Download or read book Submerged aquatic vegetation data development and applied uses written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earth System Monitor written by and published by . This book was released on 2001 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Delineation and Classification of Submerged Aquatic Vegetation SAV Using SPOT Satellite Multispectral Digital Data written by K. Peter Lade and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Novel Advances in Aquatic Vegetation Monitoring in Ocean Lakes and Rivers written by Monica Rivas Casado and published by MDPI. This book was released on 2019-08-22 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, there has been an increase in the development of strategies for water ecosystem mapping and monitoring. Overall, this is primarily due to legislative efforts to improve the quality of water bodies and oceans. Remote sensing has played a key role in the development of such approaches—from the use of drones for vegetation mapping to autonomous vessels for water quality monitoring. Within the specific context of vegetation characterization, the wide range of available observations—from satellite imagery to high-resolution drone aerial imagery—has enabled the development of monitoring and mapping strategies at multiple scales (e.g., micro- and mesoscales). This Special Issue, entitled “Novel Advances in Aquatic Vegetation Monitoring in Ocean, Lakes and Rivers”, collates recent advances in remote sensing-based methods applied to ocean, river, and lake vegetation characterization, including seaweed, kelp, submerged and emergent vegetation, and floating-leaf and free-floating plants. A total of six manuscripts have been compiled in this Special Issue, ranging from area mapping substrates in riverine environments to the identification of macroalgae in marine environments. The work presented leverages current state-of-the-art methods for aquatic vegetation monitoring and will spark further research within this field.

Download or read book Coastal Services written by and published by . This book was released on 2001 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geographic Information Systems in Oceanography and Fisheries written by Vasilis D. Valavanis and published by CRC Press. This book was released on 2002-05-23 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last two decades there has been increasing recognition that problems in oceanography and fisheries sciences and related marine areas are nearly all manifest in the spatio-temporal domain. Geographical Information Systems (GIS), the natural framework for spatial data handling, are being recognized as powerful tools with useful applications

Download or read book Development of Submerged Aquatic Vegetation Monitoring Protocols in North Carolina written by W. Judson Kenworthy and published by . This book was released on 2012 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 1999 written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 1998 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chesapeake Bay Submerged Aquatic Vegetation Habitat Requirements and Restoration Target written by and published by . This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Submerged Aquatic Vegetation on Water Quality in Cache Slough Complex Sacramento San Joaquin Delta written by Xun Cai and published by . This book was released on 2018 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Submerged aquatic vegetation (SAV) plays a significant role in many aquatic systems, and impacts both physical and ecological quantities. It can baffle currents, attenuate waves, recycle nitrogen and phosphorus from the sediment bed, perform ecosystem function as a primary producer, and provide critical habitat for many aquatic species. Conversely, the invasive SAV, Egeria densa (Brazilian waterweed), in the San Francisco Bay & Delta has been a nuisance since its introduction into the system in the 1960s. It has displaced most of the native submersed aquatic plant species in the Delta and restructured the ecosystem, thus threatening the survival of several endangered native fishes such as Delta Smelt. Its impacts on the ecological system remain largely unknown and the need for assessment is growing. This multi-interdisciplinary study, incorporating biogeochemistry, hydrodynamics, and numerical computing and field survey data, accomplishes two main goals. The first goal is to develop a new SAV model imbedded into the unstructured-grid SCHISM-ICM framework. in addition to the advantages of directly simulating the SAV impact on hydrodynamics using high-resolution unstructured grids, this new SAV model can also simulate the competition between SAV and phytoplankton for light and nutrient supplies. The second goal is to apply the new model to Cache Slough Complex, Sacramento-San Joaquin Delta, to estimate the impact on the water quality from intervening SAV removal. Removal of SAV is already being studied in Little Hastings Tract and this study can serve to develop hypotheses for monitoring and ultimately guidance for managing SAV removal in the Bay-Delta region. We benchmark the new SAV model with the tests on the SAV biomass, growth and impacts on light supply and nutrient budget in the water column and sediment bed, respectively. Starting from a uniform biomass distribution, we simulate the evolution of biomass over seasonal scales and validate the calculated distribution with the observed distribution. The model is able to successfully simulate the SAV die-off process in areas where it is known to be unable to colonize. By applying the fully coupled SCHISM-ICM-SAV model in the Cache Slough Complex area, the changes of the water quality state variables due to SAV are estimated over spatial and seasonal scales. Generally, SAV increases the accumulation of phytoplankton by locally reducing flushing and thus increasing the residence time, but in the meantime, reduces its local growth rate due to light shading and nutrient competition. A combination of direct impact from SAV and indirect impact through changed phytoplankton results in changes in other water quality variables: dissolved oxygen and nutrients. SAV tends to increase oxygen and organic nutrients while decreasing inorganic nutrients. For this system, the feedback loop from SAV to the hydrodynamics plays the most important role in the water quality variables among all feedback loops.

Download or read book Bio optical Modeling and Remote Sensing of Inland Waters written by Deepak R. Mishra and published by Elsevier. This book was released on 2017-04-28 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bio-optical Modeling and Remote Sensing of Inland Waters presents the latest developments, state-of-the-art, and future perspectives of bio-optical modeling for each optically active component of inland waters, providing a broad range of applications of water quality monitoring using remote sensing. Rather than discussing optical radiometry theories, the authors explore the applications of these theories to inland aquatic environments. The book not only covers applications, but also discusses new possibilities, making the bio-optical theories operational, a concept that is of great interest to both government and private sector organizations. In addition, it addresses not only the physical theory that makes bio-optical modeling possible, but also the implementation and applications of bio-optical modeling in inland waters. Early chapters introduce the concepts of bio-optical modeling and the classification of bio-optical models and satellite capabilities both in existence and in development. Later chapters target specific optically active components (OACs) for inland waters and present the current status and future direction of bio-optical modeling for the OACs. Concluding sections provide an overview of a governance strategy for global monitoring of inland waters based on earth observation and bio-optical modeling. Presents comprehensive chapters that each target a different optically active component of inland waters Contains contributions from respected and active professionals in the field Presents applications of bio-optical modeling theories that are applicable to researchers, professionals, and government agencies

Download or read book An Examination of the Potential and Limitations of Optical Remote Sensing in Monitoring Submerged Aquatic Vegetation written by Gillian Rowan and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Aquatic vegetation is a critical component of freshwater ecosystems, providing habitat for small fish and invertebrates, stabilizing sediments, altering flow regimes, and improving water quality. Vegetation communities are, however, facing new and escalating pressures due to climate change and increased human disturbances. Monitoring and managing these ecosystems are therefore vital if the services aquatic plants afford are to be maintained. Remote sensing has been suggested as a preferred method to monitor these habitats, but the technology hasn't yet seen extensive implementation particularly to submerged aquatic vegetation (SAV) in the freshwater context. The goal of this thesis is to facilitate the application of remote sensing techniques to SAV monitoring through both information transfer and filling in foundational knowledge gaps in the field. A systematic literature review was conducted of previous work in SAV monitoring using remote sensing, which was synthesized with relevant general principles of remote sensing, to create a resource for ecosystem managers and ecological researchers unfamiliar with the discipline. This resource provides an overview of all aspects of a typical optical remote sensing workflow, concentrating on applications to SAV monitoring, to instruct non-specialists in whether and how to adopt remote sensing as a research method. The majority of previous work focused on coastal systems and primarily on determining community extent. While these applications did produce moderate to good results, the narrow scope of the data precludes many critical ecosystem management and research questions from being answered. For this reason, original research was undertaken to implement optical remote sensing techniques to a larger range of targets in a non-ideal (i.e., freshwater) environment. This work assessed the spectral separability of targets under laboratory conditions at various grouping levels (i.e., species to kingdom, vegetation/non-vegetation), under multiple sampling conditions, and modelled across spectral resolutions. In situ imagery was additionally analyzed to compare the expected modelled accuracy to what is possible under field conditions. Samples from thirteen species of SAV were collected across two seasons and were found to be spectrally separable (leave-one-out nearest neighbour criterion of 0.8 to 1 depending on grouping) during the peak of the growing season. Spectral separability depended directly on the spectral resolution and number of bands of the sensor chosen. Airborne hyperspectral imagery was effective with individual class recall of up to 100%, and overall recalls of 88% and 94% when detecting vegetation types and between vegetation or non-vegetation, respectively. Image analysis was limited to targets of canopy-forming or carpeting vegetation and large unvegetated patches due to the ~ 1 m spatial resolution. The targets present in this freshwater ecosystem would be conducive to mapping and monitoring using remote sensing techniques, however, imagery of the spatial and spectral resolution required for such applications is expensive and not widely available. Development of targeted and sufficiently high-spatial resolution sensors aboard space-borne platforms should therefore be prioritized if aquatic vegetation is to be effectively monitored at the regional to global scales"--

Download or read book Remote Sensing of Wetlands written by Ralph W. Tiner and published by CRC Press. This book was released on 2015-03-23 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effectively Manage Wetland Resources Using the Best Available Remote Sensing TechniquesUtilizing top scientists in the wetland classification and mapping field, Remote Sensing of Wetlands: Applications and Advances covers the rapidly changing landscape of wetlands and describes the latest advances in remote sensing that have taken place over the pa

Download or read book Satellite Remote Sensing of Submerged Aquatic Vegetation Distribution and Status in the Currituck Sound NC written by Stacy A. C. Nelson and published by . This book was released on 2013 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Information and Status Report of the Office of Research and Development s Research on Coastal Submerged Aquatic Vegetation SAV written by David A. Flemer and published by . This book was released on 1992 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aquaphyte written by and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.