Download or read book Testing a New Tool to Delineate Valley Bottom Margins and Measure River Confinement in the Waip River Catchment New Zealand written by William Edward Marson and published by . This book was released on 2019 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging technologies provide remarkable capacity to generate insights into controls upon variability in geomorphic river form, in space and time. Accurate delineation of valley bottom margins (VBMs) and measurements of valley confinement are critical parts of this process. The Valley Bottom Extraction Tool (VBET) is more accurate than other recent GIS-based tools that apply simplistic catchment-scale assumptions and more comprehensive than those that are limited to reach-scale applications (Gilbert et al., 2016). Building on VBET, the Confinement Tool (CT) takes into consideration the channel position on the valley floor and quantifies its degree of confinement, and thus its ability to laterally adjust (O’Brien et al., 2019). This study assesses the performance of these tools in determining the variability of valley confinement in the diverse landscape settings of the Waipā River, a major tributary of the Waikato River on the North Island of Aotearoa New Zealand. Informed by nationally available datasets, CT outputs were compared to manually extracted measures of confinement, to examine how topographic signatures of differing landscape settings influence the effectiveness of these emerging technologies as tools to inform applications in river science and management. Despite a history of volcanic activity (at Mount Pirongia and atop the volcanic plateau), limestone terrains, and various dry or underfit streams incised into former fan and swamp deposits associated with the shifting alignment of the Waikato River post-Taupō eruption demanding unique tool inputs and variables for individual Waipā sub-catchments, the final outputs were consistent across spatial scales. However, with the overall average accuracy of the automated outputs falling below 30%, the quality and resolution of the underpinning data impede the tool’s ability to produce reliable results. This limits the tool’s usefulness to generalistic, broad-scale appraisals of landscape controls on river form and processes. Expert geomorphic insight is required to avoid misinterpretation of findings. The study highlights the limitations of New Zealand’s national datasets to conduct such analyses. Unless this database is updated, it will not be possible to meet the full potential of emerging technologies, negating their capacity to inform systematic management strategies across a range of scales.
Download or read book Using Emerging Technologies to Inform Catchment wide Analysis of Geomorphic River Change and Sensitivity of the Waip River Waikato New Zealand written by Nicole Anne Wheeler and published by . This book was released on 2019 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although geomorphic sensitivity is an important part of river science and management, few efforts have been made to consistently analyse the capacity for geomorphic adjustment at the catchment scale. Emerging technologies and remote sensing techniques are transforming our capacity to measure, monitor and interpret river change. This study uses a combination of theoretical frameworks and emerging techniques to examine cross-scalar channel adjustment and river sensitivity. In New Zealand’s Waikato region, the Waipā catchment has been transformed from a landscape dominated by native forest and wetlands to a landscape characterized by intensified agriculture. Anthropogenic activities have significantly modified channels and altered channel adjustment. A strong geologic imprint of volcanic material, karst landscapes and alluvial fan deposits also moderates contemporary geomorphic adjustment. This thesis examines catchment-scale capacity for adjustment and potential sensitivity using the River Styles Framework for 4th order channels and above within the five largest sub-catchments of the Waipā. Potential sensitivity rankings at the reach-scale are compared to observed channel adjustment using the Channel Migration Tool. Detailed examination of channel change is performed at two highly sensitive sites for the period from 1944-2018, using historic aerial photography, channel cross sectional surveys, Structure-from-Motion photogrammetry and Geomorphic Change Detection. Only a small proportion (3% of river length) of the Waipā catchment has significant capacity to adjust and is considered potentially highly sensitive to geomorphic adjustment. This reflects a significant imprint of bedrock, terrace and anthropogenic margin-control. High rates of adjustments are localized, restricted to partly confined planform-controlled or laterally unconfined alluvial reaches that are in high energy settings. In contrast to many other catchments in New Zealand, the Waipā catchment is considered to be a resilient system, with only localised reaches that are sensitive to change. Geomorphic adjustments at these sensitive sites reflect landscape history, climate and changes in riparian vegetation, as well as anthropogenic impacts of gravel extraction and channel stabilisation activities. This cross-scalar analysis of sensitivity identifies reaches that are more vulnerable to change. This provides valuable insights to support cost-effective proactive management and rehabilitation. Prospectively, such insights inform targeted applications of freedom space initiatives, supporting diverse habitat creation and ecological rehabilitation.
Download or read book Indigenous Data Sovereignty written by Tahu Kukutai and published by ANU Press. This book was released on 2016-11-14 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the global ‘data revolution’ accelerates, how can the data rights and interests of indigenous peoples be secured? Premised on the United Nations Declaration on the Rights of Indigenous Peoples, this book argues that indigenous peoples have inherent and inalienable rights relating to the collection, ownership and application of data about them, and about their lifeways and territories. As the first book to focus on indigenous data sovereignty, it asks: what does data sovereignty mean for indigenous peoples, and how is it being used in their pursuit of self-determination? The varied group of mostly indigenous contributors theorise and conceptualise this fast-emerging field and present case studies that illustrate the challenges and opportunities involved. These range from indigenous communities grappling with issues of identity, governance and development, to national governments and NGOs seeking to formulate a response to indigenous demands for data ownership. While the book is focused on the CANZUS states of Canada, Australia, Aotearoa/New Zealand and the United States, much of the content and discussion will be of interest and practical value to a broader global audience. ‘A debate-shaping book … it speaks to a fast-emerging field; it has a lot of important things to say; and the timing is right.’ — Stephen Cornell, Professor of Sociology and Faculty Chair of the Native Nations Institute, University of Arizona ‘The effort … in this book to theorise and conceptualise data sovereignty and its links to the realisation of the rights of indigenous peoples is pioneering and laudable.’ — Victoria Tauli-Corpuz, UN Special Rapporteur on the Rights of Indigenous Peoples, Baguio City, Philippines
Download or read book A Guide to Instream Habitat Survey Methods and Analysis written by I. G. Jowett and published by . This book was released on 2008-01-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dams Fish and Fisheries written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of free longitudinal passage of river fauna is stressed.
Download or read book Landscape and Quaternary Environmental Change in New Zealand written by James Shulmeister and published by Springer. This book was released on 2016-12-16 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together an overview of the recent geological history, active earth and biological processes and human settlement of New Zealand. Topics covered include the very active neotectonic and volcanic setting. Mountain geomorphic processes are examined and new ideas about landsliding are highlighted. The exceptional sedimentary archives of the Whanganui Basin are also presented. As one of two land masses that extend into the southern mid-latitudes, New Zealand is ideally located to investigate changes in Southern Ocean climate. Related to this, mountain glaciation in New Zealand is a focus in global climate change debates. New Zealand also has a unique biota due to its long isolation and is the last major land mass to be settled by people. Advances in DNA technologies have revolutionised our understanding of the histories and processes involved. The book provides a comprehensive review of existing work and highlights new ideas and major debates across all these fields.
Download or read book Limnogeology Progress Challenges and Opportunities written by Michael R. Rosen and published by Springer Nature. This book was released on 2021-04-24 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book honors the career of Professor Elizabeth Gierlowski-Kordesch who was a pioneer and leader in the field of limnogeology since the 1980s. Her work was instrumental in guiding students and professionals in the field until her untimely death in 2016. This collection of chapters was written by her colleagues and students and recognize the important role that Professor Gierlowski-Kordesch had in advancing the field of limnogeology. The chapters show the breadth of her reach as these have been contributed from virtually every continent. This book will be a primary reference for scientists, professionals and graduate students who are interested in the latest advances in limnogeologic processes and basin descriptions in North and South America, Europe, Africa, and China. *Free supplementary material available online for chapters 3,11,12 and 13. Access by searching for the book on link.springer.com
Download or read book Fundamentals of Urban Runoff Management written by Earl Shaver and published by . This book was released on 2007 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Flow 2012 written by Rafael Murillo Munoz and published by CRC Press. This book was released on 2012-10-05 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing the most recent theoretical accomplishments, numerical developments, experimental investigations and field studies in Fluvial Hydraulics, River Flow 2012 is an excellent resource for researchers, civil and environmental engineers, and practitioners in river-related disciplines.
Download or read book Nitrate Contamination written by Istvan Bogardi and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nitrate content of drinking water is rising at an alarming rate in several regions of NATO countries and elsewhere in the world. The increase is due to lack of proper sewage treatment, and primarily to excess fertilizer application. Also, eutrophication in several coastal areas is triggered by high nitrate concentrations. The main purpose of this book is to integrate scientific knowledge related to exposure assessment, health consequences and control of nitrate contamination in water. The motivation is related to the magnitude, the possible adverse health effects, and the high cost of control ling nitrate contamination. Future research tasks are defined by an interaction among hydro logists, toxicologists and environmental engineers in an integrated framework for nitrate risk management. The target readership of this book is a mix of university colleagues, practitioners from both the private and public sectors and advanced graduate students working with the hydrological, health science or environmental engineering aspects of nitrate contamination. The main conclusions include: 1. For risk assessment purposes, knowledge and sufficiently accurate models are available to predict nitrate load and its fate in water under changes in land use. 2. Once agricultural exposure controls are implemented, the response times in ground water may be so long as to make controls unrealistic. 3. It is still unknown whether agricultural best management practice is a compromise between nitrate risk reduction and agricultural revenue. 4. The current drinking water guidelines of 10 mg/L NOrN need not be changed.
Download or read book A Guide to Stream Habitat Analysis Using the Instream Flow Incremental Methodology written by Ken D. Bovee and published by . This book was released on 1982 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods to Study Litter Decomposition written by Manuel A.S. Graça and published by Springer Science & Business Media. This book was released on 2005-04-05 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this book is to provide students and laboratory instructors at universities and professional ecologists with a broad range of established methods to study plant litter decomposition. Detailed protocols for direct use in the field or laboratory are presented in an easy to follow step-by-step format. A short introduction to each protocol reviews the ecological significance and principles of the technique and points to key references.
Download or read book Submarine Mass Movements and their Consequences written by Geoffroy Lamarche and published by Springer. This book was released on 2015-10-02 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive collection of state-of-the-art studies of seafloor slope instability and their societal implications. The volume captures the most recent and exciting scientific progress made in this research field. As the world’s climate and energy needs change, the conditions under which slope instability occurs and needs to be considered, are also changing. The science and engineering of submarine – or more widely subaqueous – mass movements is greatly benefiting from advances in seafloor and sub-seafloor surveying technologies. Ultra-high-resolution seafloor mapping and 3D seismic reflection cubes are becoming commonly available datasets that are dramatically increasing our knowledge of the mechanisms and controls of subaqueous slope failure. Monitoring of slope deformation, repeat surveying and deep drilling, on the other hand, are emerging as important new techniques for understanding the temporal scales of slope instability. In essence, rapid advances in technology are being readily incorporated into scientific research and as a result, our understanding of submarine mass movements is increasing at a very fast rate. The volume also marks the beginning of the third IGCP project for the submarine mass movement research community, IGCP-640 S4SLIDE (Significance of Modern and Ancient Submarine Slope LandSLIDEs). The Submarine Mass Movements and Their Consequences symposium is the biannual meeting under the IGCP umbrella.
Download or read book Guidebook to Studies of Land Subsidence Due to Ground water Withdrawal written by Joseph Fairfield Poland and published by . This book was released on 1984 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Karst Management written by Philip E. van Beynen and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing specifically on the management of karst environments, this volume draws together the world’s leading karst experts to provide a vital source for the study and management of this unique physical setting. Although karst landscapes cover 12% of the Earth’s terrain and provide 25% of the world’s drinking water, the resource management of karst environments has only previously received indirect attention. Through a comprehensive approach, Karst Management focuses on engineering issues associated with surface karst such as quarries, dams, and agriculture, subsurface topics such as the management of groundwater, show caves, cave biota, and geo-archaeology projects. Chapters that focus on karst as an integrated system look at IUCN World Heritage sites, national parks, policy and regulation, measuring systematic disturbance, information management, and public environmental education. The text incorporates the most up-to-date research from leading karst scientists. This volume provides important perspectives for university students, educators, geoengineers, resource managers, and planners who are interested in or work with this unique physical landscape.
Download or read book New Zealand as Ecosystems written by Geoff Park and published by . This book was released on 2000 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wetlands Biodiversity and the Ramsar Convention written by A. J. Hails and published by . This book was released on 1996 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
