   +1 more source

Geostatistical techniques applied to mapping limnological variables and quantify the uncertainty associated with estimates

open access: yesActa Limnologica Brasiliensia, 2015
Aim: This study aimed to map the concentrations of limnological variables in a reservoir employing semivariogram geostatistical techniques and Kriging estimates for unsampled locations, as well as the uncertainty calculation associated with the estimates.
Cristiano Cigagna   +3 more
doaj   +1 more source

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