Three parameters, population growth rate at an infection site, fractional loss by dispersal and the distance this fraction can move were used to build a simple model of spread. Rates of total population growth tended to be exponential and rates of spread linear.

Factors which affect the spread of plants are reviewed and simple models of spread are created to show the need for improved monitoring of weed distribution.

A field experiment was done to investigate how the spatial distribution of gaps influences the rate at which offspring of the introduced invader Senecio vulgaris spreads through a perennial ryegrass community. Results showed that the rate of spread was sensitive to both the gap size and the gap distribution and plants moved a greater distance when the gaps were large and underdispersed.

An analysis of spatial pattern of the seed bank in a Maryland field showed that the seed bank was composed primarily of annual and short–lived perennial species. The seeds were generally clustered and seed abundance decreased with depth. A comparison of 3 sampling techniques was also done.

Found that landscape position had a significant effect on the population dynamics of the invasion of Acacia nilotica. Shrubs increased in extent and density in riparian areas vs. upland areas probably due to a switch from sheep grazing to cattle grazing.

A review of modelling and mapping of weed spread, especially in agricultural fields.

A methodological study in mapping vegetation variables. The method is related to trend surface analysis and is based on polynomial regression. It describes the spatial pattern of a weed community in a corn field. Not that interesting since the focus is agriculture weeds.

Spatial pattern of weeds was analyzed and was found to be exclusively annual species. The pattern was patchy.

Relative abundance of alien weed species in northwestern USA were documented through herbarium and literature data. Both relative abundance and absolute abundance of alien weeds increased from 1900–1980. The point: past weed control policies ineffective.

A review of studies of weed competition and dispersion. They argue that strategies to reduce yield losses by improving the capability of a crop to compete against weeds is less profitable then strategies that manage dispersal and distribution of weed propagules.

A very good review of literature and theories of the factors that promote the spread of weeds at that time.

Historical documentation of the invasion of Bromus tectorum based on herbarium sheets, diaries, and logs from1850 to present. Very interesting.

An excellent review of invasive plant studies, including modeling spatial distribution and spread of invasives.

Simple individual based models of population dynamics and spatial patterns were developed using cellular automata theory. It models the interplay of dispersal and local interactions. Very interesting.

Very good field experiments done over 4 years to examine the ecology of scotch broom. The proportion of the seed bank that germinated each year was highest in the disturbed plots and seedling survival depended on disturbance.

Determined and examined the pattern of dispersal of the achene of Heterotheca latifolia, an invasive from Texas. The spread coincides with the wind patterns of Georgia. An area of 194 plants produced an estimated 3.6 fruits of which 1/3 were accounted for over and area 8 times greater than occupied by the parent colony.

Simulation and analytical models developed for scotch broom to examine changes in population size and ground cover. The precursor paper before their field experiments.

Biology and history of the spread of Myrica faya on the volcanic areas of Hawaii. A very detailed and excellent study. So much done in this paper I cannot even list them all.