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Roelfsema, Christiaan M; Kovacs, Eva M; Phinn, Stuart R (2017): Georeferenced photographs of benthic photoquadrats acquired along 160 transects distributed over 23 reefs in the Cairns to Cooktown region of the Great Barrier Reef, January and April/May, 2017 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.877578

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Abstract:
Underwater georeferenced photo-transect surveys were conducted at different locations: in the shallow waters of the Reef Flat (0.5-2.5m) by a snorkeller, or, along a 5m depth contour of the Reef Slope by a diver. For these surveys, the snorkellers or divers traversed a pre-determined transect 250-1000 m in length, while taking photos of the benthos at a set height using a standard digital camera and towing a surface float GPS which was logging its track every five seconds. The camera lens provided a 1.0 m x 1.0 m footprint, at 0.5 m height above the benthos. Horizontal distance between photoquadrats was estimated by fin kicks of the surveyor, and corresponded to a surface distance of approximately 2.0 - 4.0 m.
The coordinates of each photoquadrat were approximated based on the timestamp of the photoquadrat and the GPS timestamp, using GPS Photo Link Software (www.geospatialexperts.com). Coordinates of each photoquadrat were interpolated by finding the GPS coordinates that were logged at a set time before and after the photoquadrat was captured.
Photoquadrats were collected with the purpose of determination of the benthic composition of each photoquadrat and to subsequently use this georeferenced field data for calibration and validation of benthic habitat maps. Transect location, direction and depth were chosen for this purpose and so as to characterise the variation in benthic cover types present on coral reefs. Photoquadrat interval along the transects was chosen to reflect the resolution of high spatial resolution satellite image data types.
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Related to:
Beijbom, Oscar; Edmunds, Peter J; Roelfsema, Christiaan M; Smith, Jennifer E; Kline, David I; Neal, Benjamin P; Dunlap, Matthew J; Moriarty, Vincent; Fan, Tung-Yung; Tan, Chih-Jui; Chan, Stephen; Treibitz, Tali; Gamst, Anthony; Mitchell, Brian G; Kriegman, David (2015): Towards automated annotation of benthic survey images: Variability of human experts and operational modes of automation. PLoS ONE, 10(7), e0130312, https://doi.org/10.1371/journal.pone.0130312
González-Rivero, Manuel; Beijbom, Oscar; Rodriguez-Ramirez, Alberto; Holtrop, Tadzio; González-Marrero, Yeray; Ganase, Anjani; Roelfsema, Christiaan M; Phinn, Stuart R; Hoegh-Guldberg, Ove (2016): Scaling up ecological measurements of coral reefs using semi-automated field image collection and analysis. Remote Sensing, 8(1), 30, https://doi.org/10.3390/rs8010030
Roelfsema, Christiaan M; Lyons, Mitchell B; Dunbabin, Matthew; Kovacs, Eva M; Phinn, Stuart R (2015): Integrating field survey data with satellite image data to improve shallow water seagrass maps: the role of AUV and snorkeller surveys? Remote Sensing Letters, 6(2), 135-144, https://doi.org/10.1080/2150704X.2015.1013643
Roelfsema, Christiaan M; Phinn, Stuart R (2010): Integrating field data with high spatial resolution multispectral satellite imagery for calibration and validation of coral reef benthic community maps. Journal of Applied Remote Sensing, 4(1), 043527, https://doi.org/10.1117/1.3430107
Roelfsema, Christiaan M; Phinn, Stuart R; Jupiter, Stacy D; Comley, James; Albert, Simon (2013): Mapping coral reefs at reef to reef-system scales, 10s–1000s km**2, using object-based image analysis. International Journal of Remote Sensing, 34(18), 6367-6388, https://doi.org/10.1080/01431161.2013.800660
Coverage:
Median Latitude: -16.325564 * Median Longitude: 145.904775 * South-bound Latitude: -17.810851 * West-bound Longitude: 145.403532 * North-bound Latitude: -15.041746 * East-bound Longitude: 146.595908
Date/Time Start: 2017-01-23T08:57:45 * Date/Time End: 2017-05-17T11:56:43
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
26 datasets

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Datasets listed in this publication series

  1. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from 15-043 Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877565
  2. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Adelaide Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-04). https://doi.org/10.1594/PANGAEA.877551
  3. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Boulder Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877552
  4. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Chinaman Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877553
  5. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Chinaman Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877554
  6. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Egret Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877555
  7. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Ellison Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877556
  8. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Ellison Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-04). https://doi.org/10.1594/PANGAEA.877557
  9. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Endeavour Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877558
  10. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Farquharson Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877559
  11. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Gilbey Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877560
  12. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Hastings Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877561
  13. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Lark Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877562
  14. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Opal Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877563
  15. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Oyster Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877564
  16. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Pasco Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877566
  17. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Pickersgill Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877567
  18. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Potter Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-04). https://doi.org/10.1594/PANGAEA.877568
  19. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Ribbon 3 Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877569
  20. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Ribbon 5 Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877570
  21. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Sudbury Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-04). https://doi.org/10.1594/PANGAEA.877571
  22. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Thetford Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-04). https://doi.org/10.1594/PANGAEA.877572
  23. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Tongue Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877573
  24. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Undine Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877574
  25. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Vicki Harriott Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-01). https://doi.org/10.1594/PANGAEA.877575
  26. Roelfsema, CM; Kovacs, EM; Phinn, SR (2017): Georeferenced photographs of benthic photoquadrats acquired along transects from Vicki Harriott Reef in the Cairns to Cooktown region of the Great Barrier Reef (2017-05). https://doi.org/10.1594/PANGAEA.877576