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首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Living on the edge: high-latitude Porites carbonate production under temperate eutrophic conditions
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Living on the edge: high-latitude Porites carbonate production under temperate eutrophic conditions

机译：生活在边缘：温带富营养条件下高纬度碳酸钙的生产

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摘要

Non-framework building high-latitude coral communities have recently received increased attention as a result of their potential to act as refugia during global change, as proxies for such change and for testing the environmental tolerance limits of various species of coral. In this study, we report on high-resolution in situ measured environmental factors influencing the development of monospecific (Porites panamensis) non-framework building coral communities and the resulting coral-derived carbonate sediment production in the northern Gulf of California, Mexico (Bahia de Los Angeles, 29 degrees N, 113 degrees E). Half-hourly measurements of temperature and chlorophyll a (a nutrient proxy) for a 1-year period indicate temperature extremes ranging from 14 degrees C to 30 degrees C, and average chlorophyll a values of 2.2 mg Chl a/m(3) (eutrophic). Even though P. panamensis only occur as small massive and encrusting colonies, they nonetheless show a significant carbonate sediment production potential (0.14 kg CaCO3/m(2)/year). A calculation of carbonate production rates vs amount of coral found in the sediment shows that this high-latitude community must have persisted for an extended period of time.
机译：非框架建筑的高纬度珊瑚群落最近因其在全球变化中充当避难所的潜力而受到越来越多的关注，作为这种变化的代名词和测试各种珊瑚的环境耐受极限的代表。在这项研究中，我们报告了高分辨率的原位测量环境因素，这些环境因素影响了加利福尼亚北部墨西哥湾（Bahia de）的单特异性（Porites panamensis）非框架建筑珊瑚群落的发展以及由此产生的源自珊瑚的碳酸盐沉积物洛杉矶，北纬29度，东经113度）。半小时内对温度和叶绿素a（一种营养替代物）的半小时测量表明温度极限范围为14摄氏度至30摄氏度，平均叶绿素a值为2.2 mg Chl a / m（3）（富营养）。即使P. panamensis仅以小的块状和结壳菌落的形式出现，它们仍显示出显着的碳酸盐沉积物生产潜力（0.14 kg CaCO3 / m（2）/年）。计算碳酸盐生产率与沉积物中发现的珊瑚数量之间的关系表明，该高纬度群落必须持续存在很长时间。

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