Incorporating clonal growth form clarifies the role of plant height in response to nitrogen addition

Incorporating clonal growth form clarifies the role of plant height in response to nitrogen addition. Gough, L., Gross, K. L., Cleland, E. E, Clark, C. M., Collins, S. L., Fargione, J. E., Pennings, S. C., & Suding, K. N. 2012.
abstract bibtex

Nutrient addition to grasslands consistentlycauses species richness declines and productivity increases.Competition, particularly for light, is often assumed to producethis result. Using a long-term dataset from North Americanherbaceous plant communities, we tested whether heightand clonal growth form together predict responses to fertilizationbecause neither trait alone predicted species loss in aprevious analysis. Species with a tall-runner growth formcommonly increased in relative abundance in response toadded nitrogen, while short species and those with a tallclumpedclonal growth form often decreased. The ability toincrease in size via vegetative spread across space, whilesimultaneously occupying the canopy, conferred competitiveadvantage, although typically only the abundance of a singlespecies within each height-clonal growth form significantlyresponded to fertilization in each experiment. Classifyingspecies on the basis of two traits (height and clonal growthform) increases our ability to predict species responses tofertilization compared to either trait alone in predominantlyherbaceous plant communities.

@article{gough_incorporating_2012,
title = {Incorporating clonal growth form clarifies the role of plant height in response to nitrogen addition},
volume = {169},
abstract = {Nutrient addition to grasslands consistentlycauses species richness declines and productivity increases.Competition, particularly for light, is often assumed to producethis result. Using a long-term dataset from North Americanherbaceous plant communities, we tested whether heightand clonal growth form together predict responses to fertilizationbecause neither trait alone predicted species loss in aprevious analysis. Species with a tall-runner growth formcommonly increased in relative abundance in response toadded nitrogen, while short species and those with a tallclumpedclonal growth form often decreased. The ability toincrease in size via vegetative spread across space, whilesimultaneously occupying the canopy, conferred competitiveadvantage, although typically only the abundance of a singlespecies within each height-clonal growth form significantlyresponded to fertilization in each experiment. Classifyingspecies on the basis of two traits (height and clonal growthform) increases our ability to predict species responses tofertilization compared to either trait alone in predominantlyherbaceous plant communities.},
author = {Gough, Laura and Gross, Katherine L. and Cleland, Elsa E and Clark, Christopher M. and Collins, Scott L. and Fargione, Joseph E. and Pennings, Steven C. and Suding, Katherine N.},
year = {2012},
keywords = {KNZ, GCE, ARC, productivity, grassland, competition, clonal growth, nitrogen addition}
}

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