Stich, H. B.; Lampert, W.: Predator evasion as an explanation of diurnal vertical migration by zooplankton. Nature 293 (5831), pp. 396 - 398 (1981)

Adis, J.: Adaptions of arthorpods to amazonian infundation-forests. In: Ecology and resource management in the tropics, 1, pp. 1 - 2. Silver Jubilee Symposium of Tropical Ecology, Bhopal, India, October 05, 1981 - October 10, 1981. International Society for Tropical Ecology (1981)

Furch, K.: Seasonal variation of water chemistry of the middle amazon Varzea-Lake Lago Calado. In: Ecology and resource management in the tropics, 63, pp. 70 - 72. Silver Jubilee Symposium of Tropical Ecology, Bhopal, India, October 05, 1981 - October 10, 1981. International Society for Tropical Ecology, Botany Dept. Banaras Hindu University, India (1981)

Herrera, R.; Medina, E.; Klinge, H.; Jordan, C. F.; Uhl, C.: Nutrient retention mechanisms in tropical forests: The Amazon Caatinga, San Carlos pilot project, Venezuela. Ecology in Practice - Establishing a Scientific Basis for Land Management, Paris, September 22, 1981 - September 29, 1981. Natural resources and the environment series, pp. 85 - 97 (1981)

Sioli, H.: Biological implications of development in Amazonia. In: Ecology and resource management in the tropics, pp. 24 - 28. Silver Jubilee Symposium of Tropical Ecology, Bhopal, India, October 05, 1981 - October 10, 1981. International Society for Tropical Ecology (1981)