The Tropical barrier separates the Tamaulipan and Veracruzian biotic provinces.
The three barriers separate the four biotic Provinces in Tamaulipas.
In our literature survey we found records of biotic associations for about 400 species.
The major part of this biotic area lies within the Lower Sonoran Life-zone.
The secret of this life force, or biotic energy, according to Professor Moore, is in the keeping of matter itself.
These birds are widely distributed and vary geographically without corresponding to the biotic Provinces.
Each of these has varying combinations of physical and biotic factors that are important in the ecology of amphibians.
biotic relations of the wood rat (Neotoma fuscipes) in the Berkeley Hills.
In classifying the biotic associates of cockroaches, we were immediately confronted with a problem in semantics.
The Californian biotic Province dominates the biotic aspect of the coastal slope of the range.
biotic bi·ot·ic (bī-ŏt'ĭk)
Relating to life or living organisms.
Produced or caused by living organisms.