Related by context. Frequent words. (Click for all words.) 74 chytrid fungus 64 amphibian species 62 amphibian populations 62 fungus 59 frog species 59 species 59 protozoan 59 adelgid 58 Plasmodium 58 Didymo 58 varroa mite 57 P. falciparum 57 Wolbachia 57 species extinctions 56 parasitic worm 56 Phytophthora 56 fungal disease 56 herpes viruses 55 pathogen 55 subtropical regions 55 fungal pathogens 55 avian species 55 Argentine ants 55 alga 54 bee populations 54 amphibians 54 symbionts 54 parasitic worms 54 insect borne diseases 53 fungal spores 53 microorganism 53 parasite 53 genetic alteration 53 insect populations 53 Leishmania 53 Chlamydia trachomatis 53 fungi 53 speciation 53 Toxoplasma 53 megafauna 53 mycobacteria 53 diatom 53 malaria parasites 53 malaria parasite 53 petrels 53 vertebrate species 53 retrovirus 52 Candida albicans 52 temperate zones 52 Vibrio 52 Aedes aegypti 52 temperate regions 52 parasitic diseases 52 Colony Collapse Disorder 52 monk seal 52 varroa 52 Tularemia 52 Ocean acidification 52 simian immunodeficiency virus 52 mutant strain 52 bacterial strains 51 dieback 51 latent infection 51 Plasmodium falciparum 51 parasitic disease 51 bird species 51 ant species 51 adelgids 51 Nipah virus 51 whitefly 51 arthropod 51 mountain pine beetles 51 Aspergillus 51 larval stage 51 infestation 51 Fujian strain 51 Sudden Oak 51 H#N# subtype 51 whirling disease 51 fungal 50 hemlock woolly adelgid 50 terrestrial ecosystems 50 beetle 50 didymo 50 skink 50 diatoms 50 Cyanobacteria 50 pollinating insects 50 bacterial 50 organism 50 invasive species 50 Pseudomonas 50 avian influenza viruses 50 soybean aphid 50 strep bacteria 50 H. pylori 50 rhinoviruses 50 parasitic infection 50 coral bleaching 50 bacterium 50 frogs