A NEW CALIFORNIA EUPHYDRYAS (LEPID., RHOPALOCERA)

1929 ◽  
Vol 61 (2) ◽  
pp. 44-45
Author(s):  
J. D. Gunder
Keyword(s):  
New Mexico ◽  
Sierra Nevada ◽  
Great Basin ◽  
Rocky Mountains ◽  
National Park ◽  
Western Montana ◽  
Sequoia National Park ◽  
Parental Stock ◽  
Sierra Nevada Mountains

The chain of Rocky Mountains extending south from Canada through western Montana. Wyoming, Colorado and into northern New Mexico produce a series of butterflies which are at prespnt referable under an anicia-brucei classification. Various races from this supposed parental stock are found in southwestern Colorado, Utah, the Great Basin of Nevada and elsewhere with members of the clan branching down into New Mexico. For several years I have been hoping to find representatives of this group reaching over into the Sierra Nevada Mountains of California. In 1927 when on Alta Peak in Sequoia National Park, I took two males and in 1928 Mr. Walter Ireland captured four females in the same locality which I find to be closely related to the above mentioned breed.

scholarly journals On the effect of upwind emission controls on ozone in Sequoia National Park

2017 ◽  
Author(s):  
Claire E. Buysse ◽  
Jessica A. Munyan ◽  
Clara A. Bailey ◽  
Alexander Kotsakis ◽  
Jessica A. Sagona ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Regulatory Focus ◽  
National Park ◽  
Western Slope ◽  
Sequoia National Park ◽  
Time Period ◽  
Sierra Nevada Mountains ◽  
Emission Controls ◽  
The U.S ◽  
Do So

Abstract. Sequoia National Park (SNP) experiences the worst ozone (O3) pollution of any national park in the U.S. SNP is located on the western slope of the Sierra Nevada Mountains, downwind of the San Joaquin Valley (SJV), which is home to numerous cities ranked among the most O3-polluted in the U.S. Here, we investigate the influence of emission controls in the directly upwind SJV city of Visalia on O3 concentrations in SNP over a 12-yr time period (2001–2012). We show that export of nitrogen oxides (NOx) from the SJV plays a larger role in driving high O3 in SNP than does transport of O3. As a result, O3 in SNP has been more responsive to NOx emission reductions as a function of increasing downwind distance from the SJV. We report O3 trends by various concentration metrics, but do so separately for when environmental conditions are conducive to plant O3 uptake and for when high O3 is most common, which are time periods that occur at different times of day and year. We find that precursor emission controls have been less effective at reducing O3 concentrations in SNP in springtime, which is when plant O3 uptake in Sierra Nevada forests has been previously measured to be greatest. We discuss the implications of regulatory focus on high O3 days in SJV cities on O3 concentration trends and impacts in SNP.

scholarly journals On the effect of upwind emission controls on ozone in Sequoia National Park

2018 ◽  
Vol 18 (23) ◽  
pp. 17061-17076 ◽  
Author(s):  
Claire E. Buysse ◽  
Jessica A. Munyan ◽  
Clara A. Bailey ◽  
Alexander Kotsakis ◽  
Jessica A. Sagona ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Regulatory Focus ◽  
National Park ◽  
Western Slope ◽  
Ecosystem Impacts ◽  
Sequoia National Park ◽  
Time Period ◽  
Sierra Nevada Mountains ◽  
The Us ◽  
Emission Controls

Abstract. Ozone (O3) air pollution in Sequoia National Park (SNP) is among the worst of any national park in the US. SNP is located on the western slope of the Sierra Nevada Mountains downwind of the San Joaquin Valley (SJV), which is home to numerous cities ranked in the top 10 most O3-polluted in the US. Here, we investigate the influence of emission controls in the SJV on O3 concentrations in SNP over a 12-year time period (2001–2012). We show that the export of nitrogen oxides (NOx) from the SJV has played a larger role in driving high O3 in SNP than transport of O3. As a result, O3 in SNP has been more responsive to NOx emission reductions than in the upwind SJV city of Visalia, and O3 concentrations have declined faster at a higher-elevation monitoring station in SNP than at a low-elevation site nearer to the SJV. We report O3 trends by various concentration metrics but do so separately for when environmental conditions are conducive to plant O3 uptake and for when high O3 is most common, which are time periods that occur at different times of day and year. We find that precursor emission controls have been less effective at reducing O3 concentrations in SNP in springtime, which is when plant O3 uptake in Sierra Nevada forests has been previously measured to be greatest. We discuss the implications of regulatory focus on high O3 days in SJV cities for O3 concentration trends and ecosystem impacts in SNP.

The Intermontane Western Tradition

1962 ◽  
Vol 28 (2) ◽  
pp. 144-150 ◽  
Author(s):  
Richard D. Daugherty
Keyword(s):  
Conceptual Framework ◽  
Sierra Nevada ◽  
Great Basin ◽  
Rocky Mountains ◽  
Environmental Changes ◽  
Glacial Period ◽  
Western Tradition ◽  
The West ◽  
Northern Mexico ◽  
The North

AbstractThe hypothesis of an Intermontane Western tradition is advanced as a conceptual framework within which it is possible to achieve a greater understanding of the cultural histories of the Plateau, Great Basin, and Southwest culture areas, including broad and specific relationships and also the developing differences.Geographically, the Intermontane Western tradition extended throughout the intermontane region between the Cascade-Sierra Nevada ranges on the west, and the Rocky Mountains on the east, and from southern British Columbia on the north to northern Mexico on the south. Temporally, the Intermontane Western tradition existed throughout the post-glacial period.Within the major tradition, the Southwest Agricultural, Desert, and Northwest Riverine Areal traditions are seen developing, partly in response to environmental changes.

scholarly journals Devils playground, Box Elder County

Geosites ◽  
2019 ◽  
Vol 1 ◽  
pp. 1-7
Author(s):  
Carl Ege
Keyword(s):  
Sierra Nevada ◽  
Great Basin ◽  
Granitic Rock ◽  
Granitic Rocks ◽  
Private Land ◽  
Bureau Of Land Management ◽  
Box Elder ◽  
Sierra Nevada Mountains ◽  
Utah Juniper ◽  
Favorable Conditions

Why take your kids to the neighborhood playground, when you can visit a playground that inspires their sense of geologic adventure? Devils Playground is not your ordinary community playground, but a wonderland of granitic rock weathered into fantastic forms and weird shapes. Occupying an assortment of Bureau of Land Management, state, and private land in the Bovine Mountains, Devils Playground is a relatively unknown geologic curiosity found in a remote corner of northwestern Utah. Devils Playground is situated in the physiographic region known as the Great Basin province that extends across western Utah, Nevada, and to the Sierra Nevada Mountains in eastern California. The area is composed mostly of granitic rocks of the Emigrant Pass intrusion. A combination of granitic rock, faulting, and weathering under a semiarid climate created favorable conditions for the creation of Devils Playground. Desert plants such as sagebrush,Utah juniper, pinyon pine, Mormon tea, and cheatgrass are common throughout the area.

Floristic similarity, diversity, and endemism as indicators of refugia characteristics and needs in the West

2020 ◽  
Author(s):  
George P Malanson ◽  
Dale L Zimmerman ◽  
Daniel B Fagre
Keyword(s):  
Sierra Nevada ◽  
Great Basin ◽  
Community Assembly ◽  
Rocky Mountains ◽  
Initial Conditions ◽  
Geographic Distance ◽  
Stepping Stones ◽  
The West ◽  
Floristic Similarity ◽  
Mountain Ranges

The floras of mountain ranges, and their similarity, beta diversity, and endemism, are indicative of processes of community assembly; they are also the initial conditions for coming disassembly and reassembly in response to climate change. As such, these characteristics can inform thinking on refugia. The published floras or approximations for 42 mountain ranges in the three major mountain systems (Sierra-Cascades, Rocky Mountains, and Great Basin ranges) across the western USA and southwestern Canada were analyzed. The similarity is higher among the ranges of the Rockies while equally low among the ranges of the Sierra-Cascades and Great Basin. Mantel correlations of similarity with geographic distance are also higher for the Rocky Mountains. Endemism is relatively high, but is highest in the Sierra-Cascades (due to the Sierra Nevada as the single largest range) and lowest in the Great Basin, where assemblages are allochthonous. These differences indicate that the geologic substrates of the Cascade volcanoes, which are much younger than any others, play a role in addition to geographic isolation in community assembly. The pattern of similarity and endemism indicates that the ranges of the Cascades will not function well as stepping stones and the endemic species that they harbor may need more protection than those of the Rocky Mountains. The geometry of the ranges is complemented by geology in setting the stage for similarity and the potential for refugia across the West. Understanding the geographic template as initial conditions for the future can guide the forecast of refugia and related monitoring or protection efforts.

scholarly journals Spatially distributed water-balance and meteorological data from the Wolverton catchment, Sequoia National Park, California

2018 ◽  
Vol 10 (4) ◽  
pp. 2115-2122
Author(s):  
Roger C. Bales ◽  
Erin M. Stacy ◽  
Xiande Meng ◽  
Martha H. Conklin ◽  
Peter B. Kirchner ◽  
...  
Keyword(s):  
Water Balance ◽  
Sierra Nevada ◽  
Snow Depth ◽  
National Park ◽  
Meteorological Data ◽  
Soil Water Storage ◽  
Spatial And Temporal Patterns ◽  
Online Data ◽  
Data Repositories ◽  
Sequoia National Park

Abstract. Accurate water-balance measurements in the seasonal, snow-dominated Sierra Nevada are important for forest and downstream water management. However, few sites in the southern Sierra offer detailed records of the spatial and temporal patterns of snowpack and soil-water storage and the fluxes affecting them, i.e., precipitation as rain and snow, snowmelt, evapotranspiration, and runoff. To explore these stores and fluxes we instrumented the Wolverton basin (2180–2750 m) in Sequoia National Park with distributed, continuous sensors. This 2006–2016 record of snow depth, soil moisture and soil temperature, and meteorological data quantifies the hydrologic inputs and storage in a mostly undeveloped catchment. Clustered sensors record lateral differences with regards to aspect and canopy cover at approximately 2250 and 2625 m in elevation, where two meteorological stations are installed. Meteorological stations record air temperature, relative humidity, radiation, precipitation, wind speed and direction, and snow depth. Data are available at hourly intervals by water year (1 October–30 September) in non-proprietary formats from online data repositories (https://doi.org/10.6071/M3S94T).

REVISION OF NORTH AMERICAN AGABUS LEACH (COLEOPTERA: DYTISCIDAE): LUTOSUS-, OBSOLETUS-, AND FUSCIPENNIS-GROUPS

1994 ◽  
Vol 126 (1) ◽  
pp. 135-181 ◽  
Author(s):  
D.J. Larson
Keyword(s):  
North America ◽  
Pacific Northwest ◽  
Sierra Nevada ◽  
Great Basin ◽  
Great Plains ◽  
North American ◽  
Pacific Coast ◽  
The Pacific ◽  
Sierra Nevada Mountains ◽  
Wide Range

AbstractSpecies of Agabus of the lutosus-, obsoletus-, and fuscipennis-groups, as defined by Larson (1989), are revised. Members of the lutosus- and obsoletus-groups are restricted to the Cordilleran and Great Plains regions of temperate western North America. Within this region, the species of each group are largely parapatric. Three species are assigned to the lutosus-group: A. lutosus LeConte along the Pacific Coast; A. griseipennis LeConte in the Great Basin, Rocky Mountain, and Great Plains regions; and A. rumppi Leech in the southern deserts. Agabus lutosus and A. griseipennis hybridize in the Pacific Northwest; A. lutosus mimus Leech is synonymized with A. lutosus. The obsoletus-group contains five species: A. obsoletus LeConte, A. morosus LeConte, and A. ancillus Fall along the Pacific Coast and the Sierra Nevada Mountains; A. hoppingi Leech in the Sierra Nevada Mountains; and A. obliteratus LeConte, containing two subspecies, A. o. obliteratus and A. o. nectris Leech, new status, with a wide range including the Great Plains and Cordillera but not reaching the Pacific Coast. The four species of the fuscipennis-group, A. ajax Fall, A. coxalis Sharp, A. fuscipennis (Paykull), and A. infuscatus Aubé, are boreal and all except A. ajax are Holarctic. Agabus coxalis is restricted to northwestern North America, the other three species are transcontinental.For each species the following information is provided: synonymy, description, and illustrations of taxonomically important characters; notes on relationships, variation, distribution, and ecology; and a map of North American collection localities. Group diagnoses and keys to the species of each group are presented. A correction to the key to species groups of North American Agabus (Larson 1989) is made with the addition of a couplet to include the obsoletus-group. Lectotypes are designated for A. discolor LeConte and A. obliteratus LeConte.

Uppermost Cambrian and Lower Ordovician conodont biostratigraphy of the Survey Peak Formation (Ibexian/Tremadoc), Wilcox Pass, Alberta, Canada

1996 ◽  
Vol 70 (5) ◽  
pp. 871-890 ◽  
Author(s):  
Zailiang Ji ◽  
Christopher R. Barnes
Keyword(s):  
Great Basin ◽  
Rocky Mountains ◽  
National Park ◽  
Canadian Rocky Mountains ◽  
Calcareous Shale ◽  
Lower Ordovician ◽  
High Species Diversity ◽  
Color Alteration ◽  
Basin Area ◽  
Cai Value

The Survey Peak Formation (350 m thick) consists of calcareous shale, mudstone, siltstone, and limestone-pebble conglomerate, and is formally divided into four revised members, successively: Basal Silty Member, Putty Shale Member, Middle Carbonate Member, and Upper Carbonate Member. The Wilcox Pass section, Jasper National Park, Alberta, provides a standard stratigraphic section for the southern Canadian Rocky Mountains and yielded over 4,500 conodonts from 87 samples which are of high species diversity, moderately well preserved, with a conodont Color Alteration Index (CAI) value of 3. Over 50 multielement species representing some 20 genera are identified, and most are illustrated. Conodont zones recognized in the four members include: Basal Silty Member—Eoconodontus notchpeakensis, Cordylodus proavus, C. caboti, C. intermedins, and C. lindstromi; Putty Shale Member—lower C. angulatus; Middle Carbonate Member—upper C. angulatus and coeval Rossodus manitouensis, Colaptoconus priscus (new) and Scolopodus cf. S. rex; Upper Carbonate Member—Striatodontus lanceolatus-S. striatus. In total, ten conodont lineage and assemblage zones are recognized within the Survey Peak Formation. Most can now be precisely correlated with trilobite faunas and acritarch microfloras described from this section, and with conodont zones established for the Great Basin area, Utah-Nevada, and for western Newfoundland. The Survey Peak Formation is of uppermost Cambrian to lower Ibexian (Tremadoc) in age with the Cambrian-Ordovician boundary placed between 26 and 29 m above the base of the formation in the Basal Silty Member.

scholarly journals Spatially distributed water-balance and meteorological data from the Wolverton catchment, Sequoia National Park, California

2018 ◽  
Author(s):  
Roger C. Bales ◽  
Erin M. Stacy ◽  
Xiande Meng ◽  
Martha H. Conklin ◽  
Peter B. Kirchner ◽  
...  
Keyword(s):  
Water Balance ◽  
Sierra Nevada ◽  
Snow Depth ◽  
National Park ◽  
Meteorological Data ◽  
Soil Water Storage ◽  
Spatial And Temporal Patterns ◽  
Online Data ◽  
Data Repositories ◽  
Sequoia National Park

Abstract. Accurate water-balance measurements in the seasonal, snow-dominated Sierra Nevada are important for forest and downstream water management. However, few sites in the southern Sierra offer detailed records of the spatial and temporal patterns of snowpack and soil-water storage, and the fluxes affecting them, i.e. precipitation as rain and snow, snowmelt, evapotranspiration, and runoff. To explore these stores and fluxes we instrumented the Wolverton basin (2180–2750 m) in Sequoia National Park with distributed, continuous sensors. This 2006–2016 record of snow depth, soil moisture and soil temperature, and meteorological data quantifies the hydrologic inputs and storage in a mostly undeveloped catchment. Clustered sensors record lateral differences with regards to aspect and canopy cover at approximately 2250 and 2625 m in elevation, where two meteorological stations are installed. Meteorological stations record air temperature, relative humidity, radiation, precipitation, wind speed and direction, and snow depth. Data are available at hourly intervals by water year (1 October–30 September) in non-proprietary formats from online data repositories ( https://doi.org/10.6071/M3S94T).

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