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Title: | 環境與系統發育限制對蛾類溫度耐受性和分佈的影響 Impacts of Environmental Conditions and Phylogenetic Constraints on Moth Thermal Tolerances and Distributions |
Authors: | 許君咏 Chun-Yung Hsu |
Advisor: | 沈聖峰 Sheng-Feng Shen |
Keyword: | 人為氣候變遷,熱性狀,海拔分布,系統發育生態位保守主義,氣候變異度假說, Anthropogenic climate change,thermal traits,elevation distribution,phylogenetic niche conservatism,climatic variability hypothesis, |
Publication Year : | 2023 |
Degree: | 碩士 |
Abstract: | 人為氣候變遷正在導致生物多樣性與生態系統的劇烈變動,更加凸顯深入了解物種對溫度變化反應的急迫性。本研究探討環境因素、演化過程和熱性狀之間複雜的交互作用,以及這些因素如何影響物種的分佈和對氣候變遷的韌性。我們在中國、臺灣和馬來西亞的山區進行了大規模的野外實驗,利用水浴槽實際測量蛾類的臨界溫度極限。我們在不同海拔高度設置Robinson式陷阱,收集物種的海拔分佈數據,並利用iButton記錄了當地的微氣候數據。我們使用系統發育比較方法和線性混合效應模型,以瞭解影響熱性狀和分佈的變量。與初始假設相反,我們發現環境條件比演化更能影響熱性狀和分佈,支持系統發育生態位保守主義(phylogenetic niche conservatism)的證據有限,這表示在決定蛾的溫度耐受性和分佈上,當前環境條件是比演化更關鍵的因素。我們也發現熱性狀和海拔分佈之間的顯著相關性,其中體型越大,溫度耐受範圍越窄。與經典的氣候變異度假說 (climate variability hypothesis)相反,我們的研究結果顯示,在影響溫度耐受範圍的環境條件中,平均和極端環境溫度比整體氣候變異更為重要,這表示在快速變遷的氣候下,需要繼續研究這些複雜的關係,對於制定有效的保育策略,以及增加我們對物種在環境變化下大尺度生理反應的理解至關重要。 Anthropogenic climate change is provoking substantial alterations in biodiversity and ecosystems, emphasizing the urgency for an in-depth understanding of species' responses to temperature fluctuations. This research delves into the intricate interaction between environmental elements, evolutionary processes, and species attributes, all of which play pivotal roles in determining species' distribution and resilience to climate change. We executed large-scale field investigations in the mountainous regions of China, Taiwan, and Malaysia, testing the critical thermal boundaries of moths using water baths. Elevation distribution data of species were gathered via Robinson's traps strategically placed along the elevation gradient, and iButtons were employed to document local microclimate data. To discern the critical variables affecting moth thermal characteristics and distribution, we utilized phylogenetically informed methodologies and linear mixed-effect models. Counter to our initial supposition, the data indicated that present environmental conditions exert a more considerable influence on moth thermal traits and distribution patterns than evolutionary lineage. The limited evidence we found for niche conservatism signifies a dominant role of current environmental conditions over hereditary traits in determining moth thermal tolerances and elevation distributions. Our research underscores notable associations between thermal tolerance range and moth distribution, with larger species showing more confined thermal tolerance ranges. Contrary to the classical climatic variability hypothesis, our study accentuates the critical influence of average and extreme environmental temperatures, more than overall climate variability, necessitating ongoing exploration of these intricate relationships amidst rapidly evolving climates. The insights from our research are paramount in devising effective conservation strategies and broadening our comprehension of species' wide-scale physiological adaptations to environmental shifts. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/89949 |
DOI: | 10.6342/NTU202303679 |
Fulltext Rights: | 同意授權(全球公開) |
Appears in Collections: | 氣候變遷與永續發展國際學位學程(含碩士班、博士班) |
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ntu-111-2.pdf | 1.95 MB | Adobe PDF | View/Open |
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