307029af5abc681086d58ed02b380030 English 147ced866b31eede9d8f6d8750fd9e14 dataset Data Archive for Seabed Species and Habitats (DASSH) Data Manager 01752 633102 01752 633291 Marine Biological Association of the UK, The Laboratory, Citadel Hill Plymouth PL1 2PB dassh.enquiries@mba.ac.uk pointOfContact 2019-08-16 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::27700 2002 Isles of Scilly Seabird numbers and breeding success 2002-12-31 publication 2002-01-01 creation 2008-12-31 revision SCILLYATBI00034 http://dassh.ac.uk/ Species presence data collated as part of the Scillies ATBI project Richard M. Warwick The Environment Agency (EA) Rio House Waterside Drive Aztec West Almondsbury BS32 4UD enquiries@environment-agency.gov.uk originator Paul Somerfield Plymouth Marine Laboratory (PML) Ecologist +44 (0)1752 633 100 +44 (0)1752 633101 Prospect Place The Hoe Plymouth PL1 3DH pjso@pml.ac.uk custodian continual Database Documents Marine Environmental Data and Information Network Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Habitats and biotopes INSPIRE THEMES 2011-02-16 creation Bird counts Bird reproduction SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Released under DASSH terms and conditions otherRestrictions Released under DASSH terms and conditions https://www.dassh.ac.uk/terms-and-conditions English biota Charting Progress 2 Sea Areas 2009-06-18 creation Western Channel and Celtic Sea -6.4984 -6.1688 49.8132 50.0254 2002-01-01 2002-12-31 Data Archive for Seabed Species and Habitats (DASSH) Data Manager 01752 633102 01752 633291 Marine Biological Association of the UK, The Laboratory, Citadel Hill Plymouth PL1 2PB dassh.enquiries@mba.ac.uk distributor dataset UK Nature Conservarion Report No 27 by R.A. Mavor, M. Parsons. M. Heubeck, G. Pickerell and S. Schmitt on seabird numbers and breeding sucess in the Isles of Scilly from 2002. REPORT SUMMARY This report presents the results of monitoring of seabird populations and breeding performance throughout Britain and Ireland in 2002 and makes comparisons with previous years. The report is produced annually as part of the JNCC's Seabird Monitoring Programme, in collaboration with the Royal Society for the Protection of Birds (RSPB) and the Shetland Oil Terminal Environmental Advisory Group (SOTEAG). Some findings of particular note in 2002 are summarised below: Numbers of breeding red-throated divers were similar to those recorded in 2001. Breeding success in Shetland was higher than in 2001, while in Orkney it was lower than in 2001; in both regions success was above the long term average. Few data were received on Manx shearwater in 2002. Breeding success on Rum was the highest since 1997, while further confirmation was obtained of the species’ demise on Canna. Productivity was high on Bardsey but again low on Skomer (although around average for the colony). Numbers of European shag nests generally increased or remained stable in 2002, compared with 2001, except in Shetland, north-west Scotland and north-east England, where numbers at monitored colonies declined. The important colony on Canna was smaller than at any time since 1986 and productivity there was low. Fair Isle, Isle of May and Bardsey recorded their most productive seasons, Sumburgh Head its second most productive. The recorded number of breeding Mediterranean gull fell between 2001 and 2002, due partly to an incomplete count of one of the larger colonies and to a high proportion of non-breeding at the large Langstone Harbour colony, probably caused by low food availability. The species bred successfully in Northern Ireland for the first time. An ongoing study in western Scotland provided further information on the effect of mink predation on the productivity of gulls: breeding success was reduced by a mean of 44% in herring gulls and 57% in mew gulls over the last 6-7 years Surveys of several large colonies of Atlantic puffin were undertaken in 2002. Numbers declined at Hermaness, increased on Coquet and remained stable on North Rona and Lunga (compared with surveys in 1997, 2001, 1993 and 2001, respectively). Successful breeding was confirmed on Ailsa Craig for the first time in decades following the eradication of rats in the early 1990s. As in 2001, several species in Shetland had a poor breeding season in 2002, largely attributed to reduced availability of sandeels, although food appeared to be abundant for Orkney breeders. Both great skua and Arctic skua numbers declined (whereas in Orkney they increased) and productivity of great skuas on Fair Isle was the lowest on record and low at other Shetland colonies. Numbers of breeding black-legged kittiwakes continued to decline: the number within 18 colonies decreased by 39.6% between 1999 and 2002 and productivity was again low, with failures largely occurring at the egg stage. Arctic terns had a very unproductive season in 2002, yet birds on Orkney had their most successful season on record. Counts of common guillemots at study plots in Shetland (except Fair Isle) showed marked declines between 2001 and 2002 and the population index for the region was equal to the lowest recorded during the duration of the SMP. Productivity and weights of chicks at Sumburgh Head were low.