EN REPORT (SCIE) F&B (3529b) - FreshwaterLife

More documents

Recommendations

Info

7.10 Current and future trends in range and abundance ..........................................29 8. Conclusions..................................................................................................................33 9. Acknowledgements......................................................................................................33 10. Bibliography (including publications cited in the database)........................................33 Appendix 1. Categories for species listing .............................................................................65 Appendix 2. Terrestrial and marine regions of England.........................................................67 Appendix 3. EUNIS typology of habitats (level 2).................................................................69 Appendix 4. Headings in database..........................................................................................71 Appendix 5. Species found only in gardens............................................................................78
1 Introduction Invasive non-native species are the second most significant cause of biodiversity loss on a global scale and probably the most significant cause of loss in simplified ecosystems such as oceanic islands (Williamson 1981). The threat from non-native species is increasing with the continued growth of global trade and tourism. Most non-native species are not invasive since they do not pose a significant threat to biodiversity (Williamson 1996). Indeed, only a small minority of non-native species are invasive and threatening. To understand the magnitude of the threat in England, we need data on the flora and fauna of non-native species, including those that are currently invasive, as well as those that invaded in the past or are likely to do so in the future. A first step is to make a list of non-native species. Indeed, monitoring the biota is seen as one of the three key stages in the process for dealing with invasive species agreed under the Convention on Biological Diversity (CBD). However, despite the generally excellent recording systems for many taxa in Great Britain, non-native species have often been underrecorded during ecological surveys and distributional inventories. Many naturalists view nonnatives as not worth recording, or have recorded them systematically only in recent years. The recognition of introduced species is often problematical, and a critical approach is needed in assessing historical trends in species frequency because of changes in recording practice. As well as problems of under-recording, data for many non-native species are held by various government agencies, county recorders, wildlife trusts, campaigning organizations and professional bodies across the UK devolved administrations. Furthermore, there are also limitations on the release of commercially sensitive data on some species (eg plant pests). These factors add to the complexity and cost of collating data. A definitive list of non-native species in the UK does not exist. This would require an extensive audit of existing non-native species across all relevant taxa in all environments. Even if available, an audit that includes the potential risk each species poses would be needed to allow policy makers to prioritise which species require action or further research. It should also facilitate a gap analysis to identify conspicuous gaps in current knowledge or monitoring capacity. As a step in this direction, we have prepared this audit of non-native species in England. 2 Aims The aim of the present project is to document the occurrence of non-native taxa in England, distinguishing those that are increasing or likely to increase from others that do not at present appear to be invasive. All multicellular organisms have been included, as well as a few micro-organisms. A mere list of names and trends would be useful but would be impossible to interpret without further information. At the very least, one needs to know the taxonomic group (eg mammals, ferns, molluscs), the date and pathway of introduction, the native range and the present geographical distribution, supported by bibliographic references as to where the information was obtained. 9
Page 1: Report Number 662 Audit of non-nati
Page 5 and 6: Summary This paper presents the res
Page 7: Contents Summary 1. Introduction...
Page 11 and 12: Together with these major sources,
Page 13 and 14: iogeographical boundary between nor
Page 15 and 16: Table 1. British Ornithologists’
Page 17 and 18: 5.10.1 Archaeophytes Non-native arc
Page 19 and 20: addition, the taxonomy of many grou
Page 21 and 22: introduced species in uncertain, ei
Page 23 and 24: Table 4. Numbers and proportions of
Page 25 and 26: cat, ferret and goat. Almost all th
Page 27 and 28: The category of species that are ex
Page 29 and 30: Table 12. Economic and ecological e
Page 31 and 32: Table 14. Trends in range and abund
Page 33 and 34: 8 Conclusions The audit of aliens s
Page 35 and 36: ATKINS, S.M., JONES, A.M., & GARWOO
Page 37 and 38: BLACKMAN, R.L. 1984. Two species of
Page 39 and 40: CARTER, J., & LEONARD, B.P. 2002. A
Page 41 and 42: COX, M.L. (in prep.). Atlas of Chry
Page 43 and 44: ELLIS, J.P. 1977a. The genera Trich
Page 45 and 46: GIBSON, D.I. 1993. Monobothrium wag
Page 47 and 48: HASLE, G.R. 1983. Thalassiosira pun
Page 49 and 50: ING, B. 1985. Pisolithus in Ireland
Page 51 and 52: KLAAR, M., COPP, G.H., & HORSFIELD,
Page 53 and 54: MARQUISS, M., and others. 2003. Con
Page 55 and 56: NBN SPECIES DICTIONARY. 2005. Avail
Page 57 and 58: PRESTON, C.D., PEARMAN, D.A., & DIN
Page 59 and 60:
SHARROCK, J.T.R., ed. 1976. The Atl
Page 61 and 62:
STRAW, N.A., & BELLET-TRAVERS, M. 2
Page 63 and 64:
WELCH, R.C. 2000. Phytomyza hellebo
Page 65 and 66:
Appendix 1. Categories for species
Page 67 and 68:
Appendix 2. Terrestrial and marine
Page 69 and 70:
Appendix 3. EUNIS typology of habit
Page 71 and 72:
Appendix 4. Headings in database Th
Page 73 and 74:
(earliest) and Date 2 (latest). Pre
Page 75 and 76:
Direct economic value Valued animal
Page 77 and 78:
NM Moore PJC Chandler RH Hammon RHA
Page 79 and 80:
Scientific name Common name Comment
Page 81 and 82:
Paurocotylis pila an ascomycete Rec
show all

EN REPORT (SCIE) F&B (3529b) - FreshwaterLife

Create successful ePaper yourself

Delete template?

Save as template?