Determinants of Daphnia clonal diversity in lakes
Populations of Daphnia show high clonal diversity in large lakes. Hypothetically, this diversity may be maintained by either intrinsic population mechanisms such as reproductive strategies or by structuring properties of habitat such as heterogeneity and associated scale differences. To discriminate between these two classes of factors the authors have applied a predictive hierarchichal model to clone data from 9 northern German lakes (46 clones; N=1236). The model operated reliably by using ecological ranges (a course measure of heterogeneity) of taxa. Concordance of observed patterns and predictions of the model would favor the heterogeneity hypothesis, while the opposite result would suggest greater influence of population-based mechanisms in explaining clonal diversity/abundance patterns. The results of their analysis point towards habitat heterogeneity as the dominant determinant of diversity and abundance structure of Daphnia populations in lakes.
- Research Organization:
- Univ. of Windsor, Windsor, Ontario (CA); Savannah River Plant Lab., Aiken, SC (US)
- OSTI ID:
- 5907056
- Report Number(s):
- CONF-870835-
- Journal Information:
- Bull. Ecol. Soc. Am.; (United States), Vol. 68:3; Conference: 72. annual meeting of the Ecological Society of America, Columbus, OH, USA, 9 Aug 1987
- Country of Publication:
- United States
- Language:
- English
Similar Records
The dynamics of adaptive genetic diversity during the early stages of clonal evolution
Nearly a decade-long repeatable seasonal diversity patterns of bacterioplankton communities in the eutrophic Lake Donghu (Wuhan, China)
Related Subjects
DAPHNIA
POPULATION DYNAMICS
LAKES
AQUATIC ECOSYSTEMS
ABUNDANCE
ECOLOGY
FEDERAL REPUBLIC OF GERMANY
HABITAT
MATHEMATICAL MODELS
SPECIES DIVERSITY
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BRANCHIOPODS
CRUSTACEANS
ECOSYSTEMS
EUROPE
INVERTEBRATES
SURFACE WATERS
WESTERN EUROPE
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)