Results 41 to 50 of about 1,409 (174)
Conservation Biology, EarlyView.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
Aspectos del polimorfismo genético en Drosophila pseudoobscura, D. willistoni y D. nebulosa
Acta Agronómica, 2008 En México el polimorfismo cromosómico en poblaciones naturales de Drosophila se estudió en D. pseudoobscura, D. willistoni y D. nebulosa. En la primera, más ampliamente analizada, se reconocen 27 inversiones correspondientes al 67.5% de la variabilidad ...
Víctor Manuel Salceda Sacanelles
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Detecting mass mortality events in wildlife populations
Conservation Biology, EarlyView.Abstract Reports in the literature of mass mortality events (MMEs) involving diverse animal taxa are increasing. Yet, many likely go unobserved due to imperfect detection and infrequent sampling. MMEs involving small, cryptic species, for instance, can be difficult to detect even during the event, and degradation and scavenging of carcasses can make ...
Jesse L. Brunner, Justin M. Calabrese
wiley +1 more source
Revista Chilena de Historia Natural, 2001 The fluctuations exhibited by natural populations have fascinated ecologists for the last eighty years. However, a vigorous debate between different schools of population ecologists has hampered reaching a consensus about the causes of such numerical ...
MAURICIO LIMA
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Acta Botanica Mexicana, 2018 Antecedentes y Objetivos: Cedrela odorata (cedro) es un árbol tropical nativo de América con un importante mercado internacional. En el presente estudio, se comparó la variación morfológica de C.
Dulce María Galván-Hernández +4 more
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Evolution of research on global amphibian declines
Conservation Biology, EarlyView.Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash +6 more
wiley +1 more source
Vulnerability of marine megafauna to global at‐sea anthropogenic threats
Conservation Biology, EarlyView.Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle +309 more
wiley +1 more source
Declining amphibian populations: a global phenomenon in conservation biology
Animal Biodiversity and Conservation, 2007 Disminución de las poblaciones de anfibios: un fenómeno global en biología de la conservación La mayoría de reducciones recientes en la biodiversidad de la Tierra puede atribuirse al impacto humano sobre el ambiente. Durante la última década, es cada vez
T. Gardner
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Conservation Biology, EarlyView.The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano +10 more
wiley +1 more source
Letras Verdes: Revista Latinoamericana de Estudios Socioambientales, 2013 El presente artículo pretende mostrar y evidenciar los puntos en común y los avances sobre conservación en cuatro países, todos andino-amazónicos, con alto grado de población indígena y con avances importantes sobre el tema, a través de las áreas ...
César Ipenza Peralta
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