A. Species

Scientific name: Swietenia macrophylla,

Common name(s): Mahogany

Global IUCN Red List Threat Status:

B. Location of use

Geographic location(s):

• Amazonas

Country/Region:

C. Scale of assessment

Scale of assessment: Sub-national / Sub-region / Sub-State

Name/Details of location: Brazilian Amazon

D. Timescale of use

Start Year: 2006

End Year: 2013

E. Information about the use

How is the wild species sourced?: Wild species sourced from its natural habitat

Type of use: Extractive

Practice of use: Logging and/or Wood Harvesting

Lethal or non-lethal: Lethal

Does this use involve take/extraction of: The whole entire organism

Purpose(s) of end use: Decorative and aesthetic and Materials and construction

Motivation of use: Basic subsistence, Income generation from trade (individual/household/community) and Largescale commercial exploitation for trade

Is this use legal or illegal?: Legal under national law

F. Information about the Users

Which stakeholder(s) does the record primarily focus on?: Local people, National / local government, National / local private sector and International private sector

G. Information about the sustainability of use

Is there evidence that the use is having an impact on the target species?: Wild species sourced from its natural habitat

Has an assessment (or judgement) of sustainability of the use of the target species from an ecological perspective been recorded?: Yes, considered unsustainable

Has an assessment (or judgement) of sustainability of the use of the target species from an economic perspective been recorded?: not recorded

Has an assessment (or judgement) of sustainability of the use of the target species from a social perspective been recorded?: not recorded

Has an assessment (or judgement) of sustainability of the use of the target species from a human health perspective been recorded?: not recorded

Has an assessment (or judgement) of sustainability of the use of the target species from an animal health/welfare perspective been recorded?: not recorded

Recommendations provided in the record to maintain or enhance the sustainability of the use of the target species

*change of existing legislation; *In the Post-harvesting Phase (Phase II), the impacts of harvesting, resulted in a decrease in the average distance of plantules dispersal to 61 m; conversely, there was an increase in the distance of seedlings occurrence to 123 m. This fact demonstrates that mahogany has great ability for seed dispersal, covering large areas with natural regeneration. Seedlings were less affected by anthropic actions. * The management of mahogany in the Western region of the Brazilian Amazon in the State of Acre (AC), Brazil, should be associated with enrichment planting in treefall gaps, along the roads and logging trails, preferably using fertilizers and frequent control of bamboo vegetation, as well as the control of the mahogany shoot borer attack Hypsipyla grandella, Zeller. This will require, however, economic evaluation of its feasibility. * Based on the current legislation that regulates forest management plans with occurrence of mahogany (Instruction No. 07 of 22/08/2003 - IBAMA/MMA), it was initially planned to harvest 45 (41.0%) mahogany trees with minimum DBH felling limit of 60 cm, out of 110 trees inventoried. However, only 30 (27.3%) were effectively harvested, resulting in a volume of 538.212 m³, with an average 17 m³ per tree. It is unlike that the same volume will be harvested, in a second cutting cycle, in keeping the current regulations in effect in Brazil. The average volume of secondary species was approximately 8 m³ per tree, from a relatively small number of species of commercial value. The same situation is unlikely to be found in the second cutting cycle. Thus, we point out that in keeping the current legislation, the management of forests with occurrence of mahogany would not feasible from the silvicultural point of view. Silviculture of mahogany forests in Brazil, should consider, in addition to natural regeneration, controlling bamboo and introducing enrichment planting in gaps and other open sites. Otherwise, the economic future of wood production of mahogany in the Brazilian Amazon will only be feasible in reforestation areas and or in agroforestry systems. *to ensure the species conservation it is crucial the application of silvicultural treatments in managed forests and other silvicultural alternatives such as reforestation and agroforestry systems * Management of mahogany forests in Brazil should comply with two regulations: Instruction N˚ 05, IBAMA/MMA), that regulates management of non-mahogany forests and Instruction N˚ 07, IBAMA/MMA, which sets out the rules for minimum cutting diameter of 60 cm, the preservation of 20% of commercial trees, and maintenance of 5 trees per UT1 (Work Unit - area of approximately 100 ha), and other legal restrictions common to all species, which is the logging prohibition in permanent preservation areas (APP). * Thus, in order to ensure the implementation of silvicultural activities during the management cycle, the two forest management regulations for tropical rain forests in the Brazilian Amazon (Instruction nº 05 and Instruction nº 7) should be revised and merged in order to assure economic viability of forest management, without jeopardizing species conservation.

Record source

Information about the record source: formal_data_stats

Date of publication/issue/production: 2013-01-01T00:00:00+0000

Source Reference(s):

Date of record entry: 2023-09-25