Information collected from studies	Classifications within each category of information
Focus of the work	Hypothesis about invasions examined (implicitly or explicitly) Impacts of invasions Testing fundamental ecological ideas with invasive systems
Type of research	Field –experimental Field – observational Theoretical/modeling Statistical/meta-analysis Greenhouse Garden Lab Review
Invader species name
Trophic level of invader	Primary producer Herbivore Predator Omnivore Decomposer Filter feeder Pathogen Parasite
Location of invasion under study	Country, state, local area name (i.e. parkland, lake or river) If given: Latitude and Longitude
Ecosystem	Terrestrial Marine Lentic Lotic Wetland Estuarine
Biome	Grassland Deciduous forest Coniferous forest Tropical forest Subtropical forest Urban/old field Savanna Chapparal/shrublands Wetland/riparian Mountain/alpine Tundra Intertidal/near shore Pelagic/open ocean Coral reef Benthic
Hypothesis considered by study	Climate Change Community Species Richness Disturbance Ecosystem Engineers Empty Niche Enemy Of My Enemy Enemy Release Evolution of Increased Competitive Ability (EICA) Evolution in General Fluctuating Resources Hybridization Inherent Superiority (Ideal Weed) Mutualism, Facilitation, or Invasional Meltdown Novel Weapons/Allelopathy Plasticity Preadaptation to Climate Propagule Pressure Other
If the hypothesis being considered is the “inherent superiority” of the invader, mechanism postulated for superiority	Broad Tolerances Clonal reproduction Effective disperser High Reproductive output Rapid Growth Self compatible Superior competitor