Lupinus nipomensis

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Lupinus nipomensis
Lupinus nipomensis flower.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Lupinus
Species:
L. nipomensis
Binomial name
Lupinus nipomensis

Lupinus nipomensis is a species of lupine known by the common name Nipomo Mesa lupine. It is endemic to the Guadalupe-Nipomo Dunes on the California Central Coast. Specifically, the plant is limited to the Guadalupe Dunes at the southern border of San Luis Obispo County. There are five to seven colonies growing in a strip of sand dunes measuring less than three square miles in area. [1] These colonies are generally considered to make up a single population. [2] The number of individual plants remaining has been observed to vary between 100 and 1,800, its abundance is not correlated to precipitation, is highly variable and exact mechanisms driving abundance unknown. [1] This is a California state and federally listed endangered species. [3]

Contents

Nipomo Mesa lupine is a small, spreading annual herb with a stem reaching 10 to 50 centimeters in length. Each palmate leaf is made up of 5 to 7 narrow, succulent leaflets between 1 and 1.5 centimeters long and just a few millimeters wide. The herbage is hairy in texture, but can sometimes be glaborous and new stems emerge in equidistant sets of threes. [4] When first emerging the seedlings have a reddish/purple hue from anthocyanin to help reduce ultraviolet damage. The inflorescence is a small, crowded raceme of flowers each 6 to 7 millimeters long. The flower is pink with a lighter, sometimes yellowish spot on its banner. The fruit is a legume pod up to 2 centimeters long. No traditional pollinators have been found to be associated with this plant - however, it does host a diverse suite of other arthropod interactions. [5] Notably, they are visited by Trigonoscuta (Sand weevil) species which are potentially rare and endemic to sand dunes. It was found that they are negatively impacted by, a gall maggot from the family Anthomyiidae, Delia lupini. D. lupini creates galls on the plant and when vacated, have been observed to host other pests such as Scaphomorphus beetles.

Conservation

This plant is restricted to a small system of sand dunes all located on privately owned land. [2] The biggest threats to its existence include invasive species of plants, particularly perennial veldtgrass (Ehrharta calycina), and herbivory by Botta's pocket gopher (Thomomys bottae). [1] They also face increased decrease in habitat due to land use change causing habitat conversion or habitat fragmentation. [6] Recent studies have found that they have specific microhabitat preferences, overlooked in the past, that could be utilized to improve conservation efforts. [7] More specifically, the species often preferred less exposed microhabitats such as dune swales and north facing slopes. Scientists and stakeholders are drafting plans to save the lupine from extinction. [8]

Related Research Articles

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References

  1. 1 2 3 "Plant Profile: Lupinus nipomensis". Center for Plant Conservation.
  2. 1 2 USFWS. Final Rule for Endangered Status for Four Plants from South Central Coastal California. Federal Register March 20, 2000.
  3. ↑ "Nipomo Lupine Recovery". Cheadle Center for Biodiversity and Ecological Restoration. May 6, 2017. Retrieved 2020-10-24.
  4. ↑ Walters, Dirk; Walters, Bonnie. "Taxonomy, Demography and Ecology of Lupinus nipomensis Eastwood". Department of Biology at Calpoly SLO.
  5. ↑ Motta, Carina I.; Luong, Justin C.; Seltmann, Katja C. (March 2022). "Plant–arthropod interactions of an endangered California lupine". Ecology and Evolution. 12 (3): e8688. doi: 10.1002/ece3.8688 . PMC   8928892 . PMID   35342564.
  6. ↑ Marshall, Jasmine (November 26, 2001). "Many rare local plants face extinction". Lompoc Record. Retrieved 2020-10-24.
  7. ↑ Luong, Justin; Nolan, Madeline; Stratton (2019). "The importance of pilot studies and understanding microhabitat requirements when reintroducing endemic plants during coastal dune restoration". Journal for Coastal Conservation. 23 (3): 553–562. doi:10.1007/s11852-019-00684-0. S2CID   133916043.
  8. ↑ Martinez, Francisco (May 21, 2020). "On the 15th anniversary of Endangered Species Day, SLO County has 47 federally listed threatened and endangered plants, animals to be mindful of". New Times San Luis Obispo. Retrieved 2020-10-24.
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