Evaluating the precariousness of coral recovery when coral and macroalgae are alternative basins of attraction

Evaluating the precariousness of coral recovery when coral and macroalgae are alternative basins of attraction
复制标题

当珊瑚和大型藻类是替代吸引盆地时,评估珊瑚恢复的不稳定程度

DOI:
10.1002/lno.11929
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发表时间:
2022
影响因子:
4.5
通讯作者:
Adam, Thomas C.
Adam, Thomas C.
中科院分区:
地球科学1区
文献类型:
--
作者:
Schmitt, Russell J.;Holbrook, Sally J.;Brooks, Andrew J.;Adam, Thomas C.

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当珊瑚和大型藻类是替代吸引物时,在一次重大干扰之后,底栖生物群落的轨迹部分取决于食草动物是否抑制大型藻类,使珊瑚礁表面处于适合珊瑚殖民的状态。由于大型藻类往往比珊瑚更快地定居,一个重要的问题是环境食草动物与大型藻类失去控制的水平有多接近,即珊瑚入侵状态相对于大型藻类的转换点的不稳定性。在法属波利尼西亚的Moorea,以大型藻类Turbinaria ornata为主的珊瑚礁在多次种群更替中保持不变,而通过模拟脉冲干扰去除Turbinaria的珊瑚礁在整个5年的研究中仍然没有大型藻类。野外实验表明,大型藻类是无法增殖干扰珊瑚礁,直到环境草食动物减少了50%以上。珊瑚入侵状态的低不稳定性有助于逐渐过渡到珊瑚群落,因为它允许珊瑚有足够的时间重新繁殖。珊瑚在受干扰的珊瑚礁上的积累是未受干扰的Turbinaria为主的珊瑚礁的3.5倍。珊瑚入侵状态的长期持续性是由高丰度的食草动物促进的,这些食草动物阻止了大型藻类的建立,而Turbinaria占主导地位的状态的持续性反映了消耗成熟大型藻类的食草动物的稀缺性。通过揭示促进珊瑚和大型藻类状态的双稳态的过程,我们的工作有助于解释莫雷阿岛和其他地方的珊瑚礁群落所表现出的丰富的动态行为。
When coral and macroalgae are alternative attractors, the trajectory of the benthic community following a major disturbance is shaped in part by whether herbivores keep macroalgae suppressed, leaving reef surfaces in a state suitable for coral colonization. Because macroalgae tend to colonize much faster than coral, an important issue is how close ambient herbivory is to the level where control of macroalgae is lost, that is, the precariousness of the coral‐invasible state relative to the switch‐point to macroalgae. In Moorea, French Polynesia, reefs dominated by the macroalgaTurbinaria ornataremained so for multiple population turnovers, whereas reefs whereTurbinariawas removed by a simulated pulse disturbance remained free of macroalgae throughout the 5‐yr study. A field experiment revealed that macroalgae was unable to proliferate on disturbed reefs until ambient herbivory was reduced by more than 50%. Low precariousness of the coral‐invasible state facilitated a gradual transition to a coral community because it allowed sufficient time for coral to repopulate. Accumulation of coral on disturbed reefs was 3.5 times greater than on undisturbed,Turbinaria‐dominated reefs. Long‐term persistence of the coral‐invasible state was facilitated by high abundances of grazing herbivores that prevent the establishment of macroalgae, whereas persistence of theTurbinaria‐dominated state reflected the scarcity of browsing herbivores that consume mature macroalgae. By revealing processes that foster bistability of coral and macroalgae states, our work helps explain the rich dynamical behavior exhibited by coral reef communities in Moorea and elsewhere.
法属波利尼西亚莫雷阿岛热带岛屿珊瑚礁运输和保留过程中的生物和物理相互作用
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发表时间: 2013
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J. Leichter;A. Alldredge;G. Bernardi;A. Brooks;C. Carlson;R. Carpenter;P. Edmunds;Melanie Fewings;Katharine M. Hanson;James L. Hench;S. Holbrook;C. Nelson;R. Schmitt;R. Toonen;L. Washburn;Alex Wyatt
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DOI: 10.1371/journal.pone.0202273
发表时间: 2018
期刊: PloS one
影响因子: 3.7
作者:
Briggs CJ;Adam TC;Holbrook SJ;Schmitt RJ
通讯作者: Schmitt RJ
DOI: 10.1038/s41598-018-25414-8
发表时间: 2018-05-09
期刊: Scientific reports
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
空间和个体发育形态变异在热带褐藻(Turbinaria Ornata)地理范围扩大中的作用
DOI: --
发表时间: --
期刊:
影响因子: --
作者:
Hannah L Stewart
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珊瑚食性和珊瑚群密度对珊瑚生长和存活的影响
DOI: 10.1007/s00338-021-02076-z
发表时间: 2021
期刊: Coral Reefs
影响因子: 3.5
作者:
Kopecky, Kai L.;Cook, Dana T.;Schmitt, Russell J.;Stier, Adrian C.
通讯作者: Stier, Adrian C.