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Sarcopterygian and other Fishes from the Marine Upper Devonian of Colorado, U.S.A. [PDF]

open access: yesFossil Record, 1998
The fish fauna of Upper Devonian deposits of SW Colorado is described and compared with those of Central Colorado. The osteolepidid Litoptychus is redescribed including skull roof, cheek, palatoquadrate, cleithrum and postcranial elements.
H.-P. Schultze, J. Chorn
doaj   +5 more sources

Visitor Perceptions of Bark Beetle Impacted Forests in Rocky Mountain National Park, Colorado

open access: yesConservation & Society, 2020
Forest disturbance by bark beetles and other insects is a global issue expected to increase with the warming climate. Visitor aesthetic appreciation of these forests affected by infestations is an important factor for land managers.
Christa Cooper Sumner   +1 more
doaj   +1 more source

Impact of water stress on the demographic traits and population projection of Colorado potato beetle

open access: yesFrontiers in Physiology, 2023
Introduction: The Colorado potato beetle is one of the famous quarantine pests in China which is extremely destructive to Solanaceae crops and causes serious losses to the potato industry.Methods: In this experiment, the host plant potato was subjected ...
Xia Liu   +5 more
doaj   +1 more source

Opting Out of Standardized Tests at the Secondary Level—A Geographic Analysis of Colorado

open access: yesAERA Open, 2023
Although much of the national opt-out movement is parent driven, the Colorado opt-out movement involved considerable efforts from high school students. This study explores the geography of the Colorado opt-out movement among secondary students, drawing ...
Lydia Ross   +3 more
doaj   +1 more source

Production Externalities and the Gains from Management in a Spatially-Explicit Aquifer

open access: yesJournal of Agricultural and Resource Economics, 2019
Groundwater is a valuable input to agricultural production in many areas, but its use imposes external costs on nearby producers. Little attention has been given to externalities that directly affect groundwater productivity.
Dale T. Manning, Jordan F. Suter
doaj   +1 more source

Using Resident-Based Hazing Programs to Reduce Human-Coyote Conflicts in Urban Environments

open access: yesHuman-Wildlife Interactions, 2017
The concept of hazing (aversive conditioning) is often promoted as a tool for reducing human-coyote (Canis latrans) conflicts in urban environments.
Mary Ann Bonnell, Stewart W. Breck
doaj   +1 more source

Survival and productivity of a low-density black bear population in Rocky Mountain National Park, Colorado

open access: yesHuman-Wildlife Interactions, 2017
Historically, Rocky Mountain National Park (RMNP) has supported a small black bear (Ursus americanus) population of low productivity. Increased visitor use of the park and development around its periphery could lead to a reduction in population viability
Roger A. Baldwin, Louis C. Bender
doaj   +1 more source

Duration of Low Temperature Exposure Affects Egg Hatching of the Colorado Potato Beetle and Emergence of Overwintering Adults

open access: yesInsects, 2021
The Colorado potato beetle is a serious pest of Solanaceae in China. In early summer, cold spells in later spring may occur for brief periods in the field environmental conditions, and temperatures often deviate far below the normal temperature for short
Jianghua Liao   +3 more
doaj   +1 more source

Deglaciation of the Colorado Rocky Mountains following the Last Glacial Maximum

open access: yesCuadernos de Investigación Geográfica, 2017
The availability of almost 180 cosmogenic-radionuclide (CRN) surface-exposure ages from moraine boulders and glacially polished bedrock surfaces makes possible an assessment of the timing and character of the local Last Glacial Maximum (LLGM) and ...
E.M. Leonard   +5 more
doaj   +1 more source

Climate during the Last Glacial Maximum in the Northern Sawatch Range, Colorado, USA

open access: yesQuaternary, 2019
Temperature-index modeling is used to determine the magnitude of temperature depression in the northern Sawatch Range required to maintain steady-state mass balances of six reconstructed glaciers at their extent during the local Last Glacial Maximum ...
Keith A. Brugger   +3 more
doaj   +1 more source

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