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| 1 | Facilitation by nurse plants contributes to vegetation recovery in human-disturbed desert ecosystems显示文摘Aims 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).Methods 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.Important Findings 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. | Ernesto I.Badano Omar R.Samour-Nieva Joel Flores JoséL.Flores-Flores Jorge A.Flores-Cano Juan P.Rodas-Ortíz | 2016 | Journal of Plant Ecology2016，9，5： | 4 |
| 2 | Identification of the regeneration potential of embryo derived calli from various indica rice varieties 显示文摘 | Seraj Z I Islan Z Omar Faruque M | 1997 | Plant Cell Tissue and Organ Culture1997，48，： | 1 |
| 3 | Explicit nonlinear fi- nite element geometric analysis of parabolic leaf spring under various loads 显示文摘 | Kong Y S Omar M Z Chua L B | 2013 | The Scientific World Journal2013，，： | 1 |
| 4 | Oral nifedipine versus intravenous labetalol for acute blood pressure control in hypertensive emergencies of pregnancy:a randomised trial显示文摘 | Raheem I A Saaid R Omar S Z | 2012 | BJOG:An International Journal of Obstetrics&Gynaecology2012，119，1： | 1 |
| 5 | Development of an electrodeposited nickel polymer composite by a zwitterionic surfactant 显示文摘 | Abdel H Z Omar A | 2003 | Surfactants and Detergents2003，27，6： | 1 |
| 6 | A two-dimensional shear deformablebeam for large rotation and deformation problems 显示文摘 | Omar M Z Shabana A A | 2001 | Journal of Sound and Vibration2001，243，3： | 1 |
| 7 | Severe vincristine neurotoxicity with concomitant use of itraconazole 显示文摘 | Ariffin H Omar K Z Ang E L | 2003 | J Paediatr Child Health2003，39，8： | 1 |
| 8 | Kinetic spectrofluorimetric determination of certain cephalosporins in human plasma 显示文摘 | Mahmoud A Omar Osama H Abdelmageed Tamer Z Attia | 2009 | Talanta2009，77，： | 1 |
| 9 | Microstructural development of HP9/4/30 steel during partial remelting 显示文摘 | OMAR M Z ATKINSON H V PALMIERE E J HOME A A KAPRANOS P | 2004 | Steel Res Int2004，75，： | 1 |
| 10 | Concun'ent dinoprostone and oxytocin for labor induction in term premature rupture ofmembranes 显示文摘 | TAN P C DAUD S A OMAR S Z | 2009 | Obstet Gynecol2009，113，5： | 1 |
| 11 | In vitro antifilarial effects of three plant species against adult worms of subperiodic Brugia malayi显示文摘 | Zaridah M Z Idid S Z Wan Omar A | 2001 | Journal of Ethnopharmacology2001，78，： | 1 |
| 12 | Semisolid metal processing techniques for nondendritic feedstock production显示文摘 | Mohammed M N Omar M Z Salleh M S | 2013 | The Scientific World Journal2013，，： | 1 |
| 13 | Evaluation of image-guidance protocols in the treatment of head and neck cancers 显示文摘 | Omar A Z Katja M L | 2007 | Int J Radiat Oncol Biol Phys2007，67，3： | 1 |
| 14 | Development of an electrodeposition Nickel polymer composite by a zwitterionic surfactant显示文摘 | Z Abdel Hamid A M A Omar | 2003 | Surfactants and Detergents2003，6，2： | 1 |
| 15 | Subjective life satisfaction and mental disorders among older adults in UAE in general population显示文摘 | Rafia G Omar ER Taoufik Z | 2010 | Intern J Geriatric Psychiat2010，25，5： | 1 |
| 16 | Reuse of mining wastewater in agricultural activities in Jordan 显示文摘 | Omar A J Yasin Z A | 2009 | Environ Dev Sustain2009，11，4： | 1 |
| 17 | Isariafumosorosea and Metarhizium anisopliae for controlling Atteva sciodoxa (Lepidoptera: Yponomeutidae), a pest of Eurycoma longifolia显示文摘 | Sajap A S Rozihawati Z Omar D | 2014 | Journal of Tropical Forest Science2014，26，1： | 1 |
| 18 | Effects of chemical interesterification on the physicochemical, microstructural and thermal properties of palm stearin, palm kernel oil and soybean oil blends 显示文摘 | Fauzi S H M Rashid N A Omar Z | 2013 | Food chemistry2013，137，1： | 1 |
| 19 | Kinetic Speetrofluorimetric Determination of Certain Cephalosporins in Human Plasma 显示文摘 | Omar M A Abdelmageed O H Attia T Z | 2009 | Talanta2009，77，4： | 1 |
| 20 | Supercritical Fluid Extraction and Quantification of Chlorpyrifos Insecticides in Fresh Vegetables by Gas Chromatography with Electron Capture Detection(GC-ECD) 显示文摘 | Rahman M A Omar D Islam M Z | 2010 | Agriculture and Biology Journal of North America2010，1，4： | 1 |
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