NDLI: Acumulaciones de detritos leñosos en un cauce de montaña de Tierra del Fuego: análisis de la movilidad y de los efectos hidromorfológicos

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Acumulaciones de detritos leñosos en un cauce de montaña de Tierra del Fuego: análisis de la movilidad y de los efectos hidromorfológicos

Content Provider	Semantic Scholar
Author	Mao, Luca Burns, Sarah Lilian Comiti, Francesco Andreoli, Andrea Urciuolo, Adriana B. Gaviño-Novillo, Marcelo Iturraspe, Rodolfo J. Lenzi, Mario Aristide
Copyright Year	2008
Abstract	SUMMARY This work reports on the geomorphic role of large wood pieces and jams in a third order mountain stream located in Southern Tierra del Fuego (Argentina), and draining an old-growth nothofagus forested basin not influenced by beaver damming activity. Even if the in-stream number of wood pieces (2,300) is comparable to that observed in other climatic areas, the slow growth of the nothofagus forest causes a lower wood abundance in terms of volumetric load (121 m 3 ha –1 ). Due to the relatively small dimensions of the large wood pieces located inside bankfull edges (83% of the total surveyed pieces), almost the 70% of them demonstrated to have been transported by runoff and 6% derived from bank erosion or landslides. Wood jams exert a significant influence on the channel morphology, being responsible for the creation of 30% of pools. The geomorphic influence of LW jams is also exerted by a considerable sediment storing capacity (about 1,750 m3). The LW-forced pool volume is strongly and positively correlated to the height of the LW jam. The results confirm that dead wood pieces, especially when organized in jams, play an important geomorphic role also in sub-Antarctic streams. The amount of large wood pieces quantified in the study site represents reference values for the assessment of the geomorphic effects of beaver activity in other Tierra del Fuego streams.
Starting Page	197
Ending Page	211
Page Count	15
File Format	PDF HTM / HTML
DOI	10.4067/S0717-92002008000300003
Volume Number	29
Alternate Webpage(s)	https://scielo.conicyt.cl/pdf/bosque/v29n3/art03.pdf
Alternate Webpage(s)	https://www.redalyc.org/pdf/1731/173113297003.pdf
Alternate Webpage(s)	https://doi.org/10.4067/S0717-92002008000300003
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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