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1. The potential for using photographic methods in ecological monitoring of intertidal rocky shores was investigated at two scales: the scale of a bay, and at sampling quadrat level. 2. The macroalgal beds at Selwicks Bay, Flamborough Head (north Humberside Coast, England) were used as a case...
1. Two experiments were carried out in a Scottish river to test the effects of electrofishing on endangered freshwater pearl mussels (Margaritifera margaritifera). 2. In the first experiment, two areas of mussel bed were marked out as treatment and control sites and the former was electrofished...
1. Traditional community‐based systems of managing coastal fisheries were (or in some cases are) successful in managing resources at sustainable levels. These systems are used as models in the present study. 2. They were (or are) under‐pinned by a sense of ownership and intimate knowledge of the...
1. To the non‐specialist, problems are often associated with the quantification of sponge species diversity, as colour, shape and size can be highly variable within a single species. These variables can lead to an under‐estimation of the contribution of sponges to the biodiversity of the benthos...
1. This paper highlights the recent extinctions of two native Arctic charr populations in the West of Ireland, one population from the Lough Conn catchment, and a second from the Lough Corrib catchment, respectively. 2. The distribution of charr populations in the two catchments is reviewed. The...
1. Adult caddisflies were collected using non‐attracting Malaise traps at four sites on a small headwater stream from May to November 1990. Sites S1 and S2 were most natural and upstream of a reservoir; where S3 was located in the bypass channel, and S4, downstream. 2. The flight period for each...
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