SMALL STREAMS: Contribution to populations of trout and sea trout.
Report of a workshop held at Carlingford, Co. Louth, Ireland on 27 and 28 November 2012 |
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Trout populations in small streams
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- 12/ The workshop also concluded that we needed to improve our understanding of the complexity of interactions between fish communities in small streams, including interactions between separate populations of the same species. A relevant factor is the variation in spawning locations, in terms of access, competition between and within species and food availability. Data from the Burrishoole system illustrates the genetic complexity of the population structure within a relatively small catchment, with individual streams making different contributions to the overall composition of the catchment stocks, and with ratios between brown and sea trout varying within these separate populations. The workshop agreed that more genetic analysis was needed to ascertain population structures of migratory and resident trout within catchments, including small streams.
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