Characteristics and abundance of large and small instream wood in a Carpathian mixed-forest headwater basin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901VJ3" target="_blank" >RIV/61988987:17310/18:A1901VJ3 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.foreco.2018.05.031" target="_blank" >http://dx.doi.org/10.1016/j.foreco.2018.05.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.foreco.2018.05.031" target="_blank" >10.1016/j.foreco.2018.05.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characteristics and abundance of large and small instream wood in a Carpathian mixed-forest headwater basin

Popis výsledku v původním jazyce

The effect of instream wood on stream hydraulics and geomorphic processes depends on wood and channel dimensions. We investigated abundance and characteristics (i.e., wood orientation, proportion of spanned channel width, stability and decay classes) of large wood (LW; defined here as having a length >= 1 m and a diameter >= 0.1 m) and small wood (SW; including two categories with length a 0.5 m and diameter >= 0.1 m or length >= 1 m and diameter >= 0.05 m) in three steep, confined headwater channels of medium-high mountain ranges of the Western Carpathians (Central Europe). Results show that SW is more frequent than LW, however, active-channel LW load varied between 26 and 305 m(3).ha(-1), whereas SW showed much lower active-channel load (8-16 m(3).ha(-1)). Differences between LW and SW active-channel volumes were considerably smaller in streams under dominant deciduous canopy. In these streams, morphological steps - created exclusively by SW - were more frequent than LW steps. This higher frequency of SW in streams surrounded by a deciduous tree canopy can be explained by the continuous supply of branches rather than entire dead trees. On the other hand, the volume and frequency of LW was related to the proportion of conifers in the valley corridor. We observe very high active-channel load in two channel reaches for which values exceeded most of those observed in similarly small streams across the globe. We also observe an unusually large proportion of instream wood (both LW and SW) oriented parallel to the flow direction, which might suggest a higher mobility of bed material in the flyschdominated headwater channels of our study site.

Název v anglickém jazyce

Characteristics and abundance of large and small instream wood in a Carpathian mixed-forest headwater basin

Popis výsledku anglicky

The effect of instream wood on stream hydraulics and geomorphic processes depends on wood and channel dimensions. We investigated abundance and characteristics (i.e., wood orientation, proportion of spanned channel width, stability and decay classes) of large wood (LW; defined here as having a length >= 1 m and a diameter >= 0.1 m) and small wood (SW; including two categories with length a 0.5 m and diameter >= 0.1 m or length >= 1 m and diameter >= 0.05 m) in three steep, confined headwater channels of medium-high mountain ranges of the Western Carpathians (Central Europe). Results show that SW is more frequent than LW, however, active-channel LW load varied between 26 and 305 m(3).ha(-1), whereas SW showed much lower active-channel load (8-16 m(3).ha(-1)). Differences between LW and SW active-channel volumes were considerably smaller in streams under dominant deciduous canopy. In these streams, morphological steps - created exclusively by SW - were more frequent than LW steps. This higher frequency of SW in streams surrounded by a deciduous tree canopy can be explained by the continuous supply of branches rather than entire dead trees. On the other hand, the volume and frequency of LW was related to the proportion of conifers in the valley corridor. We observe very high active-channel load in two channel reaches for which values exceeded most of those observed in similarly small streams across the globe. We also observe an unusually large proportion of instream wood (both LW and SW) oriented parallel to the flow direction, which might suggest a higher mobility of bed material in the flyschdominated headwater channels of our study site.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10619 - Biodiversity conservation

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

FOREST ECOL MANAG

ISSN

0378-1127

e-ISSN

1872-7042

Svazek periodika

424

Číslo periodika v rámci svazku

Září

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

468-482

Kód UT WoS článku

000437967900044

EID výsledku v databázi Scopus

2-s2.0-85047094027