A multi-scale approach to assess the effect of groundwater extraction on Prosopis tamarugo in the Atacama Desert.
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| Title: | A multi-scale approach to assess the effect of groundwater extraction on Prosopis tamarugo in the Atacama Desert. |
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| Authors: | Decuyper, Mathieu1,2 mathieu.decuyper@wur.nl, Chávez, Roberto O.3 roberto.chavez.o@gmail.com, Copini, Paul1,4 paul.copini@wur.nl, Sass-Klaassen, Ute1 ute.sassklaassen@wur.nl |
| Source: | Journal of Arid Environments. Aug2016, Vol. 131, p25-34. 10p. |
| Subjects: | Groundwater ecology, Ecosystems, Arid regions, Bioavailability, Tamarugo |
| Geographic Terms: | Atacama Desert (Chile) |
| Abstract: | Groundwater-dependent ecosystems occur in arid and semi-arid areas worldwide and are sensitive to changes in groundwater availability. Prosopis tamarugo Phil, endemic to the Atacama Desert, is threatened by groundwater overexploitation due to mining and urban consumption. The effect of groundwater depletion on two representative sites (low -and high-depletion) was studied using a multi-scale approach, combining remote sensing based estimations of canopy growth and water condition, and tree-ring based analysis of stem growth. On the stand level two NDVI (Normalized Difference Vegetation Index) -derived parameters: NDVI in winter and the difference between NDVI in summer and winter showed significant negative trends in the high-depletion site, indicating drought stress. Radial stem growth of viable P. tamarugo trees was 48% lower in the high-depletion site. At the tree level, the Green Canopy Fraction (GCF) also indicated drought stress since a larger percentage of trees fell within lower GCF classes. Groundwater depletion of 3 m, reaching a groundwater depth of >10 m, increased drought stress, and led to reduced growth in viable trees. Viable trees may be able to adapt to the drop in groundwater levels by increasing root growth, whereas for non-viable trees, the effects might be detrimental. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Arid Environments is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 115598698 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A multi-scale approach to assess the effect of groundwater extraction on Prosopis tamarugo in the Atacama Desert. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Decuyper%2C+Mathieu%22">Decuyper, Mathieu</searchLink><relatesTo>1,2</relatesTo><i> mathieu.decuyper@wur.nl</i><br /><searchLink fieldCode="AR" term="%22Chávez%2C+Roberto+O%2E%22">Chávez, Roberto O.</searchLink><relatesTo>3</relatesTo><i> roberto.chavez.o@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Copini%2C+Paul%22">Copini, Paul</searchLink><relatesTo>1,4</relatesTo><i> paul.copini@wur.nl</i><br /><searchLink fieldCode="AR" term="%22Sass-Klaassen%2C+Ute%22">Sass-Klaassen, Ute</searchLink><relatesTo>1</relatesTo><i> ute.sassklaassen@wur.nl</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Arid+Environments%22">Journal of Arid Environments</searchLink>. Aug2016, Vol. 131, p25-34. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Groundwater+ecology%22">Groundwater ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Ecosystems%22">Ecosystems</searchLink><br /><searchLink fieldCode="DE" term="%22Arid+regions%22">Arid regions</searchLink><br /><searchLink fieldCode="DE" term="%22Bioavailability%22">Bioavailability</searchLink><br /><searchLink fieldCode="DE" term="%22Tamarugo%22">Tamarugo</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Atacama+Desert+%28Chile%29%22">Atacama Desert (Chile)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Groundwater-dependent ecosystems occur in arid and semi-arid areas worldwide and are sensitive to changes in groundwater availability. Prosopis tamarugo Phil, endemic to the Atacama Desert, is threatened by groundwater overexploitation due to mining and urban consumption. The effect of groundwater depletion on two representative sites (low -and high-depletion) was studied using a multi-scale approach, combining remote sensing based estimations of canopy growth and water condition, and tree-ring based analysis of stem growth. On the stand level two NDVI (Normalized Difference Vegetation Index) -derived parameters: NDVI in winter and the difference between NDVI in summer and winter showed significant negative trends in the high-depletion site, indicating drought stress. Radial stem growth of viable P. tamarugo trees was 48% lower in the high-depletion site. At the tree level, the Green Canopy Fraction (GCF) also indicated drought stress since a larger percentage of trees fell within lower GCF classes. Groundwater depletion of 3 m, reaching a groundwater depth of >10 m, increased drought stress, and led to reduced growth in viable trees. Viable trees may be able to adapt to the drop in groundwater levels by increasing root growth, whereas for non-viable trees, the effects might be detrimental. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Arid Environments is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jaridenv.2016.03.014 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 25 Subjects: – SubjectFull: Groundwater ecology Type: general – SubjectFull: Ecosystems Type: general – SubjectFull: Arid regions Type: general – SubjectFull: Bioavailability Type: general – SubjectFull: Tamarugo Type: general – SubjectFull: Atacama Desert (Chile) Type: general Titles: – TitleFull: A multi-scale approach to assess the effect of groundwater extraction on Prosopis tamarugo in the Atacama Desert. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Decuyper, Mathieu – PersonEntity: Name: NameFull: Chávez, Roberto O. – PersonEntity: Name: NameFull: Copini, Paul – PersonEntity: Name: NameFull: Sass-Klaassen, Ute IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 01401963 Numbering: – Type: volume Value: 131 Titles: – TitleFull: Journal of Arid Environments Type: main |
| ResultId | 1 |
