三种温带大型藻类对不同持续时间和强度的海洋热浪的耐受性不受辐照度的调节

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Phycologia Pub Date : 2023-10-17 DOI:10.1080/00318884.2023.2267411
Erik C. Krieger, Yaelle Sarid-Segal, Imke M. Böök, Aleluia Taise, Denisa Berbece, Christopher E. Cornwall
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引用次数: 1

摘要

摘要海洋热浪被认为是海洋变化的主要驱动因素。然而,与其他重要的局部和全球驱动因素的相互作用,如海洋酸化、富营养化和沉积,以及mhw作用于物种的生理机制,人们知之甚少。此外,过去的研究往往集中在生态优势分类群,如海带、岩藻和珊瑚,可能导致缺乏对相关物种的直接影响的了解。为此,我们研究了高温持续时间(14和28天)、强度(20.5°C和23°C)以及辐照度(2.3和4.4 mol m-2 d-1)对在新西兰Whanganui a Tara Wellington的原生生态系统中具有重要空间占用作用的三种温带大型藻类分类群Caulerpa brownii、Corallina berteroi和Phymatolithopsis complex标准化生长的个体和交互影响。所有3个类群对暴露于更长时间和更强的mhw没有表现出生长下降的反应。我们假设模拟的MHW情景是可以容忍的,因为从采样人群的范围中心/前缘位置可以预期到较大的热安全裕度,即使其中一些情景远远超过了该地区以前遇到的强度。强度、持续时间和辐照度之间的相互作用仅限于非钙质绿色大藻褐藻的拮抗辐照度-持续时间相互作用。总之,研究物种对模拟情景的耐受性表明,在褐藻冠层保持完整的情况下,持续时间为四周或更短的强强mhw对新西兰海带森林系统生态系统功能的影响有限。关键词:珊瑚藻气候变化珊瑚藻海带森林海洋热浪感谢r.d 'Archino对珊瑚藻分子鉴定的指导。ECK和CEC得到了新西兰皇家学会的卢瑟福发现奖学金(Apārangi)的支持。RDF-VUW1701),沿海人民南方天空卓越研究中心,以及惠灵顿大学维多利亚大学研究基金授予CEC。seck, YSS, IMB, AT和CEC设计了本研究。ECK撰写了这篇论文。YSS在所有其他作者的协助下进行了实验。YSS和ECK进行了分子种类鉴定。ECK进行统计分析。所有作者编辑稿件,或提供智力输入,并同意其提交。声明作者未报告潜在的利益冲突。补充信息:本文的补充数据可在https://doi.org/10.1080/00318884.2023.2267411Additional上在线获取。沿海人南方天空卓越研究中心;新西兰皇家学会网站Apārangi [RDF-VUW1701]。
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Tolerance of three temperate macroalgal taxa to marine heatwaves of differing durations and intensities is not modulated by irradiance
ABSTRACTMarine heatwaves (MHWs) are recognized as principal drivers of ocean change. However, interactions with other important local and global drivers such as ocean acidification, eutrophication and sedimentation, and the physiological mechanisms via which MHWs act on species are poorly understood. Additionally, past studies have often focused on ecologically dominant taxa such as kelps, fucoids and coral, potentially leading to a lack of understanding of direct impacts on associated species. To this end, we examined the individual and interactive impacts of MHW duration (14 and 28 days) and intensity (20.5°C and 23°C) as well as irradiance (2.3 and 4.4 mol m–2 d–1) on standardized growth of Caulerpa brownii, Corallina berteroi and Phymatolithopsis complex, three temperate macroalgal taxa that are important spaceholders in their native ecosystem in Te Whanganui a Tara Wellington, Aotearoa New Zealand. All three taxa exhibited no declines in growth in response to the exposure to longer and more intense MHWs. We posit that the simulated MHW scenarios were tolerated due to large thermal safety margins which can be expected from the range centre/leading edge position of the sampled populations, even though some of these scenarios far exceeded the intensities encountered in this region previously. Interactions between intensity, duration and irradiance were limited to an antagonistic irradiance-duration interaction in the non-calcareous green macroalga Ca. brownii only. Together, the displayed tolerance of the study species to the simulated scenarios implies limited impacts of strong MHWs four weeks or shorter in duration on ecosystem functioning in New Zealand kelp forest systems if brown algal canopies remain intact.KEYWORDS: CaulerpaClimate changeCoralline algaeKelp forestMarine heatwave ACKNOWLEDGMENTSWe thank R. D’Archino for guiding the molecular identification of coralline algae. ECK and CEC were supported by a Rutherford Discovery Fellowship from The Royal Society of New Zealand Te Apārangi (no. RDF-VUW1701), Coastal People Southern Skies Centre of Research Excellence, and Victoria University of Wellington University Research Grant awarded to CEC.AUTHOR CONTRIBUTIONSECK, YSS, IMB, AT and CEC designed the research. ECK wrote the paper. YSS ran the experiment with assistance from all other authors. YSS and ECK conducted molecular species identification. ECK performed the statistical analysis. All authors edited the manuscript, or provided intellectual input, and agreed to its submission.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2267411Additional informationFundingThis work was supported by the Victoria University of Wellington University Research Grant; Coastal People Southern Skies Centre of Research Excellence; Royal Society of New Zealand Te Apārangi [RDF-VUW1701].
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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