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Nature 416:531–534Ĭayan DR, Das T, Pierce DW, Barnett TP, Tyree M, Gershunov A (2011) Future dryness in the southwest US and the hydrology of the early 21st century drought. LBM Status Report, pp 1–28īustamante CD, Nielsen R, Sawyer SA, Olsen KM, Purugganan MD, Hartl DL (2002) The cost of inbreeding in Arabidopsis. Hereditas 138:11–20īIOWEST (2010) Ash Meadows National Wildlife Refuge: vegetation community mapping and rare plants survey report, pp 1–149īLM (2012) Monitoring of the lower carson slough population of Amargosa Niterwort near Death Valley Junction, California 2010–2011. Biol Control 51:158–168īicknell RA, Lambie SC, Butler RC (2003) Quantification of progeny classes in two facultatively apomictic accessions of Hieracium. salsolae, a potential biological control agent of Russian thistle. Heredity (Edinb) 96:322–334īerner DK, Brickart WL, Cavin CA, Michael JL, Carter ML, Luster DG (2009) Best linear unbiased prediction of host-range of the facultative parasite Colletotrichum gloeosporioides f. Mol Ecol Notes 7:15–17īarcaccia G, Arzenton F, Sharbel TF, Varotto S, Parrini P, Lucchin M (2006) Genetic diversity and reproductive biology in ecotypes of the facultative apomict Hypericum perforatum L. mohavensis across its range.Īrnaud-Haond S, Belkhir K (2007) GENCLONE: a computer program to analyse genotypic data, test for clonality and describe spatial clonal organization. While the species is locally abundant and does not appear to suffer from inbreeding due to a small number of genets, continued local groundwater extraction coupled with forecasts of increasing regional desiccation due to accelerated climate change may combine to cause future population declines of N. There is not strong genetic differentiation among geographically separated clusters of plants. The relative frequency of the two reproductive strategies appears to vary among localities. mohavensis reproduces clonally and by outcrossing. In addition, three genotypes were sampled from individuals across the range of the species, a maximum distance of more than 50 km. Most individuals had unique genotypes however, there were many genotypes that were found in more than one individual and the most common genotype was sampled from 13 individuals. Out of 178 plants sampled from 35 different sample sites, there were 78 different multilocus genotypes. We isolated several polymorphic microsatellite loci and characterized genotypes from individuals spanning the range of the species as a means of inferring reproductive mode and population structure for the species. The species is restricted to moist alkaline soils of the Ash Meadows National Wildlife Refuge and nearby localities within the Amargosa River basin and is currently listed as endangered. Nitrophila mohavensis, commonly known as Amargosa niterwort, is a perennial forb classified in the family Chenopodiaceae.
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