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Swine waste as a source of natural products: A carotenoid antioxidant (Page 1)

Swine waste as a source of natural products: A carotenoid antioxidant

Cahoon LB, Halkides CJ, Song B, Williams CM, Dubay GR, Fries AS, Farmer J, Fridrich W, and Brookshire C ·
2012

Development of Environmentally Superior Technologies for swine waste management has focused on extraction of products with relatively low unit values. Analyses of the bacterial composition of swine waste lagoon samples confirmed the presence of several purple non-sulfur bacteria (PNSB) species known to produce a variety of carotenoids. We examined a carotenoid naturally abundant in North Carolina swine waste lagoons dominated by PNSB.

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The coastal syndromes and hotspots on the coast (Page 1)

The coastal syndromes and hotspots on the coast

Newton A, Carruthers TJB, and Icely J ·
2012

Human intervention has resulted in a number of global and river syndromes that are mirrored by coastal syndromes caused by erosion, subsidence, salinization of aquifers, urbanization, eutrophication, invasive species and over exploitation of natural resources. These problems are now global, with few coastal zones remaining unaffected and pristine. However, the problems are particularly severe at "hotspots" in the coastal zone.

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Timing of climate variability and grassland productivity

Craine JM, Nippert JB, Elmore AJ, Skibbe AM, Hutchinson SL, and Brunsell NA ·
2012

Future climates are forecast to include greater precipitation variability and more frequent heat waves, but the degree to which the timing of climate variability impacts ecosystems is uncertain. In a temperate, humid grassland, we examined the seasonal impacts of climate variability on 27 y of grass productivity. Drought and high-intensity precipitation reduced grass productivity only during a 110-d period, whereas high temperatures reduced productivity only during 25 d in July.

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Beryllium-7 in soils and vegetation along an arid precipitation gradient in Owens Valley, California (Page 1)

Beryllium-7 in soils and vegetation along an arid precipitation gradient in Owens Valley, California

Kaste JM, Elmore AJ, Vest KR, and Okin GS ·
2011

Beryllium-7 is a potentially powerful tracer of atmospheric deposition and recent sediment transport, but the quantity and distribution of Be-7 on arid landscapes have not been described. We measured Be-7 in soil, vegetation, and dust in Owens Valley, California, and describe its distribution in aridisols and mollisols to evaluate its potential as a sediment tracer in desert environments.

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Spectroscopic Analysis of Canopy Nitrogen and Nitrogen Isotopes in Managed Pastures and Hay Land RID D-4569-2009

Elmore AJ and Craine JM ·
2011

Improving watershed nutrient budgets, ecosystem models, and our understanding of the impact of land-use management on ecosystem functioning depends on the development of remote sensing methods that can predict aspects of the nitrogen (N) cycle. This is particularly true for temperate managed grasslands, which constitute a large portion of agricultural land and, at times, export a significant amount of N to aquatic systems and the atmosphere.

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Successful Integration Efforts in Water Quality From the Integrated Ocean Observing System Regional Associations and the National Water Quality Monitoring Network (Page 1)

Successful Integration Efforts in Water Quality From the Integrated Ocean Observing System Regional Associations and the National Water Quality Monitoring Network

Ragsdale R, Vowinkel E, Porter D, Hamilton P, Morrison R, Kohut J, Connell B, Kelsey RH, and Trowbridge P ·
2011

The Integrated Ocean Observing System (100S (R)) Regional Associations and Interagency Partners hosted a water quality workshop in January 2010 to discuss issues of nutrient enrichment and dissolved oxygen depletion (hypoxia), harmful algal blooms (HABs), and beach water quality.

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A hydrographic transient above the Salty Dawg hydrothermal field, Endeavour segment, Juan de Fuca Ridge

Kellogg JP and McDuff RE ·
2010

During systematic repeat hydrography cruises to the Endeavour segment of the Juan de Fuca Ridge in the summers of 2004, 2005, and 2006, we encountered a transient increase in the water column heat content above the Salty Dawg hydrothermal field. First observed in July 2005 and mapped in greater detail in August 2005, this feature was not a typical event or megaplume since potential temperature anomalies were continuously elevated from the plume top to the seafloor.

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Chapter 10: Spatial analysis: Making maps and using spatial analyses

Kelsey RH and Longstaff BJ ·
2010

Although spatial analysis is technically a component of statistical analysis and environmental modeling, the important role it plays, or should play, in coastal assessment programs warrants specific attention in its own separate chapter. This chapter provides some of the basic principles for producing effective maps through to the process of undertaking complex spatial analyses.

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Chapter 11: Program design: developing a comprehensive data strategy

Lookingbill T, Sanders G, Carter S, Best B, Longstaff BJ, and Hawkey JM ·
2010

In this chapter, we describe the logistics of designing a monitoring program to obtain data within an integrated coastal assessment framework. We begin with the challenge of explicitly defining program goals and objectives, and describe the role of conceptual models and diagrams in facilitating this process. We next describe the selection of a subset of physical and chemical indicators for monitoring ecosystem status and trends.

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