Evaluation of cone fishways to facilitate passage of small-bodied fish

作     者：Ivor G.Stuart Timothy J.Marsden 

作者机构：Arthur Rylah Institute for Environmental ResearchDepartment of EnvironmentLandWater and Planning123 Brown StreetHeidelbergVictoria 3084Australia Australasian Fish Passage Services6 Spinifex StreetFern BayNew South Wales 2295Australia 

出 版 物：《Aquaculture and Fisheries》 (渔业学报（英文）)

年 卷 期：2021年第6卷第2期

页      面：125-134页

学科分类：090801[农学-水产养殖] 082803[工学-农业生物环境与能源工程] 0908[农学-水产] 08[工学] 0828[工学-农业工程] 09[农学] 

基　　金：Production of this paper was supported by the Applied Aquatic Ecology writing retreat initiative Sampling in Queensland undertaken under Animal Ethics Authorisation No.CA2014/08/798 

主　　题：fishway fish migration fish communities Australia tidal barrier Fitzroy River Norman River Maribyrnong River 

摘      要：Fishways are being provided more regularly than ever before and new designs are needed to provide passage for whole fish *** recent progress,fishways have frequently performed poorly,especially for small-bodied fish(i.e.10-100 mm long),which can form large aggregations below stream *** was the genesis for the development of the cone fishway design,a new style of technical fishway which consists of a series of pre-fabricated cone-shaped concrete baffles installed laterally within a concrete *** cone design arose from the need to install rock ramp fishways at remote sites where rock was unavailable and where maintenance would be *** objective of the present study was to evaluate the suitability of the new cone fishway design to provide passage for small-bodied diadromous species(i.e.100 mm long).Cone fishways were evaluated at three low head(e.g.3 m high)case-study sites in tropical and temperate Australia and in total,45 species and 28,556 fish were *** was passage of a broad range of the target size-classes of small-bodied fish and individuals as small as nine mm could ***,further work is needed to quantify the proportion of the small-bodied fish population in the river downstream which find and pass through the cone *** most suitable experimental application of the cone fishway is at sites where there is:(i)a narrow(e.g.0.4 m)headwater range,and(ii)where passage of small-bodied fish is a major ecological *** fishways provide a useful and novel option to improve passage of small-bodied fish,at appropriate sites,and contribute to a contemporary vision of restoration of whole fish communities.