Log in

Relevant bibliographies by topics / LWD (large woody debris) / Journal articles

To see the other types of publications on this topic, follow the link: LWD (large woody debris).

Journal articles on the topic 'LWD (large woody debris)'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'LWD (large woody debris).'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Marston, Richard, and Robin Gray. "Spatial Distribution of Large Woody Debris on the Snake River, Grand Teton National Park." UW National Parks Service Research Station Annual Reports 23 (January 1, 1999): 119–23. http://dx.doi.org/10.13001/uwnpsrc.1999.3385.

Full text

Abstract:

Large woody debris (LWD) plays a key role in controlling the ecology and geomorphology of streams. Woody debris traps coarse particulate organic matter and sediments (Andersen and Sedell, 1979; Bilby and Likens, 1980; Marston, 1982); provides habitat for aquatic insects (Angermeier and Karr, 1984; Benke et al., 1985); and provides cover in pools and slow water areas (Bisson et al., 1982, 1987; Tschaplinski and Hartman, 1983; Fausch and Northcote, 1992). The role of wood in affecting stream morphology is dependent on the size of the stream (Bilby and Ward, 1989). In smaller streams, woody debri

APA, Harvard, Vancouver, ISO, and other styles

2

Wilson, Jessica, Ioan Nistor, Majid Mohammadian, Andrew Cornett, Pauline Falkenrich, and Grant Lamont. "NATURE-BASED COASTAL PROTECTION USING LARGE WOODY DEBRIS." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 8. http://dx.doi.org/10.9753/icce.v36v.management.8.

Full text

Abstract:

In British Columbia (BC), Canada, and Washington State, USA, anchored Large Woody Debris (LWD) have been extensively used with the specific aim of reducing erosion and limiting wave run-up. Despite its frequent usage, there is currently limited peer-reviewed literature on the design or efficacy of coastal protection using LWD. This paper presents the results of the first systematic research project on this topic, which involved (1) extensive field investigations of existing anchored LWD projects, and (2) large-scale experimental wave modeling of simulated LWD on a gravel beach. The full paper

APA, Harvard, Vancouver, ISO, and other styles

3

Gomi, Takashi, Roy C. Sidle, Mason D. Bryant, and Richard D. Woodsmith. "The characteristics of woody debris and sediment distribution in headwater streams, southeastern Alaska." Canadian Journal of Forest Research 31, no. 8 (2001): 1386–99. http://dx.doi.org/10.1139/x01-070.

Full text

Abstract:

Large woody debris (LWD), fine woody debris (FWD), fine organic debris (FOD), and sediment deposition were measured in 15 steep headwater streams with five management and disturbance regimes. Clear-cut channels logged in 1995 contained large accumulations of logging residue that initially provided sites for sediment storage. Half of the LWD in clear-cut channels was recruited during and immediately after logging. Woody debris from logging activities remains in young growth conifer channels 37 years after logging. Numbers of LWD in clear-cut and young conifer channels were significantly higher

APA, Harvard, Vancouver, ISO, and other styles

4

White, Laurent, Ben R. Hodges, Barney N. Austin, and Tim D. Osting. "Identification of submerged large woody debris from single-beam echo soundings." Journal of Hydroinformatics 8, no. 1 (2006): 1–12. http://dx.doi.org/10.2166/jh.2006.023.

Full text

Abstract:

Submerged large woody debris (LWD) in rivers and streams appears as spikes in bathymetry data collected at a decimeter resolution with a single-beam echo sounder. The LWD signal distorts any subsequent interpolation of bathymetry to an hydraulic model mesh or to a triangulated irregular network (TIN) for Geographical Information Systems (GIS). Two methods for separating the submerged LWD from the background bathymetry are investigated: 1) a new σ-discrimination method and 2) an adaptation of prior scale-space analysis techniques. The former is shown to effectively separate LWD from the backgro

APA, Harvard, Vancouver, ISO, and other styles

5

Powell, S. R., L. D. Daniels, and T. A. Jones. "Temporal dynamics of large woody debris in small streams of the Alberta foothills, Canada." Canadian Journal of Forest Research 39, no. 6 (2009): 1159–70. http://dx.doi.org/10.1139/x09-035.

Full text

Abstract:

Large woody debris (LWD) is a key link between riparian forests and streams; however, the temporal dynamics of in-stream wood remains poorly quantified. Using dendrochronology, we evaluated the dynamics of five Pinus -dominated and five Picea -dominated riparian forests in the foothills of Alberta and cross-dated the ring widths of 186 pieces of LWD. Time since death of LWD ranged from 2 to 143 years, with maximums of 86 and 143 years for Pinus and Picea, respectively. Recruitment of Pinus LWD was influenced by stand-replacing fires followed by self-thinning about 40 years after stand establis

APA, Harvard, Vancouver, ISO, and other styles

6

Gasser, Eric, Andrew Simon, Paolo Perona, Luuk Dorren, Johannes Hübl, and Massimiliano Schwarz. "Quantification of potential recruitment of large woody debris in mountain catchments considering the effects of vegetation on hydraulic and geotechnical bank erosion and shallow landslides." E3S Web of Conferences 40 (2018): 02046. http://dx.doi.org/10.1051/e3sconf/20184002046.

Full text

Abstract:

Large woody debris (LWD) exacerbates flood damages near civil structures and in urbanized areas and the awareness of LWD as a risk is becoming more and more relevant. The recruitment of “fresh” large woody debris has been documented to play a significant role of the total amount of wood transported during flood events in mountain catchments. Predominately, LWD recruitment due to hydraulic and geotechnical bank erosion and shallow landslides contribute to high volumes of wood during floods. Quantifying the effects of vegetation on channel and slope processes is extremely complex. This manuscrip

APA, Harvard, Vancouver, ISO, and other styles

7

Rybníček, Michal, T. Kolář, and E. Koňasová. "Dendrochronological dating of large woody debris on the example of Morávka River and Černá Opava River." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 58, no. 4 (2010): 193–202. http://dx.doi.org/10.11118/actaun201058040193.

Full text

Abstract:

Woody debris is an inseparable part of natural river channels. In a river ecosystem it affects the hydraulic, hydrological and morphological properties of the channel, and it is also of a biological significance. However, besides the positive effects, the woody debris can also have a negative impact, e.g. the reduction of the flow profile capacity or the destruction of waterside buildings. With the development of log floating and timber trade, the woody debris started to be removed from the channels. Currently, within the process of stream revitalization, woody debris is being artificially

APA, Harvard, Vancouver, ISO, and other styles

8

Hilderbrand, R. H., A. D. Lemly, C. A. Dolloff, and K. L. Harpster. "Effects of large woody debris placement on stream channels and benthic macroinvertebrates." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 4 (1997): 931–39. http://dx.doi.org/10.1139/f96-334.

Full text

Abstract:

Large woody debris (LWD) was added as an experimental stream restoration technique in two streams in southwest Virginia. Additions were designed to compare human judgement in log placements against a randomized design and an unmanipulated reach, and also to compare effectiveness in a low- and a high-gradient stream. Pool area increased 146% in the systematic placement and 32% in the random placement sections of the low-gradient stream, lending support to the notion that human judgement can be more effective than placing logs at random in low-gradient streams. Conversely, the high-gradient stre

APA, Harvard, Vancouver, ISO, and other styles

9

Bilby, Robert E., and James W. Ward. "Characteristics and Function of Large Woody Debris in Streams Draining Old-Growth, Clear-Cut, and Second-Growth Forests in Southwestern Washington." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 12 (1991): 2499–508. http://dx.doi.org/10.1139/f91-291.

Full text

Abstract:

Amount of large woody debris (LWD) surveyed in 70 stream reaches flowing through old-growth, clear-cut, and second-growth forests decreased with increasing stream size for all stand types but was greatest at old-growth sites. Average piece volume was larger at old-growth sites than at other stand types in streams >10 m wide, but no differences were seen in smaller streams. Scour pools accounted for 90% of the wood-associated pools at second-growth and clear-cut sites but only 50% at old-growth sites, which contained more pools than other stand types, particularly for larger streams. Pool si

APA, Harvard, Vancouver, ISO, and other styles

10

Teply, Mark, Dale McGreer, Dennis Schult, and Patrick Seymour. "Simulating the Effects of Forest Management on Large Woody Debris in Streams in Northern Idaho." Western Journal of Applied Forestry 22, no. 2 (2007): 81–87. http://dx.doi.org/10.1093/wjaf/22.2.81.

Full text

Abstract:

Abstract Existing models for simulating large woody debris (LWD) loads of forest streams were adapted for forest conditions in northern Idaho. Effects of riparian management prescriptions implemented for streams within a habitat conservation planning area for bull trout and other sensitive species were evaluated based on riparian and instream LWD conditions observed along 58 randomly selected stream segments. A wood budgeting system presented by Welty et al. (2002. Riparian aquatic interaction simulator (RAIS): A model of riparian forest dynamics for the generation of large woody debris and sh

APA, Harvard, Vancouver, ISO, and other styles

11

Suzuki, Waku, Sohei Kobayashi, Sameh Kantoush, Yasuhiro Takemon, and Tetsuya Sumi. "Estimating large woody debris volume and distribution floated and accumulated in reservoir using aerial photographs." E3S Web of Conferences 40 (2018): 03037. http://dx.doi.org/10.1051/e3sconf/20184003037.

Full text

Abstract:

Large woody debris (LWD) could increase the risk of flooding in the event of heavy rainfall, and fast estimation of the accumulated LWD is crucial for river basin management. We develop a method to automatically detect LWD floating in reservoirs using airborne images, and estimated the total volume of LWD accumulated in a reservoir during a severe flood event in northern Kyushu, Japan, early July 2017. The LWD was successfully extracted from the images based on colour and brightness by using ImageJ. The total volume of the accumulated LWD estimated from images was similar to the LWD volume act

APA, Harvard, Vancouver, ISO, and other styles

12

Fausch, Kurt D., and Thomas G. Northcote. "Large Woody Debris and Salmonid Habitat in a Small Coastal British Columbia Stream." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 4 (1992): 682–93. http://dx.doi.org/10.1139/f92-077.

Full text

Abstract:

Sections of a small coastal British Columbia stream that had previously been cleaned of large woody debris (LWD) were compared with sections where most debris was left and with others where debris had been relatively undisturbed for at least 40 yr. Three sections where debris had been removed had simple habitat that was less sinuous, wider, and shallower and had less pool volume and overhead cover than four sections with more complex habitat where debris was retained. Habitat in four relatively undisturbed sections was generally similar to complex sections. Most pools in all sections were scou

APA, Harvard, Vancouver, ISO, and other styles

13

Hedman, Craig W., David H. Van Lear, and Wayne T. Swank. "In-stream large woody debris loading and riparian forest seral stage associations in the southern Appalachian Mountains." Canadian Journal of Forest Research 26, no. 7 (1996): 1218–27. http://dx.doi.org/10.1139/x26-136.

Full text

Abstract:

Large woody debris (LWD) is an important ecological component of mountain streams. However, the relation of LWD loading and riparian forest composition is poorly understood in the southern Appalachians. In this study, 500-m reaches of 11 riparian forest–stream systems representing a 300-year sere were inventoried and measured to obtain quantitative estimates and descriptions of in-stream LWD. Loading volumes ranged from 7.1 to 31.2 m3/100 m of stream, or between 3.6 and 13.2 kg/m2. LWD loadings were highly variable during midseral stages of plant community succession, primarily because of the

APA, Harvard, Vancouver, ISO, and other styles

14

Curran, Joanna C. "Mobility of large woody debris (LWD) jams in a low gradient channel." Geomorphology 116, no. 3-4 (2010): 320–29. http://dx.doi.org/10.1016/j.geomorph.2009.11.027.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Kreutzweiser, David P., Kevin P. Good, and Trent M. Sutton. "Large woody debris characteristics and contributions to pool formation in forest streams of the Boreal Shield." Canadian Journal of Forest Research 35, no. 5 (2005): 1213–23. http://dx.doi.org/10.1139/x05-053.

Full text

Abstract:

The inputs, characteristics, and function of large woody debris (LWD) were assessed in 16 mid-order (average channel widths of 37 m), moderate-gradient (approx. 1%5% channel slopes) streams in mixedwood forests of the Boreal Shield in Ontario. Three of the streams were adjacent to clearcuts, with the remainder in areas that have not been logged or recently (>70 years) burned. The average frequency (19.9 pieces·100 m1) and size (mean diameter 16.7 cm) of LWD in these streams were less than reported in most other regions and forest types. Averaged across sites, input sources were undetermi

APA, Harvard, Vancouver, ISO, and other styles

16

L. Ryland, Alexandra, and Sean C. Thomas. "Monitoring riparian restoration to ensure recruitment of large woody debris in Haida Gwaii, British Columbia." Forestry Chronicle 88, no. 02 (2012): 131–39. http://dx.doi.org/10.5558/tfc2012-029.

Full text

Abstract:

Monitoring is a fundamental aspect of restoration, as it determines when the restoration objectives have been met. As restoration objectives are not universal, monitoring needs to be included in the development and design of each restoration project. We assessed the effectiveness and efficiency of a forest stand dynamic monitoring plan, developed for use with riparian restoration occurring on Lyell Island, Haida Gwaii, British Columbia. The restoration objective is to accelerate the development of late-successional forests for the benefit of riparian wildlife species and recruitment of in-stre

APA, Harvard, Vancouver, ISO, and other styles

17

Hauer, F. Richard, Geoffrey C. Poole, John T. Gangemi, and Colden V. Baxter. "Large woody debris in bull trout (Salvelinus confluentus) spawning streams of logged and wilderness watersheds in northwest Montana." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 6 (1999): 915–24. http://dx.doi.org/10.1139/f99-014.

Full text

Abstract:

We measured large woody debris (LWD) in 20 known bull trout (Salvelinus confluentus) spawning stream reaches from logged and wilderness watersheds in northwestern Montana. Mean bankfull width of stream reaches was 14.1 m ranging from 3.9 to 36.7 m. Streams were large enough to move LWD and form aggregates. We determined the characteristics of individual pieces of LWD that were interactive with the stream channel. Large, short pieces of LWD attached to the stream bank were the most likely to be positioned perpendicular to stream flow, while large, long pieces either tended to be parallel to the

APA, Harvard, Vancouver, ISO, and other styles

18

Wing, Michael G., and Arne Skaugset. "Relationships of channel characteristics, land ownership, and land use patterns to large woody debris in western Oregon streams." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 5 (2002): 796–807. http://dx.doi.org/10.1139/f02-052.

Full text

Abstract:

Regression tree analysis was used to test the relationship of channel and aquatic habitat characteristics from 3793 stream reaches in western Oregon State to the abundance of large woody debris (LWD). Stream reaches were drawn from diverse ownerships and land uses land cover types over a broad geographic extent. When all land uses land covers were considered, ownership and land use patterns were related to LWD abundance. When nonforested land uses were excluded, however, these factors became less important. In forested streams, LWD abundance was predicted primarily by stream gradient and b

APA, Harvard, Vancouver, ISO, and other styles

19

Bragg, Don C., and Jeffrey L. Kershner. "Sensitivity of a Riparian Large Woody Debris Recruitment Model to the Number of Contributing Banks and Tree Fall Pattern." Western Journal of Applied Forestry 19, no. 2 (2004): 117–22. http://dx.doi.org/10.1093/wjaf/19.2.117.

Full text

Abstract:

Abstract Riparian large woody debris (LWD) recruitment simulations have traditionally applied a random angle of tree fall from two well-forested stream banks. We used a riparian LWD recruitment model (CWD, version 1.4) to test the validity of these assumptions. Both the number of contributing forest banks and predominant tree fall direction significantly influenced simulated riparian LWD delivery, but there was no apparent interaction between these factors. Pooled across all treatments, the average predicted 300-year cumulative LWD recruitment was 77.1 m3/100 m reach with both banks forested c

APA, Harvard, Vancouver, ISO, and other styles

20

McHenry, Michael L., Eric Shott, Robert H. Conrad, and Glenn B. Grette. "Changes in the quantity and characteristics of large woody debris in streams of the Olympic Peninsula, Washington, U.S.A. (1982-1993)." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 6 (1998): 1395–407. http://dx.doi.org/10.1139/f98-013.

Full text

Abstract:

We assessed the changes in large woody debris (LWD) abundance and composition at 28 sites in 27 low-gradient Olympic Peninsula streams between 1982 and 1993. The average number of pieces of debris was virtually identical (P = 0.98) in both years (50.7 versus 50.6). However, we found a significant (P <= 0.01) reduction in the total volume of LWD material in the stream sites surveyed (51.7 m3 ·100 m-1 in 1982 to 38.2 m3 ·100 m-1 in 1993). While the mean volume of second-growth derived LWD increased from 3.6 to 10.9 m3 ·100 m-1 (P < 0.01), the increase was insufficient to offset the loss of

APA, Harvard, Vancouver, ISO, and other styles

21

Johnston, N. T., S. A. Bird, D. L. Hogan, and E. A. MacIsaac. "Mechanisms and source distances for the input of large woody debris to forested streams in British Columbia, Canada." Canadian Journal of Forest Research 41, no. 11 (2011): 2231–46. http://dx.doi.org/10.1139/x11-110.

Full text

Abstract:

The geomorphic process domain concept predicts consistent associations between stream channel geomorphology and large woody debris (LWD) input mechanisms. We used synoptic surveys at 51 stream reaches adjacent to undisturbed mature or old-growth forests in central and southern British Columbia to test associations between stream geomorphology and the input processes, source distances, physical characteristics, and geomorphic functions of LWD within the bankfull channel. Standing dead tree fall was the dominant input mechanism, but bank erosion was important in low- and medium-gradient channels

APA, Harvard, Vancouver, ISO, and other styles

22

Ralph, Stephen C., Geoffrey C. Poole, Loveday L. Conquest, and Robert J. Naiman. "Stream Channel Morphology and Woody Debris in Logged and Unlogged Basins of Western Washington." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 1 (1994): 37–51. http://dx.doi.org/10.1139/f94-006.

Full text

Abstract:

Channel morphology and habitat characteristics of stream segments draining unharvested old-growth forests were compared with those from streams within intensively and moderately logged basins. Sites covered a broad geographic range in western Washington State and were stratified by basin area and channel gradient. Although the number of pieces of large woody debris (LWD) within stream channels was unaffected by timber harvest, there was a clear reduction in LWD size in harvested basins. Timber harvest also resulted in a shift in location of LWD towards the channel margins, outside the low-flow

APA, Harvard, Vancouver, ISO, and other styles

23

Hou, Jingming, Bingyao Li, Yu Tong, et al. "Cause analysis for a new type of devastating flash flood." Hydrology Research 51, no. 1 (2019): 1–16. http://dx.doi.org/10.2166/nh.2019.091.

Full text

Abstract:

Abstract This work introduces an unprecedented flash flood that resulted in nine casualties in Shimen Valley, China, 2015. Through field survey and numerical simulation the causes of the disaster are systematically analyzed, finding that the intense storm, terrain features, and the large woody debris (LWD) played important roles. The intense storm induced fast runoff and, in turn, high discharges as a result of the steep catchment surfaces and channels. The flood flushed LWD and boulders downstream until blockage occurred in a contraction section, forming a debris lake. When the debris dam bro

APA, Harvard, Vancouver, ISO, and other styles

24

Roni, Philip, and Thomas P. Quinn. "Density and size of juvenile salmonids in response to placement of large woody debris in western Oregon and Washington streams." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 2 (2001): 282–92. http://dx.doi.org/10.1139/f00-246.

Full text

Abstract:

Thirty streams in western Oregon and Washington were sampled to determine the responses of juvenile salmonid populations to artificial large woody debris (LWD) placement. Total pool area, pool number, LWD loading, and LWD forming pools were higher in treatment (LWD placement) than paired reference reaches during summer or winter. Juvenile coho salmon (Oncorhynchus kisutch) densities were 1.8 and 3.2 times higher in treated reaches compared with reference reaches during summer and winter, respectively. The response (treatment minus reference) of coho density to LWD placement was correlated with

APA, Harvard, Vancouver, ISO, and other styles

25

Mossop, Brent, and Michael J. Bradford. "Importance of large woody debris for juvenile chinook salmon habitat in small boreal forest streams in the upper Yukon River basin, Canada." Canadian Journal of Forest Research 34, no. 9 (2004): 1955–66. http://dx.doi.org/10.1139/x04-066.

Full text

Abstract:

The importance of large woody debris (LWD) in forested stream ecosystems is well documented. However, little is known about LWD in northern boreal forest streams. We investigated the abundance, characteristics, and function of LWD in 13 small tributary streams of the upper Yukon River basin, Yukon Territory, Canada. LWD abundance was similar to values reported from temperate regions, whereas LWD size and total volume were well below values for the Pacific Northwest. LWD formed 28% of the pools, which provide important habitat for juvenile chinook salmon (Oncorhynchus tshawytscha Walbaum). The

APA, Harvard, Vancouver, ISO, and other styles

26

Martin, Douglas J., and Richard A. Grotefendt. "Stand mortality in buffer strips and the supply of woody debris to streams in Southeast Alaska." Canadian Journal of Forest Research 37, no. 1 (2007): 36–49. http://dx.doi.org/10.1139/x06-209.

Full text

Abstract:

We compared the stand conditions in buffer strips with those in unlogged riparian stands with similar site characteristics using large-scale aerial photography to deduce differences in stand mortality and large woody debris (LWD) recruitment. We found the cumulative stand mortality (CSM) was significantly greater in buffer units compared with reference units and that mortality varied with distance from the stream. In the inner zone (0–10 m from stream), the mean difference in CSM between buffer and reference units was relatively small (22% of unlogged CSM), but the CSM in the buffer units of t

APA, Harvard, Vancouver, ISO, and other styles

27

Ortega-Terol, Damian, Miguel Moreno, David Hernández-López, and Pablo Rodríguez-Gonzálvez. "Survey and Classification of Large Woody Debris (LWD) in Streams Using Generated Low-Cost Geomatic Products." Remote Sensing 6, no. 12 (2014): 11770–90. http://dx.doi.org/10.3390/rs61211770.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Falkenrich, Pauline, Jessica Wilson, Ioan Nistor, Nils Goseberg, Andrew Cornett, and Abdolmajid Mohammadian. "Nature-Based Coastal Protection by Large Woody Debris as Compared to Seawalls: A Physical Model Study of Beach Morphology and Wave Reflection." Water 13, no. 15 (2021): 2020. http://dx.doi.org/10.3390/w13152020.

Full text

Abstract:

Anchored Large Woody Debris (LWD) is increasingly being used as one of several nature-based coastal protection strategies along the north-western coasts of Canada and the US. As an alternative to conventional hard armoring (e.g., seawalls), its usage is widely considered to be less harmful to the coastal ecosystem while maintaining the ability to protect the beaches against wave attack and erosion. The effects of seawalls on beaches have been extensively studied; however, the performance and efficacy of LWD and its potential as a suitable alternative to seawalls (and other shoreline protection

APA, Harvard, Vancouver, ISO, and other styles

29

Rot, Byron W., Robert J. Naiman, and Robert E. Bilby. "Stream channel configuration, landform, and riparian forest structure in the Cascade Mountains, Washington." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 4 (2000): 699–707. http://dx.doi.org/10.1139/f00-002.

Full text

Abstract:

The hierarchical relationship of five key elements, valley constraint, riparian landform, riparian plant community, channel type, and channel configuration, are described for 21 sites in mature to old-growth riparian forests of the western Cascades Mountains, Washington, U.S.A. Channel type (bedrock, plane-bed, and forced pool-riffle) was closely related to channel configuration (especially large woody debris (LWD) volume, density, and LWD-formed pools) at the smallest spatial scale and valley constraint at the largest. Valley constraint significantly influenced off-channel habitat (r2 = 0.71)

APA, Harvard, Vancouver, ISO, and other styles

30

Louhi, Pauliina, Teppo Vehanen, Ari Huusko, Aki Mäki-Petäys, and Timo Muotka. "Long-term monitoring reveals the success of salmonid habitat restoration." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 12 (2016): 1733–41. http://dx.doi.org/10.1139/cjfas-2015-0546.

Full text

Abstract:

The growing concern on declining salmonid populations has resulted in numerous restoration projects with variable responses worldwide. In this spatially replicated multiyear study, we assessed the long-term (12 years postrestoration) effects of in-stream habitat restoration (i.e., addition of boulders or large woody debris (LWD) together with boulders) on densities of three age-classes of juvenile brown trout (Salmo trutta) in six forest streams in northern Finland. LWD combined with boulders was more beneficial, particularly for the larger trout (age-2 and older), than were boulder structures

APA, Harvard, Vancouver, ISO, and other styles

31

Rosenfeld, Jordan, Marc Porter, and Eric Parkinson. "Habitat factors affecting the abundance and distribution of juvenile cutthroat trout (Oncorhynchus clarki) and coho salmon (Oncorhynchus kisutch)." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 4 (2000): 766–74. http://dx.doi.org/10.1139/f00-010.

Full text

Abstract:

The distribution, abundance, and habitat associations of juvenile anadromous coastal cutthroat trout (Oncorhynchus clarki) and coho salmon (Oncorhynchus kisutch) were evaluated using survey data from 119 sites in coastal British Columbia. Both cutthroat and coho occurred at their highest densities in very small streams (<5 m channel width), and bankfull channel width was the single best predictor of cutthroat presence (p = 0.0001) and density (R2 = 0.55). Within a channel, densities of coho and larger (yearling and older) cutthroat parr were highest in pools, while densities of young-of-the

APA, Harvard, Vancouver, ISO, and other styles

32

Smith, Alistair M. S., and Andrew T. Hudak. "Estimating combustion of large downed woody debris from residual white ash." International Journal of Wildland Fire 14, no. 3 (2005): 245. http://dx.doi.org/10.1071/wf05011.

Full text

Abstract:

The production of residual white ash patches within wildfires represents near-complete combustion of the available fuel and releases a considerable quantity of gases to the atmosphere. These patches are generally produced from combustion of large downed woody debris (LDWD) such as fallen trees and snags. However, LDWD are generally ignored in calculations of fuel combusted within environments where surface fires dominate (e.g. southern African savannas). To assess the potential of fractional white ash cover as a remotely sensed measure of LDWD combustion, both the proportion of the surface cov

APA, Harvard, Vancouver, ISO, and other styles

33

Johnston, N. T., E. A. MacIsaac, P. J. Tschaplinski, and K. J. Hall. "Effects of the abundance of spawning sockeye salmon (Oncorhynchus nerka) on nutrients and algal biomass in forested streams." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 3 (2004): 384–403. http://dx.doi.org/10.1139/f03-172.

Full text

Abstract:

We used natural variation in sockeye salmon (Oncorhynchus nerka) spawner biomass among sites and years in three undisturbed, forested watersheds in interior British Columbia to test the hypotheses that salmon were a major source of particulate organic matter inputs to the streams and that carcass biomass determined stream-water nutrient concentrations and epilithic algal production. Sockeye carcasses were retained at the spawning sites, primarily (7580%) by large woody debris (LWD) or pools formed by LWD. The abundance and distribution of sockeye salmon determined stream-water nutrient concen

APA, Harvard, Vancouver, ISO, and other styles

34

Korboulewsky, Nathalie, Isabelle Bilger, and Abdelwahab Bessaad. "How to Evaluate Downed Fine Woody Debris Including Logging Residues?" Forests 12, no. 7 (2021): 881. http://dx.doi.org/10.3390/f12070881.

Full text

Abstract:

Volume or biomass estimates of downed woody debris are crucial for numerous applications such as forest carbon stock assessment, biodiversity assessments, and more recently for environmental evaluations of biofuel harvesting practices. Both fixed-area sampling (FAS) and line-intersect sampling (LIS) are used in forest inventories and ecological studies because they are unbiased and accurate methods. Nevertheless, most studies and inventories take into account only coarse woody debris (CWD, >10 cm in diameter), although fine woody debris (FWD) can account for a large part of the total downed

APA, Harvard, Vancouver, ISO, and other styles

35

Turowski, J. M., A. Badoux, K. Bunte, C. Rickli, N. Federspiel, and M. Jochner. "The mass distribution of coarse particulate organic matter exported from an Alpine headwater stream." Earth Surface Dynamics 1, no. 1 (2013): 1–11. http://dx.doi.org/10.5194/esurf-1-1-2013.

Full text

Abstract:

Abstract. Coarse particulate organic matter (CPOM) particles span sizes from 1 mm, with a dry mass less than 1 mg, to large logs and entire trees, which can have a dry mass of several hundred kilograms. Pieces of different size and mass play different roles in stream environments, from being the prime source of energy in stream ecosystems to macroscopically determining channel morphology and local hydraulics. We show that a single scaling exponent can describe the mass distribution of CPOM heavier than 0.1 g transported in the Erlenbach, a steep mountain stream in the Swiss pre-Alps. This expo

APA, Harvard, Vancouver, ISO, and other styles

36

Andreoli, A., F. Comiti, L. Mao, A. Iroumé, and M. A. Lenzi. "Evaluación de los volúmenes y de los efectos hidro-morfológicos del material leñoso en dos torrentes andinos (Chile)." Ingeniería del agua 15, no. 3 (2008): 189. http://dx.doi.org/10.4995/ia.2008.2935.

Full text

Abstract:

Este estudio reporta las cantidades de material leñoso de gran tamaño (large woody debris o LWD) y los efectos asociados sobre la morfología del cauce y la hidráulica del flujo en dos cuencas de montaña de la zona “templada-cálida con lluvias invernales” de la Cordillera de los Andes, en Chile. Las cuencas analizadas del río Toro y del torrente Tres Arroyos (área de drenaje de 9 y de 11 km2, respectivamente) se ubican en la Región de la Araucanía, Chile y se caracterizan por una cobertura forestal de bosques nativos de Nothofagus y Araucaria. Cantidad, características y dimensiones de los resi

APA, Harvard, Vancouver, ISO, and other styles

37

Harvey, Bret C., Rodney J. Nakamoto, and Jason L. White. "Influence of large woody debris and a bankfull flood on movement of adult resident coastal cutthroat trout (Oncorhynchus clarki) during fall and winter." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 11 (1999): 2161–66. http://dx.doi.org/10.1139/f99-154.

Full text

Abstract:

To improve understanding of the significance of large woody debris to stream fishes, we examined the influence of woody debris on fall and winter movement by adult coastal cutthroat trout (Oncorhynchus clarki) using radiotelemetry. Fish captured in stream pools containing large woody debris moved less than fish captured in pools lacking large woody debris or other cover. Fish from pools lacking cover commonly moved to habitats with large boulders or brush, particularly during the day. Movements by fish over 1-day periods were strongly influenced by large woody debris or other elements providin

APA, Harvard, Vancouver, ISO, and other styles

38

Richmond, Ann D., and Kurt D. Fauseh. "Characteristics and function of large woody debris in subalpine Rocky Mountain streams in northern Colorado." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 8 (1995): 1789–802. http://dx.doi.org/10.1139/f95-771.

Full text

Abstract:

Large woody debris has been well studied in coastal forests of the Pacific Northwest, but little is known of its role in Rocky Mountain streams. Large woody debris was measured in 11 undisturbed streams draining subalpine old-growth forests in north central Colorado to assess abundance, characteristics, and function. Although large woody debris in Colorado had smaller diameter, length, and volume than in the Pacific Northwest, its abundance and function were similar. The majority of pools (76%) were plunge and dammed pools formed by large woody debris, most of which spanned the channels perpen

APA, Harvard, Vancouver, ISO, and other styles

39

Gorrod, E. J., P. Childs, D. A. Keith, et al. "Can ecological thinning deliver conservation outcomes in high-density river red gum forests? Establishing an adaptive management experiment." Pacific Conservation Biology 23, no. 3 (2017): 262. http://dx.doi.org/10.1071/pc16040.

Full text

Abstract:

Newly protected areas often have land-use legacies that affect their capacity to deliver conservation outcomes into the future. The management actions required to achieve conservation outcomes may be uncertain. This uncertainty may be resolved through experimental adaptive management that draws on knowledge of the ecology and history of the ecosystem. In New South Wales, Australia, river red gum (Eucalyptus camaldulensis) floodplain forests were gazetted as National Park in 2010, including Murray Valley National Park. Land-use legacies had resulted in one-third of river red gum forests and woo

APA, Harvard, Vancouver, ISO, and other styles

40

Sweka, John A., Kyle J. Hartman, and Jonathan M. Niles. "Long-Term Effects of Large Woody Debris Addition on Stream Habitat and Brook Trout Populations." Journal of Fish and Wildlife Management 1, no. 2 (2010): 146–51. http://dx.doi.org/10.3996/012010-jfwm-002.

Full text

Abstract:

Abstract In this study, we resurveyed stream habitat and sampled brook trout Salvelinus fontinalis populations 6 y after large woody debris additions to determine long-term changes in habitat and brook trout populations. In a previous study, we added large woody debris to eight streams in the central Appalachians of West Virginia to determine whether stream habitat could be enhanced and brook trout populations increased following habitat manipulation. The large woody debris additions had no overall effect on stream habitat and brook trout populations by 6 y after the additions. The assumption

APA, Harvard, Vancouver, ISO, and other styles

41

Perry, Brian, Colin Rennie, Andrew Cornett, and Paul Knox. "Comparison of Large Woody Debris Prototypes in a Large Scale Non-flume Physical Model." E3S Web of Conferences 40 (2018): 05010. http://dx.doi.org/10.1051/e3sconf/20184005010.

Full text

Abstract:

Due to excessive rainfall in June of 2013, several rivers located in and near the City of Calgary, Canada experienced significant flooding events. These events caused severe damage to infrastructure throughout the city, precipitating a renewed interest in flood control and mitigation strategies for the area. A major potential strategy involves partial diversion of Elbow River flood water to the proposed Springbank Off-Stream Storage Reservoir. A large scale physical model study was conducted to optimize and validate the design of a portion of the new project. The goals of the physical model we

APA, Harvard, Vancouver, ISO, and other styles

42

Shields, F. Douglas, Nathalie Morin, and Charles M. Cooper. "Large Woody Debris Structures for Sand-Bed Channels." Journal of Hydraulic Engineering 130, no. 3 (2004): 208–17. http://dx.doi.org/10.1061/(asce)0733-9429(2004)130:3(208).

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Manga, Michael, and James W. Kirchner. "Stress partitioning in streams by large woody debris." Water Resources Research 36, no. 8 (2000): 2373–79. http://dx.doi.org/10.1029/2000wr900153.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Plesiński, Karol. "Wpływ rumoszu drzewnego na granulometrię osadów korytowych." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 27, no. 1 (2018): 42–56. http://dx.doi.org/10.22630/pniks.2018.27.1.5.

Full text

Abstract:

The aim of paper is to investigate the impact of woody debris deposited on the river bed on the granulometry of the bed material. The analysis included upstream and downstream sides of the investigated woody debris. The investigations comprised determination of the geometric dimensions of the analyzed wood deposits, determination of the granulometric composition of the bed material in the area of deposition of woody debris, determination of the range of influence of the investigated woody debris on the bed material and determination of the relationship between the geometric dimensions of the w

APA, Harvard, Vancouver, ISO, and other styles

45

Sickle, John Van, and Stanley V. Gregory. "Modeling inputs of large woody debris to streams from falling trees." Canadian Journal of Forest Research 20, no. 10 (1990): 1593–601. http://dx.doi.org/10.1139/x90-211.

Full text

Abstract:

A probabilistic model predicts means and variances of the total number and volume of large woody debris pieces falling into a stream reach per unit time. The estimates of debris input are based on the density (trees/area), tree size distribution, and tree-fall probability of the riparian stand adjacent to the reach. Distributions of volume, length, and orientation of delivered debris pieces are also predicted. The model is applied to an old-growth coniferous stand in Oregon's Cascade Mountains. Observed debris inputs from the riparian stand exceeded the inputs predicted from tree mortality rat

APA, Harvard, Vancouver, ISO, and other styles

46

Wallerstein, Nicholas P., Carlos V. Alonso, Sean J. Bennett, and Colin R. Thorne. "Distorted Froude-scaled flume analysis of large woody debris." Earth Surface Processes and Landforms 26, no. 12 (2001): 1265–83. http://dx.doi.org/10.1002/esp.271.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Kraft, Clifford E., and Dana R. Warren. "Development of spatial pattern in large woody debris and debris dams in streams." Geomorphology 51, no. 1-3 (2003): 127–39. http://dx.doi.org/10.1016/s0169-555x(02)00330-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Lienkaemper, G. W., and F. J. Swanson. "Dynamics of large woody debris in streams in old-growth Douglas-fir forests." Canadian Journal of Forest Research 17, no. 2 (1987): 150–56. http://dx.doi.org/10.1139/x87-027.

Full text

Abstract:

Transfer of large woody debris (>10 cm diameter) from old-growth Douglas-fir (Pseudotsugamenziesii (Mirbel) Franco) forests into five first-to fifth-order stream reaches (drainage areas of 0.1 to 60.5 km2) has ranged from 2.0 to 8.8 Mg•ha−1•year−1 in 7- to 9-year study periods. Amounts of large debris in these streams range from 230 to 750 Mg•ha−1 with generally lower values in larger channels. The addition of woody debris is widely scattered in time and space and comes mainly from single trees rooted away from the streambank. We infer that wind is a major agent for entry of wood into these

APA, Harvard, Vancouver, ISO, and other styles

49

McMahon, Thomas E., and L. Blair Holtby. "Behaviour, Habitat Use, and Movements of Coho Salmon (Oncorhynchus kisutch) Smolte during Seaward Migration." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 7 (1992): 1478–85. http://dx.doi.org/10.1139/f92-163.

Full text

Abstract:

Coho salmon (Oncorhynchus kisutch) smolts formed aggregations in pools with large woody debris during their migration downstream and into the Carnation Creek estuary, British Columbia. Smolts utilized the estuary throughout the smolt run, with periods of high outmigration coinciding with spring tides which brought warmer, more saline water into the estuary. Smolt abundance in the stream and estuary was positively related to debris volume, and 82% of the 1260 smolts observed during underwater counts occurred within 1 m of debris. Debris volume and smolt density were significantly lower in clear

APA, Harvard, Vancouver, ISO, and other styles

50

Knight, Dennis, and Daniel Tinker. "The Effects of Fire on Coarse Woody Debris in Rocky Mountain Coniferous Forests." UW National Parks Service Research Station Annual Reports 19 (January 1, 1995): 37–38. http://dx.doi.org/10.13001/uwnpsrc.1995.3243.

Full text

Abstract:

Primary productivity, the accumulation of nutrients, and other important ecosystem processes are largely dependent on the mineral soil organic matter that has developed during hundreds or thousands of years. In forest ecosystems, the decomposition of coarse woody debris, woody roots, twigs, leaves and micro-organisms is a primary source of this organic matter. Large quantities of coarse woody debris are typically produced following natural disturbances such as fires, pest/pathogen outbreaks, and windstorms, which make a significant contribution to the formation of soil organic matter (SOM). In

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!