Results 21 to 30 of about 181,408 (304)
Ecosphere, 2022 Informing conservation and management decisions for habitats frequented by species of high management interest often face the challenge of limited resources for conducting wildlife surveys.
Cody E. Deane +4 more
doaj +1 more source
Repurposing open‐source data from weather radars to reduce the costs of aerial waterbird surveys
Ecological Solutions and Evidence, 2022 Aerial counts are the primary means of monitoring waterbird populations. A valid population assessment requires a significant proportion of the population to be surveyed.
Rebecca M. Rogers +3 more
doaj +1 more source
Comparison of aerial surveys and pellet‐based distance sampling methods for estimating deer density
Wildlife Society Bulletin, 2012 Wildlife biologists require density estimates for white‐tailed deer (Odocoileus virginianus) to facilitate management. Aerial surveys are often used to obtain density estimates, but are subject to problems necessitating the consideration of novel ...
Rachael E. Urbanek +3 more
doaj +1 more source
Nature Conservation Research: Заповедная наука, 2018 The Gydan Peninsula is one of the least explored and inaccessible Arctic regions in both the Yamalo-Nenetsky Autonomous Okrug and Russia as a whole. In 2016–2017 we conducted a survey of the Gydansky State Nature Reserve and adjacent areas, counted and ...
Sofia B. Rozenfeld +6 more
doaj +1 more source
Unmanned Aerial Survey of Elephants
PLoS ONE, 2013 The use of a UAS (Unmanned Aircraft System) was tested to survey large mammals in the Nazinga Game Ranch in the south of Burkina Faso. The Gatewing ×100™ equipped with a Ricoh GR III camera was used to test animal reaction as the UAS passed, and visibility on the images. No reaction was recorded as the UAS passed at a height of 100 m.
Vermeulen, Cédric +4 more
openaire +5 more sources
Spatial ecology of long‐tailed ducks and white‐winged scoters wintering on Nantucket Shoals
Ecosphere, 2020 We examine the long‐term co‐occurrence of long‐tailed ducks (Clangula hyemalis) and white‐winged scoters (Melanitta fusca) wintering at the Nantucket Shoals off Massachusetts, USA, and ask: (1) What oceanographic features attract these aggregations?
Timothy P. White, Richard R. Veit
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Koedoe: African Protected Area Conservation and Science, 1990 Objectives, techniques and problems of monitoring ungulate population structure and trends using standardised ground surveys as an adjunct to aerial counts are described and discussed in the light of experience gained over the past seven years.
D.R. Mason
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2002 Aerial Surveys of Grey Seals in the Northeastern United States
NAMMCO Scientific Publications, 2007 In the past 20 years, grey seals have become established in coastal waters of the Northeastern United States. There are 3 sites where pupping and breeding occurs in January and February, 2 in Maine and 1 in Massachusetts. In 2002 we recorded a minimum of
Stephanie A Wood +2 more
doaj +1 more source
Estimating moose population parameters from aerial surveys [PDF]
, 1986 Successful moose management depends on knowledge of population dynamics. The principal parameters required are size, rate of change, recruitment, sex composition, and mortality.
DuBois, Stephen D. +3 more
core
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim +8 more
wiley +1 more source