Results 61 to 70 of about 289,781 (276)

Nuestra Comunidad: The Role of Latin American Networks in Supporting Ecologists Throughout Their Careers

The Bulletin of the Ecological Society of America, EarlyView.
Shersingh Joseph Tumber‐Dávila, Angelique Rosa Marín, Rodrigo Felipe Rodrigues do Carmo, Sergio González‐Mollinedo, Luis Y. Santiago‐Rosario, Coral del Mar Valle Rodríguez   +5 more
wiley   +1 more source

Carbon, Nitrogen, and Corresponding Stable Isotope Signatures Reveal Channel Banks as Major Sediment Sources in a Tropical Agricultural Watershed

Land Degradation &Development, EarlyView.
ABSTRACT Uncertainties about the applicability of δ13C and δ15N as tracers of sediment sources in tropical river basins highlight the need for more in‐depth investigations of these isotopes. This study therefore assessed the effectiveness of δ13C and δ15N signatures in discriminating sediment sources in an agricultural catchment in Northeast Brazil ...
Fábio Farias Amorim, Yuri Jacques Agra Bezerra da Silva, Rennan Cabral Nascimento, Ygor Jacques Agra Bezerra da Silva, Angelo Jamil Maia, Tales Tiecher, Jean Paolo Gomes Minella, Yusheng Zhang, Hari Ram Upadhayay, Simon Pulley, Adrian L. Collins   +10 more
wiley   +1 more source

Levantamento arqueológico da bacia sedimentar do Jatobá - PE

Revista de Arqueologia, 1994
A bacia sedimentar do Jatobá localiza-se no Estado de Pernambuco, configura-se por apresentar uma considerável concentração de abrigos sob-rocha com registros rupestres da Tradição Agreste.
Ana Nascimento, Cláudia Alves, Suely Luna   +2 more
doaj   +1 more source

Wasting syndrome as a predictive factor for adverse health outcomes in older adults: A prospective cohort study

Nutrition in Clinical Practice, EarlyView.
Abstract Wasting syndrome (WS), also known as unintentional weight loss, is defined as a 5% reduction in body weight over a period of 6–12 months. The mortality associated with WS in older adults has not been adequately explored. The objective of this study was to investigate this relationship in hospitalized older individuals over an 18‐month period ...
Roana Carolina Bezerra dos Santos, Cláudia Porto Sabino Pinho, Eduila Maria Couto Santos, Maria Caroline da Silva Patricio, Stefany Beatriz do Nascimento, Letícia Sabino Santos, Taynara de Sousa Rego Mendes, Alcides da Silva Diniz   +7 more
wiley   +1 more source

ARQUEOLOGIA SUBAQUÁTICA: IDENTIFICAÇÃO DAS CAUSAS DE NAUFRÁGIOS NOS SÉCULOS XIX E XX NA COSTA DE PERNAMBUCO

Clio Arqueológica, 2010
No estado de Pernambuco, do período do descobrimento até a atualidade, ocorreram cerca de trezentos naufrágios, dos quais 87% não tem a localização e a história conhecida.
Carlos Rios
doaj  

Taxonomic treatment, geographic distribution and preliminar conservation status of Croton sect. Barhamia subsect. Barhamia (Euphorbiaceae) in Brazil

Nordic Journal of Botany, EarlyView.
The genus Croton (Euphorbiaceae) is an exceptionally megadiverse genus, encompassing roughly 1200 species that are predominantly distributed across tropical regions globally. For the New World, the genus is organized into three subgenera (Adenophylli, Geiseleria and Quadrilobi) and 31 sections, with C. sect. Barhamia standing out with its approximately
Nicolas Giovanny Burilli, Amanda da Paixão Noronha Pereira, Maria Beatriz Rossi Caruzo   +2 more
wiley   +1 more source

CARACTERIZAÇÃO DOS SÍTIOS PRÉ-HISTÓRICOS COM GRAFISMOS RUPESTRES NO ESTADO DE PERNAMBUCO, BRASIL

Clio Arqueológica, 2017
O acelerado processo de deterioração dos sítios achados por sua exposição a impactos naturais e antrópicos originou a necessidade de sistematizar a descoberta através de planejamento geomorfológico e cartográfico.
Anne Marie Pessis, Daniela Cisneiros, Demétrio Mutzenberg, Gabriela Martin, Henry Lavalle   +4 more
doaj   +1 more source

Critical behavior of the S=1/2 Heisenberg ferromagnet: A Handscomb quantum Monte Carlo study

, 2000
We investigate the critical relaxational dynamics of the S=1/2 Heisenberg ferromagnet on a simple cubic lattice within the Handscomb prescription on which it is a diagrammatic series expansion of the partition function that is computed by means of a ...
Costa, U. M. S., de Souza, A. J. F., Lyra, M. L.   +2 more
core   +1 more source

Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil

Nordic Journal of Botany, EarlyView.
This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho, Dennys Victor e Souza Silva, William Matzenauer, Yuri Couceiro, Marccus Alves   +4 more
wiley   +1 more source

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

Oikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz, Luis M. Primo, Francisco A. R. Santos, Isabel C. Machado   +3 more
wiley   +1 more source