Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12237-010-9269-2 |
Responses of Uniola paniculata L. (Poaceae), an Essential Dune-Building Grass, to Complex Changing Environmental Gradients on the Coastal Dunes | |
Gormally, Cara L.; Donovan, Lisa A. | |
通讯作者 | Gormally, Cara L. |
来源期刊 | ESTUARIES AND COASTS
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ISSN | 1559-2723 |
出版年 | 2010 |
卷号 | 33期号:5页码:1237-1246 |
英文摘要 | Coastal dunes are well known for plant species zonation but less is known about species-specific responses to underlying environmental gradients. We investigated variation in morphological traits and tissue nutrient concentration in Uniola paniculata, along a shoreline-to-landward gradient (transects spanning from the dunes directly behind the high tide mark to 40-100 m inland) in the southeast USA. Several environmental factors decreased with distance from the shoreline (soil B, K, Mg, Na; salinity, pH, and sand accretion), and differences were most pronounced between the 10 m closest to the shoreline and the remainder of the transect. In the 10 m closest to the shoreline, 94% more sand accumulated, which was 31% more saline. Additionally, plants here were taller, contained higher aboveground tissue N and K, and a higher percentage tended to flower. This contrasts with patterns found in salt marshes and saline desert dunes, where plant size is often negatively correlated with salinity. During the 2 years following the planned study, storms washed out <= 25 m of the transects. Resampling of the remaining sites demonstrated that even after erosion of the dune profile, a higher percentage of the plants in the 10 m closest to the shoreline plants tended to flower, relative to populations located further from the shore. Our findings suggested that the environment and plant response in the shoreward 10 m can re-establish relatively quickly. |
英文关键词 | Environmental gradients Intraspecific variation Phenotypic plasticity Coastal sand dunes Sand accretion and erosion Salinity Nutrients Uniola paniculata |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000282510200015 |
WOS关键词 | HATTERAS NATIONAL SEASHORE ; SAND DUNES ; SALT SPRAY ; AMMOPHILA-BREVILIGULATA ; EXPERIMENTAL BURIAL ; PRIMARY SUCCESSION ; PLANT-COMMUNITIES ; LOCAL ADAPTATION ; VEGETATION ; ZONATION |
WOS类目 | Environmental Sciences ; Marine & Freshwater Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/164085 |
作者单位 | Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA |
推荐引用方式 GB/T 7714 | Gormally, Cara L.,Donovan, Lisa A.. Responses of Uniola paniculata L. (Poaceae), an Essential Dune-Building Grass, to Complex Changing Environmental Gradients on the Coastal Dunes[J],2010,33(5):1237-1246. |
APA | Gormally, Cara L.,&Donovan, Lisa A..(2010).Responses of Uniola paniculata L. (Poaceae), an Essential Dune-Building Grass, to Complex Changing Environmental Gradients on the Coastal Dunes.ESTUARIES AND COASTS,33(5),1237-1246. |
MLA | Gormally, Cara L.,et al."Responses of Uniola paniculata L. (Poaceae), an Essential Dune-Building Grass, to Complex Changing Environmental Gradients on the Coastal Dunes".ESTUARIES AND COASTS 33.5(2010):1237-1246. |
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