Cost-effectiveness of leaf energy and resource investment of invasive Berberis thunbergii and co-occurring native shrubs

J N Boyd; Cheng Yuan Xu; K L Griffin

doi:10.1139/X09-128

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Cost-effectiveness of leaf energy and resource investment of invasive Berberis thunbergii and co-occurring native shrubs

Journal article

Peer reviewed

Cost-effectiveness of leaf energy and resource investment of invasive Berberis thunbergii and co-occurring native shrubs

J N Boyd, Cheng Yuan Xu and K L Griffin

Canadian Journal of Forest Research, Vol.39(11), pp.2109-2118

2009

DOI: https://doi.org/10.1139/X09-128

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Abstract

Agricultural and Veterinary Sciences

Earth Sciences

Environmental Sciences

Photosynthetic energy gain and biomass energy and resource investment represent trade-offs between potential enhancements and limitations to plant productivity, respectively. We compared these characteristics in the exotic invasive Berberis thunbergii DC. with that of co-occurring natives Kalmia latifolia L. and Vaccinium corymbosum L. in a northeastern United States forest. We hypothesized that invasion by B. thunbergii could be facilitated by a lower leaf construction cost (CC) and reduced leaf nitrogen content (N) relative to photosynthetic rate (A) and maximum photosynthetic capacity (Amax), which would afford it greater energy-use efficiency (EUE) and nitrogen-use efficiency (NUE), and maximums of these variables (EUEmax and NUEmax), compared with native shrubs. Although B. thunbergii and K. latifolia exhibited similar peak-season A and Amax, EUE, EUEmax, and NUEmax were greater in B. thunbergii, which exhibited lower leaf CC and density. In contrast, EUE, EUEmax, NUE, and NUEmax did not differ between B. thunbergii and V. corymbosum given their similar A, Amax, and area-based leaf CC and leaf N. Considered with leaf phenology, our results suggest two distinct physiological mechanisms could influence B. thunbergii invasion. Specifically, deciduous B. thunbergii exhibited greater cost-effectiveness than evergreen K. latifolia, while a longer payback time for photosynthetic energy gain could offset instantaneous similarities in cost-effectiveness of earlier leafing B. thunbergii and deciduous V. corymbosum.

Details

Title: Cost-effectiveness of leaf energy and resource investment of invasive Berberis thunbergii and co-occurring native shrubs
Authors: J N Boyd (Author) - Columbia University, United States
Cheng Yuan Xu (Author) - Columbia University, United States
K L Griffin (Author) - Columbia University, United States
Publication details: Canadian Journal of Forest Research, Vol.39(11), pp.2109-2118
Publisher: N R C Research Press
Date published: 2009
DOI: 10.1139/X09-128
ISSN: 0045-5067
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450144102621
Output Type: Journal article

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Web Of Science research areas: Forestry

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