Download or read book A Comparison of Pixel Based and Object Based Vegetation Community Classification in the Arthur R Marshall Loxahatchee National Wildlife Refuge written by Dorianne M. Barone and published by . This book was released on 2008 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pixel based and object based vegetation community classification methods were performed using 30 meter spatial resolution Landsat satellite imagery of the Arthur R. Marshall Loxahatchee National Wildlife Refuge (Refuge), a remnant of the northern Everglades. Supervised classification procedures using maximum likelihood and parallelepiped algorithms were used to produce thematic maps with the following vegetation communities : wet prairie, sawgrass, cattail, tree island, brush, aquatic/open water. Spectral data, as well as NDVI, texture and principal component data were used to produce vegetation community classification maps. The accuracy levels of the thematic maps produced were calculated and compared to one another. The pixel based approach using the parallelepiped classification algorithm on the spectral and NDVI dataset had the highest accuracy level. A generalized form of this classification using only three vegetation communities (all wet prairie, tree island/brush and aquatic/open water) was compared to a previously published classification which used 1987 SPOT imagery in order to extract information on possible vegetation community transitions that are occurring within the Refuge. Results of the study indicate that 30 meter spatial resolution may be useful for understanding broad vegetation community trends but not species level trends. Pixel based procedures provide a more accurate classification than object based procedures for this landscape when using 30 meter imagery. Lastly, since 1987 there may be a trend of tree island/brush communities replacing wet prairie communities in the northern part of the Refuge and a transition to wet prairie communities in place of tree island/brush communities in the southern portion of the Refuge.
Download or read book Object based Vegetation Classification with High Resolution Remote Sensing Imagery written by Qian Yu and published by . This book was released on 2005 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Object Based Classification of Vegetation Communities from High Resolution Satellite Imagery of Heard Island written by Angela Joyce Bender and published by . This book was released on 2009 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mapping Wetland Vegetation with LiDAR in Everglades National Park Florida USA written by Georgia H. De Stoppelaire and published by . This book was released on 2014 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the geospatial distribution of vegetation is fundamental for resource management. The objective of this study is to investigate the possible use of airborne LIDAR (light detection and ranging) data to improve classification accuracy of high spatial resolution optical imagery and compare the ability of two classification algorithms to accurately identify and map wetland vegetation communities. In this study, high resolution imagery integrated with LIDAR data was compared jointly and alone; and the nearest neighbor (NN) and machine learning random forest (RF) classifiers were assessed in semi-automated geographic object-based image analysis (GEOBIA) approaches for classification accuracy of heterogeneous vegetation assemblages at Everglades National Park, FL, USA. Within the 145 ha study area, five dominant vegetation communities that establish the vegetation pattern were mapped: Subtropical hardwood forest, Slash pine with hardwoods, Pine savanna, Hardwood scrub, and Sawgrass. A LIDAR-derived canopy height model (CHM) was produced at 1 m spatial resolution and integrated with Digital Orthophoto Quarter-Quadrangle (DOQQ) optical imagery. Object-based segmentation was performed using the multi-resolution segmentation algorithm at optimal scale based on a global score. In a series of 42 experiments using the NN and RF classifiers, two data schemes were tested: fused data and optical imagery. Inclusion of additional first-order statistical features were also tested in the RF experiments. Results showed that the fused data produced significantly higher classification accuracy at the 95% confidence level than optical imagery alone in both sets of experiments. Among the classifiers, data schemes, and feature sets tested, the NN experiment using fused data with features of mean spectral values and mean CHM elevation values produced the highest overall accuracy (OA) of 83.6% and Kappa of 0.782, while the highest accuracy RF experiment produced an OA of 75.73% and Kappa of 0.695. Pairwise comparison of error matrices for the highest accuracy NN and RF experimental results were significantly different at the 95% confidence level with a Z score of 3.26. Findings show that the integration of LIDAR significantly improved classification accuracy of high spatial resolution optical imagery to identify and map wetland vegetation. Results from this study demonstrate fused LIDAR and high resolution imagery can be used to accurately map wetland vegetation assemblages in a repeatable, semi-automated GEOBIA approach.
Download or read book Snakes written by Stephen J. Mullin and published by Cornell University Press. This book was released on 2011-08-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destruction of habitat due to urban sprawl, pollution, and deforestation has caused population declines or even extinction of many of the world's approximately 2,600 snake species. Furthermore, misconceptions about snakes have made them among the most persecuted of all animals, despite the fact that less than a quarter of all species are venomous and most species are beneficial because they control rodent pests. It has become increasingly urgent, therefore, to develop viable conservation strategies for snakes and to investigate their importance as monitors of ecosystem health and indicators of habitat sustainability. In the first book on snakes written with a focus on conservation, editors Stephen J. Mullin and Richard A. Seigel bring together leading herpetologists to review and synthesize the ecology, conservation, and management of snakes worldwide. These experts report on advances in current research and summarize the primary literature, presenting the most important concepts and techniques in snake ecology and conservation. The common thread of conservation unites the twelve chapters, each of which addresses a major subdiscipline within snake ecology. Applied topics such as methods and modeling and strategies such as captive rearing and translocation are also covered. Each chapter provides an essential framework and indicates specific directions for future research, making this a critical reference for anyone interested in vertebrate conservation generally or for anyone implementing conservation and management policies concerning snake populations. Contributors: Omar Attum, Indiana University Southeast; Steven J. Beaupre, University of Arkansas; Xavier Bonnet, Centre National de la Recherche Scientifique; Frank T. Burbrink, College of Staten Island-The City University of New York; Gordon M. Burghardt, University of Tennessee; Todd A. Castoe, University of Colorado; David Chiszar, University of Colorado; Michael E. Dorcas, Davidson College; Lara E. Douglas, University of Arkansas; Christopher L. Jenkins, Project Orianne, Ltd.; Glenn Johnson, State University of New York at Potsdam; Michael Hutchins, The Wildlife Society; Richard B. King, Northern Illinois University; Bruce A. Kingsbury, Indiana University-Purdue University Fort Wayne; Thomas Madsen, University of Wollongong; Stephen J. Mullin, Eastern Illinois University; James B. Murphy, National Zoological Park; Charles R. Peterson, Idaho State University; Kent A. Prior, Parks Canada; Richard A. Seigel, Towson University; Richard Shine, University of Sydney; Kevin T. Shoemaker, College of Environmental Science and Forestry, State University of New York; Patrick J. Weatherhead, University of Illinois; John D. Willson, University of Georgia
Download or read book The South Florida Environment written by Benjamin F. McPherson and published by . This book was released on 1996 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The New New Deal written by Michael Grunwald and published by Simon and Schuster. This book was released on 2012-08-14 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a riveting account based on new documents and interviews with more than 400 sources on both sides of the aisle, award-winning reporter Michael Grunwald reveals the vivid story behind President Obama’s $800 billion stimulus bill, one of the most important and least understood pieces of legislation in the history of the country. Grunwald’s meticulous reporting shows how the stimulus, though reviled on the right and the left, helped prevent a depression while jump-starting the president’s agenda for lasting change. As ambitious and far-reaching as FDR’s New Deal, the Recovery Act is a down payment on the nation’s economic and environmental future, the purest distillation of change in the Obama era. The stimulus has launched a transition to a clean-energy economy, doubled our renewable power, and financed unprecedented investments in energy efficiency, a smarter grid, electric cars, advanced biofuels, and green manufacturing. It is computerizing America’s pen-and-paper medical system. Its Race to the Top is the boldest education reform in U.S. history. It has put in place the biggest middle-class tax cuts in a generation, the largest research investments ever, and the most extensive infrastructure investments since Eisenhower’s interstate highway system. It includes the largest expansion of antipoverty programs since the Great Society, lifting millions of Americans above the poverty line, reducing homelessness, and modernizing unemployment insurance. Like the first New Deal, Obama’s stimulus has created legacies that last: the world’s largest wind and solar projects, a new battery industry, a fledgling high-speed rail network, and the world’s highest-speed Internet network. Michael Grunwald goes behind the scenes—sitting in on cabinet meetings, as well as recounting the secret strategy sessions where Republicans devised their resistance to Obama—to show how the stimulus was born, how it fueled a resurgence on the right, and how it is changing America. The New New Deal shatters the conventional Washington narrative and it will redefine the way Obama’s first term is perceived.
Download or read book Tree Islands of the Everglades written by Fred H. Sklar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREFACE Within the Florida Everglades, tree islands, which cover only a small percentofthis ecosystem, historically have provided essential habitat for a wide variety ofterrestrial and amphibious plants, birds, and animals. These tree islands, however, have been one ofits least studied features. Because of their less flood tolerant vegetation, tree islands are one ofthe most sensitive components ofthe Everglades to changes in hydrology, and many tree islands have been lost during periods when water levels have been abnormally high or low. Their sensitivity to water level changes makes tree islands potentially one ofthe best and surest measures ofthe overall hydrologic health of the Everglades. Consequently, the maintenance of healthy, functioning tree islands and the restoration ofthose that have been lost will be an important performance measures that will be used tojudge the success ofthe Comprehensive Everglades Restoration Plan (CERP). A symposium, Tree Islands ofthe Everglades, was held on July 14 and 15, 1998 at Florida Atlantic University, Boca Raton, Florida. It was sponsored by Florida Center for Environmental Studies and the South Florida WaterManagement District. This was the first scientific meeting ever devoted to tree islands. The organizers of this symposium were Drs. Arnold van der Valk, Florida Center for Environmental Studies and Iowa State University, Fred Sklar, South Florida Water Management District, and Wiley Kitchens, United States Geological Survey.
Download or read book Earth Resources written by and published by . This book was released on 1975 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Priorities for GEOINT Research at the National Geospatial Intelligence Agency written by National Research Council and published by National Academies Press. This book was released on 2006-06-10 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Geospatial-Intelligence Agency (NGA) provides geospatial intelligence (GEOINT) to support national security, both as a national intelligence and a combat support agency. In the post-9/11 world, the need for faster and more accurate geospatial intelligence is increasing. GEOINT uses imagery and geospatial data and information to provide knowledge for planning, decisions, and action. For example, data from satellites, pilotless aircraft and ground sensors are integrated with maps and other intelligence data to provide location information on a potential target. This report defines 12 hard problems in geospatial science that NGA must resolve in order to evolve their capabilities to meet future needs. Many of the hard research problems are related to integration of data collected from an ever-growing variety of sensors and non-spatial data sources, and analysis of spatial data collected during a sequence of time (spatio-temporal data). The report also suggests promising approaches in geospatial science and related disciplines for meeting these challenges. The results of this study are intended to help NGA prioritize geospatial science research directions.
Download or read book Multicriteria Decision Analysis in Geographic Information Science written by Jacek Malczewski and published by Springer. This book was released on 2015-02-02 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for the GIS Science and Decision Science communities. It is primarily targeted at postgraduate students and practitioners in GIS and urban, regional and environmental planning as well as applied decision analysis. It is also suitable for those studying and working with spatial decision support systems. The main objectives of this book are to effectivley integrate Multicriteria Decision Analysis (MCDA) into Geographic Information Science (GIScience), to provide a comprehensive account of theories, methods, technologies and tools for tackling spatial decision problems and to demonstrate how the GIS-MCDA approaches can be used in a wide range of planning and management situations.
Download or read book Spatial Ecology and Conservation Modeling written by Robert Fletcher and published by Springer. This book was released on 2019-02-15 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a foundation for modern applied ecology. Much of current ecology research and conservation addresses problems across landscapes and regions, focusing on spatial patterns and processes. This book is aimed at teaching fundamental concepts and focuses on learning-by-doing through the use of examples with the software R. It is intended to provide an entry-level, easily accessible foundation for students and practitioners interested in spatial ecology and conservation.
Download or read book Geology of the Bighorn Mountains written by N. H. Darton and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EBOOK Meaning Making in Secondary Science Classroomsaa written by Eduardo Mortimer and published by McGraw-Hill Education (UK). This book was released on 2003-09-16 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the talk of science classrooms and in particular on the ways in which the different kinds of interactions between teachers and students contribute to meaning making and learning. Central to the text is a new analytical framework for characterising the key features of the talk of school science classrooms. This framework is based on sociocultural principles and links the work of theorists such as Vygotsky and Bakhtin to the day-to-day interactions of contemporary science classrooms. *presents a framework, based on sociocultural theory, for analysing the language of teaching and learning interactions in science classrooms *provides detailed examples and illustrations of insights gained from applying the framework to real science lessons in Brazil and the UK. *demonstrates how these ways of thinking about classroom talk can be drawn upon to inform the professional development of science teachers. *offers an innovative research methodology, based on sociocultural theory, for analysing classroom talk. *expands upon the ways in which sociocultural theory has been systematically applied to analysing classroom contexts. This book offers a powerful set of tools for thinking and talking about the day-to-day practices of contemporary science classrooms. It contains messages of fundamental importance and insight for all of those who are interested in reflecting on the interactions of science teaching and learning, whether in the context of teaching, higher degree study, or research.
Download or read book Untangling Complex Systems written by Pier Luigi Gentili and published by CRC Press. This book was released on 2018-09-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complex Systems are natural systems that science is unable to describe exhaustively. Examples of Complex Systems are both unicellular and multicellular living beings; human brains; human immune systems; ecosystems; human societies; the global economy; the climate and geology of our planet. This book is an account of a marvelous interdisciplinary journey the author made to understand properties of the Complex Systems. He has undertaken his trip, equipped with the fundamental principles of physical chemistry, in particular, the Second Law of Thermodynamics that describes the spontaneous evolution of our universe, and the tools of Non-linear dynamics. By dealing with many disciplines, in particular, chemistry, biology, physics, economy, and philosophy, the author demonstrates that Complex Systems are intertwined networks, working in out-of-equilibrium conditions, which exhibit emergent properties, such as self-organization phenomena and chaotic behaviors in time and space.
Download or read book Handbook of Conservation written by Mary Lathrop Tucker ("Mrs. F. H. Tucker, ") and published by . This book was released on 1911 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Land Use Land Cover and Soil Sciences written by Willy H. Verheye and published by . This book was released on 2009-11 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:
