2013 chart

Each fall the monarch butterfly travels thousands of miles to spend the winter in the forests on 12 mountaintops in central Mexico. The monarch migration is the most spectacular two-way migration carried out by an insect.

The forests provide unique microclimatic conditions that allow monarchs to survive the winter. Forest degradation is putting this amazing migration in peril.

Click on the graph on the right to enlarge and on this link to read how the numbers were obtained. 



MBF is meeting the challenge of preserving monarch butterflies and their spectacular migration through our conservation strategy that fosters healthy ecosystems and sustainable communities through PartnershipsForest ConservationScientific Research and MonitoringEducation and Outreach, and Sustainable Development.

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Video by Dr. Pablo Jaramillo - more videos

In the Spotlight

Dr. Cuauhtémoc Saénz Romero and his students completed the first part of their research on the altitudinal genetic differentiation among Abies religiosa natural populations for seed and seedling transfer for reforestation considering climatic change.

Branches and cones of A.religiosa along an altitudinal transect (2,850- 3,550 m, a population every 50 m of altitudinal difference) were collected and analyzed. The results indicate a significant differentiation among populations along the altitudinal gradient: low-altitude populations have shorter needles and longer cones than high-altitude populations. Therefore it is suggested to delineate three provisional altitudinal zones with the following limits: 2,800 to 3,050 m, 3,050-3,300 m and 3,300-3,550 m. Ignoring climate change, it is suggested to reforest each altitudinal zone using seedlings originated from the same seed zone. Considering climate change, it is suggested to conduct an altitudinal assisted migration, by planting sites in the zone immediately above the area where the seed is collected. To read the scientific paper click here.


Evaluation of seedling height and stem diameter. On the left 16-month-old seedling collected at 3250 m of altitude (intermediate-high altitude). On the right, 15-month-old seedling collected at 3550 m of altitude (highest altitude).

Thursday, January 15, 2015 - 2:22pm