Next Article in Journal
Guide snoRNAs: Drivers or Passengers in Human Disease?
Previous Article in Journal
Meta-Omics Tools in the World of Insect-Microorganism Interactions
Article Menu

Export Article

Open AccessArticle
Biology 2018, 7(4), 51; https://doi.org/10.3390/biology7040051

Does Plant Size Influence Leaf Elements in an Arborescent Cycad?

1
College of Natural and Applied Sciences, University of Guam, Mangilao, Guam 96923, USA
2
Cooperative Research and Extension, College of Micronesia-FSM, Yap Campus, Yap 96943, Micronesia
*
Author to whom correspondence should be addressed.
Received: 22 October 2018 / Revised: 6 December 2018 / Accepted: 11 December 2018 / Published: 13 December 2018
Full-Text   |   PDF [1032 KB, uploaded 17 December 2018]   |  

Abstract

Plant size influences the leaf nutrient relations of many species, but no cycad species has been studied in this regard. We used the arborescent Cycas micronesica K.D. Hill to quantify leaf nutrient concentrations of trees with stems up to 5.5-m in height to determine if height influenced leaf nutrients. Green leaves were sampled in a karst, alkaline habitat in Rota and a schist, acid habitat in Yap. Additionally, senesced leaves were collected from the trees in Yap. Minerals and metals were quantified in the leaf samples and regressed onto stem height. Green leaf nitrogen, calcium, manganese, and iron decreased linearly with increased stem height. Senesced leaf carbon, iron, and copper decreased and senesced leaf nitrogen increased with stem height. Nitrogen resorption efficiency decreased with stem height. Phosphorus and potassium resorption efficiencies were not influenced by plant size, but were greater than expected based on available published information. The results indicate leaf nutrient concentrations of this cycad species are directly influenced by plant size, and illuminate the need for adding more cycad species to this research agenda. Plant size should be measured and reported in all cycad reports that include measurements of leaf behavior. View Full-Text
Keywords: allometry; Cycas micronesica; growth rate hypothesis; resorption efficiency; resorption proficiency allometry; Cycas micronesica; growth rate hypothesis; resorption efficiency; resorption proficiency
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Marler, T.E.; Krishnapillai, M.V. Does Plant Size Influence Leaf Elements in an Arborescent Cycad? Biology 2018, 7, 51.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Biology EISSN 2079-7737 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top