Empirical evidence for a complex diurnal movement in Hexarthra bulgarica from an oligotrophic high mountain lake (La Caldera, Spain)

  • P. Carillo
  • L. Cruz-Pizarro
  • R. Morales-Baquero
Conference paper
Part of the Developments in Hydrobiology book series (DIHY, volume 52)


A detailed 24 hour sampling program has been carried out at 26 depths of 6 stations located along the two main transects of lake La Caldera. The resultant data has allowed us to define for H. bulgarica a general daily trend of movement which couples a typical nocturnal vertical migration with an ‘horizontal’ one that is particularly conspicuous at dawn and dusk when the population seemed to moved toward or away from the shore, respectively.

These results confirm our previous data and suggest that light is responsible for these complex movements.

Key words

Hexarthra bulgarica diurnal vertical movement horizontal distribution 


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  1. Cruz-Pizarro, L., 1978. Comparative vertical zonation and diurnal migration among Crustacea and Rotifera in the small high mountain lake La Caldera (Granada, Spain). Verh. int. Ver. Limnol. 20: 1026–1032.Google Scholar
  2. Cruz-Pizarro, L., 1981. Estudio de la comunidad zoo-planctónica de un lago de alta montaña (La Caldera, Sierra Nevada, Granada). Ph. D. Thesis. Univ. Granada. 186 pp.Google Scholar
  3. George, D. G. & R. W. Edwards, 1976. The effect of wind on the distribution of chlorophyll a and crustacean plankton in a shallow eutrophic reservoir. J. appl. Ecol. 13:667–690.CrossRefGoogle Scholar
  4. Martinez, R., 1975. First report on the limnology of the alpine lake La Caldera, in the Penibetic Mountains (Sierra Nevada, Granada, Spain). Verh. int. Ver. Limnol. 19: 1133–1139.Google Scholar
  5. Martinez, R., 1977. Phytoplankton species, biomass and diversity in lake La Caldera (Sierra Nevada, Granada, Spain). Acta hydrobiol. 19: 95–107.Google Scholar
  6. Martinez, R., 1980. Seasonal variations of phytoplankton biomass and photosynthesis in the high mountain lake La Caldera (Sierra Nevada, Spain). Development in Hydrobiology 3: 111–119.Google Scholar
  7. Morales-Baquero, R., 1985. Estudio de las comunidades de Rotiferos Monogonontes de las lagunas de alta montaña de Sierra Nevada. Ph. D. Thesis. Univ. Granada. 296 pp.Google Scholar
  8. Morales-Baquero, R., 1988. Body size variability of Euchlanis dilatata Ehrenberg in high mountain lakes of Sierra Nevada (Spain). Arch. Hydrobiol. 112: 597–609.Google Scholar
  9. Preissler, K., 1977a. Do Rotifers show ‘Avoidance of the shore’? Oecologia (Berl.). 27: 253–260.Google Scholar
  10. Preissler, K., 1977b. Horizontal distribution and ‘avoidance of shore’ by rotifers. Arch. Hydrobiol. Beih. 8: 43–46.Google Scholar
  11. Ringelberg, J., 1980. Introductory remarks: causal and teleological aspect of diurnal vertical migration. In W. C. Kerfoot (ed.), Evolution and Ecology of zooplankton Communities. The University Press of New England, Hanover (N.H.); Lond.: 65–68.Google Scholar
  12. Sanchez-Castillo, P., L. Cruz-Pizarro & P. Cardilo, 1989. Caracterización del fitoplancton de las lagunas de alta montana de Sierra Nevada (Granada, España) en relación con las características fisico-químicas del medio. Limnetica 5: 37–50.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • P. Carillo
    • 1
  • L. Cruz-Pizarro
    • 1
  • R. Morales-Baquero
    • 1
  1. 1.Dpto. Biología Animal Ecología y Genética. Fac. CienciasUniversidad de GranadaGranadaSpain

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