Results 21 to 30 of about 26,711 (166)

Demographic buffering in natural populations: A multi‐level perspective

Journal of Animal Ecology, EarlyView.
We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos, Samuel J. L. Gascoigne, André Tavares Corrêa Dias, Maja Kajin, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

Atividade da catalase e da lactato desidrogenase em tilápias submetidas a estresse de confinamento: efeito da cor do ambiente Catalase and lactate dehydrogenase activity in tilapia subjected to contention stress: effect of the background color

Ciência Rural, 2012
Avaliaram-se os efeitos da cor do ambiente sobre o crescimento e a atividade da enzima antioxidante catalase (CAT) e da lactato desidrogenase (LDH) em tilápias do Nilo (n=24; 36,2±3,6g).
Elyara Maria Pereira-da-Silva, Mariza Pires de Melo, Ricardo Henrique Franco de Oliveira, Silvana Marina Piccoli Pugine   +3 more
doaj   +1 more source

Integração, Crescimento E Bem-Estar [PDF]

Brazilian Review of Econometrics, 1997
We present a model of growth for the case of two economies with integrated markets and where transportation costs in the form of iceberg costs are imposed. These costs will have negative impact on growth rates after integration, but will play a key role, together with scale factors, on the location of the firms of the intermediate sector.
Silva, Marcelo Leite de Moura e, Ferreira, Pedro Cavalcanti   +1 more
openaire   +2 more sources

The City as an Anti‐Growth Machine

Antipode, Volume 58, Issue 2, March 2026.
ABSTRACT Logan and Molotch's “urban growth machine” remains foundational in urban theory, describing how coalitions of landowners, developers, and politicians promote urban growth to raise land values. This paper argues that under financialized capitalism, the dynamics have inverted: asset appreciation now outweighs productive investment, and urban ...
Petter Törnberg
wiley   +1 more source

Physical and Chemical Approaches of Photovoltaic Parameters in Dye-Sensitized Solar Cells to ZnO/ZnS:rGO-Based Photoelectrodes

Applied Sciences
This study proposes an alternative process for obtaining ZnO/ZnS:rGO heterostructures for use in DSSCs and as promising materials for potential applications in other photonic process, such as photocatalysis and photodetection.
Thiago Kurz Pedra, Ramon Dadalto Carvalho, Cristian Dias Fernandes, Luciano Timm Gularte, Carolina Ferreira de Matos Jauris, Eduardo Ceretta Moreira, Mateus Meneghetti Ferrer, Cristiane Wienke Raubach, Sérgio da Silva Cava, Pedro Lovato Gomes Jardim, Elson Longo, Mario Lucio Moreira   +11 more
doaj   +1 more source

Quociente do diâmetro pela área basal e zonas de competição em povoamento monoclonal de Eucalyptus saligna

Ciência Florestal, 2011
O presente trabalho foi desenvolvido com o objetivo de estudar a relação do diâmetro e área basal, as zonas de competição, a densidade relativa e o autodesbaste em populações monoclonais de Eucalyptus saligna Smith, com base em 238 parcelas permanentes ...
Paulo Renato Schneider, César Augusto Guimarães Finger, Paulo Sérgio Pigatto Schneider, Frederico Dimas Fleig, Cláudio Thomas, Jorge Antônio de Farias   +5 more
doaj   +1 more source

Anti‐Predation and Size‐Dependent Gas Exchange Functions of Amazonian Architect Cicada Towers

Biotropica, Volume 58, Issue 2, March 2026.
Clay towers built by cicada nymphs before metamorphosis are poorly understood. We experimentally show that towers of the Amazonian cicada Guyalna chlorogena reduce predation risk and exhibit size‐dependent growth responses to gas exchange obstruction, supporting their interpretation as adaptive extended phenotypes.
Marina Mega, Izadora N. Gonzalez, Maria Luiza Busato, Sara S. Feitosa, Rodrigo F. Fadini, Pedro A. C. L. Pequeno   +5 more
wiley   +1 more source

Social media highlights the overlooked impact of cats on arthropods

Insect Conservation and Diversity, Volume 19, Issue 2, Page 460-465, March 2026.
The impact of domestic cats on vertebrate biodiversity is unequivocal; however, we still know little about their effects on arthropods. By analysing over 17,000 photos and videos from social media platforms (iStock and TikTok), we documented 550 predation events of cats on arthropods.
Leticia Alexandre, Raul Costa‐Pereira
wiley   +1 more source

Nitrogenous metabolism in Thoroughbred and Arabian foals from birth to five months of age Metabolismo do nitrogênio em potros PSI e Árabe do nascimento aos cinco meses de idade

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2006
The maturation of nitrogen metabolism was studied in six Thoroughbred and six Arabian foals. Rectal temperature, heart and respiratory rates and serum concentration of several hematochemical parameters (total protein, urea, uric acid, creatinine, and ...
G. Piccione, A. Costa, F. Fazio, F. Grasso, G. Caola   +4 more
doaj   +1 more source

Níveis de energia digestível para suínos machos castrados dos 30 aos 60 kg mantidos em ambiente de alta temperatura Digestible energy levels for barrows from 30 to 60 kg maintained in a high environment temperature

Revista Brasileira de Zootecnia, 1999
Com o objetivo de avaliar os efeitos de níveis de energia digestível (ED) sobre o desempenho e a taxa de composição da carcaça, foram usados 50 suínos machos castrados, dos 30 aos 60 kg de PV, mantidos em ambiente de alta temperatura (32,00 ± 0,88°C ...
Sandra Lúcia da Silva Tavares, Juarez Lopes Donzele, Rita Flávia Miranda de Oliveira, Aloísio Soares Ferreira, Dalton de Oliveira Fontes   +4 more
doaj   +1 more source