Seizing resilience windows to foster passive recovery in the forest-water interface in Amazonian lands.

Autor: de Paula FR; Department of Forest Sciences, 'Luiz de Queiroz' College of Agriculture, University of São Paulo, Av. Pádua Dias, 11, CP 9, Piracicaba, SP 13418-900, Brazil; Department of Forest & Conservation Sciences, University of British Columbia, 3041-2424 Main Mall, Vancouver, BC V6T1Z4, Canada; Embrapa Amazônia Oriental, Brazilian Agricultural Research Corporation, Trav. Doutor Enéas Pinheiro, s/n, CP 48, Belém, PA 66095-100, Brazil. Electronic address: ferossetti@gmail.com., Ruschel AR; Embrapa Amazônia Oriental, Brazilian Agricultural Research Corporation, Trav. Doutor Enéas Pinheiro, s/n, CP 48, Belém, PA 66095-100, Brazil. Electronic address: ademir.ruschel@embrapa.br., Felizzola JF; Embrapa Amazônia Oriental, Brazilian Agricultural Research Corporation, Trav. Doutor Enéas Pinheiro, s/n, CP 48, Belém, PA 66095-100, Brazil. Electronic address: juliana.felizzola@embrapa.br., Frauendorf TC; Department of Biology, University of Victoria, PO Box 3020, Station CSC, Victoria, BC V8W3N5, Canada; Department of Ecology and Evolutionary Biology, Yale University, 165 Prospect Street, New Haven, CT 06511, United States. Electronic address: therese.frauendorf@yale.edu., de Barros Ferraz SF; Department of Forest Sciences, 'Luiz de Queiroz' College of Agriculture, University of São Paulo, Av. Pádua Dias, 11, CP 9, Piracicaba, SP 13418-900, Brazil. Electronic address: silvio.ferraz@usp.br., Richardson JS; Department of Forest & Conservation Sciences, University of British Columbia, 3041-2424 Main Mall, Vancouver, BC V6T1Z4, Canada. Electronic address: john.richardson@ubc.ca.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Jul 01; Vol. 828, pp. 154425. Date of Electronic Publication: 2022 Mar 08.
DOI: 10.1016/j.scitotenv.2022.154425
Abstrakt: Forest regeneration has increased in many tropical abandoned lands and current restoration commitments in this region aim to restore over 1,400,000 km 2 of degraded land by 2030. Although regenerating forests recover biomass, biodiversity, and processes with time, the recovery trajectories may be uncertain due to past disturbances. Currently, there is a lack of knowledge to sustain the effectiveness of passive regeneration for the recovery of riparian forests and the adjacent waterbodies in the tropics, which may compromise the outcomes of ongoing and future tropical riparian restoration programs. We evaluated the drivers of riparian forest structural recovery and how this relates to stream conditions in 12 abandoned pasturelands in eastern Brazilian Amazonia. These pasturelands range across regeneration age (pasture (PA) - 0 to 4 years; young regeneration (YR) - 8 to 12 years; old regeneration (OR) - 18 to 22 years) and years of past land-use (PA - 23.25 average years of past land-use, YR - 18.25, OR - 7). We compared the conditions of these sites to 4 reference sites with conserved forests (REF, >100 years), where there was no recorded pasture use in the past. Short-term responses of forests and streams to passive regeneration indicated high ecosystem resilience after low to intermediate past land-use intensity, reflected in the improvement of stream ecosystems. Such high resilience is possibly attributable to low- to intermediate-intensity pasture-related disturbances, remaining forest matrix, and residual structures (e.g. roots, sprouts, and in-stream wood) observed in the area. Our results suggest a recovery by 12 to 20 years for riparian forests of this region. However, areas degraded by intensive land-use apparently showed delayed recovery. We conclude that seizing resilience windows (defined here as the period when ecosystems retain high potential resilience) is essential to foster passive recovery of riparian forests and streams more cost-effectively in the tropics.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: