Stream support monitoring, Salisbury Plain
Pisces Conservation were asked to carry out monitoring work on a chalk stream on the southern edge of Salisbury Plain in Wiltshire. In order to mitigate low natural flows in summer, the stream was augmented by water pumped from a borehole, to support flow rates, and hence fish, invertebrate and plant populations, in the lower reaches of the stream.
Pisces were required to survey macrophytes (particularly water-crowfoots, Ranunculus spp.), macroinvertebrates, molluscs and fish, to assess whether biodiversity was affected by stream augmentation.
Detailed macrophyte surveying was carried out along the entire length of the stream, with point surveys, including electric fishing, invertebrates and molluscs. In addition a separate survey on the status of Ranunculus spp. in the stream was undertaken.
Pisces staff have considerable experience in freshwater macroinvertebrate ecology, botanical surveying, and electric fishing, as well as statistical methods for analysis of survey data.