Results 31 to 40 of about 339 (149)

Evaluation of spectral indices for mapping burned areas using unsupervised classification in different ecosystems using spectral indices from Sentinel-2 images

Revista Brasileira de Cartografia, 2023
O fogo é um dos agentes naturais de maior impacto no ecossistema terrestre e desempenha importante função ecológica em grande parte da superfície terrestre.
Juarez Antonio da Silva Júnior, Admilson da Penha Pacheco   +1 more
doaj  

The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

Biotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa, Sandra Bibiana Correa, Florian Wittmann, Jochen Schöngart, Maria Teresa Fernandez Piedade, Efrem Jorge Ferreira, Leonardo Maltchik   +6 more
wiley   +1 more source

Entomological surveillance of Chagas disease in Berilo municipality, Jequitinhonha Valley, State of Minas Gerais, Brazil Vigilância Entomológica da doença de Chagas no município de Berilo, Vale do Jequitinhonha, Estado de Minas Gerais, Brasil [PDF]

, 2009
This study aimed to evaluate the Chagas Disease Control Program which has operated since 1982 in the municipality of Berilo in the Jequitinhonha Valley, Minas Gerais, Brazil, based on evaluation of 5,242 domiciliary units (DUs) and 7,807 outbuildings ...
Liléia Diotaiuti, Diotaiuti, Liléia, Lana, Marta de, Azeredo, Bernardino Vaz de Mello, Marta de Lana, Bernardino Vaz de Mello Azeredo, De Lana, Marta, Gorla, David, Diotaiuti, Liléia Gonçalves, Assis, Girley Francisco Machado de, David Gorla, Machado De Assis, Girley Francisco, Girley Francisco Machado de Assis, Gorla, David Eladio   +13 more
core   +1 more source

Unravelling the drivers of island species richness in tropical savannas

Journal of Ecology, Volume 114, Issue 4, April 2026.
Murundu island area explains a substantial proportion of the variation in tree and herb richness, consistent with Island Biogeography Theory. On average, a 10% increase in island size corresponds to increases of seven tree species and 7.8 herb species.
Henrique A. Mews, Denis S. Nogueira, Ben Hur Marimon‐Junior, Reginaldo Constantino, Oliver L. Phillips, Beatriz S. Marimon   +5 more
wiley   +1 more source

Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change

Global Change Biology, Volume 32, Issue 4, April 2026.
The Brazilian Cerrado's forest structure relies disproportionately on just 30 hyperdominant tree species, which represent 50% of all individuals despite accounting for only 2% of species richness. This study evaluates their vulnerability under climate change scenarios for 2100.
Facundo Alvarez, Ben Hur Marimon‐Junior, Beatriz Schwantes Marimon, Wesley Jonatar Alves da Cruz, Norberto Gomes Ribeiro Júnior, Raiane Gonçalves Béu, Polyanna da Conceição Bispo, Aldair de Souza Medeiros, Glécio Machado Siqueira, Marcelo Leandro Bueno, Fabiana de Gois Aquino, Frederico Augusto Guimarães Guilherme, José Roberto Rodrigues Pinto, Henrique Augusto Mews, Bruno Machado Teles Walter, Sabrina do Couto de Miranda, Ricardo Flores Haidar, Eddie Lenza de Oliveira, Renata Dias Françoso Brandão, Eraldo Aparecido Trondoli Matricardi, Cássia Beatriz Rodrigues Munhoz, Edson de Souza Lima, Maria Antônia Carniello, Mercedes Maria da Cunha Bustamante, Paulo Sérgio Morandi, Edmar Almeida de Oliveira, Zenésio Finger, Eder Carvalho das Neves, Fernando Elias, Immaculada Oliveras Menor, Simone Matias de Almeida Reis, Oliver Phillips, Ted R. Feldpausch   +32 more
wiley   +1 more source

Multiscale Environmental Drivers of Aquatic Insect Assemblages in Cerrado Streams

Austral Ecology, Volume 51, Issue 3, March 2026.
Multi‐scale drivers of aquatic insect communities in Cerrado streams. The gradient (from left to right) indicates increasing spatial scale, showing that abundance is influenced by local factors (conductivity, temperature), taxonomic richness responds to agricultural land use at an intermediate scale, and community composition is structured by regional ...
Juliana Simião‐Ferreira, Isabella Milhomem de Paiva Almeida, Victor Yuri da Silva Moreira, Hugo de Oliveira Barbosa, Daniel de Paiva Silva, Sara Lodi, Daniel Albeny‐Simões, Maisa Carvalho Vieira, Hasley Rodrigo Pereira, Bruno Spacek Godoy   +9 more
wiley   +1 more source

DIVERSIDADE E PADRÕES DE DISTRIBUIÇÃO ESPACIAL DE ESPÉCIES NO ESTÁGIO DE REGENERAÇÃO NATURAL EM SÃO FRANCISCO DE PAULA, RS, BRASIL

, 2012
This work aimed the analysis of floristic diversity and spatial distribution of species of natural regeneration in an area of Mixed Rainy Forest in the National Forest of São Francisco de Paula, RS, comparing different diversity and dispersion indexes ...
Narvaes, Igor da Silva, Longhi-Santos, Tomaz, Kanieski, Maria Raquel, Soares, Philipe Ricardo Casemiro, Callegaro, Rafael Marian, Longhi, Solon Jonas   +5 more
core   +2 more sources

Spatial distribution of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) in citrus orchards Distribuição espacial de Diaphorina citri Kuwayama (Hemiptera: Psyllidae) em pomares de citros [PDF]

, 2010
The psyllid Diaphorina citri Kuwayama is one of the most important pests of citrus, mainly because it is the vector of the bacterium that causes huanglongbing (HLB) or 'Greening' disease.
BARBOSA, José Carlos, Pedro Takao Yamamoto, José Carlos Barbosa, Costa, Marilia Gregolin [UNESP], COSTA, Marilia Gregolin, Barbosa, José Carlos [UNESP], Yamamoto, Pedro Takao, Marilia Gregolin Costa, Renata Moreira Leal, LEAL, Renata Moreira, Leal, Renata Moreira [UNESP]   +10 more
core   +1 more source

Ecological function over evolutionary legacy: The limited role of shared evolutionary history in shaping modern frugivory interactions

Functional Ecology, Volume 39, Issue 12, Page 3688-3703, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Frugivory, encompassing interactions between vertebrates and plants that range from mutualistic to antagonistic, drives seed dispersal and underpins the structure and resilience of tropical ecosystems.
Lisieux Fuzessy, Miguel Verdú, Marco Aurelio Pizo   +2 more
wiley   +1 more source

Distribuição espacial da cigarrinha Empoasca kraemeri Ross & Moore (Hemiptera: Cicadelidae) no feijão-de-corda e cálculo do número de amostras

Arquivos do Instituto Biológico
Objetivou-se estudar a dispersão espacial da cigarrinha Empoasca kraemeri Ross & Moore (Hemiptera: Cicadelidae) na cultura de feijão-de-corda Vigna unguiculata (L.) Walp.
Valéria Silva, Gleidson Vieira Lozano, Jefté Ferreira da Silva, Bleicher Ervino   +3 more
doaj   +1 more source