Abstract
One method of obtaining seeds of native plants may be to let seeds fall to the soil surface and collect them by vacuuming. We evaluated this method by comparing plants that germinated from material vacuumed after fire with plants that germinated from seeds found in cores taken from the top 25 mm (1 in) of soil in a Florida flatwoods plant community before and after fire. A total of 76 species were identified in cores, of which 66 species were found before, and 60 species after, fire. No differences attributable to fire were found for seed density (3261 seeds/m2 [2740/yd2]) or concentration in cores (282 seeds/kg [128/lb]). Vacuumed material contained seeds of 58 species (54 in common with cores) with a density of 170 seeds/m2 [142/yd2] and a concentration of 451 seeds/kg (204/lb). Species correlations between cores and vacuumed material were significant for 19 of 46 species whose density was > 1/m2 in cores. Seeds of 10 species in vacuumed material were common as plants in standing vegetation, but seeds of 13 species (mostly shrubs) growing on the site were not in cores or vacuumed material. Vacuuming the soil surface may be effective for obtaining a diverse supply of seeds for herbaceous plants common on flatwoods after fire. Some species in vacuumed material, however, may not be in proportion to seeds in soil and the vacuumed material will not include seeds of some shrubs that characterize Florida flatwoods communities.
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Claims 10
Claim · model-written summary
Cores yielded 76 species, with 66 before and 60 after fire.
- Taxon
- plantsViridiplantaee1
- Outcome
- species were identified in corese0
- Value
- 76 speciese0
- Qualifier
- 66 species were found before, and 60 species after, firee0
Verbatim
e0“A total of 76 species were identified in cores, of which 66 species were found before, and 60 species after, fire”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Fire did not alter seed density in cores.
- Taxon
- plantsViridiplantaee1
- Treatment
- firee0
- Outcome
- seed densitye0
- Direction
- No differencese0
- Value
- 3261 seeds/m2e0
Not reportedComparator
Verbatim
e0“No differences attributable to fire were found for seed density (3261 seeds/m2 [2740/yd2])”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Fire did not alter seed concentration in cores.
- Taxon
- plantsViridiplantaee1
- Treatment
- firee0
- Outcome
- concentration in corese0
- Direction
- No differencese0
- Value
- 282 seeds/kge0
Not reportedComparator
Verbatim
e0“No differences attributable to fire were found for seed density (3261 seeds/m2 [2740/yd2]) or concentration in cores (282 seeds/kg [128/lb])”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Vacuumed material contained seeds from 58 species, including 54 also found in cores.
Verbatim
e0“Vacuumed material contained seeds of 58 species (54 in common with cores)”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Vacuumed material had a seed density of 170 seeds/m2.
- Taxon
- plantsViridiplantaee1
- Outcome
- densitye0
- Value
- 170 seeds/m2e0
Verbatim
e0“with a density of 170 seeds/m2 [142/yd2]”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Vacuumed material had a seed concentration of 451 seeds/kg.
- Taxon
- plantsViridiplantaee1
- Outcome
- concentratione0
- Value
- 451 seeds/kge0
Verbatim
e0“a concentration of 451 seeds/kg (204/lb)”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Core and vacuum species densities were significantly correlated for 19 of 46 species above one seed per square meter in cores.
- Taxon
- plantsViridiplantaee1
- Outcome
- Species correlationse0
- Value
- 19 of 46 speciese0
- Comparator
- cores and vacuumed materiale0
Not reportedDirection
Verbatim
e0“Species correlations between cores and vacuumed material were significant for 19 of 46 species whose density was > 1/m2 in cores”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Seeds of 10 species in vacuumed material were common in standing vegetation.
- Taxon
- plantsViridiplantaee1
- Outcome
- Seeds of 10 species in vacuumed materiale0
- Value
- 10 speciese0
Verbatim
e0“Seeds of 10 species in vacuumed material were common as plants in standing vegetation”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Seeds of 13 species, mostly shrubs, occurring on site were missing from both cores and vacuumed material.
- Taxon
- plantsViridiplantaee1
- Outcome
- seeds of 13 speciese0
- Value
- 13 speciese0
- Qualifier
- mostly shrubse0
Verbatim
e0“seeds of 13 species (mostly shrubs) growing on the site were not in cores or vacuumed material”
t0“PLANT COMMUNITY”
e1“native plants”
Claim · model-written summary
Surface vacuuming may obtain diverse herbaceous seeds after fire, though proportions and shrub coverage are incomplete.
Verbatim
e0“Vacuuming the soil surface may be effective for obtaining a diverse supply of seeds for herbaceous plants common on flatwoods after fire”
The same questions in other papers
fire · molecular: metabolites · Viridiplantae (plants)Positive and negative results
1 in the opposite direction
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.