Glacial history reflected by geochemically constrained stratigraphic sections in the Chaudière River drainage basin of the Canadian Appalachians

2018 ◽  
Vol 91 (1) ◽  
pp. 234-249 ◽  
Author(s):  
William W. Shilts ◽  
Olivier J. Caron
Keyword(s):  
New York ◽  
Drainage Basin ◽  
Early Pleistocene ◽  
Eastern United States ◽  
Eastern Canada ◽  
Glacial Deposits ◽  
Glacial Sediments ◽  
Oxygen Isotope Stage ◽  
River Region ◽  
History Of

AbstractThe Chaudière River region in the Appalachian Mountains of eastern Canada is approximately 700 km north of the southernmost Pleistocene glacial deposits in New York and New Jersey. Detailed compositional analyses of glacial and non-glacial sediments from stratigraphic exposures and more than 40 boreholes drilled to bedrock provide a compositionally constrained record of glacial events, which include deposits of one Marine Oxygen Isotope Stage (MIS) 6 and two post-MIS 5 glaciations. The glacial and associated proglacial deposits rest on compositionally distinctive, preglacial saprolite that is preserved in deeper valleys. These observations constrain interpretations of the glacial/Pleistocene history of the eastern United States and Canada. The fact that there is no unequivocal evidence of pre-MIS 6 till in the Chaudière River region, while there are well-documented pre-MIS 6 glacial deposits south of there and in the American Midwest, also has major climatic implications. The Laurentide Ice Sheet and its ancestors must have been more robust in the west in the early Pleistocene and in the east most recently.

scholarly journals Post-glacial acidification of two alpine lakes (Sudetes Mts., SW Poland), as inferred from diatom analyses

2016 ◽  
Vol 56 (1) ◽  
pp. 65-77
Author(s):  
Elwira Sienkiewicz
Keyword(s):  
Environmental Changes ◽  
Drainage Basin ◽  
Anthropogenic Pollution ◽  
Mountain Lakes ◽  
Glacial Sediments ◽  
Arctic Regions ◽  
Water Ph ◽  
History Of ◽  
The Difference

Abstract Past environmental changes in mountain lakes can be reconstructed with the use of subfossil diatoms from post-glacial sediments. This study applied such an analysis to two mountain lakes in the Sudetes Mts. in Poland: Mały Staw (MS) and Wielki Staw (WS). Cores 882 cm long (MS) and 1100 cm long (WS) taken from the centre of each lake in 1982 were used to study the long-term acidification history of these lakes. Changes in vegetation indicate that the initial phase of MS started at the end of the Pleistocene. WS sediments began to accumulate shortly after that, at the beginning of the Holocene. The majority of the diatom assemblages are typical of oligotrophic acidic lakes located in alpine and arctic regions. A pH reconstruction based on diatoms (DI-pH) showed long-term acidification dating to almost the beginning of the lakes’ existence. Natural acidification began after the deglaciation, and the most intensive acidification continued to the end of the mid-Holocene. Through the whole period studied, pH decreased by 1.4 in MS and 0.9 in WS. After a period of relatively stable lake water pH, it decreased rapidly during the last few decades of the 20th century, due to anthropogenic pollution: pH declined by 0.7 in MS and 0.3 in WS. Mały Staw, being shallower, smaller, and with a larger drainage basin than Wielki Staw, is more sensitive to acid deposition; this accounts for the difference in pH.

scholarly journals Recent Genotypes of Phytophthora infestans in the Eastern United States Reveal Clonal Populations and Reappearance of Mefenoxam Sensitivity

Plant Disease ◽  
2012 ◽  
Vol 96 (9) ◽  
pp. 1323-1330 ◽  
Author(s):  
Chia-Hui Hu ◽  
Frances G. Perez ◽  
Ryan Donahoo ◽  
Adele McLeod ◽  
Kevin Myers ◽  
...  
Keyword(s):  
United States ◽  
New York ◽  
North Carolina ◽  
Phytophthora Infestans ◽  
Eastern United States ◽  
Ras Gene ◽  
Eastern Canada ◽  
Commercial Potato ◽  
Close Proximity ◽  
The Us

Isolates of Phytophthora infestans (n = 178) were collected in 2002 to 2009 from the eastern United States, Midwestern United States, and eastern Canada. Multilocus genotypes were defined using allozyme genotyping, and DNA fingerprinting with the RG-57 probe. Several previously described and three new mulitilocus genotypes were detected. The US-8 genotype was found commonly on commercial potato crops but not on tomato. US-20 was found on tomato in North Carolina from 2002 through 2007 and in Florida in 2005. US-21 was found on tomato in North Carolina in 2005 and Florida in 2006 and 2007. US-22 was detected on tomato in 2007 in Tennessee and New York and became widespread in 2009. US-22 was found in 12 states on tomato and potato and was spread on tomato transplants. This genotype accounted for about 60% of all the isolates genotyped. The US-23 genotype was found in Maryland, Virginia, Pennsylvania, and Delaware on both tomato and potato in 2009. The US-24 genotype was found only in North Dakota in 2009. A1 and A2 mating types were found in close proximity on potato and tomato crops in Pennsylvania and Virginia; therefore, the possibility of sexual reproduction should be monitored. Whereas most individuals of US-8 and US-20 were resistant to mefenoxam, US-21 appeared to be intermediately sensitive, and isolates of US-22, US-23, and US-24 were largely sensitive to mefenoxam. On the basis of sequence analysis of the ras gene, these latter three genotypes appear to have been derived from a common ancestor. Further field and laboratory studies are underway using simple sequence repeat genotyping to monitor current changes in the population structure of P. infestans causing late blight in North America.

NOTES ON THE LIFE-HISTORY OF THE FOUR-BANDED LEAF-ROLLER, EULIA QUADRIFASCIANA FERN. (LEPID.)

1927 ◽  
Vol 59 (7) ◽  
pp. 149-152
Author(s):  
S. W. Frost
Keyword(s):  
United States ◽  
New York ◽  
Life History ◽  
New Hampshire ◽  
Original Description ◽  
Eastern United States ◽  
Leaf Roller ◽  
North Eastern ◽  
History Of ◽  
First Time

The four-banded leaf-roller, Eulia quadrifasciana Fern., is very closely related and similar in habits to the red-banded leaf-roller, Eulia velutinana Walk. It was described by Fernald (1882) as Lophoderus quadrifasciana but was later placed in the genus Eulia by Kearfott (1905). Fernald (1908) put Lophoderus Steph., in synonymy with Eulia Hubn. For at least eight years following the original description it seems to have attracted little attention. Sanderson (1904) recorded it for the first time as a pest of apple in Delaware. The same year Fletcher (1900) reported it somewhat abundant in Canada. Subsequently it has been recorded from Maine, New Hampshire, Massachusetts, New York, Pennsylvania, Delaware, Illinois and it is apparently common throughout north eastern United States. It has been found somewhat common in Pennsylvania by the writer (1922) who mentions it in connection with Eulia mariana Fern., as a pest of apple.

Messy, Energetic, Intense: A Roundtable Conversation among New York's Asian American Experimental Filmmakers of the Eighties with Roddy Bogawa, Daryl Chin, Shu Lea Cheang, and Rea Tajiri

2020 ◽  
Vol 73 (3) ◽  
pp. 66-78
Author(s):  
Vince Schleitwiler ◽  
Abby Sun ◽  
Rea Tajiri
Keyword(s):  
New York ◽  
New York City ◽  
Asian American ◽  
York City ◽  
American Film ◽  
The Sixties ◽  
History Of

This roundtable grew out of conversations between filmmaker Rea Tajiri, programmer Abby Sun, and scholar Vince Schleitwiler about a misunderstood chapter in the history of Asian American film and media: New York City in the eighties, a vibrant capital of Asian American filmmaking with a distinctively experimental edge. To tell this story, Rea Tajiri contacted her artist contemporaries Shu Lea Cheang and Roddy Bogawa as well as writer and critic Daryl Chin. Daryl had been a fixture in New York City art circles since the sixties, his presence central to Asian American film from the beginning. The scope of this discussion extends loosely from the mid-seventies through the late nineties, with Tajiri, Abby Sun, and Vince Schleitwiler initiating topics, compiling responses, and finalizing its form as a collage-style conversation.

The Modernities of H. Lawrence Freeman

2019 ◽  
Vol 72 (3) ◽  
pp. 719-779
Author(s):  
David Gutkin
Keyword(s):  
Nineteenth Century ◽  
New York ◽  
Reception History ◽  
Black Press ◽  
Late Nineteenth Century ◽  
Starting Point ◽  
History Of ◽  
Late Nineteenth ◽  
White Press ◽  
Grand Opera

H. Lawrence Freeman's “Negro Jazz Grand Opera,” Voodoo, was premiered in 1928 in Manhattan's Broadway district. Its reception bespoke competing, racially charged values that underpinned the idea of the “modern” in the 1920s. The white press critiqued the opera for its allegedly anxiety-ridden indebtedness to nineteenth-century European conventions, while the black press hailed it as the pathbreaking work of a “pioneer composer.” Taking the reception history of Voodoo as a starting point, this article shows how Freeman's lifelong project, the creation of what he would call “Negro Grand Opera,” mediated between disparate and sometimes apparently irreconcilable figurations of the modern that spanned the late nineteenth century through the interwar years: Wagnerism, uplift ideology, primitivism, and popular music (including, but not limited to, jazz). I focus on Freeman's inheritance of a worldview that could be called progressivist, evolutionist, or, to borrow a term from Wilson Moses, civilizationist. I then trace the complex relationship between this mode of imagining modernity and subsequent versions of modernism that Freeman engaged with during the first decades of the twentieth century. Through readings of Freeman's aesthetic manifestos and his stylistically syncretic musical corpus I show how ideas about race inflected the process by which the qualitatively modern slips out of joint with temporal modernity. The most substantial musical analysis examines leitmotivic transformations that play out across Freeman's jazz opera American Romance (1924–29): lions become subways; Mississippi becomes New York; and jazz, like modernity itself, keeps metamorphosing. A concluding section considers a broader set of questions concerning the historiography of modernism and modernity.

Beérkezett könyvek

2008 ◽  
Vol 63 (4) ◽  
pp. 769-770
Author(s):  
Csaba Pléh
Keyword(s):  
New York ◽  
Point Of View ◽  
Cambridge University ◽  
New Science ◽  
Oxford University ◽  
History Of ◽  
The Mind ◽  
Oxford University Press

Danziger, Kurt: Marking the mind. A history of memory . Cambridge University Press, Cambridge, 2008Farkas, Katalin: The subject’s point of view. Oxford University Press, Oxford, 2008MosoninéFriedJudités TolnaiMárton(szerk.): Tudomány és politika. Typotex, Budapest, 2008Iacobini, Marco: Mirroring people. The new science of how we connect with others. Farrar, Straus and Giroux, New York, 2008Changeux, Jean-Pierre. Du vrai, du beau, du bien.Une nouvelle approche neuronale. Odile Jacob, PárizsGazzaniga_n

Evolution of the Paran drainage basin and its relation to the Plio-Pleistocene history of the Arava Rift western margin, Israel

2000 ◽  
Vol 49 (4) ◽  
pp. 215-238 ◽  
Author(s):  
Hanan Ginat ◽  
Yoav Avni ◽  
Zvi Garfunkel ◽  
Hanan Ginata ◽  
Yosef Bartov
Keyword(s):  
Drainage Basin ◽  
Western Margin ◽  
History Of
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