Journal articles: 'Marine algae – South Africa'

1

Norris, R. E., and M. E. Aken. "Marine benthic algae new to South Africa." South African Journal of Botany 51, no. 1 (February 1985): 55–65. http://dx.doi.org/10.1016/s0254-6299(16)31702-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Norris, R. E. "Some unusual marine red algae (Rhodophyta) from South Africa." Phycologia 30, no. 6 (November 1991): 582–96. http://dx.doi.org/10.2216/i0031-8884-30-6-582.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Adams, Luther A., Gavin W. Maneveldt, Andrew Green, Natasha Karenyi, Denham Parker, Toufiek Samaai, and Sven Kerwath. "Rhodolith Bed Discovered off the South African Coast." Diversity 12, no. 4 (March 27, 2020): 125. http://dx.doi.org/10.3390/d12040125.

Full text

Abstract:

Rhodolith beds have not previously been recorded in South Africa. A multidisciplinary research effort used remote sampling tools to survey the historically unexplored continental shelf off the Eastern Cape coast of South Africa. A rhodolith bed, bearing both living and dead non-geniculate coralline red algae, was discovered in the 30–65 m depth range off the Kei River mouth in the newly proclaimed Amathole Offshore Marine Protected Area. Some of the rhodolith forming coralline algal specimens were identified as belonging to at least three genera based on their morphology and anatomy, namely, Lithophyllum, Lithothamnion and a non-descript genus. Rhodolith mean mass and diameter were 44.85 g ± 34.22 g and 41.28 mm ± 10.67 mm (N = 13), respectively. Remotely operated vehicle (ROV) imagery revealed a suite of epibenthic red macroalgae associated with the rhodolith bed. Taxonomy, vertical structure and distribution of rhodoliths in South Africa require further investigation.

APA, Harvard, Vancouver, ISO, and other styles

4

Afolayan, Anthonia F., John J. Bolton, Carmen A. Lategan, Peter J. Smith, and Denzil R. Beukes. "Fucoxanthin, Tetraprenylated Toluquinone and Toluhydroquinone Metabolites from Sargassum heterophyllum Inhibit the in vitro Growth of the Malaria Parasite Plasmodium falciparum." Zeitschrift für Naturforschung C 63, no. 11-12 (December 1, 2008): 848–52. http://dx.doi.org/10.1515/znc-2008-11-1211.

Full text

Abstract:

Abstract In the course of our search for antimalarial leads from marine algae, four metabolites, sargaquinoic acid, sargahydroquinoic acid, sargaquinal and fucoxanthin, were isolated from the South African alga Sargassum heterophyllum. Fucoxanthin and sargaquinal showed good antiplasmodial activity toward a chloroquine-sensitive strain (D10) of Plasmodium falciparum (IC50 1.5 and 2.0 μm, respectively), while sargaquinoic acid and sargahydroquinoic acid were only moderately active (IC50 12.0 and 15.2 μm, respectively).

APA, Harvard, Vancouver, ISO, and other styles

5

Millar, AJK. "Marine red algae of the Coffs Harbour region, northern New South Wales." Australian Systematic Botany 3, no. 3 (1990): 293. http://dx.doi.org/10.1071/sb9900293.

Full text

Abstract:

The marine benthic red algae of the Coffs Harbour region are described and illustrated in detail. The survey constitutes the first ever detailed descriptive and illustrative mainland regional monograph of any area along the entire eastern Australian seaboard. Collections made intertidally and to depths of 20 m have included 119 species in 74 genera, 26 families, and 8 orders of Rhodophyta, of which 54 (45%) were previously unrecorded from eastern Australia, 22 (18%) are new records for the whole of Australia (16 being new Southern Hemisphere records), 1 (Dictyothumnion) constitutes a new genus, and 16 (13%) are new species in the genera Gracilaria, Curdiea, Botryocladia, Dictyothamnion, Antithamnion, Ceramium, Callithumnion, Anotrichium, Nitophyllum, Phycodrys, Apoglossum, Dasya, Fernandosiphonia, and Herposiphonia. Also included are major Australian revisions of the genera Martensia and Nitophyllum, and six new combinations are proposed (Chondria infestans, Curdiea angustata, Dasya pilosa, Haraldiophyllum sinuosum, Myriogramme pulchellum, and Stenograrnme phyllophoroides). The Coffs Harbour flora, although related to the north-eastern and, to a lesser degree, southern Australian floras, has a number of species previously known only from much more remote localities, such as Japan (6 species), California (4 species), New Zealand (3 species), India (2 species), South America (2 species), the Galapagos Islands (1 species), China (1 species), South Africa (1 species), and the Mediterranean (1 species). Twelve of the 22 species newly recorded for Australia show a definite western Pacific distribution, a region with which the overall Coffs Harbour flora has strong affinities.

APA, Harvard, Vancouver, ISO, and other styles

6

Hiller, Norton, and Robert W. Gess. "Marine algal remains from the Upper Devonian of South Africa." Review of Palaeobotany and Palynology 91, no. 1-4 (March 1996): 143–49. http://dx.doi.org/10.1016/0034-6667(95)00062-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Puckree-Padua, Courtney A., Paul W. Gabrielson, and Gavin W. Maneveldt. "DNA sequencing reveals three new species of Chamberlainium (Corallinales, Rhodophyta) from South Africa, all formerly passing under Spongites yendoi." Botanica Marina 64, no. 1 (January 6, 2021): 19–40. http://dx.doi.org/10.1515/bot-2020-0074.

Full text

Abstract:

Abstract Three new non-geniculate coralline algal species from South Africa are described that were passing under the misapplied name, Spongites yendoi. Based on plastid encoded DNA sequences from psbA and rbcL markers, these species belong in the subfamily Chamberlainoideae. The DNA sequences, supported by the morpho-anatomical character of tetrasporangial conceptacle roof development, placed all three species in the genus Chamberlainium and not Pneophyllum, the only other genus in Chamberlainoideae. In addition to the diagnostic DNA sequences, Chamberlainium capense sp. nov., C. glebosum sp. nov. and Chamberlainium occidentale sp. nov. may be distinguished by a combination of habit, habitat, geographic distribution, and several morpho-anatomical features. Biogeographically all three species are found in the Benguela Marine Province of South Africa, with C. occidentale being the most widespread. Chamberlainium glebosum also has a wide, but disjunct distribution and C. capense is another South African endemic non-geniculate coralline, whose range is restricted to a 43 km stretch of coastline. Thus far, DNA sequences from type specimens of non-geniculate corallines show that only those species whose type localities are from South Africa are correctly applied; all other non-geniculate coralline names are likely misapplied in South Africa.

APA, Harvard, Vancouver, ISO, and other styles

8

Tamele, Isidro, Marisa Silva, and Vitor Vasconcelos. "The Incidence of Marine Toxins and the Associated Seafood Poisoning Episodes in the African Countries of the Indian Ocean and the Red Sea." Toxins 11, no. 1 (January 21, 2019): 58. http://dx.doi.org/10.3390/toxins11010058.

Full text

Abstract:

The occurrence of Harmful Algal Blooms (HABs) and bacteria can be one of the great threats to public health due to their ability to produce marine toxins (MTs). The most reported MTs include paralytic shellfish toxins (PSTs), amnesic shellfish toxins (ASTs), diarrheic shellfish toxins (DSTs), cyclic imines (CIs), ciguatoxins (CTXs), azaspiracids (AZTs), palytoxin (PlTXs), tetrodotoxins (TTXs) and their analogs, some of them leading to fatal outcomes. MTs have been reported in several marine organisms causing human poisoning incidents since these organisms constitute the food basis of coastal human populations. In African countries of the Indian Ocean and the Red Sea, to date, only South Africa has a specific monitoring program for MTs and some other countries count only with respect to centers of seafood poisoning control. Therefore, the aim of this review is to evaluate the occurrence of MTs and associated poisoning episodes as a contribution to public health and monitoring programs as an MT risk assessment tool for this geographic region.

APA, Harvard, Vancouver, ISO, and other styles

9

S.S, Sumayya, Sreelekshmi S.G, and Murugan K. "CULTIVATION AND ECONOMICAL PERSPECTIVES OF GRACILLARIA: MARINE SEAWEED." Kongunadu Research Journal 4, no. 2 (December 30, 2017): 73–79. http://dx.doi.org/10.26524/krj206.

Full text

Abstract:

For decades, seaweed has been of biological, industrial, and pharmaceutical importance. Because of their nutraceutical potential, seaweed has been used as a food throughout Asia. Traditional Chinese medicine used aqueous hot extracts of certain seaweeds in the treatment of cancer. Further, the Japanese and Chinesecultures have used seaweeds to treat goiter and other glandular problems since 300 BC. The Romans used seaweeds in the treatment of wounds, burns, and rashes. The Celts noted that ordinary seaweed contracted as it dried and then expanded with moisture. In Scotland during the 18th century, physicians used dried seaweed stem to successfully drain abdominal wall abscesses. They also inserted seaweed into the cervix in an attempt to treat dysmenorrhea. Many reports outline the use of seaweed to induce abortion. Seaweed was employed intravaginally for ripening of the cervix and was used rectally for strictures. In this juncture, culture and therapeutic potential of Gracilaria was reviewed. Gracilaria is a genus of red algae notable for its economic importance as an agarophyte, as well as its use as a food for humans and various species of shellfish. Various species within the genus are cultivated among Asia, South America, Africa and Oceania. Gracilaria is used as a food in Japanese, Hawaiian, and Filipino cuisine. In Japanese cuisine, it is called ogonori or ogo. In thePhilippines, it is called gulaman and used to make gelatin. In Jamaica, it is known as Irish moss. The moisture content is 12% and protein is 8%. The species are used by local people as salad, preparation of various curries and industrially many by products are synthesized from this sea weed. Medicinally as microbicidal, antiinflammatory, antimetastatic and immuno modulatory potential.

APA, Harvard, Vancouver, ISO, and other styles

10

Lukyanenko, Oleksandr. "GLOBAL MOTIVATIONS AND AQUACULTURE DEVELOPMENT TRENDS." Green, Blue & Digital Economy Journal 1, no. 2 (December 3, 2020): 132–39. http://dx.doi.org/10.30525/2661-5169/2020-2-21.

Full text

Abstract:

The natural and geographical, resource, economic and environmental conditions, global motivations, key trends, specific features of formation and prospects for aquaculture development are researched. It is emphasized that fishing and aquaculture have a special place in solving the global food problem, while significantly affecting the aquatic environment. The interdisciplinary nature of scientific research in the conceptual format of fisheries economics, management of marine ecosystems, aquaculture, green and blue technologies are illustrated. The positioning of fisheries and aquaculture in the format of global problems of mankind and sustainable development in terms of environmentally irresponsible use of bioresources, especially the World Ocean is made, attention is focused on the potentially catastrophic consequences of its pollution, the problem of restoring fish stocks based on climate change is emphasized. The economic, ecological and social expediency of accelerated development of aquaculture, its institutional, functional and organizational-regulatory separation in the structure of global fisheries is substantiated, considering its complexity and inter-sectoral diversification, the author's model of aquaculture is proposed with classification identification of its categories (internal natural, artificial and combined reservoirs and marine, coastal and combined areas), types (with and without feed), species (bony fish, crustaceans, mollusks, other aquatic animals, algae), and consumer products (food, non-food, dual use). The scale, structure and dynamics of aquaculture development have been identified and assessed, and its growing importance in global fisheries has been confirmed. The analysis of the regional structure of aquaculture production by continents is carried out, its distribution by categories and species in Asia, North and South America, Europe, Africa and Oceania is characterized. The special leadership status of China in the global production of aquaculture products is illustrated. It is confirmed that aquaculture is becoming the main source of human fish consumption. The key trends in the development of aquaculture in the European Union have been identified and assessed. The special features of the formation of the relevant market are described. In addition, it has been demonstrated that the scale of aquaculture production only in Norway is comparable to the aggregate indicator of the EU countries. The volumes and structure of aquaculture financing from the budget of the European Maritime and Fisheries Fund are analyzed. Using Spearman's correlation ranks, the peculiarities of aquaculture consumption in terms of volume and price characteristics are studied. The conclusions of the research are substantiated, which confirm the hypothesis of perspective prospects of aquaculture advanced development using the modern innovative technologies and the effective system of its global regulation.

APA, Harvard, Vancouver, ISO, and other styles

11

Lategan, Carmen, Tracy Kellerman, Anthonia F. Afolayan, Maryssa G. Mann, Edith M. Antunes, Peter J. Smith, John J. Bolton, and Denzil R. Beukes. "Antiplasmodial and antimicrobial activities of South African marine algal extracts." Pharmaceutical Biology 47, no. 5 (May 2009): 408–13. http://dx.doi.org/10.1080/13880200902758832.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Millar, Alan J. K. "Marine benthic algae of Norfolk Island, South Pacific." Australian Systematic Botany 12, no. 4 (1999): 479. http://dx.doi.org/10.1071/sb98004.

Full text

Abstract:

The marine benthic algae of Norfolk Island are documented and 60 of the 236 species are illustrated. All records are fully referenced, and type localities, local distribution and notes on taxonomic and biogeographic affinities of each species are given. Of the 236 taxa, 41 species are Chlorophyta, 41 are Phaeophyta and the remainder (154) are Rhodophyta. Apart from several undescribed taxa, none is endemic to the island, although Solieria anastomosa and Dasya fruticulosa are apparently restricted to Norfolk and Lord Howe Island, the two islands presently sharing 106 species (almost half the Norfolk marine flora and one-third that of Lord Howe). Although there are some species for which Norfolk Island represents a major range extension into or within the Pacific (Dasycladus ramosus, Halicoryne wrightii, Anotrichium anthericephalum, Herposiphonia arcuata and Polysiphonia japonica), a con- siderable number of the species are shared with the Great Barrier Reef and the New South Wales coastline as well as Lord Howe Island. Major northern range extensions are recorded for the large temperate brown alga Ecklonia radiata, and possibly Phyllospora comosa and Durvillaea antarctica, although the island more typically hosts numerous tropical algae such as Trichogloea requienii and members of the green algal order Dasycladales including Halicoryne wrightii, Bornetella nitida and Neomeris annulata. As a consequence of this survey, the two rhodymeniacean species Chrysymenia ornata and C. digitata are considered to be conspecific.

APA, Harvard, Vancouver, ISO, and other styles

13

Taylor, Jonathan C. "Non-Marine Algae of Africa. A Bibliography (1799–2010)." African Journal of Aquatic Science 36, no. 2 (August 2011): 221. http://dx.doi.org/10.2989/16085914.2011.559719.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Tsiamis, Konstantinos, Akira F. Peters, Dawn M. Shewring, Aldo O. Asensi, Pieter Van West, and Frithjof C. Küpper. "Marine benthic algal flora of Ascension Island, South Atlantic." Journal of the Marine Biological Association of the United Kingdom 97, no. 4 (August 27, 2014): 681–88. http://dx.doi.org/10.1017/s0025315414000952.

Full text

Abstract:

This paper provides a comprehensive checklist of the marine benthic macroalgal flora of Ascension Island (tropical South Atlantic Ocean), based on both new collections and previous literature. 82 marine macroalgae were identified from our work, including 18 green algae (Ulvophyceae), 15 brown algae (Phaeophyceae) and 49 red algae (Rhodophyta). Among our collections, 38 species and infraspecific taxa are reported for the first time from Ascension Island, including seven green, three brown and 28 red macroalgae, raising the total number of seaweeds recorded in Ascension so far to 112 taxa in species and infraspecific level. No seagrasses have been recorded at Ascension Island.

APA, Harvard, Vancouver, ISO, and other styles

15

Raghukumar, C. "Fungal parasites of marine algae from Mandapam (South India)." Diseases of Aquatic Organisms 3 (1987): 137–45. http://dx.doi.org/10.3354/dao003137.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Feng, Qi, Yi-Ming Gong, and Robert Riding. "Mid-late Devonian calcified marine algae and cyanobacteria, South China." Journal of Paleontology 84, no. 4 (July 2010): 569–87. http://dx.doi.org/10.1017/s0022336000058340.

Full text

Abstract:

Givetian, Frasnian and Famennian limestones from southern China contain microfossils generally regarded as calcified algae and cyanobacteria. These are present in 61 out of 253 sampled horizons in four sections from three widely spaced localities in Guangxi and southern Guizhou. Three of the sections sampled are Givetian-Frasnian-Famennian; one section is Frasnian-Famennian. They include reef and non-reef carbonates of shallow marine platform facies. The following taxa are identified with differing degrees of confidence, and placed in algae, cyanobacteria or microproblematica. Algae: Halysis, ‘solenoporaceans’, Vermiporella. Cyanobacteria: Bevocastria, Girvanella, Hedstroemia, Subtifloria. Microproblematica: ?Chabakovia, Garwoodia, ?Issinella, Izhella, Paraepiphyton, Rothpletzella, Shuguria, ?Stenophycus, Tharama, Wetheredella. As a whole, the abundance of algae, cyanobacteria and microproblematica increases by 34% from Givetian to Frasnian, and declines by 63% in the Famennian. This secular pattern of marked Famennian decrease does not support recognition of them as “disaster forms” in the immediate aftermath of late Frasnian extinction. Nonetheless, their survival into the Famennian could indicate tolerance of environmental stress, independence of changes in food supply, morphologic plasticity, and ability to occupy a range of habitats and depths. Uncertainties concerning the affinities of the problematic taxa hinder assessment of their significance.

APA, Harvard, Vancouver, ISO, and other styles

17

Taljaard, Susan, and Willem A. M. Botes. "Marine water quality management in South Africa." Water Science and Technology 32, no. 2 (July 1, 1995): 281–88. http://dx.doi.org/10.2166/wst.1995.0118.

Full text

Abstract:

In South Africa the ultimate goal in water quality management is to keep the water resources suitable for all “beneficial uses”. Beneficial uses provides a basis for the derivation of water quality guidelines, which, for South Africa, are defined in Water quality guidelines for the South African coastal zone (DWAF, 1991). The CSIR has developed a practical approach to marine water quality management, taking into account international trends and local experience, which can be applied to any coastal development with potential influence on water quality. The management plan is divided into three logical components, i.e. • site-specific statutory requirements and environmental objectives; • system design with specific reference to influences on water quality; and • monitoring programmes. Within this management approach water quality issues are addressed in a holistic manner, through focused procedures and clear identification of information requirements. This paper describes the procedures and information requirements within each component of the water quality management plan, with specific reference to marine disposal systems. Ideally, the management plan should be implemented from the feasibility and conceptual design phase of a development and the timing of the different procedures within the development process are therefore also highlighted. However, the logical lay-out of procedures allows for easy initiation (even to existing disposal system) at any stage of development.

APA, Harvard, Vancouver, ISO, and other styles

18

Boonzaaier-Davids, MK, WK Florence, and MJ Gibbons. "Zoogeography of marine Bryozoa around South Africa." African Journal of Marine Science 42, no. 2 (April 2, 2020): 185–98. http://dx.doi.org/10.2989/1814232x.2020.1765870.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Singh, SP, JC Groeneveld, J. Huggett, D. Naidoo, R. Cedras, and S. Willows-Munro. "Metabarcoding of marine zooplankton in South Africa." African Journal of Marine Science 43, no. 2 (April 3, 2021): 147–59. http://dx.doi.org/10.2989/1814232x.2021.1919759.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Feng, Qi, Yi-Ming Gong, and Robert Riding. "Mid-Late Devonian Calcified Marine Algae and Cyanobacteria, South China." Journal of Paleontology 84, no. 4 (July 2010): 569–87. http://dx.doi.org/10.1666/09-108.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Norris, R. E. "Six marine macroalgal genera new to South Africa." South African Journal of Botany 58, no. 1 (February 1992): 2–12. http://dx.doi.org/10.1016/s0254-6299(16)30889-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Verster, Carina, Karin Minnaar, and Hindrik Bouwman. "Marine and freshwater microplastic research in South Africa." Integrated Environmental Assessment and Management 13, no. 3 (April 25, 2017): 533–35. http://dx.doi.org/10.1002/ieam.1900.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Woelkerling, Wm J. "The Marine Algae and Coastal Environment of Tropical West Africa (Second Edition)." Phycologia 27, no. 4 (December 1988): 551. http://dx.doi.org/10.2216/i0031-8884-27-4-551.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Mayfield, Stephen, George M. Branch, and Andrew C. Cockcroft. "Role and efficacy of marine protected areas for the South African rock lobster, Jasus lalandii." Marine and Freshwater Research 56, no. 6 (2005): 913. http://dx.doi.org/10.1071/mf05060.

Full text

Abstract:

Protected areas for the South African rock lobster, Jasus lalandii, were sampled by using divers, traps and ringnets at sites within and adjacent to four protected areas (St Helena Bay, Saldanha Bay and Table Bay rock lobster sanctuaries and the Betty’s Bay marine reserve), over two years. Virtually no rock lobsters were found in St Helena Bay sanctuary, probably because of periodic harmful algal blooms. Abundance was greater in Saldanha Bay sanctuary than in adjacent fished areas, but only once in two years. Sizes were, however, larger in this sanctuary than the fished areas. By an order of magnitude, fewer and smaller rock lobsters were caught within the Table Bay sanctuary than in adjacent areas. Only at Betty’s Bay were rock lobster sizes and abundance consistently greater inside than outside the reserve. Fecundity was similar among sites, with females in protected areas contributing no more to egg production than would be expected by the proportional area occupied by protected areas. Rock lobsters do benefit from protection in Betty’s Bay reserve, but the west coast sanctuaries appear poorly located and seemingly contain large areas of unsuitable substrate. They clearly need relocation to be effective.

APA, Harvard, Vancouver, ISO, and other styles

25

Millar, Alan J. K. "New records of marine benthic algae from New South Wales, eastern Australia." Phycological Research 52, no. 2 (June 2004): 117–28. http://dx.doi.org/10.1111/j.1440-1835.2004.tb00320.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Toms, G. "Marine Outfall Studies in Development Areas of South Africa." Water Science and Technology 18, no. 11 (November 1, 1986): 11–23. http://dx.doi.org/10.2166/wst.1986.0138.

Full text

Abstract:

A recent policy of decentralizing growth in South Africa has led to the designation of neu coastal development areas. Growth of such areas, stimulated by the attraction of industries should be accompanied by a careful assessment of possible associated marine pollution problems. In particular, the disposal of industrial and/or domestic effluents to sea may initially appear an attractive option to planners and developers. Consequently the investigation of the feasibility of the marine disposal option is an essential component of the planning process. An on-going series of such studies in nominated priority coastal development areas has been undertaken by the National Research Institute for Oceanology since 1980. This paper reviews the progress of these studies and outlines the preliminary engineering and oceanographic investigations. Two case studies, Saldanha and Richards Bay, are reviewed. In the latter case, some interesting design aspects of the recently completed outfall are discussed.

APA, Harvard, Vancouver, ISO, and other styles

27

Silva, Simone M. F., and Richard N. Pienaar. "Marine Cyanophytes from the Western Cape, South Africa: Oscillatoriales." South African Journal of Botany 65, no. 1 (February 1999): 1–22. http://dx.doi.org/10.1016/s0254-6299(15)30936-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Silva, Simone M. F., and Richard N. Pienaar. "Marine Cyanophytes from the Western Cape, South Africa: Chroococcales." South African Journal of Botany 65, no. 1 (February 1999): 32–49. http://dx.doi.org/10.1016/s0254-6299(15)30938-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Botes, Willem A. M., and J. F. Kapp. "Dilution studies on three marine outfalls in South Africa." Water Science and Technology 32, no. 2 (July 1, 1995): 297–304. http://dx.doi.org/10.2166/wst.1995.0120.

Full text

Abstract:

Field dilution studies were conducted on three “deep” water marine outfalls located along the South African coast to establish the comparibility of actual achievable initial dilutions against the theoretical predicted values and, where appropriate, to make recommendations regarding the applicability of the different prediction techniques in the design of future outfalls. The physical processes along the 3000 km long coastline of South Africa are diverse, ranging from dynamic sub-tropical waters on the east coast to cold, stratified stagnant conditions on the west coast. Fourteen existing offshore marine outfalls serve medium to large industries and various local authorities (domestic effluent). For this investigation three outfalls were selected to represent the range of outfall types as well as the diversity of the physical conditions of the South African coastline. The predicted dilutions, using various approaches, compared well with the measured dilutions. It was found that the application of more “simple” prediction techniques (using average current velocities and ambient densities) may be more practical, ensuring a conservative approach, in pre-feasibility studies, compared to the more detailed prediction models, which uses accurate field data (stratification and current profiles), when extensive field data is not readily available.

APA, Harvard, Vancouver, ISO, and other styles

30

Kilburn, R. N. "A BRIEF HISTORY OF MARINE MALACOLOGY IN SOUTH AFRICA." Transactions of the Royal Society of South Africa 54, no. 1 (January 1999): 31–41. http://dx.doi.org/10.1080/00359199909520402.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Robinson, TB, CL Griffiths, CD McQuaid, and M. Rius. "Marine alien species of South Africa — status and impacts." African Journal of Marine Science 27, no. 1 (January 2005): 297–306. http://dx.doi.org/10.2989/18142320509504088.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Moloney, C. L., S. T. Fennessy, M. J. Gibbons, A. Roychoudhury, F. A. Shillington, B. P. von der Heyden, and K. Watermeyer. "Reviewing evidence of marine ecosystem change off South Africa." African Journal of Marine Science 35, no. 3 (September 2013): 427–48. http://dx.doi.org/10.2989/1814232x.2013.836135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Maneveldt, G. W., Y. M. Chamberlain, and D. W. Keats. "Keys to the non-geniculate coralline algae (Corallinales, Rhodophyta) of South Africa." South African Journal of Botany 73, no. 2 (April 2007): 299. http://dx.doi.org/10.1016/j.sajb.2007.02.079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Witbooi, E. "Current Legal Development: South Africa: Subsistence Fishing in South Africa: Implementation of the Marine Living Resources Act." International Journal of Marine and Coastal Law 17, no. 3 (September 1, 2002): 431–40. http://dx.doi.org/10.1163/157180802401077108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Gibbons, Mark J., Steve H. D. Haddock, George I. Matsumoto, and Craig Foster. "Records of ctenophores from South Africa." PeerJ 9 (January 12, 2021): e10697. http://dx.doi.org/10.7717/peerj.10697.

Full text

Abstract:

Although ctenophores can be conspicuous components of the plankton in coastal marine ecosystems, only six species have been formally described from around South Africa. Using photographs from local community scientists, we add a further three species (Cestum veneris, Beroe forskalii?, Ocyropsis maculata?) and six morphospecies to the regional fauna. These additions suggest that South Africa has a ctenophore fauna that is amongst the most diverse, globally; an observation in agreement with information from other taxa. Tips on how community scientists can improve their photographic contributions to understanding ctenophore diversity are provided.

APA, Harvard, Vancouver, ISO, and other styles

36

Nacorda, Hildie M. E., Nero M. Austero, Cesar R. Pagdilao, Koh Siang Tan, and Rhodora V. Azanza. "Marine Biofouling Communities of Manila South Harbor, Philippines." ASEAN Journal on Science and Technology for Development 35, no. 1-2 (July 17, 2020): 115–23. http://dx.doi.org/10.29037/ajstd.481.

Full text

Abstract:

An immersion experiment was conducted in the Manila South Harbor to document the development of sessile biofouling communities. Test panels were submerged below the sea surface in April 2012 for short- (one and three months) and long-term (one year) exposures in seawater, then foauling types and occurrences were scored based on digital images of panel surfaces. The short-term immersed panels were found with significant cover of soft fouling (undet.), slime, and the invasive Balanus (=Amphibalanus) amphitrite. These also filled the long-term immersed panels, although some fell off due to mortality from crude oil smothering. Perna viridis, native but also invasive, successfully established and then dominated the fouling cover by the 12th month (April 2013). Oysters, bryozoans (Watersipora sp.), colonial tunicates, polychaetes (Hydroides sp.), and green algae contributed minor to fouling cover. These fouling communities in the Manila South Harbor consisted of organisms that were cosmopolitan in port waters of SE Asia. A similar study must be carried out in other major ports of the country and then compared.

APA, Harvard, Vancouver, ISO, and other styles

37

Millar, AJK, and GT Kraft. "Catalogue of marine brown algae (Phaeophyta) of New South Wales, including Lord Howe Island, south-western Pacific." Australian Systematic Botany 7, no. 1 (1994): 1. http://dx.doi.org/10.1071/sb9940001.

Full text

Abstract:

This catalogue lists 139 species (in 12 orders, 26 families and 63 genera) of brown algae from New South Wales and Lord Howe Island. More than half (71) are endemic to Australia, with the remainder being very widely distributed (e.g. Europe, the Americas and Asia); 28 species have New South Wales type localities (14 from the mainland and 14 from Lord Howe Island). As a result of extensive searching of archival records, the exact locality of many 'Nov. Holl.' types is deduced to be the Sydney region of New South Wales. Four genera (Austronereia, Nemacystis, Nereia and Tomaculopsis) and 10 species are newly recorded, six species being new to the Australian continent. The largest genus represented is Sargassum, for which 37 species have been recorded, including 10 based on local types. Eleven of these Sargassum records are eliminated, the remaining 26 are in urgent need of regional monographic treatment. Eclipsed only by the Fucales (39 species in 9 genera), the order Dictyotales with 36 species in 13 genera, is the dominant group in terms of cover and possibly biomass along the mainland and at Lord Howe Island from low intertidal habitats to to depths of at least 35 m. In many areas of the seabed, brown algae and the cmstose corallines seem to be especially resilient to grazing by the sea-urchin Centrostephanis rodgersii which is presently besieging this coast.

APA, Harvard, Vancouver, ISO, and other styles

38

Griffiths, C. L., A. Mead, and T. B. Robinson. "A Brief History of Marine Bio-Invasions in South Africa." African Zoology 44, no. 2 (October 2009): 241–47. http://dx.doi.org/10.3377/004.044.0212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wepener, V., and N. Degger. "Status of marine pollution research in South Africa (1960–present)." Marine Pollution Bulletin 64, no. 7 (July 2012): 1508–12. http://dx.doi.org/10.1016/j.marpolbul.2012.05.037.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

DAY, JENNY A. "Marine and estuarine studies in South Africa: an historical perspective." Transactions of the Royal Society of South Africa 55, no. 2 (January 2000): 101–5. http://dx.doi.org/10.1080/00359190009520436.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Elwen, SH, M. Thornton, SP Kirkman, PA Pistorius, and CR Weir. "The first African Marine Mammal Colloquium, South Africa, May 2010." African Journal of Marine Science 33, no. 3 (November 2011): 349–51. http://dx.doi.org/10.2989/1814232x.2011.637615.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Bolton, J. J., M. T. Davies-Coleman, and V. E. Coyne. "Innovative processes and products involving marine organisms in South Africa." African Journal of Marine Science 35, no. 3 (September 2013): 449–64. http://dx.doi.org/10.2989/1814232x.2013.830990.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Dippenaar, SM. "Biodiversity and studies of marine symbiotic siphonostomatoids off South Africa." African Journal of Marine Science 38, no. 1 (April 6, 2016): 1–5. http://dx.doi.org/10.2989/1814232x.2016.1161664.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Mead, A., J. T. Carlton, C. L. Griffiths, and M. Rius. "Introduced and cryptogenic marine and estuarine species of South Africa." Journal of Natural History 45, no. 39-40 (October 2011): 2463–524. http://dx.doi.org/10.1080/00222933.2011.595836.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Lever, James, Robert Brkljača, Gerald Kraft, and Sylvia Urban. "Natural Products of Marine Macroalgae from South Eastern Australia, with Emphasis on the Port Phillip Bay and Heads Regions of Victoria." Marine Drugs 18, no. 3 (February 28, 2020): 142. http://dx.doi.org/10.3390/md18030142.

Full text

Abstract:

Marine macroalgae occurring in the south eastern region of Victoria, Australia, consisting of Port Phillip Bay and the heads entering the bay, is the focus of this review. This area is home to approximately 200 different species of macroalgae, representing the three major phyla of the green algae (Chlorophyta), brown algae (Ochrophyta) and the red algae (Rhodophyta), respectively. Over almost 50 years, the species of macroalgae associated and occurring within this area have resulted in the identification of a number of different types of secondary metabolites including terpenoids, sterols/steroids, phenolic acids, phenols, lipids/polyenes, pheromones, xanthophylls and phloroglucinols. Many of these compounds have subsequently displayed a variety of bioactivities. A systematic description of the compound classes and their associated bioactivities from marine macroalgae found within this region is presented.

APA, Harvard, Vancouver, ISO, and other styles

46

Scott, W. E., and T. Zohary. "Freshwater algae and the economy." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 7, no. 4 (March 17, 1988): 195–98. http://dx.doi.org/10.4102/satnt.v7i4.929.

Full text

Abstract:

This article discusses the current economic importance of fresh water algae and possibilities of exploitation of algae in the future. Desirable and undesirable aspects are considered and illustrated with examples mainly from South Africa. The excessive development of undesirable algae in freshwater adversely affects the water quality by a number of chemical changes which can vary from tastes and odours to production of substances that consitute a threat to human or animal health. Removal of unwanted algae adds considerably to the costs of water treatment. Excessive algal growth impairs recreational activities and affects shoreline property values.

APA, Harvard, Vancouver, ISO, and other styles

47

Titlyanov, Eduard A., Tamara V. Titlyanova, Mutsunori Tokeshi, and Xiubao Li. "Inventory and Historical Changes in the Marine Flora of Tomioka Peninsula (Amakusa Island), Japan." Diversity 11, no. 9 (September 6, 2019): 158. http://dx.doi.org/10.3390/d11090158.

Full text

Abstract:

Intensive algal sampling was conducted from 2012 to 2017 in the Tomioka Peninsula, Amakusa-Shimoshima Island (the East China Sea, Japan), yielding a total of 293 benthic macroalgal taxa, of which 63% were red algae, 16% were brown algae, and 19% were green algae. The majority (69%) of species were previously recorded only for the tropics and/or subtropics, whereas 31% of species were recorded for temperate latitudes. Among all species of algae found from 2012 to 2017 in the Tomioka Peninsula, 163 species (56%) were newly identified species for Amakusa-Shimoshima Island, including six taxa, which were recorded in Japan for the first time. Comparison of the current data from the Amakusa-Shimoshima Island with those of nearby tropical regions suggested that the recent marine flora of the Amakusa-Shimoshima Island was more closely affiliated with the flora of a warm-temperate region. Moreover, we found that the benthic flora of the Tomioka Peninsula was significantly changed between the 1950s (Segawa & Yoshida 1961) and 2012–2017. For example, the species diversity was increased by two times, mainly at the expense of red and green algae, and the biogeographic status of the benthic flora was changed from the flora of a cold-temperate region to the flora of a warm-temperate region, which could be attributed to an introduction of red algae from the tropics of South East Asia and widespread opportunistic green algae, as well as the disappearance of cold-water brown algae. Collectively, our data suggested that these changes were driven by the global warming effect on the ocean.

APA, Harvard, Vancouver, ISO, and other styles

48

Sartoni, Gianfranco. "Research on the marine algae of South-central Somalia. 3. The Siphonocladales-Cladophorales complex." Webbia 46, no. 2 (January 1992): 291–326. http://dx.doi.org/10.1080/00837792.1992.10670526.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Kraft, Gerald T. "Marine and estuarine benthic green algae (Chlorophyta) of Lord Howe Island, south-western Pacific." Australian Systematic Botany 13, no. 4 (2000): 509. http://dx.doi.org/10.1071/sb99015.

Full text

Abstract:

A taxonomic survey of marine and estuarine benthic green algae has been conducted at Lord Howe Island, the site of the world’s southernmost (at 31.5˚S) consolidated coral reef. Thirty-two genera and 71 species are described from habitats ranging from upper intertidal to 20–30-m depths. Sixteen of the species are based on Lord Howe types, and 11 are described as new. Twelve species are currently known only from the Island. Particularly well represented in the flora are the genera Enteromorpha (six species, one variety), Chaetomorpha (four species), Cladophora (13 species),Codium (five species), Caulerpa (seven species, two varieties) and Bryopsis (three species). The island is further distinctive in having two representatives of some relatively obscure genera (Cladophoropsis, Rhipiliopsis, Pseudochlorodesmis) and in being the highest-latitude collecting locality for several species. Affinities of the Lord Howe flora are primarily tropical Indo-Pacific, with very few elements otherwise restricted to southern Australia and New Zealand.

APA, Harvard, Vancouver, ISO, and other styles

50

Whittle, Rowan, Sarah Gabbott, Richard Aldridge, and Johannes Theron. "Late Ordovician (Hirnantian) scolecodont clusters from the Soom Shale Lagerstätte, South Africa." Journal of Micropalaeontology 27, no. 2 (November 1, 2008): 147–59. http://dx.doi.org/10.1144/jm.27.2.147.

Full text

Abstract:

Abstract. More than 20 partial scolecodont clusters were recovered from the Soom Shale Lagerstätte, South Africa. The specimens were found in association with chitinozoans, algae, conodont apparatuses and the enigmatic needle-like fossil Siphonacis. The Family Xanioprionidae is identified and the species Xanioprion? n. sp. is distinguished. The Family Mochtyellidae is also identified and the new genus Synaptogenys and new species S. rietvleiensis are described. The specimens represent the first described scolecodonts from South Africa and the first apparatus-based taxonomic study of specimens from Gondwana.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Marine algae – South Africa'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles