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Journal articles on the topic 'North American Zone'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Brandt, J. P. "The extent of the North American boreal zone." Environmental Reviews 17, NA (2009): 101–61. http://dx.doi.org/10.1139/a09-004.

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The circumpolar boreal zone is one of the world’s major biogeoclimatic zones, covering much of North America and Eurasia with forests, woodlands, wetlands, and lakes. It regulates climate, acts as a reservoir for biological and genetic diversity, plays a key role in biogeochemical cycles, and provides renewable resources, habitat, and recreational opportunities. Poor agreement exists amongst scientists regarding this zone’s delimitation and the areal extent of boreal forests, even though the zone has been well-studied. This paper reviews the literature on the phytogeography of the zone and mak

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Styron, Richard, Julio García-Pelaez, and Marco Pagani. "CCAF-DB: the Caribbean and Central American active fault database." Natural Hazards and Earth System Sciences 20, no. 3 (2020): 831–57. http://dx.doi.org/10.5194/nhess-20-831-2020.

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Abstract. A database of ∼250 active fault traces in the Caribbean and Central American regions has been assembled to characterize the seismic hazard and tectonics of the area, as part of the Global Earthquake Model (GEM) Foundation's Caribbean and Central American Risk Assessment (CCARA) project. The dataset is available in many vector GIS formats and contains fault trace locations as well as attributes describing fault geometry and kinematics, slip rates, data quality and uncertainty, and other metadata as available. The database is public and open source (available at: https://github.com/GEM

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Rosas, Marcelo R., Ricardo A. Segovia, and Pablo C. Guerrero. "Climatic Niche Dynamics of the Astereae Lineage and Haplopappus Species Distribution following Amphitropical Long-Distance Dispersal." Plants 12, no. 14 (2023): 2721. http://dx.doi.org/10.3390/plants12142721.

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The tribe Astereae (Asteraceae) displays an American Amphitropical Disjunction. To understand the eco-evolutionary dynamics associated with a long-distance dispersal event and subsequent colonization of extratropical South America, we compared the climatic and geographic distributions of South American species with their closest North American relatives, focusing on the diverse South American Astereae genus, Haplopappus. Phylogenetic analysis revealed that two South American genera are closely related to seven North American genera. The climatic niche overlap (D = 0.5) between South and North

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Jakobs, Giselle K., Paul L. Smith, and Howard W. Tipper. "An ammonite zonation for the Toarcian (Lower Jurassic) of the North American Cordillera." Canadian Journal of Earth Sciences 31, no. 6 (1994): 919–42. http://dx.doi.org/10.1139/e94-083.

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This is the second in a series of papers intended to establish a Lower Jurassic ammonite zonation that takes into account the biostratigraphic and biogeographic peculiarities of the North American succession. In North America the lower boundary of the Toarcian is drawn at the first appearance of Dactylioceras above the last occurrence of Amaltheus and Fanninoceras. The lower Toarcian is represented by the Kanense Zone; the middle Toarcian by the Planulata and Crassicosta zones; and the upper Toarcian by the Hillebrandti and Yakounensis zones. Section 5 on the Yakoun River in the Queen Charlott

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Schaberg, Paul G., Paula F. Murakami, Christopher F. Hansen, Gary J. Hawley, Christian O. Marks, and James M. Slavicek. "Preliminary assessments of shoot cold tolerance for American elm bred for enhanced tolerance to Dutch elm disease." Canadian Journal of Forest Research 51, no. 9 (2021): 1386–90. http://dx.doi.org/10.1139/cjfr-2021-0010.

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Although Dutch elm disease (DED) is the primary threat to American elm (Ulmus americana L.), we hypothesized that shoot freezing injury may also limit tree productivity and survival in the north. We assessed shoot cold tolerance and field winter injury of American elm bred for DED tolerance planted in Lemington, Vermont. We tested for differences in cold tolerance associated with date, maternal DED tolerance sources, paternal sources from plant hardiness zones 5a, 6a, and 6b (determined using data from 1996 to 2005), and the interactions of these. Cold tolerance was greatest in the winter, fol

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De Leon, Adrian. "Working the Kodak Zone." Radical History Review 2018, no. 132 (2018): 68–95. http://dx.doi.org/10.1215/01636545-6942403.

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AbstractThis article traces a labor history of colonial photography and the visual production of race in the Philippine Cordilleras, as well as its diasporic performances abroad. It argues that the ethnological visuality of Spanish and American imperialisms in the mountains of Northern Luzon, which produced discourses of race and indigeneity for the purposes of colonial occupation and imperial politics, amounted to various labor relations between Cordillerans in front of the camera, Americans behind and around the camera, and global audiences in European and North American fair midways. What b

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Peters, William L. "ORIGINS OF THE NORTH AMERICAN EPHEMEROPTERA FAUNA, ESPECIALLY THE LEPTOPHLEBIIDAE." Memoirs of the Entomological Society of Canada 120, S144 (1988): 13–24. http://dx.doi.org/10.4039/entm120144013-1.

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AbstractThe complex origins of the North American Ephemeroptera fauna extended from the Lower Permian to the Recent. This paper discusses origins of North American genera of the cosmopolitan family Leptophlebiidae with a few examples from other mayfly families. The two extant subfamilies, Leptophlebiinae and Atalophlebiinae, probably evolved at least by the mid-Cretaceous, or about 100 million years before present. The primitive Leptophlebiinae are distributed throughout most of the Northern Hemisphere and the ancestors of the Leptophlebia–Paraleptophlebia complex within this subfamily dispers

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I.I., Krokhmal. "Summary on introduction of the decorative herbaceous perennials of the world flora in the Steppe zone of Ukraine." Plant Introduction 60 (December 1, 2013): 11–24. https://doi.org/10.5281/zenodo.1627635.

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Bioecological features of 510 species (191 genera and 50 families) of herbaceous perennials of the world flora collection of the Donetsk Botanical Gardens of the NAS of Ukraine have been studied. We have identified the promising 337 species and recommended them to be used in greenery planting in the Steppe zone of Ukraine. The high degree of adaptation to the introduction in the region is typical for North American, Asian, European-Asian, Euro-Mediterranean-Asian, Eurasian, Eurasian-North American bulbous geophytes of steppes and forests of the temperate zone, and mid-latitude mountain areas;

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de Keijzer, Martin, Paul F. Williams, and Richard L. Brown. "Kilometre-scale folding in the Teslin zone, northern Canadian Cordillera, and its tectonic implications for the accretion of the Yukon-Tanana terrane to North America." Canadian Journal of Earth Sciences 36, no. 3 (1999): 479–94. http://dx.doi.org/10.1139/e98-096.

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The Teslin zone in south-central Yukon has previously been described as a discrete zone with a steep foliation unique to the zone. It includes the Anvil assemblage and the narrowest portion of the Yukon-Tanana terrane (the Nisutlin assemblage), and is defined by post-accretionary faults: the Big Salmon fault to the west and the d'Abbadie fault system to the east. The zone was interpreted as a lithospheric suture or a crustal-scale transpression zone, and as the root zone of klippen lying on the North American craton to the east. We demonstrate that deformation and metamorphism are the same ins

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Sergeev, Michael G. "Distribution Patterns of Grasshoppers and Their Kin in the Boreal Zone." Psyche: A Journal of Entomology 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/324130.

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The distribution patterns of Orthoptera are described for the boreal zone. The boreal fauna of Eurasia includes more than 81 species. Many of them are widely distributed. The monotypic genusParacyphoderrisStorozhenko and at least 13 species are endemics or subendemics. About 50 species are known from boreal North America. Four endemic species are distributed very locally. Relationships between the faunas of the Eurasian and North American parts of the boreal zone are relatively weak. The boreal assemblages are usually characterized by the low levels of species diversity and abundance. Grasshop

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Bader, Jeffrey W. "Does the Owl Creek fault zone of north-central Wyoming extend to the Black Hills of South Dakota? Implications for basement architecture of the Wyoming Province." Mountain Geologist 58, no. 1 (2021): 27–37. http://dx.doi.org/10.31582/rmag.mg.58.1.27.

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The North Owl Creek fault is an E–W-striking, basement-rooted Laramide structure located in the Owl Creek Mountains of north-central Wyoming that likely has Precambrian origins. It is defined by a rectilinear zone of deformation that extends eastward into the subsurface where it is postulated to intersect the Kaycee fault zone of the western Powder River Basin, and perhaps extends into western South Dakota along the Dewey fault zone. Several localized basement-rooted wrench zones have been identified in the foreland of the North American Cordillera; however, identification of more regional zon

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Drees, Kevin P., Jeffrey M. Lorch, Sebastien J. Puechmaille, et al. "Phylogenetics of a Fungal Invasion: Origins and Widespread Dispersal of White-Nose Syndrome." mBio 8, no. 6 (2017): e01941-17. https://doi.org/10.5281/zenodo.13481311.

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(Uploaded by Plazi for the Bat Literature Project) Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous studies, presenting challenges for both epizoological tracking of the spread of this fungus and for determining its evolutionary history. We used single

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Drees, Kevin P., Jeffrey M. Lorch, Sebastien J. Puechmaille, et al. "Phylogenetics of a Fungal Invasion: Origins and Widespread Dispersal of White-Nose Syndrome." mBio 8, no. 6 (2017): e01941-17. https://doi.org/10.5281/zenodo.13481311.

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(Uploaded by Plazi for the Bat Literature Project) Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous studies, presenting challenges for both epizoological tracking of the spread of this fungus and for determining its evolutionary history. We used single

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Drees, Kevin P., Jeffrey M. Lorch, Sebastien J. Puechmaille, et al. "Phylogenetics of a Fungal Invasion: Origins and Widespread Dispersal of White-Nose Syndrome." mBio 8, no. 6 (2017): e01941-17. https://doi.org/10.5281/zenodo.13481311.

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(Uploaded by Plazi for the Bat Literature Project) Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous studies, presenting challenges for both epizoological tracking of the spread of this fungus and for determining its evolutionary history. We used single

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15

Drees, Kevin P., Jeffrey M. Lorch, Sebastien J. Puechmaille, et al. "Phylogenetics of a Fungal Invasion: Origins and Widespread Dispersal of White-Nose Syndrome." mBio 8, no. 6 (2017): e01941-17. https://doi.org/10.5281/zenodo.13481311.

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(Uploaded by Plazi for the Bat Literature Project) Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous studies, presenting challenges for both epizoological tracking of the spread of this fungus and for determining its evolutionary history. We used single

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16

Drees, Kevin P., Jeffrey M. Lorch, Sebastien J. Puechmaille, et al. "Phylogenetics of a Fungal Invasion: Origins and Widespread Dispersal of White-Nose Syndrome." mBio 8, no. 6 (2017): e01941-17. https://doi.org/10.5281/zenodo.13481311.

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Abstract:

(Uploaded by Plazi for the Bat Literature Project) Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous studies, presenting challenges for both epizoological tracking of the spread of this fungus and for determining its evolutionary history. We used single

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17

Galbreath, Kurt E., and Eric P. Hoberg. "Return to Beringia: parasites reveal cryptic biogeographic history of North American pikas." Proceedings of the Royal Society B: Biological Sciences 279, no. 1727 (2011): 371–78. http://dx.doi.org/10.1098/rspb.2011.0482.

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Traditional concepts of the Bering Land Bridge as a zone of predominantly eastward expansion from Eurasia and a staging area for subsequent colonization of lower latitudes in North America led to early inferences regarding biogeographic histories of North American faunas, many of which remain untested. Here we apply a host–parasite comparative phylogeographical (HPCP) approach to evaluate one such history, by testing competing biogeographic hypotheses for five lineages of host-specific parasites shared by the collared pika ( Ochotona collaris ) and American pika ( Ochotona princeps ) of North

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18

Rahman, A. K. M. Matiur, M. M. Moosa Khan, and M. Anisul Islam. "Mexican integration into the North American free trade zone." Journal of Economics and Finance 17, no. 1 (1993): 19–29. http://dx.doi.org/10.1007/bf02920079.

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19

Spindler, Chris, Garry C. Rogers, and John F. Cassidy. "The 1978 Brooks Peninsula, Vancouver Island earthquakes." Bulletin of the Seismological Society of America 87, no. 4 (1997): 1011–23. http://dx.doi.org/10.1785/bssa0870041011.

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Abstract A pair of Mw = 5.5 earthquakes occurred beneath the Brooks Peninsula on the northwest coast of Vancouver Island on 2 June and 25 July 1978. These are the largest and best-recorded earthquakes to date in the vicinity of northern Vancouver Island and the adjacent coast margin. A detailed study of these earthquakes was undertaken to examine the contemporary tectonics of this region, specifically the poorly understood interaction between the Explorer plate and the North American plate at the northern end of the Cascadia subduction zone. Both earthquakes were followed by well-defined after

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20

ROEST, W. R., and B. J. COLLETTE. "The Fifteen Twenty Fracture Zone and the North American–South American plate boundary." Journal of the Geological Society 143, no. 5 (1986): 833–43. http://dx.doi.org/10.1144/gsjgs.143.5.0833.

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21

Anton, AM, and HE Connor. "Floral Biology and Reproduction in Poa (Poeae: Gramineae)." Australian Journal of Botany 43, no. 6 (1995): 577. http://dx.doi.org/10.1071/bt9950577.

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Flowers in the cosmopolitan genus Poa L. are predominantly hermaphrodite but many departures from this sex form occur in the New World. Dioecism is primarily a South American breeding system with about three times as many dioecious species as in the rest of the world. Gynomonoecism is a Central and South American trait heavily represented in Andean Peru and Bolivia. This zone of gynomonoecism separates dioecism in North and South America. Gynodioecism, a convenient evolutionary position on the pathway to dioecism, is relatively infrequent and in North America is of indeterminate form in severa

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22

Feltes, Nicolás A., Guillermo L. Albanesi, and Stig M. Bergström. "Conodont biostratigraphy and global correlation of the middle Darriwilian-lower Sandbian (Ordovician) Las Aguaditas Formation, Precordillera of San Juan, Argentina." Andean Geology 43, no. 1 (2016): 60. http://dx.doi.org/10.5027/andgeov43n1-a04.

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Middle Darriwilian to lower Sandbian conodonts were recorded from the Las Aguaditas Formation at its type section in the Argentine Precordillera. A total of 9,974 conodont specimens were recovered from 46 carbonate samples, which represent 68 species of 38 genera. A biostratigraphic study verified a middle Darriwilian age for the interval spanning the contact between the San Juan and the Las Aguaditas formations. The following zones are determined in the study section: the Lenodus variabilis Zone, with the Periodon gladysae and Paroistodus horridus subzones following the Precordilleran scheme;

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Sutherland*, Albert, Mike Schnelle, and Derek Arndt. "Refining Ornamental Heat Zone Categories with Evapotranspiration." HortScience 39, no. 4 (2004): 884A—884. http://dx.doi.org/10.21273/hortsci.39.4.884a.

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The American Horticulture Society (AHS) Heat Zone categories have been developed to categorize ornamental plant adaptability to different air temperature climates. These zones, like the Plant Hardiness map showing plant cold hardiness zones within the United States, are primarily north to south zones. Within the Great Plains region of the United States, the AHS Heat Zone categories provide a basic level of plant adaptability to air temperature, but do not account for plant reaction to variations in wind, relative humidity or sunlight. Daily reference evapotranspiration provides a single number

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24

Yakovlev, Petr. "USMCA: the reloading of the North American free trade zone." Latinskaia Amerika, no. 12 (2018): 6–21. http://dx.doi.org/10.31857/s0044748x0002312-2.

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Vogel, Eugenio E., Felipe G. Brevis, Denisse Pastén, Víctor Muñoz, Rodrigo A. Miranda, and Abraham C. L. Chian. "Measuring the seismic risk along the Nazca–South American subduction front: Shannon entropy and mutability." Natural Hazards and Earth System Sciences 20, no. 11 (2020): 2943–60. http://dx.doi.org/10.5194/nhess-20-2943-2020.

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Abstract. Four geographical zones are defined along the trench that is formed due to the subduction of the Nazca plate underneath the South American plate; they are denoted A, B, C and D from north to south; zones A, B and D had a major earthquake after 2010 (magnitude over 8.0), while zone C has not, thus offering a contrast for comparison. For each zone, a sequence of intervals between consecutive seisms with magnitudes greater than or equal to 3.0 is set up and then characterized by Shannon entropy and mutability. These methods show a correlation after a major earthquake in what is known as

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Stitt, James H. "Additional information on lowest Ordovician trilobites from the uppermost Deadwood Formation, Black Hills and Bear Lodge Mountains, South Dakota and Wyoming." Journal of Paleontology 74, no. 2 (2000): 360–62. http://dx.doi.org/10.1017/s0022336000031565.

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Trilobites from the Missisquoia Zone and the Symphysurina brevispicata Subzone of the Symphysurina Zone (Ibexian Series, lowest Ordovician) were collected from measured sections in the uppermost Deadwood Formation in the Black Hills of South Dakota and Bear Lodge Mountains in northeasternmost Wyoming. These collections were made by Christina Lochman-Balk and her students, and turned over to the author to complete the project. They are compared with previous reported occurrences of this fauna from this area. No trilobites from the underlying Sunwaptan Stage (Upper Cambrian) occur with the lowes

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Andreani, Louis, Claude Rangin, Juventino Martínez-Reyes, et al. "The Neogene Veracruz fault: evidences for left-lateral slip along the southern Mexico block." Bulletin de la Société Géologique de France 179, no. 2 (2008): 195–208. http://dx.doi.org/10.2113/gssgfbull.179.2.195.

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Abstract Structural data combined with analysis of satellite images and seismic profiles show that a major left-lateral strike-slip fault affects the Veracruz basin and post-5 Ma volcanic rocks of the Los Tuxtlas volcanic field (LTVF). The main volcanic alignment of the LTVF is located along this fault. Additional structural data collected in the Trans-Mexican volcanic belt (areas of Xalapa, Teziutlán and Huauchinango) show that the shear zone affects Pliocene Trans-Mexican volcanic rocks. Low seismicity associated to faulted Quaternary markers such as alluvial fans, alluvial terraces and vol

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Boardman, Darwin R., and David M. Work. "Pennsylvanian (Desmoinesian–Virgilian) ammonoid zonation for Midcontinent North America." Stratigraphy 10, no. 1-2 (2013): 105–16. http://dx.doi.org/10.29041/strat.10.1.06.

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The most complete, abundant and diverse Middle–Upper Pennsylvanian ammonoid succession in the world occurs in the North American Midcontinent, where more than 40,000 ammonoids representing 52 genera from at least 42 successive stratigraphic levels have been recovered. The Desmoinesian–Virgilian succession comprises a series of seven substage-scale ammonoid genus zones, in ascending order: Wellerites, Eothalassoceras, Pennoceras, Preshumardites, Pseudaktubites, Shumardites and Subperrinites (new), which are subdivided into 14 ammonoid species- or genus-based subzones. The base of the Eothalasso

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GUPTA, BRD. "Night-time 5Cs, 515 and Bays in H at equatorial electrojet stations in India." MAUSAM 18, no. 4 (2022): 531–34. http://dx.doi.org/10.54302/mausam.v18i4.4710.

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It is shown that while at Indian electrojet station Annamalainagar some night-time enhancement is seen, at Trivandrum also an electrojet station on the contrary some night-time diminution is seen for all the three phenomena SC, SI and Bay. It is also shown that in Indian zone the mean ratio decreases from north to south while in American zone the mean ratio increases from north to south.

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Chen, Mo-Mei. "The rust flora of Sino-Himalayan forests." Canadian Journal of Botany 67, no. 3 (1989): 827–33. http://dx.doi.org/10.1139/b89-111.

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From 1975–1980, an investigation of rusts of the Sino-Himalayan flora was undertaken by an interdisciplinary research team of the Academia Sinica. The Sino-Himalayan plateau (Xizang) is a varied and unique physicogeographical region with combined effects of high altitude, vast expanse, and latitudinal position. A special category of montane (1000–6000 m) and its forest rust flora is proposed. This preliminary study of the hosts and their rusts includes 110 species and 26 genera in five families of rusts. According to biogeographical and ecological analysis, the Sino-Himalayan rust flora can be

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Narkiewicz, Katarzyna, and Pierre Bultynck. "Taxonomy and biostratigraphic significance of Icriodus orri Klapper and Barrick and related Middle Devonian conodont species." Journal of Paleontology 90, no. 6 (2016): 1181–96. http://dx.doi.org/10.1017/jpa.2016.41.

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AbstractThe present study of the Eifelian icriodid conodonts is based on collections from Belarus and the Michigan Basin (USA). It is here proposed that forms originally included in Icriodus orri Klapper and Barrick, 1983 can be attributed to I. retrodepressus Bultynck, 1970, Icriodus orri sensu stricto, and Icriodus michiganus new species, each displaying a distinct morphology, stratigraphical range, and geographic distribution. Icriodus retrodepressus, characterized by a triangular spindle, deep depression in its posterior part, and a well-pronounced spur and antispur, appeared in the lower

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Schoettle-Greene, Philip, Alison R. Duvall, Ann Blythe, Eric Morley, William Matthews, and Sean R. LaHusen. "Uplift and exhumation in Haida Gwaii driven by terrane translation and transpression along the southern Queen Charlotte fault, Canada." Geology 48, no. 9 (2020): 908–12. http://dx.doi.org/10.1130/g47364.1.

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Abstract The mountainous archipelago of Haida Gwaii abuts the transpressive Pacific–North American plate margin north of the Cascadia subduction zone (northwestern North America). Topography on Haida Gwaii has been attributed to either dynamic uplift supported by subduction initiation or crustal shortening driven by shear adjacent the plate-bounding Queen Charlotte fault. In order to resolve how intraplate strain is accommodated, we obtained thermochronometry data from 20 bedrock samples on Haida Gwaii, including zircon (U-Th)/He, apatite (U-Th-Sm)/He, and apatite fission-track dates. With dat

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Kumar, Pradeep, and R. S. Shekhawat. "Costs, Returns, Resource Use Efficiency of American Cotton Production in Irrigated North Western Plain Zone of Rajasthan, India." Asian Journal of Agricultural Extension, Economics & Sociology 41, no. 10 (2023): 759–66. http://dx.doi.org/10.9734/ajaees/2023/v41i102222.

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The study was carried out at Irrigated North Western Plain Zone 1b of Rajasthan in agricultural year 2012-13. This zone covers about 80 percent of the total area of cotton in the state. The study focused on the cost and return, efficiency of resource use and problems faced by the farmers in American cotton production under different farm sizes. Two villages namely 4C and Mirjawala were selected from Sriganganagar tehsil of the zone. Thirty farmers were selected at random in proportion to the total number of farmers in each size group from the list of from American cotton farmers group. The tot

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Hanchang, Peng, Liu Zhenkun, Zhuang Shijie, Mao Xueying, and Chai Zhifang. "Preliminary Study on Neogene Microtektites in the Core Collected from North Pacific." International Astronomical Union Colloquium 126 (1991): 57–60. http://dx.doi.org/10.1017/s0252921100066483.

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Abstract:A great number of microtektites were found in core collected from North Pacific. Because abundant microtektites are restricted to a 20-30 cm thick zone of core, we called this zone is miicrotektite layer. The age of sediments concentrated microtektites is from the Pliocene to the Pleistocene epoch. Research results indicate that these microtektites are similar to the North American tektites and the Australasian tektites, but they have the unique property on the chemistry.

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Hu, Qi, Song Feng, and Robert J. Oglesby. "Variations in North American Summer Precipitation Driven by the Atlantic Multidecadal Oscillation." Journal of Climate 24, no. 21 (2011): 5555–70. http://dx.doi.org/10.1175/2011jcli4060.1.

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Abstract Understanding the development and variation of the atmospheric circulation regimes driven by the Atlantic multidecadal oscillation (AMO) is essential because these circulations interact with other forcings on decadal and interannual time scales. Collectively, they determine the summer (June, July, and August) precipitation variations for North America. In this study, a general circulation model (GCM) is used to obtain such understanding, with a focus on physical processes connecting the AMO and the summertime precipitation regime change in North America. Two experimental runs are cond

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Pessagno, Emile A., Abelardo Cantu-Chapa, James M. Mattinson, Xiangying Meng, and Seyed Mohsen Kariminia. "The Jurassic-Cretaceous boundary: new data from North America and the Caribbean." Stratigraphy 6, no. 3 (2009): 185–264. http://dx.doi.org/10.29041/strat.06.3.01.

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The Jurassic-Cretaceous boundary is the most problematic of all Phanerozoic system boundaries. Its defini- tion is obscured by almost imperceptible faunal and floral change, nomenclatural problems resulting from the poor defini- tion of its bounding stages, the over reliance of calpionellids for correlation, and the provinciality of ammonite zones in the European type area. The unfortunate decision of ammonite stratigraphers to use Calpionella Zone B to mark the base of the Berriasian set back the resolution of the Jurassic-Cretaceous boundary problem by thirty-five years in Europe, North Amer

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Emelyanova, O. Yu, М. F. Tsoy, and L. I. Masalova. "The phenological observations as the basis for the formation of the database of phenological spectrums of woody plants." Vegetable crops of Russia, no. 6 (December 26, 2020): 77–84. http://dx.doi.org/10.18619/2072-9146-2020-6-77-84.

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Relevance. A study of the seasonal (phenological) phenomena and natural connections between them on the background of the relevant environmental conditions is of great scientific and practical interest. Knowledge of the dynamics of the seasonal development of woody plants helps in the selection of species and their assessment from an aesthetic and sanitary points of view, as well as in the development and implementation of measures to increase the sustainability of urban green spaces. Materials and methods. The purpose of these studies is to create a database of the dynamics of seasonal develo

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Taylor, Anthony R., Donnie A. McPhee, and Judy A. Loo. "Incidence of beech bark disease resistance in the eastern Acadian forest of North America." Forestry Chronicle 89, no. 05 (2013): 690–95. http://dx.doi.org/10.5558/tfc2013-122.

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Beech bark disease (BBD) is a fatal affliction of American beech (Fagus grandifolia Ehrh.) in North America. Although natural resistance to BBD has been observed, reports vary with respect to incidence of resistance, with 1% being most commonly acknowledged. In this paper, we provide the first formal, empirical estimate of BBD resistance over a wide geographical area where BBD has been prevalent for longest in North America. We conducted our study in the Acadian Forest region of eastern Canada. Thirty-five beech-dominated stands (>5 ha each) were surveyed across the provinces of New Brunswi

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Savchenko, M., V. Kulyavets, and Yu Burlak. "Problems and prospects of Ukraines economic cooperation with the countries of the north american free trade zone." Galic'kij ekonomičnij visnik 74, no. 1 (2022): 187–97. http://dx.doi.org/10.33108/galicianvisnyk_tntu2022.01.187.

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The paper considers the theoretical foundations of international economic integration. There were certain features of process of economic integration in North America on the way of creation of free trade zone between the USA, Canada, and Mexico. The structural analysis of NAFTA and certain further prospects of development of relations of the North American countries was also conducted with Ukraine in the conditions of integration in a world economy. The methods of scientific research that were used to achieve the goal and to solve the tasks of the article are the following: systematic structur

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Snyder, David B., Brian J. Roberts, and Steven P. Gordey. "Contrasting seismic characteristics of three major faults in northwestern Canada." Canadian Journal of Earth Sciences 42, no. 6 (2005): 1223–37. http://dx.doi.org/10.1139/e05-027.

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The Lithoprobe Slave Northern Cordillera Lithospheric Evolution (SNORCLE) profiles crossed three major tectonic zones of the northwestern Canadian Shield and northern Canadian Cordillera that are diverse in age and in depth of penetration. The oldest (26302590 Ma), the Yellowknife River fault zone, formed as a strike-slip fault in a tensional strain regime. Reflector attenuation or truncations align vertically beneath the fault trace through much of the crust, implying a near-vertical fault plane. The youngest (6010 Ma), the Tintina fault zone, produced cumulative dextral strike-slip displ

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Shaw, Frederick C. "Telephinaand Other Trilobites from the Pratt Ferry Beds, Ordovician of Alabama, U.S.A." Journal of Paleontology 88, no. 3 (2014): 545–55. http://dx.doi.org/10.1666/12-137.

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The Pratt Ferry beds are a three meter thick bioclastic carbonate unit containing thePygodus serrus–P. anserinusconodont zone boundary and lying just below theNemagraptus gracilisgraptolite zone at a single locality in Alabama.TelephinaMarek at Pratt Ferry and other eastern North American localities is represented by at least six species. These are judged widespread and in part conspecific with Scandinavian or Asian forms of similar age. Most of the fifteen Appalachian telephinid species proposed by Ulrich (1930) are reviewed and some synonymized.BevanopsisCooper is present, extending its stra

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Fiebig, Andrea E., John TA Proctor, Usher Posluszny, and Dennis P. Murr. "The North American ginseng inflorescence: development, floret abscission zone, and the effect of ethylene." Canadian Journal of Botany 79, no. 9 (2001): 1048–56. http://dx.doi.org/10.1139/b01-074.

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Characterization of the North American ginseng (Panax quinquefolius L.) inflorescence, the floret abscission zone, and its stimulation by ethylene were undertaken to gain insights into the potential for floret abscission induction as a replacement for the industry practice of expensive manual removal of the inflorescence. In each of 3 years, peduncle length of 3-year-old cultivated ginseng inflorescences increased rapidly in June, reaching maximal values of 140180 mm. During this period, seed head diameter also increased to about 35 mm, while seed head fresh mass increased in July and August

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West, J. L., J. R. Bailey, VMF Almeida-Val, A. L. Val, B. D. Sidell, and W. R. Driedzic. "Activity levels of enzymes of energy metabolism in heart and red muscle are higher in north-temperate-zone than in Amazonian teleosts." Canadian Journal of Zoology 77, no. 5 (1999): 690–96. http://dx.doi.org/10.1139/z99-016.

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Fish living in the Amazon basin typically have body temperatures of about 30°C, whereas freshwater fishes of the north-temperate zone are eurythermal, with typical body temperatures of 10-20°C in summer. Enzyme activity levels in heart and red muscle of Amazonian species, which display various physiological mechanisms for dealing with hypoxic conditions, were compared with those in north-temperate-zone species. Five Amazonian species (acará-açu (Astronotus ocellatus), acari-bodó (Lipossarcus pardalis), tambaqui (Colossoma macropomum), tamoatá (Hoplosternum littorale), and pirarucu (Arapaima gi

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Grant-Mackie, J. A., and N. J. Silberling. "New data on the Upper Triassic bivalve Monotis in North America, and the new subgenus Pacimonotis." Journal of Paleontology 64, no. 2 (1990): 240–54. http://dx.doi.org/10.1017/s0022336000018400.

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Re-examination of some North American collections of the late middle to early late Norian pterioid bivalve Monotis confirms the separation of M. (M.) alaskana Smith from the European type species M. salinaria (Schlotheim). The related M. (M.) haueri Kittl, as differentiated statistically, is more widely represented in southern Alaska, the Canadian Yukon, and Nevada than was formerly recognized. Species described originally from northeastern USSR and now confirmed as present in rocks from Alaska and western Canada include: M. (Entomonotis) pachypleura (Teller), M. (Eomonotis) daonellaeformis Ki

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Taylor, J. F., D. J. Kennedy, J. F. Miller, and J. E. Repetski. "Uppermost Cambrian slope deposits at Highgate Gorge, Vermont: a minor miscorrelation with major consequences for conodont- and trilobite-based chronocorrelation." Journal of Paleontology 65, no. 5 (1991): 855–63. http://dx.doi.org/10.1017/s0022336000037823.

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Uppermost Cambrian and lowest Ordovician slope deposits in Highgate Gorge, northwestern Vermont, yield a succession of conodont faunas (and a few associated trilobite species) similar to that observed in coeval North American carbonate-platform sequences. Decimeter-scale sampling of a 15-m-interval in two sections comprising thin-bedded limestone–shale rhythmites alternating with thick-bedded debris flow conglomerates yielded 60 trilobite specimens and more than 5,000 conodont elements from 48 productive horizons. The new biostratigraphic control does not support earlier claims that the lowest

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Yashchenko, Irina. "Viscous and heavy oils of Arctic zone." Arctic Environmental Research 18, no. 3 (2018): 90–96. http://dx.doi.org/10.3897/issn2541-8416.2018.18.3.90.

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The paper presents the comparative analysis of physicochemical properties of oils in North American, Scandinavian, and Russian sectors of the Arctic. The analysis of oil reserve distribution in the arctic territory and aquatory shows that the Russian sector is much higher in oil reserves than North American and Scandinavian sectors. A study of physicochemical properties of viscous and heavy oils in the Russian part of the Arctic is presented in this paper. Using a global database on physical and chemical properties of oils, analysis of the distribution of viscous, heavy oils in terms of the vo

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Yashchenko, Irina. "Viscous and heavy oils of Arctic zone." Arctic Environmental Research 18, no. (3) (2018): 90–96. https://doi.org/10.3897/issn2541-8416.2018.18.3.90.

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The paper presents the comparative analysis of physicochemical properties of oils in North American, Scandinavian, and Russian sectors of the Arctic. The analysis of oil reserve distribution in the arctic territory and aquatory shows that the Russian sector is much higher in oil reserves than North American and Scandinavian sectors. A study of physicochemical properties of viscous and heavy oils in the Russian part of the Arctic is presented in this paper. Using a global database on physical and chemical properties of oils, analysis of the distribution of viscous, heavy oils in terms of the vo

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Baars, D. L. "Basement Tectonic Configuration in Kansas." Bulletin (Kansas Geological Survey), no. 237 (April 16, 2024): 7–9. https://doi.org/10.17161/kgsbulletin.no.237.20414.

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The structure of the Precambrian basement of Kansas, midcontinent USA, is dominated by conjugate north-northeast- and northwest-trending wrench fault zones. North-northeast-trending faults of the Midcontinent Rift System (MRS) extend from Lake Superior across Kansas and into north-central Oklahoma. The fault zone widens from about 100 km (60 mi) in northeast Kansas to more than 160 km (96 mi) in south-central Kansas in a series of horsetail splays. North-northeast-trending structures of the MRS are displaced by about 80 km (48 mi) of dextral offset by the northwest-trending strike-slip fault z

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Salisbury, Richard V. "Great Britain, The United States, and the 1909–1910 Nicaraguan Crisis." Americas 53, no. 3 (1997): 379–94. http://dx.doi.org/10.2307/1008030.

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Victory over Spain in 1898 provided the United States with the opportunity to pursue the various options that imperial status now offered. Indeed, under the influence of the strategic precepts of an Alfred Thayer Mahan, the messianic expansionism of a Josiah Strong, the extended frontier concept of a Frederick Jackson Turner, and the now seemingly obtainable economic aspirations of a James G. Blaine, North Americans looked to their newly established imperial arena with anticipation and confidence. It would be the adjacent circum-Caribbean region, for the most part, where the United States gove

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McRoberts, Christopher A. "Late Triassic succession of North American halobiid bivalves and their circum-Pacific correlation." Paleontological Society Special Publications 6 (1992): 207. http://dx.doi.org/10.1017/s247526220000767x.

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The thin-shelled pteriid bivalve Halobia is widely distributed in Upper Triassic (Carnian-mid Norian) marine strata throughout the circum-Pacific region with significant occurrences along the western and arctic margin of North America, northeast Russia, China, Japan, Indochina, islands of the western Pacific, and New Zealand. Halobiids are commonly associated with deep water, black shale facies typically devoid of macrobenthos. This facies occurrence and a thin-shelled, flat-valved morphology suggests an autecology (possibly pseudoplanktic) in contrast to modern benthic pteriids. High speciati

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