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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Mapping the suitability of groundwater-dependent vegetation in a semi-arid Mediterranean area

Participants in the publication
Inês Gomes Marques (Author)
João Nascimento (Author)
Rita M. Cardoso (Author)
IDL - Instituto Dom Luiz
Filipe Miguéns (Author)
Maria Teresa Condesso de Melo (Author)
Pedro M. M. Soares (Author)
Dep. Engenharia Geográfica, Geofísica e Energia
IDL - Instituto Dom Luiz
Célia M. Gouveia (Author)
IDL - Instituto Dom Luiz
Cathy Kurz Besson (Author)
IDL - Instituto Dom Luiz

Summary
Mapping the suitability of groundwater-dependent vegetation in semi-arid Mediterranean areas is fundamental for the sustainable management of groundwater resources and groundwater-dependent ecosystems (GDEs) under the risks of climate change scenarios. For the present study the distribution of deep-rooted woody species in southern Portugal was modeled using climatic, hydrological and topographic environmental variables. To do so, Quercus suber, Quercus ilex and Pinus pinea were used as proxy species to represent the groundwater-dependent vegetation (GDV). Model fitting was performed between the proxy species Kernel density and the selected environmental predictors using (1) a simple linear model and (2) a geographically weighted regression (GWR) to account for autocorrelation of the spatial data and residuals. When comparing the results of both models, the GWR modeling results showed improved goodness of fit as opposed to the simple linear model. Climatic indices were the main drivers of GDV density, followed by a much lower influence by groundwater depth, drainage density and slope. Groundwater depth did not appear to be as pertinent in the model as initially expected, accounting only for about 7 % of the total variation compared to 88 % for climate drivers.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\nThe relative proportion of model predictor coefficients was used as weighting factors for multicriteria analysis to create a suitability map for the GDV in southern Portugal showing where the vegetation most likely relies on groundwater to cope with aridity. A validation of the resulting map was performed using independent data of the normalized difference water index (NDWI), a satellite-derived vegetation index. June, July and August of 2005 NDWI anomalies, for the years 1999–2009, were calculated to assess the response of active woody species in the region after an extreme drought. The results from the NDWI anomalies provided an overall good agreement with the suitability to host GDV. The model was considered to be reliable for predicting the distribution of the studied vegetation.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\nThe methodology developed to map GDVs will allow for the prediction of the evolution of the distribution of GDV according to climate change and aid stakeholder decision-making concerning priority areas of water resource management.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n

Date of Publication
2019-09-03

Where published
Hydrology and Earth System Sciences

Publication Identifiers
ISSN - 1607-7938

Publisher
Copernicus GmbH

Volume
23
Number
9

Number of pages
27
Starting page
3525
Last page
3552

Document Identifiers
DOI - https://doi.org/10.5194/hess-23-3525-2019
URL - http://dx.doi.org/10.5194/hess-23-3525-2019

Rankings
SCIMAGO Q1 (2018) - 2.134 - Earth and Planetary Sciences


Export

APA
Inês Gomes Marques, João Nascimento, Rita M. Cardoso, Filipe Miguéns, Maria Teresa Condesso de Melo, Pedro M. M. Soares, Célia M. Gouveia, Cathy Kurz Besson, (2019). Mapping the suitability of groundwater-dependent vegetation in a semi-arid Mediterranean area. Hydrology and Earth System Sciences, 23, 3525-3552. ISSN 1607-7938. eISSN . http://dx.doi.org/10.5194/hess-23-3525-2019

IEEE
Inês Gomes Marques, João Nascimento, Rita M. Cardoso, Filipe Miguéns, Maria Teresa Condesso de Melo, Pedro M. M. Soares, Célia M. Gouveia, Cathy Kurz Besson, "Mapping the suitability of groundwater-dependent vegetation in a semi-arid Mediterranean area" in Hydrology and Earth System Sciences, vol. 23, pp. 3525-3552, 2019. 10.5194/hess-23-3525-2019

BIBTEX
@article{45735, author = {Inês Gomes Marques and João Nascimento and Rita M. Cardoso and Filipe Miguéns and Maria Teresa Condesso de Melo and Pedro M. M. Soares and Célia M. Gouveia and Cathy Kurz Besson}, title = {Mapping the suitability of groundwater-dependent vegetation in a semi-arid Mediterranean area}, journal = {Hydrology and Earth System Sciences}, year = 2019, pages = {3525-3552}, volume = 23 }