scholarly journals Morphology and environment of cold-water coral carbonate mounds on the NW European margin

2006 ◽  
Vol 96 (1) ◽  
pp. 37-56 ◽  
Author(s):  
A. J. Wheeler ◽  
A. Beyer ◽  
A. Freiwald ◽  
H. de Haas ◽  
V. A. I. Huvenne ◽  
...  
Keyword(s):  
Cold Water ◽  
Carbonate Mounds ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic

Facies ◽  
2008 ◽  
Vol 54 (4) ◽  
pp. 621-621
Author(s):  
J. M. Roberts ◽  
L.-A. Henry ◽  
D. Long ◽  
J. P. Hartley
Keyword(s):  
Coral Reef ◽  
Cold Water ◽  
East Atlantic ◽  
Carbonate Mounds ◽  
North East ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Paleoseawater density reconstruction and its implication for cold-water coral carbonate mounds in the northeast Atlantic through time

2016 ◽  
Vol 31 (3) ◽  
pp. 365-379 ◽  
Author(s):  
Andres Rüggeberg ◽  
Sascha Flögel ◽  
Wolf-Christian Dullo ◽  
Jacek Raddatz ◽  
Volker Liebetrau
Keyword(s):  
Cold Water ◽  
Carbonate Mounds ◽  
Northeast Atlantic ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Semi-Automatic Versus Manual Mapping of Cold-Water Coral Carbonate Mounds Located Offshore Norway

2019 ◽  
Vol 8 (1) ◽  
pp. 40 ◽  
Author(s):  
Alexandra Jarna ◽  
Nicole J. Baeten ◽  
Sigrid Elvenes ◽  
Valérie K. Bellec ◽  
Terje Thorsnes ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Biological Diversity ◽  
Cold Water ◽  
Detailed Knowledge ◽  
Terrain Analysis ◽  
Visual Interpretation ◽  
Carbonate Mounds ◽  
Rule Based ◽  
Coral Carbonate ◽  
Water Coral

Cold-water coral reefs are hotspots of biological diversity and play an important role as carbonate factories in the global carbon cycle. Reef-building corals can be found in cold oceanic waters around the world. Detailed knowledge on the spatial location and distribution of coral reefs is of importance for spatial management, conservation and science. Carbonate mounds (reefs) are readily identifiable in high-resolution multibeam echosounder data but systematic mapping programs have relied mostly on visual interpretation and manual digitizing so far. Developing more automated methods will help to reduce the time spent on this laborious task and will additionally lead to more objective and reproducible results. In this paper, we present an attempt at testing whether rule-based classification can replace manual mapping when mapping cold-water coral carbonate mounds. To that end, we have estimated and compared the accuracies of manual mapping, pixel-based terrain analysis and object-based image analysis. To verify the mapping results, we created a reference dataset of presence/absence points agreed upon by three mapping experts. There were no statistically significant differences in the overall accuracies of the maps produced by the three approaches. We conclude that semi-automated rule-based methods might be a viable option for mapping carbonate mounds with high spatial detail over large areas.

scholarly journals The Moira Mounds, small cold-water coral banks in the Porcupine Seabight, NE Atlantic: Part A—an early stage growth phase for future coral carbonate mounds?

2011 ◽  
Vol 282 (1-2) ◽  
pp. 53-64 ◽  
Author(s):  
A.J. Wheeler ◽  
M. Kozachenko ◽  
L.-A. Henry ◽  
A. Foubert ◽  
H. de Haas ◽  
...  
Keyword(s):  
Growth Phase ◽  
Cold Water ◽  
Early Stage ◽  
Ne Atlantic ◽  
Carbonate Mounds ◽  
Porcupine Seabight ◽  
Coral Banks ◽  
Coral Carbonate ◽  
Water Coral

Microbial community composition and biogeochemical processes in cold-water coral carbonate mounds in the Gulf of Cadiz, on the Moroccan margin

2011 ◽  
Vol 282 (1-2) ◽  
pp. 138-148 ◽  
Author(s):  
Stefanie P. Templer ◽  
Laura M. Wehrmann ◽  
Yu Zhang ◽  
Crisogono Vasconcelos ◽  
Judith A. McKenzie
Keyword(s):  
Microbial Community ◽  
Community Composition ◽  
Cold Water ◽  
Microbial Community Composition ◽  
Biogeochemical Processes ◽  
Gulf Of Cadiz ◽  
Carbonate Mounds ◽  
Gulf Of Cádiz ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic

Facies ◽  
2008 ◽  
Vol 54 (3) ◽  
pp. 297-316 ◽  
Author(s):  
J. M. Roberts ◽  
L.-A. Henry ◽  
D. Long ◽  
J. P. Hartley
Keyword(s):  
Coral Reef ◽  
Cold Water ◽  
East Atlantic ◽  
Carbonate Mounds ◽  
North East ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Cold-water coral carbonate mounds as unique palaeo-archives: the Plio-Pleistocene Challenger Mound record (NE Atlantic)

2013 ◽  
Vol 73 ◽  
pp. 14-30 ◽  
Author(s):  
M. Thierens ◽  
E. Browning ◽  
H. Pirlet ◽  
M.-F. Loutre ◽  
B. Dorschel ◽  
...  
Keyword(s):  
Cold Water ◽  
Ne Atlantic ◽  
Carbonate Mounds ◽  
Coral Carbonate ◽  
Water Coral

scholarly journals Mapping of Cold-Water Coral Carbonate Mounds Based on Geomorphometric Features: An Object-Based Approach

2017 ◽  
Author(s):  
Markus Diesing ◽  
Terje Thorsnes
Keyword(s):  
Spatial Planning ◽  
Cold Water ◽  
Spatial Prediction ◽  
Marine Spatial Planning ◽  
Carbonate Mounds ◽  
Multibeam Echosounder ◽  
Continental Shelves ◽  
Object Based ◽  
Predicted Probability ◽  
Water Coral

Cold-water coral reefs are rich, yet fragile ecosystems found in colder oceanic waters. Knowledge of their spatial distribution on continental shelves, slopes, seamounts and ridge systems is vital for marine spatial planning and conservation. Cold-water corals frequently form conspicuous carbonate mounds of varying sizes, which are identifiable from multibeam echosounder bathymetry and derived geomorphometric attributes. However, the often large number of mounds makes manual interpretation and mapping a tedious process. We present a methodology that combines image segmentation and random forest spatial prediction with the aim to derive maps of carbonate mounds and an associated measure of confidence. We demonstrate our method based on multibeam echosounder data from Iverryggen on the mid-Norwegian shelf. We identified the image-object mean planar curvature as the most important predictor. The presence and absence of carbonate mounds is mapped with high accuracy (overall accuracy = 84.4%, sensitivity = 0.827 and specificity = 0.866). Spatially-explicit confidence in the predictions is derived from the predicted probability and whether the predictions are within or outside the modelled range of values and is generally high. We plan to apply the showcased method to other areas of the Norwegian continental shelf and slope where MBES data have been collected with the aim to provide crucial information for marine spatial planning.

Sign in / Sign up

Export Citation Format

Share Document