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Gillespie et al (cba 2013) june 2013 final
1. Botanical exploration of the Soper River:
plant discoveries in the Canadian Arctic
Lynn J. Gillespie, Paul C. Sokoloff, Jeffery M. Saarela, Roger D. Bull
19. NEW DISCOVERIES
4 species new to the
Eastern Canadian Arctic Archipelago
• Andromeda polifolia (Ericaceae)
• Orthilia secunda (Ericacae)
• Calamagrostis stricta subsp.
stricta (Poaceae)
• Salix fuscescens (Salicaceae)
22. NEW DISCOVERIES
new records of rare species - SE Baffin I
• Viscaria alpina (Caryophyllaceae)
• Plantago maritima (Plantaginaceae)
• 5 sedges (Carex arctogena, C. bicolor, C. gynocrates, C. vaginata, C. williamsii)
• 3 rushes (Luzula wahlenbergii, L. multiflora subsp. frigida, Juncus trifidus
• 2 grasses (Calamagrostis canadensis subsp. langsdorfii, C. purpurascens),
25. • accurate information on species distributions
• complete floristic inventories
NEW ARRIVALS OR LONG ESTABLISHED?
Most new records likely
long established species
Cryptogramma perhaps
recent natural spread N?
26. Arctic floristic research – significance
1. baseline data for monitoring
climate-induced change in arctic
vegetation
2. update published floristic works on
the Canadian Arctic
3. new data for the Arctic Flora of
Canada and Alaska Project
4. samples for systematic and
phylogeographic studies
5. samples for Arctic Flora
barcoding project
Katannilik = place of waterfallsKuujuak River = Big River
From its first scientific exploration over80 years ago, the Soper River valley on southern Baffin Island has been known to host a diverse number of plant species. However, until recently this low arctic hotspot has seen surprisinglylittle floristic research. Soper discovered stands of large willow shrubs (11’-12’ high), and foundspecies more characteristic of low arctic tundra
7 first records for the Canadian Arctic Archipelago. Two findings also represent new families for the Arctic Islands.
Also first record for NunavutCalcareous in FNA, acidic rock hereVery scattered distribution across North America and Eurasia, mostly rocky outcrops in boreal forest, some low arctic sites
sterile triploid hybrid between C. lapponicum and C. pallasiiOriginally known only from Svalbard and Novaya Zemlya, High Arctic islands N of Norway and Russia More common on Svalbard than parents, often occurring in the absence of one or both parentSterile triploid hybrid, app spreading by stem/rhizome segments
Cody et al first described the species for Canada in 1988 from 4 localities in N QC and S NU.
Sterile plants
Andromeda & Salix fuscescens – 2nd record for the CAA (the 1st from Victoria Island).
only the 2nd collection for the Canadian Arctic ArchipelagoThe first we made on Victoria Island in 2008
New records for many low Arctic species rare in the Arctic Islands and known previously only one or a few sites on southern Baffin Island.Images – Viscaria & Carexarctogena
Corallorhizatrifida (Orchidaceae) was firstreported from the CAA in 1997 from a single station at Auyuittuq National Park. We collected it on VI in 2008 and 2010.
We also found two occurrences of Hordeumjubatum(Poaceae) in Kimmirut. This weed is a recent introduction from the south and is the only known introduced species in the region.
