Results 11 to 20 of about 452,644 (171)

Seasonality in niche occupation revealed through bird community functional structure in the southern Atlantic rainforest

Ibis, Volume 165, Issue 3, Page 986-997, July 2023., 2023
Seasonal variation in tropical and subtropical systems can have different effects on bird species depending on the resources they use and how they use them. However, despite recent research advances, knowledge of the drivers of the presence and abundance of species in different seasons is still limited for most tropical bird species.
Bia A. Almeida, Gabriela M. Bochio, Larissa C. Calsavara, Fernanda C. Marques, Luiz dos Anjos   +4 more
wiley   +1 more source

Large‐scale impacts of selective logging on canopy tree beta‐diversity in the Brazilian Amazon

Journal of Applied Ecology, Volume 60, Issue 6, Page 1181-1193, June 2023., 2023
Minimal impacts on tree beta‐diversity across large spatial scales points towards the retention of substantial conservation value in logged tropical forests. Strong subtractive heterogenization in very large trees indicates the breakdown of broad scale patterns of composition with potential negative consequences for recruitment processes, fauna reliant
Christopher G. Bousfield, Mike R. Massam, Carlos A. Peres, David P. Edwards   +3 more
wiley   +1 more source

Variation of non‐structural carbohydrates across the fast–slow continuum in Amazon Forest canopy trees

Functional Ecology, Volume 36, Issue 2, Page 341-355, February 2022., 2022
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Tropical tree species span a range of life‐history strategies within a fast–slow continuum. The position of a species within this continuum is thought to reflect a negative relationship between growth and storage, with fast‐growing species allocating ...
Caroline Signori‐Müller, Rafael S. Oliveira, Julia Valentim Tavares, Francisco Carvalho Diniz, Martin Gilpin, Fernanda de V. Barros, Manuel J. Marca Zevallos, Carlos A. Salas Yupayccana, Alex Nina, Mauro Brum, Timothy R. Baker, Eric G. Cosio, Yadvinder Malhi, Abel Monteagudo Mendoza, Oliver L. Phillips, Lucy Rowland, Norma Salinas, Rodolfo Vasquez, Maurizio Mencuccini, David Galbraith   +19 more
wiley   +1 more source

Effects of forest degradation on Amazonian ferns in a land‐bridge island system as revealed by non‐specialist inventories

Ecological Solutions and Evidence, Volume 3, Issue 1, January–March 2022., 2022
Tropical forests have been rapidly deforested and degradation worldwide has outpaced biodiversity field sampling. We here show that a simple sampling protocol carried out by a non‐specialist can lead to inexpensive and highly reliable ecological data.
Gabriela Zuquim, Maíra Benchimol, Rafael Tonon, Carlos A. Peres, Danielle Storck‐Tonon   +4 more
wiley   +1 more source

Frugivory underpins the nitrogen cycle

Functional Ecology, Volume 35, Issue 2, Page 357-368, February 2021., 2021
A free Plain Language Summary can be found within the Supporting Information of this article. Abstract Tropical rainforests are populated by large frugivores that feed upon fruit‐producing woody species, yet their role in regulating the cycle of globally important biogeochemical elements such as nitrogen is still unknown.
Nacho Villar, Claudia Paz, Valesca Zipparro, Sergio Nazareth, Leticia Bulascoschi, Elisabeth S. Bakker, Mauro Galetti, Shawn Leroux   +7 more
wiley   +1 more source

Radial-Artery or Saphenous-Vein Grafts in Coronary-Artery Bypass Surgery [PDF]

, 2018
BACKGROUND: The use of radial-artery grafts for coronary-artery bypass grafting (CABG) may result in better postoperative outcomes than the use of saphenous-vein grafts.
Benedetto, Umberto, ?, ?, Mario Gaudino, Angelini, Gianni D, Umberto Benedetto, (RADIAL Investigators), Gaudino, Mario, Angelini (Gianni D)   +7 more
core   +1 more source

Estudo anatômico das madeiras dos gêneros Anisophyllea R. Brow ex. sabine e Polygonanthus Ducke. (Rhizophoraceae) [PDF]

Acta Amazonica, 1988
Neste trabalho, é feito o estudo dos caracteres anatômicos de 1 (uma) espécie do gênero Anlsophylleae de 2 (duas) espécies do gênero Polygonanthus(Rhizophoraceae) e para cada espécie são apresentadas: características gerais, descrição macro e microscópía,
Jorge Alves de Freitas
doaj   +1 more source

Variação da retrabilidade da madeira de Eucalyptus grandis Hill ex. Maiden, em função da idade e da posição radial no tronco Influence of age and radial position on the volumetric and linear shrinkage of Eucalyptus grandis Hill ex. Maiden wood

Revista Árvore, 2006
Este trabalho estudou a variação das retratibilidades volumétrica e linear da madeira de Eucalyptus grandis proveniente de talhões comerciais de quatro diferentes idades (10, 14, 20 e 25 anos) e posição radial.
José de Castro Silva, José Tarcísio Silva Oliveira, Bruno Almeida Xavier, Vinícius Resende Castro   +3 more
doaj   +1 more source

Variação dimensional das traqueídes ao longo do caule de Podocarpus lambertii Klotzsch ex Endl., Podocarpaceae Size variation of tracheids in the stem of Podocarpus lambertii Klotzsch ex Endl., Podocarpaceae

Acta Botânica Brasílica, 2006
O presente estudo foi desenvolvido com o objetivo de avaliar a variação dimensional das traqueídes ao longo do caule de Podocarpus lambertii Klotzsch ex Endl.
Leila Teresinha Maranho, Franklin Galvão, Graciela Inez Bolzon de Muñiz, Yoshiko Saito Kuniyoshi, Karla Heloise Preussler   +4 more
doaj   +1 more source

Identification of Nonlinear Systems Using Radial Basis Function Neural Network [PDF]

, 2014
This paper uses the radial basis function neural network (RBFNN) for system identification of nonlinear systems. Five nonlinear systems are used to examine the activity of RBFNN in system modeling of nonlinear systems; the five nonlinear systems are ...
Pislaru, Crinela, Shebani, Amer
core   +4 more sources