Abstract
A greenhouse experiment was designed to investigate the correlations between waterlogging and aeration, and associated changes in pH, redox potentials and sulfide concentrations, on the growth of Spartina alterniflora Loisel. Elemental concentrations of the aerial and root material were determined and used for correlations with growth response. Redox potentials adjusted to pH 7 (Eh 7) ranged from −184 mv to 5 mv and were highly correlated (r) with aerial and root dry weight biomass (.97 and .97, respectively) and plant height (1.0). The range of soil pH at the conclusion of the study was 6.07 to 6.74 and was negatively correlated with aerial and root dry weight biomass. Sulfide concentrations ranged from 10–2 to 10–7 m and vorrelations with aerial and root dry weights and height were −.85, −.85 and −.87, respectively. High negative correlations were found between sodium and sulfur concentrations and S. alterniflora growth. Positive correlations between potassium, phosphorus, manganese, zinc, copper, iron and growth response were also observed. Correlations of elemental concentrations of the plants with redox potentials and/or pH suggest that these two physical variables may be responsible in part for the regulation of 5. alterniflora growth in nature by regulating availability of nutritional elements.
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Claims 10
Claim · model-written summary
Redox potential (Eh7) was highly and positively correlated with aerial dry weight biomass of Spartina alterniflora (r = .97).
- Taxon
- Spartina alterniflora
Sporobolus alterniflorust0 - Treatment
- Redox potentials adjusted to pH 7 (Eh 7)e0
- Outcome
- dry weight biomasse0
- Direction
- increaseinferrede0
- Value
- .97e0
- Qualifier
- aeriale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redox potentials adjusted to pH 7 (Eh 7) ranged from −184 mv to 5 mv and were highly correlated (r) with aerial and root dry weight biomass (.97 and .97, respectively) and plant height (1.0)”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Redox potential (Eh7) was highly and positively correlated with root dry weight biomass of Spartina alterniflora (r = .97).
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Treatment
- Redox potentials adjusted to pH 7 (Eh 7)e0
- Outcome
- dry weight biomasse0
- Direction
- increaseinferrede0
- Value
- .97e0
- Qualifier
- roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redox potentials adjusted to pH 7 (Eh 7) ranged from −184 mv to 5 mv and were highly correlated (r) with aerial and root dry weight biomass (.97 and .97, respectively) and plant height (1.0)”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Redox potential (Eh7) was highly and positively correlated with plant height of Spartina alterniflora (r = 1.0).
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Treatment
- Redox potentials adjusted to pH 7 (Eh 7)e0
- Outcome
- plant heighte0
- Direction
- increaseinferrede0
- Value
- 1.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Redox potentials adjusted to pH 7 (Eh 7) ranged from −184 mv to 5 mv and were highly correlated (r) with aerial and root dry weight biomass (.97 and .97, respectively) and plant height (1.0)”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Soil pH was negatively correlated with aerial and root dry weight biomass of Spartina alterniflora.
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Treatment
- soil pHe0
- Outcome
- aerial and root dry weight biomasse0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The range of soil pH at the conclusion of the study was 6.07 to 6.74 and was negatively correlated with aerial and root dry weight biomass”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Sulfide concentration was negatively correlated with aerial dry weight biomass of Spartina alterniflora (r = −.85).
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Compound
- Sulfidee0
- Outcome
- dry weightse0
- Direction
- decreaseinferrede0
- Value
- −.85e0
- Qualifier
- aeriale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfide concentrations ranged from 10–2 to 10–7 m and vorrelations with aerial and root dry weights and height were −.85, −.85 and −.87, respectively”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Sulfide concentration was negatively correlated with root dry weight biomass of Spartina alterniflora (r = −.85).
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Compound
- Sulfidee0
- Outcome
- dry weightse0
- Direction
- decreaseinferrede0
- Value
- −.85e0
- Qualifier
- roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfide concentrations ranged from 10–2 to 10–7 m and vorrelations with aerial and root dry weights and height were −.85, −.85 and −.87, respectively”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Sulfide concentration was negatively correlated with plant height of Spartina alterniflora (r = −.87).
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Compound
- Sulfidee0
- Outcome
- heighte0
- Direction
- decreaseinferrede0
- Value
- −.87e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfide concentrations ranged from 10–2 to 10–7 m and vorrelations with aerial and root dry weights and height were −.85, −.85 and −.87, respectively”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Sodium and sulfur concentrations were negatively correlated with growth of Spartina alterniflora.
- Taxon
- S. alternifloraSporobolus alternifloruse0
- Compound
- sodium and sulfure0
- Outcome
- growthe0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High negative correlations were found between sodium and sulfur concentrations and S. alterniflora growth”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Potassium, phosphorus and manganese concentrations were positively correlated with growth response of Spartina alterniflora.
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Compound
- potassium, phosphorus, manganesee0
- Outcome
- growth responsee0
- Direction
- Positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Positive correlations between potassium, phosphorus, manganese, zinc, copper, iron and growth response were also observed”
t0“Spartina alterniflora Loisel.”
Claim · model-written summary
Zinc, copper and iron concentrations were positively correlated with growth response of Spartina alterniflora.
- Taxon
- Spartina alternifloraSporobolus alterniflorust0
- Compound
- zinc, copper, irone0
- Outcome
- growth responsee0
- Direction
- Positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Positive correlations between potassium, phosphorus, manganese, zinc, copper, iron and growth response were also observed”
t0“Spartina alterniflora Loisel.”