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| Gómez, L.; Díaz, U.; Fernández, A.; Licea, Y.; Álvarez, I.. |
| Santiago de Cuba bay is an ecosystem eutrophic and vulnerable to FANs events. This work preset the results of monitoring during three year in eight stations located in the less polluted area of the bay, leading to the determination of the possible seasonal distribution and FANs frequency. 117 Phytoplankton species were identifying, which belong to 5 divisions; 28% of these species are reported as potentially toxic and/ or noxious. This zone of the bay classifies as politrophic, heterogeneous and dynamics. It highlights the cysts presence, as well as the occurrence of unialgal "blooms" of Gymnodinium catenatum and Cochlodinium polykrikoides, indicating the presence in the ecosystem of favorable conditions to HABs occurrence with negative impact on the... |
| Tipo: Conference Material |
Palavras-chave: Cysts; Eutrophication; Phytoplankton; Algal blooms; Cysts; Eutrophication; Phytoplankton; Algal blooms; Http://aims.fao.org/aos/agrovoc/c_34811; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_32367. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2251 |
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| Montoya, N.G.; Akselman, R.; Pájaro, M.; Perrotta, R.G.; Carreto, J.I.. |
| Spring blooms of the toxic dinoflagellate Alexandrium tamarense in the Argentine sea produce shellfish toxicity through the parallytic shellfish poison (PSP)accumulation. The trace PSP content in the mackerel Scomber japonicus liver was previously demonstrated in the Buenos Aires province coastal region (Carreto et al, 1993a),and a certain capability to accumulate the toxins was suggested.However, it was up to spring 1993 when a great number of PSP intoxicated mackerels where detected for the first time in a wideshelf area off the Buenos Aires province. This area, known as 'El Rincón' (39°00'-40°30'S), has become a growing importance mackerel fishing ground during the last few years. A high PSP concentration was determined in those mackerels, being the... |
| Tipo: Journal Contribution |
Palavras-chave: Toxicity; Algal blooms; Biological poisons; Stomach; Toxicity; Stomach; Algal blooms; Http://aims.fao.org/aos/agrovoc/c_7826; Http://aims.fao.org/aos/agrovoc/c_7422; Http://aims.fao.org/aos/agrovoc/c_32367. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/1939 |
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| Buriyo, A.S.; Mtolera, M.S.P.. |
| Seasonal effects on yield and quality of kappa-carrageenan from the red alga Hypnea musciformis were investigated in samples collected from natural populations in Oyster Bay, Dar es Salaam during June 1996–May 1997. The mean annual carrageenan yield, gel strength (after treatment with 0.1 M KCl) gelling and melting temperature (± standard deviation) were 25.24 ± 4.44 % dry weight, 171.72 ± 41.42 g/cm2, 54.66 ± 3.12 ºC and 68.62 ± 0.60 ºC, respectively. Carrageenan yield and quality (gel strength) during the SE and NE monsoon seasons were not significantly different (t = 0.55, p > 0.05) and (t = 1.91, p > 0.05), respectively. The reported carrageenan yield and gel strength values were, respectively, about 50% and 40% those of carrageenan from... |
| Tipo: Journal Contribution |
Palavras-chave: Mariculture; Algal blooms; Temperature; Algal blooms; Http://aims.fao.org/aos/agrovoc/c_32367. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1089 |
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| Ibrahim, A.M.M.. |
| The most common type of harmful algal blooms (HABs) is referred to as a "Red Tide" because the bloom discolors the water, making it appear red. However, HABs may also be yellow, orange, brown, green, white, or pink, depending on which one of the three primary types of phytoplankton are responsible for the problem; dinoflagellate, diatoms, or bluegreen algae. Of the more than 4,400 marine phytoplankton species, only 50 to 60 are believed to be toxic. Many HABs (harmful algal blooms), produce vividly colored blooms of cells that accumulate on surface water. These high biomass blooms can cause hypoxia, can contribute to toxicity of fish and shellfish, and can cause other environmental problems. They occur in waters all over the globe, and have been called red... |
| Tipo: Journal Contribution |
Palavras-chave: A Review; Algal blooms; Algal blooms; Http://aims.fao.org/aos/agrovoc/c_32367. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1889 |
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