Landscape controls on the timing of spring, autumn, and growing season length in mid-Atlantic forests

Elmore AJ, Guinn SM, Minsley BJ, and Richardson AD ·
2012

The timing of spring leaf development, trajectories of summer leaf area, and the timing of autumn senescence have profound impacts to the water, carbon, and energy balance of ecosystems, and are likely influenced by global climate change. Limited field-based and remote-sensing observations have suggested complex spatial patterns related to geographic features that influence climate.


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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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A Habitat-Based Framework for Communicating Natural Resource Condition (Page 1)

A Habitat-Based Framework for Communicating Natural Resource Condition

Carruthers TJB, Carter SL, Lookingbill TR, Florkowski LN, Hawkey JM, and Dennison WC ·
2012

Progress in achieving desired environmental outcomes needs to be rigorously measured and reported for effective environmental management. Two major challenges in achieving this are, firstly, how to synthesize monitoring data in a meaningful way at appropriate temporal and spatial scales and, secondly, how to present results in a framework that allows for effective communication to resource managers and scientists as well as a broader general audience.


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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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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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Impacts of Hypoxia on Zooplankton Spatial Distributions in the Northern Gulf of Mexico (Page 1)

Impacts of Hypoxia on Zooplankton Spatial Distributions in the Northern Gulf of Mexico

Roman MR, Pierson JJ, Kimmel DG, Boicourt WC, and Zhang X ·
2012

The northern Gulf of Mexico (NGOMEX) was surveyed to examine the broad-scale spatial patterns and inter-relationships between hypoxia (< 2 mg L-1 dissolved oxygen) and zooplankton biovolume. We used an undulating towed body equipped with sensors for conductivity, temperature, depth, oxygen, fluorescence, and an optical plankton counter to sample water column structure, oxygen, and zooplankton at high spatial resolution (1 m-vertical; 0.25-1 km-horizontal).


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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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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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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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Chapter 1: Environmental campaigns: achieving a shared vision using research, monitoring, and management

Dennison WC and Wicks EC ·
2010

A coastal assessment program cannot simply draw from a few individuals; it takes contributions from an entire community and the creation of a shared vision. Keeping a balance among research, monitoring, and management is especially important and includes the dynamics of human interactions and strong communication between stakeholders and the broader community.


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