Results 301 to 310 of about 30,195 (348)

GIS-based mapping of benthic habitats

Estuarine, Coastal and Shelf Science, 2003
The aim of the work was to map and analyse benthic habitats in the Polish zone of the Baltic Sea using the Geographical Information Systems (GIS). The habitats definitions were analogous to those proposed in the HELCOM classification, which is based on two concepts—the euphotic zone has no clearly defined boundaries and the bottom sediments are defined
J.A. Urbański, M. Szymelfenig
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Benthic habitat mapping using hyperspectral remote sensing

SPIE Proceedings, 2006
Benthic habitats are the different bottom environments as defined by distinct physical, geochemical, and biological characteristics. Remote sensing is increasingly being used to map and monitor the complex dynamics associated with estuarine and nearshore benthic habitats. Advantages of remote sensing technology include both the qualitative benefits
Miguel Vélez-Reyes, James A. Goodman, Alexey Castrodad-Carrau, Luis O. Jiménez-Rodriguez, Shawn D. Hunt, Roy Armstrong   +5 more
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Underwater Hyperspectral Imaging for seafloor and benthic habitat mapping

2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea), 2018
In this work, we present preliminary results of the first application in the Mediterranean Sea of a hyperspectral camera, a device commonly used for satellite or airborne remote sensing, adapted for the underwater environment. The spectral analysis was carried out on hyperspectral images acquired in two different environmental settings in the southern ...
Foglini F., Angeletti L., Bracchi V., Chimienti G., Grande V., Hansen I. M., Meroni A. N., Marchese F., Mercorella A., Prampolini M., Taviani M., Vertino A., Badalamenti F., Corselli C., Erdal I., Martorelli E., Savini A.   +16 more
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Benthic Habitat Mapping in the Tortugas Region, Florida

Marine Geodesy, 2003
Concern about declining trends in coral reef habitats and reef fish stocks in the Florida Keys contributed to the implementation of a network of no-take marine protected areas in 1997. In support of the efforts of the Dry Tortugas National Park and Florida Keys National Marine Sanctuary to implement additional no-take areas in the Tortugas region in ...
Franklin, E., Ault, Jerald, Smith, Steven G., Luo, Jiangang, Meester, G., Diaz, Guillermo A., Chiappone, Mark, Swanson, Dione W., Miller, Steven, Bohnsack, James A.   +9 more
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Benthic habitat mapping by autonomous underwater vehicles

2023
This work presents a functional system for performing unsupervised classification and mapping of benthic habitats using an autonomous underwater vehicle. Traditionally, tne-scale underwater mapping has been an expensive process, inaccurate, and is performed infrequently. This work provides contributions in three main areas: the control systems allowing
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Evaluation of classification techniques for benthic habitat mapping

SPIE Proceedings, 2012
The coral ecosystem is sensitive to environmental changes thus accurate, up to date information on their status is critical for effective management of these important marine resources. However, environments containing these habitats are challenging to map due to their remoteness, extent and costs of monitoring.
Aidy M. Muslim, T. Komatsu, D. Dianachia
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Benthic habitat mapping with acoustic seabed classification

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295), 2002
Thematic maps of acoustic diversity resulting from acoustical seabed classification surveys are usually presented as track lines of color-coded classes. These classes can later be calibrated using a bottom sampling system and, perhaps, underwater video or biological sampling.
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Traditional Ecological Knowledge and the mapping of benthic marine habitats

Journal of Environmental Management, 2013
Traditional Ecological Knowledge (TEK) is the empirically accumulated knowledge of local communities whose livelihoods depend directly on natural resources. TEK has a considerable potential as a reliable, rapid and low cost information source. However, its use for decision making in environmental management is frequently challenged due to the lack of ...
João Batista, Teixeira, Agnaldo Silva, Martins, Hudson Tercio, Pinheiro, Nelio Augusto, Secchin, Rodrigo, Leão de Moura, Alex Cardoso, Bastos   +5 more
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Mapping marine benthic habitats in Martinique (French West Indies)

Caribbean Journal of Science, 2010
Abstract. Several mapping techniques (aerial photography and acoustics) were combined to produce bathymetric and marine benthic habitats maps of Martinique (FWI). The eastern Atlantic coast is characterised by an outer spur and groove reef and inner lagoon system.
H. Legrand, P. Lenfant, I.S. Sotheran, R.L. Foster-Smith, R. Galzin, J-P. Maréchal   +5 more
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Toward adaptive benthic habitat mapping using gaussian process classification

Journal of Field Robotics, 2010
AbstractThis paper shows how existing methods of probabilistic least‐squares classification based on Gaussian processes can be used to construct a probabilistic representation of a habitat map using data collected by an autonomous underwater vehicle (AUV).
Paul Rigby, Oscar Pizarro, Stefan B. Williams   +2 more
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