Assessment of economic sustainability of the strip clear-cutting system in the Peruvian Amazon

Rondon, Xanic J.; Gorchov, David L.; Elliott, S.

doi:10.1016/j.forpol.2010.02.004

Cited by 13 publications

(18 citation statements)

References 39 publications

(70 reference statements)

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“…For strip 2, we used a twoway ANOVA with two fixed factors, thinning and felling treatment (clear-cut versus deferment-cut), and their interaction. All analysis were done using SAS version 9.1, with a = 0.05; ANOVA tables are reported in Rondon (2008). Statistical findings should be interpreted with caution since the 15 9 15 m plots within each strip were not independent.…”

Section: Discussionmentioning

confidence: 99%

“…Mean annual temperature is 26.5°C and mean annual precipitation is 2521 mm (Spichiger et al 1989). A relatively dry period occurs from June to August, but rainfall highly varies each month of the year Rondon 2008). Soils are sandy-loam and the vegetation is considered lowland tropical rainforest on high terrace (Spichiger et al 1989).…”

Section: Study Sitementioning

confidence: 99%

“…8), and mature forest levels (233 stems/ha in Peters et al (1989)), and lower than in a 50 year-old communal forest near Iquitos (125.5/ha for trees [25 cm dbh in Pinedo-Vasquez et al 1990). This low stocking of large commercial stems in this system negatively affects the economic value projected for a potential second harvest after 25 years (Rondon 2008).…”

Section: Composition Recoverymentioning

confidence: 99%

“…Relative abundance, stocking, and growth of commercial species will determine whether the second harvest (which is in the next 15-25 years) will be financially profitable. In order to fully assess the economic viability of this system, we have also investigated whether those few large commercial trees in the strips would reach marketable size in the next 25 years, in time for a second cutting (Rondon 2008).…”

Section: Deferment-cutmentioning

confidence: 99%

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Tree species richness and composition 15 years after strip clear-cutting in the Peruvian Amazon

Rondon

Gorchov

Cornejo³

2008

Plant Ecol

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Although strip clear-cutting has a long history of use in the temperate zone, it was only recently introduced for timber extraction in tropical rain forests, where it is known as the Palcazú Forest Management System. In this system heterogeneous tropical forests are managed for native gap-dependent timber species by simulating gap dynamics through clear-cutting long, narrow strips every 40 years. As part of an assessment of the sustainability of this system, we evaluated the recovery of tree basal area, species richness, and composition after 15 years of regeneration on two strips (30 9 150 m) clear-cut in 1989 in Jenaro Herrera, Peru. Timber stocking and the effects of silvicultural thinning were assessed in both strips. The strips recovered 58-73% of their original basal area and 45-68% of their original tree species richness. Although both strips recovered more than 50% of their original composition, commercial species had lower basal areas and lower densities than in the forest before the clearing. Pioneer species with high basal areas remained dominant 15 years after the cutting. Silvicultural thinning in 1996 reduced the abundance of pioneer species in both strips, and increased the abundance of commercial species in one of the strips. Half of one strip was harvested by deferment-cut (only commercial trees [30 cm dbh and ''other'' species [5 cm dbh were cut); regeneration here had greater abundance of commercial species and lower abundance of pioneer species. The low stocking of commercial trees challenges the sustainability claims for this forest management system.

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Section: Discussionmentioning

confidence: 99%

Section: Study Sitementioning

confidence: 99%

Section: Composition Recoverymentioning

confidence: 99%

Section: Deferment-cutmentioning

confidence: 99%

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Tree species richness and composition 15 years after strip clear-cutting in the Peruvian Amazon

Rondon

Gorchov

Cornejo³

2008

Plant Ecol

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“…We calculated average annual set-up, implementation, and monitoring costs and their sum as transaction costs in US$ per hectare over the 20-year period. When calculating the net present value (NPV) of transaction costs, we used the discount rates of 3.8% (Central Bank of Peru's annualized interest rate for December 2010), 5%, and 10% to maintain comparability with similar studies (Pinedo-Vasquez et al 1992, Ferraro 2002, van Kooten et al 2004, Nepstad et al 2007, Potvin et al 2008, Viana et al 2009) and following recommendations in the literature for South American countries (Howard et al 1996, Rondon et al 2010. To facilitate comparisons between projects, we calculated costs on a per hectare basis.…”

Section: Methodsmentioning

confidence: 99%

Reducing Emissions from Deforestation and Forest Degradation (REDD+): Transaction Costs of Six Peruvian Projects

Thompson¹,

Paavola²,

Healey³

et al. 2013

E&S

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ABSTRACT. Reduced Emissions from Deforestation and Forest Degradation (REDD+) has received strong support as a major component of future global climate change policy. The financial mechanism of REDD+ is payment for the ecosystem service of carbon sequestration in tropical forests that is expected to create incentives for conservation of forest cover and condition. However, the costs of achieving emissions reduction by these means remain largely unknown. We assess the set-up, implementation, and monitoring costs, i.e., collectively the transaction costs, of six of the first seven REDD+ project designs from the Peruvian Amazon and compare them with established projects in Brazil and Bolivia. The estimated costs vary greatly among the assessed projects from US$0.16 to 1.44 ha-1 yr-1, with an average of US$0.73 ha-1 yr-1, though they are comparable to earlier published estimates. The results indicate that the costs of implementing REDD+ are highly uncertain for participating developing countries because of issues such as inadequate project design and how additionality is determined. Furthermore, some insight is obtained into how different activities to reduce deforestation and forest degradation, the type of implementer, and project location affect implementation costs of REDD+ projects. Even with these first estimates, the cost of preserving existing intact forests in the Peruvian Amazon may have been underestimated.

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Edge effects in recruitment of trees, and relationship to seed dispersal patterns, in cleared strips in the Peruvian Amazon

Gorchov

Rondon

Cornejo

et al. 2012

Ecological Research

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We investigated the spatial pattern of tree recruitment 15 years after clear‐cutting in two logged strips in the Peruvian Amazon, focusing on differences between seed dispersal modes and cohorts, and relating these to spatial patterns of seed dispersal in the years immediately following clearing. Most trees that recruited in logged strips belonged to taxa dispersed by birds or nonvolant mammals, with smaller numbers dispersed by bats or wind. Seed dispersal patterns differed, with few mammal‐dispersed seeds reaching strips, bird‐dispersed seeds more abundant near the forest edge than strip centers, and bat‐ and wind‐dispersed seeds more evenly distributed. However, this pattern was not reflected in the tree recruits, except in the deferment cut half of strip 2. Different dispersal modes were differentially represented in different cohorts; for example, in strip 1 bird‐dispersed trees predominated in early cohorts, while trees dispersed by nonvolant mammals predominated in later cohorts. Our finding that trees dispersed by mammals (which disperse the majority of commercial trees in Amazonia) successfully regenerate from seed in the interior of logged strips highlights the value of maintaining these animals in forest management systems.

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Assessment of economic sustainability of the strip clear-cutting system in the Peruvian Amazon

Cited by 13 publications

References 39 publications

Tree species richness and composition 15 years after strip clear-cutting in the Peruvian Amazon

Tree species richness and composition 15 years after strip clear-cutting in the Peruvian Amazon

Reducing Emissions from Deforestation and Forest Degradation (REDD+): Transaction Costs of Six Peruvian Projects

Edge effects in recruitment of trees, and relationship to seed dispersal patterns, in cleared strips in the Peruvian Amazon

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