scholarly journals Long‐term effects of energy development on winter distribution and residency of pronghorn in the Greater Yellowstone Ecosystem

2019 ◽  
Vol 1 (9) ◽  
Author(s):  
Hall Sawyer ◽  
Jon P. Beckmann ◽  
Renee G. Seidler ◽  
Joel Berger
Keyword(s):  
Energy Development ◽  
Greater Yellowstone Ecosystem ◽  
Long Term Effects ◽  
Winter Distribution ◽  
Greater Yellowstone

scholarly journals Long-Term Post-Disturbance Forest Recovery in the Greater Yellowstone Ecosystem Analyzed Using Landsat Time Series Stack

2016 ◽  
Vol 8 (11) ◽  
pp. 898 ◽  
Author(s):  
Feng Zhao ◽  
Ran Meng ◽  
Chengquan Huang ◽  
Maosheng Zhao ◽  
Feng Zhao ◽  
...  
Keyword(s):  
Time Series ◽  
Forest Recovery ◽  
Greater Yellowstone Ecosystem ◽  
Greater Yellowstone

scholarly journals COVID-19 and Sustainable Energy Development: Agendas for Future Research

2020 ◽  
Vol 4 ◽  
pp. 20-25
Author(s):  
Kevin Lo
Keyword(s):  
Sustainable Energy ◽  
Energy Development ◽  
Future Research ◽  
Long Term Effects ◽  
The Sustainable Development ◽  
Short And Long Term ◽  
Development Agendas ◽  
The Impact ◽  
Key Questions

The COVID-19 pandemic is having a massive impact on and may fundamentally change the pathways and trajectories of sustainable energy development. This article examines the impact of COVID-19 on Asia’s sustainable energy development and proposes agendas for future energy research in response to the pandemic. The review and research agendas are oriented towards achieving the Sustainable Development Goal 7 (SDG 7), ensuring access to affordable, reliable, sustainable and modern energy for all. The following three key questions need to be addressed by researchers: (1) In what ways does COVID-19 make sustainable energy development more important than ever? (2) What are the short- and long-term effects of COVID-19 on sustainable energy development? (3) How can responses to COVID-19 meet the objectives of sustainable energy development?

scholarly journals Ten-Years Later: Long-Term Analyses of the Abundance and Biomass of the Non-Native New Zealand Mud Snail and Native Invertebrate Communities in the Greater Yellowstone Area

2011 ◽  
Vol 34 ◽  
pp. 147-150
Author(s):  
Teresa Tibbets
Keyword(s):  
Invasive Species ◽  
New Zealand ◽  
National Park ◽  
Macroinvertebrate Community ◽  
Long Term Effects ◽  
Mud Snail ◽  
Greater Yellowstone Area ◽  
Greater Yellowstone ◽  
New Zealand Mud Snail

Invasive species are one of the top two threats to native biodiversity worldwide (Mack et al. 2000). A primary goal of invasion biology is to predict which introduced species become invasive, or reach pest status, and which systems are susceptible to invasion (Heger and Trepl 2003). In order to complete this goal, it is vital to understand long-term dynamics of invasive species populations and their interactions with native communities in their introduced range. Most studies of invasions by non-native species are not extensive enough to determine long-term effects on the native systems (Strayer 2010). The first objective of this study is to determine the long-term abundance and biomass of the New Zealand mud snail, (Potamopyrgus antipodarum), in the Greater Yellowstone Area (GYA). The second objective is to analyze the long-term effects of P. antipodarum on the biomass, abundance, and taxon diversity of native benthic invertebrate assemblages in the GYA. The ten-year span of data available for P. antipodarum and the native macroinvertebrate communities at Lower Polecat Creek in Grand Teton National Park and the Gibbon and Firehole Rivers in Yellowstone National Park provide a unique opportunity to study the macroinvertebrate community succession over time. Data from the proposed macroinvertebrate community survey in the summer of 2011 will be compiled with previous surveys from 2001-2009 to evaluate the long-term changes in the macroinvertebrate community at Polecat Creek and the Gibbon and Firehole Rivers.

scholarly journals Spatial and Temporal Patterns in Post-Fire Nitrogen Dynamics of Lodgepole Pine Forests in the Greater Yellowstone Ecosystem

2001 ◽  
Vol 25 ◽  
pp. 149-150
Author(s):  
Monica Turner ◽  
William Romme ◽  
Daniel Tinker
Keyword(s):  
National Parks ◽  
Ecosystem Processes ◽  
Landscape Patterns ◽  
Spatial And Temporal Variation ◽  
Limiting Factor ◽  
Greater Yellowstone Ecosystem ◽  
Spatial And Temporal Patterns ◽  
Research Attention ◽  
Greater Yellowstone

Our study addresses the effects of fire­generated landscape patterns, or variability in structure and composition of successional forest communities, on ecosystem processes such as biogeochemical cycling and productivity. Forest fire is a well-studied disturbance, yet little is known about the long-term implications of a fire-generated landscape mosaic for ecosystem processes. In particular, the dynamics of nitrogen turnover, availability, and sequestration following stand­replacing fire in conifer forests, has received surprisingly little research attention, even though nitrogen is thought to be a limiting factor in most coniferous forests (Smithwick et al. in press). Our current work in Grand Teton and Yellowstone National Parks builds on our previous and continuing long-term studies of the causes and consequences of fire in the Greater Yellowstone Ecosystem (Turner et al. 2003). The fires of 2000 provided new opportunities for studying spatial and temporal variation in ecosystem processes soon after severe disturbances and how these patterns develop and change through time.

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

Ultrastructural investigations of MDL 19,660-induced effects on the canine platelet and megakaryocyte

1990 ◽  
Vol 48 (3) ◽  
pp. 374-375
Author(s):  
D.E. Loudy ◽  
J. Sprinkle-Cavallo ◽  
J.T. Yarrington ◽  
F.Y. Thompson ◽  
J.P. Gibson
Keyword(s):  
Antidepressant Drug ◽  
Beagle Dogs ◽  
Long Term Effects ◽  
Short Term ◽  
Platelet Counts ◽  
Toxicological Studies ◽  
Induced Aggregation ◽  
Internal Architecture

Previous short term toxicological studies of one to two weeks duration have demonstrated that MDL 19,660 (5-(4-chlorophenyl)-2,4-dihydro-2,4-dimethyl-3Hl, 2,4-triazole-3-thione), an antidepressant drug, causes a dose-related thrombocytopenia in dogs. Platelet counts started to decline after two days of dosing with 30 mg/kg/day and continued to decrease to their lowest levels by 5-7 days. The loss in platelets was primarily of the small discoid subpopulation. In vitro studies have also indicated that MDL 19,660: does not spontaneously aggregate canine platelets and has moderate antiaggregating properties by inhibiting ADP-induced aggregation. The objectives of the present investigation of MDL 19,660 were to evaluate ultrastructurally long term effects on platelet internal architecture and changes in subpopulations of platelets and megakaryocytes.Nine male and nine female beagle dogs were divided equally into three groups and were administered orally 0, 15, or 30 mg/kg/day of MDL 19,660 for three months. Compared to a control platelet range of 353,000- 452,000/μl, a doserelated thrombocytopenia reached a maximum severity of an average of 135,000/μl for the 15 mg/kg/day dogs after two weeks and 81,000/μl for the 30 mg/kg/day dogs after one week.

Long-Term Effects of Head Lice Tx Unknown

2012 ◽  
Vol 43 (3) ◽  
pp. 42
Author(s):  
MITCHEL L. ZOLER
Keyword(s):  
Head Lice ◽  
Long Term Effects

The response of skin perfusion and of rheological and immunological variables to intravenous prostanoid administration in Raynaud’s phenomenon secondary to collagenosis

VASA ◽  
2005 ◽  
Vol 34 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Drinda ◽  
Neumann ◽  
Pöhlmann ◽  
Vogelsang ◽  
Stein ◽  
...  
Keyword(s):  
Laser Doppler Flowmetry ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Plasma Viscosity ◽  
Laser Doppler ◽  
Erythrocyte Aggregation ◽  
Control Group ◽  
Long Term Effects ◽  
Doppler Flowmetry

Background: Prostanoids are used in the treatment of Raynaud’s phenomenon and acral perfusion disorders secondary to collagenosis. In subjective terms, intravenous administration of these agents produces success in more than 50% of patients. The therapeutic outcome of clinical administration of alprostadil or iloprost may vary from individual to individual. Patients and methods: The following variables were analysed in a cross-over study in 27 patients with collagenosis and Raynaud’s phenomenon: plasma viscosity and erythrocyte aggregation (rheological variables), partial pressure of oxygen and laser Doppler flowmetry in the finger region, and lymphocyte phenotyping and interleukin (IL) determinations (immunological variables). Results: Laser Doppler flowmetry revealed significant differences between patients with secondary Raynaud’s phenomenon and a control group of 25 healthy subjects. Laser Doppler readings did not change significantly as a result of the treatments. Therapy with iloprost produced a reduction in IL-1beta, L-selectin (CD 62 L) and IL-6. Conclusion: The change in immunological variables due to iloprost may explain the long-term effects of prostaglandins in the treatment of Raynaud’s phenomenon. From our results it is not possible to infer any preference for iloprost or alprostadil.

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