Growth and root oxygen release by Typha latifolia and its effects on sediment methanogenesis

Jespersen, Dorthe N; Sorrell, Brian K.; Brix, Hans

doi:10.1016/s0304-3770(98)00071-0

Cited by 116 publications

(54 citation statements)

References 31 publications

(44 reference statements)

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“…Collectively, these data suggest that Peltandra was a weak source of both electron donor and acceptor compounds to the soil compared to the other species. This observation and the fact that CH 4 production was not correlated to plant production within any of the four species (only across species) suggests there are species-specific exceptions to the widely-held view that CH 4 emissions (and by implication CH 4 production) increase with plant production (Whiting and Chanton,1993;Jespersen et al,1998;Updegraff et al, 2001;Vann and Megonigal, 2003;Kankaala et al, 2005).…”

Section: Discussionmentioning

confidence: 91%

Plant species traits regulate methane production in freshwater wetland soils

Sutton‐Grier

Megonigal

2011

Soil Biology and Biochemistry

128

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Section: Discussionmentioning

confidence: 91%

Plant species traits regulate methane production in freshwater wetland soils

Sutton‐Grier

Megonigal

2011

Soil Biology and Biochemistry

128

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“…Many studies have investigated oxygen transport from aquatic plants into wetlands (e.g. MOORHEAD and REDDY, 1988, JACKSON and ARMSTRONG 1999, JESPERSEN et al, 1998. CALLAWAY and KING (1996) found Typha raised soil oxygen in wetlands by 2-4 mg l -1 at 11-12°C, compared to the near anoxic conditions without it.…”

Section: Discussionmentioning

confidence: 99%

White-Clawed Crayfish in Muddy Habitats: Monitoring the Population in the River Ivel, Bedfordshire, Uk

Peay¹,

Proud²,

Ward³

2006

Bull. Fr. Pêche Piscic.

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White-clawed crayfish Austropotamobius pallipes are usually associated with stony substrates, tree roots, or refuges in submerged banks. The River Ivel has the last known population of white-clawed crayfish in Bedfordshire. Prior to 2005, much of the bed comprised uniform silt, plus leaf-litter. Stands of reedmace Typha latifolia and other emergent vegetation were localised in less shaded areas. Initial survey results suggested a population at low abundance. A low-cost monitoring strategy was started in 2001 and continued three times a year to 2005, using engineering bricks, which offer artificial refuges. Crayfish are counted when bricks are lifted periodically. De-silting of c. 430 m river was carried out in February 2005, to improve habitat and to maintain the flood capacity in the channel upstream of a mill weir. Additional bricks were deployed a few weeks in advance of de-silting, then bricks and crayfish were lifted prior to dredging and were returned the next day. Starting upstream, soft, wet mud was dredged out, placed on the bank and searched manually for crayfish. Banks, tree roots and shallow margins were left undisturbed. In all, 4,142 crayfish were found in dredgings from a 430 m length of the mid channel. Crayfish were strongly associated with emergent vegetation, but many were present below the surface of the silt. Crayfish released in the dredged channel immediately burrowed into the silt retained on the channel margins. Monitoring after dredging showed no change in abundance in the main area with in-bank refuges and lots of bricks, but there was an increase in occupancy of bricks in an area where most crayfish had been in emergent vegetation.Key-words: white-clawed crayfish, habitat, mud, mitigation, monitoring. Les écrevisses étaient fortement associées à la végétation émergente, mais beaucoup étaient présentes aussi sous la surface du limon. Les écrevisses relâchées dans le cours d'eau dragué se sont aussitôt ré-enfouies dans le limon déposé sur les bords du cours d'eau. Le suivi réalisé après le dragage n'a pas mis en évidence de modification d'abondance dans le secteur principal avec les refuges en berge et beaucoup de briques, mais il a en revanche permis de constater une augmentation de l'occupation des briques dans un secteur où la plupart des écrevisses étaient précédemment dans la végétation émergente. ÉCREVISSES À PATTES BLANCHES DANS LES HABITATS

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“…The water supply from the constant head tanks entered the drainage layer of the buckets, and although the redox potentials were not significantly higher in the vegetated inundated sediments, the rates of methanogenesis were significantly lower there compared to the unvegetated sediment. The high oxygen demand of the sediments could mask the effect of oxidants from supply of water and root oxygen release, so that a significant reduction in methanogenesis rates could be observed without any significant increase in measured redox potentials (Jespersen et al, 1998).…”

Section: Discussionmentioning

confidence: 99%