Harvesting_Big Leaf Mahogany_Brazil

Affiliation
IIED
Type of wild species covered by the record
Wild species used in its natural habitat
Stage of the value chain covered by the record
Unknown/not recorded
Record Source
Scientific publication (e.g., journal articles and book chapters independently peer-reviewed)

Big-leaf mahogany Swietenia macrophylla population dynamics and implications for sustainable management

Unknown/not recorded
Is the species endemic HIDE
No
Population Status
Unknown/not recorded
Formal international protection in place
International Level
National Level
Unknown/not recorded
Threats/Pressures impacting the conservation of the species
Population Trend
Unknown/not recorded
Sub-national Level
Unknown/not recorded
Additional Details (if available)

This species is the most commercially important of the mahoganies. The level of exploitation has led to the exhaustion of supplies particularly in the northern parts of its range. Regeneration of the species is stochastic, depending in nature on large-scale disturbance. This ecological strategy makes mahogany vulnerable to logging regimes. Harvesting and processing are generally only 50 percent efficient. There is, at present, little economic incentive to manage natural stands sustainably.

Name
Emma Hemmerlé
Scientific Name
Swietenia macrophylla
Common Name(s)
Big Leaf Mahogany
Type of Use
Extractive (i.e., the entire organism or parts of the organism are removed from its environment)
If extractive, for the target species, is this use
Lethal
Does this use involve take/extraction of
The whole entire organism
How is the primary use carried out?
Are specific characteristics/traits being targeted?
Unknown/not recorded
Purpose of Use
Largescale commercial exploitation for trade
What is the main end use for any living organisms, parts or products taken/extracted?
What is the trend in the level of offtake within the period covered by this record?
Geographic Location
Country
Brazil
Sub region/state
Para
Name
Marajoara
Site Description

The study site is a 4100-ha forest industry-owned management area called Marajoara, located at 7°50′S, 50°16′W in the southeast corner of the state of Para

Unknown/not recorded
Is the use part of a strategy to generate conservation incentives, to finance conservation, or to improve tolerance/stewardship?
Unknown/not recorded
Is there evidence that the use is affecting the conservation status of the species? HIDE
Unknown/not recorded
Is there evidence that the use is affecting natural selection?
Unknown/not recorded
Is there evidence that the use is affecting poaching of illegal wildlife trade?
Unknown/not reported
Is there any evidence that this use of the species is having a knock-on effect on the status of non-target species
Unknown/not recorded
Unknown/not recorded
Details of assessment carried out

These results indicate that current harvest regulations in Brazil for mahogany and other high-value timber species with similar life histories will lead to commercial depletion after 2–3 cutting cycles. . Current legal harvest prac- tices for these species are likewise unsustainable and must be revised to account for species biology

Has a valuation of financial flows from this use at the site/national/international level been recorded
No
Contribution to GDP
Unknown/not recorded
Medicine/healthcare
Training/Skills
Land/Resource Rights
Decision Making
Social Cohesion
Conflict- people
Conflict- wildlife
Climate Change
Has the use of the species been recorded as resulting in changes to human health in this record?
Unknown/not recorded
Has the species in use been noted as being of particular disease risk to humans?
Unknown/not recorded
Has the use of the species resulted in changes to animal welfare in this record?
Unknown/not recorded
Are there particular practices which have increased the risk to human or animal health or welfare in the use of this species?
Unknown/not recorded
Does the use of this species increase susceptibility to pathogen spread?
Unknown/not recorded
Unknown/not recorded
Biological characteristics of target species
Absent
Source Reference(s)

Grogan, J., Landis, R.M., Free, C.M., Schulze, M.D., Lentini, M. and Ashton, M.S. (2014), Big-leaf mahogany Swietenia macrophylla population dynamics and implications for sustainable management. J Appl Ecol, 51: 664-674. https://doi.org/10.1111/1365-2664.12210

Who is involved in the use?
Is there any gender/age specificity in the various roles
Unknown/not recorded
How many of these local jobs accure to the following categories?
How many people outside the local area are employed
Is there any evidence of other economic benefits associated with this use beyond direct income and jobs
Unknown/Not recorded
Scale of Assessment
IUCN National Red List Category
IUCN Global Red List Category
Green Status Global Category
Yearly Financial Flows
No assessment recorded
Yes, considered unsustainable
Country reference