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opencc-by-4.0Nov 2020View details →

Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria: phylogenetic data

Alignments, trees and Biogeobears analyses related to the study: Leliaert F, Payo DA, Gurgel CFD, Schils T, Draisma SGA, Saunders GW, Kamiya M, Sherwood AR, Lin S-M, Huisman John M, Le Gall L, Anderson RJ, Bolton John J, Mattio L, Zubia M, Spokes T, Vieira C, Payri CE, Coppejans E, D'hondt S, Verbruggen H, De Clerck O. Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria. Journal of Biogeography. 2018;45(10):2299-313. doi:10.1111/jbi.13410 Abstract: Biogeographical processes underlying Indo-Pacific biodiversity patterns have been relatively well studied in marine shallow water invertebrates and fishes, but have been explored much less extensively in seaweeds, despite these organisms often displaying markedly different patterns. Using the marine red alga Portieria as a model, we aim to gain understanding of the evolutionary processes generating seaweed biogeographical patterns. Our results will be evaluated and compared with known patterns and processes in animals. Species diversity estimates were inferred using DNA-based species delimitation methods. Historical biogeographical patterns were inferred based on a six-gene time-calibrated phylogeny, distribution data of 802 specimens, and probabilistic modelling of geographic range evolution. The importance of geographic isolation for speciation was further evaluated by population genetic analyses at the intraspecific level. We delimited 92 candidate species, most with restricted distributions, suggesting low dispersal capacity. Highest species diversity was found in the Indo-Malay Archipelago (IMA). Our phylogeny indicates that Portieria originated during the late Cretaceous in the area that is now the Central Indo-Pacific. The biogeographical history of Portieria includes repeated dispersal events to peripheral regions, followed by long-term persistence and diversification of lineages within those regions, and limited dispersal back to the IMA. Our results suggest that the long geological history of the IMA played an important role in shaping Portieria diversity. High species richness in the IMA resulted from a combination of speciation at small spatial scales, possibly as a result of increased regional habitat diversity from the Eocene onwards, and species accumulation via dispersal and/or island integration through tectonic movement. Our results are consistent with the biodiversity feedback model, in which biodiversity hotspots act as both ‘centres of origin’ and ‘centres of accumulation’, and corroborate previous findings for invertebrates and fish that there is no single unifying model explaining the biological diversity within the IMA.

opencc-by-4.0Sep 2022View details →

Dimethylsulfoniopropionate-derived compound concentrations, volatile organic compound concentrations, and microorganism abundances around two corals and a seaweed in the reefs of Moorea (French Polynesia)

These data belong in the paper:  M. Masdeu-Navarro, J-F. Mangot, L. Xue, M. Cabrera-Brufau, S.G. Gardner, D.J. Kieber, J.M. González, R. Simó (2022). Spatial and diel patterns of volatile organic compounds, DMSP-derived compopunds and planktonic microorganisms around a tropical scleractinian coral colony. Frontiers in Marine Science. Concentrations of DMSP, acrylate, DMSO, DMS, DMDS, COS, CS2, isoprene, CH3I, CH2ClI, CH2Br2 and CHBr3 in seawater samples around colonies of the corals Acropora pulchra and Pocillopora sp., and the brown seaweed Turbinaria ornata. Abundances of high-DNA and low-DNA bacteria, Prochlorococcus, Synechococcus, picoeukaryotes and nanoeukaryotes in the same samples, as determined by flow cytometry. All samples were collected in April 2018 in the coral reefs of Mo'orea, French Polynesia.  The upper set of data contains concentrations at the distance of 0.5 cm from the coral polyps on the branch tips or verrucae, as well as from the seaweed thalli (samples IN), and 2 m away, downcurrent (samples OUT). The second set of data corresponds to A. pulchra only, and contains seawater samples IN, OUT and AL, the latter being sampled at 0.5 cm from the base of the dead branches colonized by a turf alga. IN, OUT and AL samples were collected over an entire diel cycle, every 6 hours for a period of 30 hours.

opencc-by-4.0Sep 2024View details →

Rumen_Microbial_Genomes_from_Cow_Fed_with_Red_Seaweed_Additives

This dataset represents the 3180 non-redundant species-level rumen microbial genomes established through the integration of MAGs recovered from the rumen of cows that were fed with red seaweed or not, publicly available rumen MAGs and isolate genomes from Hungate collection. In order to match those old genome names with the new genome names used in the manuscript, please refer to supplementary table 3.

opencc-by-4.0Apr 2023View details →

Seaweed C:N:P Global Dataset

Seaweed C:N:P ratios found in the peer-reviewed literature and previously unpublished data, current to 2022.  This is the accompanying dataset for “SEAWEED BIOGEOCHEMISTRY: GLOBAL ASSESSMENT OF C:N AND C:P RATIOS AND IMPLICATIONS FOR OCEAN AFFORESTATION” (Sheppard et al., in press).  Methods for collection of the dataset are found therein.   For queries, please contact dataset creator and caretaker, Emily Sheppard.  emily.sheppard@utas.edu.au

opencc-by-4.0Dec 2020View details →

Mesocoms investigation of seaweed fragment degradation and skinking rates

This dataset provides the results of a 35 day investigation of macroalgal fragment degradation and sinking rates, that took place in late summer and autumn of 2017, in Plymouth Marine Laboratory, UK. Specimens were collected by hand, from the shore at Rame Head (50°18' 41.9″ N 4°13' 15.9″ W). Sinking rates were estimated in a stationary seawater column in the laboratory, and are provided against fragment weight for 3 species of macroalgae, at the beginning and end of incubations. Experimental conditions are described.

dryad40/100

Data from: Deep-living and diverse Antarctic seaweeds are potentially important contributors to global carbon fixation

Global models predict that Antarctica has little suitable habitat for macroalgae and that Antarctic macroalgae therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), and here we report diverse and abundant macroalgal assemblages in un-navigated coastal habitats of the Ross Sea from 71.5˚ – 74.5˚ S. We found extensive macroalgal assemblages living at depths >70 m and specimens of crustose coralline algae as deep as 125 m. Using global light modelling and published photosynthetic rates we estimate that Antarctic macroalgae may contribute between 0.9 – 2.8 % of global macroalgal carbon fixation. Combined, this suggests that Antarctic macroalgae may be a greater contributor to global carbon fixation and possibly sequestration than previously thought. The vulnerability of these coastal environments to climate change, especially shifting sea ice extent and persistence, could influence Southern Ocean carbon fixation and rates of long-term sequestration.

opencc-zeroApr 2024View details →

Figure 5 in Seaweed resources of the Baltic Sea, Kattegat and German and Danish North Sea coasts

Figure 5: Different views of macroalgal blooms on German Baltic Sea coasts. (A) Beach wrack dominated by Ceramium virgatum, Hohwacht, 16.8.2012 (Photo © F. Weinberger). (B) Mat of Pylaiella littoralis covering a meadow of eelgrass, Mönckeberg, 15.5.2013 (Photo © C. Lieberum). (C) Beach wrack dominated by Cladophora sp., Stein, 12.4.2014 (Photo © M. Hammann). (D) Beach wrack composed of various red algae and eelgrass, Neukirchen, 30.4.2012 (Photo © F. Weinberger).

Figure 1 in Development and objectives of the PHYCOMORPH European Guidelines for the Sustainable Aquaculture of Seaweeds (PEGASUS)

Figure 1: Seaweed aquaculture to meet the goals of the European bioeconomy strategy (© Michele Barbier, based on EC documentation, 2018, source photos: iStock, © roxyminder #94394792; Fotolia_110024322_Subscription_XXL_© Countrypixel.jpg).

Figure 4 in Seaweed resources of the Baltic Sea, Kattegat and German and Danish North Sea coasts

Figure 4: Interannual variation (2006–2017) of the share of Furcellaria lumbricalis and Coccotylus truncatus in the loose-lying red algal community biomass (BM) in the Kassari Bay, West Estonian Archipelago Sea. Compiled results of annual monitorings 2006–2017; database of the Estonian Marine Institute.

Figure 1 in Seaweed resources of the Baltic Sea, Kattegat and German and Danish North Sea coasts

Figure 1: Types of coastlines, annual average sea surface salinities, and species numbers of algal macrophytes that have been recorded in different sea areas of the Baltic Sea and the German and Danish North Sea. Modified from Rönnbäck et al. (2007); species numbers are from HELCOM (2012) for the Baltic Sea and from Schories et al. (2009a,b) for the North Sea.

Figure 2 in Seaweed resources of the Baltic Sea, Kattegat and German and Danish North Sea coasts

Figure 2: Loose-lying Furcellaria lumbricalis-Coccotylus truncatus community in the Kassari Bay, West Estonian Archipelago Sea (Photo: K. Kaljurand).

Figure 3 in Seaweed resources of the Baltic Sea, Kattegat and German and Danish North Sea coasts

Figure 3: Interannual variation (1980–2017) of the total community biomass (BM), the total Furcellaria lumbricalis biomass and the area of the loose-lying red algal community in the Kassari Bay, West Estonian Archipelago Sea. Data after Martin et al. (2006a), updated with data of the Estonian Marine Institute on annual monitorings 2003–2017.

Figure 3 in Development and objectives of the PHYCOMORPH European Guidelines for the Sustainable Aquaculture of Seaweeds (PEGASUS)

Figure 3: Different European legislation with implications for seaweed aquaculture (© Michele Barbier).

Figure 2 in Development and objectives of the PHYCOMORPH European Guidelines for the Sustainable Aquaculture of Seaweeds (PEGASUS)

Figure 2: The development of sustainable seaweed aquaculture in Europe faces a number of challenges: market size, potential environmental impact, and preservation of local genetic diversity, the need to intensify research – both fundamental and applied, regulation of food quality, heavy metals or alien species, and cultivation constraints ranging from automation to issues of epiphytism (© Michele Barbier).

Figure 4 in Development and objectives of the PHYCOMORPH European Guidelines for the Sustainable Aquaculture of Seaweeds (PEGASUS)

Figure 4: Actions promoting the preservation of European marine biodiversity (© Michele Barbier, source photo © freepick.com).

opencc-by-4.0May 2022View details →

Cultivation of the seaweed Ulva spp. with effluent from a shrimp biofloc rearing system: different species and stocking density

This work evaluated the use of effluent from a marine shrimp biofloc rearing system to cultivate the green seaweed Ulva. First, the growth of two Ulva species, U. ohnoi and U. fasciata, was evaluated. Second, the best-performing species was cultivated under two different stocking densities (2 g L-1 and 4 g L-1) to evaluate both growth and nutrient uptake rates, considering total ammonia nitrogen, nitrate, and orthophosphate. In both cases, environmental variables were monitored, and the cultivation medium, consisting of 25% biofloc water and 75% seawater, was exchanged weekly. U. ohnoi grew significantly better, considering all variables evaluated (p<0.05). The smaller stocking density produced a higher specific growth rate (p<0.05). Yield, however, was unaffected (p≥0.05). No significant differences in the nutrient uptake rates were observed (p≥0.05). Overall, this work highlights the importance of species selection for seaweed destined for aquaculture. Additionally, it also optimizes the cultivation of seaweeds, specifically U. ohnoi, using effluent from biofloc systems.

opencc-by-4.0Sep 2022View details →

Mapping of Seaweed Aquaculture

In the Extraction results of seaweed aquaculture area.zip,we have placed the extraction results of the seaweed aquaculture area.They are raster data in tif format after geographic projection.In addition, we used the China Fisheries Statistical Yearbook data from 2016 to 2020 and placed it in the China Fisheries Statistical Yearbook From 2016 to 2020.zip.The spatial scope of the prohibited and restricted aquaculture areas of seaweed is presented at the end of  the Planning of Tidal Flats in Aquaculture Waters in Jiangsu Province (2020-2030).