A Numerical Study of the Common Narrow-Leaved Taxa of Chenopodium Occurring in the Western United States

Brittonia ◽  
1974 ◽  
Vol 26 (4) ◽  
pp. 398 ◽  
Author(s):  
Daniel J. Crawford ◽  
James F. Reynolds
2021 ◽  
Vol 19 ◽  
pp. 12-17
Author(s):  
M. Brajkovic ◽  
T. Carter ◽  
C. Cook ◽  
A. Pourmovahed ◽  

Areas with dry climates have recently become more vulnerable to wildfires as the soil and air moisture have been changing because of greenhouse gasses in the atmosphere. Areas especially impacted are Australia, the Amazon, and western United States. The common factors at these locations are a dry environment and brush or forests fueling the fires once they start. As the climate continues to change, less moisture is present in the ground in these areas. This proliferates the susceptibility to wildfire. Prevention methods for inhibiting wildfires include reducing our carbon footprint, using care around campfires and other causes of wildfire, as well as routine thinning and removal of excess vegetation. The purpose of this study was to determine whether there is a link between Climate Change and the extraordinary magnitude, intensity, and frequency of recent wildfires. Although it is not possible to link all these wildfires directly and undeniably to Climate Change, the data examined clearly point to a strong possibility that such a link exists.


1998 ◽  
Vol 2 (1) ◽  
pp. 37-52 ◽  
Author(s):  
Fred W. Allendorf ◽  
Bruce A. Byers

AbstractThe rapid decline of salmon over the last hundred years in the western United States has occurred to a large extent because of the way people have viewed salmon. In this paper, we briefly examine several views of salmon and offer another view, one based on enduring themes of Buddhist thought and practice. We examine the understanding of the interdependence and unity of all things as the common foundation of both Buddhism and ecology. Finally, we provide guidelines for applying this understanding to the conservation of salmon, as well the relationship of humans to 'nature' in general.


2015 ◽  
Vol 6 (1) ◽  
pp. 187-190 ◽  
Author(s):  
Kristy B. Howe ◽  
Peter S. Coates

AbstractPrevious investigations using continuous video monitoring of greater sage-grouse Centrocercus urophasianus nests have unambiguously identified common ravens Corvus corax as an important egg predator within the western United States. The quantity of greater sage-grouse eggs an individual common raven consumes during the nesting period and the extent to which common ravens actively hunt greater sage-grouse nests are largely unknown. However, some evidence suggests that territorial breeding common ravens, rather than nonbreeding transients, are most likely responsible for nest depredations. We describe greater sage-grouse egg depredation observations obtained opportunistically from three common raven nests located in Idaho and Nevada where depredated greater sage-grouse eggs were found at or in the immediate vicinity of the nest site, including the caching of eggs in nearby rock crevices. We opportunistically monitored these nests by counting and removing depredated eggs and shell fragments from the nest sites during each visit to determine the extent to which the common raven pairs preyed on greater sage-grouse eggs. To our knowledge, our observations represent the first evidence that breeding, territorial pairs of common ravens cache greater sage-grouse eggs and are capable of depredating multiple greater sage-grouse nests.


1956 ◽  
Vol 88 (3) ◽  
pp. 101-109 ◽  
Author(s):  
D. D. Jensen

This paper presents descriptions of four new species of the genus Psylla, brief notes on their biology and records the encyrtid Prionomitus mitratus (Dalm.) as a parasite of Psylla ribesiae (Crawford). Of particular interest is the fact that two of the four new species occur on Ribes spp. and previously were not distinguished from the common species, ribesiae, which has been known in western United States since 1911.


2013 ◽  
Vol 118 (17) ◽  
pp. 9819-9833 ◽  
Author(s):  
Daniel Rosenfeld ◽  
Rei Chemke ◽  
Paul DeMott ◽  
Ryan C. Sullivan ◽  
Roy Rasmussen ◽  
...  

2011 ◽  
Vol 101 (1) ◽  
pp. 36-48 ◽  
Author(s):  
Katharine Coman

The lead article in the inaugural issue of the AER examines the common property resource problem as applied to water in the Western United States.


1987 ◽  
Vol 14 (1) ◽  
pp. 85-88
Author(s):  
CHARLOTTE M PORTER

A curious error affects the names of three North American clupeids—the Alewife, American Shad, and Menhaden. The Alewife was first described by the British-born American architect, Benjamin Henry Latrobe in 1799, just two years after what is generally acknowledged as the earliest description of any ichthyological species published in the United States. Latrobe also described the ‘fish louse’, the common isopod parasite of the Alewife, with the new name, Oniscus praegustator. Expressing an enthusiasm for American independence typical of his generation, Latrobe humorously proposed the name Clupea tyrannus for the Alewife because the fish, like all tyrants, had parasites or hangers-on.


Author(s):  
Jennifer J. Smith

Coherence of place often exists alongside irregularities in time in cycles, and chapter three turns to cycles linked by temporal markers. Ray Bradbury’s The Martian Chronicles (1950) follows a linear chronology and describes the exploration, conquest, and repopulation of Mars by humans. Conversely, Louise Erdrich’s Love Medicine (1984) jumps back and forth across time to narrate the lives of interconnected families in the western United States. Bradbury’s cycle invokes a confluence of historical forces—time as value-laden, work as a calling, and travel as necessitating standardized time—and contextualizes them in relation to anxieties about the space race. Erdrich’s cycle invokes broader, oppositional conceptions of time—as recursive and arbitrary and as causal and meaningful—to depict time as implicated in an entire system of measurement that made possible the destruction and exploitation of the Chippewa people. Both volumes understand the United States to be preoccupied with imperialist impulses. Even as they critique such projects, they also point to the tenacity with which individuals encounter these systems, and they do so by creating “interstitial temporalities,” which allow them to navigate time at the crossroads of language and culture.


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