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Ecology, Diversity and Conservation of Seaweeds

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainability, Biodiversity and Conservation".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 4107

Special Issue Editors


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Guest Editor
Fisheries College, Ocean University of China, Qingdao 266003, China
Interests: physiological responses of algae to environmental stress; commercial algae cultivation; marine forest conservation and restoration; phycosphere microbes; harmful algae blooms

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Guest Editor
College of marine life sciences, Ocean University of China, Qingdao 266003, China
Interests: genetic resource conservation of seaweeds; kelp genetic improvement and variety breeding; seaweed cultivation and enhancement

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Guest Editor
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266003, China
Interests: breeding and population genetics of marine macroalgae

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Guest Editor
College of life sciences, Yantai University, Yantai 264005, China
Interests: physiological response of algae to climate change; algal biological environmental technology; harmful algal blooms; development and utilization of algal biological resources; aquaculture ecology

Special Issue Information

Dear Colleagues,

Seaweeds are invaluable primary producers with high productivity in coastal ecosystems. They play an ecologically important role in maintaining the biodiversity of understory flora and fauna through the provision of habitats and spawning grounds, the reduction of physical stresses and the maintenance of food webs. Additionally, the aquaculture production of commercially important seaweeds is increasing due to the rising demand for their utilization as food and raw industrial materials. Climate change, human activities and other factors in the past several decades have imposed unparalleled impacts on the diversity and ecological performance of seaweeds worldwide. Consequently, investigating the patterns, processes and mechanisms associated with seaweeds’ adaptation and evolution using experimental ecology and genetics can undoubtedly provide practical insights for managing, monitoring and preserving seaweed resources under ongoing climate change. The focus of this Special Issue is on research that uses ecological or genetic methods, and especially the linkage between both, to explore how seaweeds respond to environmental change. We aim to summarize the current achievements, measures, methods and technology for the conservation and application of seaweed resources.

In this Special Issue, we invite research contributions of cutting-edge studies informing the ecology, diversity and conservation practice for seaweed species. We encourage researchers to publish their findings regarding the biology, ecology and physiology of seaweeds, the management and restoration of seaweed beds, and their specific and genetic diversity. Original research articles, reviews and short communications are welcome. Research areas may include (but are not limited to) the following: biodiversity, ecophysiology, ecological restoration, and seaweed resource conservation.

We look forward to receiving your contributions.

Prof. Dr. Xu Gao
Prof. Dr. Fuli Liu
Dr. Tifeng Shan
Prof. Dr. Ronglian Xing
Guest Editors

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Keywords

  • ecophysiology
  • cultivation
  • climate change
  • diversity and phylogeny
  • harmful algae
  • interactions between seaweeds and microbes
  • marine ecological environments
  • population genetics
  • resource conservation and restoration

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Published Papers (2 papers)

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Research

16 pages, 1519 KiB  
Article
Physiological Impacts of Nitrogen Starvation and Subsequent Recovery on the Red Seaweed Grateloupia turuturu (Halymeniaceae, Rhodophyta)
by Yining Chen, Lan Lan, Jing Zhang, Qiaohan Wang, Yan Liu, Huiru Li, Qingli Gong and Xu Gao
Sustainability 2023, 15(9), 7032; https://doi.org/10.3390/su15097032 - 22 Apr 2023
Cited by 2 | Viewed by 1278
Abstract
Grateloupia turuturu is a potential aquaculture species as it has a significant number of high-valued compounds. The purpose of this study was to evaluate the physiobiochemical performances of G. turuturu under nitrogen deficiency and resupply. In this study, G. turuturu was exposed to [...] Read more.
Grateloupia turuturu is a potential aquaculture species as it has a significant number of high-valued compounds. The purpose of this study was to evaluate the physiobiochemical performances of G. turuturu under nitrogen deficiency and resupply. In this study, G. turuturu was exposed to different lengths of nitrogen starvation (from 0 to 28 days) and subsequently subjected to a 21-day nitrogen-recovery period. The nitrate and ammonium uptake rates, growth rates, and nitrogenous compounds of G. turuturu were periodically measured. The results showed that the nitrogen-starved G. turururu absorbed ammonium much faster than nitrate after nitrogen recovery. Furthermore, an overcompensatory uptake of ammonium was induced via nitrogen deficiency in a short phase after nitrogen resupply. The time and rates of depletion of different compositions varied during nitrogen starvation. Specifically, pigment contents decreased faster than protein and total nitrogen contents, and the reduction rate of protein was the lowest. After nitrogen resupply, though G. turuturu gradually recovered, growth rates and pigments from long-term nitrogen starvations could not recover enough to reach their original values. Our study reveals the physiological changing processes of G. turuturu during nitrogen starvation and recovery and provides baseline information aiding in the development of strategies for G. turuturu cultivation. Full article
(This article belongs to the Special Issue Ecology, Diversity and Conservation of Seaweeds)
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17 pages, 1829 KiB  
Article
Effects of Nitrogen Source and Concentration on the Growth and Biochemical Composition of the Red Seaweed Grateloupia turuturu (Halymeniaceae, Rhodophyta)
by Qiaohan Wang, Lan Lan, Huiru Li, Qingli Gong and Xu Gao
Sustainability 2023, 15(5), 4210; https://doi.org/10.3390/su15054210 - 26 Feb 2023
Cited by 6 | Viewed by 1873
Abstract
Seaweeds, as biofilters that remediate seawater eutrophication, have been widely applied in integrated cultivations for both ecological and economic benefits. Although Grateloupia turuturu (Rhodophyta) is considered as a qualified species in integrated maricultivation, its growth and biochemical performance under different nitrogen conditions are [...] Read more.
Seaweeds, as biofilters that remediate seawater eutrophication, have been widely applied in integrated cultivations for both ecological and economic benefits. Although Grateloupia turuturu (Rhodophyta) is considered as a qualified species in integrated maricultivation, its growth and biochemical performance under different nitrogen conditions are still unknown. Here, we cultured G. turuturu under two nitrogen sources (nitrate and ammonium) at six concentrations (0, 25, 50, 100, 200, and 400 µM) to investigate its growth and nitrogenous compounds (total and inorganic nitrogen, soluble protein, amino acids, and pigments) as well as the allocation pattern of nitrogen storage pools. Our results showed that G. turuturu was well acclimated to high concentrations of both nitrogen sources, and algal age played an important role in the preference of nitrogen sources. Most of the biochemical compositions in G. turuturu increased significantly with the increased concentrations of nitrogen, except for the protein and nitrate contents. Protein and residual organic nitrogen (RON, mainly amino acids) were found to be the two main nitrogen storage pools in G. turuturu. Our study revealed that G. turuturu can produce more profitable compositions at high nitrogen concentrations, making it a profitably promising biofilter to remediate eutrophication. Full article
(This article belongs to the Special Issue Ecology, Diversity and Conservation of Seaweeds)
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