Associations between the morphology and biomechanical properties of submerged macrophytes: implications for its survival and distribution in Lake Erhai
Associations between the morphology and biomechanical properties of submerged macrophytes: implications for its survival and distribution in Lake Erhai
复制标题
沉水植物形态与生物力学特性之间的关联：对其在洱海中生存和分布的影响
DOI：
10.1007/s12665-015-4267-0
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发表时间：
2015-03
影响因子：
2.8
通讯作者：
Leyi Ni
中科院分区：
文献类型：
--
作者：
Guorong Zhu;Meng Zhang;Te Cao;Leyi Ni
沉水植物主要分布在受风保护的沿海地带，而不是由于强波的机械破坏而连续分布在湖周围。然而，作为抗机械应力的关键靶点，生物力学特性如何影响其在自然水生生态系统中的生存和分布，目前尚不清楚。以云南洱海为研究对象，在强ES风（HW）、中ES风（MW）和湖岸遮挡弱风扰动的3种风力条件下的25个站点上，研究了海刺草（vallisneria natansa）不同节段植物的分布、生长、叶片生物力学和形态特征。结果表明：v。主要分布在水深5 m以内的东部和北部沿海风护区。植株生长最小、最强、最不柔韧的叶片在MW处。受强而短波影响的沿海地区容易出现纳塔西。此外，在HW处，植物的高生长和相对较强但较不灵活的叶片表明，光合作用的最大化是以降低生物力学性能和增加类似波浪的阻力为代价的，这不利于完成其生命周期，最终降低v的生存和分布。海水受到强烈的波浪扰动。生物力学和形态特征之间的显著关联可能引发机械抗性与植物其他功能（如光合作用）之间的权衡，最终决定天然水生生态系统中沉水植物的生存和分布。
Submerged macrophytes mainly distribute in the wind-protected littoral zones, rather than continuously distribute around the lake due to mechanical damage by strong wave. However, it is unknown how the biomechanical properties, the key targets against mechanical stress, contribute to its survival and distribution in natural aquatic ecosystem. In this study, the distribution, plant growth, and leaf biomechanical and morphological traits of different segments ofVallisneria natanswere examined at 25 sites with three wind strength [sites exposed to strong ES wind (HW), sites exposed to moderate ES wind (MW) and sites sheltered by lakeshore with weak wind disturbance], in Lake Erhai, of Yunnan Province, China. Results showed thatV. natansmainly distributed in the wind-protected eastern and northern littoral zones within 5 m water depth. The smallest plant growth, strongest and least flexible leaves were at MW, indicating thatV. natansis prone to dominate the littoral zones exposed to strong but short wave. Additionally, the high plant growth and relatively stronger and less flexible leaves at HW suggested that the maximization of photosynthesis was at the cost of reduced biomechanical properties and increased drag forces from similar waves, which were unfavourable to complete their life cycles and ultimately reduce the survival and distribution ofV. natansunder strong wave disturbance. The significant associations between the biomechanical and morphological traits may trigger trade-offs between the mechanical resistance and other plant functions, such as photosynthesis, ultimately determining survival and distribution of submerged macrophytes in natural aquatic ecosystems.
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影响因子：
6.9
作者：
Lamberti-Raverot B;Puijalon S
通讯作者：
Puijalon S
DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Guorong Zhu;Meng Zhang;T. Cao;L. Ni;Aiwen Zhong;H. Fu
通讯作者：
Guorong Zhu;Meng Zhang;T. Cao;L. Ni;Aiwen Zhong;H. Fu
影响因子：
1.8
作者：
M. Patterson;M. Harwell;L. Orth;R. Orth
通讯作者：
M. Patterson;M. Harwell;L. Orth;R. Orth
影响因子：
--
作者：
Hua Xiao-zhen
通讯作者：
Hua Xiao-zhen
DOI：
10.1111/j.1469-8137.2007.02314.x
发表时间：
2008-03
期刊：
The New phytologist
影响因子：
--
作者：
S. Puijalon;J. Léna;N. Rivière;J. Champagne;J. Rostan;G. Bornette
通讯作者：
S. Puijalon;J. Léna;N. Rivière;J. Champagne;J. Rostan;G. Bornette