Comprehensive Screening of Micro-and Macroalgal Species for Bioenergy

2017 ◽  
pp. 39-56
Author(s):  
Chitralekha Nag Dasgupta ◽  
Sanjeeva Nayaka
Keyword(s):  
Macroalgal Species

scholarly journals Metabolomic variability of four macroalgal species of the genus Lobophora using diverse approaches

2019 ◽  
Vol 162 ◽  
pp. 165-172 ◽  
Author(s):  
Julie Gaubert ◽  
Stéphane Greff ◽  
Olivier P. Thomas ◽  
Claude E. Payri
Keyword(s):  
Macroalgal Species

scholarly journals Seasonal Variation of the Proximate Composition, Mineral Content, Fatty Acid Profiles and Other Phytochemical Constituents of Selected Brown Macroalgae

Marine Drugs ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 204
Author(s):  
Marco Garcia-Vaquero ◽  
Gaurav Rajauria ◽  
Marta Miranda ◽  
Torres Sweeney ◽  
Marta Lopez-Alonso ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Mineral Content ◽  
Fatty Acid Profiles ◽  
Laminaria Digitata ◽  
Laminaria Hyperborea ◽  
Brown Macroalgae ◽  
The West ◽  
Macroalgal Species ◽  
Mineral Profile ◽  
Phytochemical Constituents

The main objective was to determine the chemical, phytochemical, fatty acid and mineral profiles of three commercially relevant brown macroalgae (Laminaria digitata, Laminaria hyperborea and Ascophyllum nodosum) collected each season for two years off the west coast of Ireland. All the chemical, phytochemical, fatty acid and minerals analysed varied significantly depending on the macroalgal species, season and year of collection. Overall, the protein contents of macroalgae were negatively correlated with carbohydrate content. Protein (2–11%) was at its highest during winter and/or spring, decreasing to a minimum during summer and/or autumn. The three macroalgal species analysed in this study had clearly differentiated fatty acid profiles. The concentration of fatty acids was higher in A. nodosum compared with both Laminaria species. The mineral profile of the three macroalgal species was rich in essential metals, particularly Ca, Mg and P, while the levels of I were approximately 9- to 10-fold higher in both Laminaria spp. compared with A. nodosum. The levels of toxic metals (Cd, Hg and Pb) in all the macroalgal species studied were low in the current study; while the levels of total As were high (49–64 mg/kg DW macroalgae) compared with previous reports.

scholarly journals Exploring the role of macroalgal traits on the feeding behaviour of a generalist herbivore in Malaysian waters

2020 ◽  
Vol 63 (5) ◽  
pp. 407-417
Author(s):  
Lim Wai Yin ◽  
Lim Phaik Eem ◽  
Affendi Yang Amri ◽  
Song Sze Looi ◽  
Acga Cheng
Keyword(s):  
South China Sea ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
South China ◽  
Nutritional Quality ◽  
Feeding Behaviour ◽  
Total Nitrogen Content ◽  
Generalist Herbivore ◽  
Macroalgal Species ◽  
Straits Of Malacca

AbstractWith the potential adverse effects of climate change, it is essential to enhance the understanding of marine ecosystem dynamics, which can be driven by the co-evolutionary interaction between autotrophs and herbivores. This study looked into the autotroph-herbivore interactions in Malaysian waters, mainly to determine if autotroph nutritional quality significantly influences herbivore consumption rates. We documented the relative consumption rate of a generalist herbivore (Chanos chanos Forsskål) obtained from the Straits of Malacca through multiple feeding trials using 12 macroalgal species collected from different coastal areas of the Straits of Malacca, the Straits of Johor, and the South China Sea. The herbivore fed selectively on the tested macroalgal species, with the most and least consumed species having the lowest and highest total nitrogen content, respectively. Besides total nitrogen content, the least consumed species also had the highest total phenolic content. Interestingly, we observed that the herbivore generally preferred to consume filamentous macroalgae, especially those collected from the South China Sea. Overall, our findings demonstrated that the feeding behaviour of a generalist herbivore could be influenced by the nutritional quality of the autotrophs, which may depend directly or indirectly on other factors such as autotroph morphology and geography.

Effect of nutrient enrichment on naturally occurring macroalgal species in six cave pools in Bermuda

Phycologia ◽  
2011 ◽  
Vol 50 (2) ◽  
pp. 132-143 ◽  
Author(s):  
Bridget Maloney ◽  
Thomas M. Iliffe ◽  
Frances Gelwick ◽  
Antonietta Quigg
Keyword(s):  
Nutrient Enrichment ◽  
Macroalgal Species ◽  
Naturally Occurring

Biomass decay rates and tissue nutrient loss in bloom and non-bloom-forming macroalgal species

2016 ◽  
Vol 178 ◽  
pp. 58-64 ◽  
Author(s):  
Jessie Conover ◽  
Lindsay A. Green ◽  
Carol S. Thornber
Keyword(s):  
Decay Rates ◽  
Nutrient Loss ◽  
Macroalgal Species

Buoyancy potential of dominant green macroalgal species in the Yellow Sea's green tides, China

2019 ◽  
Vol 140 ◽  
pp. 301-307 ◽  
Author(s):  
Mingzhu Fu ◽  
Shiliang Fan ◽  
Zongling Wang ◽  
Wei Song ◽  
Kaiming Sun ◽  
...  
Keyword(s):  
Green Tides ◽  
Macroalgal Species

Could marine animal conservation laws be responsible for the decline or extirpation of macroalgal populations in Bermuda over the past century?

2017 ◽  
Vol 60 (6) ◽  
Author(s):  
Craig W. Schneider ◽  
Christopher T. Flook
Keyword(s):  
Early 20Th Century ◽  
Past Century ◽  
Herbarium Specimens ◽  
Marine Animal ◽  
Population Abundance ◽  
Protected Species ◽  
Animal Conservation ◽  
Macroalgal Species ◽  
The Past ◽  
The Tropics

AbstractUsing over 10,000 archival herbarium specimens from Bermuda, we compared the presence or absence of seaweeds from a century ago with our more than 5000 collections from the last 30 years. Populations of parrotfish, important herbivores of macroalgae in the tropics, have increased since the 1993 amendment to the Bermuda 1978 Fisheries (Protected Species) Order. A fish pot ban for Bermuda was put into effect in 1990 to protect a variety of fish including parrotfish and several species of grouper, important predators of parrotfish that were rarely seen in island waters at the time. Intertidal grazing West Indian top shells were reintroduced in 1982 to Bermuda, and since then, along with the rise in parrotfish populations, inshore populations of many macroalgae have dramatically changed. We suggest that several large and abundant Bermuda macroalgal species recorded in the early 20th century appear to have been extirpated or are greatly diminished in sizes of individuals as well as population abundance, and propose that marine animal protections over the past 35 years are a possible reason for the changes we are presently observing.

The extent of grazing release from epiphytism forSargassum muticum(Phaeophyceae) within the invaded range

2009 ◽  
Vol 89 (2) ◽  
pp. 303-314 ◽  
Author(s):  
James A. Strong ◽  
Christine A. Maggs ◽  
Mark P. Johnson
Keyword(s):  
Northern Ireland ◽  
Native Species ◽  
Sargassum Muticum ◽  
Saccharina Latissima ◽  
Native Range ◽  
Epiphytic Algae ◽  
Macroalgal Species ◽  
Strangford Lough ◽  
Fucus Serratus ◽  
Japan And China

The overall biotic pressure on a newly introduced species may be less than that experienced within its native range, facilitating invasion. The brown algaSargassum muticum(Yendo) Fensholt is a conspicuous and successful invasive species originally from Japan and China. We comparedS. muticumand native macroalgae with respect to the biotic pressures of mesoherbivore grazing and ectocarpoid fouling. In Strangford Lough, Northern Ireland,S. muticumthalli were as heavily overgrown with seasonal blooms of epiphytic algae as native macroalgal species were. The herbivorous amphipodDexamine spinosawas much more abundant onS. muticumthan on any native macroalga. When cultured with this amphipod,S. muticumlost more tissue than three native macroalgae,Saccharina latissima(Linnaeus) Laneet al.,Halidrys siliquosa(Linnaeus) Lyngbye andFucus serratusLinnaeus.Sargassum muticumcultured with both ectocarpoid fouling and amphipods showed a severe impact, consistent with our previous findings of large declines in the density ofS. muticumobserved in the field during the peak of fouling. Despite being a recent introduction into the macroalgal community in Strangford Lough,S. muticumappears to be under biotic pressure at least equal to that on native species, suggesting that release from grazing and epiphytism does not contribute to the invasiveness of this species in Strangford Lough.

scholarly journals Interannual and Seasonal Changes in the Benthic Algae Flora of Coral Reef in Xiaodong Hai (Hainan Island, China)

2019 ◽  
Vol 7 (8) ◽  
pp. 243
Author(s):  
Eduard A. Titlyanov ◽  
Tamara V. Titlyanova ◽  
Anna V. Scriptsova ◽  
Yuxiao Ren ◽  
Xiubao Li ◽  
...  
Keyword(s):  
Species Diversity ◽  
Seasonal Changes ◽  
Dominant Species ◽  
Benthic Algae ◽  
Hainan Island ◽  
Algal Turf ◽  
Macroalgal Species ◽  
Antarctic Waters ◽  
Maximum Similarity ◽  
The Tropics

Intensive algal sampling conducted in 2016–2019 in the Xiaodong Hai locality (Hainan Island, South China Sea), yielded a total of 198 benthic macroalgal species and their taxonomic forms (54% reds, 20% browns and 26% greens) and 20 species of Cyanobacteria. The largest number of species belonged to the families Rhodomelaceae, Ceramiaceae and Corallinaceae (Rhodophyta); Sargassaceae and Dictyotaceae (Phaeophyceae); Cladophoraceae and Caulerpaceae (Chlorophyta). The majority (79%) of species inhabiting only the tropics or subtropics were previously recorded and 21% of the species were also inhabiting temperate latitudes. Cosmopolitan algae inhabiting from the tropics to Arctic or Antarctic waters amounted to 14%. The level of maximum similarity of macroalgal species diversity in different years was on average more than 70%, interannual species specificity was observed only in the group of dominating species in algal turf communities. The seasonal variability of floras was manifested in a significant decrease in species diversity from the dry season to the rainy and in the change of dominant species in algal turf communities.

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