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Open Access Research article

Scale-dependent effects of habitat area on species interaction networks: invasive species alter relationships

Shinji Sugiura* and Hisatomo Taki

Author Affiliations

Department of Forest Entomology, Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan

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BMC Ecology 2012, 12:11  doi:10.1186/1472-6785-12-11

Published: 20 July 2012

Additional files

Additional file 1:

Seven study sites with 20 radii ranging from 120 m to 2020 m (100-2000 m from the hexagonal transects) used to obtain forest area. All sites were in Norfolk Country, Ontario, Canada. Shaded areas represent forests, and the bar indicates a 2000 m scale. The geospatial data were obtained from the Ontario Base Map Series in 2003 (Ontario Ministry of Natural Resources, Peterborough, Ontario, Canada), Code numbers indicate study site codes, which are provided in Table  1.

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Open Data

Additional file 2:

List of plant species at each forest site.

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Open Data

Additional file 3:

List of pollinator species at each forest site.

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Additional file 4:

Hexagonal transect with 20 m sides, with the chosen geographical point marking the centre (top). The axes were marked with bamboo poles and a 120 m section of rope demarcated the perimeter (bottom).

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Open Data