Abstract
Seasonally flooded wetlands are periodically drained due to dry-season precipitation patterns. In the dry season, soil moisture can decrease to a level where wetland vegetation communities are subjected to drought stress. To understand the effects of drought conditions on the structure of seasonal wetland communities, we conducted a post-flooding reciprocal transplant experiment among three grass species across a soil moisture availability gradient at Archbold Biological Station, Florida, USA. We also manipulated the intensity of competition. We found that Cutthroat, the most upland species, responded physiologically to low soil moisture via root growth and leaf tissue moisture content, while the two flood-adapted species (Maidencane, Blue Maidencane), modulated growth and exhibited a dieback-resprout “drought deciduous” mechanism. These differential phenotypic responses, and not competition, were responsible for growth patterns in Florida seasonal wetlands in drought conditions.
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Claims 7
Claim · model-written summary
Cutthroat responded to low soil moisture through root growth.
- Taxon
- Cutthroat
.jpg?width=60)
Amadina fasciatae0 - Treatment
- low soil moisturee0
- Outcome
- root growthe0
- Setting
- Archbold Biological Station, Florida, USAe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Cutthroat, the most upland species, responded physiologically to low soil moisture via root growth”
e1“at Archbold Biological Station, Florida, USA”
Claim · model-written summary
Cutthroat responded to low soil moisture through leaf tissue moisture content.
- Taxon
- CutthroatAmadina fasciatae0
- Treatment
- low soil moisturee0
- Outcome
- leaf tissue moisture contente0
- Setting
- Archbold Biological Station, Florida, USAe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cutthroat, the most upland species, responded physiologically to low soil moisture via root growth and leaf tissue moisture content”
e1“at Archbold Biological Station, Florida, USA”
Claim · model-written summary
Maidencane modulated growth under drought.
Not reportedDirection
Verbatim
e0“the two flood-adapted species (Maidencane, Blue Maidencane), modulated growth”
e1“in Florida seasonal wetlands in drought conditions”
Claim · model-written summary
Blue Maidencane modulated growth under drought.
Not reportedDirection
Verbatim
e0“the two flood-adapted species (Maidencane, Blue Maidencane), modulated growth”
e1“in Florida seasonal wetlands in drought conditions”
Claim · model-written summary
Maidencane exhibited a dieback-resprout drought-deciduous response.
Not reportedDirection
Verbatim
e0“the two flood-adapted species (Maidencane, Blue Maidencane), modulated growth and exhibited a dieback-resprout “drought deciduous” mechanism.”
Claim · model-written summary
Blue Maidencane exhibited a dieback-resprout drought-deciduous response.
Not reportedDirection
Verbatim
e0“the two flood-adapted species (Maidencane, Blue Maidencane), modulated growth and exhibited a dieback-resprout “drought deciduous” mechanism.”
Claim · model-written summary
Species phenotypic differences, rather than competition, explained drought growth patterns.
- Outcome
- growth patternse0
- Qualifier
- differential phenotypic responses, and not competitione0
- Setting
- Floridae0
Not reportedTaxon
Verbatim
e0“These differential phenotypic responses, and not competition, were responsible for growth patterns in Florida seasonal wetlands in drought conditions.”