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| 作者 | Hsing-Juh Lin, Chen-Lu Lee, Shang-En Peng, Meng-Chi Hung, Pi-Jen Liu, Anderson B. Mayfield |
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| 出版日期 | 2018 |
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| 著作名稱 | The effects of El Nino‐Southern Oscillation events on intertidal seagrass beds over a long‐term timescale
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| 刊名 | Global Change Biology |
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| 卷 | 24 |
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| 期 | 10 |
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| 頁數 | 4566-4580 |
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| 被收錄索引 | SCI |
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| 主題 | 動物;植物 |
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| 關鍵字 | ENSO, eutrophication, Halodule uninervis, La Niña, periphyton, Thalassia hemprichii |
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| 摘要 | El Niño-Southern Oscillation (ENSO) events can cause dramatic changes in marine communities. However, we know little as to how ENSO events affect tropical seagrass beds over decadal timescales. Therefore, a diverse array of seagrass (Thalassia hemprichii) habitat types were surveyed once every 3 months for 16 years (January 2001 to February 2017) in a tropical intertidal zone that is regularly affected by both ENSO events and anthropogenic nutrient enrichment. La Niña and El Niño events had distinct effects on the biomass and growth of T. hemprichii. During La Niña years, higher (a) precipitation levels and (b) seawater nitrogen concentrations led to increases in seagrass leaf productivity, canopy height, and biomass. However, the latter simultaneously stimulated the growth of periphyton on seagrass leaves; this led to decreases in seagrass cover and shoot density. More frequent La Niña events could, then, eventually lead to either a decline in intertidal seagrass beds or a shift to another, less drought-resistant seagrass species in those regions already characterized by eutrophication due to local anthropogenic activity. |
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| 系統號 | NO000007561 |
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