Decomposition of emergent macrophyte roots and rhizomes in a northern prairie marsh

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	Decomposition of emergent macrophyte roots and rhizomes in a northern prairie marsh
	Dale A. Wrubleskia ; Henry R. Murkina ; Arnold G. van der Valkb and Jeffrey W. Nelson
发表期刊	Aquatic Botany
ISSN	0304-3770
	1997
卷号	58 期号:2 页码:121-134
关键词	Typha
通讯作者	Dale A. Wrubleski
英文摘要	Dry mass, nitrogen and phosphorus content in belowground litter of four emergent macrophytes (Typha glauca Godr., Phragmites australis (Cav.) Trin., Scolochloa festucacea (Willd.) Link and Scirpus lacustris L.) were followed for 1.2 years in a series of experimental marshes, Delta Marsh, Manitoba. Litter bags containing roots and rhizome materials of each species were buried in unflooded soil, or soil flooded at three water depths (1–30, 31–60, > 60 cm). There were few differences in dry mass loss in unflooded or flooded soils, and depth of flooding also had little effect on decomposition rates. In the flooded sites, Scolochloa and Phragmites roots lost more mass (48.9–63.8% and 59.2–85.5%, respectively) after 112 days than Typha and Scirpus (36.3–43.6 and 37.0–47.2%, respectively). These differences continued through to the end of the study, except in the shallow sites where Scirpus roots lost more mass and had comparable mass remaining as Scolochloa and Phragmites. In the unflooded sites, there was little difference between species. All litters lost nitrogen (22.9–90.0%) and phosphorus (46.3–92.7%) during the first 112 days, then levels tended to remain constant. Decay rates for our belowground root and rhizome litters were comparable to published literature values for aboveground shoot litter of the same species, except for Phragmites roots and rhizomes which decomposed at a faster rate (−k = 0.0014−0.0032) than shoots (−k = 0.0003−0.0007, [van der Valk, A.G., Rhymer, J.M., Murkin, H.R., 1991. Flooding and the decomposition of litter of four emergent plant species in a prairie wetland. Wetlands 11, 1–16]).
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/3045
专题	科研共享资源
推荐引用方式 GB/T 7714	Dale A. Wrubleskia,Henry R. Murkina,Arnold G. van der Valkb and Jeffrey W. Nelson. Decomposition of emergent macrophyte roots and rhizomes in a northern prairie marsh[J]. Aquatic Botany,1997,58(2):121-134.
APA	Dale A. Wrubleskia,Henry R. Murkina,&Arnold G. van der Valkb and Jeffrey W. Nelson.(1997).Decomposition of emergent macrophyte roots and rhizomes in a northern prairie marsh.Aquatic Botany,58(2),121-134.
MLA	Dale A. Wrubleskia,et al."Decomposition of emergent macrophyte roots and rhizomes in a northern prairie marsh".Aquatic Botany 58.2(1997):121-134.

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