Dynamics of Weed PopulationsCambridge University Press, 24 нояб. 1995 г. - Всего страниц: 332 Weeds have ecological attributes that confer the ability to interfere with human activities. Roger Cousens and Martin Mortimer place weed management within an ecological context, with the focus on the manipulation of population size. They consider the dynamics of abundance and spatial distribution at both geographic and local scales, and consider the basic processes of dispersal, reproduction and mortality together with the factors that influence them. The authors show how management modifies patterns of behavior that are intrinsic to populations, and note the evolution and management of resistance to herbicides. This book provides weed science with the conceptual basis that has previously been lacking. It also gives ecologists and botanists access to the extensive database on the population ecology of weeds. |
Результаты поиска по книге
Результаты 1 – 5 из 17
Стр. 17
Извините, доступ к содержанию этой страницы ограничен..
Извините, доступ к содержанию этой страницы ограничен..
Стр. 18
Извините, доступ к содержанию этой страницы ограничен..
Извините, доступ к содержанию этой страницы ограничен..
Стр. 41
Извините, доступ к содержанию этой страницы ограничен..
Извините, доступ к содержанию этой страницы ограничен..
Стр. 48
Извините, доступ к содержанию этой страницы ограничен..
Извините, доступ к содержанию этой страницы ограничен..
Стр. 75
Извините, доступ к содержанию этой страницы ограничен..
Извините, доступ к содержанию этой страницы ограничен..
Содержание
Weed population dynamicsthe framework | 1 |
The impact of weeds | 3 |
The development of a weed flora | 4 |
The concept of a habitat | 8 |
Studying weed populations | 9 |
Lifecycles and life histories | 15 |
Overview | 18 |
The dynamics of geographic range expansion | 21 |
Conclusions | 167 |
Extrinsic factors affecting population density | 169 |
The effects of agricultural management factors | 170 |
The effects of weather | 189 |
Interactions with other organisms | 191 |
Using models to explore weed control options | 195 |
Conclusions | 216 |
The spatial dynamics of weed populations | 217 |
Are there recognisable phases in the invasion process? | 23 |
How can we measure rate of spread from available data? | 30 |
What governs rate of spread during an invasion? | 38 |
What makes range expansion cease? | 40 |
have species of weeds spread in some directions more than in others? | 44 |
Have particular modes of dispersal dominated spread between continents? | 47 |
implications for the management of invasions | 51 |
Conclusions | 54 |
Dispersal within and between populations | 55 |
Patterns of dispersal | 56 |
Dispersal by different agencies | 62 |
How important are the various vectors of dispersal? | 81 |
Conclusions | 85 |
Processes involved in the regulation of population density | 86 |
The seed phase | 88 |
The seed phase | 91 |
The plant phase | 111 |
Vegetative reproductive phase | 129 |
Conclusions | 133 |
The intrinsic dynamics of population density | 135 |
What types of trajectory are likely? | 136 |
how do we go about mathematical modelling? | 140 |
Mathematical models of population density | 145 |
What types of trajectory occur in practice? | 161 |
The implications of habitat mosaics within fields | 218 |
Field observations of the spread of weed populations | 221 |
Models of patch expansion | 225 |
Implications for patch formation | 228 |
Field observations of the dynamics of weed patches | 230 |
a conceptual view | 235 |
Suggestions from simulation models | 238 |
Conclusions | 242 |
The evolution of herbicide resistance | 243 |
Theoretical background | 246 |
single and multigene systems | 254 |
The dynamics of selection | 259 |
The management of herbicide resistance | 278 |
Conclusions | 282 |
Weed population dynamics synthesis and prognosis | 283 |
Is the data base extensive enough? | 284 |
Can changes in weed populations be predicted? | 285 |
Are the right questions being answered? | 288 |
Can studies of weed biology drive changes in farm or land management? | 292 |
Conclusions | 294 |
References | 295 |
323 | |
327 | |
Другие издания - Просмотреть все
Часто встречающиеся слова и выражения
abundance Abutilon theophrasti allele Alopecurus myosuroides annual application arvensis Australia Avena fatua behaviour Biology biotype Bromus sterilis cereal changes Chapter chemical Chenopodium album chlorotoluron cohort combine harvester Cousens crop cultivation curve Cussans Cyperus esculentus decline density-dependent direct drilling dispersal distance distribution dormancy dynamics of weed Ecology effects emergence equation equilibrium example exponential factors farm field frequency gene genotypes germination growth habitat harvesting herbicide resistance individuals invasion life-cycle Lolium rigidum long term loss mortality Mortimer number of seeds occur parameters pasture patch plots ploughing population density population dynamics predation predictions propagules proportion range rate of increase rate of spread recorded reduced relative result rhizomes seed bank seed production seedlings selection simulation soil surface sowing sown spatial studies survival susceptible temperature tillage trajectory triazine tubers values vegetation weed control weed density weed management weed population dynamics Weed Science weed seeds weed species winter wheat