Results 21 to 30 of about 9,553 (184)

Advancing conservation breeding programs for marine invertebrates

Conservation Biology, EarlyView.
Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam, Bart Shepherd, Kylie Lev, Rebecca Albright   +3 more
wiley   +1 more source

Cualidades del paisaje construido de la vivienda y su impacto en la morfología y densidades de Bogotá

Revista INVI, 2019
Diferentes estudios internacionales han catalogado a Bogotá, Colombia, como una de las ciudades con mayor densidad del mundo, sin embargo, al interior esta densidad está matizada por las características diferenciales del paisaje construido de la vivienda.
Juan G. Yunda, Germán Montenegro Miranda   +1 more
doaj   +1 more source

Expansión vertical de la ciudad: densidad urbana, ¿densidad humana?

Estudios: filosofía, historia, letras, 2018
El futuro de las ciudades plantea su densificacion y verticalizacion. Un incremento de la poblacion en menos superficie disminuye desplazamientos, el consumo de suelo y el gasto de energia, aunque a costa de la interaccion social y la salud mental. En el caso de la Ciudad de Mexico, favorecer la verticalidad exige una cuidadosa adecuacion al contexto ...
openaire   +1 more source

A global assessment of animal community responses to agricultural management

Conservation Biology, EarlyView.
Abstract Transitions in agricultural management through crop and noncrop diversification on intensively managed croplands or pastures have benefited biodiversity. However, the extent to which agricultural management benefits species communities present in undisturbed ecosystems remains largely unclear.
Susana López Rodríguez, Hanneke van ‘t Veen, Solen Le Clec'h, Rob Alkemade   +3 more
wiley   +1 more source

A densidade e a evolução do densímetro [PDF]

Revista Brasileira de Ensino de Física, 2013
Este trabalho passa em revista o conceito de densidade e descreve o densímetro, instrumento destinado a medir a densidade de líquidos puros ou soluções sem o auxílio de uma balança. A concepção do densímetro se baseia no princípio de Arquimedes (flutuabilidade). O emprego desse instrumento ganhou impulso a partir do século XVII.
Oliveira, Bruno de Moura, Melo Filho, João Massena, Afonso, Júlio Carlos   +2 more
openaire   +4 more sources

Identifying hotspots of faunal data deficiency to direct urgent research and monitoring

Conservation Biology, EarlyView.
Abstract Data deficiency is a substantial challenge for extinction risk assessments because incomplete data means we cannot accurately identify priority protected areas for conservation. Here, we use the International Union for Conservation of Nature (IUCN) distributions of amphibians, sharks and rays, fish, mammals, birds, and reptiles to identify ...
Matt W. Hayward, Danielle Verdon‐Kidd, K. Colyvas, Ellen Saxon, Andrea S. Griffin   +4 more
wiley   +1 more source

Protocolo estandarizado para el seguimiento poblacional del pavón, Oreophasis derbianus: propuesta de métodos de campo y analíticos

Huitzil, 2017
La estimación robusta del tamaño poblacional de especies de fauna silvestre es un requisito fundamental en estudios ecológicos y en el diseño e implementación de estrategias de conservación.
Fernando González-García, Miguel Angel Martínez-Morales, Alejandro Abundis Santamaría, Javier A. Rivas-Romero, Juan M. Quiñónez-Guzmán, James Rodríguez Acosta, José Luis Rangel-Salazar, Carlos Alberto Guichard Romero   +7 more
doaj   +1 more source

Subsistence hunting shapes the spatial variation of jaguar densities in community‐managed forests

Journal of Zoology, EarlyView.
Jaguars and people can coexist in community‐managed forests, but distance matters. In Guatemala's Maya Biosphere Reserve, jaguar numbers increased markedly in areas harder to reach on foot, yet jaguars were still found near communities, showing that responsibly managed forests can support jaguar populations while allowing people to maintain traditional
L. Perera‐Romero, R. McNab, R. Garcia‐Anleu, J. Polisar, C. Sutherland, D. Thornton   +5 more
wiley   +1 more source

Efecto de la intemperización y proceso en las características físicas, mecánicas y energéticas de briquetas

Revista Mexicana de Ciencias Forestales, 2018
Las industrias forestales generan residuos de aserrín que son subutilizados, frecuentemente estos se acumulan durante años, lo que puede propiciar incendios y contaminación.
Artemio Carrilo-Parra, Esteban Contreras Ortiz, Fortunato Garza Ocañas, Maginot Ngangyo Heya, José Guadalupe Rutiaga-Quiñones   +4 more
doaj   +1 more source

Peridomestic infestation by Triatoma pallidipennis and natural infection with Trypanosoma cruzi in Zacatepec, Morelos, Mexico Infestación peridoméstica por Triatoma pallidipennis e infección natural por Trypanosoma cruzi en Zacatepec, Morelos, México

Medical and Veterinary Entomology, EarlyView.
Entomological and community‐related risk factors for Chagas disease were assessed through peridomestic sampling, calculation of entomological indices and surveys of community knowledge, attitudes and practices. Forty‐six triatomines, all identified as Triatoma pallidipennis, were collected, and all specimens showed natural infection with Trypanosoma ...
Reyna Vargas‐Abasolo, José Rafael Delgado López, Liliana Aguilar‐Marcelino, Miguel Galarde‐López, Gemma Rojo, Alex Córdoba‐Aguilar   +5 more
wiley   +1 more source