@article {Welch2011, title = {Survey of the invertebrate fauna of sand dune and machair sites in the Outer Hebrides during 1976}, journal = {Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci.}, volume = {77}, year = {2011}, month = {dec}, pages = {395{\textendash}404}, publisher = {Cambridge University Press}, abstract = {

During June and July 1976 the Institute of Terrestrial Ecology carried out a limited invertebrate survey on 18 sites in the Outer Hebrides.

Portable battery-operated UV light traps were installed at each site and left to operate for eight nights. Bad weather in June greatly reduced the numbers of Lepidoptera caught. During July moths were trapped at 16 of the sites. Details of the combined catches are given. Pitfall traps were also installed at all sites and all beetles, spiders, harvestmen, snails, millipedes, centipedes and woodlice have been identified. In addition a list of species of littoral Coleoptera recorded from 24 Hebridean localities is given.

This survey was part of a much wider project around the coasts of Scotland, commissioned by the Nature Conservancy Council, to whom a full report will be submitted when identification and analysis of the results has been completed.

}, keywords = {Arachnids, Coleoptera, Dunes, Invertebrates, Lepidoptera, Machair, molluscs, Outer Hebrides}, issn = {0269-7270}, doi = {10.1017/S0269727000012811}, url = {http://journals.cambridge.org/action/displayAbstract?fromPage=online\&aid=8378842\&fulltextType=RA\&fileId=S0269727000012811}, author = {Welch, R. C.} } @article {Ritchie2011, title = {Machair development and chronology in the Uists and adjacent islands}, journal = {Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci.}, volume = {77}, year = {2011}, month = {dec}, pages = {107{\textendash}122}, publisher = {Cambridge University Press}, abstract = {

Several types of machair landforms are found in the Uists (Outer Hebrides) but the most distinctive are low altitude plains. Morphological and stratigraphical evidence suggests that both erosional and depositional processes, operating over a long period of time, have produced these sand plains and other landforms. A vast but relatively finite (partly shell-derived) sand supply was swept landwards across the gentle offshore rock platform assisted by a rising sea level to provide the initial pre-machair coastal accumulation. Phases of development can be dated using archaeological evidence, and 14C dating of offshore peat suggests that initiation probably took place before 5700 BP. Although the evidence is fragmentary, machair development appears to have consisted of long periods of stability, interrupted by episodes of major environmental disturbances. There is also evidence of coastal erosion and associated physiographic changes

}, keywords = {Machair, Outer Hebrides}, issn = {0269-7270}, doi = {10.1017/S0269727000012677}, url = {http://journals.cambridge.org/abstract_S0269727000012677}, author = {Ritchie, W.} }