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.

中文翻译：

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驯化驱动珊瑚礁珊瑚钙化率的差异

珊瑚礁易受气候变化，人为影响和环境压力的影响。但是，夏威夷卡内奥赫湾的珊瑚已经反复显示出对人为引起的气温上升和漂白事件频率增加的适应能力和适应性。在马拉乌加边缘礁的两个地点（相距仅600 m），珊瑚和藻类的覆盖变化表明，地点之间的珊瑚复原力具有遗传或环境差异。进行了互惠移植实验，以确定主要的造礁物种Montipora capitata和Porites compressa是否钙化（线性延伸和骨骼干重），这在两个地点之间有所不同，是否由父母的殖民地或环境因素造成。尽管两个站点代表不同的环境条件，温度，盐度和文石饱和度之间存在显着差异，但站点和处理之间的人头分枝杆菌生长速率保持相同。然而，压缩假单胞菌的干骨骼重量增加在位点之间存在显着差异，但在不同处理之间没有显着差异，线性混合效应模型结果表明异位性是由位点与亲本菌落之间的环境差异驱动的。这些结果为M. capitata和P. compressa的复原力和适应能力提供了证据。弹性的变异可以通过局部调整，在一个小礁级规模的驱动P.牛鞭在Kāne'ohe湾。