1995 Purbeck Marine Research Unit, Canford School, Handfast Point to Ballard Point, Ross Coral Mapping Project
These records all relate to "Powell (ed) (1995) - Ross Coral Mapping Project 1995". A copy of the report is held at English Nature (Dorset Team). Following on from the survey work carried out in 1994, thirteen survey dives were undertaken in 1995 to provide further information on the extent of the Ross Coral colonies between Handfast Point and Ballard Point. Drift dives were used to make transects of the area. GPS/Decca navigation on the charter vessel Sea Ranger was used to pinpoint the position of divers at the start, during and at the end of the dive (following the diver's Surface Marker Buoy). The majority of dives were made at a working depth of 15-20m. Ross coral was found to be in the greatest abundance at 50'37.90N 01'55.00W. The largest colonies seen (50cm diameter) were in the area of more extensive chalk outcrops and ridges. The cobbles, small boulder and chalk ridges, that provide the most suitable substrate for attachment, change to gravel and sand, both unsuitable for the attachment of Ross coral, to the north (Poole Bay) and to the south (Swanage Bay) of the main survey area. The deeper water (>20m) to the west of the survey area has not yet been explored but its likely that Ross coral should occur if there is suitable substrate. Underwater photography was used extensively.
dataset
MRLRC00100000533
eng
urn:ogc:def:crs:EPSG::27700
biota
imageryBaseMapsEarthCover
biota
revision
2008-01-06
creation
2011-02-16
creation
2003-01-01
creation
2011-07-06
revision
2009-11-16
-1.9332
-1.8826
50.6556
50.6264
creation
2009-06-18
Eastern Channel
creation
2009-05-01
29E7
creation
2009-05-01
30E7
creation
2009-05-01
29E8
creation
2009-05-01
30E8
creation
1954-01-01
English Channel
revision
2010-01-01
benthic boundary layer
1995-05-05
1995-10-18
publication
2013-02-12
notPlanned
Survey run by Canford School, Dorset. These records all relate to "Powell (ed) (1995) - Ross Coral Mapping Project 1995". A copy of the report is held at English Nature (Dorset Team). Following on from the survey work carried out in 1994, thirteen survey dives were undertaken in 1995 to provide further information on the extent of the Ross Coral colonies between Handfast Point and Ballard Point. Drift dives were used to make transects of the area. GPS/Decca navigation on the charter vessel Sea Ranger was used to pinpoint the position of divers at the start, during and at the end of the dive (following the diver's Surface Marker Buoy). The majority of dives were made at a working depth of 15-20m. Ross coral was found to be in the greatest abundance at 50'37.90N 01'55.00W. The largest colonies seen (50cm diameter) were in the area of more extensive chalk outcrops and ridges. The cobbles, small boulder and chalk ridges, that provide the most suitable substrate for attachment, change to gravel and sand, both unsuitable for the attachment of Ross coral, to the north (Poole Bay) and to the south (Swanage Bay) of the main survey area. The deeper water (>20m) to the west of the survey area has not yet been explored but its likely that Ross coral should occur if there is suitable substrate. Underwater photography was used extensively.
Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced.
No restrictions to public access
Headmaster
Canford School
originator
Data Manager
Natural England
Northminster House
Peterborough
PE1 1UA
+44 (0)845 600 3078
+44 (0)1733 455103
enquiries@naturalengland.org.uk
custodian
Marine Data Manager
Natural England
Northminster House
Peterborough
PE1 1UA
+44 (0)845 600 3078
+44 (0)1733 455103
enquiries@naturalengland.org.uk
custodian
Living Seas Manager
Dorset Wildlife Trust
pointOfContact
2016-11-15