Results 81 to 90 of about 1,861,335 (296)

Bald eagle population increase, reproductive success, and nesting habitat in central interior California

open access: yes
Over much of its range, the bald eagle (Haliaeetus leucocephalus) has substantially recovered from declines in the mid–late 1900s, which resulted from habitat loss, human persecution and disturbance, and contamination by the pesticide DDT.
Kathy Kayner   +6 more
core   +1 more source

Meadow birds on organic and conventional arable farms in the Netherlands: abundance and nest success [PDF]

open access: yes, 2010
Intensification of agriculture is mentioned to be the key drive behind the decline of farmland birds on grassland and on arable land. This raises the question whether a less intensive system, such as organic, can stop or reverse these declines.
Kragten, Steven
core  

Tricolored blackbird survey methods

open access: yesCalifornia Fish and Wildlife Journal
Surveys for the tricolored blackbird (Agelaius tricolor), a California-listed threatened species, are needed to provide essential information about its status and distribution to support conservation efforts.
Daniel Airola   +3 more
doaj   +1 more source

Olive ridley sea turtle hatching success as a function of the microbial abundance in nest sand at Ostional, Costa Rica.

open access: yesPLoS ONE, 2015
Several studies have suggested that significant embryo mortality is caused by microbes, while high microbial loads are generated by the decomposition of eggs broken by later nesting turtles.
Vanessa S Bézy   +2 more
doaj   +1 more source

Closing the Loop: High‐Precision 3D Photofabrication in Living Tissues

open access: yesAdvanced Science, EarlyView.
Writing 3D microstructures inside living tissue demands more than laser access; It demands information. Hierarchical sensing captures thermal and mechanical states across pulse‐train, voxel, and structure timescales, feeding a controller that steers the laser in real time.
Amirbahador Zeynali   +2 more
wiley   +1 more source

Effect of Feathers as Nest Insulation on Incubation Behavior and Reproductive Performance of Tree Swallows (\u3cem\u3eTachycineta bicolor\u3c/em\u3e) [PDF]

open access: yes, 1995
Many species of birds line their nests with feathers, presumably because of the insulative qualities of feathers and because feathers may act as a barrier between nest parasites and nestlings.
Faro, Christine A   +4 more
core  

Co‐activation of Selective Nicotinic Acetylcholine Receptor Subtypes Is Required for Neuroprotection against Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
ABSTRACT Beta‐amyloid peptide (Aβ)‐induced suppression of hippocampal GABAergic interneuron activity drives hyperexcitability, amyloid pathology, and cognitive impairment in Alzheimer's disease (AD), suggesting that enhancing hippocampal inhibition may be protective.
Rahmi Lee   +3 more
wiley   +1 more source

IMPACT OF NEST-SITE SELECTION ON NEST SUCCESS AND NEST TEMPERATURE IN NATURAL AND DISTURBED HABITATS

open access: yesEcology, 2002
Nest-site selection behavior is a maternal effect that contributes to offspring survival and variation in offspring phenotypes that are subject to natural selection. We investigated nest-site selection and its consequences in the snapping turtle, Chelydra ser- pentina, in northwestern Illinois.
Kolbe, Jason, Janzen, Fredric
openaire   +3 more sources

Influence of nesting habitat selection on Mallard (Anas platyrhynchos) nesting success

open access: yes, 2012
In the Marismas of the Guadalquivir (SW Spain), the nesting season of the Mallard extends from late January to late May. The relative importance of different nesting habitats changed throughout this period.
Amat, Juan A.
core   +1 more source

Nesting activity and reproductive output of green turtles in Similajau National Park, Bintulu, Sarawak

open access: yesFrontiers in Amphibian and Reptile Science
IntroductionGreen turtles (Chelonia mydas) are ecologically important marine megafauna, yet reproductive information from small and understudied nesting sites in Sarawak remains limited.
Anastasia Ting Jia Lei   +1 more
doaj   +1 more source

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