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Institution

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.


Papers
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Journal ArticleDOI
08 Apr 2004-Nature
TL;DR: It is shown that the global network of protected areas is far from complete, and the inadequacy of uniform—that is, ‘one size fits all’—conservation targets is demonstrated, in the first global gap analysis assessing the effectiveness ofprotected areas in representing species diversity.
Abstract: The Fifth World Parks Congress in Durban, South Africa, announced in September 2003 that the global network of protected areas now covers 11.5% of the planet's land surface. This surpasses the 10% target proposed a decade earlier, at the Caracas Congress, for 9 out of 14 major terrestrial biomes. Such uniform targets based on percentage of area have become deeply embedded into national and international conservation planning. Although politically expedient, the scientific basis and conservation value of these targets have been questioned. In practice, however, little is known of how to set appropriate targets, or of the extent to which the current global protected area network fulfils its goal of protecting biodiversity. Here, we combine five global data sets on the distribution of species and protected areas to provide the first global gap analysis assessing the effectiveness of protected areas in representing species diversity. We show that the global network is far from complete, and demonstrate the inadequacy of uniform--that is, 'one size fits all'--conservation targets.

1,344 citations

Journal ArticleDOI
10 Sep 2004-Science
TL;DR: Future warming is likely to alter the spatial distribution of primary and secondary pelagic production, affecting ecosystem services and placing additional stress on already-depleted fish and mammal populations.
Abstract: It is now widely accepted that global warming is occurring, yet its effects on the world's largest ecosystem, the marine pelagic realm, are largely unknown. We show that sea surface warming in the Northeast Atlantic is accompanied by increasing phytoplankton abundance in cooler regions and decreasing phytoplankton abundance in warmer regions. This impact propagates up the food web (bottom-up control) through copepod herbivores to zooplankton carnivores because of tight trophic coupling. Future warming is therefore likely to alter the spatial distribution of primary and secondary pelagic production, affecting ecosystem services and placing additional stress on already-depleted fish and mammal populations.

759 citations

Journal ArticleDOI
20 Jul 2000-Nature
TL;DR: The described structure of a soluble Fcγ receptor (sFcγRIII, CD16), an Fc fragment from human IgG1 (hFc1) and their complex is a model for immune complex recognition and helps to explain the vastly differing affinities of other F cγR–IgG complexes and the FcεRIα-IgE complex.
Abstract: The immune response depends on the binding of opsonized antigens to cellular Fc receptors and the subsequent initiation of various cellular effector functions of the immune system. Here we describe the crystal structures of a soluble Fcγ receptor (sFcγRIII, CD16), an Fc fragment from human IgG1 (hFc1) and their complex. In the 1:1 complex the receptor binds to the two halves of the Fc fragment in contact with residues of the Cγ2 domains and the hinge region. Upon complex formation the angle between the two sFcγRIII domains increases significantly and the Fc fragment opens asymmetrically. The high degree of amino acid conservation between sFCγRIII and other Fc receptors, and similarly between hFc1 and related immunoglobulins, suggest similar structures and modes of association. Thus the described structure is a model for immune complex recognition and helps to explain the vastly differing affinities of other FcγR–IgG complexes and the FceRIα–IgE complex.

753 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the impact that some organisational factors can have on a service firm's ability to return dissatisfied customers to a state of satisfaction through service recovery and found that when frontline staff are performing service recovery effectively, they are less likely to resign and report higher levels of job satisfaction.
Abstract: This study considers the impact that some organisational factors can have on a service firm’s ability to return dissatisfied customers to a state of satisfaction through service recovery. In other words, it investigates the potential impact organisational variables (modelled as antecedents) can have on the service recovery performance of frontline staff. It also assesses the impact that successful service recovery has on two outcome variables, namely, intentions to resign and job satisfaction. The results show that organisational commitment exerts a strong positive influence on the service recovery performance of frontline staff as does empowerment and rewarding them for service excellence. When frontline staff are performing service recovery effectively, they are less likely to resign and report higher levels of job satisfaction.

521 citations

Journal ArticleDOI
TL;DR: In this article, the authors assess the impact of three service recovery options (decisions) on customer satisfaction: time/speed; level of atonement; and who should be involved in service recovery.
Abstract: As the importance of service quality, as both marketing strategy and competitive advantage, gains more and more recognition, efforts to recover from poor service delivery are receiving increased attention. Yet, much of the literature is based on anecdotal accounts rather than theoretical conceptualizations or rigorous empirical assessment. At least one retailing study has shown that more than 70 per cent of customers who complain can be persuaded to continue shopping with the offending retailer provided that some effort is made to recover. Little, however, is known about which strategies to employ or how these strategies interact to influence customer perceptions and attitudes, especially in a services environment. Assesses, from a management perspective, the impact three service recovery options (decisions) can have on customer satisfaction: time/speed; level of atonement; and who should be involved in service recovery. Finds that level of atonement (a tangible offering) emerged as the most dominant main effect followed by time/speed, while the organizational position of the person involved in service recovery was not significant as a main effect.

459 citations


Authors

Showing all 1067 results

NameH-indexPapersCitations
Richard M. Cowling9639230042
Keith Davids8460425038
Thomas A. Schlacher541969594
Anton McLachlan4915610089
Graham I. H. Kerley452038126
Lynnath E. Beckley422175884
Andrew T. Knight391016488
David S. Schoeman391258654
Dan Baird38734841
Johanna J. Heymans381014448
Jenifer E. Dugan37986470
Steven E. Koch36964100
Kerry L. McPhail351005863
Janine B. Adams341933754
M.T. Hoffman33955660
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20201
20191
20162
20156
20145
20133