| Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills | |
| Msanne, J.1; Awada, T.1; Bryan, N. M.1; Schacht, W.1,2; Drijber, R.2; Li, Y.3; Zhou, X.1,4; Okalebo, J.1; Wedin, D.1; Brandle, J.1 | |
| 刊名 | PHOTOSYNTHETICA
 |
| 2017-06-01 | |
| 卷号 | 55期号:2页码:219-230 |
| 关键词 | carboxylation velocity eastern red cedar electron transport fluorescence gas exchange isotope ratio soil nutrients |
| ISSN号 | 0300-3604 |
| DOI | 10.1007/s11099-016-0683-y |
| 通讯作者 | Awada, T.(tawada@unl.edu) |
| 英文摘要 | Vegetation in grasslands is changing at an unprecedented rate. In the Nebraska Sandhills, this shift is attributed in part to encroachment of the woody species Juniperus virginiana. We investigated changes in resource availability and their feedback on seasonal trends in photosynthetic characteristics of J. virginiana trees scattered in open grasslands vs. a dense 57-year-old stand. Dense stand exhibited lower volumetric soil water content, NH4 (+), NO3 (-), and delta C-13, as well as foliage delta C-13, delta N-15, and N content, compared to grasslands. Water potential was higher in trees in grasslands compared to dense stand. J. virginiana in dense stand exhibited similar trends to trees in grasslands for net photosynthetic rate (P (N)), stomatal conductance, transpiration, maximum photochemical efficiency of PSII, maximum carboxylation velocity, and maximum rate of electron transport. P (N) peaked early summer and declined in the fall, with trees in open grasslands lagging behind those in dense stand. Plasticity of this species may place it at a competitive advantage in the Sandhills, further altering grasslands vegetation and ecosystem processes. |
| 收录类别 | SCI |
| WOS关键词 | PLANT ENCROACHMENT ; TALLGRASS PRAIRIE ; LAND-USE ; ECOSYSTEM CARBON ; MESIC GRASSLAND ; LEAF NITROGEN ; FOREST ; SOIL ; DYNAMICS ; CONSEQUENCES |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000398437100003 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557572 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Awada, T. |
| 作者单位 | 1.Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA 2.Univ Nebraska, Dept Agron & Hort, Lincoln, NE 68583 USA 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 4.Campbell Sci Inc, Logan, UT 84341 USA |
| 推荐引用方式 GB/T 7714 | Msanne, J.,Awada, T.,Bryan, N. M.,et al. Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills[J]. PHOTOSYNTHETICA,2017,55(2):219-230. |
| APA | Msanne, J..,Awada, T..,Bryan, N. M..,Schacht, W..,Drijber, R..,...&Hiller, J..(2017).Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills.PHOTOSYNTHETICA,55(2),219-230. |
| MLA | Msanne, J.,et al."Ecophysiological responses of native invasive woody Juniperus virginiana L. to resource availability and stand characteristics in the semiarid grasslands of the Nebraska Sandhills".PHOTOSYNTHETICA 55.2(2017):219-230. |
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