Assessing The Geomorphic Response Of The Wairoa Catchment To Post Settlement Land Use Changes
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Assessing The Geomorphic Response Of The Wairoa Catchment To Post Settlement Land Use Changes
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Author : Stephanie Benucci
language : en
Publisher:
Release Date : 2011
Assessing The Geomorphic Response Of The Wairoa Catchment To Post Settlement Land Use Changes written by Stephanie Benucci and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Landscape changes categories.
"Successful catchment-wide river management strategies require well informed decision making that builds upon appropriate understanding of how the cultural and physical history of a place creates the contemporary landscape. To comprehensively understand a natural system it is necessary to appreciate its' legacy, the formative processes at work, and the anthropogenic imprint. An appraisal of the environmental history of the Wairoa River, located within the wider Hunua Range Catchment of East Auckland, is used alongside field based analyses within a multiple lines of evidence approach, to understand the cultural and physical history of the Wairoa. River responses to human disturbance, and their manifestation through the catchment, are analyzed in relation to these patterns of River Styles. Marked differences in river environments are evident above and below the geological knick point afforded by the Hunua Falls in mid-catchment. Antecedent controls have exerted significant influence over the Wairoa River's ability to respond to external environmental disturbance. Since Maori and European arrival in the catchment (1769 and 1850 respectively) there has been an 80% reduction in native forest cover. Today, the catchment is comprised of pasture and exotic forestry. An initial pulse of fine-grained sediment was delivered to the valley floor following deforestation. However, this sediment has not been actively transferred downstream; rather, it has been stored within tributary valley fills. Aerial photographs and historical maps show no significant planform changes in channel positions over time. There is no evidence for substantive alterations to channel geometry, other than local adjustments induced by willows along the lower course of the river. This finding contrasts with many similarly disturbed catchments in New Zealand where high sediment yields have been generated by gullying and landslips. The lack of channel adjustment and sediment flux in the Wairoa Catchment is attributed to the fine-grained, cohesive nature of sediments on valley floors and the limited connectivity of this river system. The Hunua Falls induced base-level control in mid catchment, inducing low slopes in upstream areas. This has limited the degree of incision in upstream tributaries. Low stream power in conjunction with this disconnectivity has resulted in the Wairoa being unable to access and mobilise significant stores of sediment. Seemingly, streams in the Wairoa catchment are able to accommodate disturbance events. Subsequent to the Wairoas' initial post deforestation adjustment, disturbance events have not been of large enough magnitude to significantly impact the morphology of the receiving waterways. This study highlights the importance of catchment-scale and catchment-specific understandings of disturbance as a mechanism to achieve greater rehabilitation success through the application of locally grounded scientific understandings"--Abstract.
Decolonising Blue Spaces In The Anthropocene
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Author : Meg Parsons
language : en
Publisher: Springer Nature
Release Date : 2021
Decolonising Blue Spaces In The Anthropocene written by Meg Parsons and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Ecology categories.
This open access book crosses disciplinary boundaries to connect theories of environmental justice with Indigenous people's experiences of freshwater management and governance. It traces the history of one freshwater crisis - the degradation of Aotearoa New Zealand's Waipā River- to the settler-colonial acts of ecological dispossession resulting in intergenerational injustices for Indigenous Māori iwi (tribes). The authors draw on a rich empirical base to document the negative consequences of imposing Western knowledge, worldviews, laws, governance and management approaches onto Māori and their ancestral landscapes and waterscapes. Importantly, this book demonstrates how degraded freshwater systems can and are being addressed by Māori seeking to reassert their knowledge, authority, and practices of kaitiakitanga (environmental guardianship). Co-governance and co-management agreements between iwi and the New Zealand Government, over the Waipā River, highlight how Māori are envisioning and enacting more sustainable freshwater management and governance, thus seeking to achieve Indigenous environmental justice (IEJ). The book provides an accessible way for readers coming from a diversity of different backgrounds, be they academics, students, practitioners or decision-makers, to develop an understanding of IEJ and its applicability to freshwater management and governance in the context of changing socio-economic, political, and environmental conditions that characterise the Anthropocene. Meg Parsons is senior lecturer at the University of Auckland, New Zealand who specialises in historical geography and Indigenous peoples' experiences of environmental changes. Of Indigenous and non-Indigenous heritage (Ngāpuhi, Pākehā, Lebanese), Parsons is a contributing author to IPCC's Sixth Assessment of Working Group II report and the author of 34 publications. Karen Fisher (Ngāti Maniapoto, Waikato-Tainui, Pākehā) is an associate professor in the School Environment, University of Auckland, New Zealand. Aotearoa New Zealand. She is a human geographer with research interests in environmental governance and the politics of resource use in freshwater and marine environments. Roa Petra Crease (Ngāti Maniapoto, Filipino, Pākehā) is an early career researcher who employs theorising from feminist political ecology to examine climate change adaptation for Indigenous and marginalised peoples. Recent publications explore the intersections of gender justice and climate justice in the Philippines, and mātuaranga Māori (knowledge) of flooding.--
The Soils Of Aotearoa New Zealand
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Author : Allan E. Hewitt
language : en
Publisher: Springer Nature
Release Date : 2021-02-19
The Soils Of Aotearoa New Zealand written by Allan E. Hewitt and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-19 with Nature categories.
This book offers an introduction to the soils of Aotearoa New Zealand, structured according to the New Zealand soil classification system. Starting with an overview of the importance and distribution of New Zealand soils, it subsequently provides essential information on each of the 15 New Zealand soil orders in separate chapters. Each chapter, illustrated with diagrams and photographs in colour, includes a summary of the main features of the soils in the order, their genesis and relationships with landscapes, their key properties including examples of physical and chemical characteristics, and their classification, use, and management. The book then features a chapter on soils in the Ross Sea region of Antarctica and concludes by considering New Zealand soils in a global context, soil-formation pathways, and methods used in New Zealand to evaluate soils and assist in land-management decisions. Information about how to access detailed information via links to the Manaaki Whenua Landcare Research website is also included.
Managing Waterways On Farms
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Author :
language : en
Publisher:
Release Date : 2001
Managing Waterways On Farms written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Farm management categories.
Land Environments Of New Zealand
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Author : J. R. Leathwick
language : en
Publisher: Spotlight Poets
Release Date : 2003
Land Environments Of New Zealand written by J. R. Leathwick and has been published by Spotlight Poets this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Business & Economics categories.
This publication is the result of over 15 years' research and technology development and presents New Zealand and its environments in a completely new way.
Recent Research Reports
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Author :
language : en
Publisher:
Release Date : 1979
Recent Research Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Science categories.
Perspectives On Oceans Past
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Author : Kathleen Schwerdtner Máñez
language : en
Publisher: Springer
Release Date : 2016-05-24
Perspectives On Oceans Past written by Kathleen Schwerdtner Máñez and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-24 with Science categories.
Marine environmental history analyses the changing relationships between human societies and marine natural resources over time. This is the first book which deals in a systematic way with the theoretical backgrounds of this discipline. Major theories and methods are introduced by leading scholars of the field. The book seeks to encapsulate some of the major novelties of this fascinating new discipline and its contribution to the management, conservation and restoration of marine and coastal ecosystems as well as the cultural heritages of coastal communities in different parts of the world.
The Energetics Of Mangrove Forests
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Author : Daniel Alongi
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-01-18
The Energetics Of Mangrove Forests written by Daniel Alongi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-01-18 with Science categories.
Despite their importance in sustaining livelihoods for many people living along some of the world’s most populous coastlines, tropical mangrove forests are disappearing at an alarming rate. Occupying a crucial place between land and sea, these tidal ecosystems provide a valuable ecological and economic resource as important nursery grounds and breeding sites for many organisms, and as a renewable source of wood and traditional foods and medicines. Perhaps most importantly, they are accumulation sites for sediment, contaminants, carbon and nutrients, and offer significant protection against coastal erosion. This book presents a functional overview of mangrove forest ecosystems; how they live and grow at the edge of tropical seas, how they play a critical role along most of the world’s tropical coasts, and how their future might look in a world affected by climate change. Such a process-oriented approach is necessary in order to further understand the role of these dynamic forests in ecosystem function, and as a first step towards developing adequate strategies for their conservation and sustainable use and management. The book will provide a valuable resource for researchers in mangrove ecology as well as reference for resource managers.
Landslides Glissements De Terrain Volume 1
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Author : David H. Bell
language : en
Publisher: Taylor & Francis
Release Date : 1992
Landslides Glissements De Terrain Volume 1 written by David H. Bell and has been published by Taylor & Francis this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.
This volume contains papers on 5 general and 5 specialist themes. General themes include landslide investigations, stability analysis techniques, stabilization measures and hazard assessment. The specialist themes feature seismicity and landslides, landslides and reservoirs, and open-pit slopes.
Stream Stability At Highway Structures
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Author : U.s. Department of Transportation
language : en
Publisher: Createspace Independent Pub
Release Date : 2015-03-01
Stream Stability At Highway Structures written by U.s. Department of Transportation and has been published by Createspace Independent Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-01 with Technology & Engineering categories.
Approximately 500,000 bridges in the National Bridge Inventory (NBI) are built over streams. A large proportion of these bridges span alluvial streams that are continually adjusting their beds and banks. Many, especially those on more active streams, will experience problems with aggradation, degradation, bank erosion, and lateral channel shift during their useful life. The purpose of this document is to provide guidelines for identifying stream instability problems at highway stream crossings. Techniques for stream channel classification and reconnaissance, as well as rapid assessment methods for channel instability are summarized. Qualitative and quantitative geomorphic and engineering techniques useful in stream channel stability analysis are presented. This publication is an update of the third edition published in 2001. The HEC-20 manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluation of stream stability problems. Stream channel classification, stream reconnaissance techniques, and rapid assessment methods for channel stability are covered in detail. Quantitative techniques for channel stability analysis, including degradation analysis, are provided, and channel restoration concepts are introduced. Significant new material in this edition includes chapters on sediment transport concepts and channel stability in gravel bed streams, as well as expanded coverage of channel restoration concepts.