GBR - Coral calcification, 1672 - 2005 (MTSRF 1.1.5, AIMS)

The purpose of this study was to quantify patterns in skeletal density, linear extension and calcification throughout the GBR based on the AIMS Coral Core Archive of 328 colonies of massive Porites from 69 reefs. Annual data for the three growth parameters, skeletal density, annual extension, and calcification rate (the product of skeletal density and annual extension) were obtained from each colony using standard x-ray and gamma densitometry techniques. The data set contains 16,472 annual records, with corals ranging 10 – 436 years in age, most of which were collected in two periods covering 1983 – 1992 and 2002 – 2005. The oldest colony dates back to 1672.

As part of the Reef Atlas project (now the eAtlas) the calcification observations were interpolated over the whole GBR by Glenn De'ath using Generalized Additive Models. This produced a gridded version of the dataset and is available as a KML. For the original data contact Janice Lough.

Data Units:

Skeletal density: g / cm^3; Annual extension: cm / yr; Calcification: g / cm^2 / yr.

References:

- De'ath G, Lough JM, Fabricius KE (2009) Declining coral calcification on the Great Barrier Reef. Science 323: 116-119
- Cooper TF, De'ath G, Fabricius KE, Lough JM (2008). Declining coral calcification on the Great Barrier Reef. Global Change Biology 14: 529–538
- Lough JM, Barnes DJ (2000) Environmental controls on growth of the massive coral Porites. Journal of Experimental Marine Biology and Ecology 245: 225-243

本研究旨在基于澳大利亚海洋科学研究所（AIMS）珊瑚岩心档案库，对大堡礁（GBR）全域的骨骼密度、线性延伸速率与钙化率模式开展量化分析，该档案库涵盖来自69个礁体的328株块状多孔珊瑚（massive Porites）样本。通过标准X射线与伽马密度测定技术，从每株珊瑚样本中获取三项生长参数的年度数据：骨骼密度、年度延伸率，以及钙化率（即骨骼密度与年度延伸率的乘积）。本数据集共计16472条年度记录，珊瑚样本的树龄跨度为10至436年，其中绝大多数样本采集于1983—1992年与2002—2005年两个时段，最古老的样本可追溯至1672年。

作为珊瑚礁地图集项目（现为eAtlas）的组成部分，Glenn De'ath利用广义加性模型（Generalized Additive Models）对大堡礁全域的钙化观测数据进行空间插值，生成了该数据集的网格化版本，可通过KML格式获取。如需获取原始数据，请联系Janice Lough。

数据单位：
骨骼密度：g/cm³（克/立方厘米）；年度延伸率：cm/yr（厘米/年）；钙化率：g/cm²/yr（克/平方厘米/年）。

参考文献：
- De'ath G, Lough JM, Fabricius KE (2009) 大堡礁珊瑚钙化率下降. 《科学》（Science）323: 116-119
- Cooper TF, De'ath G, Fabricius KE, Lough JM (2008) 大堡礁珊瑚钙化率下降. 《全球变化生物学》（Global Change Biology）14: 529–538
- Lough JM, Barnes DJ (2000) 块状多孔珊瑚生长的环境调控因子. 《实验海洋生物学与生态学杂志》（Journal of Experimental Marine Biology and Ecology）245: 225-243

搜集汇总

背景与挑战

背景概述

该数据集涵盖1672年至2005年大堡礁珊瑚钙化记录，基于来自69个礁区的328个大型Porites珊瑚群体，包含16,472条年度数据，测量了骨骼密度、线性延伸和钙化率等参数。数据集通过插值方法提供网格化版本，用于研究珊瑚生长变化，并支持相关科学出版物分析大堡礁钙化下降趋势。