Results 161 to 170 of about 62,438 (295)

Effects of land management on soil carbon storage in the Brazilian Amazon

Agrosystems, Geosciences &Environment, Volume 9, Issue 2, June 2026.
Abstract This study assessed the influence of land use on soil physical and chemical properties and evaluated machine learning (ML) models for predicting soil organic carbon (SOC) content and stocks in the top 0–30 cm layer across selected sites in the Brazilian Amazon. A total of 649 georeferenced samples of surface soil were analyzed for soil texture,
Gizachew Ayalew Tiruneh, Ciro Abbud Righi, Jefferson Lordello Polizel, Vinicius Gonçalves, Carlos Rodrigues Pereira   +4 more
wiley   +1 more source

A new species of <i>Asymphyloptera</i> Collin (Diptera, Empididae, Clinocerinae) from the Colombian Andean-Amazon cloud forest, and an updated key to males of South American species. [PDF]

Zookeys
Ramos-Pastrana Y, Córdoba-Suarez E, Gamboa J.   +2 more
europepmc   +1 more source

FLUJO DE ENERGÍA EN UN SISTEMA CULTIVO DE Cratylia argentea (Desv.) O. Kuntze EN LA AMAZONIA COLOMBIANA

, 2018
Se evaluó el flujo de energía y la sostenibilidad de un cultivo de la especie forrajera Cratylia argentea (Desv.) O. Kuntze en un área de 0,2 ha en una zona de bosque húmedo tropical (bh-T), a 269 msnm, con una precipitación promedio de 3600 mm anuales ...
Restrepo Llanos, Alfonso, Chavarro, Jhon Alexánder, Muñoz Murcia, Alfonso Julian, Gomez Mosquera, Miller   +3 more
core  

Compositional Characterization, Quality Parameters, and Physicochemical and Bioactive Properties of Pequi ( Caryocar brasiliense ) Oils From Xingu and Cerrado in Mato Grosso, Brazil

Journal of the American Oil Chemists' Society, Volume 103, Issue 6, Page 609-622, June 2026.
Cerrado oil is richer in MUFA and antioxidant compounds, while Xingu oil shows higher SFA and enhanced oxidative stability, reinforcing the potential of pequi oil as a sustainable bioactive ingredient. ABSTRACT Pequi ( Caryocar brasiliense ) is a native fruit widely distributed in Brazilian biomes, specially in Cerrado, known for its high oil yield and
Dhayna O. Sobral, Patrícia T. Souza, Gabriel S. L. Pereira, Sara Fraga, Maria E. O. Carvalho, Antonio J. A. Meirelles, Eduardo A. C. Batista, Klicia A. Sampaio, Guilherme J. Maximo   +8 more
wiley   +1 more source

Forest recovery pathways after fire, drought, and windstorms in southeastern Amazonia. [PDF]

Proc Natl Acad Sci U S A
Maracahipes L, Brando PM, Silvério DV, Maracahipes-Santos L, Silveiro AC, Verona L, Macedo MN, Trumbore S, Lenza E, Starinchak B, Potter N, Herrera-Ramírez D, Barros FV, Uribe MDR, Byrnes L, Andrade AFA, Rocha EX, Rattis L, Nunes TF, Oliveira RS.   +19 more
europepmc   +1 more source

Phylogeny of the Electric Rays of the Family Narcinidae (Gill, 1862): Systematic Review and Evidence of the Dispersal Routes to America

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The family Narcinidae has a cosmopolitan distribution; however, its systematic composition and phylogenetic position within Torpediniformes remain poorly understood. This study evaluates the evolutionary and biogeographic history of the family Narcinidae and investigates its distribution patterns using molecular systematics.
Luis Fernando da Silva Rodrigues‐Filho, Richard Klein Castro Silva, Eduardo Lopes de Lima, Raquel Sicca‐Ramirez, Getúlio Rincon, Jorge Luiz Silva Nunes, Iracilda Sampaio, João Braullio de Luna Sales   +7 more
wiley   +1 more source

Avaliacao do estado nutricional do cupuacuzeiro (Theobroma grandiflorum (Willd. ex Spreng.) Schum.) em um sistema agroflorestal na Amazonia Central.

, 2014
Avaliacao do estado nutricional do cupuacuzeiro, e definicao da melhor epoca de amostragem e a idade da folha para diagnose nutricional, em um sistema agroflorestal na Amazonia Central (Manaus-AM, Brasil). Os menores teores de nutrientes no tecido foliar
MACEDO, J. L. V. de, CRAVO, M. da S., FIGUEREDO, N. N.   +2 more
core  

Unveiling the Global Linnean Shortfall in Leptophlebiidae (Ephemeroptera, Insecta): Historical Trends and Conservation Implications

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT Understanding how many species exist on Earth is a fundamental yet challenging question in biology, with significant implications for biodiversity conservation. The Linnean shortfall, or the gap in taxonomic knowledge, remains a major obstacle, particularly in highly diverse groups like insects. This study focuses on the family Leptophlebiidae
Myllena Lima, Tiago M. S. Freitas, Leandro Schlemmer Brasil, Leandro Juen, Michel Sartori, Eduardo Domínguez, Helen M. Barber‐James, Isabel Cristina H. Cortes, Ina S. Ferreira, Fatima Jabeen, Frederico F. Salles   +10 more
wiley   +1 more source

Vascular access in Pará: clinical and epidemiological aspects of patients on renal replacement therapy at the largest specialist center in Pará state, Brazil. [PDF]

J Vasc Bras
Dos Reis JMC, Silva IB, Monteiro MGPB, Guerra MMNB, da Costa DL, Rodrigues FFP, de Andrade MC.   +6 more
europepmc   +1 more source

Molecular Insights and Repellent Efficacy of the Essential Oil and Major Compounds From Piper cyrtopodon (Miq.) C.DC (Piperaceae) Against Aedes aegypti (Linnaeus, 1762) (Culicidae)

Archiv der Pharmazie, Volume 359, Issue 6, June 2026.
The essential oil and major compounds from Piper cyrtopodon exhibit potent, long‐lasting repellent activity against Aedes aegypti mosquitoes, combined with low cytotoxicity and favorable molecular docking interactions with odorant‐binding proteins. These findings highlight its potential for the development of alternative products for bite prevention ...
Maria L. L. da Costa, Renata G. de Azevedo, Sergio M. Nunomura, Rita de C. S. Nunomura, Gemilson S. Pontes, Rosemary A. Roque, Tatiane P. de Souza, André C. de Oliveira   +7 more
wiley   +1 more source