Oman Botanic Garden
Oman Botanic Garden
Al Farsi K.A.A.Y.,University of Sheffield |
Lupton D.,Oman Botanic Garden |
Hitchmough J.D.,University of Sheffield |
Cameron R.W.F.,University of Sheffield
Journal of Arid Environments | Year: 2017
The conifer, Juniperus seravschanica is a keystone species within Oman, yet its decline is typical of other arid-adapted, montane tree species. This research aimed to identify causes of decline and subsequent viable conservation strategies; strategies that may have wider application for tree conservation. Decline in J. seravschanica is typified by foliar dieback and little regeneration via seed; traits most apparent at lower altitudes. The research evaluated the viability of seeds collected at three different altitudes: 2100-2220 m (Low), 2300-2400 m (Mid) and 2500-2570 m above sea level (High). In addition, seeds and young trees were planted at these altitudes and maintained under differential irrigation. Results showed that trees grown at Low altitude produced fewer, less-viable seed. Transplanting young trees proved more successful than seed sowing in re-establishing plants in the wild. Age of transplant had an effect, however, with 5-year-old stock showing greater survival (>97%) than 2-year-old trees. The younger trees only established well when planted at High altitude, or provided with irrigation at Mid/Low altitudes. Water availability did not entirely explain survival, and in some locations direct heat stress too may be limiting viability. Practical conservation measures include identifying genotypes with greater drought/heat tolerances and planting only more mature nursery trees. © 2017 Elsevier Ltd.
Van Kleunen M.,University of Konstanz |
Dawson W.,University of Konstanz |
Essl F.,University of Vienna |
Pergl J.,Academy of Sciences of the Czech Republic |
And 44 more authors.
Nature | Year: 2015
All around the globe, humans have greatly altered the abiotic and biotic environment with ever-increasing speed. One defining feature of the Anthropocene epoch is the erosion of biogeographical barriers by human-mediated dispersal of species into new regions, where they can naturalize and cause ecological, economic and social damage. So far, no comprehensive analysis of the global accumulation and exchange of alien plant species between continents has been performed, primarily because of a lack of data. Here we bridge this knowledge gap by using a unique global database on the occurrences of naturalized alien plant species in 481 mainland and 362 island regions. In total, 13,168 plant species, corresponding to 3.9% of the extant global vascular flora, or approximately the size of the native European flora, have become naturalized somewhere on the globe as a result of human activity. North America has accumulated the largest number of naturalized species, whereas the Pacific Islands show the fastest increase in species numbers with respect to their land area. Continents in the Northern Hemisphere have been the major donors of naturalized alien species to all other continents. Our results quantify for the first time the extent of plant naturalizations worldwide, and illustrate the urgent need for globally integrated efforts to control, manage and understand the spread of alien species. © 2015 Macmillan Publishers Limited.
PubMed | University of Vienna, The Forest Herbarium BKF, Nelson Mandela Metropolitan University, University of Potsdam and 25 more.
Type: Journal Article | Journal: Nature | Year: 2015
All around the globe, humans have greatly altered the abiotic and biotic environment with ever-increasing speed. One defining feature of the Anthropocene epoch is the erosion of biogeographical barriers by human-mediated dispersal of species into new regions, where they can naturalize and cause ecological, economic and social damage. So far, no comprehensive analysis of the global accumulation and exchange of alien plant species between continents has been performed, primarily because of a lack of data. Here we bridge this knowledge gap by using a unique global database on the occurrences of naturalized alien plant species in 481 mainland and 362 island regions. In total, 13,168 plant species, corresponding to 3.9% of the extant global vascular flora, or approximately the size of the native European flora, have become naturalized somewhere on the globe as a result of human activity. North America has accumulated the largest number of naturalized species, whereas the Pacific Islands show the fastest increase in species numbers with respect to their land area. Continents in the Northern Hemisphere have been the major donors of naturalized alien species to all other continents. Our results quantify for the first time the extent of plant naturalizations worldwide, and illustrate the urgent need for globally integrated efforts to control, manage and understand the spread of alien species.
Al Said F.A.,P.A. College |
Al Farsi K.,Oman Botanic Garden |
Khan I.A.,University of Agriculture at Faisalabad |
Ali A.,Sultan Qaboos University |
And 2 more authors.
Journal of Food, Agriculture and Environment | Year: 2014
Tomato production in Oman depends on imported hybrids, which do not follow any officially regulated import mechanism leading to the exploitation of tomato growers. This study evaluated the adaptability and nutritional quality of 54 tomato genotypes acquired from AVRDC, Taiwan, tested at two locations viz. Agricultural Experimental Station, Sultan Qaboos University and at Agricultural Research Center Rumais, Barka, Oman, during two successive growing seasons. Tomato genotypes were classified into different categories like fresh market tomato, cherry tomato, high-lycopene tomato and heat tolerant accessions. Significant variations were observed for yield, yield related traits and fruit quality not only within the accessions, but also when grown at different locations. For fresh market category, CLN2545A, CLN2498E, CLN2498D, PT4664B, CLN2001A and CL5915 indicated dominance over other accessions in relation to yield and fruit number over years and locations. Most of these accessions exhibited the TSS contents from 4 to 6.5%. In high-lycopene category, CLN2071C, CLN2366B and CLN2366A produced higher yields, respectively. In cherry tomato category, the CHT1050SC, CHT1050SB, CHT1050SG and CHT1050SA were high yielder and their TSS contents ranged from 6.9 to 7.7%. The lycopene and vitamin C contents in these 54 tomato accessions varied significantly (P≤0.05) and ranged from 6.64 to 90.37 mg kg-1 and 25.7 to 329.9 mg kg-1, respectively. The highest lycopene (90.37 mg kg-1) and vitamin C (329.9 mg kg-1) values were observed for the fresh market accession BL1173 and CLN2498D, respectively. Overall the results revealed that some of the accessions have promising adaptability to local conditions and could be further exploited in breeding programs for crop improvement and nutritional quality.
Al-Abbasi T.M.,National Commission for Wildlife Conservation and Development NCWCD |
Al-Farhan A.,King Saud University |
Al-Khulaidi A.W.,Agricultural Research and Extension Authority AREA |
Hall M.,Center for Middle Eastern Plants |
And 3 more authors.
Edinburgh Journal of Botany | Year: 2010
An Important Plant Area programme has been initiated for the Arabian region by the IUCN Arabian Plant Specialist Group. The aim of this programme is to assess hotspots of plant diversity in the region and designate the most important as Important Plant Areas. These assessments are conducted on the basis of specific criteria and this paper presents the criteria which have been adopted for the Arabian Peninsula countries of Saudi Arabia, Oman and Yemen. These Arabian criteria differ from those originally developed for Europe, and so they are presented here in full. This paper also discusses the context of the Important Plant Area programme and its ability to provide a framework for conservation planning. © 2010 Trustees of the Royal Botanic Garden Edinburgh.
Brinkmann K.,University of Kassel |
Patzelt A.,Oman Botanic Garden |
Schlecht E.,University of Kassel |
Buerkert A.,University of Kassel
Applied Vegetation Science | Year: 2011
Question: Can we predict the spatial distribution of plant communities in semi-arid rangelands based on a limited set of environmental variables? Where are priority areas for conservation located?Location: Al Jabal al Akhdar, Sultanate of Oman.Methods: A Classification Tree Analysis (CTA) was used to model the presence/absence of seven rangeland communities and agricultural areas based on seven selected environmental predictor variables. The latter were either obtained from existing digital datasets or derived from a digital elevation model and satellite images, whereas the grazing intensity was spatially modelled with the kernel density estimation technique. The resulting decision rules of a CTA were applied for predictive mapping within the study area (400 km2, resolution of 5 m) by means of ENVI's decision tree classifier. Plant communities of natural rangelands were subsequently evaluated to determine priority areas for nature conservation.Results: Altitude, grazing intensity and landform revealed the highest predictive power. Most of the rangelands were predicted as Sideroxylon-Oleetum. The overall classification accuracy was 89%, whereby agricultural areas and the Ziziphus spina-christi-Nerium oleander community at wadi sites had no misclassification. Inaccuracies occurred mainly because of low sample numbers and errors in available maps of predictor variables. The highest rank for nature conservation was observed for the Teucrio-Juniperetum occupying 20% of the study area.Conclusions: Vegetation mapping using CTA is a valuable tool for rangeland monitoring and identification of key representative areas for nature conservation. An extrapolation of the model used might be feasible to regions adjacent to the central Hajar Mountains. © 2010 International Association for Vegetation Science.
Patzelt A.,Oman Botanic Garden |
Harrison T.,BG Group |
Knees S.G.,Center for Middle Eastern Plants |
Al Harthy L.,Oman Botanic Garden
Edinburgh Journal of Botany | Year: 2014
Sixty new or updated records of plant species are reported from the Sultanate of Oman, as a result of field work and herbarium research. Four taxa represent new records for Arabia, 26 are new records for Oman, and 30 represent an extended distribution within Oman. Some previously doubtful records are confirmed. Brief comments are given on the phytogeography and ecology of the taxa. Most new records have been made in mountainous areas, either in southern or northern Oman, mostly in areas that previously were botanically very poorly known or unexplored. © Trustees of the Royal Botanic Garden Edinburgh (2014).
Al-Sadi A.M.,Sultan Qaboos University |
Al-Alawi Z.A.,Oman Botanic Garden |
Deadman M.L.,Sultan Qaboos University |
Patzelt A.,Oman Botanic Garden
Canadian Journal of Plant Pathology | Year: 2014
The Oman Botanic Garden (OBG) was established in 2006 to conserve, display and research the plants and ethnobotany of Oman. However, thousands of seedlings and plants were killed over the past few years by diseases of unknown aetiology. This study was conducted to characterize the main fungal pathogens associated with foliar and root diseases of four wild plants at OBG. A survey showed that root rot, soft rot of stems, wilt symptoms, die back, leaf spots, canker and galls are the main disease symptoms associated with plants at OBG. Leaf spot was found to affect 100% of Aloe while mortality in African rattlebox, Echidnopsis and Caralluma due to root rot and/or wilt diseases reached 75%, 60% and 45%, respectively. Isolations followed by molecular-based identification of fungal pathogens showed that Alternaria alternata was associated with leaf spot of Aloe. Fusarium solani, Pythium aphanidermatum and Rhizoctonia solani were the most common pathogens associated with root diseases of African rattlebox, Echidnopsis and Caralluma, respectively. This is the first report of these diseases on the four wild plant species. © 2014 The Canadian Phytopathological Society.
Patzelt A.,Oman Botanic Garden
Edinburgh Journal of Botany | Year: 2011
Vegetation analysis reveals that the Themeda quadrivalvis tall-grass savannah in Oman, southern Arabia, forms a clearly defined belt with strong edaphic and geomorphological characteristics. The newly described association Desmodio gangetico-Themedetum quadrivalvis ass. nov. is interpreted as an impoverished easternmost outlier of the East African savannah. © 2011 Trustees of the Royal Botanic Garden Edinburgh.
Anderson A.B.,Oman Botanic Garden
51st World Congress of the International Federation of Landscape Architects, IFLA 2014 | Year: 2014
Andrew is a practicing landscape architect with nearly twenty years of professional experience in the design, management, conservation and restoration of landscapes. As the only landscape architect with a UNESCO Master of Science in World Heritage Management (University College Dublin), Andrew combines his expertise in natural and cultural resource management with a deep understanding of the ecological processes that shape the land and the value of landscape aesthetics. His work experience spans the private, public and academic sectors, and he has instructed landscape architecture university courses in Canada, Ireland and the Middle East. With a diverse range of professional experience, Andrew's current research interests include native and endemic plant conservation in arid environments, natural habitat restoration, landscape archaeology, ethnobotany, planting design, and design theory. A dedicated wanderer, he can usually be found exploring new places and meeting new people. Andrew is the landscape architect for the Diwan of Royal Court in the Sultanate of Oman, responsible for integrating emerging scientific knowledge about the native plants and landscapes of Oman with the design and construction of the Oman Botanic Garden. The Oman Botanic Garden will present the native and endemic plants of Oman, combined with the rich cultural heritage of the country.