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Articles 2191 - 2220 of 2332
Full-Text Articles in Entire DC Network
Effects Of Land Cover, Water Redistribution, And Temperature On Ecosystem Processes In The South Platte Basin, Jill S. Baron, Melannie D. Hartman, Timothy G. F. Kittel, Larry E. Band, Dennis S. Ojima, Richard B. Lammers
Effects Of Land Cover, Water Redistribution, And Temperature On Ecosystem Processes In The South Platte Basin, Jill S. Baron, Melannie D. Hartman, Timothy G. F. Kittel, Larry E. Band, Dennis S. Ojima, Richard B. Lammers
Faculty Publications
Over one‐third of the land area in the South Platte Basin of Colorado, Nebraska, and Wyoming, has been converted to croplands. Irrigated cropland now comprises 8% of the basin, while dry croplands make up 31%. We used the RHESSys model to compare the changes in plant productivity and vegetation‐related hydrological processes that occurred as a result of either land cover alteration or directional temperature changes (−2°C, +4°C). Land cover change exerted more control over annual plant productivity and water fluxes for converted grasslands, while the effect of temperature changes on productivity and water fluxes was stronger in the mountain vegetation. …
The Alien-Citizen Paradox And Other Consequences Of U.S. Colonialism, Ediberto Román
The Alien-Citizen Paradox And Other Consequences Of U.S. Colonialism, Ediberto Román
Faculty Publications
This Article examines the United States' 100-year-old failed promise. In addition to detailing the unequal citizenship status of the people of Puerto Rico, this Article examines the role that racial and ethnic-based prejudice has played in this issue. 34 Essentially, this Article seeks to compare the traditional legal and political rhetoric of American inclusiveness and the virtues of U.S. citizenship to the reality of colonialism and the impact white supremacy has had on U.S. colonial history. By addressing the subordinated status of "aliencitizens," this Article illustrates the incompatibility of equality under colonialism. As Congress addresses the question of Puerto Rico's …
The Evolving Landscape: Homer Aschmann's Geography, Andrew Sluyter
The Evolving Landscape: Homer Aschmann's Geography, Andrew Sluyter
Faculty Publications
No abstract provided.
From Archive To Map To Pastoral Landscape: A Spatial Perspective On The Livestock Ecology Of Sixteenth-Century New Spain, Andrew Sluyter
From Archive To Map To Pastoral Landscape: A Spatial Perspective On The Livestock Ecology Of Sixteenth-Century New Spain, Andrew Sluyter
Faculty Publications
No abstract provided.
A Favored Place: San Juan River Wetlands, Central Veracruz, Ad 500 To The Present. By Alfred H. Siemens, Andrew Sluyter
A Favored Place: San Juan River Wetlands, Central Veracruz, Ad 500 To The Present. By Alfred H. Siemens, Andrew Sluyter
Faculty Publications
No abstract provided.
Tectonic Controls On Sedimentation And Diagenesis In The Tonga Trench And Forearc, Southwest Pacific, P. D. Clift, C. J. Macleod, D. R. Tappin, D. J. Wright, S. H. Bloomer
Tectonic Controls On Sedimentation And Diagenesis In The Tonga Trench And Forearc, Southwest Pacific, P. D. Clift, C. J. Macleod, D. R. Tappin, D. J. Wright, S. H. Bloomer
Faculty Publications
Sedimentation in the Tonga forearc is dominated by the redeposition of volcaniclastic sediment from the arc volcanic front by mass flows and turbidity currents onto the adjacent Tonga Platform, the shallowest, flattest part of the forearc region. The greatest sediment thicknesses accumulate in debris aprons close to the volcanic front. Collision of seamounts, notably the Capricorn Seamount and the Louisville Ridge, with the forearc radically shortens and steepens the adjacent modern trench slope, allowing sediment to be redeposited deep into the trench. Rotation, usually arcward, of existing basins on the midslope during collision generates angular unconformities, while synchronous uplift of …
Sympatric Sea Shells Along The Sea's Shore: The Geography Of Speciation In The Marine Gastropod Tegula, Michael E. Hellberg
Sympatric Sea Shells Along The Sea's Shore: The Geography Of Speciation In The Marine Gastropod Tegula, Michael E. Hellberg
Faculty Publications
Uncertainty and controversy surround the geographical and ecological circumstances that create genetic differences between populations that eventually lead to reproductive isolation. Two aspects of marine organisms further complicate this situation: (1) many species possess planktonic larvae capable of great dispersal; and (2) obvious barriers to movement between populations are rare. Past studies of speciation in the sea have focussed on identifying the effects of past land barriers and on biogeographical breakpoints. However, assessing the role such undeniable barriers actually play in the initial divergence leading to reproductive isolation requires phylogenetic studies of recent radiations living in varying degrees of sympatry …
Genetic Evidence For The Proto-Austronesian Homeland In Asia: Mtdna And Nuclear Dna Variation In Taiwanese Aboriginal Tribes, Terry Melton, Stephanie Clifford, Jeremy Martinson, Mark Batzer, Mark Stoneking
Genetic Evidence For The Proto-Austronesian Homeland In Asia: Mtdna And Nuclear Dna Variation In Taiwanese Aboriginal Tribes, Terry Melton, Stephanie Clifford, Jeremy Martinson, Mark Batzer, Mark Stoneking
Faculty Publications
Previous studies of mtDNA variation in indigenous Taiwanese populations have suggested that they held an ancestral position in the spread of mtDNAs throughout Southeast Asia and Oceania (Melton et al. 1995; Sykes et al. 1995), but the question of an absolute proto-Austronesian homeland remains. To search for Asian roots for indigenous Taiwanese populations, 28 mtDNAs representative of variation in four tribal groups (Ami, Atayal, Bunun, and Paiwan) were sequenced and were compared with each other and with mtDNAs from 25 other populations from Asia and Oceania. In addition, eight polymorphic Alu insertion loci were analyzed, to determine if the pattern …
Plums: A Geography (Poem), Frank Pommersheim
Plums: A Geography (Poem), Frank Pommersheim
Faculty Publications
No abstract provided.
Spatial Variability Of Snow Chemistry In Western Dronning Maud Land, Antarctica, Malin Stenbrrg, Elisabeth Isaksson, Margareta Hansson, Wibjorn Karlen, Paul A. Mayewski, Mark S. Twickler, Sallie I. Whitlow, Niels Gundestrup
Spatial Variability Of Snow Chemistry In Western Dronning Maud Land, Antarctica, Malin Stenbrrg, Elisabeth Isaksson, Margareta Hansson, Wibjorn Karlen, Paul A. Mayewski, Mark S. Twickler, Sallie I. Whitlow, Niels Gundestrup
Faculty Publications
During the austral summer of 1993-94 a number of 1-2 m deep snow pits were sampled in connection with firn-coring in western Dronning Maud Land, Antarctica. The traverse went from 800 to about 3000 m a.s.l. upon the high-altitude plateau. Profiles of cations (Na+, K+, Mg2+, Ca2+), anions (Cl−, NO3-, SO4 2- , CH3SO3 −) and stable oxygen isotopes (δ18O) from 11 snow pils are presented here. Close to the coast 2 m of snow accumulates in about 2-3 years, whilst at sites on the high-altitude plateau 2 m of snow accumulates in 10—14 years. The spatial variation in ion …
Focused Graduate Education: An Invisible But Real Competitive Edge, Roland D. Kankey, Jan P. Muczyk, Neal M. Ely
Focused Graduate Education: An Invisible But Real Competitive Edge, Roland D. Kankey, Jan P. Muczyk, Neal M. Ely
Faculty Publications
The future mission of the Air Force will be diverse and complex. Advanced technology will play an increasingly prominent role; a smaller force must accomplish more. To support this mission, our acquisition corps must be intellectually capable, well educated and trained. Focused graduate education will be essential to sustain this effort.
“Crossing The Great Plains: A Sesquicentennial Look At The 1847 Mormon Pioneer Trek West.”, Jay H. Buckley
“Crossing The Great Plains: A Sesquicentennial Look At The 1847 Mormon Pioneer Trek West.”, Jay H. Buckley
Faculty Publications
A Sesquicentennial Look at the 1847, 1897, 1947, and 1997 commemorations of the Mormon Pioneer Trek West.
Law Reform In Vietnam: The Uneven Legacy Of Doi Moi, Spencer Weber Waller, Lan Cao
Law Reform In Vietnam: The Uneven Legacy Of Doi Moi, Spencer Weber Waller, Lan Cao
Faculty Publications
No abstract provided.
Towards A New Sensibility For International Economic Development, Lan Cao
Towards A New Sensibility For International Economic Development, Lan Cao
Faculty Publications
No abstract provided.
The Chronicler's Speeches And Historical Reconstruction, Mark A. Throntveit
The Chronicler's Speeches And Historical Reconstruction, Mark A. Throntveit
Faculty Publications
No abstract provided.
Assessing Native American Disturbances In Mixed Oak Forests Of The Allegheny Plateau, Andrew Sluyter, Charles M. Ruffner, Marc D. Abrams, Charlie Crothers, Jack Mclaughlin, Richard Kandare
Assessing Native American Disturbances In Mixed Oak Forests Of The Allegheny Plateau, Andrew Sluyter, Charles M. Ruffner, Marc D. Abrams, Charlie Crothers, Jack Mclaughlin, Richard Kandare
Faculty Publications
No abstract provided.
Analysis Of Maize (Zea Mays Subsp. Mays) Pollen: Normalizing The Effects Of Microscope?Slide Mounting Media On Diameter Determinations, Andrew Sluyter
Analysis Of Maize (Zea Mays Subsp. Mays) Pollen: Normalizing The Effects Of Microscope?Slide Mounting Media On Diameter Determinations, Andrew Sluyter
Faculty Publications
Maize (Zea mays subsp. mays) dominates the record of prehistoric agriculture in the Neotropics. Nonetheless, many significant questions of Zea systematics and evolution persist. Palynology provides a record central to addressing those questions, but determining pollen grain diameter remains a significant method- ological issue: diameter is a key characteristic in identification, and diameter seems to be space-time dependent - the latter phenomenon but little understood. One issue in analyzing diam- eter is the confounding effect of microscope-slide mounting media. This study provides correction factors to normalize diam- eter among silicon oil, glycerine jelly, and acrylic resin (du Pont Elvacite), the …
On “Buried Epistemologies: The Politics Of Nature In (Post) Colonial British Columbia”: On Excavating And Burying Epistemologies, Andrew Sluyter
On “Buried Epistemologies: The Politics Of Nature In (Post) Colonial British Columbia”: On Excavating And Burying Epistemologies, Andrew Sluyter
Faculty Publications
No abstract provided.
Landscape Change And Livestock In Sixteenth-Century New Spain: The Archival Data Base, Andrew Sluyter
Landscape Change And Livestock In Sixteenth-Century New Spain: The Archival Data Base, Andrew Sluyter
Faculty Publications
Despite the wealth of Mexican archival data pertinent to understanding the ecological interaction between livestock and landscape during the sixteenth century in New Spain, some fundamental methodological issues persist in the use of the mercedes, or land grants. The degree of completeness of the extant mercedes record and the de facto areal extents of the cattle and sheep estancias both remain uncertain. A cartographic method applied to mercedes for the central Veracruz lowlands addresses those issues and suggests a general method for rigorous analysis of the data base. That method demonstrates that the extant mercedes provide a nearly complete record …
Regional, Holocene Records Of The Human Dimension Of Global Change: Sea-Level And Land-Use Change In Prehistoric Mexico, Andrew Sluyter
Regional, Holocene Records Of The Human Dimension Of Global Change: Sea-Level And Land-Use Change In Prehistoric Mexico, Andrew Sluyter
Faculty Publications
Regional, Holocene records hold particular relevance for understanding the reciprocal nature of global environmental change and one of its major human dimensions: "sustainable agriculture", i.e., food production strategies which entail fewer causes of and are less susceptible to environmental change. In an epoch of accelerating anthropogenic transformation, those records reveal the protracted regional causes and consequences of change (often agricultural) in the global system as well as informing models of prehistoric, intensive agriculture which, because of long tenures and high productivities, suggest strategies for sustainable agricultural in the present. This study employs physiographic analysis and the palynological, geochemical record from …
Modeling Human Evolution - To Tree Or Not To Tree?, Stephen T. Sherry, Mark A. Batzer
Modeling Human Evolution - To Tree Or Not To Tree?, Stephen T. Sherry, Mark A. Batzer
Faculty Publications
No abstract provided.
Alu Insertion Polymorphisms And Human Evolution: Evidence For A Larger Population Size In Africa, Mark Stoneking, Jennifer J. Fontius, Stephanie L. Clifford, Himla Soodyall, Santosh S. Arcot, Nilmani Saha, Trefor Jenkins, Mohammad A. Tahir, Prescott L. Deininger, Mark A. Batzer
Alu Insertion Polymorphisms And Human Evolution: Evidence For A Larger Population Size In Africa, Mark Stoneking, Jennifer J. Fontius, Stephanie L. Clifford, Himla Soodyall, Santosh S. Arcot, Nilmani Saha, Trefor Jenkins, Mohammad A. Tahir, Prescott L. Deininger, Mark A. Batzer
Faculty Publications
Alu insertion polymorphisms (polymorphisms consisting of the presence/absence of an Alu element at a particular chromosomal location) offer several advantages over other nuclear DNA polymorphisms for human evolution studies. First, they are typed by rapid, simple, PCR-based assays; second, they are stable polymorphisms-newly inserted Alu elements rarely undergo deletion; third, the presence of an Alu element represents identity by descent-the probability that different Alu elements would independently insert into the exact same chromosomal location is negligible; and fourth, the ancestral state is known with certainty to be the absence of an Alu element. We report here a study of 8 …
Variability Of A Vestigial Structure: First Metacarpal In Colobus Guereza And Ateles Geoffroyi, Robert G. Tague
Variability Of A Vestigial Structure: First Metacarpal In Colobus Guereza And Ateles Geoffroyi, Robert G. Tague
Faculty Publications
A tenet of evolutionary theory is that, under conditions of stabilizing selection, phenotypic variability is inversely related to selection intensity. Correspondingly, a nonfunctional, vestigial structure is expected to be highly variable relative to its functional homologue. This study tests the hypothesis that species with a vestigial pollex, Colobus guereza and Ateles geoffroyi, have a first metacarpal whose length is both highly variable relative to, and poorly correlated with, the lengths of the other metapodials. The results are consistent with the hypothesis, though this combination of traits is also found in Presbytis rubicunda and Presbytis cristata. The latter two species have …
The Intellectual Property Renaissance In Cyberspace: Why Copyright Law Could Be Unimportant On The Internet, Eric Goldman
The Intellectual Property Renaissance In Cyberspace: Why Copyright Law Could Be Unimportant On The Internet, Eric Goldman
Faculty Publications
No abstract provided.
Stories From The Gender Garden: Transsexuals And Anti-Discrimination Law, Patricia A. Cain
Stories From The Gender Garden: Transsexuals And Anti-Discrimination Law, Patricia A. Cain
Faculty Publications
Federal antidiscrimination law (Title VII) and most state antidiscrimination laws do not apply to discrimination against transsexual persons. The standard legal analysis is that such discrimination is not discrimination on the basis of "sex." This article employs a narrative method in order to raise the reader's consciousness about the lives of transsexual and transgendered persons. Specifically, the article focuses on the stories of female-to-male transsexuals (FTMs) and other females who have embraced male attributes (e.g., butch lesbians). The very existence of many FTMs who are part-male and part-female challenges the bipolar nature of our current sex jurisprudence which assumes that …
"Sale" Of Law And Forum And The Widening Gulf Between "Consumer" And "Nonconsumer" Contracts In The Ucc, William J. Woodward Jr.
"Sale" Of Law And Forum And The Widening Gulf Between "Consumer" And "Nonconsumer" Contracts In The Ucc, William J. Woodward Jr.
Faculty Publications
No abstract provided.
The Nazca Lines, Andrew Sluyter
Veracruz (State), Andrew Sluyter
The Ecological Origins And Consequences Of Cattle Ranching In Sixteenth-Century New Spain, Andrew Sluyter
The Ecological Origins And Consequences Of Cattle Ranching In Sixteenth-Century New Spain, Andrew Sluyter
Faculty Publications
Despite the dramatic landscape changes Mexico has undergone due to the introduction of cattle ranching by the Spaniards in the early sixteenth century, the ecological origins of that pastroecosystem have remained obscure. About 1521, Gregorio de Villalobos implanted an Andalusian-derived herding ecology in the Gulf Coast lowlands that involved seasonal movement of cattle between wetlands and hill lands. Land-grant records demonstrate that as the colonial economy expanded, the transhumant model proliferated and came into conflict with those native settlements that had survived the pandemics of the early sixteenth century. In circumventing viceregal laws meant to protect native cultures and ecologies, …
Climate Forcing And Thermal Feedback Of Residual Lake-Ice Covers In The High Arctic, Peter T. Doran, Christopher P. Mckay, W. Peter Adams, Michael C. English, Robert A. Wharton, Michael A. Meyer
Climate Forcing And Thermal Feedback Of Residual Lake-Ice Covers In The High Arctic, Peter T. Doran, Christopher P. Mckay, W. Peter Adams, Michael C. English, Robert A. Wharton, Michael A. Meyer
Faculty Publications
A discontinuous ice coverage and lake temperature record of 36-yr duration has been compiled for Colour Lake (79°25'N, 90°45'W) on Axel Heiberg Island, Northwest Territories. About once every 6 yr, the ice cover remains through the entire summer, creating a residual ice cover the following winter. Residual ice covers are more frequent in the last 10 yr (1986-1995) than in the 20 yr from 1959 to 1978, indicating a reduction in climate factors controlling ice decay. These factors are identified as the number of thawing degree-days, suggesting a tendency toward cooler summers over the last decade. We report year-round meteorology …