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Assessing seed zone efficacy using two-year old bluebunch wheatgrass
Holly R. Prendeville USDA-FS Pacific Northwest Research Station
Assessing seed zone efficacy using two-year old bluebunch wheatgrass - - PowerPoint PPT Presentation
Assessing seed zone efficacy using two-year old bluebunch wheatgrass - - PowerPoint PPT Presentation
Assessing seed zone efficacy using two-year old bluebunch wheatgrass Holly R. Prendeville USDA-FS Pacific Northwest Research Station Prairies and shrublands Invasive and non-native species Fire Land of Many Uses Healthy ecosystems BLM
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Invasive and non-native species
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Fire
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Land of Many Uses
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Healthy ecosystems
BLM
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Minimum winter temperature Aridity
Temperature Precipitation
Omernik’s Ecoregions level III
Provisional seed zone map
Bower et al. 2014 Ecol. Appl.
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Seed zones
Species specific or Empirical seed zones
Common gardens
Plant traits
Morphology Phenology
Wild populations
Climatic variables Ecoregions level III
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Seed zone map for bluebunch wheatgrass
11 zones
- St. Clair et al. 2013 Evol. Appl.
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Bluebunch wheatgrass
Pseudoroegneria spicata (PSSP)
Post-fire restoration Perennial Habitat range 230 - 2460 m 21 - 187 cm 3 - 11 C
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Nancy Shaw Francis Kilkenny Brad St. Clair
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Warmer/Dryer climate (Smaller plants) -> Wetter/Cooler climate (Larger plants) SEED ZONES
Anatone Goldar 1 3a 4 5 6a 6b 7b
Per transect (2=N & S) 7 sites 34 pops + 2 propagated lines
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Fall 2014
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Fall 2014
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Comments / Questions?
hollyrprendeville@fs.fed.us
Data collection 2015 & 2016
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Successful restoration
Survival Growth Reproduction Germination
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High survival in Year 1 Reduction in survival in Year 2
10 20 30 40 50 60 70 80 90 100 . Percent survival 2015 2016
2015 2016
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0.2 0.4 0.6 0.8 1 N1 N3a N4 N5 N6a N6b N7b S1 S3a S4 S5 S6a S6b S7b Important plant trait Common garden site Local Not Local Propagated lines
Is local best?
An example:
Plant material:
1 3a 4 5 6a 6b 7b 1 3a 4 5 6a 6b 7b
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Site F14,109 = 37.65 P<0.0001 Plant material source F2,109 = 2.00 P=0.1406 Site*Source F28,109 = 0.84 P=0.6950
Survival differs among sites
0.0 0.2 0.4 0.6 0.8 1.0 N1 N3a N4 N5 N6a N6b N7b S1 S3a S4 S5 S6a S6b S7b Proportion survival Common garden site Local Not local Propogated Lines
1 3a 4 5 6a 6b 7b 1 3a 4 5 6a 6b 7b
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10 20 30 40 50 60 70 N1 N3a N4 N5 N6a N6b N7b S1 S3a S4 S5 S6a S6b S7b Mean growth Yr1 to Yr2 (cm) Common garden site Local Not local Propagated lines
Growth differs plant material source across sites
Site F14,109 = 16.38 P<0.0001 Plant material source F2,109 = 27.67 P<0.0001 Site*Source F28,109 = 1.96 P=0.008
1 3a 4 5 6a 6b 7b 1 3a 4 5 6a 6b 7b
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Reproductive stalks produced differs by plant material source across sites
Site F14,108 = 33.10 P<0.0001 Plant material source F2,108 = 18.70 P<0.0001 Site*Source F28,108 = 2.92 P<0.0001
25 50 75 100 125 150 175 200 225 N1 N3a N4 N5 N6a N6b N7b S1 S3a S4 S5 S6a S6b S7b Mean number of reproductive stalks Common garden site Local Not local Propagated lines
1 3a 4 5 6a 6b 7b 1 3a 4 5 6a 6b 7b
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1 3a 4 5 6a 6b 7b
2 4 6 8 10 12 14 N1 N3a N4 N5 N6a N6b N7b Mean number of filled seeds per stalk Common garden sites Local Not local Propagated lines
Site F7,69 = 18.82 P<0.0001 Plant material source F7,69 = 17.40 P<0.0001 Site*Source F7,69 = 1.06 P=0.3991
Seed production differs by site and plant material source
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20 40 60 80 100 120 140 160 180 200 N1 N3a N4 N7b S1 S3a S4 S7b Days to germination Local Not local Propagated lines
March February January December November
Field germination timing varies by site
(Time lapse cameras)
Seed zone
Site F6,266 = 134.33 P<0.0001 Plant material source F2,266 = 1.00 P=0.3682 Site*Source F10,166 = 2.89 P=0.0019
Zero 1 seedling
1 3a 4 7b 1 3a 4 7b
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0.05 0.1 0.15 0.2 0.25 0.3 0.35 N1 N3a N4 N7b S1 S3a Proportion germination Site Local Not Local Propagated lines
Site F5,2682 = 13.17 P<0.0001 Plant material source F2,2682 = 0.63 P=0.5321 Site*Source F10,2682 = 3.69 P<0.001
Proportion of germination differs by seed source across sites
1 3a 4 7b 1 3a
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For successful restoration is local best?
Survival No Growth Yes, depending on site Reproduction Yes, depending on site Germination Yes, depending on site
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Survival and reproduction data
2015-year 1 2016-year 2 2017-year 3* 2020-year 5 2030-year 10 2040-year 20
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Conclusions
Preliminary data suggest that using seed zones guidelines should improve restoration success
Transplanting seedlings
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Private Landowners
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Comments / Questions?
hollyrprendeville@fs.fed.us
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Seed zones on Google maps
https://www.fs.fed.us/wwetac/threat- map/TRMSeedZoneMapper.php https://www.fs.fed.us/wwetac/threat-map/TRMSeedZoneMobile.php