2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2021 | 2:00 PM - 3:30 PM | INFLUENCE OF LAND USE INTENSITY ON THE SUBSTRATE AND WOOD IN STREAMS: IMPLICATIONS TO RESTORATION IN THE ATLANTIC RAINFOREST | Virtual Platform
INFLUENCE OF LAND USE INTENSITY ON THE SUBSTRATE AND WOOD IN STREAMS: IMPLICATIONS TO RESTORATION IN THE ATLANTIC RAINFOREST
Land use change and intensification are among the main threats to tropical headwater streams. However, information about the impacts on the stream physical habitat is still poorly documented in the tropics. To address this knowledge gap, we investigated how substrate and wood responded to a gradient of land use intensity (agriculture with low and high percentage of riparian forest, young and old Eucalyptus plantations and native forests (reference)) in 18 streams in the Atlantic Rainforest, Brazil. Small sized substrate (fine gravel, sand and silt) predominated in streams with high land use intensity, whereas streams in native forests had larger substrate size (cobbles and boulders). Streams in young Eucalyptus plantation presented the largest amount of leaves. Large wood responded negatively to the increase in land use intensity. Although Eucalyptus leaves have a low decomposition rate, they can be used as refuge for fauna, as well as woods, cobbles and boulders, having positive effects instreams. The gradual reduction of forest fragmentation and increase in the extent of native forests (not just riparian forests), improved the physical habitat of streams and can have positive effects on the restoration of aquatic ecosystems.
- Tropical
- Land use
- Restoration
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Presenters/Authors
Gláucia Regina Santos
(), University of São Paulo “Luiz de Queiroz” College of Agriculture (ESALQ/USP), glauciaflorestal@usp.br;
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Cecilia Leal
(), University of São Paulo “Luiz de Queiroz” College of Agriculture (ESALQ/USP), c.gontijoleal@gmail.com;
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Felipe Rossetti de Paula
(), University of São Paulo “Luiz de Queiroz” College of Agriculture (ESALQ/USP), ferossetti@gmail.com ;
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Silvio Ferraz
(), University of São Paulo, USP/ESALQ, Dept of Forest Sciences, Brazil, silvio.ferraz@usp.br;
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