By J. D. Fish, S. Fish
This targeted, concise and wonderfully illustrated consultant permits scholars to spot over 650 of the typical, common animals and seaweeds of the shore. effortless dichotomous keys are supported by way of information of diagnostic positive aspects and biology of every species. Now greater with 32 pages of color, this a lot acclaimed consultant is useful to scholars of marine biology at any point. Questions corresponding to how does the species reproduce? what's its life-cycle? How does it feed? are responded within the notes accompanying each one species to provide a desirable perception into the range and complexity of existence at the shore. The textual content is supported via an intensive word list of clinical phrases and a finished bibliography is incorporated to assist additional research. The 3rd version builds at the first-class reports of past variations and should proceed to attract a large readership, together with scholars, lecturers and naturalists
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Additional info for A Student's Guide to the Seashore, 3rd Edition
Lactuca is cosmopolitan in distribution and common on the shore, extending into the sublittoral. It is found on stones and rocks and other seaweeds and is common in brackish water habitats. It is commonly found on mud-flats attached to stones and shells, and in sheltered waters the thallus often attains a large size, sometimes becoming detached, the plants surviving as large floating masses. It thrives in areas of nutrient enrichment. The life-cycle is illustrated in Fig. 1. Ulva rigida C. Agardh is morphologically very similar to U.
1. Four pairs of legs; body elongate and divided into sections; spider-like. Among stones, seaweeds, sea-firs, sea-anemones, etc. Middle and lower shore. Sea-spiders (Pycnogonida) p. 299 2. Small, delicate, often transparent, shrimp-like. Legs with 2 branches, lacking pincers. Free-swimming, often in swarms in areas of reduced salinity. Do not confuse with prawns and shrimps under 5 below. Opossum shrimps, mysids (Crustacea: Mysida) p. 312 3. Body shape resembles woodlouse. Seven (rarely 5) pairs of similar legs.
10b Frond compressed or nearly flat, much branched; branching alternate or irregular; larger branches have smaller branches arising alternately; smaller branches characteristically with tiny branchlets arising from one side only, so resembling the teeth on a comb. Rose-pink to dark red in colour, often bleached. Ranging in size from small and turf-like, 25 mm or less in length to bushy growths up to 120 mm in length. Although the genus Plocamium is readily identified and widely distributed, research on molecular and morphological characters suggests that there are four species in northern Europe.