7884079432
Hydrobiologia (2005) 546:1-8 © Springer 2005
A. Herzig, R.D. Gulati. C.D. Jersabek & L. May (eds.) Rotifera X: Rolifer Research: Trends, New Tools and Recent Advances DOI 10.1007/s 10750-005-4092-7
Walter Koste - a K-strategist? A laudatio
Norbert Walz
Leibniz Inslituie of Freshwater Ecology and Inland Fisheries, Mueggelseedamm 301, D-12555 Berlin, Germany E-mail: walz@igb-berlin.de
Key words: Rotifers, taxonomy, publications, long life
Abstract
Walter Koste is one of the architects of modern rotiferology. Here I take a look at his scientific career using ecological concepts. Although he has morę than 150 publications to his credit, he did not start publishing his works on rotifers before the age of 49, and then most of his publications appeared after his retirement. Long life and late reproduction are characteristics for K-strategists. Thus, it appears that Koste has followed K-strategy for his contributions to rotiferology.
Introduction
On July 19th, 2003 Walter Koste celebrated his 91th birthday (Fig. 1). At the Xth Rotifer Sym-posium in Illmitz in 2003 this laudatio was pre-sented in his honour. For additional information on this remarkable scientist the reader is reąuested to consult Ruth Laxhuber’s review of his curriculum vitae (Laxhuber, 1993) and Jurgen Schwoer-befs tribute presented on the occasion of his 75th birthday (Schwoerbel, 1987).
Although in retrospect Koste’s contributions have been outstanding, the way to his success was hard and difficult. While he was interested in biology, especially in aspects of biodiversity sińce his school days, circumstances prevented him from attending university. This did not deter Koste’s innate interest to become skilled at about rotifers. After World War II he became a teacher and a headmaster of a one-class country school in a village in North-Western Germany. After additional training in education at the college level he received a certificate to teach at the secondary school level for biology and geography. Later he moved to Quakenbruck, a smali town in Lower Saxony, where until his retirement he was headmaster of the Artland Secondary School. He still resides in this smali town.
Even though he did not start to publish his works until he became 49 years Koste has morę than 150 publications to his credit, that is the envy of many a university professor. Moreover, a good deal of this work was accomplished during his leisure time, i.e., after his school duties. On his retirement from teaching he continued to publish thereby establishing himself as one of the grand dons of rotiferology. Long life and long and late reproduction of qualitatively good offspring are the life history characteristics termed K-strategy (MacArthur & Wilson, 1967). K-strategists are morę competitive and use their energy morę effi-ciently. In contrast, r-strategists have rather high reproduction rates early in their life, compensating higher mortality of offspring. Based on these cri-teria I pose the ąuestion: is Walter Koste a r- or K-strategist?
Results
Koste’s publication career began in 1961 and continued in a modest way with a total of four papers by the mid 1960s. At that point his efforts picked up momentum, so much so that by the end of 1970 he had already ąuadrupled the pace of his output of his early years. Koste continued to be
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