Effects of litter on substrate conditions and growth of emergent macrophytes

TY - JOUR

T1 - Effects of litter on substrate conditions and growth of emergent macrophytes

AU - Van der Putten, W.H.

AU - Peters, B.A.M.

AU - Van den Berg, R.S.

N1 - Reporting year: 1997 Metis note: 2205; CTE; TME ; TE file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1997/VanderPutten_ea_2205.pdf

PY - 1997

Y1 - 1997

N2 - Three successive emergent macrophytes (Typha latifolia L., Phragmites australis (Cav.) Steudel and Glyceria maxima (Hartman) Holmbly) were each grown in substrates collected from three different zones of shoreline vegetation development (non- vegetated sediment, the interface between T. latifolia and P. australis, and degenerating P. australis). The aim of the study was to assess whether accumulation of litter changes growth conditions of P. australis, and to determine its effects on pre- and post successional plant species. The study was carried out by means of pot experiments in a glasshouse. Seedlings of the three species were cultured in fertilized and unfertilized substrates under both waterlogged and drained conditions. In its own litter, growth of P. australis was strongly reduced, compared with the productivity of plants in substrates from preceeding successional stages, and could not be compensated for by fertilization or soil drainage. The redox potential of the substrate was not strongly reduced and the sediment density was well above the critical level. Soil sterilization by gamma- irradiation did not improve growth substantially, although there was some positive effect in unfertilized substrate. Phytotoxic compounds might have caused poor growth of P. australis in its own litter. T. latifolia and G. maxima were relatively less affected by the P. australis litter. The possible importance of litter accumulation on species replacement in shoreline vegetation is discussed. It is concluded that the accumulation of organic matter should be considered as a factor affecting spatio-temporal processes in littoral vegetation owing to its specific impact on the functioning of individual dominant plant species. [KEYWORDS: littoral vegetation; succession; phytotoxins; Phragmites australis; anaerobe decomposition Spartina-alterniflora; soil; marsh; vegetation; sediment; plants; roots; reed; decomposition; netherlands]

AB - Three successive emergent macrophytes (Typha latifolia L., Phragmites australis (Cav.) Steudel and Glyceria maxima (Hartman) Holmbly) were each grown in substrates collected from three different zones of shoreline vegetation development (non- vegetated sediment, the interface between T. latifolia and P. australis, and degenerating P. australis). The aim of the study was to assess whether accumulation of litter changes growth conditions of P. australis, and to determine its effects on pre- and post successional plant species. The study was carried out by means of pot experiments in a glasshouse. Seedlings of the three species were cultured in fertilized and unfertilized substrates under both waterlogged and drained conditions. In its own litter, growth of P. australis was strongly reduced, compared with the productivity of plants in substrates from preceeding successional stages, and could not be compensated for by fertilization or soil drainage. The redox potential of the substrate was not strongly reduced and the sediment density was well above the critical level. Soil sterilization by gamma- irradiation did not improve growth substantially, although there was some positive effect in unfertilized substrate. Phytotoxic compounds might have caused poor growth of P. australis in its own litter. T. latifolia and G. maxima were relatively less affected by the P. australis litter. The possible importance of litter accumulation on species replacement in shoreline vegetation is discussed. It is concluded that the accumulation of organic matter should be considered as a factor affecting spatio-temporal processes in littoral vegetation owing to its specific impact on the functioning of individual dominant plant species. [KEYWORDS: littoral vegetation; succession; phytotoxins; Phragmites australis; anaerobe decomposition Spartina-alterniflora; soil; marsh; vegetation; sediment; plants; roots; reed; decomposition; netherlands]

U2 - 10.1046/j.1469-8137.1997.00678.x

DO - 10.1046/j.1469-8137.1997.00678.x

M3 - Article

SN - 0028-646X

VL - 135

SP - 527

EP - 537

JO - New Phytologist

JF - New Phytologist

IS - 3

ER -