CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Australian Journal of Botany   
Australian Journal of Botany
Journal Banner
  Southern Hemisphere Botanical Ecosystems
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Board
Contacts
Content
Current Issue
Just Accepted
All Issues
Special Issues
Turner Review Series
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

red arrow PrometheusWiki
blank image
PrometheusWiki
Protocols in ecological and environmental plant physiology

 

Article << Previous     |     Next >>   Contents Vol 48(2)

Stomatal parameters and atmospheric change since 7500 years before present: evidence from Eremophila deserti (Myoporaceae) leaves from the Flinders Ranges region, South Australia

J. M. Atchison, L. M. Head and L. P. McCarthy

Australian Journal of Botany 48(2) 223 - 232
Published: 2000

Abstract

Stomatal parameters (stomatal density, stomatal index and stomatal conductance) have been widely used to study vegetation response to long-term CO2 change, mostly in the Northern Hemisphere. We tested the applicability of the methods and interpretations to Australian desert vegetation, by using Eremophila deserti A.Cunn. (Myoporaceae) leaves. Subfossil samples dated at 7500 years before present and 3700 years before present from Leporillus species (stick-nest rat) middens from the Flinders Ranges were compared with herbarium and modern samples from the area. Stomatal density and stomatal conductance are problematic in their application to this species, probably because of the effect of the moisture regime on epidermal cell size. Stomatal index, which takes some account of independent variations in cell size, did allow the differentiation of long-term trends. In contrast to most other studies, these trends show an increase in stomatal index with increasing CO2, particularly over the last century. From 7500 years before present until about 1950, it is unclear whether CO2 was the most influential among a complex set of factors including different aspects of the moisture regime. In recent decades, the influence of CO2, as demonstrated statistically, accounts for most but not all the observed variation.



Full text doi:10.1071/BT98049

© CSIRO 2000

blank image
Subscriber Login
Username:
Password:  

 
PDF (1.6 MB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2014