Results 11 to 20 of about 1,198,310 (289)
Beak morphology predicts apparent survival of crossbills: due to selective survival or selective dispersal? [PDF]
Journal of Avian Biology, 2019 Dozens of morphologically differentiated populations, subspecies and species of crossbills (genus Loxia ) exist. It has been suggested that this divergence is due to variation in the conifer cones that each population specialises upon, requiring a specific beak size to efficiently separate ...
David Gómez-Blanco +2 more
exaly +3 more sources
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 +5 more
doaj +2 more sources
Omentectomy for apparent early-stage uterine serous carcinoma: a large retrospective cohort study [PDF]
Frontiers in OncologyObjectivesThis 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 +7 more
doaj +2 more sources
Frontiers in Oncology, 2022 BackgroundDiffusion-weighted whole-body MRI (DW-MRI) is increasingly used to evaluate bone diseases of multiple myeloma (MM), but there is lack of quantitative indicator for DW-MRI to reflect the prognosis of MM.
Bei Zhang +5 more
doaj +3 more sources
Apparent survival, growth rate and dispersal in a declining European Roller population
Journal of Ornithology, 2019 Studying demographic parameters and how they may influence population growth is critical to the development of meaningful conservation actions for endangered species. The European Roller Coracias garrulus has experienced a drastic decline through its breeding distribution range, but very little is known about its demography (i.e. dispersal and survival)
Juan Rodriguez +2 more
exaly +3 more sources
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 +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 +2 more
doaj +1 more source
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 +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
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 +7 more
doaj +1 more source