George E. Schatz

Learn More
Slowing rates of global biodiversity loss requires preventing species extinctions. Here we pinpoint centers of imminent extinction, where highly threatened species are confined to single sites. Within five globally assessed taxa (i.e., mammals, birds, selected reptiles, amphibians, and conifers), we find 794 such species, three times the number recorded as(More)
Globally, priority areas for biodiversity are relatively well known, yet few detailed plans exist to direct conservation action within them, despite urgent need. Madagascar, like other globally recognized biodiversity hot spots, has complex spatial patterns of endemism that differ among taxonomic groups, creating challenges for the selection of(More)
Few studies have attempted to quantify the reduction or document the floristic composition of forests in Madagascar. Thus, we focused specifically on deforestation and plant diversity in Madagascar's eastern littoral community. We used a data set of approximately 13,500 specimen records compiled from both historical and contemporary collections resulting(More)
1Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166-0299, USA 2Conservatoire et Jardin botaniques de la Ville de Genève, ch. de l’Impératrice 1, CP 60, 1292 Chambésy, Switzerland 3Département Systématique et Evolution, Muséum National d’Histoire Naturelle, Case Postale 39, 57 rue Cuvier, FR-75231 Paris CEDEX 05, France 4Missouri Botanical Garden,(More)
The continuing decline of plant diversity will have a greater impact on human society than any other type of biodiversity loss. It is imperative, therefore, that efforts are increased to assess the conservation status of plants for the IUCN Red List of Threatened Species, the de facto baseline reference for many conservation decisions. As discussed here, a(More)
1. INTRODUCTION Madagascar's imperilled biota are now experiencing the effects of a new threat—climate change (Raxworthy et al. 2008). With more than 90% endemism among plants, mammals, reptiles and amphibians, the stakes are high. The pristine landscapes that allowed this exceptional biodiversity to survive past climate changes are largely gone.(More)
Vascular plants are often considered to be among the better known large groups of organisms, but gaps in the available baseline data are extensive, and recent estimates of total known (described) seed plant species range from 200000 to 422000. Of these, global assessments of conservation status using International Union for the Conservation of Nature (IUCN)(More)
 In molecular analyses Didymelaceae together with Buxaceae form a fairly well-supported clade among families near the base of eudicots. Only little is known, however, about the flowers and inflorescences of Didymelaceae. In this study, the structure of the female flowers and inflorescences of Didymeles integrifolia was studied. Flowers are unicarpellate and(More)
We examined the cost of conserving species as climate changes. We used a Maxent species distribution model to predict the ranges from 2000 to 2080 of 74 plant species endemic to the forests of Madagascar under 3 climate scenarios. We set a conservation target of achieving 10,000 ha of forest cover for each species and calculated the cost of achieving this(More)
  • 1