Results 261 to 270 of about 30,151 (305)

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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Automatic Benthic Habitat Mapping using Inexpensive Underwater Drones

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
The generation of benthic habitat maps relies either on direct in-situ observations made by SCUBA divers swimming in a rectilinear fashion, or on costly remote sensing techniques involving either ROVs or sonar technology. The recent commercialisation of off-the-shelf underwater drones has enhanced benthic mapping possibilities by providing a cost ...
Adam Gauci, Alan Deidun, John Abela, Ernest Cachia, Sean Dimech   +4 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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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 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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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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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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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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Guidance for benthic habitat mapping: an aerial photographic approach

2021
This document, Guidance for Benthic Habitat Mapping: An Aerial Photographic Approach, describes proven technology that can be applied in an operational manner by state-level scientists and resource managers. This information is based on the experience gained by NOAA Coastal Services Center staff and state-level cooperators in the production of a series
Finkbeiner, Mark, Stevenson, Bill, Seaman, Renee   +2 more
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ACOUSTIC IMAGERY FOR BENTHIC HABITATS MAPPING AND MONITORING

2010
Some shallow subtidal marine benthic habitats cannot be well mapped using classical remote sensing techniques such as satellite imagery or aerial photographs. Conversely, sidescan sonar is a very useful tool for mapping subtidal benthic features and monitoring some threatened habitats over small or large areas.
Fournier, J., Baltzer, Agnès, Godet, L., Panizza, Andrea   +3 more
openaire   +1 more source