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Test of methodology for developing a large wood budget: A 1-year example from a regulated gravel bed river following ordinary floods
Indexado
WoS WOS:000430994900012
Scopus SCOPUS_ID:85041615410
DOI 10.1016/J.CATENA.2018.01.035
Año 2018
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Wood budgeting is a current approach for quantifying the spatial and temporal variations of in-channel large wood (LW). Despite its importance for a proper LW management, the assessment of LW budget is still a challenge because of the complexity of LW dynamics. Focusing on a 3.7 km-long gravel-bed reach of the Piave River (North-eastern Italy), this study proposes an attempt to assess a short-term (1 year) LW budget as a consequence of ordinary floods (RI < 1 yr). Lateral recruitment, mobilization and deposition of LW were investigated by two field surveys conducted at the beginning and end of the study period. The lateral input was evaluated by measuring, positioning and tagging all standing trees (diameter >= 0.1 m) within a 20 m-wide buffer strip along the floodplain and island perimeters. Bank erosion was checked by measuring the riverbanks with a differential Global Positioning System (dGPS), during the first and second survey. Contemporarily, the position and characteristics of each fluvial wood element (diameter >= 0.1 m and length >= 1 m) within the active channel was determined. These short-term analyses revealed that ordinary floods are not able to induce relevant variations in the LW abundance and redistribution of in-channel wood. Nevertheless, the results highlighted the role of riverbank erosion in supplying LW to the active channel. Episodic inputs of LW from bank erosion were also observed during ordinary flood events, introducing 33% (0.21 m(3).km(-1)) of the total LW input amount. Results on LW transport showed that, in the Piave River, both deposition and mobilization of LW may also occur during low flow conditions (i.e. 14% of bankfull stage) without causing important variations in the wood quantity. However, the low magnitude of floods was reflected in the small amount of LW involved in the input (0.4 m(3).km(-1)) and output (0.7 m(3).km(-1)) processes, pointing out that sites for deposition and mobilization of LW are conditioned by flood magnitude and morphological settings. The combination of recruitment, mobilization and deposition processes resulted in a slight decrease of LW storage (-0.07%), while including also the anthropic removal of LW the amount of wood storage decreased to -9.7%. Despite the short-term investigation, this work sheds further light on LW processes, providing useful results for the management of LW in wide piedmont rivers.

Revista



Revista ISSN
Catena 0341-8162

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Disciplinas de Investigación



WOS
Soil Science
Geosciences, Multidisciplinary
Water Resources
Scopus
Earth Surface Processes
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Tonon, A. - Univ Padua - Italia
Università degli Studi di Padova - Italia
2 Picco, L. Hombre Univ Padua - Italia
Universidad Austral de Chile - Chile
Università degli Studi di Padova - Italia
3 Rainato, R. Hombre Univ Padua - Italia
Università degli Studi di Padova - Italia

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Origen de Citas Identificadas



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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 5.26 %
Citas No-identificadas: 94.74 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 5.26 %
Citas No-identificadas: 94.74 %

Financiamiento



Fuente
University of Padova
University of Padova Research Projects CPDA149091
University of Padova Research Projects

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Agradecimientos



Agradecimiento
This research is funded by the "University of Padova Research Projects CPDA149091 - WoodAlp: linking Large Wood and morphological dynamics of gravel bed rivers of Eastern Italian Alps- 2014-16", "Relationship between sediment transport, riparian vegetation and Large Wood along a gravel bed river: the Piave River study case (North-East Italy) - DOR1695175" and by the "University of Padova Research Projects 'Sediment transfer processes in an Alpine basin: sediment cascades from hillslopes to the channel network-BIRD167919'". The authors would like to thank Regional Agency for Environmental Prevention and Protection of Veneto (ARPAV), for technical information about the hydropower plants and Alison Garside for revising the English language. The authors also thank the Editor Estela Nadal Romero and three anonymous reviewers for constructive comments, which improved the manuscript.
This research is funded by the “ University of Padova Research Projects CPDA149091 - WoodAlp: linking Large Wood and morphological dynamics of gravel bed rivers of Eastern Italian Alps- 2014-16”, “Relationship between sediment transport, riparian vegetation and Large Wood along a gravel bed river: the Piave River study case (North-East Italy) - DOR1695175 ” and by the “ University of Padova Research Projects ‘Sediment transfer processes in an Alpine basin: sediment cascades from hillslopes to the channel network- BIRD167919 ’”. The authors would like to thank Regional Agency for Environmental Prevention and Protection of Veneto (ARPAV), for technical information about the hydropower plants and Alison Garside for revising the English language. The authors also thank the Editor Estela Nadal Romero and three anonymous reviewers for constructive comments, which improved the manuscript.

Muestra la fuente de financiamiento declarada en la publicación.