LEAF LITTER DECOMPOSITION IN 3 LOUISIANA FRESH-WATER FORESTED WETLAND AREAS WITH DIFFERENT FLOODING REGIMES

被引：29

作者：

CONNER, WH

DAY, JW

机构：

[1] Baruch Forest Science Institute, Georgetown, 29442, SC

[2] Coastal Ecology Institute and Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, 70803-7503, LA

来源：

WETLANDS | 1991年 / 11卷 / 02期

关键词：

WETLANDS; HYDROLOGY; SEDIMENTATION; BURIAL; NUTRIENTS;

D O I：

10.1007/BF03160855

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Litter decomposition was studied for one year in three Louisiana forested wetland sites with different flooding regimes. Decomposition was significantly higher in a crayfish pond where flooding was manipulated by pumping. Only 20% of the original dry mass remained after 46 weeks versus over 40% in the natural and impounded wetland forests. Nitrogen was immobilized in the natural and impounded areas but was mineralized during the spring and summer in the managed area. Phosphorus was not immobilized in the natural and impounded areas like nitrogen but was mineralized much more slowly in these areas than it was in the managed area. Because of the slower decomposition in the natural and impounded areas, falling leaf litter buries the old, partially decomposed material. Thus, there tends to be a net accumulation of organic matter, nitrogen, and phosphorus in stagnant, more flooded areas and mineralization and/or export from free-flowing areas.

引用

页码：303 / 312

页数：10

共 30 条

[21] Paille R.F., Production of three populations of red swamp crayfish, Procambarus clarkii, in southeast Louisiana, (1980)
[22] Post H.A., de la Cruz A.A., Litterfall, litter decomposition, and flux of particulate organic material in a coastal plain stream, Hydrobiologia, 55, pp. 201-207, (1977)
[23] Reddy K.R., Patrick W.H., Effect of alternate aerobic and anaerobic conditions on redox potential, organic matter decomposition and nitrogen loss in a flooded soil, Soil Biology and Biochemistry, 7, pp. 87-94, (1975)
[24] Reice S.R., The role of animal associations and current velocities in sediment specific leaf litter decomposition, Oikos, 29, pp. 357-365, (1977)
[25] Schlesinger W.H., Carbon balance in terrestrial detritus, Annual Review of Ecology and Systematics, 8, pp. 51-81, (1977)
[26] Short R.A., Canton S.P., Ward J.V., Detrital processing and associated macroinvertebrates in a Colorado mountain stream, Ecology, 61, pp. 727-732, (1980)
[27] Shure D.J., Gottschalk M.R., Parsons K.A., Litter decomposition processes in a floodplain forest, American Midland Naturalist, 115, pp. 314-327, (1986)
[28] Sklar F.H., Water budget, benthological characterization, and simulation of aquatic material flows in a Louisiana freshwater swamp, (1983)
[29] Triska F.J., Sedell J.R., Decomposition of four species of leaf litter in response to nitrate manipulation, Ecology, 57, pp. 783-792, (1976)
[30] Yates F.K., Decay rates and nutrient dynamics in confined and unconfined leaf litter in the Great Dismal Swamp, (1981)

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