Survival and growth responses of eight Everglades tree species along an experimental hydrological gradient on two tree island types.
Survival and growth responses of eight Everglades tree species along an experimental hydrological gradient on two tree island types.
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八种大沼泽地树种沿着两种树岛类型的实验水文梯度的生存和生长响应。
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
L. Scinto
中科院分区：
文献类型：
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作者：
Susana L. Stoffella;M. Ross;J. Sah;R. Price;P. Sullivan;E. Cline;L. Scinto
问题：在人工树岛上种植的湿地树种苗木的早期存活和生长是如何受到水文和基质类型的影响的？这些回应对更广泛的树岛恢复工作有何影响？地点：美国佛罗里达州博因顿海滩Loxahatchee池塘景观评估(LILA)。方法：通过试验研究水分和基质对苗木生长和成活的影响。两个岛屿--一个泥炭岛和一个石灰岩岛代表了大沼泽地中发现的两种主要类型--是在四个大宇宙中建造的。2006年和2007年3月，在每个岛屿上种植了8个树种的混合树种。在接下来的两年半中，定期评估2006年种植的苗木的存活率和高度生长。结果：随着海拔的升高，两种树岛基质的成活率和生长量都有所提高。幼苗沿水分梯度的生存和生长反应与沼泽地自然水文梯度上的物种分布相匹配。基质对育苗性能的影响表明，大多数树种在石灰岩树岛上的成活率较高，而在泥炭树岛上的生长速度较快。结论：本研究结果可能对恢复现有地貌上的森林和人工创建树岛具有深远的意义。物种对洪水的耐受性知识
Questions: How are the early survival and growth of seedlings of Everglades tree species planted in an experimental setting on artificial tree islands affected by hydrology and substrate type? What are the implications of these responses for broader tree island restoration efforts? Location: Loxahatchee Impoundment Landscape Assessment (LILA), Boynton Beach, Florida, USA. Methods: An experiment was designed to test hydrological and substrate effects on seedling growth and survivorship. Two islands – a peat and a limestonecore island representing two major types found in the Everglades – were constructed in four macrocosms. A mixture of eight tree species was planted on each island in March of 2006 and 2007. Survival and height growth of seedlings planted in 2006 were assessed periodically during the next two and a half years. Results: Survival and growth improved with increasing elevation on both tree island substrate types. Seedlings’ survival and growth responses along a moisture gradient matched species distributions along natural hydrological gradients in the Everglades. The effect of substrate on seedling performance showed higher survival of most species on the limestone tree islands, and faster growth on their peat-based counterparts. Conclusions: The present results could have profound implications for restoration of forests on existing landforms and artificial creation of tree islands. Knowledge of species tolerance to flooding