Spatial variation in the dynamics and synchrony of coral reef communities in the US Virgin Islands
Spatial variation in the dynamics and synchrony of coral reef communities in the US Virgin Islands
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美属维尔京群岛珊瑚礁群落动态和同步性的空间变化
DOI：
10.1007/s00227-022-04048-5
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发表时间：
2022
期刊：
影响因子：
2.4
通讯作者：
Smith, Tyler B.
中科院分区：
文献类型：
--
作者：
Edmunds, Peter J.;Smith, Tyler B.
大多数热带珊瑚礁正在经历珊瑚覆盖率下降的情况，但对这种普遍性的解释因相隔 20-200 公里的珊瑚礁之间珊瑚覆盖率的空间变化而受到影响。本研究解决了美属维尔京群岛圣约翰（北纬 18° 18´ 37.04 ，西经 63° 43´ 23.17 ）和圣托马斯（北纬 18° 20´ 43.57 ，西经 65° 55´ 13.88 ）周围 12 个地点（深度 7–10 m）珊瑚礁的景观尺度变化。 2011 年至 2021 年完成的调查用于测试岛屿、海岸和地点之间群落动态的空间变化。群落同步性（φ）用于评估调节珊瑚群落变化的组合效应。从2011年到2021年，底栖群落的变化因地点和时间而异（即存在地点×年的相互作用），虽然有11个地点的珊瑚覆盖率下降，但圣托马斯周围的下降速度是圣约翰周围的2.6倍。珊瑚覆盖的丧失是由不同地点不同的多个类群造成的，从而揭示了对普遍条件的异步反应。异步性表明，某些地点的珊瑚群落有能力利用组合效应来调节稳定性，但这些效应并没有阻止反映岛屿规模现象的珊瑚覆盖率下降。在美属维尔京群岛，珊瑚死亡压垮了珊瑚群落的恢复能力，而这些珊瑚群落历来可能受益于投资组合效应。在珊瑚群落因分类灭绝而耗尽之前，如果环境挑战能够得到缓解，珊瑚群落组成的维持仍然有可能增强恢复能力。
Most tropical coral reefs are experiencing declining coral cover, yet interpretation of this generality is tempered by spatial variation in coral cover among reefs separated over 20–200 km. This study addresses such landscape scale variation in coral reefs at 12 sites (7–10 m depth) around St. John (18° 18´ 37.04 N, 63° 43´ 23.17 W) and St. Thomas (18° 20´ 43.57 N, 65° 55´ 13.88 W), US Virgin Islands. Surveys completed from 2011 to 2021 were used to test for spatial variation in community dynamics among islands, shores, and sites. Community synchrony (φ) was used to evaluate portfolio effects in mediating changes in coral communities. From 2011 to 2021, changes in benthic communities differed among sites and times (i.e., there were site × year interactions), and, while coral cover declined at 11 sites, the decline was 2.6-fold faster around St. Thomas than St. John. The loss of coral cover was driven by multiple taxa that differed among sites, thus revealing asynchronous responses to prevailing conditions. Asynchrony suggests that coral communities at some of the sites have the capacity to exploit portfolio effects to modulate stability, yet these effects did not prevent declines in coral cover that reflect island-scale phenomena. In the US Virgin Islands, coral death is overwhelming the capacity for resilience of coral communities that historically may have benefitted from portfolio effects. Until coral assemblages are depleted through taxonomic extirpation, maintenance of the assemblage composition retains the possibility that increased resilience might emerge if environmental challenges can be alleviated.
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影响因子：
4.6
作者：
Holbrook SJ;Adam TC;Edmunds PJ;Schmitt RJ;Carpenter RC;Brooks AJ;Lenihan HS;Briggs CJ
通讯作者：
Briggs CJ
1961 年 10 月 30 日至 31 日飓风哈蒂对英属洪都拉斯珊瑚礁和珊瑚礁的影响
影响因子：
--
作者：
D. Stoddart
通讯作者：
D. Stoddart
影响因子：
3.3
作者：
Edmunds PJ
通讯作者：
Edmunds PJ
对全球范围内广播产卵珊瑚的扩散和连通性进行建模
影响因子：
6.4
作者：
S. Wood;Claire B Paris;A. Ridgwell;E. Hendy
通讯作者：
E. Hendy
对海底群落的长期监测揭示了珊瑚礁干扰和恢复动态的空间决定因素
影响因子：
2.5
作者：
C. Moritz;S. Brandl;H. Rouzé;J. Vii;Gonzalo Pérez;P. Bosserelle;Y. Chancerelle;R. Galzin;V. Liao;G. Siu;M. Taiarui;M. Nugues;L. Hédouin
通讯作者：
L. Hédouin