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|Title:||Edge effects on litterfall mass and nutrient concentrations in forest fragments in central Amazonia|
|Authors:||Sizer, Nigel C.|
Tanner, Edmund Vincent John
Ferraz, Isolde Dorothea Kossmann
|metadata.dc.publisher.journal:||Journal of Tropical Ecology|
|metadata.dc.relation.ispartof:||Volume 16, Número 6, Pags. 853-863|
|Abstract:||Forest edges bordering on pasture were created by cutting and burning the surrounding Amazonian lowland rain Forest in the dry season (June) of 1990. Litterfall was measured For 3.5 y along transects 10, 50, 100 and 250-m into the forest from the Forest edge. Litterfall along the 10-m transects increased by up to 2.5 times that on spatial controls (250-m transects) in the dry season in which the edge was created. In the second dry season after edge creation litterfall at 10-m was lower than on controls, after which it returned to control rates in the second wet season, 1.5 y after edge creation. Litterfall 50-m into the forest was less affected; there was a smaller rise in the dry season in which the edge was cut, and no significant effects after that. At 100-m there was no effect of edge creation on litterfall. Phosphorus concentrations in litterfall were elevated along 10-m transects, 10-12 wk after edge creation, possibly because of reduced retranslocation prior to abscission. The changes in litterfall described here are inextricably linked to the biomass collapse, which occurs near forest-fragment edges in the same area.|
|Appears in Collections:||Artigos|
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