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Landscape-scale variation in the seed banks of floodplain wetlands with contrasting hydrology in China
文献类型：期刊论文
| 作者 | Davy, Anthony J.; Yuan, Long Y.; Liu, Gui H.; Li, Wei; Li, En H. |
| 刊名 | FRESHWATER BIOLOGY
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 51期号:10页码:1862-1878 |
| 关键词 | Chao 2 marsh rarefaction curve seed-bank diversity species richness |
| ISSN号 | 0046-5070 |
| DOI | 10.1111/j.1365-2427.2006.01621.x |
| 英文摘要 | 1. At a local scale, the species composition, diversity and spatial variation of wetland plant communities are determined primarily by spatial and temporal heterogeneity in their environments. Less is known about variation at a landscape-level. The floodplain of the Changjiang (Yangtze) River in China includes hydrologically connected, subtropical wetlands with different hydrological characteristics. 2. We examined seed-bank species composition and richness in marshes of two contrasting hydrological types: permanent marshes, fed by local runoff, and lakeshore marshes more closely connected to the regulated river. Lakeshore marshes are flooded annually to depth of approximately 1 m and during flooding they support an alternate, aquatic vegetation type. The soil seed bank in March was a comparative estimator of species diversity. At the beginning of the growing season it included seeds from both phases of alternating vegetation types associated with the annual hydrological cycle. 3. A regional pool of 101 species was detected in the seed banks of six wetlands associated with the river and its tributaries: 56 occurred in permanent marshes and 59 in lakeshore marshes, with only 15 common to both. Species rarefaction curves indicated that more species occurred in permanent than lakeshore marshes at equal numbers of individuals sampled. However, the more heterogeneous lakeshore seed banks were estimated (Chao 2) to have greater total species richness (81) than permanent marsh (60). 4. Analysis using Sorensen's coefficient of similarity and DCA ordination revealed complex variation, with much greater differences between hydrological types than within them, irrespective of geographical distance. The types also differed significantly in the composition of four functional groups of species. 5. Despite the potential for dispersal of propagules via the annually pulsing river system (hydrochory), at a regional and landscape scale, diversity is maintained largely by large-scale temporal hydrological heterogeneity and smaller scale spatial and topographic heterogeneity. |
| WOS研究方向 | Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000240527100006 |
| 出版者 | BLACKWELL PUBLISHING |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1168]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Li, Wei |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Lab Aquat Plant Biol, Wuhan 430074, Peoples R China 2.Univ E Anglia, Sch Biol Sci, Ctr Ecol Evolut & Conservat, Norwich NR4 7TJ, Norfolk, England |
| 推荐引用方式 GB/T 7714 | Davy, Anthony J.,Yuan, Long Y.,Liu, Gui H.,et al. Landscape-scale variation in the seed banks of floodplain wetlands with contrasting hydrology in China[J]. FRESHWATER BIOLOGY,2006,51(10):1862-1878. |
| APA | Davy, Anthony J.,Yuan, Long Y.,Liu, Gui H.,Li, Wei,&Li, En H..(2006).Landscape-scale variation in the seed banks of floodplain wetlands with contrasting hydrology in China.FRESHWATER BIOLOGY,51(10),1862-1878. |
| MLA | Davy, Anthony J.,et al."Landscape-scale variation in the seed banks of floodplain wetlands with contrasting hydrology in China".FRESHWATER BIOLOGY 51.10(2006):1862-1878. |
入库方式： OAI收割
来源：武汉植物园
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