Download or read book An Investigation of Carbon Flux in the Sediment of Castle Lake California written by Frank Stanley Sanders and published by . This book was released on 1976 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Sediments in the Nutrient Dynamics of Castle Lake California written by Richard Gray Carlton and published by . This book was released on 1982 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contributions of Sediment Denitrification to the Nitrogen Cycle in Castle Lake California written by Steven George Paulsen and published by . This book was released on 1987 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beyond the Iron age the ecological relevance of bioactive trace metals other than Fe and organic growth factors in aquatic systems written by Laura Gómez-Consarnau and published by Frontiers Media SA. This book was released on 2015-07-07 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nothing provided
Download or read book California Geology written by and published by . This book was released on 1980 with total page 572 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 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology of the Aquatic Macrophyte Isoetes Occidentalis in Castle Lake California written by Cynthia Ann Hagley and published by . This book was released on 1989 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Transfers Associated with Seston Sedimentation and Sediment Formation in Castle Lake California written by Bruce Lee Kimmel and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Fluxes and Carbon Loading at Lake Tahoe California Nevada written by Bridget Tracy and published by . This book was released on 2011 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to track the loading of carbon (C) to Lake Tahoe as well as the losses of C from the lake for the period of a year (September 2009-September 2010) in order to: better characterize the sources, sinks, and losses of C to and from the lake; determine whether Lake Tahoe is at a quasi-steady state with respect to C loading; understand whether Tahoe acts as a net sink or source of C; and to understand how the lake fits into the C plumbing of the entire basin. The results indicate that the largest source of C to Lake Tahoe is derived from stream flow: 4.33 *106 kg C/yr ± 2.02 *106 kg C/yr (90%CI), with 34% in the form of dissolved organic C (DOC), 45% as dissolved inorganic C (DIC), and 21% as particulate C (PC). The largest loss occurs as CO2 efflux to the atmosphere across the lake surface: 6.52 *106 kg C/yr ± 11.02 *106 kg C/yr (90%CI). The annual allochthonous inputs total less than the annual C losses: 5.41 *106 kg C/yr ± 3.73 *106 kg C/yr (90%CI) vs 8.64 *106 kg C/yr ± 11.03 *106 kg C/yr (90%), indicating a negative net ecosystem carbon balance. However, the total losses do not strongly outweigh inputs and large uncertainties temper the conclusion that net ecosystem carbon balance is strongly negative. The CO2 efflux is four times the load of C lost to lake sediments, illustrating that Lake Tahoe could be a net source of C to the atmosphere. Most C fluxes are influenced by hydrologic fluxes in the lake basin. The 2009 through 2010 study period experienced lower than average stream inflow and outflow. However, lower levels of C influx in a dry year are nearly balanced by depressed C loss associated with corresponding lower stream outflow. Total annual inputs and losses measure less than 1% of the total standing stock of in-lake C: 1621*106 kg C/yr ± 322 *106 kg C/yr (90%), which is overwhelmingly comprised of DIC (94% DIC). The pool of in-lake C accounts for approximately 9% of the total basin C. Efflux annually transfers approximately 2% of the net primary productivity of the adjacent terrestrial landscape to the atmosphere. Uncertainty in budget estimates is evaluated and the effect on conclusions is discussed.
Download or read book Benthic Oxygen and Phosphorus Dynamics in Castle Lake California written by Peter Austin Neame and published by . This book was released on 1975 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Graduate Theses and Dissertations on California Geology 1973 1989 written by and published by . This book was released on 1978 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Reservoir Limnology and Water Quality Management written by M. Straskraba and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume starts with comparative reservoir limnology and deals with problems relating to tropical, semi-arid and temperate reservoirs. The second part concerns mathematical models of reservoirs, including new techniques for investigating their limnology. These cover physical, chemical and biological phenomena, remote sensing and the use of modelling to establish the most efficient strategy for water quality sampling. In the third, on reservoir water quality management, the potential available in fish population management for biomanipulation of reservoir water quality is introduced. Also included is a valuable section on a wide range of water quality measures, coming from the well-known Czech Hydrobiological Laboratory. Finally the editors summarise the present state of reservoir limnology. This book will be of interest to hydrobiologists and aquatic ecologists, reservoir and sanitary engineers, fisheries officers, postgraduate teaching, and the water industry dealing with drinking water supply and will provide insight into regulated rivers. It draws information from all over the world and is relevant to the whole world.
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2006 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lake Sediments as Evidence of Natural and Human Induced Environmental Change from California and Nevada written by Liam Michael Reidy and published by . This book was released on 2013 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on the history of natural and human-induced environmental change as recorded in the sediments of two lakes: Mountain Lake in the Presidio National Park, San Francisco, California and Big Soda Lake, near Fallon, Churchill County, Nevada. The records of these lakes examined in this study cover approximately the last 2,000 years. Sediment cores from the lakes were dated with radiocarbon, lead-210, plutonium 240/239, tephrachronology, and the first appearance of non-native pollen types. The cores were analyzed to determine changes in stable isotopes (carbon and oxygen), sediment chemistry, fossil pollen, magnetic susceptibility, organic content, and brine shrimp cyst concentrations. Big Soda Lake has been the subject of scientific investigation since the 19th Century and two famous scientists have previously worked at the site. First, the geologist, Israel Russell explored the lake in 1882 as part of his work on Pleistocene Lake Lahontan and provided the first scientific report on the lake. Later in 1933, Evelyn Hutchinson, the famous Yale limnologist, provided the first detailed limnological report for the lake. More recently in the 1980's, the lake has been studied by scientists from the United States Geological Survey. However, prior to the research reported on here, very little was known of the history of the lake or to what extent its sediments contained a useful record of environmental change. The sediments of Big Soda Lake provide clear evidence for both natural and human-induced environmental change during the past 1600 years. The climate record developed from the analyses of stable isotopes of oxygen and carbon, sediment chemistry, and the concentrations of brine shrimp cysts show several significant shifts in climate. The early part of the record from A.D. 400-850 is period marked by a fluctuating climate, with alternating wet/dry phases each lasting several decades each (40-60 years). During the period known as the Medieval Climate Anomaly (MCA)(A.D. 850-1400), we observe at least two relatively dry periods from A.D. 850-1150 and A.D. 1260-1400. Between the two dry phases, there is a pronounced wet period from A.D. 1150-1260. This wet period matches fairly well with evidence presented in other paleoenvironmental studies in the western Great Basin. During the Little Ice Age (LIA), the evidence indicates that the Big Soda Lake area was not always colder and/or wetter, but that it was in fact drier and perhaps warmer from A.D. 1400-1700 than it had been in the previous millennium. Pronounced dry phases were observed around A.D. 1400, A.D. 1500 and A.D. 1650. The wettest period during the LIA came between A.D. 1750-1800. The human impact record at Big Soda Lake developed from the analyses of stable isotopes of oxygen and carbon, sediment chemistry, and the concentrations of brine shrimp cysts show several dramatic changes in and around the lake since Anglo American settlement of the area began, in the 1850's. Several human impacts have been identified, including regional mining activity, soda salt extraction from the lake, and irrigation induced rising groundwater levels in the last century. Two of these events have dramatically impacted the lake in that time. Firstly, the development of a commercial soda manufacturing and processing facility at the lake beginning in 1875 until the early 20th century; and secondly, the development of irrigation agriculture which led to an 18 m rise in lake level in the first few decades of the twentieth century. The sediments at Mountain Lake provide evidence of unprecedented heavy metal contamination at the San Francisco Presidio during the past 60 years. The lake evidence is consistent with local land-use changes initiated by the arrival of Europeans in the area after 1776 and the construction of California State Highway 1 adjacent to the lake in the late 1930's. The study shows how small water bodies alongside roads can concentrate heavy metals and demonstrates the need for careful scientific investigation of sediments earmarked for dredging to determine what if any contaminants are present. A key outcome of the Mountain Lake research carried out as part of this dissertation was that in the Fall of 2011 a Federal judge ordered the California Department of Transportation (Caltrans) to pay 13.5 million dollars to the Presidio Trust so that the contaminated sediments could be removed and further run-off from the road be prevented from entering the lake.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1988 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by International Association of Theoretical and Applied Limnology and published by . This book was released on 1988 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
