Arid
DOI10.1093/jpe/rtw002
Facilitation by nurse plants contributes to vegetation recovery in human-disturbed desert ecosystems
Badano, Ernesto I.1; Samour-Nieva, Omar R.1; Flores, Joel1; Flores-Flores, Jose L.2; Flores-Cano, Jorge A.3; Rodas-Ortiz, Juan P.1
通讯作者Badano, Ernesto I.
来源期刊JOURNAL OF PLANT ECOLOGY
ISSN1752-9921
EISSN1752-993X
出版年2016
卷号9期号:5页码:485-497
英文摘要

Facilitation by nurse plants is a common interaction in harsh environments and this positive plant-plant interaction may promote vegetation recovery in ecosystems affected by human activities. Determining the relevance of this process, however, requires assessing how nurse plants influence the establishment of other species, as well as the proportion of species in the regional species pool that would benefit from the presence of nurse plants in human-disturbed areas. Further, since vegetation recovery is a time-dependent process, the community-level consequences of facilitation are likely to vary among landscapes with different disturbance history. Thus, an integrative perspective of the relevance of nurse plants for vegetation recovery could be obtained by measuring their effects across different human-disturbed landscapes of the target region. This study focuses on these issues and uses a regional-scale approach to assess the community-level effects of a widespread nurse plant of American deserts, the creosotebush (Larrea tridentata).


This study was conducted in the southernmost portion of Chihuahuan Desert because most floodplain valleys of this region have been affected by human activities during the past centuries. For this study, we selected 10 floodplain valleys differing in their age (i.e. the time elapsed after human activities were ceased). At each landscape, we measured the cover of creosotebushes and the proportion of plant species positively associated with them, as well as the density of seeds in the soil beneath creosotebush canopies. All these data were regressed against the age of the landscapes. Further, to assess whether positive association patterns were due to facilitation or other processes, we conducted field experiments and measured the ecophysiological performance of plant species established beneath and outside creosotebush canopies.


Most plant species from the target region were positively associated to creosotebushes, and our field experiments and ecophysiological measures indicated that these distribution patterns can be attributed to facilitative interactions. In most landscapes, the density of seeds was higher beneath creosotebushes than in the surrounding habitats, suggesting that these shrubs may also act as seed traps. The community-level effects of creosotebushes increased with landscape age and creosotebush cover, indicating that magnitude of these effects depends on the disturbance history of each site. These results highlight the relevance of performing large-scale assessments for identifying the consequences of facilitation on vegetation recovery across space and time. We then propose that this kind of large-scale approach should be taken into account in the development of conservation programs aimed at the recovery and preservation of plant biodiversity in harsh environments.


英文关键词Chihuahuan desert community-level effects community succession positive interactions Mexico
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000386153600001
WOS关键词SOUTHERN CHIHUAHUAN DESERT ; SEMIARID ENVIRONMENT ; SONORAN DESERT ; MOJAVE-DESERT ; LARREA-TRIDENTATA ; CYLINDROPUNTIA-LEPTOCAULIS ; CHLOROPHYLL FLUORESCENCE ; SEEDLING ESTABLISHMENT ; COMMUNITY ORGANIZATION ; CUSHION PLANTS
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194687
作者单位1.Inst Potosino Invest Cient & Tecnol AC, Div Ciencias Ambientales, Camino Presa San Jose 2055,Colonia Lomas 4ta Secc, San Luis Potosi 78216, Mexico;
2.Univ Autonoma San Luis Potosi, Inst Invest Zonas Desert, Altair 200, San Luis Potosi 78377, Mexico;
3.Univ Autonoma San Luis Potosi, Fac Agron, Km 14-5 Carretera San Luis Matehuala, San Luis Potosi 78321, Mexico
推荐引用方式
GB/T 7714
Badano, Ernesto I.,Samour-Nieva, Omar R.,Flores, Joel,et al. Facilitation by nurse plants contributes to vegetation recovery in human-disturbed desert ecosystems[J],2016,9(5):485-497.
APA Badano, Ernesto I.,Samour-Nieva, Omar R.,Flores, Joel,Flores-Flores, Jose L.,Flores-Cano, Jorge A.,&Rodas-Ortiz, Juan P..(2016).Facilitation by nurse plants contributes to vegetation recovery in human-disturbed desert ecosystems.JOURNAL OF PLANT ECOLOGY,9(5),485-497.
MLA Badano, Ernesto I.,et al."Facilitation by nurse plants contributes to vegetation recovery in human-disturbed desert ecosystems".JOURNAL OF PLANT ECOLOGY 9.5(2016):485-497.
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