Aboveground net primary production along a bog-fen-marsh gradient in southern boreal Alberta, Canada

摘要: Abstract:Total aboveground plant production in a bog, three rich fens and two marshes were determined via the multiple harvest cranked wire techniques. These peatlands follow gradient of increasing pH, water flow, surface nutrient concentrations from bog to eutrophic marshes. The net primary (NPP) values as follows: (i) 390 g m-2 year-1, (ii) (riverine sedge fen, lacustrine floating fen), 409 277 year-1 356 respectively, (iii) one riverine marsh, 323 757 respectively. Overall, had similar NPP but they significantly less productive than Along this bog-fen-marsh gradient, moss shrub decreased herb increased. Herb exhibited greater variation between years among sites within each year. Shrub remained ...