Results 11 to 20 of about 1,203,677 (298)

Evidence that a Highway Reduces Apparent Survival Rates of Squirrel Gliders [PDF]

Ecology and Society, 2010
Roads and traffic are prominent components of most landscapes throughout the world, and their negative effects on the natural environment can extend for hundreds or thousands of meters beyond the road.
Sarah C. McCall, Michael A. McCarthy, Rodney van der Ree, Michael J. Harper, Silvana Cesarini, Kylie Soanes   +5 more
doaj   +2 more sources

Omentectomy for apparent early-stage uterine serous carcinoma: a large retrospective cohort study [PDF]

Frontiers in Oncology
ObjectivesThis study aims to compare the effects of different omental assessment methods (omentectomy and omental biopsy) on the long-term prognosis of apparent early-stage uterine serous cancer (USC).MethodsA total of 255 women with clinical early-stage
Ouling Zhang, Ouling Zhang, Yuedong He, Yuedong He, Ai Zheng, Ai Zheng, Yu Xu, Yu Xu   +7 more
doaj   +2 more sources

Reduced Adult Survival Estimated in Areas of Decline of Harbour Seal Populations in Scotland [PDF]

Ecology and Evolution
Understanding the demographic drivers behind observed changes in wild populations is key to inferring intrinsic and extrinsic causes behind such changes. In Scotland, harbour seal populations have undergone regional declines since the early 2000s.
M. Arso Civil, S. Tapp, J. Dickens, I. Langley, H. M. Hiley, M. Terrapon, E. Hague, R. C. Hewitt, L. S. Cordes, I. M. Graham, B. J. Cheney, P. M. Thompson, A. Hall, C. E. Sparling   +13 more
doaj   +2 more sources

Evaluating the Impact of Headstarting on the Critically Endangered Spoon-Billed Sandpiper Calidris pygmaea

Diversity, 2023
Headstarting is a conservation approach that suggests offering an advantage to a population by improving egg production, survival of embryos and/or juveniles.
Egor Y. Loktionov, Roland A. Digby, Nickolay N. Yakushev, Ivan A. Shepelev, Jodie P. Clements, Pavel S. Tomkovich, Nigel S. Jarrett, Nigel A. Clark, Rhys E. Green, Elena G. Lappo, Evgeny E. Syroechkovskiy   +10 more
doaj   +1 more source

Emigration effects on estimates of age‐ and sex‐specific survival of two sciurids

Ecology and Evolution, 2022
Age‐ and sex‐specific survival estimates are crucial to understanding important life history characteristics, and variation in these estimates can be a key driver of population dynamics.
Matthew J. Weldy, Damon B. Lesmeister, Clinton W. Epps   +2 more
doaj   +1 more source

Geographic and Temporal Variation in Annual Survival of a Declining Neotropical Migrant Hummingbird (Selasphorus rufus) Under Varying Fire, Snowpack, and Climatic Conditions

Frontiers in Ecology and Evolution, 2022
Rufous hummingbirds (Selasphorus rufus) have shown consistent declines in abundance since 1970, with an acceleration in this trend starting in the mid-2000s. Demographic data is needed to isolate possible drivers.
Anna Drake, Christine A. Bishop, Alison J. Moran, Scott Wilson, Scott Wilson   +4 more
doaj   +1 more source

A visual search asymmetry for novelty in the visual field based on sensory adaptation [PDF]

, 2020
The ability to detect sudden changes in the environment is important for survival. However, studies of “change blindness” have shown that image differences are hard to detect when a time delay or a mask is imposed between the different images.
Morgan, M. J., Solomon, J. A.
core   +1 more source

Killer whale (Orcinus orca) population dynamics in response to a period of rapid ecosystem change in the eastern North Atlantic

Ecology and Evolution, 2021
This study investigates survival and abundance of killer whales (Orcinus orca) in Norway in 1988–2019 using capture–recapture models of photo‐identification data.
Eve Jourdain, Tiffany Goh, Sanna Kuningas, Tiu Similä, Dag Vongraven, Richard Karoliussen, Anna Bisther, Philip S. Hammond   +7 more
doaj   +1 more source

Apparent survival estimation from continuous mark–recapture/resighting data [PDF]

Methods in Ecology and Evolution, 2013
Summary The recent expansion of continuous‐resighting telemetry methods (e.g. acoustic receivers, PIT tag antennae) has created a class of ecological data not well suited for traditional mark–recapture statistics. Estimating survival when continuous recapture data is available ensues a practical problem, because classical capture–recapture models ...
Andrew B. Barbour, José M. Ponciano, Kai Lorenzen   +2 more
openaire   +1 more source

Survival of Theileria parva in its nymphal tick vector Rhipicephalus appendiculatus under laboratory and quasi natural conditions [PDF]

, 2003
Groups of nymphal Rhipicephalus appendiculatus Muguga, having a mean of 1 or 9 Theileria parva Muguga-infected salivary gland acini per tick, were kept under quasi-natural conditions at an altitude of 1950 m or 20°C at a relative humidity of 85% in the ...
Medley, Graham, Ochanda, Horace, Young, A. S.   +2 more
core   +1 more source