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Book Concentrations of Pesticides and Pesticide Degradates in the Croton River Watershed in Southeastern New York July September 2000

Download or read book Concentrations of Pesticides and Pesticide Degradates in the Croton River Watershed in Southeastern New York July September 2000 written by Patrick J. Phillips and published by . This book was released on 2002 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Residential and Agricultural Land Uses on the Chemical Quality of Baseflow of Small Streams in the Croton Watershed Southeastern New York

Download or read book Effects of Residential and Agricultural Land Uses on the Chemical Quality of Baseflow of Small Streams in the Croton Watershed Southeastern New York written by Paul Martin Heisig and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Pesticides in Stream Sediment and Aquatic Biota

Download or read book Pesticides in Stream Sediment and Aquatic Biota written by Lisa H. Nowell and published by CRC Press. This book was released on 2019-06-12 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 20 years after the ban of DDT and other organochlorine pesticides, pesticides continue to be detected in air, rain, soil, surface water, bed sediment, and aquatic and terrestrial biota throughout the world. Recent research suggests that low levels of some of these pesticides may have the potential to affect the development, reproduction,

Book Pesticides in Surface Waters

Download or read book Pesticides in Surface Waters written by Steven J. Larson and published by CRC Press. This book was released on 2019-04-24 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticde use in agriculture and non-agriculture settings has increased dramatically over the last several decades. Concern about adverse effects on the environment and human health has spurred an enormous amount of research into their environmental behavior and fate. Pesticides in Surface Waters presents a comprehensive summary of this research.

Book The Biological Impact of Pesticides in the Environment

Download or read book The Biological Impact of Pesticides in the Environment written by James W. Gillett and published by . This book was released on 1970 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Seasonal Variability and Effects of Stormflow on Concentrations of Pesticides and Their Degradates in Kisco River and Middle Branch Croton River Surface Water Croton Reservoir System New York May 2000 February 2001

Download or read book Seasonal Variability and Effects of Stormflow on Concentrations of Pesticides and Their Degradates in Kisco River and Middle Branch Croton River Surface Water Croton Reservoir System New York May 2000 February 2001 written by Patrick J. Phillips and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Pesticides in Surface Waters

    Pesticides in Surface Waters

    Book Details:
  • Author : STEVEN J.. CAPEL LARSON (PAUL D.. MAJEWSKI, MICHAEL.)
  • Publisher : CRC Press
  • Release : 2020-09-30
  • ISBN : 9780367455828
  • Pages : 400 pages

Download or read book Pesticides in Surface Waters written by STEVEN J.. CAPEL LARSON (PAUL D.. MAJEWSKI, MICHAEL.) and published by CRC Press. This book was released on 2020-09-30 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticde use in agriculture and non-agriculture settings has increased dramatically over the last several decades. Concern about adverse effects on the environment and human health has spurred an enormous amount of research into their environmental behavior and fate. Pesticides in Surface Waters presents a comprehensive summary of this research. This book evaluates published studies that focus on measuring pesticide concentration. The studies chosen include peer reviewed scientific literature, government reports, laboratory studies, and those using microcosms and artificial streams and ponds. The authors used this information to develop their overview of pesticide contamination of surface waters. The exhaustive compilation of data along with the fundamental science make this book essential for those involved in pesticide use, environmental protection, water quality, and human or ecological risk assessment. Pesticides in Surface Waters covers the results of actual studies, sources of pesticides to surface water, fate and transport, and environmental significance. Hundreds of data-packed tables, maps, charts, and drawings illustrate the key points, making research and application easy and cost effective.

Book IMPACT OF CONCENTRATED FLOW PATHWAYS ON THE MOVEMENT OF PESTICIDES THROUGH AGRICULTURAL FIELDS

Download or read book IMPACT OF CONCENTRATED FLOW PATHWAYS ON THE MOVEMENT OF PESTICIDES THROUGH AGRICULTURAL FIELDS written by Joseph Chandler and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Riparian buffers are an important component of watershed management strategies aimed at improving water quality. These buffers are installed as best management practices (BMPs) to reduce runoff pollution from agricultural fields by diffusing surface runoff and allowing the water to percolate through the soil. They are well-documented to effectively mitigate nutrients and pesticides in agricultural runoff under ideal conditions. However, previous studies have shown that the performance of vegetated buffers can be undermined by the development of concentrated flow pathways (CFPs) that bypass the vegetation, limiting water quality benefits. To better understand the occurrence and potential effects of the presence of CFPs on the transport of pesticides from agricultural fields to nearby streams, soil samples were collected within CFPs and in adjacent areas outside of the CFPs in agricultural fields in Klingerstown, Pennsylvania. A total of nine sites representing various agricultural land uses, with two hay fields, two pasture fields and five cropland were studied. Soil samples were collected at a 0-2 cm depth to characterize pesticide concentrations in each of four categories of transport: CFPs within the field; non concentrated areas within the field; non concentrated areas in the associated riparian buffer zone (if present at the site); and, CFPs within the buffer. Samples were extracted using the QuEChERS (Quick, Easy, Cheap, Safe, Effective, Rugged, and Safe) solid phase extraction method for three pesticides of interest: atrazine, metolachlor, and imidacloprid, then analyzed using LC-MS. Concentrations of each of the analytes of interest in soil were compared within each site to understand differences within and outside of CFPs. This analysis showed that soils with highest concentrations of pesticides varied as a function of land use. Overall, the highest concentrations of atrazine, metolachlor, and imidacloprid in soil were found in one cropped study site: 3.4 ug/kg, 127 ug/kg, and 2085 ug/kg respectively. The lowest concentrations were found in the pasture and hay fields and were present in the samples below analytical method detection limits. The results of this study provided insights into the potential effects that CFPs may have on field-scale pesticide fate and transport, with two patterns emerging as dominant. Concentrations were found to either be mitigated or enhanced in CFPs of the field relative to the upslope non-concentrated flow areas of the field, with concentrations either decreasing or increasing along flow paths from the field to the stream. The sites that generally fell within the first pattern were cropland fields that have historically received all three pesticides as inputs. For those fields, the highest concentrations of each pesticide were generally found in the non-concentrated flow areas in the field itself, with concentrations lower in the CFPs in the field and lowest in the non-concentrated flow areas in te buffer. These results suggest that as the pesticides are transported across the field, they are mitigated prior to reaching the stream. In contrast, for the pasture and hay field sites, concentrations were generally were higher in the samples collected from the CFPs of the field locations than the non-concentrated flow areas of the field locations. This shift in trends demonstrated the impact of pesticide usage in upgradient cropland fields. Overall, the pesticide concentrations were consistently higher in the row cropland than the pasture and hay fields, and the patterns were generally consistent with land management (i.e., pesticide application history). For example, imidacloprid is often introduced to agricultural fields as a coating on corn and soybean seeds. It is not directly introduced into pasture and hay fields unless an imidacloprid-containing pesticide is applied by the farmer. The results of this study found that imidacloprid was nearly always absent from non-concentrated flow areas of the field samples collected in the pasture and hay fields, but that it was present in some of the CFPs of the fields. In these cases, the CFPs of the field were a result of CFPs starting in the upgradient cropland that contained imidacloprid. Therefore, the concentrations increased rather than decreased in the CFPs, suggesting that the presence of CFPs in these cases facilitates the transport of imidacloprid to the nearby streams.The results of this study highlight the importance of the underlying factors that caused the CFP to develop in determining which of the roles the CFP will play in pesticide transport (i.e., mitigation or enhancement). The majority of the CFPs identified in the study area appeared to be either erosional or groundwater driven. Erosional channels were likely caused from different factors, including biological (e.g., cattle crossings), anthropogenic (e.g., tractor usage) and topographical (e.g., swales). Many of the CFPs documented as part of this study appeared to have developed due to the presence of springs, with frequent movement of groundwater that originated from upgradient locations through the CFPs. In these cases, CFPs likely facilitated transport of pesticides that had not been applied in the adjacent field, but rather had been applied at upgradient fields and had leached into groundwater. For CFPs that were driven by biological and anthropogenic factors, pesticide concentrations decreased along the flow pathway, suggesting that pesticide concentrations were mitigated along the flow path as runoff traveled to a nearby stream. Overall, this study demonstrated that the role of CFPs in off-site pesticide loss is associated with a variety of factors, including: land use and land management practices, natural landscape factors, and pesticide physiochemical properties. The understanding of how these CFPs affect the transport of pesticides can help guide efforts to minimize pesticide loadings to local waterways. Specifically, CFPs appear to be important to pesticide transport in an agricultural setting and should be mitigated. Additionally, promoting awareness of the persistence of pesticides in agricultural soils could lead to farmers improving land management practices and local environmentalists modifying and utilizing different BMPs to reduce water-borne pesticide transport and improve soil health.

Book Review of the New York City Watershed Protection Program

Download or read book Review of the New York City Watershed Protection Program written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-12-04 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.

Book Pesticides in Surface Waters

Download or read book Pesticides in Surface Waters written by Steven J. Larson and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticde use in agriculture and non-agriculture settings has increased dramatically over the last several decades. Concern about adverse effects on the environment and human health has spurred an enormous amount of research into their environmental behavior and fate. Pesticides in Surface Waters presents a comprehensive summary of this research.