AI Article Synopsis
- - The study investigates how deepening thermoclines due to rising temperatures affect the seagrass species Posidonia oceanica in Cyprus, focusing on their performance in changing climate conditions.
- - Researchers conducted a manipulative experiment by transplanting seagrass from a deeper location (31m) to a shallower one (12m), simulating deeper light conditions to observe changes in morphology and physiology.
- - Results showed that the thermocline and original depth impacted the seagrass, leading to increased leaf necrosis and decreased leaf area, but no significant change in growth rate, suggesting that P. oceanica can acclimate to future thermocline shifts, which is useful for restoration efforts.
Article Abstract
The deepening of the thermocline, correlated to the rising temperature, can contribute affecting seagrass performance in a changing climate scenario. Here, the effect of the thermocline deepening on the seagrass Posidonia oceanica has been investigated in Cyprus through a manipulative experiment that allowed also testing the effects of the irradiance, origin depth and translocation. P. oceanica shoots were collected from 31 m of depth and transplanted at 12 m under a shading net, simulating the 31 m light conditions. Morphology (i.e. leaf area, leaf necrosis, number of leaves) and physiology (i.e. growth rate) were evaluated. Thermocline and origin depth effects were found with an increase of leaf necrosis, while a translocation effect was highlighted by a decrease in leaf area. No differences in shoot growth rate due to treatments were found. This experiment indicated an overall wide morphological and physiological acclimation of P. oceanica cuttings in coping with future thermocline conditions and it indirectly provides information for restoration efforts.
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| http://dx.doi.org/10.1016/j.marpolbul.2023.114824 | DOI Listing |
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