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Russian Journal of Plant Physiology

, Volume 66, Issue 3, pp 393–402 | Cite as

Leaf Functional Traits and Biomass of Wetland Plants in Forest and Steppe Zones

  • D. A. RonzhinaEmail author
  • L. A. Ivanova
  • L. A. Ivanov
RESEARCH PAPERS
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Abstract

Leaf traits, the rate of gas exchange, and biomass were examined in five plurizonal species (Alisma plantago-aquatica L., Carex acuta L., Eleocharis palustris (L.) Roem. et Schult., Phalaris arundinacea L., and Typha angustifolia L.) of emergent plants growing in wetlands of forest (Middle Urals) and steppe (South Urals) zones. It was found that changes in the leaf thickness, leaf mass per area (LMA), the transpiration rate, and characteristics of the pigment complex associated with a rise in aridity were species-specific. Structural reorganization of the leaves of wetland plants growing in conditions of steppe wetland showed a general pattern of an increase in leaf density (1.2–2 times) and a reduction in leaf area (by 42–54%). This trend was accompanied by a reduction in the photosynthesis rate per 1 m2 (1.2–3.4 times) or per 1 mg of chlorophyll (by 29–63%). In two species, P. arundinacea and T. angustifolia, we detected a decrease in stomatal conductance by 2 and 4.8 times, respectively, in more arid conditions. Analysis of interspecific relations between plant productivity and leaf parameters has shown that plant biomass positively correlated with leaf area (r = 0.84, P < 0.01) and with the photosynthesis rate per leaf area unit (r = 0.97, P < 0.001) both in the regions of the Middle and South Urals. On the whole, structural changes in the leaves associated with adaptation of plant water relations to semiarid climate lead to a decrease in photosynthetic activity of leaves and, therefore, a decline of plant height and productivity of emergent plants growing in steppe wetland.

Keywords:

wetland plants above-ground biomass leaf traits LMA chlorophyll carotenoids photosynthesis transpiration water use efficiency aridity 

Notes

ACKNOWLEDGMENTS

We are grateful to the personnel of Orenburgskii Wildlife Preservation for their assistance in our investigations.

FUNDING

This work was supported by the Russian Federal Budget (project no. АААА-А17-117072810011-1).

COMPLIANCE WITH ETHICAL STANDARDS

The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • D. A. Ronzhina
    • 1
    • 2
    Email author
  • L. A. Ivanova
    • 1
    • 2
  • L. A. Ivanov
    • 1
    • 2
  1. 1.Botanical Garden, Ural Branch, Russian Academy of SciencesEkaterinburgRussia
  2. 2.Tyumen State UniversityTyumenRussia

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