What does Law of limiting factors have to do with altitude and latitude?
For any given latitude and calendar day, altitude is inversely proportional to the average daily high and low temperatures. For any given altitude, latitude is proportional to the seasonal difference of daily average temperatures. These affect growing seasons for plants and thus food supply for herbivores and thus food supply for carnivores. Furthermore there are effects of weather/climate on altitude/latitude changes that affect plants in other ways than growing seasons. An example would be the evergreen pines which thrive cold areas where other plants do not grow but are affected by the snow-line. In northern Georgia, USA, (Longitude 84W, Latitude 34N, Altitude 1060ft), one good snowfall can load down the lower branches of the pines and break them off. This means fewer leaves to produce food for the plants thus hindering their growth. In Mandeville, Jamaica, (Longitude 77.5W, Latitude 18N, Altitude 2150ft), Lack of snow means no excessive loads on lower branches which produce more fo