Harvesting_Holywood Lignum Vitae_Mexico

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
“Grey” literature (e.g., NGO reports, case studies, non-detriment studies; project documents etc. (not necessarily peer-reviewed))

NDF Workshop Case Studies WG 1 – Trees: Non-detriment Findings Report On Guaiacum Sanctum In Mexico

Decreasing
Is the species endemic HIDE
No
Population Status
Common and wildly distributed
Formal international protection in place
International Level
National Level
Formal national protection in place

G. sanctum has been considered a threatened species in Mexico since 1994 (NOM-059-SEMARNAT-2001), specifically in the “Species under special protection” category.

Threats/Pressures impacting the conservation of the species
Additional Details (if available)

The main threats for Guaiacum sanctum in Mexico are HABITAT LOSS/DEGRADATION OF HABITAT provoked by human activities, espe- cially the conversion from forest to agriculture-pasture lands and human settlements. OVERHARVESTING of Guaiacum sanctum has reduced its abundan- ce in some areas, but currently does not represent a threatening factor. Local use of the species is present in some communities, but at very low levels and we do not consider this a threat for the long-term per- sistence of the species

Population Trend
Unknown/not recorded
Sub-national Level
Unknown/not recorded
Additional Details (if available)

In Central America and Florida remaining populations are threatened with habitat loss or exploitation, e.g., in Guancaste in Costa Rica, El Salvador, Florida Keys. As with G. officinale, both the timber and medicinal resin are of commercial use and have been traded for several centuries. Tropical semi-deciduous and dry forests, which represent the main habitats of Guaiacum sanctum are among the most threatened ecosystems in the Americas and globally (Miles et al. 2006). Habitat loss of G. sanctum is mainly due to deforestation associated with increasing human populations, conversion of forest to human-managed areas, and increasing fragmentation of the remaining forest area (López‐Toledo et al. 2011, Miles et al. 2006). For Mexico, analyses of the geographic distribution suggested that their habitat is highly fragmented. It is likely that small, isolated populations close to the margins of the species’ distributions are likely to be particularly vulnerable to the negative demographic and genetic effects of forest fragmentation. Although, it still exists an international trade, this has diminished noticeably. At the moment, Mexico is the only exporter of Guaiacum sanctum timber and it is only logged at Campeche state in the Yucatan Peninsula at two localities. These two forest communities fulfill with CITES requirements. The species is used locally for timber but at low levels and this is not a long term threat to the species (López-Toledo et al. 2008). The illegal trade of this species is also rare, with only a small amount being confiscated from Yucatan in 2008. Hence, logging and over harvesting is currently considered a low threat to the species.

Name
Emma Hemmerlé
Scientific Name
Guaiacum sanctum
Common Name(s)
Holywood Lignum Vitae
guayacan
palo santo
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
Only parts or products of the organism (e.g., feathers, leaves, branches, eggs, nuts)
Details of parts/products taken

Generally, only the main log of a given tree (4-5 m) is extracted, leaving the rest of the stem and branches in the forest as these are not useful to the timber industry.

How is the primary use carried out?
Are specific characteristics/traits being targeted?
Unknown/not recorded
Purpose of Use
Largescale commercial exploitation for trade
Additional Details (if available)

G. sanctum has historically been heavily exploited for its medicinal properties, especially for the treatment of syphilis and arthritis; It was also used as a laxative, anti-inflammatory, diuretic, and diaphoretic. Currently the more important trade is for timber products. The high density and resin content of the wood confer auto-lubricating properties that make it suitable for the ship-building industry

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?
Provide Details of resource rights regime where relevant

In general, illegal logging for commercial pur- poses is rare, but its effects cannot be discounted. For example, in September 2008 a small amount of G. sanctum timber was confiscated in a small community of Yucatan, near Merida (Dzitia), because of lack of authorization for harvesting.
Although there are no estimates of the extent of illegal logging for inter- national trade, it is likely to be very low or non-existent given the reduction of G. sanctum’s use

Geographic Location
Country
Mexico
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
Yes – use is improving the status (e.g., population is increasing or stabilising, extraction effort OR catch per unit effort is decreasing or stable)
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

This study found that logging reduced stem den- sity and residual tree basal area at a local scale, but our study suggests that harvesting of G. sanctum had only minor short-term effects on the dynamics and regeneration of the tree community. Guaiacum sanctum seedling abundance and rates of growth, mortality and recruitment were sensitive to the effects of harvesting, but the demo- graphic attributes of adults were unaffected by logging.

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
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
Present
Source Reference(s)

López-Toledo, L., Burslem, D., Martínez-Ramos, M., García-Naranjo, A. (n.d.) NDF Workshop Case Studies WG 1 – Trees: Non-detriment Findings Report On Guaiacum Sanctum In Mexico

Threats/pressures impacting the species at the scale of this record
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
No assessment has been recorded
Country reference