Topic Seagrass Data

Currency 1998

• Seagrass Present/Absent - Distribution of seagrass throughout Torres Strait as derived from the collation of various CSIRO cruises 1984 – 1997. Reef data excluded.ie. intertidal and sub-tidal only. Voronoi map created. [Dataset] [Project: TSCP97] ref: D85

Currency 1997

• Seagrass Present/Absent - Distribution of seagrass throughout Torres Strait as derived from the collation of various CSIRO cruises 1984 – 1997. Reef data excluded.ie. intertidal and sub-tidal only. Voronoi map created. [Dataset] [Project: Gis97] ref: D69

Currency 1996

• Seagrass Survey Site Density - Density map of collation of seagrass present/absent survey sites used in the derivation of seagrass distribution throughout Torres Strait 1984 - 1993. Density of survey sites over 200 sq.km. (within 7.5 km.). [Dataset] [Project: Gis93-96] ref: D59
• Seagrass Presence - Sub-Littoral Zone - Distribution of seagrass throughout Torres Strait as derived from the collation of various CSIRO cruises 1984 - 1993. Created from SAS seagrass master file of various cruises with reef sites excluded. ie. intertidal and subtidal zones only. Voronoi map created with reefs and land as boundary. [Dataset] [Project: Gis93-96] ref: D58
• Seagrass sample sites - Seagrass sample sites throughout Torres Strait as derived from the collation of various CSIRO cruises 1984 - 1993. Created from SAS seagrass master file of various cruises. [Dataset] [Project: Gis93-96] ref: D57
• Seagrass Percent Cover - Contours of seagrass percentage cover throughout the Dieback Study Area. The contours have been linearly interpolated from sample sites investigated during the CSIRO seagrass cruise December 1993. Contoured from dieback database - die.shp using sgcov(grid-code) field. Contour intervals are - 9999=land, 0=0%, 1=0-1%, 10=1-10%, 50=10-50%, 100=50-100%. [Dataset] [Project: Gis93-96] ref: D56
• Seagrass Dieback - Regions defining variations in seagrass presence(P) and absence(A) between 1984-89 seagrass distribution and 1993 seagrass distribution. Derived voronoi is the intersection of Historical and Present seagrass Present/Absent maps. [Dataset] [Project: Gis93-96] ref: D55
• Current (1993) Seagrass Distribution - Current (Now- 1993) Seagrass Distribution (polygon features) as derived by voronoi spatial modelling of CSIRO seagrass cruise December 1993. Derived from voronoi of hisstudy.dbf [Dataset] [Project: Gis93-96] ref: D54
• Historical (Past) Seagrass Distribution - Historical (Past) Seagrass Distribution (polygon features) as derived by voronoi spatial modelling of various CSIRO cruises 1984 - 1989. Derived from hisstudy.dbf [Dataset] [Project: Gis93-96] ref: D53
• Recent (1993) Seagrass Survey Sites - 263 locations of seagrass survey sites from seagrass cruise December 1993 of Central Torres Strait. Subset of diestudy.dbf (no grabs) [Dataset] [Project: Gis93-96] ref: D52
• Historical Seagrass Survey Sites - 365 locations of seagrass survey sites from various CSIRO cruises of Central Torres Strait 1984 -1989 derived from hisstudy.dbf [Dataset] [Project: Gis93-96] ref: D51