Influence of Regional Water Temperature Variability on the Flowering Phenology and Sexual Reproduction of the Seagrass Zostera marina in Korean Coastal Waters
Influence of Regional Water Temperature Variability on the Flowering Phenology and Sexual Reproduction of the Seagrass Zostera marina in Korean Coastal Waters
复制标题
区域水温变化对韩国沿海海草大叶藻开花物候和有性生殖的影响
DOI：
10.1007/s12237-019-00569-3
复制
发表时间：
2019
影响因子：
2.7
通讯作者：
Kun
中科院分区：
文献类型：
--
作者：
Le;S. Kim;Hwi;Zhaxi Suonan;Hyegwang Kim;Ojong Kwon;Kun
由于全球气候变化导致的海表温度升高是对许多温带海草生长和生存的主要威胁，而冷水涌升可能会在生长季节改善温带海草草甸的高温胁迫。近几十年来，由于气候变化，韩国沿海的海草越来越多地受到水温上升和水温异常的影响，但这些事件对海草生殖物候的影响仍然知之甚少。我们调查了韩国沿海沿着的四个海草草甸中大叶藻的生殖物候和有性生殖。两个研究地点位于南海岸，水温显示出显着的变暖趋势，而另外两个研究地点位于东海岸，沿海冷水上升流是普遍的。水温表现出较强的季节性与较冷的冬季和温暖的夏季在南部海岸的网站比在东部海岸的网站。冷水上升流事件频繁发生沿着韩国东海岸，导致在生长季节的水温异常凉爽。Z.在东海岸，相对于南海岸，滨海植物开花时间延长和/或早熟。东海岸的平均花期为5-7.5个月，南海岸的平均花期为3.5个月。此外，生殖枝密度和生物量，以及相应的开花频率和生殖努力是高得多（2-3倍）在东海岸的网站比在南海岸的网站。因此，潜在的种子生产是在东海岸网站比在南海岸网站。总体而言，夏季高水温降低了Z.在南部海岸的码头，而在东海岸的区域冷水上升流改变了季节温度模式，并降低夏季温度的最高点，从而提供了一个相对较长的时期的最佳水温生产的生殖枝。区域水温变化在改变海草开花反应中具有重要作用，这可能通过调节性-无性生殖权衡来影响海草草甸的长期稳定性和维持。
Increasing sea surface temperature due to global climate change is a major threat to the growth and survival of many temperate seagrasses, while cold-water upwelling can potentially ameliorate high-temperature stress on temperate seagrass meadows during growing seasons. Seagrasses in the coasts of Korea are increasingly influenced by rising water temperatures and water temperature anomalies in recent decades due to climate change, but the impacts of such events on reproductive phenology of seagrasses remain poorly understood. We investigated the reproductive phenology and sexual reproduction of Zostera marina in four seagrass meadows along the coasts of Korea. Two study sites were located on the south coast where water temperature shows significant warming trends, while two other study sites were located on the east coast where coastal cold-water upwelling is prevalent. Water temperature exhibited stronger seasonality with cooler winter and warmer summer in the south coast sites than in the east coast sites. Cold-water upwelling events occurred frequently along the east coast of Korea, leading to anomalously cool water temperatures during the growing season. Z. marina flowering was prolonged and/or precocious at the east coast sites relative to the south coast sites. The mean flowering period was 5–7.5 months at the east coast sites and 3.5 months at the south coast sites. Moreover, reproductive shoot density and biomass, as well as the corresponding flowering frequency and reproductive efforts were much higher (2–3 times) at the east coast sites than at the south coast sites. Consequently, the potential seed production was higher in the east coast sites than in the south coast sites. Overall, high summer water temperature appeared to reduce sexual reproduction of Z. marina in the south coast sites, while regional cold-water upwelling on the east coast changed seasonal temperature patterns and decreased summer temperature highs, consequently provided a relatively long period of optimal water temperature for production of reproductive shoots. Regional water temperature variability has an important role in shifting the flowering responses of seagrass, which could affect the long-term stability and maintenance of seagrass meadows via the regulation of the sexual-asexual reproductive trade-off.
气候变暖和海洋碳化对鳗草大叶藻码头的实验影响
影响因子：
2.5
作者：
Zimmerman, RC;Hill, VJ;Jinuntuya, M;Celebi, B;Ruble, D;Smith, M;Cedeno, T;Swingle, WM
通讯作者：
Swingle, WM
影响因子：
16.6
作者：
Oliver ECJ;Donat MG;Burrows MT;Moore PJ;Smale DA;Alexander LV;Benthuysen JA;Feng M;Sen Gupta A;Hobday AJ;Holbrook NJ;Perkins-Kirkpatrick SE;Scannell HA;Straub SC;Wernberg T
通讯作者：
Wernberg T