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Isabel Van den Wyngaert - Grazing of extensive reed beds by moulting Greylag geese : effects on nutrient dynamics and growth of the Phragmites australis vegetation and consequences for the lake ecosystem
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| Schrijver: | Isabel Van den Wyngaert |
| Titel: | Grazing of extensive reed beds by moulting Greylag geese : effects on nutrient dynamics and growth of the Phragmites australis vegetation and consequences for the lake ecosystem |
| ISBN: | |
| Uitgever: | [S.l. : s.n.], 2001. |
| Bijzonderheid: | 2001, Als nieuw, 190 p. : ill. ; . Met lit. opg. - Met samenvatting in het Nederlands. |
| Prijs: |
€ 45,00
€ 4,60
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| Meer info | In this study, the effects were quantified of grazing by moulting Greylag geese in spring on biomass and nutrient dynamics of monospecific stands of Phragmites australis. A comparison was made between a marsh which had been grazed for more than 15 years, and a site which had not been grazed for at least that period. Both marshes bordered the same lake. Net above-ground primary production (NAPP) and N and P allocation to above-ground parts were estimated for two growing seasons from regular measurements of the standing shoot biomass and its N and P content, and by using temporary exclosures during goose grazing. Annual NAPP was similar between grazed and ungrazed areas (1997) or higher in the grazed area (1999). Rhizome biomass was similar between areas but the timing of minimum biomass shifted from June to September with grazing. A higher spring shoot emergence due to lower standing dead mass in the grazed area and relocation of reserves from rhizomes to shoots were important in sustai |
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