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| 1 | The Appearance of Ulva laetevirens(Ulvophyceae, Chlorophyta) in the Northeast Coast of the United States of America显示文摘Introduced species may outcompete or hybridize with native species, resulting in the loss of native biodiversity or even alteration of ecosystem processes. In this study, we reported an alien distromatic Ulva species, which was found in an embayment(Holly Pond) connected with Long Island Sound, USA. The morphological and anatomical observations in combination with molecular data were used for its identification to species. Anatomy of collected specimens showed that the cell shape in rhizoidal and basal regions was round and the marginal teeth along the basal and median region were not found. These characteristics were primarily identical to the diagnostic characteristics of Ulva laetevirens Areschoug(Chlorophyta). The plastid-encoding tufA and nucleus-encoding ITS1 were used for its molecular identification. Phylogenetic analysis for the tufA gene placed the specimens from Holly Pond in a well-supported clade along with published sequences of U. laetevirens identified early without any sequence divergence. In ITS tree, the sample also formed well-supported clades with the sequences of U. laetevirens with an estimated sequence divergence among the taxa in these clades as low as 1%. These findings confirmed the morpho-anatomical conclusion. Native to Australia, this species was reported in several countries along the Mediterranean coast after the late of 1990 s. This is the first time that U. laetevirens is found in the northeast coast of United States and the second record for Atlantic North America. | MAO Yunxiang Jang Kyun Kim Roderick Wilson Charles Yarish | 2014 | Journal of Ocean University of China2014，13，5： | 2 |
| 2 | Towards evidence-based guidelines for the prevention of venous thromboembolism: systematic reviews of mechanical methods, oral anticoagulation, dextran and regional anaesthesia as thromboprophylaxis 显示文摘 | Roderick P Ferris G Wilson K | 2005 | Health Technol Assess2005，9，49： | 1 |
| 3 | Towards evidence-based guide- lines for the prevention of venous thromboembolism: systematic re- views of mechanical methods, oral anticoagulation, dextran and re- gional anaesthesia as thromboprophylaxis显示文摘 | Roderick P Ferris G Wilson K | 2005 | Health Technol Assess2005，9，： | 1 |
| 4 | Towards evidence-based guidelines for the prevention of venous thromboembolism: systematic reviews of mechanical methods,oral anticoagulation,dextran and regional anaesthesia as thromboprophylaxis显示文摘 | Roderick P Ferris G Wilson K Halls H Jackson D Collins R | 2005 | Health Technol Assess2005，9，： | 1 |
| 5 | Towards evidence-based guidelines for the prevention of venous thromboembolism:systematic reviews of mechanical methods,oral anticoagulation,dextran and regional anaesthesia as thromboprophylaxis显示文摘 | Roderick P Ferris G Wilson K | | 0，，49： | 1 |
| 6 | Towards evidence-based guidelines for the prevention of venous thromboembolism:systematic reviews of mechanical methods,oral anticoagulation,dextran and regional anaesthesia as thromboprophylaxis显示文摘 | Roderick P Ferris G Wilson K | 2005 | Health Technol Assess2005，9，： | 1 |
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