Benthic Survey from Sea Lion Field Development North Falkland Licence Areas PL032, PL033 And PL04 Environmental Baseline Survey 2012

In March and April 2012, Gardline Environmental Ltd (GEL) carried out an environmental survey for Rockhopper Exploration Plc (Rockhopper Plc). The survey was conducted in licence areas PL032, PL033 and PL04b, north of the mainland Falkland Islands, from the survey vessels RRS Ernest Shackleton and OSV DP Reel. Accompanying sample coordinates and sampling information for survey can be found in "Sea Lion Field Development North Falkland Licence Areas PL032, PL033 And PL04 March And April 2012 Environmental Baseline Survey - Benthic Survey coordinates"

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Additional Info

Field Value
Last Updated December 14, 2020, 09:52 (PST)
Created January 30, 2020, 05:20 (PST)
Region Falkland Islands
Language eng
Topic Category Biota; flora and/or fauna in natural environment
Temporal Extent Start 2012-03-05
Temporal Extent End 2012-04-26
Dataset Reference Date 2012
Lineage Sample method: 0.25m2 Box corer, Three samples from each "Station" (labelled MFA, MFB, MFC). Issue of pseudo-replication because of sub-sampling a single core and creating two replicates (mostly samples MFB and MFB) Sampling QA/QC sample discarded if: 1) The box core doors open on recovery, causing possible surface washout. 2) Half sample obtained where the corer had not struck a flat area of seabed, or not hit true, causing a side, or half core of sediment. 3) Disruption of the sample by obvious shaking or contamination (these can occur when a sample is badly handled or if the box corer strikes the side of the vessel during operations). 4) The sample represents less than 30% of the box corer's total capacity (i.e. less than 15cm penetration). 5) Sample is >25m from the desired position (as determined by the on-board surveyors), several samples were accepted up to 30m away. 6) The presence of a "Hag Fish" and/or mucus coagulants. 0.1m2 section subsampled, 15cm deep from each box core sample, removed using a plastic scoop into plastic tray and sieved in 0.5mm auto sieve, transferred suing scoop and/or funnel to sample pot. Fixed in <20% formalin, then diluted to 4% Biology samples were placed in 1L polypropylene, screw-top, squat jars or 5L buckets and provided with an additional internal waterproof label. Sorting: samples washed across a 0.5mm sieve sorted by hand (no info on equipment used) and residual checked by 2nd sorter to ensure all animals removed. Benthic macrofaunal identification was undertaken by the Natural History Museum (NHM), London, UK Organism recorded as a juvenile: - Organisms that were too small or immature to be identified to species were identified to the lowest possible taxonomic level and recorded as juveniles. - The organism was in a pre-adult life stage e.g. megalopa, praniza, etc. - For large-bodied (>4cm) species of echinoderm and bivalve, the organism was less than 10% of the maximum body size reported in the literature. Treatment of damaged individuals: - Fragments that constituted a major component of an individual, that unequivocally represented the presence of an entire organism, and that could be identified to species level, were recorded and included with other counts of that species. Examples include: the heads of polychaetes and crustaceans; the complete mouth structure or central disk of brittle stars; the oral area/feeding tentacles of holothurians. - Fragments that constituted a significant component of an individual, that unequivocally represented the presence of an entire organism, but that could not be identified to species by virtue of their incompleteness, were recorded to the lowest possible taxonomic level. - Fragments that did not unequivocally represent the preence of an entire organism were ignored, e.g. Amphiura arms, Echinocardium shell fragments, etc. Species identified to higher taxonomic level: - Nemertea - identified to phylum. - Platyhelminthes - identified to phylum. - Oligochaeta - identified to genus
West Longitude 560500
South Latitude 4528300
East Longitude 570500
North Latitude 4546300
Spatial Reference System TM CM 60W
Responsible Organisation Name Hidden (personal data protection)
Contact Mail Address Hidden (personal data protection)
Responsible Party Role Hidden (personal data protection)
Access Limitations Restricted, send data request to data owner
Use Constraints Restricted, but open subject to limitations and prior agreement with responsible organisation. Copyright must be cited
Resource Reference Restricted
Data Format excel
Update Frequency one off
Accuracy Unknown
Resource Type Dataset
Original Title Hidden (internal use only)
Metadata Date 2015-03-20
Metadata Point of Contact datamanager@saeri.ac.fk
Contact Consent Contact details hidden
Unique Resource ID FK-SAERI-186

Dataset extent

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