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  1. NTU Theses and Dissertations Repository
  2. 理學院
  3. 海洋研究所
Please use this identifier to cite or link to this item: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/96335
Title: 珊瑚礁解密:探討不同環境條件下的生態過程
Reef forensics: Ecological processes in contrasting environmental conditions
Authors: 蔡佳蓉
Chia-Jung Tsai
Advisor: 單偉彌
Vianney Denis
Keyword: 鈣化,生產力,速率,珊瑚礁,生態系統功能,干擾,海洋暖化,
calcification,production,rates,coral reef,ecosystem functioning,disturbance,ocean warming,
Publication Year : 2024
Degree: 碩士
Abstract: 生態過程(ecological process)中能量的流動維持著珊瑚礁生態的運作(ecosystem functioning)。能量流動的速率可以代表珊瑚礁的運作以及其健康狀態,並會受到環境和生物因子共同影響。探索生態過程速率隨環境變動的機制,有助於分析珊瑚礁面臨不同環境壓力時的表現,從而理解珊瑚礁面對環境變遷時的耐受性。因此,本研究的主要目標為探討生態過程如何隨環境變動,並根據此結果來評估影響珊瑚礁狀態的因子。研究樣點選定在環境差異大的臺灣珊瑚礁生態系統,分布在臺灣北部、綠島和小琉球三個地區內的淺水區域(5 m水深)和上中光層(25 – 30 m水深)兩個水深深度。我利用野外調查(底棲和魚類組成調查)和文獻資料取得的數值,估算了珊瑚礁中五個重要生態過程的速率,包含碳酸鈣生產、碳酸鈣生物侵蝕、初級生產、植食(以生物量替代)和次級生產,並且測試可能造成速率變化的環境或生物因子。結果顯示這五個生態過程隨著不同的珊瑚礁環境所變動,而這些變動的趨勢顯示和地區及深度的相關因子有所關聯(如:生長繁盛對比退化的珊瑚礁、淺層對比深層水域、熱帶對比亞熱帶地區)。光合作用有效輻射強度是主要驅動生態過程變化的環境因子;至於影響生態過程的生物因子,僅有少數幾個生物類群作為過程的主要貢獻者,但這些類群隨不同地區和深度而轉變。本研究是臺灣首次針對珊瑚礁生態過程進行調查,並打破過去認為一種政策能夠有效保育所有區域的珊瑚礁之迷思。研究結果顯示不同地點的珊瑚礁棲地擁有其獨特的運作系統,因此地區客製化的保育方針才能有效保護不同系統的珊瑚礁。未來的研究應持續探究珊瑚礁生態過程,特別是在生物組成易隨溫度變化而重組的溫度過渡區域,有利於全面性地了解珊瑚礁生態系統運作的機轉。
Ecological processes underpin the functioning of the ecosystem, which is influenced by both the biotic composition and the surrounding environment. In coral reefs, these processes explain the state of the reef at a particular place and time as well as provide insight about their ability to recover from disturbance. Here, I aim to characterize the state of reefs based on selected key ecological processes and to gain insights into how these processes vary in different environmental settings. Rates and/or proxies of ecological processes─calcification, bioerosion, primary production, herbivory, and secondary production─were examined in contrasting reef habitats in Taiwan: shallow (-5 m) and upper mesophotic (-30 m) waters in three regions (North, Green Island and Xiaoliuqiu). I quantified these ecological processes using a combination of empirical data, including benthic and fish surveys, and theoretical models, supplemented by literature-derived data. The results revealed three distinct patterns of ecological processes across habitats, highlighting notable regional and depth-related differences (e.g., thriving versus degraded, shallow versus deep, tropical versus subtropical regions). Among the environmental factors, photosynthetically active radiation (PAR) emerged as a key driver influencing reef functioning. A few taxa made disproportionately high contributions to ecological processes, varying by region and depth. As is currently understood, this is the first comprehensive study to investigate reef ecological processes throughout Taiwan. This approach offers valuable insights for guiding conservation efforts locally, rather than relying on a one-size-fits-all strategy. It also highlights the need for future research to address gaps in the understanding of key processes, particularly in transition zones where ocean warming leads to a reconfiguration of the biotic assemblages.
URI: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/96335
DOI: 10.6342/NTU202404693
Fulltext Rights: 同意授權(全球公開)
metadata.dc.date.embargo-lift: 2029-12-09
Appears in Collections:海洋研究所

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