Advanced search
1 file | 625.76 KB

How are anatomical and hydraulic features of the mangroves Avicennia marina and Rhizophora mucronata influenced by siltation?

Author
Organization
Abstract
Elevated sediment addition, or siltation, within mangrove ecosystems is considered as being negative for trees and saplings, resulting in stress and higher mortality rates. However, little is known about how siltation influences the hydraulic functioning of mangrove trees. Comparing two mangrove tree species (Avicennia marina Vierh. Forsk. and Rhizophora mucronata Lam.) from low and high-siltation plots led to the detection of anatomical and morphological differences and tendencies. Adaptations to high siltation were found to be either mutual among both species, e.g., significant smaller single leaf area (p A.marina = 0.058, F1.38 = 3.8; p R.mucronata = 0.005, F1.38 = 8.7; n = 20 × 20) and a tendency towards smaller stomatal areas (p A.marina = 0.131, F1.8 = 2.8; p R.mucronata = 0.185, F1.8 = 2.1, n = 5 × 60), or species-specific trends for A. marina, such as higher phloem band/growth layer ratios (p = 0.101, F1.8 = 3.4, n = 5 × 3) and stomatal density (p = 0.052, F1.8 = 5.2, n = 5 × 4). All adaptations seemingly contributed to a comparable hydraulic conductivity independent of the degree of siltation. These findings indicate that silted trees level off fluctuations in their hydraulic performance as a survival mechanism to cope with this less favourable environment. Most of the trees’ structural adaptations to cope with siltation are similar to known drought stress-imposed adaptations.
Keywords
Stomata, Hydraulic conductivity, Phloem band/growth layer ratio, Leaf area, Wood anatomy, LEAF GAS-EXCHANGE, VESSEL CHARACTERS, PHOTOSYNTHETIC CAPACITY, STOMATAL CONDUCTANCE, SALINITY GRADIENT, RICINUS-COMMUNIS, WATER RELATIONS, DROUGHT STRESS, ABSCISIC-ACID, GAZI BAY

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 625.76 KB

Citation

Please use this url to cite or link to this publication:

Chicago
De Deurwaerder, Hannes, Judith A Okello, Nico Koedam, Nele Schmitz, and Kathy Steppe. 2016. “How Are Anatomical and Hydraulic Features of the Mangroves Avicennia Marina and Rhizophora Mucronata Influenced by Siltation?” Trees-structure and Function 30 (1): 35–45.
APA
De Deurwaerder, H., Okello, J. A., Koedam, N., Schmitz, N., & Steppe, K. (2016). How are anatomical and hydraulic features of the mangroves Avicennia marina and Rhizophora mucronata influenced by siltation? TREES-STRUCTURE AND FUNCTION, 30(1), 35–45.
Vancouver
1.
De Deurwaerder H, Okello JA, Koedam N, Schmitz N, Steppe K. How are anatomical and hydraulic features of the mangroves Avicennia marina and Rhizophora mucronata influenced by siltation? TREES-STRUCTURE AND FUNCTION. 2016;30(1):35–45.
MLA
De Deurwaerder, Hannes, Judith A Okello, Nico Koedam, et al. “How Are Anatomical and Hydraulic Features of the Mangroves Avicennia Marina and Rhizophora Mucronata Influenced by Siltation?” TREES-STRUCTURE AND FUNCTION 30.1 (2016): 35–45. Print.
@article{7092341,
  abstract     = {Elevated sediment addition, or siltation, within mangrove ecosystems is considered as being negative for trees and saplings, resulting in stress and higher mortality rates. However, little is known about how siltation influences the hydraulic functioning of mangrove trees. Comparing two mangrove tree species (Avicennia marina Vierh. Forsk. and Rhizophora mucronata Lam.) from low and high-siltation plots led to the detection of anatomical and morphological differences and tendencies. Adaptations to high siltation were found to be either mutual among both species, e.g., significant smaller single leaf area (p A.marina  = 0.058, F1.38 = 3.8; p R.mucronata  = 0.005, F1.38 = 8.7; n = 20 {\texttimes} 20) and a tendency towards smaller stomatal areas (p A.marina  = 0.131, F1.8 = 2.8; p R.mucronata  = 0.185, F1.8 = 2.1, n = 5 {\texttimes} 60), or species-specific trends for A. marina, such as higher phloem band/growth layer ratios (p = 0.101, F1.8 = 3.4, n = 5 {\texttimes} 3) and stomatal density (p = 0.052, F1.8 = 5.2, n = 5 {\texttimes} 4). All adaptations seemingly contributed to a comparable hydraulic conductivity independent of the degree of siltation. These findings indicate that silted trees level off fluctuations in their hydraulic performance as a survival mechanism to cope with this less favourable environment. Most of the trees{\textquoteright} structural adaptations to cope with siltation are similar to known drought stress-imposed adaptations.},
  author       = {De Deurwaerder, Hannes and Okello,  Judith A and Koedam, Nico and Schmitz, Nele and Steppe, Kathy},
  issn         = {0931-1890},
  journal      = {TREES-STRUCTURE AND FUNCTION},
  keyword      = {Stomata,Hydraulic conductivity,Phloem band/growth layer ratio,Leaf area,Wood anatomy,LEAF GAS-EXCHANGE,VESSEL CHARACTERS,PHOTOSYNTHETIC CAPACITY,STOMATAL CONDUCTANCE,SALINITY GRADIENT,RICINUS-COMMUNIS,WATER RELATIONS,DROUGHT STRESS,ABSCISIC-ACID,GAZI BAY},
  language     = {eng},
  number       = {1},
  pages        = {35--45},
  title        = {How are anatomical and hydraulic features of the mangroves Avicennia marina and Rhizophora mucronata influenced by siltation?},
  url          = {http://dx.doi.org/10.1007/s00468-016-1357-x},
  volume       = {30},
  year         = {2016},
}

Altmetric
View in Altmetric
Web of Science
Times cited: