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Condizione: NEW. 8, 50 photos. . Chart. NEW. . Folding photo-based identification chart. There are 17 species of free-living freshwater leech in Britain and Ireland. Around half of all these can be identified from live animals in the field, while the rest need microscopic examination. Includes a guide to families, then within each family, photographs and species accounts cover field identification where this is possible. [9781908819994].

Condizione: Fine. x, 332, text figs. . HB. Fine copy. Owner's initials to endpaper. Brings together information from fields ranging from physiology through ecology to evolution to consider in a unified manner the challenges facing insect populations in aquatic environments. [9781845933968].

Booklet - Unbound Pages. Condizione: Very Good. 3 pages. An authentic standalone article, extracted from a larger volume. Not a reprint or reproduction, but an original work in its own right. Supplied without title page or cover. Size: 22 x 15 cms. Category: British Association for the Advancement of Science; Cosmo Books : 29 years on ABE, 47 years taking care of customers. A bookseller you can rely on.

Condizione: New. x, 332, text figs. . HB. NEW. . Brings together information from fields ranging from physiology through ecology to evolution to consider in a unified manner the challenges facing insect populations in aquatic environments. [9781845933968].

The AIDGAP Guide to the Freshwater Leeches of Britain and Ireland is a photo-based identification guide for naturalists and enthusiasts. There are 17 species of free-living freshwater leech in Britain and Ireland. Around half of all these can be identified from live animals in the field, while the rest need microscopic examination. This is the first guide to freshwater leeches for many years. ??Leeches live in all types of water bodies, from ditches, streams and rivers to lakes, ponds, canals and wetlands. in general, there are fewer species in running waters than in standing waters. So if you're familiar with pond dipping, then you have probably found freshwater leeches. Often leeches remain clinging to your tray once you have released everything else back to the pond. Hand-searching potential habitats is also a useful collection method. Target sites include the underside of stones, the base of reeds and rushes and the wet surface of leaf litter. Your garden pond is a good place to start! The first stage is to sort leeches into families. There are between one and five pairs of eyes on the upper surface, with the number and arrangement of eyes important for identifying leech families. Then within each family, photographs and species accounts cover field identification where this is possible. Shrewsbury. FSC Publications. 12 pp., 50 color photos and b/w illustrations, folded leporello gr. 8.

Condizione: New. x, 215, line drawings, col photos, distribution maps. . PB. NEW. . Plecoptera (Stoneflies) are an extremely important component of British and Irish freshwaters, and are most common in clean headwater streams and on stony and rocky shorelines of lakes. This book provides keys to both the adult and larvae of the 35 species found in Britain and Ireland. Our freshwater ecosystems are under more pressure than ever from a bewildering array of threats. Keys such as this are a vital tool to support the collection and analysis of robust data and evidence required to enable better and faster conservation action for freshwaters. But this is so much more than a key. It's a comprehensive source of existing and new knowledge for anyone with an interest in freshwater ecology and entomology. [9780900386855].

hardcover. Condizione: Mediocre (Poor). SC686Copertina rigidavolume in discrete condizioni,strappi sulla sovracopertina, illustrato in B/N729 pagine circaCopertina come da foto.