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| Preface | |
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| Weed population dynamics--the framework | |
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| The impact of weeds | |
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| The development of a weed flora | |
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| The concept of a habitat | |
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| Studying weed populations | |
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| Life-cycles and life histories | |
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| Overview | |
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| The dynamics of geographic range expansion | |
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| Are there recognisable phases in the invasion process? | |
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| How can we measure rate of spread from available data? | |
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| What governs rate of spread during an invasion? | |
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| What makes range expansion cease? | |
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| Invasion direction: have species of weeds spread in some directions more than in others? | |
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| Have particular modes of dispersal dominated spread between continents? | |
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| Models of range expansion: implications for the management of invasions | |
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| Conclusions | |
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| Dispersal within and between populations | |
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| Patterns of dispersal | |
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| Dispersal by different agencies | |
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| How important are the various vectors of dispersal? | |
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| Conclusions | |
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| Processes involved in the regulation of population density | |
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| The seed phase | |
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| The plant phase | |
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| Vegetative reproductive phase | |
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| Conclusions | |
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| The intrinsic dynamics of population density | |
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| What types of trajectory are likely? | |
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| A short digression: how do we go about mathematical modelling? | |
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| Mathematical models of population density | |
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| What types of trajectory occur in practice? | |
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| Conclusions | |
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| Extrinsic factors affecting population density | |
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| The effects of agricultural management factors | |
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| The effects of weather | |
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| Interactions with other organisms | |
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| Using models to explore weed control options | |
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| Conclusions | |
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| The spatial dynamics of weed populations | |
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| The implications of habitat mosaics within fields | |
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| Field observations of the spread of weed populations | |
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| Models of patch expansion | |
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| Implications for patch formation | |
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| Field observations of the dynamics of weed patches | |
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| Meta-population dynamics and weed populations: a conceptual view | |
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| Suggestions from simulation models | |
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| Conclusions | |
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| The evolution of herbicide resistance | |
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| Theoretical background | |
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| The genetic basis of herbicide resistance: single and multigene systems | |
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| The dynamics of selection | |
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| The management of herbicide resistance | |
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| Conclusions | |
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| Weed population dynamics: synthesis and prognosis | |
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| Is the data base extensive enough? | |
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| Can changes in weed populations be predicted? | |
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| Are the right questions being answered? | |
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| Can studies of weed biology drive changes in farm or land management? | |
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| Conclusions | |
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| References | |
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| Organism index | |
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| Subject index | |