Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12080-017-0356-x |
Zooming in on coarse plant functional types-simulated response of savanna vegetation composition in response to aridity and grazing | |
Lohmann, Dirk1; Guo, Tong2,3; Tietjen, Britta2,3,4 | |
通讯作者 | Lohmann, Dirk |
来源期刊 | THEORETICAL ECOLOGY
![]() |
ISSN | 1874-1738 |
EISSN | 1874-1746 |
出版年 | 2018 |
卷号 | 11期号:2页码:161-173 |
英文摘要 | Precipitation and land use in terms of livestock grazing have been identified as two of the most important drivers structuring the vegetation composition of semi-arid and arid savannas. Savanna research on the impact of these drivers has widely applied the so-called plant functional type (PFT) approach, grouping the vegetation into two or three broad types (here called meta-PFTs): woody plants and grasses, which are sometimes divided into perennial and annual grasses. However, little is known about the response of functional traits within these coarse types towards water availability or livestock grazing. In this study, we extended an existing eco-hydrological savanna vegetation model to capture trait diversity within the three broad meta-PFTs to assess the effects of both grazing and mean annual precipitation (MAP) on trait composition along a gradient of both drivers. Our results show a complex pattern of trait responses to grazing and aridity. The response differs for the three meta-PFTs. From our findings, we derive that trait responses to grazing and aridity for perennial grasses are similar, as suggested by the convergence model for grazing and aridity. However, we also see that this only holds for simulations below a MAP of 500 mm. This combined with the finding that trait response differs between the three meta-PFTs leads to the conclusion that there is no single, universal trait or set of traits determining the response to grazing and aridity. We finally discuss how simulation models including trait variability within meta-PFTs are necessary to understand ecosystem responses to environmental drivers, both locally and globally and how this perspective will help to extend conceptual frameworks of other ecosystems to savanna research. |
英文关键词 | Traits Dryland Degradation Shrub encroachment Simulation Eco-hydrological model EcoHyD |
类型 | Article |
语种 | 英语 |
国家 | Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000433982800004 |
WOS关键词 | TREE-GRASS COEXISTENCE ; SHRUB ENCROACHMENT ; AFRICAN SAVANNA ; SPECIES RICHNESS ; SEMIARID SAVANNA ; LAND-USE ; ECOSYSTEM MULTIFUNCTIONALITY ; RAINFALL VARIABILITY ; AUSTRALIAN SAVANNA ; CLIMATIC GRADIENT |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/213467 |
作者单位 | 1.Univ Potsdam, Plant Ecol & Nat Conservat, Muhlenberg 3, D-14467 Potsdam, Germany; 2.Free Univ Berlin, Inst Biol, Biodivers & Ecol Modelling, Altensteinstr 34, D-14195 Berlin, Germany; 3.Free Univ Berlin, DCPS, D-14195 Berlin, Germany; 4.Berlin Brandenburg Inst Adv Biodivers Res BBIB, D-14195 Berlin, Germany |
推荐引用方式 GB/T 7714 | Lohmann, Dirk,Guo, Tong,Tietjen, Britta. Zooming in on coarse plant functional types-simulated response of savanna vegetation composition in response to aridity and grazing[J],2018,11(2):161-173. |
APA | Lohmann, Dirk,Guo, Tong,&Tietjen, Britta.(2018).Zooming in on coarse plant functional types-simulated response of savanna vegetation composition in response to aridity and grazing.THEORETICAL ECOLOGY,11(2),161-173. |
MLA | Lohmann, Dirk,et al."Zooming in on coarse plant functional types-simulated response of savanna vegetation composition in response to aridity and grazing".THEORETICAL ECOLOGY 11.2(2018):161-173. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。