Porcupine Newsletter Number 25, Winter 2008/09.

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Diversity of intertidal non-nativespecies in WalesKathryn BirchCountryside Council for Wales, Maes yFfynnon, Ffordd Penrhos, Bangor, LL57 2DWThis talk will look at the non-native species foundon the Welsh intertidal. Most of the informationwas gathered during the Welsh intertidal surveycarried out by CCW between 1996 & 2006 withsome additional information to bring the story upto date.Fourteen non-native species have been recordedon the Welsh intertidal spread across the differenttaxonomic groups: 5 algae, 4 molluscs, 1 polychaete,1 anemone, 1 ascidian, 1 barnacle and 1 crab asshown in table 1.Four of the more invasive species will be looked at inmore detail: Japanese wireweed Sargassum muticum,non-native oysters Crassostrea gigas and Tiostrealutaria cultivation and the recent introduction in2006 of America slipper limpet Crepidula fornicatainto the Menai Strait with mussel seed and subsequentaction taken to deal with the problem.A full write-up of the intertidal survey includinga section on non-native species can be found in‘Wyn, G., Brazier, P., Jones, M., Lough, N., Birch,K., Bunker, A. and Brunstrom, A. 2007. When thetide goes out: the biodiversity and conservationof the shores of Wales, CCW’.Table 1 Non-native species recorded on the Welsh intertidal.Species nameElminius modestusTypeBarnacleNo. sites197Codium fragile subsp. tomentosoides Green alga 30*Mya arenaria Mollusc 28Crepidula fornicata Mollusc 26Colpomenia peregrina Brown alga 24Sargassum muticum Brown alga 10Styela clava Ascidian 9Crassostrea gigas Mollusc 7Antithamnionella spirographidis Red alga 2Ficopomatus enigmaticus Polychaete 2Haliplanella lineata Anemone 1Solieria chordalis Red alga 1Tiostrea lutaria Mollusc 1Eriocheir sinensis Crab Not recorded in intertidal survey* Included records of the green algae Codium fragile and Codium fragile subsp. tomentosoides because not allspecimens were collected for subspecies identification.30PMNHS Newsletter No.25 Winter 2008/09
Instructions to AuthorsAlthough we can deal with most methods and styles of presentation, it would make our editoriallives easier if those wishing to contribute to the Newsletter could follow these guidelines. Pleasesubmit all material in electronic format if at all possible either by e-mail or disc/CD. Hard copy canalso be accepted provided it is not too long!TextPlease submit your paper, article, request for information etc. as a Word document.Fonts, spacing etc. - general text: Times New Roman 12 point, single spacingDo not include illustrations within the text (see below). You can insert placeholders toindicate how illustrations should be placed e.g. Insert Fig.1 hereDo not leave a space between paragraphs.Do not add page numbers or anything else as headers or footers.Illustrations (Figures and Plates)Photographic images should be supplied as greyscale or colour (RGB) JPGs with a resolution of 300pixels per inch and width of 7cm. Save at high quality.Line drawings, particularly maps, are best supplied as WMF files. If it is a detailed map which willneed the full page width, save it with a width of 15cm. Maps with complicated colouring schemeswill not reproduce well in black and white.Graphs, histograms etc are best supplied as Excel files – save each graph as a separate sheet.We can scan good quality photographs, transparencies and hard copies of drawings.For each illustration submitted provide the following information:Filename Caption Photographer (if appropriate)Please be aware of any copyright issuesReferencesDo not leave a line space between references. Please follow the examples below for format. Journaltitles should be cited in full.Brown, M. T. and Lamare, M. D. 1994. The distribution of Undaria pinnatifida (Harvey) Suringar withinTimaru Harbour, New Zealand. Japanese Journal of Phycology 42: 63-70.Dipper, F. A. 2001. Extraordinary Fish. BBC Worldwide Ltd. 96pp.If all this is thoroughly off-putting, just send whatever you have got and we will do our best withit!!
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Porcupine Newsletter Number 25, Winter 2008/09.

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