Skip to main content
Log in

Ecophysiological investigations on wild and cultivated plants in the Negev Desert

I. Methods: A mobile laboratory for measuring carbon dioxide and water vapour exchange

  • Published:
Oecologia Aims and scope Submit manuscript

Summary

Carbon dioxide exchange and transpiration measurements of various wild and cultivated plants were carried out during the dry summer period in 1967 in the Central Negev Desert (Israel). A mobile laboratory used for these investigations is described. Measurements were carried out with conditioned plant chambers which followed either the ambient temperature and humidity or else allowed the experiments to be carried out under constant conditions. The accuracy of the measurements was estimated. The mean error of the determination of the CO2 exchange rate amounts to ±0.07 mg CO2·g-1·h-1. Transpiration rate is measured with an error of ±0.15 g H2O·g-1·h-1. The response time of the instrumentation to reach 90% equilibrium after a change in photosynthesis or transpiration is 7 to 9 minutes. Errors which are caused by changes of quality of incident radiant energy and altered turbulence conditions for the leaves enclosed in the chamber, are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Evenari, M., Shanan, L., Tadmor, N. H.: The Negev—The challenge of a desert. Cambridge, Mass.: Harvard University Press 1971.

    Google Scholar 

  • Hager, H., Meyer-Bertenrath, T.: Die Isolierung und quantitative Bestimmung der Carotinoide und Chlorophylle von Blättern, Algen und isolierten Chloroplasten mit Hilfe dünnschichtchromatographischer Methoden. Planta (Berl.) 69, 198–217 (1966).

    Google Scholar 

  • Janáč, J.: The accuracy of the differential measurement of small CO2 concentration differences with the infrared gas analyzer. Photosynthetica 4, 302–308 (1970).

    Google Scholar 

  • Kleschnin, A. F.: Die Pflanze und das Licht. Berlin: Akademie-Verlag 1960.

    Google Scholar 

  • Koch, W.: Der Tagesgang der Produktivität der Transpiration. Planta (Berl.) 48, 418–452 (1957).

    Google Scholar 

  • — Klein, E., Walz, H.: Neuartige Gaswechsel-Meßanlage für Pflanzen in Laboratorium und Freiland. Siemens-Z. 42, 392–404 (1968).

    Google Scholar 

  • Lange, O. L.: Untersuchungen über Wärmehaushalt und Hitzeresistenz mauretanischer Wüsten- und Savannenpflanzen. Flora 147, 595–651 (1959).

    Google Scholar 

  • — Koch, W., Schulze, E.-D.: CO2-Gaswechsel und Wasserhaushalt von Pflanzen in der Negev-Wüste am Ende der Trockenzeit. Ber. dtsch. bot. Ges. 82, 39–61 (1969).

    Google Scholar 

  • — Schulze, E.-D., Koch, W.: Experimentell-ökologische Untersuchungen an Flechten der Negev-Wüste. II. CO2-Gaswechsel und Wasserhaushalt von Ramalina maciformis (Del.) Bory am natürlichen Standort während der sommerlichen Trockenperiode. Flora 159, 38–62 (1970a).

    Google Scholar 

  • —: Experimentell-ökologische Untersuchungen an Flechten der Negev-Wüste. III. CO2-Gaswechsel und Wasserhaushalt von Krusten- und Blattflechten am natürlichen Standort während der sommerlichen Trockenperiode. Flora 159, 525–528 (1970b).

    Google Scholar 

  • MacKinney, G.: Absorption of light by chlorophyll solutions. J. biol. Chem. 140, 315–322 (1941).

    Google Scholar 

  • Nuernbergk, E. L.: Kunstlicht und Pflanzenkultur. München-Bonn-Wien: BLV Verlagsges. 1961

    Google Scholar 

  • Schulze, E.-D.: Der CO2-Gaswechsel der Buche (Fagus silvatica L.) in Abhängigkeit von den Klimafaktoren im Freiland. Flora 159, 177–232 (1970).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Koch, W., Lange, O.L. & Schulze, E.D. Ecophysiological investigations on wild and cultivated plants in the Negev Desert. Oecologia 8, 296–309 (1971). https://doi.org/10.1007/BF00346476

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00346476

Keywords

Navigation