By Griffin Page
Naturalist ~ Eco-guide

Mexico ranks among the top 5 most bio diverse countries in the world. Many reasons explain this fact. First of all, because of its latitude, it sits right at the joining of 2 major climatic areas: The Neo-arctic zone and the Neo-tropical zone. Where 2 climatic zones meet, you will always have greater biodiversity. Mexico is surrounded mostly by oceans: Atlantic and Pacific and so, has a multitude of varying coastal environments. It is also blessed with many high mountain ranges which in themselves, again, offer different climatic possibilities as well as arroyos, rivers and lakes. Mexico is also right in the path of many migratory species. It has a complex geological history and an enormous variety of biological conditions.

Biodiversity can be measured 3 different ways:
~ variety of ecosystems: This is the calculation of how many different communities exist in a determined region and includes habitats, species and the ecological processes that occur.
~ variety of species: This method calculates the number of different species or richness of species encountered in an area and takes into consideration its endemic species. *When it is said that a species is endemic, it means it is found only there and nowhere else in the world.
~ genetic variety: This applies directly to the variations in hereditary genes
encountered within the specific individuals of all species and their particular evolution.

10% of all the species of birds either live in or migrate to Mexico.
10% of superior plants are found in Mexico and 40% of those are actually endemic.
33% of all species of marine mammals also either reside in or migrate to Mexican waters.
Mexico ranks # 4 in amphibians and # 1 or close second in reptiles after Australia.
*2 different sources quote different ranks concerning reptiles.

Something puzzling and yet wonderful is right in our back yard. Pine and conifer forests are encountered at altitudes varying between 1200 and 3600 meters above sea level with between 600 and 1200 mm of rain annually. South of Puerto Vallarta, around El Tuito, we can witness an incredible occurrence. Innumerable quantities of pines and oaks cover our mountains at altitudes of about 300 meters! That is way below the normal range. Ecologists don’t completely understand why.

The sub-tropical, semi-deciduous forest, or as we call it jungle, located in the south part of our bay used to be found all along the south coast of Mexico from about Cancun all the way to here. Now, it has been destroyed in all of Mexico but here. It is a unique type of ecosystem.

Of course, aquatic environments go hand in hand with terrestrial environments and are equally if not more important. We are all familiar with “el Estero del Salado”. Mangroves are a particularly important type of ecosystem. It is high on the list of biodiversity and is essential to many species both terrestrial and aquatic. The American Crocodile, long term resident of our Boca Negra area, is in great danger of becoming extinct here. There are only approximately 150 of them in all the bay but most importantly, there are only about 4 females sexually mature enough to produce new generations. Thankfully, The Coastal University, otherwise known as the CUC is dedicated to their protection and investigation. We are lucky to have such an authority on reptiles working for them: Biologist Fabio Cupul and his team, which most avid readers of the Tribune are familiar with.

But all of this doesn’t happen so easily. Mexico has to deal first and foremost with complex social, political, cultural and economical factors. Being on the inside, I see a lot of efforts being directed towards conservation but I also see what is not being done, more often than not, for lack of funds. Believe it or not, Mexico has some of the best laws in the world regarding the conservation and protection of its natural resources. What Mexico doesn’t have just yet, is the sufficient funding required to enforce those already established laws.

Rome wasn’t built overnight. And yes, there are some rather urgent issues everywhere in the world. Do what you can, give it your best shot and hope for the best. Criticism only gets people’s feathers ruffled and brings you no closer to solving the issues. Don’t get me wrong, I can sometimes be one frustrated camper but I see it moving forward, I meet many wonderful young biology students who do the impossible and give all their energy to a cause. I applaud them and truth be told, they deserve a standing ovation! I look forward to seeing what this new generation will accomplish.