USE OF RIVER HABITAT SURVEY TO DETERMINE THE SPAWNING HABITAT CHARACTERISTICS OF TWAITE SHAD (ALOSA FALLAX FALLAX).

Knowledge and Management of Aquatic Ecosystems

关键词: Alosa fallax fallax;    spawning habitat;    River Habitat Survey;   

DOI  :  10.1051/kmae:2001027

来源: DOAJ

【 摘 要 】

The spawning habitat of twaite shad comprises a fast-flowing shallow area of unconsolidated gravel/pebble and/or cobble substrate. The River Habitat Survey flow types « smooth flow », « rippled flow » and « unbroken standing waves » were significantly (P < 0.05) associated with the presence or absence of shad eggs. The presence of eggs was significantly associated with the higher energy flow types « rippled flow » and « unbroken standing waves », and the absence of eggs was significantly associated with the lower energy flow type « smooth flow ».

【 授权许可】

Unknown