Results 61 to 70 of about 164,927 (246)

Big Bird: A global dataset of birds in drone imagery annotated to species level

Remote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson, Tatsuya Amano, Thomas Bregnballe, Alejandro Corregidor‐Castro, Roxane Francis, Diego Gallego‐García, Jarrod C. Hodgson, Landon R. Jones, César R. Luque‐Fernández, Dominik Marchowski, John McEvoy, Ann E. McKellar, W. Chris Oosthuizen, Christian Pfeifer, Martin Renner, José Hernán Sarasola, Mateo Sokač, Roberto Valle, Adam Zbyryt, Richard A. Fuller   +19 more
wiley   +1 more source

Unión Internacional para la Conservación de la Naturaleza (UICN) : Oficina Regional para México, América Central y el Caribe : Informe bienal 2021-2022

, 2023
El Informe bienal 2021-2022 ofrece una visión consolidada de las iniciativas de conservación implementadas en la región durante ese periodo. Entre los aspectos más destacados se encuentran los proyectos de conservación marina y costera, la gestión ...
Unión Internacional para la Conservación de la Naturaleza (UICN)
core  

Improving manual tagging of camera trap videos for wildlife studies: a visual assistance tool applied to the endangered huillin Lontra provocax

Wildlife Biology, EarlyView.
In the last decades, the use of camera traps for wildlife studies has increased significantly due to advancements in technology leading to cost reduction and improved reliability. They facilitate the study of wild animals in their natural environment in a minimally invasive manner, eliminating the need for researchers to remain in the field for long ...
Luciano Marpegan, Kenya Campos Haedo, Carla Pozzi and (cpozzi@apn.gob.ar)   +2 more
wiley   +1 more source

Ge-conservación Nº27

Ge-conservación
Ge-conservación es una publicación periódica del GEIIC, cuyo objetivo es contribuir al desarrollo científico, a la difusión y al intercambio de los conocimientos en materia de conservación y restauración del Patrimonio Cultural.
Ge-conservación Revista
doaj   +1 more source

New record of Frilled shark Chlamydoselachus anguineus Garman, 1884 (Chondrichthyes: Hexanchiformes) in the South Pacific Ocean [PDF]

PeerJ
Frilled sharks are rarely observed and limited information is available regarding their life history. The global number of records for these sharks does not exceed 40, with most sightings reported in the Western Pacific Ocean.
Maria J. Indurain, Angel Mancilla, Leandro Brizuela, Carolina Vargas-Caro, Carlos Bustamante   +4 more
doaj   +2 more sources

Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument La Ecología de Borrego Cimarron de las Montañas Rocosas Reintroducido en el Monumento Nacional de Dinosaurio

Wildlife Monographs, EarlyView.
We synthesized GPS telemetry, genetic, and pathogen data to evaluate metapopulation processes in a reintroduced Rocky Mountain bighorn sheep (Ovis canadensis canadensis) population in Dinosaur National Monument. We estimated subpopulation‐specific abundances and found 4 small subpopulations with high genetic diversity, partial connectivity, and ...
Sarah L. Carroll, Elizabeth P. Flesch, Salix R. Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William M. Janousek, Tabitha A. Graves   +8 more
wiley   +1 more source

Distribution, movements and group size of the bottlenose dolphin (Tursiops truncatus) to the south of San Quintín Bay, Baja California, Mexico

Ciencias Marinas, 2004
 Twelve boat-based photoidentification surveys were carried out along the coast to the south of San Quintín Bay, in Baja California, Mexico, from July 1999 to June 2000; effort was 276.76 km and 31.7 h at sea.
E Morteo, G Heckel, RH Defran, Y Schramm
doaj   +1 more source

Feathers and flu: identifying data gaps in avian influenza host dynamics to prioritize wildlife conservation Plumas y gripe: identificación de datos faltantes en la dinámica de hospedadores de la influenza aviar para priorizar la conservación de la vida silvestre

Wildlife Monographs, EarlyView.
We describe the host response continuum for highly pathogenic avian influenza viruses (HPAIV), including the continuum of host responses to HPAIV infection and exposure based on the primary axis of host competence, ability to infect other hosts, and host vulnerability.
Johanna A. Harvey, Matthew Gonnerman, Shenglai Yin, Cody M. Kent, Joshua Cullen, Jeffery D. Sullivan, Jonathan B. Dain, Nichola J. Hill, Diann J. Prosser, Jennifer M. Mullinax   +9 more
wiley   +1 more source

Documentando la restauración… pasado, presente y futuro [PDF]

Boletín del Museo Arqueológico Nacional, 2017
Se recorre la historia de la documentación relacionada con la restauración y la conservación en los museos y más concretamente en el Museo Arqueológico Nacional, insistiendo en la importancia que tiene para el conocimiento de los objetos custodiados por ...
Bárbara Culubret Worms, Carmen Dávila Buitrón, M.ª Antonia Moreno Cifuentes , Milagros Pérez García   +3 more
doaj  

Ducks across the pond ‐ challenges and opportunities for collaboration between North America and Europe

Wildlife Society Bulletin, EarlyView.
Abstract Many waterfowl species and closely related congeners are shared across the Holarctic, and are culturally and economically important in both North America and Europe. Accordingly, both continents have developed science and management frameworks in an attempt to establish evidence‐based conservation practices for this guild of birds.
Kevin M. Ringelman, Céline Arzel, Tom C. Cameron, Gunnar Gunnarsson, Aleksi Lehikoinen, Pär Söderquist, Iben Hove Sørensen, Matthieu Guillemain   +7 more
wiley   +1 more source