2011
DOI: 10.3390/rs3050975
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Abstract: Eelgrass (Zostera marina) is a keystone component of inter-and sub-tidal ecosystems. However, anthropogenic pressures have caused its populations to decline worldwide. Delineation and continuous monitoring of eelgrass distribution is an integral part of understanding these pressures and providing effective coastal ecosystem management. A proposed tool for such spatial monitoring is remote imagery, which can cost-and time-effectively cover large and inaccessible areas frequently. However, to effectively apply t… Show more

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Cited by 32 publications
(33 citation statements)
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“…; Ventura et al., ), in temperate regions water clarity is a limiting factor in benthic habitat mapping (O'Neill et al. ) due to the presence of suspended material (organic detritus and inorganic sediments), phytoplankton, and CDOM causing reduced benthic visibility as is characterized by smaller Secchi depths (Babin et al., ; Dekker et al., ). When possible, mapping should be conducted during the lowest tides when turbidity levels are likely to be low (Fig.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…; Ventura et al., ), in temperate regions water clarity is a limiting factor in benthic habitat mapping (O'Neill et al. ) due to the presence of suspended material (organic detritus and inorganic sediments), phytoplankton, and CDOM causing reduced benthic visibility as is characterized by smaller Secchi depths (Babin et al., ; Dekker et al., ). When possible, mapping should be conducted during the lowest tides when turbidity levels are likely to be low (Fig.…”
Section: Discussionmentioning
confidence: 99%
“…While spectral similarity between eelgrass and other SAV species often results in mapping errors (Knudby & Norlund ; O'Neill et al. ; O'Neill and Costa ; Reshitnyk et al. ), textural characteristics present in the high spatial resolution UAS imagery may help distinguish between the two classes and improve mapping confidence in comparison to other remote sensing platforms (Bryson et al., ; Nahirnick et al.…”
Section: Discussionmentioning
confidence: 99%
“…Calibrating CASI atmospherically corrected spectra with the RAMSES measurements allowed us to get a reflectance peak that resembles the field data more. This method produced useable water spectra with characteristic features present in the reflectance spectra of different shallow water habitats [61,62]. At the same time, the calibration of WorldView-2 FLAASH corrected spectra with the RAMSES measurements did not provide considerable improvement.…”
Section: Discussionmentioning
confidence: 99%
“…Eelgrass is an ecologically important species that provides habitat and shelter for wildlife (Dumbauld et al, 1993;McDonald et al, 2001), and thus modeling the position and distribution of eelgrass meadows around Sidney Spit was deemed important. These meadows have already been mapped through previous research efforts using remote sensing techniques (O'Neill et al, 2011), and maps from this work were used as reference maps for placing eelgrass within the geovisualization. Heights of eelgrass blades were adjusted according to depth; that is, eelgrass in deeper areas were modeled with taller blades.…”
Section: Vegetationmentioning
confidence: 99%