Segetal Weed Vegetation Database of Greece

Combining a weed traits database with a population dynamics model predicts shifts in weed communities

A functional approach to predicting shifts in weed floras in response to management or environmental change requires the combination of data on weed traits with analytical frameworks that capture the filtering effect of selection pressures on traits. A weed traits database (WTDB) was designed, populated and analysed, initially using data for 19 common European weeds, to begin to consolidate tra...

Potential of a terrestrial LiDAR-based system to characterize weed vegetation

Undercover predators: Vegetation mediates foraging, trophic cascades, and biological control by omnivorous weed seed predators

Blubaugh, Carmen K. Ph.D., Purdue University, May 2015. Undercover Predators: Vegetation Mediates Foraging, Trophic Cascades, and Biological Control by Omnivorous Weed Seed Predators. Major Professor: Ian Kaplan. Weed pressure is the most costly challenge that vegetable growers face, requiring more labor investment than other production inputs. Vertebrate and invertebrate seed predators destroy...

Vegetation analysis : The relation between weed densities and Raunkiær frequencies in arable fields

Raunkiær analysis (Raunkiær, 1934) is a method for vegetation density estimation, where a number of plots are examined. The frequency of plots in which a species is present is used as a measure of the density. Often analysis of such data is based on the assumption that the plants are distributed completely at random (Diggle, 1984; Böcher & Bentzon, 1958), an assumption that rarely holds for wee...

Vegetation Composition in a Post-Fire Successional Gradient of Pinus halepensis Forests in Attica, Greece*

The vegetation composition of a post-fke succession in Aleppo pine forests of Anica, Greece, was studied by a synchronic method. The sites form a post-fire chronosequence and have typical Mediterranean climate. Data on the flora of the burned sites, growth and life forms of the various plant taxa, as weU as on vegetation smcture are provided. The burned ecosystems recovered quite rapidly. Durin...