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- Ferreira, C. S. S. (author)
Impact of Land-Use Changes on Spatiotemporal Suspended Sediment Dynamics within a Peri-Urban Catchment
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- 2020-03-01
- MDPI AG,2020
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:su-181770
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-181770URI
- https://doi.org/10.3390/w12030665DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288300URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20210112
- Understanding sediment dynamics in peri-urban catchments constitutes a research challenge because of the spatiotemporal complexity and variability of land-uses involved. This study investigates differences in the concentration of total sediments (TSC) and suspended sediments (SSC) in the small peri-urban Mediterranean Ribeira dos Covoes catchment (40% urban area) in central Portugal. Suspended sediment responses at the catchment outlet (E) and in three upstream sub-catchments, during periods of urbanization (2011-2013) and stabilizing land-use (2017-2018) are compared for storm-event datasets encompassing similar ranges of rainstorm sizes and antecedent rainfall condition. The Quinta sub-catchment, with the lowest urban area (22%) but subject to major construction activities affecting 17% of its area, led to highest TSC and SSC during urbanization (attaining 4320 mg/L and 4184 mg/L, respectively), and a median reduction of 38% and 69%, respectively, during stabilization. Espirito Santo sub-catchment, with highest urban area (49%) and minor construction activities, displayed similar median TSC in both periods (258-240 mg/L) but highest SSC reduction (76%), highlighting the impact of the anthropogenic disturbance mainly on fine-particle sediments and a good connectivity with the stream. Porto Bordalo sub-catchment, with 39% urban area and subject to the construction of a four-line road covering 1.5% of its area, showed the lowest TSC and SSC concentrations and the lowest median reductions in both periods (31% and 64%, correspondingly), mainly because of the impact of an unplanned retention basin established with soil from the construction site. Overall, median TSC and SSC reduced 14% and 59% at E, from urbanization to stabilization. Information about sediment dynamics should guide stakeholders in establishing strategies to reduce sediment loads and mitigate the impacts on urban aquatic ecosystems.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
- urbanization
- land-use
- suspended sediment concentration
- spatiotemporal variation
Added entries (persons, corporate bodies, meetings, titles ...)
- Walsh, R. P. D. (author)
- Kalantari, ZahraStockholms universitet,Institutionen för naturgeografi(Swepub:kth)u1dxr4oj (author)
- Ferreira, A. J. D. (author)
- Stockholms universitetInstitutionen för naturgeografi (creator_code:org_t)
Related titles
- In:Water: MDPI AG12:32073-4441
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