Publications by authors named "KAISER H"

[Not Available].

Oecologia

September 1974

Sexually mature male specimens of Onychogomphus forcipatus perch on stones along the shoreline of rivulets waiting for mates. They react aggressively towards conspecific males. From time to time they fly around, mostly fighting other males.

View Article and Find Full Text PDF

Mature males of the dragonflyAeschna cyanea visit a pond several times a day for mating. The individuals arrive in a random manner, but the density of the males at the pond varies little. The males at the pond are described as a system which has the property of regulating male density, by a feedback mechanism involving interaction of 2 behavioural parameters: the number of fights between the males increases with their density and a male's visit is shorter when there are more fights (Fig.

View Article and Find Full Text PDF

A method for solving for the largest eigenvalue and associated eigenvector of the eigenequation (A - XB)s = 0 is presented. The method is contrasted with other procedures for the same problem.

View Article and Find Full Text PDF