Agricultural biodiversity and conservation 
Aquatic (marine and freshwater) biodiversity
Biodiversity for nutrition and food security
Biodiversity for tourism
Biodiversity of parasites and their hosts
Biogeography
Biomonitoring 
Conservation biology, policy and strategies
Diversity of animal species, systematics and phylogeny
Diversity of plant species, systematics and phylogeny
Ecosystem approach
Effects of biodiversity to human health
Environmental education
Environmental stress on biodiversity
Environmental toxicology
Forest biodiversity 
Global climate change effects on biodiversity
Habitat fragmentation and destruction
Human effects on biodiversity
Invasive species    
Legal regulations for protecting biodiversity
Microbial biodiversity (Micology, virology)
Pollution effects on biodiversity
Population ecology
Protected areas
Medicinal plants