TABLE 2 - uploaded by kateřina sukačová
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Source publication
The response of the taxonomic structure of algal assemblages, several trophic and saprobic indices and taxa richness to environmental gradients was investigated in small suburban streams with high organic and trophic load. Gradients of nutrient richness, electrical conductivity and substratum (a gradient from muddy to stony substratum) were conside...
Contexts in source publication
Context 1
... total, more than 120 taxa of cyanobacteria and al- gae were identified (for the number of taxa in each taxo- nomic group collected at each site see Table 2). However, the number of taxa found at individual sites ranged between 7 and 40 (median = 20). ...
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Citations
... Red algal Gracilaria sp. is preferred for agar -agar production due to a high growth rate and easy culturing [1][2][3]. The growth rate and chemical composition of Gracilaria is influenced by the culture medium [4,5], epiphytes [6,7], culture techniques, water quality (temperature, salinity, and pH), light intensity, water exchange and mixing rate [8][9][10][11][12][13]. Composition of the culture medium influences pigment composition, protein contents and agar amounts in Gracilaria [1,11,14]. ...
In this study, the effect of an agricultural organic fertilizer on growth, pigment, proximate and agar content of Gracilaria verrucosa (Hudson) Papenfuss was studied. The highest daily growth rate was determined in the agricultural organic fertilizer group as 4.0 % day -1. Therefore, the growth of G. verrucosa with agricultural organic fertilizer and Conway's medium showed no significant differences (p>0.05). The maximum total chlorophyll content in the agricultural organic fertilizer was higher (20.7±1.5 μg g -1) than in Conway's medium (7.0±0.2 μg g -1). The maximum protein (42.6 % dw) and lipid contents (7.6±0.1 % dw) were achieved in the agricultural organic fertilizer group. The significant differences were determined between the groups (p<0.05). The highest carbohydrate (58.1 ±0.4 % dw), ash (12.5&plusum;1.0 % dw) and agar (21.9±0.3 % dw) contents were found in Conway's medium. There was a statistically significant difference between the experimental groups (p<0.05). Consequently, it was seen that the agricultural organic fertilizer is suitable for G. verrucosa culture to produce human and animal food in order to decrease the production cost, but it is unsuitable for agar production.
