Results 91 to 100 of about 83,284 (295)

A Catalog of Hydroclimatological Data for Alaska's Coastal Zone [PDF]

open access: yes, 1972
In order to perceive a better understanding of the interrelationships of the coastal zone water we proposed a research project which was to sort out many of the complex variables. The project was not begun due to the lack of sufficient funds.
Carlson, Robert F., Weller, Gunter
core  

Teaching financial crises: A leverage experiment

open access: yesSouthern Economic Journal, EarlyView.
Abstract College students often struggle to understand the prevalence of asset price bubbles and the difficulty of timing asset purchases and sales. Even economics students are consistently surprised when bubbles burst. These breaks can have real macroeconomic effects, particularly when the price surge is fueled by leverage.
Lee Coppock, Daniel Harper, Charles Holt
wiley   +1 more source

Identifying multidisciplinary research gaps across Arctic terrestrial gradients

open access: yesEnvironmental Research Letters, 2019
Global warming is driving environmental change in the Arctic. However, our current understanding of this change varies strongly among different environmental disciplines and is limited by the number and distribution of field sampling locations.
A-M Virkkala   +3 more
doaj   +1 more source

Determining Subarctic Peatland Vegetation Using an Unmanned Aerial System (UAS)

open access: yesRemote Sensing, 2018
Rising global temperatures tied to increases in greenhouse gas emissions are impacting high latitude regions, leading to changes in vegetation composition and feedbacks to climate through increased methane (CH4) emissions.
Michael Palace   +8 more
doaj   +1 more source

Uniform female-biased sex ratios in alpine willows [PDF]

open access: yes, 2012
Premise of the study: The development of biased sex ratios in dioecious plant species has been ascribed to either (1) factors influencing differential adult mortality of male and female plants or (2) factors acting at an early life stage that determine ...
Hik, David S., Myers-Smith, Isla H.
core   +1 more source

A comparison of thermal drones and camera trap population estimates for Sitka black‐tailed deer in Alaska

open access: yesWildlife Biology, EarlyView.
One of the most difficult challenges for wildlife managers is reliably estimating wildlife populations. Camera traps combined with spatial capture–recapture (SCR) models are a popular tool for population estimation. They have limitations, however, including long data processing times.
Shannon P. Finnegan   +5 more
wiley   +1 more source

InSAR Detection and Field Evidence for Thermokarst after a Tundra Wildfire, Using ALOS-PALSAR

open access: yesRemote Sensing, 2016
Thermokarst is the process of ground subsidence caused by either the thawing of ice-rich permafrost or the melting of massive ground ice. The consequences of permafrost degradation associated with thermokarst for surface ecology, landscape evolution, and
Go Iwahana   +7 more
doaj   +1 more source

Solar Radiation Transfer Through a Subarctic Shrub Canopy [PDF]

open access: yes, 2007
Much of the low Arctic is covered with shrubs that are partially buried by snow in winter and become exposed during melt. This study presents measurements and modeling of shortwave radiation reflection and extinction by a deciduous shrub canopy emerging ...
Bewley, D.   +2 more
core   +2 more sources

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

open access: yesWildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

Effects of changing permafrost and snow conditions on tundra wildlife: critical places and times

open access: yesArctic Science, 2017
The change of water phase around 0 °C has considerable impacts on wildlife ecology because liquid and solid water strongly differ in their insulating capability, mechanical resistance, and light reflectance.
Dominique Berteaux   +6 more
doaj   +1 more source

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