Results 31 to 40 of about 45,188 (211)

Bioturbation by grizzly bears in relict solifluction features of Glacier National Park, Montana, USA

open access: yesRevista de Geomorfologie, 2022
Grizzly bears are an integral part of the northern Rocky Mountains ecosystem, where their foraging and denning leaves a measurable impact on the landscape.
Carol F Sawyer   +2 more
doaj   +1 more source

Rapid assessment of vessel noise events and quiet periods in Glacier Bay National Park and Preserve using a convolutional neural net

open access: yesEnvironmental Data Science, 2023
Patterns of underwater human-generated noise events and durations of noise-free intervals (NFIs) are soundscape metrics that can potentially affect animal communication and behavior. Due to the arduous task of manual analysis, these metrics have not been
Samara M. Haver   +2 more
doaj   +1 more source

Summer Residency of Pacific Halibut in Glacier Bay National Park [PDF]

open access: yes, 2014
Glacier Bay National Park (Fig.1), as a Marine Protected Area (MPA), is phasing out commercial fishing of Pacific halibut (Hippoglossus stenolepis) within the park.
Evans, Mark   +2 more
core  

Black bear density in Glacier National Park, Montana

open access: yesWildlife Society Bulletin, 2014
We report the first abundance and density estimates for American black bears (Ursus americanus) in Glacier National Park (NP), Montana, USA. We used data from 2 independent and concurrent noninvasive genetic sampling methods—hair traps and bear rubs ...
Jeff B. Stetz   +2 more
doaj   +1 more source

Light attenuation characteristics of glacially-fed lakes [PDF]

open access: yes, 2014
Transparency is a fundamental characteristic of aquatic ecosystems and is highly responsive to changes in climate and land use. The transparency of glacially-fed lakes may be a particularly sensitive sentinel characteristic of these changes.
Allan, Mathew Grant   +8 more
core   +2 more sources

Comparing the Underwater Soundscapes of Four U.S. National Parks and Marine Sanctuaries

open access: yesFrontiers in Marine Science, 2019
Passive acoustic sensors provide a cost-effective tool for monitoring marine environments. Documenting acoustic conditions among habitats can provide insights into temporal changes in ecosystem composition and anthropogenic impacts.
Samara M. Haver   +11 more
doaj   +1 more source

First ground penetrating radar survey on Monte Perdido glacier (Pyrenees) [PDF]

open access: yes, 2016
Producción CientíficaThe project “The Monte Perdido Glacier: Monitoring the glacial dynamic and the associated cryospheric processes as indicators of global change” (National Park´s 2013 Fund) aims to study the recent dynamic and degradation of this ice
Heras Barrueco, Andrés   +5 more
core   +1 more source

Reports and Maps of the Geological Survey Released Only in the Open Files, 1966 [PDF]

open access: yes, 1967
There is a reference to the Espey "Some effects on urbanization on storm runoff, Waller Creek".Waller Creek Working ...
Brett, George W.   +2 more
core   +1 more source

New Records of Leptothorax Wilsoni From Western North America

open access: yesPsyche: A Journal of Entomology, 1994
The parasitic ant Leptothorax wilsoni Heinze, 1989 was recorded from New Hampshire, Quebec, and New Brunswick. We report on colonies found in two sites in Jasper National Park, Alberta and in one site south of Glacier National Park, Montana.
A. Buschinger, R. D. Schumann
doaj   +1 more source

Host plant resistance promotes a secondary pest population

open access: yesEcosphere, 2020
Insecticides can cause secondary pest outbreaks that weaken the benefit of chemical pest control. These detrimental nontarget effects motivate the use of alternative pest management strategies such as host plant resistance and intercropping.
Cory S. Straub   +3 more
doaj   +1 more source

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