. Bonner zoologische Monographien. Zoology. 58 concept derived from the common geological history (see above) and the supposed young separation of their present habitats in the Chilean Altiplano, own suggestions of an approximates age of separation of less than 15 000 years (Villwock et al. 1987; based on 14C-aging reported by Geyh, Niedersächsisches Landesamt für Bodenforschung, March 1986: 11 730±100 ys). This was meanwhile confirmed by geological investigations, Francis & Self (1987): 15 000 to 17 000 ys, Harmon et al. (1987): < 15 000 ys, Wörner et al. (1988): 13 500
. Bonner zoologische Monographien. Zoology. 58 concept derived from the common geological history (see above) and the supposed young separation of their present habitats in the Chilean Altiplano, own suggestions of an approximates age of separation of less than 15 000 years (Villwock et al. 1987; based on 14C-aging reported by Geyh, Niedersächsisches Landesamt für Bodenforschung, March 1986: 11 730±100 ys). This was meanwhile confirmed by geological investigations, Francis & Self (1987): 15 000 to 17 000 ys, Harmon et al. (1987): < 15 000 ys, Wörner et al. (1988): 13 500 ys and others. Additional results concerning the age of Chilean Altiplano lakes and their fauna were published by Villwock & Sienknecht (1993, 1995, 1996) and by Schwalb et al. (1999). The results of the comparison of the four species descriptions given by Arratia, Parenti and Vila & Pinto (see above), with observations from our own investigations (including the thesis data by Thomann 1990), are presented in the following : The distribution of Chilean Orestias (Draft Sienknecht, PC-drawing Stiewe) A - Lago Titicaca; B - Lago Poopo; C - Salar de Surire; D - Salar de Coipasa; E - Salar de Uyuni; F - Salar d'Ascotän 1 - Lago Chungarä (LC); 2 - Laguna de Parinacota (LP); 3 - Rio Lauca (RL); 4 - Rio Isluga (RI); 5 - Rio Collacagua (RC); 6 - Salar de Huasco (SH); 7 - Salar d'Ascotän (SA). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
