Dipartimento di Architettura, Design e Urbanistica, Università degli Studi di Sassari, via Piandanna 4, 07100 Sassari, Italy.
Dipartimento di Architettura, Design e Urbanistica, Università degli Studi di Sassari, via Piandanna 4, 07100 Sassari, Italy.
Mar Pollut Bull. 2022 Nov;184:114230. doi: 10.1016/j.marpolbul.2022.114230. Epub 2022 Oct 14.
Acclimation is a response that results from chronic exposure of an individual to a new environment. This study aimed to investigate whether the thermal environment affects the early development of the seagrass Posidonia oceanica, and whether the effects of a field-simulated Marine Heat Wave (MHW) on seedlings change depending on acclimation. The experiment was done in the field using a crossed design of Acclimation (acclimated vs unacclimated) and MHW (present vs absent) factors. Acclimation has initially constrained the development of P. oceanica seedlings, but then it increased their resilience to the MHW, under both a morphological and biochemical (fatty acid saturation) level. This treatment could be considered in P. oceanica restoration projects in a climate change-impaired sea, by purposely inducing an increased resistance to heat before transplants.
驯化是个体在长期暴露于新环境后产生的一种反应。本研究旨在探究热环境是否会影响海草波西多尼亚海草的早期发育，以及在野外模拟海洋热浪（MHW）下，幼苗的适应能力是否会因驯化而发生变化。该实验在野外使用驯化（驯化和未驯化）和 MHW（存在和不存在）因素的交叉设计进行。驯化最初限制了波西多尼亚海草幼苗的发育，但随后在形态和生化（脂肪酸饱和度）水平上增加了它们对 MHW 的抵抗力。在气候变化受损的海域中进行波西多尼亚海草修复项目时，可以考虑采用这种处理方法，即在移植前有目的地提高对热的抵抗力。
