Acclimatization Drives Differences in Reef-Building Coral Calcification Rates
Acclimatization Drives Differences in Reef-Building Coral Calcification Rates
复制标题
环境适应导致造礁珊瑚钙化率的差异
DOI：
--
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
K. Bahr
中科院分区：
文献类型：
--
作者：
K. Barnhill;Nadia Jogee;Colleen N. Brown;Ashley E. McGowan;K. Rodgers;I. Bryceson;K. Bahr
珊瑚礁易受气候变化、人为影响和环境压力的影响。然而，夏威夷Kāne Eschohe湾的珊瑚一再表现出对人工引起的温度上升和漂白事件频率增加的适应能力和适应能力。珊瑚和藻类覆盖在两个网站的变化-仅600米的差距-在Malauka的珊瑚礁边缘建议遗传或环境的差异，在珊瑚恢复力网站之间。一个互惠移植实验进行，以确定是否钙化（线性扩展和干骨骼重量）占主导地位的造礁物种，Montipora capitata和Porites compressa，两个网站之间的差异，是否或不母殖民地或环境因素负责的差异。尽管这两个地点代表了不同的环境条件，在温度、盐度和文石饱和度之间存在显著差异，但M。capitata的生长率在不同地点和处理之间保持不变。然而，在扁叶松的干骨骼重量的增加显着不同的网站之间，但不是跨处理，线性混合效应模型的结果表明异质性驱动的网站和母公司之间的环境差异。这些结果为M. capitata和P. compressa。弹性的变化可能是由当地的适应在一个小的，礁级规模的P. compressa在Kāne的Kāne-tagohe湾。
Coral reefs are susceptible to climate change, anthropogenic influence, and environmental stressors. However, corals in Kāneʻohe Bay, Hawaiʻi have repeatedly shown resilience and acclimatization to anthropogenically-induced rising temperatures and increased frequencies of bleaching events. Variations in coral and algae cover at two sites—just 600 m apart—at Malaukaʻa fringing reef suggest genetic or environmental differences in coral resilience between sites. A reciprocal transplant experiment was conducted to determine if calcification (linear extension and dry skeletal weight) for dominant reef-building species, Montipora capitata and Porites compressa, varied between the two sites and whether or not parent colony or environmental factors were responsible for the differences. Despite the two sites representing distinct environmental conditions with significant differences between temperature, salinity, and aragonite saturation, M. capitata growth rates remained the same between sites and treatments. However, dry skeletal weight increases in P. compressa were significantly different between sites, but not across treatments, with linear mixed effects model results suggesting heterogeneity driven by environmental differences between sites and the parent colonies. These results provide evidence of resilience and acclimatization for M. capitata and P. compressa. Variability of resilience may be driven by local adaptations at a small, reef-level scale for P. compressa in Kāneʻohe Bay.
影响因子：
16.6
作者：
Safaie A;Silbiger NJ;McClanahan TR;Pawlak G;Barshis DJ;Hench JL;Rogers JS;Williams GJ;Davis KA
通讯作者：
Davis KA