Samperiz Ana, Sosdian Sindia, Hendy Erica, Johnson Kenneth, John Eleanor H, Jupiter Stacy D, Albert Simon
School of Earth and Environmental Sciences, Cardiff University, Cardiff, UK.
Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, USA.
Sci Rep. 2025 May 17;15(1):17172. doi: 10.1038/s41598-025-02283-6.
Nearshore reefs, at the interface of land-sea interactions, provide essential ecosystem services, but are susceptible to multiple global and local stressors. These stressors can detrimentally impact coral growth and the continuity of the reef framework. Here, we analyse coral growth records (1998 - 2016) of massive Porites spp. colonies from nearshore reefs in Fiji. Our aim is to assess the role of thermal stress and turbidity on coral growth across a range of environments. Our findings reveal a negative linear relationship between linear extension and seawater turbidity across locations (GLM, R = 0.42, p < 0.001), indicating that average coral growth is significantly influenced by local environmental conditions. On interannual timescales, all locations experienced a 14% to 30% decrease in linear extension in response to acute thermal stress during the 2013 - 2016 period. This finding highlights the existence of compounding effects between water quality and thermal stress. We suggest that inshore, long-lived massive hard corals in areas of high turbidity are more vulnerable to increasing SSTs due to an already reduced mean growth. Integrated management strategies in these regions that considers managing for multiple, interacting local stressors are warranted to enhance resilience.
近岸珊瑚礁处于陆海相互作用的界面,提供重要的生态系统服务,但易受多种全球和局部压力因素的影响。这些压力因素会对珊瑚生长和珊瑚礁框架的连续性产生不利影响。在此,我们分析了来自斐济近岸珊瑚礁的块状孔珊瑚属群体的珊瑚生长记录(1998 - 2016年)。我们的目的是评估热应力和浊度在一系列环境中对珊瑚生长的作用。我们的研究结果揭示了不同地点线性延伸与海水浊度之间的负线性关系(广义线性模型,R = 0.42,p < 0.001),表明平均珊瑚生长受到当地环境条件的显著影响。在年际时间尺度上,所有地点在2013 - 2016年期间因急性热应力导致线性延伸下降了14%至30%。这一发现凸显了水质和热应力之间复合效应的存在。我们认为,在高浊度地区的近岸长寿块状硬珊瑚由于平均生长已经降低,更容易受到海表温度上升的影响。在这些地区有必要采取综合管理策略,考虑应对多种相互作用的局部压力因素,以增强恢复力。