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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Seasonal changes in water sources used by woody species in a tropical coastal dune forest

Participants in the publication
C. Antunes (Author)
C. Silva (Author)
C. Máguas (Author)
Dep. Biologia Vegetal
CE3C - Centro de Ecologia, Evolução e Alterações Ambientais
C. A. Joly (Author)
S. Vieira (Author)

Refereeing
Yes

Summary
_Aims_ Our aim was to investigate the water sources used by woody species under contrasting water availability and the extent of water-sources-use differentiation among dominant woody species in a tropical coastal dune forest. _Methods_ We sampled 15 woody species in a Brazilian restinga forest and, through Bayesian isotope mixing models, we estimated the proportion of water sources used. We tested whether water-sources-use was (i) different between contrasting water availability conditions; (ii) dependent on growth form, plant size or crown illumination; and (iii) influenced by stand density, evenness or biomass. _Results_ We found a seasonal variation in water-sources-use, but no vertical soil-water partitioning among woody species. In wetter periods, plants used mainly water from top-soil, as a shallow water table limited water uptake to top-soil layers recharged with rainwater. Contrastingly, during drier periods, with the absence of rain and a deeper water table, plants generally relied on deeper (50 cm) soil layers. Only under less-wet conditions, a greater evenness and density implied higher water-uptake depth heterogeneity among plants. However, changes in the main water-sources used by plants were neither evoked in more dense or diverse plots, nor induced by plant size. _Conclusions_ Our study shows that restinga species have dynamic shifts in water-uptake depth caused by seasonal water availability changes, influenced by the combined effect of insufficient moisture at shallow soil layers and water-table lowering in drier periods. These temporal shifts are common among species, implying that restinga woody community has a homogeneous strategy of water-resources acquisition. This study enhances our understanding of the effects that water variations can have on water-resource use in restinga forests.

Date of Submisson/Request
2018-08-28
Date of Acceptance
2019-01-11
Date of Publication
2019-02-02

Where published
Plant and Soil

Publication Identifiers
ISSN - 0032-079X
eISSN - 1573-5036

Publisher
Springer Science and Business Media LLC

Volume
437
Number
1-2

Number of pages
13
Starting page
41
Last page
54

Document Identifiers
DOI - https://doi.org/10.1007/s11104-019-03947-9
URL - http://dx.doi.org/10.1007/s11104-019-03947-9

Rankings
SCIMAGO Q1 (2018) - 1.187 - Plant Sciences

Keywords
Groundwater availability Stable isotope mixing model Restinga forest Coastal dune ecosystem Water-sources-use Soil-water partitioning


Export

APA
C. Antunes, C. Silva, C. Máguas, C. A. Joly, S. Vieira, (2019). Seasonal changes in water sources used by woody species in a tropical coastal dune forest. Plant and Soil, 437, 41-54. ISSN 0032-079X. eISSN 1573-5036. http://dx.doi.org/10.1007/s11104-019-03947-9

IEEE
C. Antunes, C. Silva, C. Máguas, C. A. Joly, S. Vieira, "Seasonal changes in water sources used by woody species in a tropical coastal dune forest" in Plant and Soil, vol. 437, pp. 41-54, 2019. 10.1007/s11104-019-03947-9

BIBTEX
@article{40220, author = {C. Antunes and C. Silva and C. Máguas and C. A. Joly and S. Vieira}, title = {Seasonal changes in water sources used by woody species in a tropical coastal dune forest}, journal = {Plant and Soil}, year = 2019, pages = {41-54}, volume = 437 }