About this book
This book is based largely on the information in the original edition, which was made available by the Cornish Biological Records Unit (CBRU), which closed in 1996. Since that time, wildlife recording in Cornwall and the Isles of Scilly has been served by the Environmental Records Centre for Cornwall and the Isles of Scilly (ERCCIS), which is the successor body to the CBRU. ERCCIS has supported this book by making information available. In addition, information has also come from ERICA (Environmental Recording In Cornwall Automated), which originated as the CBRU database created by Colin French in 1985 and supported by him since the CBRU closed down. ERICA now contains nearly two million records and is supported by ERCCIS. A number of other specialist group databases (referred to in the chapter introductions) have provided additional valuable information and we are grateful for access to these sources.
The book is in two main sections: the terrestrial/freshwater section and the marine section. Many of the main taxonomic groups are covered in this book although the Ephemoptera, Plecoptera, Neuroptera, Megaloptera and Mecoptera have been omitted from the insect section because of the scarcity of reliable data. New accounts include the sawflies whilst almost all other sections have been substantially updated and/or extended.
Regional Distribution = distribution within the region of Cornwall and the Isles of Scilly.
Habitat & Ecology = notes on habitat and ecology, especially within the region.
Threats = degree and type of threat, where known.
Conservation = suggested conservation measures, presence in protected areas and statutory protection. Species with a Biodiversity Action Plan (2007) are highlighted under this heading.
The Isles of Scilly are technically within vice county (VC) 1, but the abbreviation IOS is used to distinguish between VC1 and the islands. The Sea Areas 18,19 and 20 are given where relevant. The marine division between Devon and Cornwall is deemed to run down the centre of the Tamar and records from Plymouth Sound could be from either Devon, Cornwall or both.
AONB = Area of Outstanding Natural Beauty
BAP = Biodiversity Action Plan (JNCC, 2007)
BTCV = British Trust for Conservation Volunteers
CBRU = Cornish Biological Records Unit (Closed December 1996)
CRoW = Countryside & Rights of Way Act 2000, which covers England and Wales but not Scotland, see WCA
CWT = Cornwall Wildlife Trust
ELWS = extreme low water spring (tide)
ERICA = Environmental Recording In Cornwall Automated
ERCCIS = Environmental Records Centre for Cornwall and the Isles of Scilly (established January 1997)
IUCN = International Union for Conservation of Nature
JNCC = Joint Nature Conservation Committee, Peterborough
MarLIN = The Marine Life Information Network for Britain & Ireland based at MBA
MBA = Marine Biological Association of the United Kingdom, Plymouth
MHWN = mean high water neap (tide)
MOD = Ministry of Defence
MTL = mid-tide level
NBN = National Biodiversity Network
NFBR = National Federation for Biological Recorders
NNR = National Nature Reserve
NT = The National Trust
SAC = Special Area of Conservation
SAP = Species Action Plan (JNCC, 2007)
SPA = Special Protection Area
SSSI = Site(s) of Special Scientific Interest
VMCA = Voluntary Marine Conservation Area
WCA = Wildlife and Countryside Act 1981 also Wildlife and Countryside (Amendment) Act 1991 (ref. sections 5 and 11). See also CRoW Act 2000
Conservation categories (unless stated in specific section) and location/area
RDB = Red Data Book
RDB1 = Endangered
RDB2 = Vulnerable
RDB3 = Rare
RDBK = RDB insufficiently known
RDBI = RDB indeterminate
N = (Nationally) Notable
Na = Nationally Notable A
Nb = Nationally Notable B
NS = Nationally Scarce
LS = Locally Scarce
p (as in pRDB, pNS) = provisionally adopted in this book as a candidate RDB species
VC1 = vice county 1
VC2 = vice county 2
IOS = Isles of Scilly
SA18 = Sea Area 18 = Plymouth (West Channel) -Start Point to Lands End
SA19 = Sea Area 19 = Scilly Isles
SA20 = Sea Area 20 = North Cornwall-Lands End to Hartland
Other abbreviations e.g. NU - Nationally Uncommon (dragonflies) are given where necessary in each chapter.