生命科學專業學院—生物多樣性國際研究生博士學位學程

Permanent URI for this communityhttp://rportal.lib.ntnu.edu.tw/handle/20.500.12235/80417

Academia Sinica has established the Taiwan International Graduate Program (TIGP) in collaboration with a consortium of the key national research universities in Taiwan. The purpose of the program is to develop the talent pool in those modern multidisciplinary fields that are important in the future economical and social development of Taiwan and to enhance the innovative potential and academic standards of research in these and related fields.

TIGP will offer Ph.D. programs only in selected disciplines agreed upon between Academia Sinica and the national research universities. It is the intent of the Program to offer Ph.D. degree programs only in inter-disciplinary areas in physical sciences, applied sciences, engineering, biological and agricultural sciences, health and medical sciences, and humanities and social sciences.

Academia Sinica will assume principal oversight of the academic options of the Program. It will provide the intellectual leadership, the physical facilities, and the research resources. Qualified and interested faculty members of the participating national research universities are invited to join the Program as affiliated faculty, and participate in teaching, supervision of research, and mentoring of the international graduate students.

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    重新審視極向遷移:東亞軸孔珊瑚的隱蔽譜系與生物地理結構
    (2025) 周文華; Chou, Wen-Hua
    物種向高緯度遷移被視為海洋生態系對氣候變遷的重要反應,然而此概念多以物種為單一演化單位作為前提。本論文檢驗此假設,使用三種在日本已有向高緯度遷移紀錄的優勢造礁軸孔珊瑚為研究對象,於台灣進行系統調查,鑑定其隱蔽種組成,並解析形塑現今空間分布的可能因素。本研究整合形態、分子與族群歷史分析,結果顯示三個名義物種皆由形態上難以區分但遺傳上高度分化的隱蔽種所構成,而且這些隱蔽種的分化程度已經達到屬於不同物種的程度。在台灣,隱蔽種分布與生物地理界線陳氏線高度一致,然而於更廣泛的東亞尺度,隱蔽種則呈現彼此不同的空間分佈模式,且分佈模式無法僅以當代環境梯度解釋。族群歷史推論顯示,目前的分布格局可能受到過去歷史氣候事件的影響,而這些事件對當前分布的形成可能具有關鍵作用。結合歷史族群軌跡與現行分布顯示,即使目前看似具有遷徙潛力的物種,也未必能在不同棲地建立長期穩定的族群,而遷徙後能否持續,也可能取決於該物種是否維持足夠的遺傳多樣性與適應能力以因應新的環境條件。即使有能力跨越多種棲地的物種,也無法保證一定能往高緯度擴張,這可能來物種本身限制,或是當地非生物條件與原棲地之差異,而生物與非生物因子可能會與該隱蔽種的族群歷史交互作用,決定其在氣候變遷下是擴張、維持或衰退。綜合而言,東亞珊瑚的向高緯度遷移並非物種層級的現象,而是由隱蔽種各自的演化與族群歷史所塑造的差異化回應,且現有空間分布範圍並不能保證他們未來面對氣候變遷時皆具備向高緯度遷移的能力,因此辨識與評估這些隱蔽種對於解讀生物地理格局、預測珊瑚在氣候變遷下的反應以及制定有效的保育策略至關重要。