University of Port Elizabeth

About: University of Port Elizabeth is a based out in . It is known for research contribution in the topics: Population & Estuary. The organization has 1067 authors who have published 1538 publications receiving 38560 citations. The organization is also known as: UPE & Universiteit van Port Elizabeth.

A New Census Method For Penguins Tested On Jackass Penguins Sphenzscus Demersus

Abstract: Randall, R. M., Randall, B. M., Cooper, J. & Frost, P. G. H. 1986: A new census method for penguins tested on Jackass Penguins Spheniscus demersus. Ostrich 57: 211–215 A census method for Jackass P...

The influence of a marina canal system on the ecology of the Kromme estuary, St Francis Bay

Abstract: The influence of the marina canals on the lower reaches and mouth area of the Kromme estuary was investigated. Surveys were conducted during 1978 and 1979 in the marina system as well as in the main estuary in the vicinity of the marina. Analyses and comparisons of the biotic communities in the marina and in the main estuary showed a very similar composition, but differences in density were observed for several of the species. The plankton and nekton samples in the estuary and in the marina showed the same seasonal trends in abundance. The abiotic characteristics of the marina canals were also Investigated and special attention was given to water circulation in the system during a tidal cycle. These observations showed that water circulation throughout the entire system was good, indicating efficient flushing and tidal turnover. Temperature, salinity and dissolved 02 values indicated well-mixed and saturated waters. It is concluded that the marina has, in effect, increased the habitat area for plankton, benthic macro-invertebrate fauna and fish and that it does not have an adverse effect on the ecology of the Kromme estuary.

The occurrence of Mesozoic oceanic floor and ancient continental crust on South Georgia

Abstract: The Larsen Harbour Formation of southern South Georgia is part of an ophiolite sequence of submarine lavas and sheeted dykes emplaced into metasedimentary country rocks. The metasediments are remnants of a pre-Cretaceous continental crust which had been subject to regional metamorphism and polyphase deformation prior to intrusion by a variety of acid and basic igneous rocks (roots of the ophiolitic sequence). It is proposed that the segment of continental crust and the Larsen Harbour Formation formed the floor of a back-arc basin which was infilled during Early Cretaceous time by a thick sequence of volcaniclastic sediments (Cumberland Bay Formation).