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

Galia, Tomáš; Ruíz-Villanueva, Virginia; Tichavský, Radek; Šilhán, Karel; Horáček, Matěj; Stoffel, Markus

doi:10.1016/j.foreco.2018.05.031

Cited by 19 publications

(20 citation statements)

References 63 publications

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“…On the other hand, the presence of broadleaf trees implied the dominant supply of individual branches of lower lengths and diameters, and thus, broadleaf forest canopy had a positive effect on LW counts, as suggested by the separated GLM significant at p < 0.1 level (Table 2 and Figure 7h). A similar pattern of wood recruitment was observed in mixed-forest Carpathian headwater catchments, where the representative coniferous species (Norway spruce), with its dominant supply of whole trees, predicted high LW volume, while the broadleaf trees (mainly European beech) often delivered their fragments (i.e., individual branches) to the streams, leading to high LW frequency (Galia, Ruiz-Villanueva, et al, 2018). This also Figure 11.…”

Section: 1029/2019wr025094supporting

confidence: 67%

Drivers of Low Instream Large Wood Retention and Imprints of Wood Mobility in Mountain Nonperennial Streams of a Mediterranean Semiarid Environment

Galia

Horáček

Macurová

et al. 2019

Water Resources Research

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The majority of research on instream large wood (LW) focuses on perennial streams in temperate zones, and much less is known about wood distribution and its driving factors in other environments, such as semiarid bioclimatic regions. In this study, we sought to predict LW retention by assessing reach‐scale variables to infer the influence of external factors on the presence of LW in 37 independent reaches of ephemeral and intermittent streams draining a mountain range in a Mediterranean semiarid environment (Lefka Ori Mountains, Crete, Greece). In addition, we focused on LW pieces that had been mobilized by fluvial transport to find links between wood mobility and the external reach‐scale characteristics of this environment. Markedly low average LW frequency (6.5 LW/100 m) and volume (9.06 m3/ha) were observed in the studied reaches in comparison with streams draining other bioclimatic regions. Only one complex general linear model was found to predict LW volume (including valley confinement and basal area of coniferous trees), and five explanatory variables (elevation as a proxy of annual precipitation, valley type, valley confinement index, basal area of coniferous trees, and basal area of all trees) were significant in separated models predicting LW volume. Only two variables (valley floor width and the basal area of broadleaf trees) were significant in separated models for prediction of LW frequency. The mobilized LW in the studied streams tends to be stored as individual, dispersed pieces rather than in jams, likely due to overall low LW abundance which effectively prevents clustering of wood.

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Section: 1029/2019wr025094supporting

confidence: 67%

Drivers of Low Instream Large Wood Retention and Imprints of Wood Mobility in Mountain Nonperennial Streams of a Mediterranean Semiarid Environment

Galia

Horáček

Macurová

et al. 2019

Water Resources Research

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“…In particular, researchers need to consider density dependence in fish populations and the causes of density dependence, such as food availability, habitat quality, flood refuge, drought refuge, and thermal refuge. Also, far more studies have examined the ecological and geomorphic influences of large wood, but the relationships with small wood (<1 m length and 10 cm diameter) have received far less attention (Ward and Aumen, 1986; Enefalk and Bergman, 2016; Galia et al ., 2018). Addressing other gaps in large wood research, such as attention to dynamics and roles of wood on floodplains, can be complicated by the need for cross‐discipline collaboration, such as between terrestrial and stream ecologists.…”

Section: Knowledge Gaps and Future Workmentioning

confidence: 99%

Reflections on the history of research on large wood in rivers

Swanson

Gregory

Iroumé

et al. 2020

Earth Surf Processes Landf

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Dynamics and functions of large wood have become integral considerations in the science and management of river systems. Study of large wood in rivers took place as monitoring of fish response to wooden structures placed in rivers in the central United States in the early 20th century, but did not begin in earnest until the 1970s. Research has increased in intensity and thematic scope ever since. A wide range of factors has prompted these research efforts, including basic understanding of stream systems, protection and restoration of aquatic ecosystems, and environmental hazards in mountain environments. Research and management have adopted perspectives from ecology, geomorphology, and engineering, using observational, experimental, and modelling approaches. Important advances have been made where practical information needs converge with institutional and science leadership capacities to undertake multi‐pronged research programmes. Case studies include ecosystem research to inform regulations for forest management; storage and transport of large wood as a component in global carbon dynamics; and the role of wood transport in environmental hazards in mountain regions, including areas affected by severe landscape disturbances, such as volcanic eruptions. As the field of research has advanced, influences of large wood on river structures and processes have been merged with understanding of streamflow and sediment regimes, so river form and function are now viewed as involving the tripartite system of water, sediment, and wood. A growing community of researchers and river managers is extending understanding of large wood in rivers to climatic, forest, landform, and social contexts not previously investigated. © 2020 John Wiley & Sons, Ltd.

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“…CPOM provides an important food source for benthic organisms (Bunte et al ., 2016) and may significantly contribute to the total carbon exported at the catchment scale (Elosegi et al ., 2007; Sutfin et al ., 2016; Turowski et al ., 2016). In addition, the aggregation or presence of CPOM within a LW accumulation decreases its porosity and generates a more heterogeneous flow path and backwater rise due to an increase of friction losses (Schalko et al ., 2018), influencing the sediment dynamics and thereby the stream morphology (Galia et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Quantifying and understanding CPOM transport are relevant for assessing its morphological role (Galia et al ., 2018; Schalko et al ., 2018), its availability as a resource, potential contribution to energy flow (Fisher and Likens, 1972; Naiman and Sedell, 1979a; Wallace et al ., 1997), and its importance when establishing catchment carbon budgets (Bunte et al ., 2016). Many studies have addressed the export of CPOM in different environments (Fisher and Likens, 1972; Naiman and Sedell, 1979a; Newbern et al ., 1981; Wallace et al ., 1997; Bunte et al ., 2016; Johnson et al ., 2006; Rodríguez and Ospina, 2007; Cordova et al ., 2008; Turowski et al ., 2016).…”

Section: Introductionmentioning

confidence: 99%

Fluvial transport of coarse particulate organic matter in a coastal mountain stream of a rainy‐temperate evergreen broadleaf forest in southern Chile

Iroumé

Ruíz-Villanueva

Salas‐Coliboro

2020

Earth Surf Processes Landf

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Coarse particulate organic matter (CPOM, i.e. particles such as leaves, wood fragments, twigs, branches, flowers, seeds and fruits) in aquatic systems influences the flow, provides an important food source, and at the catchment scale, may significantly contribute to total carbon export. CPOM exports have rarely been quantified in subtropical, broadleaf forest streams. We captured CPOM in Bunte traps in the rainfall-dominated Vuelta de Zorra stream in southern Chile to (a) propose a novel classification to characterize the different CPOM components, (b) analyze the frequency of each matter class (i.e. leaves, wood fragments, and 'others') and its seasonal variability, (c) quantify the CPOM transported, (d) derive a model to quantify CPOM transport rates, and (e) compare the transported CPOM data with those from a unique long-term (> sevenyears) large wood monitoring dataset. Results showed that leaves were significantly more abundant than other types of CPOM in all seasons. The dry CPOM transport rate ranged over three orders of magnitude, and there was a significant relationship with mean discharge. Mean dry CPOM yield for the study period 2015-2017 was 4.6kg/ha/yr when normalizing to the total forested catchment area. The 2009-2018 decadal average yield was 6.8kg/ha/yr when normalizing to the total forested catchment area. These values are similar to measurements from deciduous and coniferous forests in streams in the United States and the Brazilian Mato Grosso and~1/10 of the yields obtained in a Swiss torrent. Over a three-year period, the CPOM exports in Vuelta de Zorra ranged between 13 and 36% of the exported large wood (particles with diameters ≥ 100mm and length ≥ 1m) exports. Our data collected from an underrepresented area improve the understanding of global carbon budgets and cycling.

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

Cited by 19 publications

References 63 publications

Drivers of Low Instream Large Wood Retention and Imprints of Wood Mobility in Mountain Nonperennial Streams of a Mediterranean Semiarid Environment

Drivers of Low Instream Large Wood Retention and Imprints of Wood Mobility in Mountain Nonperennial Streams of a Mediterranean Semiarid Environment

Reflections on the history of research on large wood in rivers

Fluvial transport of coarse particulate organic matter in a coastal mountain stream of a rainy‐temperate evergreen broadleaf forest in southern Chile

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