Browsing Masters by Department "Marine Research (MA-RE) Institute"

Now showing items 1-17 of 17

Assessment of a pond for oyster hatchery development in South Africa

Author: Simmons, Aron Date: 2015 This study assessed a man-made salt-water pond (saltwater pond 1 SP1) as a potential site for the development of an oyster hatchery in Velddrif, South Africa. Over the study period it was observed that the site was not suitable for oyster ... Read more
The biology and macroparasites of the sixgill sawshark Pliotrema warreni

Author: Foor, Brandon Date: 2017 Thirty-two specimens of the sixgill sawshark, Pliotrema warreni, were trawled near Bird Island in Algoa Bay on the Eastern coast of South Africa in April and May 2015. The specimens were examined for anatomical proportions, reproductive ... Read more
The commercial beach-seine fishery in False Bay, South Africa

Author: Lamberth, Stephen Justin Date: 1994 This study was initiated in response to allegations by the conservation lobby that the commercial beach-seine fishery in False Bay was jeopardizing fish stocks and detrimentally affecting the ecology of the Bay. Its main aims were to quantify ... Read more
Considering one's option when the fish leave: a case study of the traditional commercial handline fishery of the Southern Cape

Author: Gammage, Louise Carin Date: 2015 Today, many pressures (socio-economic, resource scarcity, policy, and regulation) make fishers and their communities vulnerable on a variety of fronts. These pressures threaten fishing communities along the South African coast. Both natural ... Read more
Deep water parapagurid hermit crabs: their distribution, abundance, population structure and associations in the Southern Benguela

Author: Wright, Amy Grace Date: 2017 The parapagurids Sympagurus dimorphus (Studer, 1883) and Parapagurus bouvieri (Stebbing, 1910) dominate South African deeper-water benthic invertebrate communities. Samples from the 2016 DAFF bi-annual hake demersal research trawl surveys ... Read more
Diet of the Tristan rock lobster Jasus tristani following the 2011 soya spill at Nightingale Island

Author: Jones, Luke Date: 2017 The spiny lobster Jasus tristani inhabits the Tristan da Cunha Island archipelago in the South Atlantic Ocean 2,400km from the West coast of South Africa. It is commercially exploited across the archipelago and is the main economic source of ... Read more
The environmental factors determining temporal distributions of cetaceans in Mossel Bay, South Africa

Author: Levy, David Date: 2017 A variety of cetacean species make use of the bays along the South African coast for different purposes, including feeding, mating and calving. Sightings of five species of cetaceans were recorded from shore based locations between February ... Read more
Environmental variables influencing spatial and temporal patterns of fish spawning and recruitment

Author: Mbatha, Fisokuhle Lungile Date: 2017 ABSTRACT Spawning times and spawning intensity during the life cycles of some fish species found off South Africa and Norway were synthesized using data collected from the literature. The comparison of temporal patterns in spawning of South ... Read more
Estimates of Phytoplankton carbon from high resolution optical sensors in the Southern Ocean

Author: Ogunkoya, Ayodele Gilbert Date: 2015 Phytoplankton is an important component of the oceanic carbon cycle, and deriving a good estimate of its carbon biomass (Cphyto) at ocean scale is difficult due to the lack of automatic sampling procedures. This is particularly difficult in ... Read more
Glacial-interglacial variations of the water masses in the southeast Atlantic Ocean derived from foraminiferal neodymium isotope ratios

Author: Von Koslowski, Rebecca Date: 2017 Variations in the global climate over time have long been associated with changes in the meridional overturning circulation of the oceans. It is now commonly believed that, during the Last Glacial Maximum (LGM), the transport of North Atlantic ... Read more
Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands

Author: Haley, Craig Date: 2016 The habitat associations between the caridean shrimp Nauticaris marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, ... Read more
Identification and distribution of South Africa's non-native beachfleas (Crustacea: Amphipoda: Talitridae)

Author: Diemer, Natalie Date: 2015 The two introduced beachfleas Orchestia gammarellus and Platorchestia platensis reported from South Africa have complicated histories, filled with misidentification and inaccurate documentation of distribution records. At the outset of this ... Read more
The inter-annual variability in the onset of the enhanced chlorophyll-a east of Madagascar

Author: Oozeeraully, Yuneeda Bibi Naheed Date: 2015 Chlorophyll-a concentration is a measure of phytoplankton biomass and is therefore used as a proxy for primary production. The chlorophyll bloom occurring in the South western Indian Ocean is one of the major blooms in the open ocean and is ... Read more
Interactive effects of temperature and grazing by seagrass limpets (Siphonaria compressa and Fissurella mutabilis) on seagrass (Zostera capensis)

Author: Waspe, Christopher Themba Date: 2015 Climate change is a reality. One of the main ecological concerns regarding climate change is the predicted increase in atmospheric and sea temperatures. The latter is expected to rise by roughly 2.5°C by the end of 2050 with dramatic impacts ... Read more
Quantitative fish survey of the submarine canyons of the iSimangaliso Wetland Park

Author: Geldenhuys, Dale Adam Date: 2015 There have been no quantitative studies of fish species associated with the submarine canyons of the north east coast of South Africa. These canyons offer protection to coelacanths Latimeria chalumnae, fish of commercial importance, and a ... Read more
A survey of the metazoan parasite assemblage of snoek, Thyrsites atun (Euphrasen, 1791), off South Africa with an assessment of host-parasite relationships and potential biological tags

Author: Nunkoo, Muhammad Azher Irfan Date: 2015 Parasites are a ubiquitous but often unseen, unacknowledged and understudied component of biological communities. However, their roles in structuring ecosystems, their influence on the evolutionary history of host species and their potential ... Read more
Variation in chemical components of aquacultured Ulva (Chlorophyta) in response to environmental variables

Author: Etwarysing, Lekraj Date: 2014 A detailed literature review of relevant Ulva biology and chemical composition is included. Marine algae are known to produce a wide range of volatile organic compounds that are primarily used in chemical communications. These compounds are ... Read more