Applications • Web Services • Data Mangament • Statistics • GIS • GPS

Biotas

Biotas is a statistical and GIS tool for Windows® written for ecologists and resource professionals.

Biotas has been designed to assist in the analysis and understanding of spatial and temporal data. Studies that can benefit from Biotas include, but not limited to, those dealing with wildlife, fisheries and plant or animal ecology. Functions include home range, habitat use, movements, nearest neighbors, spatial randomness tests and more.

Biotas

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Available Functions:

  • GIS
    import and query coverages • shape file support • subsets and intersections • point in polygon test • shape buffering • pie chart display • accounts for nested polygons • shape and contiguity indices (under development) • and more
  • Home Range
    utilization analysis • minimum convex polygon • peeling and cluster functions • harmonic mean • fixed and adaptive kernel • circular buffers • voronoi (dirichlet) polygons • export home range contours as shape files.

     
  • Land Use
    neu's test • compositional analysis • johnson's test (under development)
  • Complete Spatial Randomness (CSR)<
    fixed quadrats • random quadrats • variance ratios • spatial autocorrelation (Moran's I test) • temporal autocorrelation
  • Animal Movements
    rayleigh's mean direction test • rao's spacing test • runs test of turning • direction and bearing output

     
  • Nearest Neighbor Analysis
  • Random Data and Modeling
  • Additional Features
    descriptive statistics • spatial association • linear regression • nonlinear regression • data stratification • data subsets • queries

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File Formats:

Biotas accepts location data (also known as point pattern data) as either query files or database tables in either *.dbf (DBase), *.xls (Excel) or ASCII file formats. Full SQL (Structured Query Language) use is supported. Biotas exports location data variables in ASCII, *.dbf, and *db formats, as well as Windows® clipboard copy and paste functions. Importation support for coverages includes ArcView® shape files, MapInfo Interchange format and *.dxf files. Biotas exports coverages (such as generated home range contours) as ArcView Shape files, ArcInfo® compatible text files or as *.dxf files.

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