A flora revisited: survey of vascular species in the upper Rock Creek ...
Transcript of A flora revisited: survey of vascular species in the upper Rock Creek ...
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A flora revisited: survey of vascular species in the upper Rock Creek watershed
Joy D. England
M.S. Student, Botany
Claremont Graduate University
28 November 2012
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Acknowledgments
• Bristlecone chapter of the California Native Plant Society
• Field assistants: Melinda Burns, Travis Columbus, Amanda Fisher, Forrest Freund, Stephen Ingram, Jennifer Pilapil, Cathy Rose
• Sue Weis and the Inyo National Forest
• Jan Bowers and Steve McLaughlin
• Jim and Sue King, Rock Creek Lakes Resort
• Andy Selters
• Dean W. Taylor
• Michelle Slaton
• Gary Wallace, USFWS
• Sierra Nevada Aquatic Research Laboratory (SNARL)
• Rancho Santa Ana Botanic Garden: Faculty, Staff, Postdocs and
Students
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I. Overview of study area II. Research objectives & methods III. Historical collections IV. Fieldwork, summer 2012 V. Project goals for 2013
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Mono Co.
Inyo Co.
Bishop 15 mi.
Tom’s Place
Mono Pass
Morgan Pass
Wheeler Ridge N
• Total area ca. 30 sq. mi.
• S to N orientation
• Elevation ca. 12000 to 7500 ft.
• Inyo National Forest
• S section in John Muir Wilderness
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Vegetation and Habitats
Lakes: lots of them!
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woodlands and forests
bottom right photo taken by: Jennifer Pilapil
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dry, rocky slopes
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meadows
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streamlets and seeps
Photo by: Travis Columbus
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moist slopes
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scrub
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riparian
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ponds
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alpine
bottom right photo taken by Travis Columbus
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1. Inventory the vascular plant taxa in the upper Rock Creek watershed and publish a voucher-based checklist
2. Document observed changes in species composition within the study area over the past century, comparing new data against earlier data from historical collections.
3. Quantify the floristic dissimilarity of the upper Rock Creek watershed to nearby local floras, in terms of species in common.
Research objectives
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1. Collect samples (vouchers)
2. Identify the vouchers
Determinations of my own collections
Annotations of other collections
Methods
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Herbarium Specimens
• Concrete evidence of this species’ existence in place and time
• Representative example of this species
• Scientific and cultural value
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Digital records of specimens
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Frank Warrington Peirson
Inset photo: Haverford College, PA, ca. 1889
• Amateur botanist in CA, early 20th century
• Rock Creek collections in 1930s-early 1940s
• 1938 self-published Plants of Rock Creek Lake Basin, Inyo County, California: A Check List
• 1942 addenda list • Reported 344 taxa for Rock
Creek Lake Basin • Peirson herbarium collection
housed at Rancho Santa Ana Botanic Garden (RSA)
(1865–1951)
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John Thomas Howell
• Cal Academy of Sciences
• 1946 Base Camp (Sierra Club) 7-day expedition to Mono Pass area
• Published checklist for that trip in 1946
• 52 taxa not appearing on Peirson’s list for Rock Creek
• 82 taxa reported for his “Florula of Mono Mesa,” 1947
(1903–1994)
Photo courtesy of: www.huntbot.andrew.cmu.edu
©2006 David McClurg Creative Commons Attribution-
NonCommercial 3.0 Unported License
Calochortus howellii
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“Rock Creek Lake Basin” a.k.a. Little Lakes Valley
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looking north along Rock Creek, Mosquito Flat area
The collections from Mosquito Flat…are especially noteworthy. The name Mosquito Flat is applied to an elongate area of meadow and canyonside that extends along Rock Creek for about a half mile below the start of the Mono Pass Trail. In the area explored, less perhaps than one-eighth square mile, 202 species and varieties were found. When it is recalled that in Smiley’s “Boreal Flora of the Sierra Nevada of California” 633 species are treated, the richness of the Mosquito Flat flora can be appreciated. I know of no place comparable to it in the Sierra Nevada. -J.T. Howell, 12 September 1946
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Draba sierrae
• Personal value
• Need for a contemporary Flora of the area
• Opportunity for historical comparison
• Rich plant diversity
• Alpine habitat and climate change
• Recreational value
Why a Flora of Rock Creek?
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18–24 May 2012
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Purshia tridentata
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Prunus emarginata
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Phacelia sp.
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Allium obtusum
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Allium campanulatum
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Heuchera sp.
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Pinus jeffreyi
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Astragalus purshii
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Astragalus purshii
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Gilia sp.
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Mentzelia ?veatchiana
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Camissonia sp.
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Smilacina stellata
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Wyethia mollis
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Calyptridium umbellatum
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Chamaesaracha nana
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Salix sp.
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11–18 June 2012
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Linanthus pungens
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Castilleja applegatei
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Caryophyllaceae
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Amelanchier utahensis
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Mimulus primuloides
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Phyllodoce breweri
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Leptosiphon nuttallii
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Salix arctica
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Ivesia?
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Draba sierrae
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Fritillaria pinetorum
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Castilleja linariifolia
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Geranium richardsonii
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Juniperus occidentalis
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Noteworthy collections
Astragalus monoensis
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2–9 July 2012
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Castilleja sp. OR spp.?
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Epilobium obcordatum
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Aquilegia pubescens
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Pedicularis attollens
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Penstemon davidsonii
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Penstemon newberryi
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Penstemon sp.
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Sedum roseum
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Pinus flexilis
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Chamaebatia foliolosa
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Lilium kelleyanum
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Apocynum androsaemifolium
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Aquilegia formosa
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22–28 July 2012
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with Forrest Freund and Amanda Fisher
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The Quest for Quillworts (Isoetes)
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photo: Amanda Fisher
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Isoetes bolanderi
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Gentiana newberryi
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Gentianopsis holopetala
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Eriogonum cf. ovalifolium
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Photo courtesy of Amanda Fisher
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Forrest collecting Isoetes occidentalis at Hidden Lakes
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Castilleja nana
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Dodecatheon sp.
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Pinus ?monticola
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Sisyrinchium
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Calochortus c.f. venustus
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13–27 August 2012
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with Cathy Rose
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Carex c.f. buxbaumii
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with Travis Columbus, along Sand Canyon Road
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Photo by: Travis Columbus
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Ipomopsis tenuituba
Photo: Travis Columbus
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Ipomopsis aggregata Photo: Travis Columbus
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Hybrid? Photo: Travis Columbus
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Mills Lake: 11650 ft. Photo: Travis Columbus
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Francis Lake
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Erigeron?
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Asteraceae
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Eriogonum c.f. lobbii
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16–22 September 2012
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Frasera speciosa
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Tsuga mertensiana
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with Jennifer Pilapil at Tsuga mertensiana collection site
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2013 fieldwork: looking ahead
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Penstemon papillatus photographed 4 July 2011
Saxifragaceae, E. Fork Campground area
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Arctostaphylos sp.
on trail above Rock Crk. Lodge, below juncture w/ Hilton Lakes Trail
In drainage below and E of Half Moon Pass
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Botrychium crenulatum a.k.a. “eyestrain Moonwort!”
photos by Tommy Stoughton
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B. crenulatum: pasture area adjacent to Rock Creek Lodge cabins
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Calyptridium pygmaeum
F.W. Peirson voucher from Heart Lake, Aug 3, 1937
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Challenging groups
Carex
Compositae
Photo: Travis Columbus
Poaceae
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Tamarack Bench area
Tamarack Lakes
Dorothy Lake Rock Creek Lake
Francis Lake
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“Mono Mesa”
Rock Creek Lake
“Mono Mesa” (Pointless Peak)
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Definitely need more samples!
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THANK YOU!