615 research outputs found

    Research Progress Report, No. 17

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    Legumes are notable for their ability to convert atmospheric dinitrogen into forms of nitrogen which are usable by plants. This is done in association with bacteria (called Rhizobium) which inhabit nodules of the plant roots. This process is called nitrogen-fixation. Legumes are important as forage and food crops due to their high protein content. Some are also useful for soil conservation purposes. There was no information on nitrogen fixation by legume crops in Alaska. This research was initiated to determine how much nitrogen different types of legumes can fix in interior Alaska

    MP 2012-02

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    Final report to BP.The Prudhoe Bay oil fields, Alaska were discovered in 1968, and commercial production commenced in 1977 with the completion of the Trans-Alaska Pipeline. Oil production has been declining since 1989, although additional exploratory drilling continues. Support facilities for oil production are built on permafrost soils that surface-thaw in summer to form extensive wetlands composed of moist meadows, sedge marshes, moist sedge-dwarf shrub tundra, grass marshes, small ponds and lakes (Walker and Acevedo 1987). To prevent thawing and subsidence of subsurface, ice-rich soils, gravel pads, 2m (6 ft) or more thickness have been built to support drilling sites as well as roads, airstrips and building pads (Kidd et al. 2006). As well sites are decommissioned, the gravel is wholly or partially removed resulting in the need for site rehabilitation and/or restoration to support wetland plants and, in some instances, enhance wildlife habitat (McKendrick 1991, Jorgenson and Joyce 1994, Kidd et al. 2004, 2006). Since the 1970s, methods to revegetate arctic wetlands have included a variety of planting techniques, seed treatments, seeding with native and non-native species (mostly grasses), and fertilizer applications (Chapin and Chapin 1980; Bishop and Chapin 1989, Jorgenson 1988, Kidd and Rossow 1998, Kidd et al. 2004, 2006, Maslen and Kershaw 1989, McKendrick 1987, 1991, 2000, McKendrick et al. 1980, McKendrick and Mitchell 1978, Mitchell et al. 1974). Treatments also have included sprigging and plug transplantation (Kidd et al. 2004, 2006), surface manipulation (Streever et al. 2003), as well as natural re-colonization (Ebersole 1987, Schwarzenbach 1996). These methods have been partially successful. The gravelly soils often are dry, nutrient-poor, and have a higher pH and lower organic matter content than surrounding soils, so natural recolonization does not occur readily (Bishop and Chapin 1989, Jorgenson and Joyce 1994). Methods such as sprigging and plug transplanting are slow, labor intensive and expensive compared to direct seeding. Fertilization, especially with phosphorus, is recommended for long-term survival of plants grown on gravelly sandy soils (BP Exploration and McKendrick 2004). Two common species in the arctic coastal wetlands are water sedge, Carex aquatilis Wahlenb. and cotton sedge, Eriophorum angustifolium Honck. Carex aquatilis in particular forms large populations that spread vegetatively by rhizomes and often dominate these wetland environments (Shaver and Billings 1975). Despite their abundance, these species have not been considered for revegetation because of poor seed germination and inadequate information on seed development and viability (Dr. William Streever, BP Alaska, pers. comm.). Both Carex and Eriophorum in arctic environments produce abundant seeds, but seed viability and germination often is low and highly variable among years and locations (Archibold 1984, Billings and Mooney 1968, Ebersole 1989, Gartner et al. 1983). Germination recommendations for both species vary by location and have included an array of pretreatments such as light, alternating temperatures, cold stratification, scarification, and high and low temperature dry storage (Amen 1966, Billings and Mooney 1960, Bliss 1958, Hunt and Moore 2003, Johnson et al. 1965, Phillips 1954 and Steinfeld 2001). The purpose of this project was to explore methods of seed germination of Carex aquatilis and Eriophorum angustifolium, to learn the conditions for germination and dormancy control mechanisms, and identify seed treatments that might enhance germination for eventual use in direct-seeding or plug production for arctic wetland revegetation

    No-till Forage Establishment in Alaska

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    We assessed the effectiveness of no-till forage establishment at six Alaska locations: Anchor Point, Sterling, Point MacKenzie, Palmer, Delta Junction, and Fairbanks. Directly seeding grass into established grass stands generally did not improve forage yields or quality. Seeding rate had little effect on establishment of newly seeded forages in no-till. Grass yields were depressed when companion crop yields were high, and they typically did not recover in subsequent years. Red clover established well, producing high yields of good quality forage under no-till at Point MacKenzie, but established poorly at Anchor Point and Delta Junction. These results indicated that no-till seeding of most forage crops into declining grass stands is not likely to be successful in Alaska with current available technology

    MP 2009-09

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    As the price of traditional fossil fuels escalates, there is increasing interest in using renewable resources, such as biomass, to meet our energy needs. Biomass resources are of particular interest to communities in interior Alaska, where they are abundant (Fresco, 2006). Biomass has the potential to partially replace heating oil, in addition to being a possible source for electric power generation (Crimp and Adamian, 2000; Nicholls and Crimp, 2002; Fresco, 2006). The communities of Tanana and Dot Lake have already installed small Garn boilers to provide space heating for homes and businesses (Alaska Energy Authority, 2009). A village-sized combined heat and power (CHP) demonstration project has been proposed in North Pole. In addition, several Fairbanks area organizations are interested in using biomass as a fuel source. For example, the Fairbanks North Star Borough is interested in using biomass to supplement coal in a proposed coal-to-liquids project, the Cold Climate Housing Research Center is planning to test a small biomass fired CHP unit, and the University of Alaska is planning an upgrade to its existing coal-fired power plant that could permit co-firing with biomass fuels. The challenge for all of these projects is in ensuring that biomass can be harvested on both an economically and ecologically sustainable basis

    Fall Seeding: Will it Work in Interior Alaska?

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    Short growing seasons in interior Alaska, averaging 90 days in Fairbanks, are a major factor affecting crop production. In the past, volunteer germination of seed from previous years crops has been observed in the field. These volunteer plants tend to get a head start on spring seeded plants, indicating that the use of fall planting could have potential advantages. Spring planting is often delayed due to soil wetness following snow-melt. This problem could be avoided with fall seeding. Seedbed preparation causes rapid drying of the surface of silt loam soils, which are common in interior Alaska. This, combined with low rainfall during spring, often results in moisture levels which are too low for good germination and early growth of shallow planted seeds. Since the soil would not be disturbed in the spring, seeding in fall might allow crops to take advantage of moisture available from snow-melt. Also, fall seeding has the potential of reducing the workload during the short spring planting period

    Democratic States of Unexception: Towards a New Genealogy of the American Political

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    This chapter takes issue with the history and theory of exception along these three lines. The first section offers a critique of the idea of law at the heart of the theory of exception. By taking a closer look at the history and theory of law in early nineteenth-century America, it offers an alternative reading of the role of exception in Emerson’s America – a place and time in which the exception in law was anything but exceptional. The second section offers a critique of the idea of state and sovereignty at the heart of the theory of exception in the early twentieth century. In place of Schmitt’s concept of the political, it offers a reconsideration of John Dewey’s more democratic conception of “the public” and its problems, where again the exception is an unexceptional part of an everyday and agonistic democratic politics. The third section moves us further into the twentieth century, challenging the suzerainty of both liberal and neoliberal characterizations of exception and totalitarianism in that ideologically charged period. Here, Charles Merriam’s ideas about new democracy and new despotism provide an alternative reference point for thinking about the exception, its antidemocratic dangers, and its democratic possibilities. In the context of a revitalized theory of the nature of power in democratic states, the exception does not appear so exceptional. Indeed, when viewed from the perspective of democratic state history, the exception may be one of the most common ways that democratic states exercise power every day. Evaluating the state of exception from the critical perspective of the modern democratic state exposes the limits of the notions of formal law, bureaucratic statecraft, and liberal politics that so frequently preoccupy discussions of exception and emergency governance. Those rather profound limitations suggest the need for an alternative genealogy of the political. In the theories of law, state, and politics in the writings of Emerson, Dewey, and Merriam, this essay proposes a tentative new genealogy of the modern American political – where democracy is not a problem but a solution and where the exception is not exceptional but one of the most quotidian ways of exercising power in agonistic modes of self-government

    Toward a History of the Democratic State

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    Over the past generation, the history of the state has been experiencing a much-noted renaissance, especially in France and the United States. In the United States as late as 1986, Morton Keller complained to William Leuchtenburg in the Journal of American History: “To say that ‘there is much still to be learned about the nature of the State in America’ is … a major understatement. There is close to everything to be learned about the State.” In France as late as 1990, Pierre Rosanvallon’s powerful introduction to L’État en France suggested that an ambitious history of the state could not yet be written because of the lack of works focused specifically on the state. As he put it, “L’État comme problème politique, ou comme phénomène bureaucratique, est au coeur des passions partisanes et des débats philosophiques tout en restant une sorte de non-objet historique.” As the essays in this volume attest, much has changed in the historiography of the American and French states in the intervening 25 years. The state has indeed been brought “back in” in Theda Skocpol’s influential words. In fact, the return of the state in history, theory, and the social sciences in both France and the United States has been so strong and successful, that the subject of “the state/l’État” has again itself become an intellectual crossroads—and a contested terrain—for new important debates and controversies concerning the French and American past more generally

    Social Freedom, Democracy and the Political: Three Reflections on Axel Honneth\u27s Idea of Socialism

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    Axel Honneth’s Idea of Socialism is an important clarion call for an urgent rethinking of the possibilities of a socialism for the twenty-first century. One of the most surprising and satisfying aspects of Axel Honneth’s timely new book is its recovery of the continued vitality of John Dewey’s pragmatic democratic philosophy. These reflections on Honneth’s use of John Dewey for democratizing social freedom, take stock of and explore the political limits of Honneth’s social reconstruction

    Beyond Stateless Democracy

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    Pierre Bourdieu began his posthumously published lectures “On the State” by highlighting the three dominant traditions that have framed most thinking about the state in Western social science and modern social theory. On the one hand, he highlighted what he termed the “initial definition” of the state as a “neutral site” designed to regulate conflict and “serve the common good.” Bourdieu traced this essentially classical liberal conception of the state back to the pioneering political treatises of Thomas Hobbes and John Locke.1 In direct response to this “optimistic functionalism,” Bourdieu noted the rise of a critical and more “pessimistic” alternative—something of a diametric opposite

    Harvest and Nitrogen Management of Three Perennial Grasses as Biomass Feedstock in Subarctic Alaska

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    High energy costs in high-latitude regions have generated interest in the feasibility of bioenergy cropping. The goal of this study was to determine the N response and best harvest regime for biomass production of three perennial, cool-season grass species—tufted hairgrass (Deschampsia caespitosa (L.) P. Beauv.), slender wheatgrass (Elymus trachy­caulus (Link) Gould ex Shinners), and smooth bromegrass (Bromus inermis Leyss)—at two locations in central Alaska. Maximum dry matter yields were 11.3 Mg ha-1 for smooth bromegrass, 8.1 Mg ha-1 for tufted hairgrass, and 8.0 Mg ha-1 for slender wheatgrass, but yields varied greatly among years. We found a linear N response in most cases, with highest yields at the 100 kg N ha-1 application rate. Yields for the double-harvest regime usually did not vary significantly from those of the fall harvest, but spring harvest sometimes reduced yields dramatically. Biomass in the spring harvest was usually dry enough not to require additional drying for storage. Results of this study indicate it may be possible to produce grass biomass yields high enough for use as bioenergy feedstocks in central Alaska, but questions remain about the best management practices and the economics of growing bioenergy crops in Alaska.Les coûts élevés de l’énergie en haute latitude incitent les gens à se pencher sur la faisabilité d’entreprendre des cultures bioénergétiques. L’objectif de cette étude consistait à déterminer la réponse à l’azote et le meilleur régime d’exploitation pour la bioproduction de trois espèces de graminées vivaces en saison fraîche, soit la deschampsie cespiteuse (Deschampsia caespitosa (L.) P. Beauv.), l’élyme à chaumes rudes (Elymus trachycaulus (Link) Gould ex Shinners) et le brome inerme (Bromus inermis Leyss), à deux endroits du centre de l’Alaska. Le rendement maximum de matière sèche était de 11,3 tm ha-1 dans le cas du brome inerme, de 8,1 tm ha-1 dans le cas de la deschampsie cespiteuse et de 8,0 tm ha-1 dans le cas de l’élyme à chaumes rudes, bien que les rendements aient connu d’importantes variations d’une année à l’autre. Nous avons trouvé une réponse linéaire à l’azote dans la plupart des cas, les rendements les plus élevés étant ceux de la dose d’application de 100 kg N ha-1. Le rendement du régime à double récolte ne variait généralement pas beaucoup du régime à récolte d’automne, bien que les récoltes du printemps donnaient parfois un rendement considérablement réduit. De manière générale, la biomasse de la récolte du printemps était suffisamment sèche pour ne pas avoir besoin d’être asséchée davantage avant d’être stockée. Les résultats de cette étude indiquent qu’il peut être possible de produire des rendements en biomasse suffisamment élevés à partir de graminées pour être utilisés comme charge bioénergétique dans le centre de l’Alaska, mais cela dit, il y a toujours lieu de répondre aux questions portant sur les pratiques de gestion exemplaires et le caractère économique des productions bioéner­gétiques en Alaska
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