Record details

Title
    Evolution of intraspecific morphological variability and its relationship to environment (Caliapora battersbyi, Devonian)
Statement of responsibility
    Jindřich Hladil
Author
    Hladil, Jindřich, 1953-
Language
    anglicky
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
Vol./nr.
    Vol. 73, no. 1
Pages
    p. 61-74
Year
    1998
Notes
    8 obr., 1 fot., 1 tab., 2 s.bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    devon-střední
    ekologie
    evoluce biologická
    moravskoslezské prevariské paleozoikum
    morfologie funkční
    paleobiogeografie
    Tabulata
Geographical name
    Belgie
    ČR-Morava
    Malajsie
Keyword
    Battersbyi
    Caliapora
    Devonian
    Environment
    Evolution
    Intraspecific
    Morphological
    Relationship
    Variability
Abstract (in english)
   Quantitative evaluation of morphology including parameters of environment provided these results: Morphological variability of the species decreased slowly but continuosly, beginning from the stage of its intial biotic radiation. Episodes of increased variability corresponded to agitated water and strokes of sedimentary clasts. Local maxima of variability are also correlated with the longevity of longevity of coral colonies. Surprisingly, the changes of morphological variability are almost independent of the changes of diversity of accompanying corallomorph fauna and flora. Variability displayed negative correlation with direct biological attack during the initial 3/5 of the Givetian history of the species. Then a change arose and during the remainning times untill the end of the Givetian, the variability displayed a negative correlation with the direct biological atack. The weakly positive correlation of variability with the density of the populations has been documented.
   Similar but not identical complexes of morphological features in conjunction with a specific decrease/increase in variability were found during several ecological crises during the Middle and Late Givetian (a primary control by marine regressions on carbonate platforms). To conclude, the study about C. battersbyi indicates that the intraspecific morphological variability of tabulate corals is not only dominantly controlled by energy of waves and quality of the sedimentary substrate, as it would correspond to state-of-art of the discipline before this study. The morphological variability reflects distinctively also the ecological and evolutionary situations
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    18. 2. 2008
Import date
    8. 8. 2012