Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Zostera capensis"”.
-
Ecology and ecophysiology of Zostera capensis: responses and acclimation to temperature
… of the threatened, habitat-forming seagrass, Zostera capensis in Langebaan Lagoon, a marine protected area that forms part of the West Coast national park, South Africa; and the physiological strategies that allow this habitat to persist in sub- and supra-optimal temperatures. First, the …
-
Physico-chemical factors influencing the spatial and temporal distribution of the seagrass Zostera capensis in Langebaan lagoon
… the main physico-chemical factors influencing Zostera capensis biomass and distribution in Langebaan Lagoon. Five sites within the Langebaan Lagoon were selected and within these sites a minimum of three and maximum of ten Z. capensis beds were sampled, depending on the availability of the …
-
Interactive effects of temperature and grazing by seagrass limpets (Siphonaria compressa and Fissurella mutabilis) on seagrass (Zostera capensis)
… and at a local level, cover of the seagrass Zostera capensis has declined by 38% over the last 50 years in Langebaan Lagoon, with associated losses of invertebrate abundance by 70% in certain areas. Two limpets, Siphonaria compressa and Fissurella mutabilis depend on Zostera capensis for …
-
The effects of the macroalga Gracilaria gracilis and increasing temperatures on the performance of the endemic Cape eelgrass Zostera capensis
… and low) on the performance of the seagrass Zostera capensis, which occurs in Langebaan Lagoon, South Africa over a seven-week period. Results from the laboratory experiment revealed that G. gracilis did not significantly affect the performance of Z. capensis although temperature did result …
-
The ecological effects of bioturbation on the eelgras Zostera capensis : community interactions and the impacts on the biota of an intertidal sandflat
… by Callianassa kraussi on the eelgrass Zostera capensis, and its indirect effects on the sedentary mudprawn Upogebia africana and the biota of an intertidal sandflat were assessed at Langebaan Lagoon, South Africa, through comparative surveys, observations and field experiments. I …
-
Ecology and physiology of bacterial activity in a temperate saltmarsh lagoon, with an emphasis on nitrogen fixation
… those associated with beds of the seagrass Zostera capensis, burrows of the sandprawn Callianassa kraussi at Oesterwal, and burrows of the mudprawn Upogebia africana at Geelbek) showed that bacterial activity was higher in surface sediments than in subsurface sediments. Highest rates of …
-
Habitat utilisation by juvenile fishes in Mhlathuze Estuary and Richards Bay Habour
… of physico-chemical variables. Eelgrass, Zostera capensis, is an important nursery for many fishes not found in other habitats. Presently in KwaZulu-Natal Zostera only occurs in Mhlathuze Estuary and St Lucia. Fish diversity in several other systems where it historically occurred may now …
-
Bioaccumalation of metals in mullet from Mhlathuze Estuary and the effect of Cu and Pb on the uptake kinetics,haematology and acid-base balance of Liza dumerelii.
… Apsendes digitalis) and submerged macrophytes (Zostera capensis) and analysing for metal accumulation. Seven metals, i.e. Al, Cr. Cu, Fe, Mn, Pb and Zn were analysed in the abovementioned abiotic and biotic compartments following standard nitric/perchloric acid digestion techniques and using a …
-
Phylogeny and biogeography of Southern African limpets in the genus Siphonaria in the context of a global phylogeny
… Africa, where it is associated with the seagrass Zostera capensis. In 2005 a population of what was considered the same species was recorded in Knysna Lagoon on the South Coast. On the basis of COI and 16S analyses coupled with shell morphometrics I found that the two populations have no shared …