Effect of removal of wood on streambed stability and retention of organic matter

Díez, José Ramón; Larrañaga, Santiago; Elosegi, Arturo; Pozo, Jesús

doi:10.2307/1468121

Cited by 76 publications

(75 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In another large-scale (175-m reach) debris dam removal, Bilby (1981) reported a 72% loss in fine sediments stored behind debris dams that were collected in the ponding basin below the dam removal reach. The remaining inorganic substrate in our treatment stream consisted primarily of coarse sediments (pebbles and cobbles), which were no longer embedded in fine sediments, a result also noted by Díez et al (2000) in their wood removal manipulation. As expected, FIP export declined during the leaf addition periods with the fast breakdown leaves having the least retentive capacity compared to the addition of slow and mixed leaf species (Fig.…”

Section: Cpom and Fpom Standing Cropmentioning

confidence: 79%

“…Previous wood removal manipulations in headwater streams in which all wood (large and small) was removed, resulted in immediate declines in standing crops of CBOM (Bilby andLikens 1980, Angermeier andKarr 1984) and increased export of inorganic particles (Bilby 1981, Díez et al 2000, FPOM, and CPOM (Bilby and Likens 1980). In Virginia, a five-fold increase in the number of debris dams in a lowgradient headwater stream resulted in 6-113 increases in organic matter storage (Smock et al 1989).…”

Section: Importance Of Allochthonous Subsidies On Abiotic Ecosystem Pmentioning

confidence: 99%

See 1 more Smart Citation

Storage and export of organic matter in a headwater stream: responses to long‐term detrital manipulations

et al. 2012

View full text Add to dashboard Cite

Abstract. Riparian habitats provide organic matter inputs that influence stream biota and ecosystem processes in forested watersheds. Over a 13-yr period, we examined the effects of litter exclusion, smalland large-wood removal, and the addition of leaf species of varying detrital quality on organic matter standing crop and export of organic and inorganic particles in a high-gradient headwater stream. Using eight pretreatment years of export data and two pretreatment years of particulate organic matter (POM) standing crop data, we report on 21 and 15 years of continuous export and POM standing crop results, respectively. Litter exclusion resulted in the elimination of leaf standing crop by the end of year three. Wood and fine benthic organic matter (FBOM) standing crops declined significantly during the exclusion and wood removal periods, but never completely disappeared. Following the introduction of artificial wood structures for retention, the addition of fast, slow, and mixed breakdown leaves in the treatment stream resulted in significantly increased mean annual leaf standing crops. After five years of leaf addition, FBOM standing crop and fine particulate organic matter (FPOM) export remained below pre-treatment levels. The reduction in leaf standing crop in the treatment stream resulted in significant increases in FPOM (23), fine inorganic particulate (33), and gravel export (103). After small wood removal we observed significant increases in export of fine inorganic particulates (23) and gravel (73) from the treatment stream. A greater proportion of coarse and FBOM standing crop was exported from the treatment stream during the litter exclusion and small wood removal periods than from the reference stream. Following the addition of slow and mixed leaves this trend was reversed, demonstrating the importance of leaf standing crop in the retention of POM. Our long-term experiment demonstrates that the quantity and type of riparian inputs to forested headwater streams will affect POM standing crop and export of POM and sediments to downstream ecosystems, and that small wood is more critical to retaining sediments and POM in small streams than previously recognized.

show abstract

Section: Cpom and Fpom Standing Cropmentioning

confidence: 79%

Section: Importance Of Allochthonous Subsidies On Abiotic Ecosystem Pmentioning

confidence: 99%

Storage and export of organic matter in a headwater stream: responses to long‐term detrital manipulations

et al. 2012

View full text Add to dashboard Cite

show abstract

“…In the same way, when retention structures are submerged or carried downstream, it will result in greater loss of sediments (Díez et al, 2000;Afonso and Henry, 2002). Therefore, when litter input peaks coincide with low flows, CPOM tends to accumulate in the stream bed .…”

Section: Discussionmentioning

confidence: 99%

Input of litter in deforested and forested areas of a tropical headstream

Carvalho

Uieda

2010

Braz. J. Biol.

View full text Add to dashboard Cite

Riparian vegetation is the main source of leaves and the main energy source for low order streams. Therefore, changes in its composition affect the structure and processes in streams. We studied the contribution of the riparian vegetation by analysing the annual input of litter in deforested and forested areas of a tropical stream. The lateral, vertical (aerial) and horizontal (drift) litter inputs were analysed separately. The lateral input differed significantly between the two areas and included mostly fallen dry leaves. The vertical input, represented mainly by fallen dry leaves, occurred only in the forested area. The drift transport of litter was not significantly different between the deforested and forested areas and the input was composed mostly by CPOM. The removal of the native forest was clearly reflected in the low contribution of leaf litter in the deforested area.Keywords: annual input, Brazilian stream, detritus, riparian vegetation. Aporte de folhiço em áreas sem mata e com mata de galeria de um riacho tropical ResumoA vegetação ripária constitui um importante recurso energético em riachos de pequena ordem. Assim, mudanças em sua composição afetam a estrutura e os processos ecológicos em riachos. A contribuição da vegetação ripária foi analisada pela entrada anual de folhiço em duas áreas de um riacho tropical, uma cercada por mata de galeria e outra somente com vegetação arbustiva. A entrada lateral, vertical (aérea) e horizontal (drift) de material vegetal foi avaliada separadamente. A entrada lateral, composta principalmente de folhas secas, apresentou diferença significativa entre as duas áreas. A entrada vertical, também representada principalmente por folhas secas, ocorreu somente na área com mata de galeria. O transporte por drift não foi significativamente diferente entre as áreas, e a entrada foi composta principalmente de matéria orgânica particulada grossa. O efeito negativo da remoção da mata nativa foi bastante evidente pela baixa contribuição de folhas na área sem mata.Palavras-chave: aporte anual, detritos, riacho brasileiro, vegetação ripária.

show abstract

“…However, this was too difficult in the present experiments because the particles were small and the stream channel too complex to locate all the particles without disturbing or dislodging other particles, or disturbing the stream before subsequent releases. Therefore, I modeled retention based on the negative exponential decay equation using the number of released particles and the number of collected particles at the end of the measured stretch of stream, which is commonly done (Diez et al, 2000;Erman and Lamberti, 1992;Speaker et al, 1984). The negative exponential model is P d = P 0 e −kd , where P d is the number of chips caught in the screen, P 0 the number of chips released, −k the slope or instantaneous retention rate, and d the length of the experimental stream reach (5 m).…”

Section: Study Area and Methodsmentioning

confidence: 99%

“…Large woody debris increases surface area that physically traps particulate matter (Diez et al, 2000), and is a major retention structure in smaller-order streams (Allan, 1995). Non-woody vegetation may be equally important.…”

Section: Introductionmentioning

confidence: 99%

Retention of particulate matter by macrophytes in a first-order stream

Horvath

2004

Aquatic Botany

View full text Add to dashboard Cite

Effect of removal of wood on streambed stability and retention of organic matter

Cited by 76 publications

References 30 publications

Storage and export of organic matter in a headwater stream: responses to long‐term detrital manipulations

Storage and export of organic matter in a headwater stream: responses to long‐term detrital manipulations

Input of litter in deforested and forested areas of a tropical headstream

Retention of particulate matter by macrophytes in a first-order stream

Contact Info

Product

Resources

About