Michèle F. Pfab

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A prospective evaluation of 74 human immunodeficiency virus (HIV)-infected patients with cardiopulmonary complaints revealed six patients (8.1 percent) with pulmonary hypertension with elevated right ventricular systolic over right atrial pressure of 58 +/- 8 mm Hg (range, 49 to 66 mm Hg), as documented by Doppler echocardiography. A thromboembolic cause(More)
Cycads in South Africa are facing an extinction crisis due to the illegal extraction of plants from the wild. Proving wild origin of suspect ex situ cycads to the satisfaction of a court of law is difficult, limiting law enforcement efforts. We investigated the feasibility of using multiple stable isotopes to identify specimens removed from the wild.(More)
Biodiversity targets, or estimates of the quantities of biodiversity features that should be conserved in a region, are fundamental to systematic conservation planning. We propose that targets for species should be based on the quantitative thresholds developed for the Vulnerable category of the IUCN Red List system, thereby avoiding future listings of(More)
Euphorbia clivicola R.A. Dyer is a Critically Endangered Northern Province endemic confined to two populations that have declined drastically over the last decade. One population is protected within a Nature Reserve, while the other occurs in a peri-urban area. In order to determine the causes of the population declines, herbivory damage to plants in both(More)
Species in the cycad genus Encephalartos are listed in CITES Appendix I and as Threatened or Protected Species in terms of South Africa's National Environmental Management: Biodiversity Act (NEM:BA) of 2004. Despite regulations, illegal plant harvesting for medicinal trade has continued in South Africa and resulted in declines in cycad populations and even(More)
As a party to the Convention on Biological Diversity (CBD), South Africais obliged to ensure that CBD objectives are met. Fundamental to the concept ofbiodiversity are the different levels of biological organization ranging fromlandscapes to genes. Historically, biodiversity conservation has predominantlyfocussed on species, while southern African nature(More)
A 46-year old patient had suffered from progressive nocturnal sciatica and motor weakness of the left lower extremity for three years. The physical examination revealed a discrete neurologic deficit of the left L5 and S1 root. By CT a small presacral mass between the L5 and S1 roots was found. During the CT-guided fine needle puncture the patient felt an(More)
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