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Show simple item record Rebelo, AJ Le Maitre, David C Esler, KJ Cowling, RM 2016-05-16T10:22:20Z 2016-05-16T10:22:20Z 2015-11
dc.identifier.citation Rebelo AJ, Le Maitre DC, Esler KJ and Cowling RM. 2015. Hydrological responses of a valley-bottom wetland to land-use/land-cover change in a South African catchment: making a case for wetland restoration. Restoration Ecology, 23(6), pp 829-841 en_US
dc.identifier.issn 1061-2971
dc.description Copyright: 2015 Society for Ecological Restoration. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website en_US
dc.description.abstract Valley-bottom wetlands are valuable assets as they provide many ecosystem services to mankind. Despite their value, valley-bottom wetlands are often exploited and land-use/land-cover (LULC) change results in trade-offs in ecosystem services. We coupled physically based hydrological modeling and spatial analysis to examine the effects of LULC change on water-related ecosystem services in the Kromme catchment: an important water-providing catchment for the city of Port Elizabeth. LULC scenarios were constructed to match 5 different decades in the last 50 years to explore the potential effects of restoring the catchment to different historic benchmarks. In the Kromme catchment, valley-bottom wetlands have declined by 84%, driven by key LULC changes: an increase in irrigated land (307 ha) and invasion by alien trees (336 ha). If the wetlands were restoed to the relatively pristine extent and condition of the 1950s, riverflow could increase by approximately 1.13 million m3/a, about 6% of the current supply to Port Elizabeth. Wetland restoration would also significantly improve the catchment's ability to absorb extreme rainfall events, decreasing flood damage. We conclude that in the face of the water scarcity in this region, all ecosystem services, particularly those related to water flow regulation, should be taken into account by decision makers in charge of land zonation. Zonation decisions should not continue to be made on the basis of provisioning ecosystem services alone (i.e. food provision or dam yield). We recommend prioritization of the preservation and restoration of valley-bottom wetlands providing water-related ecosystem services to settlements downstream. en_US
dc.language.iso en en_US
dc.publisher Society for Ecological Restoration en_US
dc.relation.ispartofseries Workflow;15858
dc.subject Baseflow en_US
dc.subject Ecological infrastructure en_US
dc.subject Ecosystem services en_US
dc.subject Flood attenuation en_US
dc.subject Invasive species en_US
dc.subject Valley-bottom wetland en_US
dc.title Hydrological responses of a valley-bottom wetland to land-use/land-cover change in a South African catchment: making a case for wetland restoration en_US
dc.type Article en_US

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