Results 11 to 20 of about 572,960 (261)

Wildfire immediately reduces nest and adult survival of greater sage-grouse

open access: yesScientific Reports, 2023
Wildfire events are becoming more frequent and severe on a global scale. Rising temperatures, prolonged drought, and the presence of pyrophytic invasive grasses are contributing to the degradation of native vegetation communities.
Emmy A. Tyrrell   +5 more
doaj   +1 more source

Characterizing and Locating Seismic Tremor during the 2022 Eruption of Mauna Loa Volcano, Hawai’i, with Network Covariance

open access: yesThe Seismic Record, 2023
The 2022 eruption of Mauna Loa Volcano, Hawai’i, was accompanied by continuous seismic tremor that began about 30 min before and ended several days after the eruption.
Sean P. Maher   +7 more
doaj   +1 more source

Age‐ and sex‐related dietary specialization facilitate seasonal resource partitioning in a migratory shorebird

open access: yesEcology and Evolution, 2021
Dietary specialization is common in animals and has important implications for individual fitness, inter‐ and intraspecific competition, and the adaptive potential of a species. Diet composition can be influenced by age‐ and sex‐related factors including
Laurie A. Hall   +4 more
doaj   +1 more source

Comparing Root Cohesion Estimates from Three Models at a Shallow Landslide in the Oregon Coast Range

open access: yesGeoHazards, 2022
Although accurate root cohesion model estimates are essential to quantify the effect of vegetation roots on shallow slope stability, few means exist to independently validate such model outputs.
Collin Cronkite-Ratcliff   +2 more
doaj   +1 more source

GPS tracking data reveals daily spatio-temporal movement patterns of waterfowl

open access: yesMovement Ecology, 2019
Background Spatio-temporal patterns of movement can characterize relationships between organisms and their surroundings, and address gaps in our understanding of species ecology, activity budgets, bioenergetics, and habitat resource management.
Fiona McDuie   +7 more
doaj   +1 more source

Nocturnal incubation recess and flushing behavior by duck hens

open access: yesEcology and Evolution, 2021
Incubating birds must balance the needs of their developing embryos with their own physiological needs, and many birds accomplish this by taking periodic breaks from incubation.
Rebecca Croston   +6 more
doaj   +1 more source

Annual Recurrences of Viral Hemorrhagic Septicemia Epizootics in Age 0 Pacific Herring Clupea pallasii Valenciennes, 1847

open access: yesAnimals, 2021
Throughout a 20 year biosurveillance period, viral hemorrhagic septicemia virus was isolated in low titers from only 6/7355 opportunistically sampled adult Pacific herring, reflecting the typical endemic phase of the disease when the virus persists ...
Paul K. Hershberger   +9 more
doaj   +1 more source

Distribution of Earthquakes on a Branching Fault System Using Integer Programming and Greedy‐Sequential Methods

open access: yesGeochemistry, Geophysics, Geosystems, 2020
A new global optimization method is used to determine the distribution of earthquakes on a complex, connected fault system. The method, integer programming, has been advanced in the field of operations research but has not been widely applied to ...
Eric L. Geist, Tom Parsons
doaj   +1 more source

Multi‐scale patterns in the occurrence of an ephemeral pool‐breeding amphibian

open access: yesEcosphere, 2022
Species distributions are governed by processes occurring at multiple spatial scales. For species with complex life cycles, the needs of all life stages must be met within the dispersal limitations of the species.
Brian J. Halstead   +4 more
doaj   +1 more source

Nonlinear Radiation Damping: A New Method for Dissipating Energy in Dynamic Earthquake Rupture Simulations

open access: yesThe Seismic Record, 2023
Dynamic earthquake rupture simulations are used to understand earthquake mechanics and the ground shaking that earthquakes produce. These simulations can help diagnose past earthquake behavior and are also used to generate scenarios of possible future ...
Michael Barall, Ruth A. Harris
doaj   +1 more source

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