气候变化领域集成服务门户(CCPortal): Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves

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DOI	10.1111/jpy.13433
	Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves
	Almeida-Saa, Antonella C.; Umanzor, Schery; Zertuche-Gonzalez, Jose Antonio; Cruz-Lopez, Ricardo; Muniz-Salazar, Raquel; Ferreira-Arrieta, Alejandra; Melia, Paula Bonet; Garcia-Pantoja, Jessica Anayansi; Rangel-Mendoza, Laura K.; Vivanco-Bercovich, Manuel; Ruiz-Montoya, Leonardo; Guzman-Calderon, Jose Manuel; Sandoval-Gil, Jose Miguel
发表日期	2024
ISSN	0022-3646
EISSN	1529-8817
起始页码	60
结束页码	2
卷号	60 期号:2
英文摘要	Kelp communities are experiencing exacerbated heat-related impacts from more intense, frequent, and deeper marine heatwaves (MHWs), imperiling the long-term survival of kelp forests in the climate change scenario. The occurrence of deep thermal anomalies is of critical importance, as elevated temperatures can impact kelp populations across their entire bathymetric range. This study evaluates the impact of MHWs on mature sporophytes of Pterygophora californica (walking kelp) from the bathymetric extremes (8-10 vs. 25-27 m) of a population situated in Baja California (Mexico). The location is near the southernmost point of the species's broad distribution (from Alaska to Mexico). The study investigated the ecophysiological responses (e.g., photobiology, nitrate uptake, oxidative stress) and growth of adult sporophytes through a two-phase experiment: warming simulating a MHW and a post-MHW phase without warming. Generally, the effects of warming differed depending on the bathymetric origin of the sporophytes. The MHW facilitated essential metabolic functions of deep-water sporophytes, including photosynthesis, and promoted their growth. In contrast, shallow-water sporophytes displayed metabolic stress, reduced growth, and oxidative damage. Upon the cessation of warming, certain responses, such as a decline in nitrate uptake and net productivity, became evident in shallow-water sporophytes, implying a delay in heat-stress response. This indicates that variation in temperatures can result in more prominent effects than warming alone. The greater heat tolerance of sporophytes in deeper waters shows convincing evidence that deep portions of P. californica populations have the potential to serve as refuges from the harmful impacts of MHWs on shallow reefs.
英文关键词	climate change; depth; heat stress; kelp ecophysiology; photobiology; thermal stress responses
语种	英语
WOS研究方向	Plant Sciences ; Marine & Freshwater Biology
WOS类目	Plant Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:001147998500001
来源期刊	JOURNAL OF PHYCOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289461
作者单位	Universidad Autonoma de Baja California; University of Alaska System; University of Alaska Fairbanks; Universidad Autonoma de Baja California; CICESE - Centro de Investigacion Cientifica y de Educacion Superior de Ensenada
推荐引用方式 GB/T 7714	Almeida-Saa, Antonella C.,Umanzor, Schery,Zertuche-Gonzalez, Jose Antonio,et al. Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves[J],2024,60(2).
APA	Almeida-Saa, Antonella C..,Umanzor, Schery.,Zertuche-Gonzalez, Jose Antonio.,Cruz-Lopez, Ricardo.,Muniz-Salazar, Raquel.,...&Sandoval-Gil, Jose Miguel.(2024).Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves.JOURNAL OF PHYCOLOGY,60(2).
MLA	Almeida-Saa, Antonella C.,et al."Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves".JOURNAL OF PHYCOLOGY 60.2(2024).