Autecology and synecology
Autecology is the ecology of a single species, its relations to its natural conditions like soil and climate. The science of the relations within the population of one species is called population ecology (mainly in Russian it is known as demoecology).
Synecology on the other hand is the ecology of different species living in the same habitat, their relations with one another.
An example: Pines can live in humid and dry places. Their autecological range is wide. But usually there are more competitive trees. Therefore the synecological range of the pines is confined to places where the other trees cannot grow or are less competitive.
French: autécologie / synécologie