维普中文期刊产品整合服务
3篇 您的检索式:作者名="Christopher D.Anderson"
    题名 作者 年代 出处 被引量
1Biliary strictures in pediatric liver transplant recipients – Early diagnosis and treatment results in excellent graft outcomes显示文摘Christopher D.Anderson Yumirle P.Turmelle MichaelDarcy Ross W.Shepherd AlexanderWeymann MichelleNadler SandraGuelker William C.Chapman Jeffrey A.Lowell 2010Pediatric Transplantation2010,,3:1
2Identification of habitat controls on northern red-legged frog populations: implications for habitat conservation on an urbanizing landscape in the Pacific Northwest显示文摘Introduction: In the Pacific Northwest of North America, research addressing lentic-breeding amphibian populationvulnerability has emphasized aquatic habitats, frequently neglecting terrestrial habitats. Consequently, wetlandprotection and restoration often fails to preserve or restore adjacent uplands required by lentic-breeding amphibians.Inattention to the juxtaposition and connectivity of uplands to wetlands could locally extirpate lentic-breedingamphibians. The objective of this research is to identify the relative importance of juxtaposed terrestrial and aquatichabitats in a lentic-breeding amphibian, the northern red-legged frog (Rana aurora), by evaluating the relationshipbetween its occurrence and abundance with its aquatic and terrestrial habitats. To accomplish this, egg mass countswere used to quantify R. aurora populations in 30 stillwater habitats across an urbanization gradient. Using aGeographic Information System, seven descriptors of aquatic and surrounding terrestrial habitats were measured toevaluate their relationships to R. aurora occurrence and abundance.Results: Rana aurora occurrence and breeding abundance both reflect the forested area around wetland breedingsites and forest connectivity to those sites. Rana aurora breeding abundance also strongly reflects the percent offorested perimeter around wetland breeding sites. The forest habitat most important for R. aurora breeding abundanceseems to be > 200 m from the breeding wetlands. The American bullfrog presence and the two aquatic parametersmeasured, wetland area and vegetated area, were unrelated to R. aurora occurrence and breeding abundance.Conclusions: Area and connectivity of juxtaposed forested terrestrial habitat may represent a basic control on R. aurorapresence and population size. Urban development policies should consider preservation and restoration of uplandforest habitats beyond current fixed-width buffers and wetland habitat area at landscape scales.Lauren A.Grand Marc P.Hayes Kristiina A.Vogt Daniel J.Vogt Paul R.Yarnold Klaus O.Richter Christopher D.Anderson Elissa C.Ostergaard Jo O.Wilhelm 2017Ecological Processes2017,6,1:0
3小街道 大文化(英文)显示文摘每个国家有每个国家的文化,每个国家有每个国家的习俗,在一个国家所有人都习以为常的事情在另一个国家人的眼中却是如此的'与众不同'。外国人眼里的中国是什么样的呢?敬请关注:洋眼看中国!Christopher D.Anderson 2007东西南北(大学生版)2007,0,9:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费