Agave Shawii Var Shawii - Shaw's Agave

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Agave shawii var shawii - Shaw's agave Most Year of Most Occurrence Land Natural Occurrence ID IMA? MU Preserve Land Owner Recent Recent Pop Threats Source Name Manager Population? Pop Size Survey AGSH_1BFSP001 Yes 1 Border Field State Border Field California California 1 2011 Yes Biggest threat is loss of individuals. Threat to out- MOM; Park State Park Department Department crossing given life history traits and small number of Vanderplank of Parks and of Parks and individuals. Sexual reproduction and seedling 2012; Masilko Recreation Recreation recruitment are low for this taxon. 2007 AGSH_1CNMO002 Yes 1 Cabrillo National Cabrillo National National 30 2011 Partially Biggest threat is loss of individuals. Sexual MOM; Rare Monument National Park Service Park Service reproduction and seedling recruitment low for this Plant 2016; Monument taxon. Other threats include direct impacts and Vanderplank human trespassing. Low level of nonnative forbs and 2012 grasses and competition with native plants. Erosion and roads/trails are adjacent to occurrence. Some plants fall within landscaped areas. AGSH_1TISL003 No 1 Tijuana Slough Tijuana U.S. Fish U.S. Fish 88 2016 No Altered hydrology and urban runoff in over 75% of MOM; Rare NWR Visitor Slough and Wildlife and Wildlife mapped occupied extent. Some threat from soil Plant 2016; Center National Service Service compaction. Authorized trails and human use near CCH 2013; Wildlife plants which are highly managed as part of Reiser 1994 Refuge landscaping at visitor center. AGSH_7SCSB006 Yes 6 South Carlsbad South California California 1 2015 No Nonnative forbs, nonnative grasses, nonnative Rare Plant State Beach Carlsbad Department Department woody plants, trash dumping, trampling, erosion and 2014, 2015 State Beach of Parks and of Parks and slope movement. Recreation Recreation AGSH_7GFTR004 Yes 7 Guy Fleming Trail Torrey Pines California California 5 2011 No Population is sterile? Sexual reproduction and MOM; State Natural Department Department seedling recruitment low for this taxon. Vanderplank Reserve of Parks and of Parks and 2012; CNDDB Recreation Recreation 2013 AGSH_7SELA005 Yes 7 San Elijo Lagoon San Elijo California California 45 2016 No Erosion in 25-50% of mapped extent and illegal use Rare Plant Lagoon Department Department of closed trail with signs of hikers and dogs. 2014, 2015, Ecological of Fish and of Fish and 2016 Reserve Wildlfie Wildlife.

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Relative Genetic Diversity of the Rare and Endangered Agave Shawii Ssp
Received: 17 July 2020 | Revised: 9 December 2020 | Accepted: 14 December 2020 DOI: 10.1002/ece3.7172 ORIGINAL RESEARCH Relative genetic diversity of the rare and endangered Agave shawii ssp. shawii and associated soil microbes within a southern California ecological preserve Jeanne P. Vu1 | Miguel F. Vasquez1 | Zuying Feng1 | Keith Lombardo2 | Sora Haagensen1,3 | Goran Bozinovic1,4 1Boz Life Science Research and Teaching Institute, San Diego, CA, USA Abstract 2Southern California Research Learning Shaw's Agave (Agave shawii ssp. shawii) is an endangered maritime succulent growing Center, National Park Services, San Diego, along the coast of California and northern Baja California. The population inhabiting CA, USA 3University of California San Diego Point Loma Peninsula has a complicated history of transplantation without documen- Extended Studies, La Jolla, CA, USA tation. The low effective population size in California prompted agave transplanting 4 Biological Sciences, University of California from the U.S. Naval Base site (NB) to Cabrillo National Monument (CNM). Since 2008, San Diego, La Jolla, CA, USA there are no agave sprouts identified on the CNM site, and concerns have been raised Correspondence about the genetic diversity of this population. We sequenced two barcoding loci, rbcL Goran Bozinovic, Boz Life Science Research and Teaching Institute, 3030 Bunker Hill St, and matK, of 27 individual plants from 5 geographically distinct populations, includ- San Diego CA 92109, USA. ing 12 individuals from California (NB and CNM). Phylogenetic analysis revealed the Emails: [email protected]; gbozinovic@ ucsd.edu three US and two Mexican agave populations are closely related and have similar ge- netic variation at the two barcoding regions, suggesting the Point Loma agave popu- Funding information National Park Services (NPS) Pacific West lation is not clonal.
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