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Please use this identifier to cite or link to this item: http://www.lsln.net.au/jspui/handle/1/13468
Type: journalArticle
Title: Riparian vegetation and stream condition in a tropical agriculture-secondary forest mosaic
Authors: Heartsill-Scalley, T.
Aide, T. M.
Year: 2003
Citation: Volume: 13
Issue: 1
Abstract: Changes in land cover from forest to agriculture often alter riparian vegetation, which modifies the physical conditions of streams. To understand the impacts of different categories of land cover on riparian and stream habitats, we sampled riparian vegetation and stream conditions in three adjacent watersheds in southeastern Puerto Rico. Land cover categories (pasture, mixed, and forest) were determined using aerial photographs. Vegetation structure and composition and characteristics of streams were assessed for 35 riparian sites. Sites were located along first-order streams, at 400–600 m elevation in the wet-forest life zone. Understory vegetation in the forest sites was mainly shrubs, herbs, and ferns, whereas the mixed and pasture sites were dominated by grasses, vines, and bare soil. Syzygium jambos and Spathodea campanulata, nonnatives, and Guarea guidonia, a native, were the most common tree species in the riparian areas. Surrounding land cover explained >60% of the variation among stream sites. There was a positive relationship between tree cover and percentage of dissolved oxygen, and a negative relationship between tree cover and percentage of substrata covered by sediments from eroded soil. The amount of woody debris in the streams tended to increase with forest cover. Overall, land cover is a landscape feature that effectively characterized riparian understory cover, tree species composition, and stream condition.
Zotero ID: 7CA3CAGD
URL: http://www.esajournals.org/doi/abs/10.1890/1051-0761%282003%29013%5B0225:RVASCI%5D2.0.CO%3B2
URL: http://www.lsln.net.au/jspui/handle/1/13468
ISSN: 1051-0761
DOI: 10.1890/1051-0761(2003)013[0225:RVASCI]2.0.CO;2
Journal Title: Ecological Applications
Geo Location: none
Appears in Collections:Hunter Local Land Services

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