Population dynamics of the brown alga Himanthalia elongata under harvesting pressure

Stagnol, Doriane; Michel, Renaud; Davoult, Dominique

doi:10.1016/j.ecss.2016.03.014

Cited by 4 publications

(5 citation statements)

References 27 publications

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“…Some species like L. digitata, C. crispus, and P. palmata have an historical record of consumption as food (García Tasende and Rodríguez González, 2003;Mouritsen et al, 2013;Mac Monagail et al, 2017). Himanthalia elongata, harvested in Europe for centuries and used as fertilizer, food and for hydrocolloid extraction, is currently collected in France, Ireland and Spain mainly for human consumption (Stagnol et al, 2016). Alaria esculenta and S. latissima are often sold directly for human consumption or as high added-value food ingredients (Stévant et al, 2017).…”

Section: Biomass Applicationsmentioning

confidence: 99%

Current Status of the Algae Production Industry in Europe: An Emerging Sector of the Blue Bioeconomy

et al. 2021

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The EU Bioeconomy Strategy aims to support the sustainable growth and development of the EU bio-based sectors while creating jobs, innovation and services. Despite the recognized potential of the algae biomass value chain, significant knowledge gaps still exist regarding the dimension, capability, organization and structure of the algae production in Europe. This study presents and analyses the results of a comprehensive mapping and detailed characterization of the algae production at the European scale, encompassing macroalgae, microalgae, and the cyanobacteria Spirulina. This work mapped 447 algae and Spirulina production units spread between 23 countries, which represents an important addition to the reported number of algae producing countries. More than 50% of these companies produce microalgae and/or Spirulina. Macroalgae production is still depending on harvesting from wild stocks (68% of the macroalgae producing units) but macroalgae aquaculture (land-based and at sea) is developing in several countries in Europe currently representing 32% of the macroalgae production units. France, Ireland, and Spain are the top 3 countries in number of macroalgae production units while Germany, Spain, and Italy stand for the top 3 for microalgae. Spirulina producers are predominantly located in France, Italy, Germany, and Spain. Algae and Spirulina biomass is directed primarily for food and food-related applications including the extraction of high-value products for food supplements and nutraceuticals. Algae production in Europe remains limited by a series of technological, regulatory and market-related barriers. Yet, the results of this study emphasize that the European algae sector has a considerable potential for sustainable development as long as the acknowledged economic, social and environmental challenges are addressed.

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Section: Biomass Applicationsmentioning

confidence: 99%

Current Status of the Algae Production Industry in Europe: An Emerging Sector of the Blue Bioeconomy

et al. 2021

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“…L. trabeculata recovery may take over two years ([ 73 ] and references therein). H. elongata and F. serratus can recover within 12 months after harvesting [ 74 , 75 ].…”

Section: Resources Sustainability and Regulation Of Seaweed-based Bio...mentioning

confidence: 99%

Current Insights into the Molecular Mode of Action of Seaweed-Based Biostimulants and the Sustainability of Seaweeds as Raw Material Resources

Sujeeth

Petrov

Guinan

et al. 2022

IJMS

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Natural biostimulants, such as seaweed extracts, can stimulate plant growth and development in both model and crop plants. Due to the increasing demands for their use in agriculture, it is crucial to ensure the sustainability of the sources from which they are produced. Furthermore, some seaweed extracts were recently shown to prime and protect from adverse environmental factors such as drought, salinity and extreme temperatures, as well as from oxidative stress. The molecular mode of action of these biostimulants has still not been fully elucidated, but there has been significant progress in this direction in the last years. Firstly, this review examines the sustainability aspects of harvesting seaweed resources as raw materials for manufacturing biostimulants and provides an overview of the regulatory landscape pertaining to seaweed-based biostimulants. The review then summarises the recent advances in determining the genetic and molecular mechanisms activated by seaweed-based biostimulants, their influence on transcriptome reconfiguration, metabolite adjustment, and ultimately stress protection, improved nutrient uptake, and plant growth and performance. This knowledge is important for deciphering the intricate stress signalling network modulated by seaweed-based biostimulants and can aid in designing molecular priming technologies for crop improvement.

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“…Himanthalia elongata has been harvested in Europe for centuries for use as fertilizer, food and for hydrocolloid extraction. It is currently harvested in France, Ireland and Spain mainly for human consumption (Stagnol et al, 2016). In Brittany, between 2009 and 2013, the annual harvesting of H. elongata increased by 35% (Stagnol et al, 2016).…”

Section: Impacts Of Over-harvesting On Resourcesmentioning

confidence: 99%

“…It is currently harvested in France, Ireland and Spain mainly for human consumption (Stagnol et al, 2016). In Brittany, between 2009 and 2013, the annual harvesting of H. elongata increased by 35% (Stagnol et al, 2016). In France, the collection of seaweeds for personal consumption is not regulated, nor managed, and the situation is similar in Portugal, where H. elongata populations are suffering from reduced local abundance and even some local extinctions (Lima et al, 2007, Araujo, personal observations).…”

Section: Impacts Of Over-harvesting On Resourcesmentioning

confidence: 99%

“…The increasing presence of invasive species, as a result of climatic changes or shipping activities, is also a growing concern (Díez et al, 2012), For most of these species the biomass supply for commercial purposes is assured by the careful harvesting from wild stocks. Some works have examined the effects of harvesting on associated habitats and organisms (Lorentsen et al, 2010;Stagnol et al, 2013Stagnol et al, , 2016, but empirical studies on this topic are still scarce and controversial for many of the commercially explored species and regions in Europe. This knowledge assumes particular importance at edge locations, where organisms might be ecophysiologically constrained and natural population dynamics might respond differently to the sustainable harvesting practices which have been established for other regions.…”

Section: Climate Change and Distributional Shifts In Speciesmentioning

confidence: 99%

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Sustainable harvesting of wild seaweed resources

Monagail

Cornish²,

Morrison

et al. 2017

European Journal of Phycology

170

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Macroalgae have played an important role in coastal communities for centuries. In the past, they have been harvested and gathered from shorelines around the world for traditional uses such as food, animal feed and a crude fertilizer (marine manure). Today, seaweeds are used in a multitude of applications with expanding global industries based on hydrocolloids, cosmetics and food supplements, and also as a potential biofuel source. However, of the approximately 10 000 algal species reported to exist, only a small number are commercially utilized. While representing only a small fraction of total global seaweed production, harvesting and gathering 'wild' seaweeds has had, and continues to have, an integral role in many coastal societies, often being intrinsically linked to the cultural identity of those coastal communities. Today, 32 countries actively harvest seaweeds from wild stocks, with over 800 000 t harvested annually from natural beds. It is vitally important that seaweeds are utilized sustainably and that natural resources are effectively managed by coastal communities with vested interests around the world. As the popularity of seaweeds increases and the use of less traditional species with novel applications comes to the fore, it is critically important to make certain that the sustainability of the resource is ensured given the increased pressures of harvesting. Issues exist regarding ownership of the resource and its over-exploitation, and the implementation of environmentally damaging harvesting techniques must be avoided. Resource scientists, managers, conservationists, governments, and other stakeholders need to be proactive in the sustainable management of these vulnerable, yet valuable, resources.

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Population dynamics of the brown alga Himanthalia elongata under harvesting pressure

Cited by 4 publications

References 27 publications

Current Status of the Algae Production Industry in Europe: An Emerging Sector of the Blue Bioeconomy

Current Status of the Algae Production Industry in Europe: An Emerging Sector of the Blue Bioeconomy

Current Insights into the Molecular Mode of Action of Seaweed-Based Biostimulants and the Sustainability of Seaweeds as Raw Material Resources

Sustainable harvesting of wild seaweed resources

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