Long-Term Dynamics of Coarse Particulate Organic Matter in Three Appalachian Mountain Streams

Wallace, J. Bruce; Whiles, Matt R.; Eggert, Susan L.; Cuffney, Thomas F.; Lugthart, G. J.; Chung, Kuo‐Fang

doi:10.2307/1467775

Cited by 150 publications

(184 citation statements)

References 36 publications

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“…Our value computed for small woody debris input (160 g AFDM m j year 1 ) is remarkably close to that of 163 g AFDM m j year 1 measured during 1985-1987 prior to canopy construction for this stream (WALLACE et al 1995). However, the standing crop of woody debris was greatly under-estimated using the 400-cm ).…”

Section: Discussionsupporting

confidence: 77%

“…Direct input of wood was measured with 0.25-m 2 " traps (WALLACE et al 1995) placed along or above the stream. Traps were placed inside (n = 16) and outside (n = 6) the net canopy.…”

Section: Methodsmentioning

confidence: 99%

“…Traps were placed inside (n = 16) and outside (n = 6) the net canopy. Lateral litter inputs were estimated using lateral movement traps (0.5 m long, WALLACE et al 1995) placed inside (n = 16) and outside (n = 6) the lateral movement fence of C 55. Traps were emptied weekly during October and November and monthly during other periods.…”

Section: Methodsmentioning

confidence: 99%

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Small wood dynamics in a headwater stream

Wallace¹,

Webster²,

Eggert³

et al. 2000

SIL Proceedings, 1922-2010

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Section: Discussionsupporting

confidence: 77%

“…Direct input of wood was measured with 0.25-m 2 " traps (WALLACE et al 1995) placed along or above the stream. Traps were placed inside (n = 16) and outside (n = 6) the net canopy.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Small wood dynamics in a headwater stream

Wallace¹,

Webster²,

Eggert³

et al. 2000

SIL Proceedings, 1922-2010

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“…Automatic basket samplers were used at higher discharges (from 200 to 1500 L s −1 , with most samples above 400 L s −1 ) (Rickenmann et al, 2012). Two samples were obtained from measuring woody material accumulated in the retention basin after two large floods that occurred in 1995(cf. Turowski et al, 2009.…”

Section: Methodsmentioning

confidence: 99%

The mass distribution of coarse particulate organic matter exported from an Alpine headwater stream

et al. 2013

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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 exponent takes an average value of −1.8, is independent of discharge and valid for particle masses spanning almost seven orders of magnitude. Similarly, the mass distribution of in-stream large woody debris (LWD) in several Swiss streams can be described by power law scaling distributions, with exponents varying between −1.8 and −2.0, if all in-stream LWD is considered, and between −1.3 and −1.8 for material locked in log jams. We found similar values for in-stream and transported material in the literature. We had expected that scaling exponents are determined by stream type, vegetation, climate, substrate properties, and the connectivity between channels and hillslopes. However, none of the descriptor variables tested here, including drainage area, channel bed slope and the percentage of forested area, show a strong control on exponent value. Together with a rating curve of CPOM transport rates with discharge, the scaling exponents can be used in the design of measuring strategies and in natural hazard mitigation.

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“…This inevitably overlooks coarse material. A few studies have specifically considered the transport of coarse POM (1 mm-10 cm), typically by capturing streamborne material in traps (Wallace et al 1995;Johnson et al 2006;Cordova et al 2008). However most of this material is leaf, litter, and small wood fragments, and such studies have not captured the transport of the largest trunks and branches that make up CWD (.…”

mentioning

confidence: 99%

Mobilization and transport of coarse woody debris to the oceans triggered by an extreme tropical storm

West

Lin

et al. 2010

Limnology & Oceanography

175

177

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A significant consequence of Typhoon Morakot in August 2009 was the production of vast volumes of driftwood in Pacific Asia. We have quantified the flux of this coarse woody debris (CWD) to the oceans from typhoontriggered landslides in Taiwan, where Morakot made landfall, by combining remote sensing (using FORMOSAT-2 imagery and aerial photography), analysis of forest biomass, and field observations. A total of 3.8-8.4 Tg CWD was transported to the oceans, carrying 1.8-4.0 Tg of organic carbon. In addition to the local effects on the marine and coastal environment from such a highly concentrated flux of carbon and nutrients, storm-driven mobilization of CWD may represent a significant, if infrequent, transfer of terrestrial biomass to the oceans. If the frequency of relatively rare, extreme storms such as Morakot increases in a changing climate, this transport mechanism may play an important role in feedbacks between global climate, storm intensity, and carbon cycling.

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Long-Term Dynamics of Coarse Particulate Organic Matter in Three Appalachian Mountain Streams

Cited by 150 publications

References 36 publications

Small wood dynamics in a headwater stream

Small wood dynamics in a headwater stream

The mass distribution of coarse particulate organic matter exported from an Alpine headwater stream

Mobilization and transport of coarse woody debris to the oceans triggered by an extreme tropical storm

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