Temperature response in a shallow-water Mediterranean population of Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta), and a possible strategy of season anticipation
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Maria Monia Flagella
Abstract
We studied growth and photosynthetic response of a shallow-water population of the invasive alga Caulerpa racemosa var. cylindracea off the Island of Ischia (Gulf of Naples, Italy). The effects of temperature on relative growth rate (RGR), light-saturated photosynthetic rate (Pmax), dark respiration rate (Rd) and optimal quantum yield (Fv/Fm) were assessed for thalli collected in two seasons (early winter and early summer). While temperatures higher than 22°C stressed early winter thalli, as reflected in the decrease in growth rates and optimal quantum yields, both increased with temperature in early summer plants. A difference between the two seasonal samples also occurred in the high-temperature sensitivity of respiration rates, which was enhanced in early winter plants. As changes in a number of the traits considered occur in advance of seasonal minima and maxima, C. racemosa var. cylindracea may behave as a season anticipator. The contribution of observed patterns to the colonization success of the alga is discussed.
©2008 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Review
- Alien marine macrophytes in Greece: a review
- Research articles
- Effects of erosion and macroalgae on intertidal eelgrass (Zostera marina) in a northeastern Pacific estuary (USA)
- A reassessment of Halophila species (Hydrocharitaceae) diversity with special reference to Japanese representatives
- Survey and phytochemical analysis of seagrasses in the Gulf of Mannar, southeast coast of India
- Temperature response in a shallow-water Mediterranean population of Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta), and a possible strategy of season anticipation
- Dynamics and patterns of algal colonization on mechanically damaged and dead colonies of the coral Porites lutea
- Toxicity, morphology and distribution of Pseudo-nitzschia calliantha, P. multistriata and P. multiseries (Bacillariophyta) from the northwestern Sea of Japan
- Ceramium periconicum sp. nov. (Ceramiaceae, Rhodophyta): a new subtidal species from Baja California Sur, Mexico
- Seaweed polysaccharides with anticancer potential
- Iron, zinc, copper, lead and cadmium contents in Ruppia maritima from a Mediterranean coastal lagoon: monthly variation and distribution in different plant fractions
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