Herbarium macroalgae specimens reveal a rapid reduction of thallus size and reproductive effort related with climate change

Alfonso, Beatriz; Sansón, Marta; Sangil, Carlos; Expósito, Francisco J.; Dı́az, J. P.; Hernández, José Carlos

doi:10.1016/j.marenvres.2021.105546

Cited by 5 publications

(2 citation statements)

References 78 publications

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“…In response to these disruptions, shifts in the distribution patterns of canopy species occur. Notably, these shifts are observed with a decline in canopy-forming species, the increase in morphologically simpler warm-water species and coralline algae, and the progressive introduction and expansion of non-indigenous species [45,78,79,[98][99][100][101][102][103][104][105].…”

Section: Gelidium Corneum Biology Distribution and Ecologymentioning

confidence: 99%

The Red Seaweed Giant Gelidium (Gelidium corneum) for New Bio-Based Materials in a Circular Economy Framework

Mouga

Fernandes

2022

Earth

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Gelidium corneum (Giant Gelidium or Atlantic agar) is a well-known red seaweed harvested for its high-quality agar content. Agar is a mixture of the polysaccharides used in the food industry as a gelling, thickener, clarifying, and stabilizer agent. The best agar quality is also used in the laboratory as bacteriological agar. Yet, in recent years, the species has been studied for many other applications. Examples of uses are pharmaceuticals, cosmetics, food supplements, bioremediation, biofuels, biofertilizers and biostimulants, biomaterials, and nanocrystals, among others. The use of this biomass, though, raises concerns about the sustainability of the resource, since this is not a cultivated species, being harvested in the wild. Thus, other uses of G. corneum biomass increase pressure on wild stocks already stressed due to climate change. However, in a biorefinery approach, a new trend is emerging, using waste biomass rather than harvested biomass to produce new bio-based materials. These are smart solutions that transform waste into innovative products, useful for various sectors of society while reducing the impact of biomass exploitation. The aim of this review paper, thus, is to address the current state of G. corneum biology, ecology, threats, its current uses and market, and the ongoing research on innovative proposals in a circular economy framework.

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Section: Gelidium Corneum Biology Distribution and Ecologymentioning

confidence: 99%

The Red Seaweed Giant Gelidium (Gelidium corneum) for New Bio-Based Materials in a Circular Economy Framework

Mouga

Fernandes

2022

Earth

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“…27,29,31 Macroalgae herbaria are starting to be used to investigate the marine environment although they remain underutilised on samples prior to the 20th century. 29,32,33 Recently, Miller et al 32 used macroalgae herbaria and nitrogen isotopes to reconstruct past upwelling trends along the Californian coastthis approach was adopted since that is the dominant environmental mechanism affecting nitrogen isotopes in that region.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen isotopes in herbaria document historical nitrogen sewage pollution in the Mersey Estuary, England

Alldred,

Gröcke,

Jackson

et al. 2024

Environ. Sci.: Adv.

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Global warming and coastal protected areas: A study on phytoplankton abundance and sea surface temperature in different regions of the Brazilian South Atlantic Coastal Ocean

da Silveira Bueno,

Paytan,

de Souza

et al. 2024

Ecology and Evolution

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In this study, we examined the relationship between sea surface temperature (SST) and phytoplankton abundance in coastal regions of the Brazilian South Atlantic: São Paulo, Paraná, and Santa Catarina, and the Protection Area of Southern right whales (Eubalaena australis) in Santa Catarina (APA), a conservation zone established along 130 km of coastline. Using SST and chlorophyll‐a (Chl‐a) data from 2002 to 2023, we found significant differences in SST between the regions, with São Paulo having the highest SST, followed by Paraná and Santa Catarina. All locations showed a consistent increase in SST over the years, with North Santa Catarina, APA and São Paulo experiencing the lowest rate of increase. Correlation analyses between SST and Chl‐a revealed a stronger inverse relationship in North Santa Catarina and APA, indicating an increased response of Chl‐a to SST variations in this region. The presence of protected area appears to play an essential role in reducing the negative impacts of increasing SST. Specifically, while there is a wealth of research on the consequences of global warming on diverse coastal and oceanic areas, heterogeneity among different settings persists and the causes for this necessitating attention. Our findings have implications for both localized scientific approaches and broader climate policies, emphasizing the importance of considering coastal ecosystem resilience to climate change in future conservation and adaptation strategies.

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Herbarium macroalgae specimens reveal a rapid reduction of thallus size and reproductive effort related with climate change

Cited by 5 publications

References 78 publications

The Red Seaweed Giant Gelidium (Gelidium corneum) for New Bio-Based Materials in a Circular Economy Framework

The Red Seaweed Giant Gelidium (Gelidium corneum) for New Bio-Based Materials in a Circular Economy Framework

Nitrogen isotopes in herbaria document historical nitrogen sewage pollution in the Mersey Estuary, England

Global warming and coastal protected areas: A study on phytoplankton abundance and sea surface temperature in different regions of the Brazilian South Atlantic Coastal Ocean

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