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12篇 您的检索式:作者名="Katharyn"
    题名 作者 年代 出处 被引量
1Salinity stress, nitrogen competition, and facilitation: what controls seasonal succession of two opportunistic green macroalgae?显示文摘Peggy Fong Katharyn E. Boyer Julie S. Desmond Joy B. Zedler 1996Journal of Experimental Marine Biology and Ecology1996,,1:1
2Decreased CRH mRNA expression in the fetal guinea pig hypothala-mus following maternal nutrient restriction 显示文摘Katharyn S G Michael B W David M I 2001Brain Research2001,896,:1
3Triage: Techniques and Applications in Decisionmaking显示文摘Katharyn Kennedy Richard V Aghababian Lucille Gans C.Phuli Lewis 1996Annals of Emergency Medicine1996,,2:1
4Nitrogen further promotes a dominant salt marsh plant in an increasingly saline environment显示文摘Aims Human alterations of the environment are combining in unprecedented ways,making predictions of alterations to natural communities a difficult and pressing challenge.Estuarine systems have been subject to a high degree of modification,including increased nitrogen(N)inputs and altered salinity,factors important in shaping estuarine plant communities.As human populations increase and the climate changes,both N and salinity levels are likely to increase in these coastal marshes.Our objective was to evaluate the interactive effects of N and salinity on USWest Coast salt marsh species;in particular,the performance of the dominant species Sarcocornia pacifica(pickleweed)alone and in mixed species assemblages.We expected increased salinity to favor S.pacifica but that N enrichment could help maintain greater species richness through use of N in salinity tolerance mechanisms.Methods We crossed treatments of N(added or not)and salinity(salt added or not)in a field experiment at a salt marsh in the San Francisco Estuary,California,USA,in each of three habitats:(i)monotypic pickleweed on the marsh plain,(ii)monotypic pickleweed along channels and(iii)mixed assemblages along channels.In a greenhouse experiment,we crossed treatments of N(added or not)and salinity(at three levels to simulate brackish to saline conditions)in(i)pots of pickleweed only and(ii)the same species mix as in the field.Important Findings Naddition doubled S.pacifica biomass and branching in both channel and marsh plain habitats regardless of salinity and greatly increased its dominance over Distichlis spicata and Jaumea carnosa in mixed assemblages along channels.In the greenhouse,S.pacifica biomass increased 6-to 10-fold with N addition over the range of salinities,while D.spicata and J.carnosa biomass increased with N addition only at lower salinity levels.Thus,while localized management could influence outcomes,expected overall increases in both N and salinity with human population growth and climate change are likely to enhance the production of S.pacifica in USWest Coast marsheswhile reducing the diversity of mixed species assemblages.This decline in diversity may have implications for the resilience of marshes already subject to multiple stressors as the climate changes.Amelia Byrd Ryan Katharyn E.Boyer 2012Journal of Plant Ecology2012,5,4:1
5Macroalgal-mediated transfer of water column nitrogen to intertidal sediments and salt marsh plants显示文摘Katharyn E B Peggy F 2005Journal of Experimental Marine Biology and Ecology2005,321,1:1
6Macroalgal-mediated transfer of water column nitrogen to intertidal sediments and salt marsh plants 显示文摘Katharyn E B Peggy F 2005Journal of Experimental Marine Biology and Ecology2005,321,1:1
7Medium frequency broadcast of differential GPS data显示文摘Per K Enge Katharyn Olson 1990IEEE Transactions on Aerospace and Electronic Systems1990,26,4:1
8Undergraduate Engineering Students' Understanding of Heat, Temperature, and Energy: An Examination by Gender and Major显示文摘Katharyn E. K. Nottis Michael J. Prince Margot A. Vigeant 2017US-China Education Review(A)2017,7,3:0
9Measures of risk for challenging behaviors: A comparison between the CBC and BDI显示文摘Barbara Yingling Wert Dona C. Bauman Katharyn Ellen Ketter Nottis 2010美中教育评论2010,7,7:0
10Building an understanding of heat transfer concepts in undergraduate chemical engineering courses显示文摘Katharyn E. K. Nottis Michael J. Prince Margot A. Vigeant 2010美中教育评论2010,7,2:0
11Initial Development of a Concept Inventory to Assess Size, Scale, and Structure in Introductory Astronomy显示文摘Katharyn Ellen Ketter Nottis Edwin (Ned) Ladd Alyssa Goodman Patricia Udomprasert 2015US-China Education Review(B)2015,5,11:0
12找到高清伴侣 平板电视从此不再孤单 aigo P700D显示文摘最近几个月,高清播放产品又开始呈现了高速发展之势,由于上半年平板电视产品的价格不断下滑,高清平板电视的覆盖率也提高了不少,不过国内的高清电视节目仍然处于匮乏的阶段,寥寥无几的高清频道让人乏味,有些还不是全高清的画质,因此为家中的高清平板电视配上一台性能优秀的高清播放器,Katharyne 2010家庭影院技术2010,,10:0
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