Questions for Kaufman (1992) (1) What has been the fate of the native fish biodiversity of Lake Victoria? What factors are responsible for this? (2) Some have blamed Nile Perch has been blamed for this loss. How might its takeover of fish biomass be a symptom rather than the cause of negative factors impacting the lake? (3) How has the loss of native fish greatly altered nutrient flows? How has this fed back into the aquatic ecosystem? Questions for Carlton & Geller (1993) (4) What is ballast water? Where does it come from? Why can it be an important vector for exotic species establishment? How might it differ from other types of exotic species movement? (5) How can the impact of ballast water dumping on local marine faunas be mitigated? Questions for Bland & Temple (1993) (6) Why have Himalayan Snowcocks been barely able to establish exotic populations in the Ruby Mountains? (7) What is your opinion of Game Introduction programs? Has anything good come from them? Questions for Nuzzo (1993) (8) When did Alliaria petiolata first appear in North America? (9) How long did it take for it to become a serious invasive pest? What is responsible for the time lag? (10) What has been its pattern of spread? Questions for Vitousek (1988) (11) How much have exotic species impacted the biomes of oceanic islands? (12) Why is island biodiversity especially vulnerable to exotic species invasions? (13) What can be done to reduce their establishment? Questions for Scheffer (1993) (14) Should the Mountain Goat be considered ‘exotic’ to Olympia National Park? (15) What has been the impact of release of this species on the alpine biome? (16) How should we balance the competing ethical demands of humane treatment of animals vs. biodiversity protection?