scholarly journals The common occurrence of highly supercooled drizzle and rain near the coastal regions of the western United States

2013 ◽  
Vol 118 (17) ◽  
pp. 9819-9833 ◽  
Author(s):  
Daniel Rosenfeld ◽  
Rei Chemke ◽  
Paul DeMott ◽  
Ryan C. Sullivan ◽  
Roy Rasmussen ◽  
...  
1962 ◽  
Vol 40 (3) ◽  
pp. 491-510 ◽  
Author(s):  
J. A. Parmelee

Large stands of Euphorbia cyparissias L. in Ontario supporting aecia of Uromyces striatus Schroet. presented an opportunity for the author to study this stage of the rust hitherto little known in North America since its discovery here in 1947. The mycelium was found to be systemic and perennial and the aeciospores capable of infecting many species of Medicago and some yellow-flowered species of Trifolium. Pisum sativum was just slightly susceptible. Both diploid and tetraploid nuclear conditions of E. cyparissias have been found rusted and E. esula, long suspected as a host in Europe, has also been found rusted and the connection to Leguminosae shown by inoculation. Specimens resulting from inoculations (109) and from field collections from Canada (33), United States (18), and Europe (13) were identical in spore morphology. This, plus susceptibility of Leguminosae from Europe to the inoculum from Ontario, supports the suggestion that the rust was introduced to North America from Europe. It is further suggested that U. striatus was introduced on either or both alternate hosts independently. The common occurrence of telia is recorded and the fungus is redescribed.


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.


1994 ◽  
Vol 68 (1) ◽  
pp. 172-173 ◽  
Author(s):  
Standley E. Lewis

Several authors (Berry, 1916, 1931; Brooks, 1955; Cockerell, 1908, 1910) have reported evidence of damage by leaf-cutter bees (Hymenoptera: Megachilidae) from the Tertiary of the United States. These have been predominantly Eocene in age. During field investigations (1990-1991), four further fossil plant specimens with possible leaf-cutter bee damage were discovered from the middle Eocene sediments of the Klondike Mountain Formation near Republic (Ferry County), Washington (Figure 1), and are reported here to draw attention to the common occurrence of these kinds of insect “trace fossils” in the paleobotanical record.


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.


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.


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