Download or read book Relations Between Leaf Nutrient Concentrations and Mineralization Rates Along an Elevational Gradient in the Southeastern Appalachians USA written by Converse Griffith and published by . This book was released on 1993 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annotated Bibliography of Publications on Watershed Management and Ecological Studies at Coweeta Hydrologic Laboratory 1934 1994 written by and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precipitation Partitioning by Vegetation written by John T. Van Stan, II and published by Springer Nature. This book was released on 2020-01-01 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents research on precipitation partitioning processes in vegetated ecosystems, putting them into a global context. It describes the processes by which meteoric water comes into contact with the vegetation's canopy, typically the first surface contact of precipitation on land. It also discusses how precipitation partitioning by vegetation impacts the amount, patterning, and chemistry of water reaching the surface, as well as the amount and timing of evaporative return to the atmosphere. Although this process has been extensively studied, this is the first review of the global literature on the partitioning of precipitation by forests, shrubs, crops, grasslands and other less-studies plant types. The authors offer global contextualization combined with a detailed discussion of the impacts for the climate and terrestrial ecohydrological systems. As such, this comprehensive overview is a valuable reference tool for a wide range of specialists and students in the fields of geoscience and the environment.
Download or read book 12th Central Hardwood Forest Conference written by Jeffrey W. Stringer and published by . This book was released on 1999 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Central Hardwood Forest stretches from the upper Southeast to the Great Lakes & from Arkansas to Mass. It is an oak-dominated deciduous forest occurring in hilly to mountainous areas of this region -- the most extensive temperate deciduous forest in the world. Concerns the biology & management of central hardwoods by forest scientists from throughout the Central Hardwood Region of the Eastern U.S. Includes papers on: nutrient dynamics; stand structure; reforestation/reclamation; harvesting; modeling/inventory; wildlife; silviculture; disturbance effects; & genetics/tree improvement. Includes 21 poster presentations.
Download or read book General Technical Report SRS written by and published by . This book was released on 1995 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book pitre d un colporteur a l auteur de la Lettre sur l Abr g de l histoire cclesiastique de M l abb R c c written by and published by . This book was released on 1759 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1986 with total page 1920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Nitrification and Mineralization Rates Along an Elevation Gradient in the Great Smoky Mountains National Park written by Christopher James Rolison and published by . This book was released on 2012 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Great Smoky Mountains National Park (GRSM) is an area sensitive to acid deposition. Although reports indicate there have been reductions of acid deposition in the eastern United States, water quality in streams has not recovered to perceived natural levels. Coupled soil biogeochemical processes of nitrification and nitrogen mineralization can acidify soil water and play a key role in the fate of nitrogen-based acid deposition and observed stream acidification. Characterizing nitrogen decomposition rates at different elevations improves our understanding of the potential effects of acid deposition and soil interactions with acid ions. Soil chemical properties and potential reaction rates for nitrification and mineralization among 36 sites in three GRSM watersheds were characterized by 28-day laboratory incubation experiments. In addition, relationships were identified by comparing soil chemistry to watershed characteristics including site location, soil characteristics, and geomorphic factors. Nitrification rates ranged between 1 and 177 [MU]eq kg−1 dry soil day−1, and mineralization rates ranged between 2 and 339 [MU]eq kg−1 dry soil day−1. For the three watersheds combined, mineralization and nitrification rates were significantly correlated with elevation. Mineralization was increasing at a rate of 0.1578 / 0.0816 [MU]eq kg−1 dry soil day−1 m−1 in the A and B/C soil horizons, and nitrification at 0.1269 / 0.0425 [MU]eq kg−1 dry soil day−1 m−1, in the A and B/C soil horizons. For individual watersheds, Cosby and the West Prong of the Little Pigeon shared this significant positive correlation while the Noland Divide watershed did not because sample sites were only located at higher elevations. Soil horizon class played a key role in controlling the nitrogen cycle processes, where the A soil horizon was found to be more dependent on total organic nitrogen, and the B/C soil horizon was more dependent on organic matter. Nitrification and mineralization rates were not correlated with site slope, organic matter to total organic nitrogen ratio, and A soil horizon depth. The study results illustrate that nitrification and mineralization play a significant part of the soil biogeochemical process that govern episodic stream acidification response in the GRSM.
Download or read book U S Canadian Range Management 1978 1980 written by John F. Vallentine and published by Phoenix, Ariz. : Oryx Press. This book was released on 1981 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Land use Change on the Long term Persistence of Forest Understory Herbs in the Southern Appalachian Highlands written by Jennifer M. Fraterrigo and published by . This book was released on 2005 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Successional Changes in Leaf Nutrient Concentrations of Woody and Herbaceous Species written by Daniel Walter Kuchta and published by . This book was released on 2016 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Regulating Nitrogen Mineralization Rates of an Oak Pine and Hardwood Forest Along an Elevation Gradient written by Gregory Michael Bonito and published by . This book was released on 2001 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Altitudinal and Thermal Variation in Ambient Nutrient Uptake and Uptake Kinetics in Temperate Streams written by Brady S. Kohler and published by . This book was released on 2013 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature is often considered a master variable controlling many chemical reactions and biological processes. Research efforts have begun address how temperature affects whole stream nutrient uptake rates, but little has attention has been paid to the influence of temperature on nutrient uptake versus concentration kinetics. In this study, we investigated 1) how ambient nutrient uptake rates and 2) nutrient uptake kinetics vary along a thermal gradient established by an altitudinal gradient in the Rocky Mountains, Colorado, USA. Instantaneous nutrient additions were performed at 15 streams within three adjacent drainage basins in the Colorado Rocky Mountains to test these questions. Ambient uptake metrics were estimated using multiple approaches and quantitatively related to variation in ambient temperatures and long-term thermal regimes. We found no relationship among nutrient uptake velocities and temperature. However, NH4+ uptake rates significantly increased with temperature whereas NO3- uptake rates decreased with temperature, though the significance differed by estimation approach and component of thermal regime examined. Response in uptake to increased nutrient availability was also estimated for each stream, where response in NO3- uptake was found to increase with increasing temperatures. In summary, temperature partially accounted for variation in nutrient uptake rates observed in this study. However, background nutrient concentrations and other stream characteristics also exert control on uptake dynamics and I surmise those controls dampen the role of temperature in controlling uptake rates in these streams.
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1985 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference Papers Index written by and published by . This book was released on 1979 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Papers presented at recent meeting held all over the world by scientific, technical, engineering and medical groups. Sources are meeting programs and abstract publications, as well as questionnaires. Arranged under 17 subject sections, 7 of direct interest to the life scientist. Full programs of meetings listed under sections. Entry gives citation number, paper title, name, mailing address, and any ordering number assigned. Quarterly and annual indexes to subjects, authors, and programs (not available in monthly issues).
Download or read book Nutrient Criteria Technical Guidance Manual written by and published by . This book was released on 2000 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
