Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes
Structural complexity plays a key role in the functioning of coral reef ecosystems. Reef-building corals are major contributors to this complexity, providing shelter and food for numerous invertebrates and fish species. Both structural complexity and shelter capacity of reefscapes are determined by several components such as spurs and grooves, slope, caves and holes, vegetation and coral colonies. Quantifying the shelter capacity from coral colonies to reefscapes is a fundamental step to estimating ecosystem potential to support biodiversity. Here, we applied underwater photogrammetry to quantify shelter volumes provided by individual coral colonies. Overall, 120 3D models of coral colonies from branching, massive, columnar and tabular growth forms were studied. Three reefscapes were also 3D modeled. The study encompasses three Indo-Pacific Islands: Reunion, Europa and New Caledonia. At the colony level, measurements of diameter, planar area, surface and shelter volume were computed. At the reefscape, the diameter and planar area of each colony were extracted from orthomosaics and then used to estimate shelter capacity. Linear models had high accuracy for predicting shelter volume (a 3D metric) from 2D metrics: the diameter= 83.1%, R2= 0.95; the planar area= 87.5%, R2= 0.95 and the colony surface= 87.3%, R2= 0.96. The surface complexity and the shelter volume of the colonies allowed inferring the size of shelters provided by coral growth forms. Quantitative descriptors (i.e. relative percentage of shelter by growth form, the abundance of coral colonies, “Shannon-Shelter Index”) revealed reefscape-scale shelter differences. Our major finding is that planar area and diameter of coral colonies are satisfactory proxies for estimating shelter volume. These new proxies allow 2D metrics to quantify 3D shelter provision, which can support scientists and managers in conservation actions since such metrics are widely used in monitoring programs. Future investigations on the relationships between shelter provision and reef biodiversity will improve the understanding of these complex ecosystems.
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Language: | eng |
Subjects: | récif corallien, biodiversité, récif, corail, port de la plante, écosystème, http://aims.fao.org/aos/agrovoc/c_1880, http://aims.fao.org/aos/agrovoc/c_33949, http://aims.fao.org/aos/agrovoc/c_92343, http://aims.fao.org/aos/agrovoc/c_1882, http://aims.fao.org/aos/agrovoc/c_5969, http://aims.fao.org/aos/agrovoc/c_2482, http://aims.fao.org/aos/agrovoc/c_5155, http://aims.fao.org/aos/agrovoc/c_3081, |
Online Access: | http://agritrop.cirad.fr/605785/ http://agritrop.cirad.fr/605785/1/ID605785.pdf |
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dig-cirad-fr-6057852024-01-29T06:06:06Z http://agritrop.cirad.fr/605785/ http://agritrop.cirad.fr/605785/ Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes. Urbina-Barreto Isabel, Chiroleu Frédéric, Pinel Romain, Fréchon Louis, Mahamadaly Vincent, Elise Simon, Kulbicki Michel, Quod Jean-Pascal, Dutrieux Eric, Garnier Rémi, Bruggemann J. Henrich, Penin Lucie, Adjeroud Mehdi. 2021. Ecological Indicators, 121:107151, 12 p.https://doi.org/10.1016/j.ecolind.2020.107151 <https://doi.org/10.1016/j.ecolind.2020.107151> Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes Urbina-Barreto, Isabel Chiroleu, Frédéric Pinel, Romain Fréchon, Louis Mahamadaly, Vincent Elise, Simon Kulbicki, Michel Quod, Jean-Pascal Dutrieux, Eric Garnier, Rémi Bruggemann, J. Henrich Penin, Lucie Adjeroud, Mehdi eng 2021 Ecological Indicators récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 Nouvelle-Calédonie France http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 Structural complexity plays a key role in the functioning of coral reef ecosystems. Reef-building corals are major contributors to this complexity, providing shelter and food for numerous invertebrates and fish species. Both structural complexity and shelter capacity of reefscapes are determined by several components such as spurs and grooves, slope, caves and holes, vegetation and coral colonies. Quantifying the shelter capacity from coral colonies to reefscapes is a fundamental step to estimating ecosystem potential to support biodiversity. Here, we applied underwater photogrammetry to quantify shelter volumes provided by individual coral colonies. Overall, 120 3D models of coral colonies from branching, massive, columnar and tabular growth forms were studied. Three reefscapes were also 3D modeled. The study encompasses three Indo-Pacific Islands: Reunion, Europa and New Caledonia. At the colony level, measurements of diameter, planar area, surface and shelter volume were computed. At the reefscape, the diameter and planar area of each colony were extracted from orthomosaics and then used to estimate shelter capacity. Linear models had high accuracy for predicting shelter volume (a 3D metric) from 2D metrics: the diameter= 83.1%, R2= 0.95; the planar area= 87.5%, R2= 0.95 and the colony surface= 87.3%, R2= 0.96. The surface complexity and the shelter volume of the colonies allowed inferring the size of shelters provided by coral growth forms. Quantitative descriptors (i.e. relative percentage of shelter by growth form, the abundance of coral colonies, “Shannon-Shelter Index”) revealed reefscape-scale shelter differences. Our major finding is that planar area and diameter of coral colonies are satisfactory proxies for estimating shelter volume. These new proxies allow 2D metrics to quantify 3D shelter provision, which can support scientists and managers in conservation actions since such metrics are widely used in monitoring programs. Future investigations on the relationships between shelter provision and reef biodiversity will improve the understanding of these complex ecosystems. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/605785/1/ID605785.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.ecolind.2020.107151 10.1016/j.ecolind.2020.107151 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2020.107151 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.ecolind.2020.107151 |
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récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 |
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récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 Urbina-Barreto, Isabel Chiroleu, Frédéric Pinel, Romain Fréchon, Louis Mahamadaly, Vincent Elise, Simon Kulbicki, Michel Quod, Jean-Pascal Dutrieux, Eric Garnier, Rémi Bruggemann, J. Henrich Penin, Lucie Adjeroud, Mehdi Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
description |
Structural complexity plays a key role in the functioning of coral reef ecosystems. Reef-building corals are major contributors to this complexity, providing shelter and food for numerous invertebrates and fish species. Both structural complexity and shelter capacity of reefscapes are determined by several components such as spurs and grooves, slope, caves and holes, vegetation and coral colonies. Quantifying the shelter capacity from coral colonies to reefscapes is a fundamental step to estimating ecosystem potential to support biodiversity. Here, we applied underwater photogrammetry to quantify shelter volumes provided by individual coral colonies. Overall, 120 3D models of coral colonies from branching, massive, columnar and tabular growth forms were studied. Three reefscapes were also 3D modeled. The study encompasses three Indo-Pacific Islands: Reunion, Europa and New Caledonia. At the colony level, measurements of diameter, planar area, surface and shelter volume were computed. At the reefscape, the diameter and planar area of each colony were extracted from orthomosaics and then used to estimate shelter capacity. Linear models had high accuracy for predicting shelter volume (a 3D metric) from 2D metrics: the diameter= 83.1%, R2= 0.95; the planar area= 87.5%, R2= 0.95 and the colony surface= 87.3%, R2= 0.96. The surface complexity and the shelter volume of the colonies allowed inferring the size of shelters provided by coral growth forms. Quantitative descriptors (i.e. relative percentage of shelter by growth form, the abundance of coral colonies, “Shannon-Shelter Index”) revealed reefscape-scale shelter differences. Our major finding is that planar area and diameter of coral colonies are satisfactory proxies for estimating shelter volume. These new proxies allow 2D metrics to quantify 3D shelter provision, which can support scientists and managers in conservation actions since such metrics are widely used in monitoring programs. Future investigations on the relationships between shelter provision and reef biodiversity will improve the understanding of these complex ecosystems. |
format |
article |
topic_facet |
récif corallien biodiversité récif corail port de la plante écosystème http://aims.fao.org/aos/agrovoc/c_1880 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_92343 http://aims.fao.org/aos/agrovoc/c_1882 http://aims.fao.org/aos/agrovoc/c_5969 http://aims.fao.org/aos/agrovoc/c_2482 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Urbina-Barreto, Isabel Chiroleu, Frédéric Pinel, Romain Fréchon, Louis Mahamadaly, Vincent Elise, Simon Kulbicki, Michel Quod, Jean-Pascal Dutrieux, Eric Garnier, Rémi Bruggemann, J. Henrich Penin, Lucie Adjeroud, Mehdi |
author_facet |
Urbina-Barreto, Isabel Chiroleu, Frédéric Pinel, Romain Fréchon, Louis Mahamadaly, Vincent Elise, Simon Kulbicki, Michel Quod, Jean-Pascal Dutrieux, Eric Garnier, Rémi Bruggemann, J. Henrich Penin, Lucie Adjeroud, Mehdi |
author_sort |
Urbina-Barreto, Isabel |
title |
Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
title_short |
Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
title_full |
Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
title_fullStr |
Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
title_full_unstemmed |
Quantifying the shelter capacity of coral reefs using photogrammetric 3D modeling: From colonies to reefscapes |
title_sort |
quantifying the shelter capacity of coral reefs using photogrammetric 3d modeling: from colonies to reefscapes |
url |
http://agritrop.cirad.fr/605785/ http://agritrop.cirad.fr/605785/1/ID605785.pdf |
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