constraints upon the response of fish and crayfish to environmental flow releases in a regulated headwater stream network. | in dry climate zones, headwater streams are often regulated for water extraction causing intermittency in perennial streams and prolonged drying in intermittent streams. regulation thereby reduces aquatic habitat downstream of weirs that also form barriers to migration by stream fauna. environmental flow releases may restore streamflow in rivers, but are rarely applied to headwaters. we sampled fish and crayfish in four regulated headwater streams before and after the release of summer-autumn en ... | 2014 | 24647407 |