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Mutualism-disrupting allelopathic invader drives carbon stress and vital rate decline in a forest perennial herb.

Brouwer NL, Hale AN, Kalisz S - AoB Plants (2015)

Bottom Line: Over a single growing season, the loss of RFS could reduce a plant's photosynthetic physiology and carbon storage.Alliaria-treated plants exhibit significant overall reductions in total non-structural carbohydrates and have 17 % less storage carbohydrates relative to controls.Together, our results are consistent with the hypothesis that disruption of a ubiquitous mutualism following species invasion creates symptoms of carbon stress for species dependent on RFS.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA brouwern@gmail.com.

No MeSH data available.


Related in: MedlinePlus

Effect of Alliaria on plant size of Maianthemum marked in the initial 2003 survey of the field experiment. (A) Mean difference (effect size) in plant size between Alliaria in ambient and removal treatments. (B) Annual mean plant sizes in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant difference in plant size between the two treatments (P < 0.05). Size data were not available for 2008 and 2009.
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PLV014F2: Effect of Alliaria on plant size of Maianthemum marked in the initial 2003 survey of the field experiment. (A) Mean difference (effect size) in plant size between Alliaria in ambient and removal treatments. (B) Annual mean plant sizes in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant difference in plant size between the two treatments (P < 0.05). Size data were not available for 2008 and 2009.

Mentions: Prior to implementation of the removal treatment, there was no difference in the mean size of plants in the initial 2003 cohort (Fig. 2; P = 0.55). By 2013 plants in the removal treatment are significantly larger than those in the ambient Alliaria treatment (mean difference = 6.70 cm, SE = 2.96; P = 0.02). There is a significant positive linear trend in size from 2006 to 2013 (trend contrast P = 0.0056) in the Alliaria removal plots but no trend in the ambient plots (P = 0.91).Figure 2.


Mutualism-disrupting allelopathic invader drives carbon stress and vital rate decline in a forest perennial herb.

Brouwer NL, Hale AN, Kalisz S - AoB Plants (2015)

Effect of Alliaria on plant size of Maianthemum marked in the initial 2003 survey of the field experiment. (A) Mean difference (effect size) in plant size between Alliaria in ambient and removal treatments. (B) Annual mean plant sizes in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant difference in plant size between the two treatments (P < 0.05). Size data were not available for 2008 and 2009.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4374104&req=5

PLV014F2: Effect of Alliaria on plant size of Maianthemum marked in the initial 2003 survey of the field experiment. (A) Mean difference (effect size) in plant size between Alliaria in ambient and removal treatments. (B) Annual mean plant sizes in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant difference in plant size between the two treatments (P < 0.05). Size data were not available for 2008 and 2009.
Mentions: Prior to implementation of the removal treatment, there was no difference in the mean size of plants in the initial 2003 cohort (Fig. 2; P = 0.55). By 2013 plants in the removal treatment are significantly larger than those in the ambient Alliaria treatment (mean difference = 6.70 cm, SE = 2.96; P = 0.02). There is a significant positive linear trend in size from 2006 to 2013 (trend contrast P = 0.0056) in the Alliaria removal plots but no trend in the ambient plots (P = 0.91).Figure 2.

Bottom Line: Over a single growing season, the loss of RFS could reduce a plant's photosynthetic physiology and carbon storage.Alliaria-treated plants exhibit significant overall reductions in total non-structural carbohydrates and have 17 % less storage carbohydrates relative to controls.Together, our results are consistent with the hypothesis that disruption of a ubiquitous mutualism following species invasion creates symptoms of carbon stress for species dependent on RFS.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA brouwern@gmail.com.

No MeSH data available.


Related in: MedlinePlus