Relationships between growth, population dynamics, and environmental parameters in the solitary non-zooxanthellate scleractinian coral Caryophyllia inornata along a latitudinal gradient in the Mediterranean Sea

The ecology of scleractinian corals may be understood through comparisons between population demographic data and environmental parameters. Growth (growth constant and maximum size) and demographic parameters (population structure stability, instantaneous mortality rate, average age of individuals,...

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Bibliographic Details
Published in:Coral reefs 2016-06, Vol.35 (2), p.507-519
Main Authors: Caroselli, E, Ricci, F, Brambilla, V, Mattioli, G, Levy, O, Falini, G, Dubinsky, Z, Goffredo, S
Format: Article
Language:English
Subjects:
Animal populations
Caryophyllia inornata
Coral reefs
Environment
Global warming
Leptopsammia pruvoti
Scleractinia
Temperature
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Summary:The ecology of scleractinian corals may be understood through comparisons between population demographic data and environmental parameters. Growth (growth constant and maximum size) and demographic parameters (population structure stability, instantaneous mortality rate, average age of individuals, percentage of immature individuals, age at maximum biomass, and average age of biomass) of the solitary, non-zooxanthellate, and temperate coral Caryophyllia inornata were investigated at six sites along an 8° latitudinal gradient of temperature and solar radiation (SR) on the western Italian coasts. Growth parameters were homogeneous among populations across the investigated latitudinal range. While demographic parameters were not correlated with depth temperature, populations were progressively less stable and showed a deficiency of young individuals with increasing SR, likely as a result of the lowered energetic resources due to reduced zooplankton availability. These results contrast with data from another Mediterranean non-zooxanthellate solitary coral, Leptopsammia pruvoti, investigated along the same gradient, which shows no correlation between population demography and temperature or SR.
ISSN:0722-4028
1432-0975
DOI:10.1007/s00338-015-1393-9