scholarly journals Crude fucoidan content in two North Atlantic kelp species, Saccharina latissima and Laminaria digitata—seasonal variation and impact of environmental factors

2017 ◽  
Vol 29 (6) ◽  
pp. 3121-3137 ◽  
Author(s):  
Annette Bruhn ◽  
Tina Janicek ◽  
Dirk Manns ◽  
Mette Møller Nielsen ◽  
Thorsten Johannes Skovbjerg Balsby ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Environmental Factors ◽  
North Atlantic ◽  
Saccharina Latissima ◽  
Laminaria Digitata ◽  
Kelp Species ◽  
Crude Fucoidan

Correlation between Chlorophyll-a Concentration and Environmental Factors in Jihongtan Reservoir

2011 ◽  
Vol 356-360 ◽  
pp. 959-962
Author(s):  
Ji Ping Ma ◽  
Cui Jie Rui ◽  
Jian Hua Ge ◽  
Yu Hua Liu ◽  
Zhi Wen Song ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Environmental Factors ◽  
Dissolved Oxygen ◽  
Statistical Method ◽  
Chlorophyll A ◽  
Potassium Permanganate ◽  
Total Nitrogen ◽  
Average Concentration ◽  
Low Concentrations ◽  
High Concentrations

Based on the Jihogntan reservoir’s monitoring data from 2006 to 2009, eutrophication of Jihongtan reservoir was assessed. The result showed that the nutrition level of the Jihongtan reservoir was middle in recent years. The average concentration of chlorophyll-a(Chla) was higher in summer and autumn than in spring and winter. The correlation between concentration of Chla and some environmental factors was studied by statistical method, and seasonal variation of Chla and the extent of eutrophication were also analyzed. The results showed that the correlations between Chla and total nitrogen(TN), dissolved oxygen(DO) and transparency were significantly negative, and that between Chla and total phosphorus(TP), temperature(T) and potassium permanganate index(COD Mn) were significantly positive. The growth of phytoplankton was promoted by TP and TN at low concentrations, and inhibited by TN at high concentrations.

scholarly journals Heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations

2020 ◽  
Vol 10 (17) ◽  
pp. 9144-9177 ◽  
Author(s):  
Daniel Liesner ◽  
Louise Fouqueau ◽  
Myriam Valero ◽  
Michael Y. Roleda ◽  
Gareth A. Pearson ◽  
...  
Keyword(s):  
Population Genetics ◽  
Heat Stress ◽  
North Atlantic ◽  
Stress Responses ◽  
Laminaria Digitata

scholarly journals Methodology for quantitative determination of the carbohydrate composition of brown seaweeds (Laminariaceae)

RSC Advances ◽  
2014 ◽  
Vol 4 (49) ◽  
pp. 25736-25746 ◽  
Author(s):  
D. Manns ◽  
A. L. Deutschle ◽  
B. Saake ◽  
A. S. Meyer
Keyword(s):  
High Performance ◽  
Monosaccharide Composition ◽  
Anion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Saccharina Latissima ◽  
Carbohydrate Composition ◽  
Laminaria Digitata ◽  
Brown Seaweeds ◽  
Cellulase Treatment

The monosaccharide composition of four different samples of brown seaweeds Laminaria digitata and Saccharina latissima were compared by different high performance anion exchange chromatography (HPAEC) methods after different acid hydrolysis treatments or a cellulase treatment.

Compositional variations of brown seaweeds Laminaria digitata and Saccharina latissima in Danish waters

2017 ◽  
Vol 29 (3) ◽  
pp. 1493-1506 ◽  
Author(s):  
Dirk Manns ◽  
Mette Møller Nielsen ◽  
Annette Bruhn ◽  
Bodo Saake ◽  
Anne S. Meyer
Keyword(s):  
Saccharina Latissima ◽  
Laminaria Digitata ◽  
Brown Seaweeds ◽  
Compositional Variations

Kill-off Patterns in Sheep and Goats: the Mandibles from Aşvan Kale

1973 ◽  
Vol 23 ◽  
pp. 281-303 ◽  
Author(s):  
Sebastian Payne
Keyword(s):  
Seasonal Variation ◽  
Weight Gain ◽  
Environmental Factors ◽  
Age Groups ◽  
Archaeological Sites ◽  
Meat Production ◽  
Young Males ◽  
Animal Bones ◽  
Relative Value ◽  
Mandibular Teeth

Reports on animal bones from archaeological sites often include information about the “kill-off pattern” for each species – i.e. the relative representation of different age-groups in the sample. Osteologists believe that this information can be used as evidence for whether an animal was wild or domesticated, and, if domesticated, about the way in which man managed the animal. In this paper a method is described for recording such data for sheep and goat using mandibles and mandibular teeth; the analysis and interpretation of such data is discussed using excavated samples from Aşvan Kale.When people keep sheep or goats, the age at which the animals are slaughtered depends on a range of factors: on the relative value placed on the different products, on the characteristics of the stock, and on a range of environmental factors – in particular, seasonal variation in the availability of grazing and feed. If meat production is the aim, most of the young males are killed when they reach the optimum point in weight-gain, only a few being kept for breeding.

scholarly journals The seasonal variation in the cellulose content of the common Scottish Laminariaceae and Fucaceae

1950 ◽  
Vol 29 (2) ◽  
pp. 379-387 ◽  
Author(s):  
W. A. P. Black
Keyword(s):  
Seasonal Variation ◽  
Cellulose Content ◽  
Laminaria Digitata ◽  
Laminaria Saccharina ◽  
The Common ◽  
June July

Monthly samples of the common British Laminariaceae and Fucaceae taken during 1946 have been analysed for cellulose.The cellulose content has been found to increase with the depth of immersion of the weed.In the Laminariaceae, both in the stipe and frond it undergoes marked seasonal variation, exhibiting two maxima, March/April and September/October with a distinct minimum in June/July.In Laminaria cloustoni, in March, maxima of 5·7 (dry basis) occur in the fronds and 10·3% in the stipes with minima, in June, of 4·1 and 8·4% respectively. In Laminaria saccharina the cellulose content (dry basis) varies between 4–5% in the frond and 7–8% in the stipe and in Laminaria digitata between 3–5% in the frond and 6–8% in the stipe.

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