Uso de las Cactceas del Estado de Nuevo Len

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Distribution Patterns of Cacti in Nuevo Leon,
Mexico

• Miguel Angel Gonzalez Botello

Centro de Investigaciones Científicas y de
Estudios Superiores de Ensenada
(CICESE) UNIVERSIDAD AUTÓNOMA DE NUEVO
LEÓN mbotello_at_cicese.mx mgonzalezii_at_hotmail.com
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INTRODUCTION
100 genera1,500 speciesRestricted to America.
Echinocereus poselgeri
IUCN Red ListNOM-SEMARNAT-059-2001Endangered
Species ActCITES Checklist.
Astrophytum asterias
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More than the half of genera and one third of
species occurs in Mexico.
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73 and 78 endemism rate.
Aztekium ritteri
Geohintonia mexicana
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Endangered by habitat destruction and
over-collecting
Photo George S. Hinton
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STUDY AREA
NUEVO LEON
GULF OF CALIFORNIA
GULF OF MEXICO
OCEAN PACIFIC
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CLIMATE
ANUAL RAINFALL
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PHYSIOGRAPHIC PROVINCES AND SUBPROVINCES
GEOLOGIC ORIGIN
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ALTITUDE (masl)
SOIL TYPES (FAO)
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ECOREGIONS
VEGETATION TYPES
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Collecting
Direct observation
Database queries
Bibliographic references
650 specimens
NUM/SGPA/DGVS 8084
Herborize
Identify
Herbarium inclusion
Duplicates preparation
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Collecting
Direct observation
Database queries
Bibliographic references
600 specimens
NUM/SGPA/DGVS 8084
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Astrophytum capricorne
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USE OF SATELLITE IMAGES
Landsat MosaicsTM 14-20 and Tm-12-25Global Land
Cover FacilityGeoCover-ORTHO Earthsat
1990MrSID FormatSpatial resolution 28.5 mUTM
ProjectionComposite 7,4,2 (R,G,B)
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GEOGRAPHIC AND ECOLOGICAL AMPLITUDE INDEX
In this study a new index was created in order to
assess the habitat specialization.It has built
with 9 variables8 Ecologic 30
squares(Geographic Operative Unit)
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(GEAI )
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INDEX CALCULATION
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RESULTS
Thelocactus rinconensis ssp. rinoconensis
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170 taxa recorded forNuevo Leon State
33 genera, 134 species and66 infra-specific taxa
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Genera
Taxa
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Coryphantha
Echinocereus
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Opuntia
Mammillaria
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Thelocactus
Turbinicarpus
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GEAI
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Km2 x 1000
Correlation index between GEAI and potential
geographic extent is 0.8
GEAI
Potential Extent
The correlation for only the Turbinicarpus genus
is 0.902
GEAI
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Similarity between squares
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Conservation
22 genera have at least one taxon under
conservation status.
IUCN
Ariocarpus scaphirostris
63 of 170 taxa (37), are protected by Mexican
law or international conventions
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Priority areas
Number of taxa with GEAI below average per
quadrat
Priority
High Med Low
Restricted Taxa
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Endangered species overlap
We overlap the potential distribution of 63
protected species (NOM, CITES I and IUCN).
10 9 8 7 6 5 4 3 2 1
We suggest to decree new Natural protected areas
in the yelow-red area
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10 9 8 7 6 5 4 3 2 1
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Conclusions
Nuevo León is the 2nd state with more cactus
species in México 170 (63 endangered)
Sierra Madre Oriental Rayones ValleyAramberri
ValleyHuasteca CanyonCasa Blanca Canyon.
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The GEAI can be used on decision making, for
conservation and legislation purposes.
The area needs to be divided in geographic
operative units (like squares, hexagons, etc.)
Geohintonia mexicana
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Now we have the potential distribution maps for
170 species, and necessary information to help
conservation efforts in the state.
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Thanks to
ConservationProgram
2007 Global Scholarship Program