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Flora Endemism on Gypsum Outcrops of the Sierra Madre Oriental of Southern Nuevo Leon, Mexico.

Flora Endemism on Gypsum Outcrops of the Sierra Madre Oriental of Southern Nuevo Leon, Mexico. Margarita Barba, Miguel A. González, A. Eduardo Estrada, George S. Hinton & José A. Villarreal. Geo. B Hinton Herbarium. Faculty of Forestry Sciences, CFNL Herbarium

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Flora Endemism on Gypsum Outcrops of the Sierra Madre Oriental of Southern Nuevo Leon, Mexico.

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  1. Flora Endemism on Gypsum Outcrops of the Sierra Madre Oriental of Southern Nuevo Leon, Mexico. Margarita Barba, Miguel A. González, A. Eduardo Estrada, George S. Hinton & José A. Villarreal Geo. B HintonHerbarium Faculty of Forestry Sciences, CFNL Herbarium Autonomous University of Nuevo León maggie_bellot@yahoo.com.mx

  2. Introduction 283 vascular endemic genera in Mexico 12% of the estimated total of 2,410 in world

  3. 60% of endemism in arid and semi-arid area

  4. In Sierra Madre Oriental (SMO), occurs hundreds of endemic species. Northeastern México

  5. Gypsum outcrops = High endemism

  6. I’m charismatic, People protect My home

  7. Yummy, endangered herbs and succulents

  8. Are the gypsic ecosystems the richest endemic species in Nuevo Leon?

  9. Refined it Orthophoto Web Service Coarse delimitation with Landsat Images.

  10. Frequency distributions of elevation, slope, aspect, topoform, temperature, rainfall, climate, vegetation and NDVI. The major part of the gypsum occurs on dry ecosystems

  11. In the arid-warm climates is wherethe most part of gypsum occurs Mainly the gypsum is located in areas where temperature averages between 18-20° C

  12. Around the half has a “Complex Sierra with Hills” landform, Mostly the gypsum ocurrs in places where the slope is between 0-30°

  13. The most part of the gypsum outcrops is southern facing, and also to west. A 62% is located between 1700 and 2200 m

  14. More than the half of gypsum area is dominated by Pinus arizonica woods 91% of the gypsum, show a NDVI below 0.15

  15. We checked GBH, TEX and CFNL herbaria And others in process

  16. Number of endemic species for state Growing on gypsum Restricted to gypsum

  17. We plan to finish the fieldwork next month

  18. We have visited 31 sites and collected 850 specimens. The Hinton’s made 1,622 collections on gypsum. Propose Natural Protected Areas on gypsum

  19. Inclusion on: Mexican Law CITES IUCN using at least 4 criteria: • Overall distribution • Current status of the habitat • Biological intrinsic vulnerability • Human impact to habitat

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