How do coral energy strategies influence their survival?

珊瑚能量策略如何影响它们的生存？

基本信息

批准号：
2882474
负责人：
金额：
--
依托单位：
Bangor University
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2882474
关键词：
How do coral energy strategies

项目摘要

Most reef-building corals harness autotrophic nutrition from their photosynthetic algalendosymbionts and heterotrophic nutrition via predation of plankton. This flexible trophic strategyis thought to underpin their ability to colonise a range of depths, habitats and oceanographiccontexts that vary in energetic resource supply (Williams et al. 2018 Mar Biol; Fox et al. 2018Current Biology). Laboratory experiments suggest heterotrophic feeding might explain the abilityof some corals to persist in challenging environments, including highly turbid reefs where sunlightis rapidly attenuated. This is because heterotrophy provides a valuable nutritional source thatsupports coral growth despite reduced autotrophic contributions from the algal endosymbionts(Grotolli et al. 2006 Nature). Coastal darkening, a consequence of increasingly turbid nearshorewaters, is impacting coral reefs worldwide. Nevertheless, we know very little about how coraltrophic strategies vary in response to spatial and temporal gradients in resource availability andwhether trophic plasticity enables some corals to persist under these increasingly challengingcoastal conditions. Identifying mechanisms that enable coral survival across gradients in resourceavailability is key to understanding whether and how coral reefs will adapt as our coastal waterssteadily grow darker (Williams & Graham 2019 Funct Ecol).

大多数礁石建造的珊瑚通过光合作用藻甘兰匹孕剂和异养营养从浮游生物的捕食中进行自养营养。这种灵活的营养策略被认为是基于其在能量资源供应范围内变化的一系列深度，栖息地和海洋学的能力（Williams等，2018 Mar Biol; Fox etal。2018 -Current Biology）。实验室实验表明，异养的喂养可能解释了某些珊瑚在充满挑战的环境中持续存在的能力，包括阳光迅速减弱的高度浑浊的礁石。这是因为杂营提供了一种有价值的营养来源，尽管藻类内共生菌的自养贡献降低了珊瑚的生长（Grotolli etal。2006自然）。沿海变黑是近乎近地区潮汐越来越浑浊的结果，它影响了全世界的珊瑚礁。然而，我们对珊瑚策略在资源可用性方面的空间和时间梯度的响应以及营养可塑性中如何变化，这使一些珊瑚能够在这些日益挑战的范围条件下持续存在。识别能够在资源可观性中跨梯度跨层次生存的机制是了解珊瑚礁是否以及如何适应我们的沿海水域逐渐变暗的关键（Williams＆Graham 2019功能ECOL）。