潮间带海带无柄海带和边缘海带(叠层海带)对关节和甲壳珊瑚藻类的补充。

IF 2.8 3区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Ruby Burns, Brenton A Twist, Patrick T Martone
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引用次数: 0

摘要

海带和珊瑚藻是岩质潮间带生态系统中重要的初级生产者和生境建设者。在北美西海岸的波浪暴露的海岸上,无柄海带和边缘海带是两种优势的海带物种,其幼体在珊瑚上的密度通常高于其他可用的基质。人们对这种相互作用的机制知之甚少。一种假设的机制是关节珊瑚藻促进海带孢子的沉降和萌发。本研究通过将无柄珊瑚和边缘珊瑚的孢子释放到多个基因鉴定的铰接珊瑚和甲壳珊瑚物种以及裸露的岩石上,然后观察随后的孢子体密度,来验证这一假设。尽管不同种类的珊瑚存在差异,但海带在关节珊瑚上的吸收通常高于甲壳珊瑚。在裸岩和关节珊瑚上,海带的招募量没有显著差异,而在白化的温哥华珊瑚上的招募量高于活的温哥华珊瑚,这表明这种关节珊瑚积极抑制而不是促进潮间带的定居。因此,其他机制,如保护免受草食或波浪作用,可能解释了观察到的海带新兵分布。这项研究有助于理解海带的精细分布与珊瑚的精细分布之间的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recruitment of intertidal kelps Hedophyllum sessile and Alaria marginata (Laminariales) to articulated and crustose coralline algal species.

Kelps and coralline algae are important primary producers and habitat-builders in rocky intertidal ecosystems. On wave-exposed shores along the west coast of North America, Hedophyllum sessile and Alaria marginata are two dominant kelp species with juveniles that often occur at a higher density on articulated corallines than other available substrates. Little is known of the mechanisms underlying this interaction. One hypothesized mechanism is that articulated coralline algae enhance kelp spore settlement and germination. This study tested this hypothesis by releasing spores from H. sessile and A. marginata onto multiple genetically identified articulated and crustose coralline species, as well as bare rock, then observing subsequent sporophyte densities. Kelp recruitment was generally higher on articulated corallines than on crustose corallines, although there was variation across coralline species. There was no significant difference between recruitment on bare rock and on articulated corallines, and recruitment was higher on bleached Corallina vancouveriensis than on live C. vancouveriensis, suggesting that this articulated coralline actively inhibits rather than promotes intertidal kelp settlement. Thus, other mechanisms, such as protection from herbivory or wave action, likely explain observed distributions of kelp recruits. This research contributes to understanding how the fine-scale distribution of kelps is linked to that of corallines.

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来源期刊
Journal of Phycology
Journal of Phycology 生物-海洋与淡水生物学
CiteScore
6.50
自引率
3.40%
发文量
69
审稿时长
2 months
期刊介绍: The Journal of Phycology was founded in 1965 by the Phycological Society of America. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist, physiologist, cell biologist, molecular biologist, morphologist, oceanographer, taxonomist, geneticist, and biochemist. The Journal also welcomes research that emphasizes algal interactions with other organisms and the roles of algae as components of natural ecosystems. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist, physiologist, cell biologist, molecular biologist, morphologist, oceanographer, acquaculturist, systematist, geneticist, and biochemist. The Journal also welcomes research that emphasizes algal interactions with other organisms and the roles of algae as components of natural ecosystems.
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