Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Floristic Discoveries and Biodiversity
of the Canadian Arctic Vascular Plant Flora
J.M. Saarela, L.J. Gillespie, P.C. Soko...
Polar Continental
Shelf Program
Research Funding
Arctic Plant Taxonomy
a small flora but major challenges
• numerous taxonomically difficult species groups
- hybridization...
• 91 families
• 420 genera
• 2218 species
Elven et al. (2011)
http://nhm2.uio.no/paf/
Checklist of the Panarctic Flora - V...
Carex
Ranunculus
Salix
Oxytropis
Potentilla
Draba
Saxifraga
Artemisia Poa
Canadian Arctic Flora
Vascular Plants
c. 1256 ta...
Floristics
the study of the distribution, number, types, and
relationships of plant species in an area or areas
Arctic Floristic Research
• critical baseline data
 understanding change
in vegetation
 may inform monitoring
• detailed...
http://arcticplants.myspecies.info/
See our poster for details…
theglobeandmail.com – 23 June 2014
CMN Arctic Floristic Studies
So far….over 5000 new Canadian
Arctic plant collections
 Based on study of all
collections made in area from
ca. 1940 to 2009, including
ours, the vascular flora of
the region c...
Festuca
brachyphylla
Poaceae
Mertensia maritima
subsp. tenella
Boraginaceae
Carex
holostoma
Cyperaceae
Carex
lachenalii
Cy...
Extralimital Balsam Poplar (Populus balsamifera)
Saarela et al. 2012, Arctic
Aiken et al. (2007)
• 341 species
• 349 taxa
Our fieldwork: 12 species and 3 families*
new to Canadian Arctic Archipelago
341
368
349
375
320
330
340
350
360
370
380
A...
Juncaginaceae*
Triglochin palustris
marsh arrowgrass
Bull
Bull
FNA
Amaranthaceae*
Suaeda calceoliformis
Horned sea blite
5 sites on Victoria Island
FNABull
Bull
Gillespie
Pteridaceae*
Cryptogramma stelleri
Steller’s rockbrake
FNA
Sokoloff
Sokoloff
Primulaceae
Primula egaliksensis
Greenland primrose
Gillespie
Porsild & Cody 1980
Orchidaceae
Platanthera obtusata
northern bog orchid
Bull Gillespie
FNA
Ranunculaceae
Coptidium × spitsbergense
Svalbard buttercup
Gillespie
Cody et al. 1988
Lentibulariaceae
Utricularia ochroleuca
bladderwort
Porsild & Cody 1980
Potamogetonaceae
Stuckenia subretusa
pondweed
New to
Canada
• c. 19 species
new to the
western CAA
• c. 30 species
new to Victoria
Island
• increased # of
species from
231 to c. 261
...
Cyperaceae
Eriophorum brachyantherum
Closed-sheath cotton grass
Poaceae
Festuca hyperborea
Arctic fescue
Aiken et al. 2007...
Lentibulariaceae
Pinguicula vulgaris
Common butterwort
accurate info on current species distributions are needed to
understand possible future change
Most new records
likely lon...
Puccinellia banksiensis
Banks Island Alkaligrass
described from Banks Island 2008,
discovered on Victoria I. in 2008,
adja...
*
many new
localities
NOT at risk
Asteraceae
Symphyotrichum pygmaeum
Pygmy aster
“May be at risk” (NWT 2011)
Aiken et al. ...
SE Baffin Island
many new records
of rare species
• Viscaria alpina (Caryophyllaceae)
• Plantago maritima (Plantaginaceae)...
Bull
Hordeum jubatum
foxtail barley
Some underexplored areas
Floras of most (all?) Arctic islands probably incompletely known
Sokoloff
National Herbarium of Canada
collections.nature.ca
CMN
Collections
Online
Saarela arctic change 2014
Upcoming SlideShare
Loading in …5
×

Saarela arctic change 2014

826 views

Published on

J.M. Saarela, L.J. Gillespie, P.C. Sokoloff and R.D. Bull.
Floristic Discoveries and Biodiversity of the Canadian Arctic Vascular Plant Flora. Presented by J.M. Saarela at Arctic Change 2014, 8-12 December 2014, Ottawa, ON, Canada.

Published in: Environment
  • Be the first to comment

  • Be the first to like this

Saarela arctic change 2014

  1. 1. Floristic Discoveries and Biodiversity of the Canadian Arctic Vascular Plant Flora J.M. Saarela, L.J. Gillespie, P.C. Sokoloff and R.D. Bull Centre for Arctic Knowledge and Exploration This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
  2. 2. Polar Continental Shelf Program Research Funding
  3. 3. Arctic Plant Taxonomy a small flora but major challenges • numerous taxonomically difficult species groups - hybridization - high polyploidy - frequent asexual reproduction • many different regional treatments - widespread species (circumpolar) - different species concepts (Russia vs. Euro vs. NA) - different names • few or no plant collections from many remote areas inventories not comprehensive - sites difficult and expensive to access
  4. 4. • 91 families • 420 genera • 2218 species Elven et al. (2011) http://nhm2.uio.no/paf/ Checklist of the Panarctic Flora - Vascular Plants
  5. 5. Carex Ranunculus Salix Oxytropis Potentilla Draba Saxifraga Artemisia Poa Canadian Arctic Flora Vascular Plants c. 1256 taxa c. 965 species
  6. 6. Floristics the study of the distribution, number, types, and relationships of plant species in an area or areas
  7. 7. Arctic Floristic Research • critical baseline data  understanding change in vegetation  may inform monitoring • detailed info about plants of specific regions (e.g., parks, communities, islands) • data for flora projects • samples for systematic, phylogeographic, DNA barcoding studies, etc.
  8. 8. http://arcticplants.myspecies.info/ See our poster for details…
  9. 9. theglobeandmail.com – 23 June 2014 CMN Arctic Floristic Studies
  10. 10. So far….over 5000 new Canadian Arctic plant collections
  11. 11.  Based on study of all collections made in area from ca. 1940 to 2009, including ours, the vascular flora of the region comprises 268 taxa (265 species), of which 215 are in the Park  16% increase from the first study of the area in 1990  48 taxa new to the region  54 taxa newly recorded for TNNP Tuktut Nogait National Park and vicinity, NWT Saarela et al. 2013, Phytotaxa
  12. 12. Festuca brachyphylla Poaceae Mertensia maritima subsp. tenella Boraginaceae Carex holostoma Cyperaceae Carex lachenalii Cyperaceae Kobresia sibirica Cyperaceae Some species new to Tuktut Nogait National Park and vicinity
  13. 13. Extralimital Balsam Poplar (Populus balsamifera) Saarela et al. 2012, Arctic
  14. 14. Aiken et al. (2007) • 341 species • 349 taxa
  15. 15. Our fieldwork: 12 species and 3 families* new to Canadian Arctic Archipelago 341 368 349 375 320 330 340 350 360 370 380 Aiken et al. (2007) Gillespie et al. (in review) species taxa including new literature records, post 2007 c. 8% increase
  16. 16. Juncaginaceae* Triglochin palustris marsh arrowgrass Bull Bull FNA
  17. 17. Amaranthaceae* Suaeda calceoliformis Horned sea blite 5 sites on Victoria Island FNABull Bull
  18. 18. Gillespie Pteridaceae* Cryptogramma stelleri Steller’s rockbrake FNA Sokoloff Sokoloff
  19. 19. Primulaceae Primula egaliksensis Greenland primrose Gillespie Porsild & Cody 1980
  20. 20. Orchidaceae Platanthera obtusata northern bog orchid Bull Gillespie FNA
  21. 21. Ranunculaceae Coptidium × spitsbergense Svalbard buttercup Gillespie Cody et al. 1988
  22. 22. Lentibulariaceae Utricularia ochroleuca bladderwort Porsild & Cody 1980
  23. 23. Potamogetonaceae Stuckenia subretusa pondweed New to Canada
  24. 24. • c. 19 species new to the western CAA • c. 30 species new to Victoria Island • increased # of species from 231 to c. 261 Victoria Island – new records
  25. 25. Cyperaceae Eriophorum brachyantherum Closed-sheath cotton grass Poaceae Festuca hyperborea Arctic fescue Aiken et al. 2007 Aiken et al. 2007
  26. 26. Lentibulariaceae Pinguicula vulgaris Common butterwort
  27. 27. accurate info on current species distributions are needed to understand possible future change Most new records likely long established species Newly arrived or long established species?
  28. 28. Puccinellia banksiensis Banks Island Alkaligrass described from Banks Island 2008, discovered on Victoria I. in 2008, adjacent mainland in 2009
  29. 29. * many new localities NOT at risk Asteraceae Symphyotrichum pygmaeum Pygmy aster “May be at risk” (NWT 2011) Aiken et al. 2007
  30. 30. SE Baffin Island many new records of rare species • 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) • Sibbaldia procumbens (Rosaceae), Corallorhiza trifida (Orchidaceae) • …and many more Viscariaalpina Carexarctogena
  31. 31. Bull Hordeum jubatum foxtail barley
  32. 32. Some underexplored areas Floras of most (all?) Arctic islands probably incompletely known
  33. 33. Sokoloff National Herbarium of Canada
  34. 34. collections.nature.ca CMN Collections Online

×