Abstract
For dioecious plant species, sex ratios within a population depend on multiple environmental and life history characteristics. Sex ratio is an indicator of population health and can be a predictor for genetic bottlenecking. My study established the previously unknown sex ratio for the shrub, Morella cerifera, on a Virginia barrier island. The ratio was compared with multiple environmental and reproductive traits to determine their potential influence on sex determination and/or distribution of male and female plants. Multivariate analyses were used to identify relationships between sex, sex ratio and environmental drivers. The sex ratio for M. cerifera changed depending on scale. The entire island ratio did not vary significantly from 50:50, based on a Chi-squared analysis. Different spatial scales resulted in different and more variable sex ratios. The environmental variables measured did not suggest any relationships with sex or sex ratio. Future studies with a focus at multiple spatial scales may elucidate the connection between environment and sex ratios for M. cerifera.
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Claims 3
Claim · model-written summary
The island-wide sex ratio of Morella cerifera did not differ significantly from 50:50.
- Taxon
- Morella cerifera
Morella ceriferat0 - Outcome
- entire island ratioe0
- Direction
- did not varye0
- Comparator
- 50:50e0
- Setting
- Virginia barrier islandt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The entire island ratio did not vary significantly from 50:50, based on a Chi-squared analysis.”
t0“Morella cerifera L. on a Virginia barrier island”
Claim · model-written summary
Sex ratios were more variable at different spatial scales.
- Taxon
- Morella ceriferaMorella ceriferat0
- Outcome
- sex ratiose0
- Direction
- more variablee0
- Qualifier
- Different spatial scalese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different spatial scales resulted in different and more variable sex ratios.”
t0“Morella cerifera L.”
Claim · model-written summary
Measured environmental variables did not suggest a relationship with sex or sex ratio.
- Taxon
- Morella ceriferaMorella ceriferat0
- Outcome
- sex or sex ratioe0
- Qualifier
- environmental variables measurede0
- Setting
- Virginia barrier islandt0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The environmental variables measured did not suggest any relationships with sex or sex ratio.”
t0“Morella cerifera L. on a Virginia barrier island”