Results 51 to 60 of about 109,876 (305)

Habitat selection and reproduction of red-backed shrikes (Lanius collurio) in relation to abundance of potential avian nest predators [PDF]

open access: yes, 2010
Many studies of farmland bird species have related abundance of species to different habitat variables, whereas few studies have incorporated the effects of predation on habitat selection. However, it is generally assumed that prey species select habitat
Roos, Steffan
core  

Location of bumblebee nests is predicted by counts of nest-searching queens [PDF]

open access: yes, 2017
Bumblebee nests are difficult to find in sufficient numbers for well replicated studies. Counts of nest-searching queens in spring and early summer have been used as an indication of preferred nesting habitat, but this relationship has not yet been ...
DAVE GOULSON   +8 more
core   +1 more source

Prognostic Value of Neurofilament Light Chain and Glial Fibrillary Acidic Protein in ALD‐Related Myelopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak   +4 more
wiley   +1 more source

Preference of trees for nest building by critically endangered white‐rumped vultures (Gyps bengalensis) in Nepal

open access: yesEcology and Evolution
White‐rumped vultures (Gyps bengalensis) are critically endangered species, and protecting their habitats, particularly the nesting trees, may have a positive impact on their reproductive success.
Ramji Gautam   +2 more
doaj   +1 more source

Colony Structure of the Weaver Ant, Oecophylla smaragdina (Fabricius) (Hymenoptera: Formicidae)

open access: yesSociobiology, 2014
The colony structure of Oecophylla smaragdina within the compound of Universiti Sains Malaysia, Penang Island, Malaysia was determined. The current study involved a total of twelve nests which were taken from two different locations.
Marcela Pimid   +3 more
doaj   +1 more source

Nest and Unnest Operators in Nested Relations

open access: yesData Science Journal, 2008
By distinguishing nested attributes as Decomposable and Non-Decomposable, it is proved that for all nested relations, unnesting and then renesting on the same attribute yields the original relation subject only to the elimination of duplicate data. Therefore, the statement that was popular in nested relations research: "Unnesting and then nesting on ...
openaire   +3 more sources

Decoration increases the conspicuousness of raptor nests [Dataset] [PDF]

open access: yes, 2016
The dataset contains the results of the trials of nest detectability using 25 volunteers as "experimental conspecifics” to estimate the detectability of black kite nests to trespassers.
Mulero-Pázmány, Margarita   +17 more
core   +2 more sources

White Matter Hyperintensity Burden and Short‐Interval Change Associated With Sleep Apnoea in the UK Biobank

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng   +4 more
wiley   +1 more source

Behavior on flowers, structures associated to pollen transport and nesting biology of Perditomorpha brunerii and Cephalurgus anomalus (Hymenoptera: Colletidae, Andrenidae)

open access: yesRevista de Biología Tropical, 2000
Nesting and foraging behavior were studied in Cephalurgus anomalus and Perditomorpha brunerii, two oligolectic bee species on Malvaceae flowers, in the University of São Paulo campus, Ribeirão Preto, Brazil.
Maria Cristina Gaglianone
doaj  

Density dynamics, diet composition and productivity of sparrowhawk Accipiter nisus L. population in central Poland

open access: yesLeśne Prace Badawcze, 2018
Long-term monitoring of raptor populations can serve as a proxy for the evaluation of whole ecosystem health. The aim of the study was to compare the current abundance of the sparrowhawk Accipiter nisus L. with data from past decades.
Gryz Jakub, Krauze-Gryz Dagny
doaj   +1 more source

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