Are marine iguanas endanged on islands with introduced predators?
In: Noticias de Galápagos, Jg. 53, S. 13-151994

The complete primary structure of the marine carnivora, galapagoes fur seal (Arctocephalus galapagoensis, Otariidae) hemoglobins
In: Journal of Protein Chemistry, Jg. 10 H. 3, S. 257-2631991
Conservation problems on Galápagos: the showcase of evolution in danger
In: Die Naturwissenschaften, Jg. 79 H. 1, S. 1-61992


El Nino: effects of environmental stress on pinniped populations
In: Stress - auf allen Ebenen, Jg. 6, S. 103 ff.1992
Energetic limits to brood care: influences on fertility, and longterm fitness consequences
In: Verhandlungen der Deutschen Zoologischen Gesellschaft, Jg. 84, S. 79-871991
Female aggression and male peace-keeping in a cichlid fish harem: conflict between and within the sexes in Lamprologus ocellatus
In: Behavioral Ecology and Sociobiology, Jg. 34 H. 2, S. 105-1121994
Foraging strategies of the Galapagos Marine Iguana (Amblyrhynchus Cristatus): adapting behavioral rules to ontogenetic size change
In: Behaviour, Jg. 128 H. 3, S. 255-2791994


Ontogenetic changes in food intake and digestion rate of the herbivorous marine iguana (Amblyrhynchus cristatus, Bell)
In: Oecologia, Jg. 94 H. 3, S. 373-3791993

