Results 81 to 90 of about 5,565 (193)

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

Accounting for animal movement during aerial imaging surveys

Remote Sensing in Ecology and Conservation, EarlyView.
Animals are not stationary during aerial surveys; if their movements are related to the movement of the aerial platform, then bias can be introduced into subsequent population count estimates. We sought to establish a framework for assessing the impacts of animal movement on count error and platform bias by comparing aggregated counts and relative ...
Rowan L. Converse, Christopher D. Lippitt, Steven E. Sesnie, David R. Stewart, Matthew J. Butler, Grant M. Harris   +5 more
wiley   +1 more source

Waterbirds in a changing world : effects of climate, habitat and conservation policy on European waterbirds [PDF]

, 2017
Climate change has become a major threat for biodiversity in recent decades. Waterbirds, in particular, are very responsive to climate change compared to other avian species and have already shown changes in phenology and distribution.
Pavón Jordán, Diego
core  

Hunting and fishing harvest data collection: a horizon scanning exercise from the French context

Wildlife Biology, EarlyView.
Legal and societal moves increasingly lead leisure hunting and fishing practitioners to record their harvest. The total number of individuals harvested per population per year is the minimum required information to feed into demographic models and allow science‐based management. Some few schemes record more detailed data, hence allowing better‐informed
Matthieu Guillemain, Léo Bacon, Aurélie Barboiron, Pierre Defos du Rau, Cyril Eraud, Aurélie Flesselle, Charlotte Francesiaz, Quentin Josset, Yoann Lechauve, Kevin Le Rest, Hervé Lormée, Maxime Passerault, Maryline Pellerin, Caroline Penil, Betty Plaquin, Adrien Tableau, Julien Terraube, Laurent Beaulaton   +17 more
wiley   +1 more source

Importance of surrounding landscape features in explaining wintering waterbird diversity and community assembly in Jiangsu's inland lake wetlands

Avian Research
As one of the important wintering areas along the East Asian–Australasian Flyway, wetlands in the Yangtze River floodplain face threats from land-use changes, yet its effects on wintering waterbirds at the landscape level remain understudied, impeding ...
Haoteng Zhang, Lijun Xiao, Zixi Zhao, Shenglai Yin, Yong Zhang   +4 more
doaj   +1 more source

Pesticide pollution: mitigating the negative impacts [PDF]

Water pollution, Pesticide residues, Irrigation canals, Salinity, Groundwater, Sri ...
Clemett, Alexandra
core  

Creating a safe operating space for wetlands in a changing climate [PDF]

, 2017
Many of the world’s wetlands may be profoundly affected by climate change over the coming decades. Although wetland managers may have little control over the causes of climate change, they can help to counteract its effects through local measures ...
Anza, Arnold, Collins, Contreras de Vera, Custodio, Davidson, Dudgeon, Espinar, Feller, Guardiola-Albert, Hughes, Junk, Kelly, Kosten, Kumar, López-Rodas, Melton, Mendez, Moss, Nieto, Olías, Pace, Palomo, Peeters, Posthuma, Rockström, Scheffer, Scheffer, Scheffer, Scheffer, Serrano, Serrano, Strayer, Sánchez-Montoya, Verberk   +34 more
core   +6 more sources

Habitat, diversity, and abundance of waterbirds in lantebung mangrove ecotourism area, Makassar city

IOP Conference Series: Earth and Environmental Science, 2020
Abstract Waterbirds are a significant part of mangrove forests due to their ecological role in the ecosystem. However, land conversion, human disturbance, pollution, and other anthropogenic factors are continued to give pressure to the existence of waterbirds, especially in the urban mangrove area.
A Purify, N Nurdin, R I Maulany, A Achmad, M Lanuru   +4 more
openaire   +1 more source

Population trends of dabbling ducks wintering in the alluvial valleys of Arkansas and Mississippi

Wildlife Biology, EarlyView.
Population abundances, distributions, and compositions across a diversity of taxa are changing, partly as a consequence of human‐induced global modifications. Although linking population fluctuations to anthropogenic‐induced alterations can be challenging, it is increasingly clear that long‐term monitoring is critical to understanding changing ...
Melanie R. Boudreau, Houston Havens, Brett Leach, Luke Naylor, James T. Callicutt, Aaron T. Pearse, J. Brian Davis   +6 more
wiley   +1 more source

Population of Waterbirds in Two Mangrove Types, Avicennia and Rhizophora in Iran [PDF]

, 2011
Relationship between mangroves and their associated marine life cannot be overemphasized. Mangrove habitats play host to a moderate number of waterbirds around the globe, but their relative roles of mangrove habitat structure in association with ...
Ghasemi, Saber
core