Abstract
Coreopsis tinctoria (Asteraceae) is a widely-distributed North American prairie flowering C3 annual. We hypothesized priority effects of planting C. tinctoria before a C4 grass would decrease interspecific competition. Coreopsis tinctoria was grown in south-central Texas (29°35′N, 98°37′W) with Bouteloua curtipendula (Poaceae), a widespread C4 prairie grass. The two species were planted in a de Wit replacement series with plant ratios of 12:0, 10:2, 8:4, 6:6, 4:8, 2:10, and 0:12 (C. tinctoriaa: B. curtipendula). There were five planting offsets with C. tinctoria planted 60 d before B. curtipendula (–60), 30 d before (–30), at the same time (0), 30 d after (30), and 60 d after (60). There were significant species by offset, species by frequency, and offset by frequency interactions. Coreopsis tinctoria produced the greatest total dry mass per plant in the 60 d before offset. Coreopsis tinctoria was competitively favored when planted 60 d before B. curtipendula and B. curtipendula was favored when planted 30 and 60 d before C. tinctoria. Results suggest a synergistic benefit from both spatial gaps and priority effects.
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Claims 5
Claim · model-written summary
Species, offset, and frequency showed significant pairwise interactions.
- Taxon
- Coreopsis tinctoria
Coreopsis tinctoriat0 - Outcome
- species by offset, species by frequency, and offset by frequency interactionse0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant species by offset, species by frequency, and offset by frequency interactions”
t0“Coreopsis tinctoria”
Claim · model-written summary
Coreopsis total dry mass per plant was greatest when planted 60 days before the grass.
- Taxon
- Coreopsis tinctoriaCoreopsis tinctoriae0
- Treatment
- 60 d before offsete0
- Interactor
- a C4 Grasst0other
- Outcome
- total dry mass per plante0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coreopsis tinctoria produced the greatest total dry mass per plant in the 60 d before offset”
t0“Priority Effects Allow Coreopsis tinctoria to Avoid Interspecific Competition with a C4 Grass”
Claim · model-written summary
Coreopsis was competitively favored when planted 60 days before Bouteloua.
- Taxon
- Coreopsis tinctoriaCoreopsis tinctoriae0
- Treatment
- planted 60 d before B. curtipendulae0
- Interactor
- B. curtipendula
Bouteloua curtipendulae0other - Outcome
- competitively favorede0
- Direction
- favorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coreopsis tinctoria was competitively favored when planted 60 d before B. curtipendula”
Claim · model-written summary
Bouteloua was competitively favored when planted 30 and 60 days before Coreopsis.
- Taxon
- B. curtipendulaBouteloua curtipendulae0
- Treatment
- planted 30 and 60 d before C. tinctoriae0
- Interactor
- C. tinctoriaCoreopsis tinctoriae0other
- Outcome
- favorede0
- Direction
- favorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. curtipendula was favored when planted 30 and 60 d before C. tinctoria”
Claim · model-written summary
The authors infer a synergistic benefit of spatial gaps and priority effects.
- Taxon
- Coreopsis tinctoriaCoreopsis tinctoriat0
- Outcome
- synergistic benefite0
- Qualifier
- both spatial gaps and priority effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results suggest a synergistic benefit from both spatial gaps and priority effects”
t0“Coreopsis tinctoria”