• Publications
  • Influence
Reproductive success, spontaneous embryo abortion, and genetic load in flowering plants
SummaryReproductive success is divided into two phases: preemergent (the number of viable seeds that enter the ambient environment) and postemergent (the percentage of progeny that survive toExpand
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Ovule survivorship, brood size, life history, breeding systems,and reproductive success in plants
  • D. Wiens
  • Biology, Medicine
  • Oecologia
  • 1 September 1984
The percentage of ovules developing into seeds (seed-ovule ratios, S/O ratios) is about 85% in annuals but only approximately 50% in perennials.In both annuals and perennials, these typical S/OExpand
  • 192
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Mimicry in Plants
Mimetic phenomena have played a central role in many evolutionary questions and today provide some of the best examples of natural selection. Since its discovery by Bates (1862) in AmazonianExpand
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Mistletoes of Africa
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Evaluating Farmer Defined Management Zone Maps for Variable Rate Fertilizer Application
In the U.S.A. intensive grid soil sampling has conventionally been used to develop prescription maps for variable rate (VRT) fertilizer application. Grid sampling can provide an accurate basis forExpand
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Nonflying mammal pollination of southern african proteas: A non-coevolved system
Traits characterizing those proteas adapted for pollination by nonflying mammals include: bowlshaped heads bearing fleshy bracts, these borne on short, flexible peduncles, often at or near groundExpand
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Are seed set and speciation rates always low among species that resprout after fire, and why?
A general dichotomy in response to catching alight during fire is for perennial plants to die (nonsprouters, N) or to regrow via dormant buds (resprouters, R). Contrasting effects on otherExpand
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