Bio 2F03 – Lecture 3 – Tuesday September 10 , 2013
Why horses and cattle help restore Guanacaste forest of Costa Rica?
-important tree in the dry tropical forest and it provides major woody type of vegetation,
shade and food but has been declining until the introduction of horses and cattle
-seeds of the tree too big to be eaten by rodents but can be eaten by horses and
-seeds pass through horse and cattle and results in a little seedling which is nicely
embedded in the poo
Why were these seeds HUGE even before horses and cattle?
-camels were big enough to eat seed and disperse them but disappeared several
thousand years ago due to human settlers and climatic change
What is the most obvious foundation of life on land?
-soil and climate
-soil allows veg