Results 31 to 40 of about 992 (129)

Mapping the density of giant trees in the Amazon

New Phytologist, Volume 249, Issue 1, Page 152-168, January 2026.
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
Robson Borges de Lima, Diego Armando Silva da Silva, Matheus Henrique Nunes, Paulo R. de Lima Bittencourt, Peter Groenendyk, Cinthia Pereira de Oliveira, Daniela Granato‐Souza, Rinaldo L. Caraciolo Ferreira, José A. Aleixo da Silva, Jesús Aguirre‐Gutiérrez, Toby Jackson, João R. de Matos Filho, Perseu da Silva Aparício, Joselane P. Gomes da Silva, José Julio de Toledo, Marcelino Carneiro Guedes, Danilo R. Alves de Almeida, Niro Higuchi, Fabien H. Wagner, Jean Pierre Ometto, Eric Bastos Görgens   +20 more
wiley   +1 more source

Melanoma cutâneo: estudo prospectivo de 42 casos Cutaneous melanoma: a prospective study of 42 cases

Anais Brasileiros de Dermatologia, 2011
Estudo longitudinal prospectivo de 42 casos de melanoma cutâneo revelou: 71,2% entre 50 e 79 anos; distribuição etária homogênea entre os gêneros masculino (45,1%) e feminino (54,7%); predominância de brancos (88%); localização no tronco (54,7%) (p=0,039)
Nurimar Conceição Fernandes, Roberto Calmon   +1 more
doaj   +1 more source

Across the edge: Spatial segregation drives community structure in tri‐trophic multilayer networks at a forest–grassland edge

Journal of Animal Ecology, Volume 94, Issue 11, Page 2205-2219, November 2025.
This study reveals how forest–grassland edges act as ecological barriers that shape tri‐trophic interaction networks. Using multilayer network theory, it uncovers how species influence and biodiversity patterns emerge across spatial layers, offering novel insights into edge‐driven community assembly and conservation in fire‐prone mosaics.
Henrique Negrello‐Oliveira, José Tovar‐Marquez, Milton de Souza Mendonça Júnior   +2 more
wiley   +1 more source

Filling Gap and Geographic Distribution Map of Elachistocleis helianneae Caramaschi, 2010 (Amphibia: Anura: Microhylidae)

Austral Ecology, Volume 50, Issue 6, June 2025.
ABSTRACT The genus Elachistocleis comprises fossorial frogs distributed throughout Central and South America. Despite their wide distribution, species such as Elachistocleis helianneae Caramaschi, 2010 (Anura: Microhylidae) are poorly documented due to their cryptic behaviour. Here, we present the first record of E. helianneae for the western region of
Elton Monteiro, Jade Bentes Mourão, Isabelly G. Martins, David Soares, Síria Ribeiro, Alfredo P. Santos‐Jr   +5 more
wiley   +1 more source

Efficiency of pneumatic and horizontal perforated disk meter mechanism in corn no-tillage seeders in soil with different mobilization reports Eficiência de dosadores pneumáticos e disco horizontal perfurado na semeadura direta de milho em solo com distintos históricos de mobilização

Engenharia Agrícola, 2008
This work objectified to evaluate the efficiency of two meter mechanism of corn seeds when submitted to different forward speed and soil management system during the non-tillage seeding. It was used a factorial design in randomized blocks.
Denise Mahl, Carlos E. A. Furlani, Carlos A. Gamero   +2 more
doaj   +1 more source

Four principles for improved statistical ecology

Methods in Ecology and Evolution, Volume 15, Issue 2, Page 266-281, February 2024.
Abstract Increasing attention has been drawn to the misuse of statistical methods over recent years, with particular concern about the prevalence of practices such as poor experimental design, cherry picking and inadequate reporting. These failures are largely unintentional and no more common in ecology than in other scientific disciplines, with many ...
Gordana Popovic, Tanya Jane Mason, Szymon Marian Drobniak, Tiago André Marques, Joanne Potts, Rocío Joo, Res Altwegg, Carolyn Claire Isabelle Burns, Michael Andrew McCarthy, Alison Johnston, Shinichi Nakagawa, Louise McMillan, Kadambari Devarajan, Patrick Leo Taggart, Alison Wunderlich, Magdalena M. Mair, Juan Andrés Martínez‐Lanfranco, Malgorzata Lagisz, Patrice Pottier   +18 more
wiley   +1 more source

Estimating biocontrol agent spread: A case study using introduced dung beetles

Ecological Entomology, Volume 49, Issue 1, Page 91-105, February 2024.
The average rate of spread varied between species from a high of ca. 79 km/year (E. intermedius) to a low of 28 km/year (Ont. taurus). The area of spread varied between 99,175 km2 and 34,175 km2, and abundance varied from 88,100 beetles/km2 to 4,189 beetles/km2.
Marcela Del Carmen Vieira, Jake Manger, Benedict White, Jacob D. Berson, Fiona Dempster, Theodore A. Evans   +5 more
wiley   +1 more source

O edeago na sistemática de passalídeos americanos (Coleoptera: Passalidae) [PDF]

Acta Amazonica, 1978
RESUMO Estudo do morfologia da genitália masculina dos Passalidae (Coleoptera) e da origem de seus somitas, resultando no achado de uma provável rotação do edeago, em caráter permanente, de 180° em torno do eixo longitudinal.
P. F. Bührnheim
doaj   +1 more source

Applying genomic approaches to identify historic population declines in European forest bats

Journal of Applied Ecology, Volume 61, Issue 1, Page 160-172, January 2024.
Genomic approaches can provide a better understanding of the conservation status of threatened species, within historic and contemporary contexts, and inform their conservation management. Our findings of will directly influence the definition of the Favourable Conservation Status of the barbastelle, in turn influencing considerations of the ...
Orly Razgour, Cecilia Montauban, Francesca Festa, Daniel Whitby, Javier Juste, Carlos Ibáñez, Hugo Rebelo, Sandra Afonso, Michael Bekaert, Gareth Jones, Carol Williams, Katherine Boughey   +11 more
wiley   +1 more source

Longitudinal distribution of microcrustacean biomass in three tropical reservoirs (Paraná State, Brazil) = Distribuição longitudinal da biomassa de microcrustáceos em três reservatórios tropicais (Estado do Paraná, Brasil)

Acta Scientiarum: Biological Sciences, 2007
This study evaluated the biomass distribution of microcrustaceans in three subtropical reservoirs in Brazil and the relationship among these distributions and some limnological variables in the reservoirs.
Claudia Costa Bonecker, Martín César María Blettler   +1 more
doaj