Three-dimensional morphometric measurements of reef corals using underwater photogrammetry techniques

被引：0
作者：
Bythell J. [1 ]
Pan P. [2 ]
Lee J. [3 ]
机构：
[1] Department of Marine Sciences and Coastal Management, University of Newcastle, Newcastle upon Tyne
[2] Department of Maritime Studies and International Transport, University College of Wales at Cardiff, Cardiff
[3] Virtually Unlimited, Kingskerswell, Devon, TQ12 5JH
来源：
Coral Reefs | 2001年 / 20卷 / 3期
基金：
英国自然环境研究理事会;
关键词：
3-D modeling; Coral surface area; Morphology; Photogrammetry;
D O I：
10.1007/s003380100157
中图分类号：
学科分类号：
摘要：
We describe a novel technical approach to accurately measure surface area and other morphological characteristics of corals and similar irregular objects from underwater photography. A standard Nikonos camera system was used with a slide-scanner to produce multiple overlapping images of the object. Photo-Modeler software was used to process the images and build a 3-D model of the object, which was subsequently analyzed using 3-D computer-aided design (CAD) packages. The accuracy of the technique was tested on irregularly shaped polystyrene models of known dimensions and on preserved coral skeletons. The technique was applied to the quantitative assessment of partial mortality in corals, but many applications are possible, including surface area measurements to standardize ecophysiological studies in the field and morphometric analyses. It represents the only noninvasive technique we are aware of for determining surface areas of large corals in the field. The most serious limitation of the technique is the time-consuming nature of the process, which increases with the complexity of the object and precludes many routine applications.
引用
收藏
页码：193 / 199
页数：6
相关论文
共 29 条
  • [1] Bak R.P.M., Meesters E.H., Coral population structure: The hidden information of colony size-frequency distributions, Mar Ecol Prog Ser, 162, pp. 301-306, (1998)
  • [2] Ben-Zion M., Achutiv Y., Stambler N., Dubinsky Z., A photographic computerized method for measurements of surface area in Millepora, Symbiosis, 10, pp. 115-121, (1991)
  • [3] Bruno J.F., Edmunds P.J., Metabolic consequences of phenotypic plasticity in the coral Madracis mirabilis (Duchassaing and Michelotti): The effect of morphology and water flow on aggregate respiration, J Exp Mar Biol Ecol, 229, pp. 187-195, (1998)
  • [4] Bythell J.C., Gladfelter E.H., Bythell M., Chronic and catastrophic natural mortality in three common Caribbean reef corals, Coral Reefs, 12, pp. 143-152, (1993)
  • [5] Done T.J., Photogrammetry in coral ecology: A technique for the study of change in coral communities, Proc 4th Int Coral Reef Symp, 2, pp. 315-320, (1981)
  • [6] Fagoonee I., Wilson H.B., Hassell M.P., Turner J.R., The dynamics of zooxanthellae populations: A long-term study in the field, Science, 283, pp. 843-845, (1999)
  • [7] Helmuth B.S.T., Timmerman B.E.H., Sebens K.P., Interplay of host morphology and symbiont microhabitat in coral aggregations, Mar Biol, 130, pp. 1-10, (1997)
  • [8] Hill M.S., Spongivory on Caribbean reefs releases corals from competition with sponges, Oecologia, 117, pp. 143-150, (1998)
  • [9] Hoegh-Guldberg O., A method for determining the surface area of corals, Coral Reefs, 7, pp. 113-116, (1988)
  • [10] Hoegh-Guldberg O., Williamson J., Availability of two forms of dissolved nitrogen to the coral Pocillopora damicornis and its symbiotic zooxanthellae, Mar Biol, 133, pp. 561-570, (1999)
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