pool fishway

См. также в других словарях:

• pool-and-weir ladder — a series of small dams making pools of regular length in a long, sloping channel for fish to travel around a dam. Fish jump from pool to pool in the ladder. See also rock ramp fishway, vertical slot fish passage and DeNiel fishway …   Dictionary of ichthyology

• rock-ramp fishway — a structure allowing fish to pass a barrier. Large rocks and timbers are used to build pools and small falls that mimic natural structures. This fishway only works over short distances because of the length of the channel needed for the ladder.… …   Dictionary of ichthyology

• DeNiel fishway — a chute with lateral baffles that reduce the water s energy and leave a clear passage for fish to swim over the low barrier. There are no resting areas although pools may be provided for this purpose or to reduce flow velocity. See also pool and… …   Dictionary of ichthyology

• Fish ladder — Fishways, most commonly called fish ladders but also known as fish passes and in Australia also referred to as fish steps, are structures on or around artificial barriers (such as dams and weirs) to facilitate diadromous fishes natural migration …   Wikipedia

• vertical slot fish passage — this fishway is similar to a pool and weir ladder except that each dam has a narrow slot in it near the channel wall. The channel allows fish to swim upstream without having to leap over the dam wall. This type of …   Dictionary of ichthyology

• List of energy abbreviations — This is a list of abbreviations found in the context of energy issues. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y …   Wikipedia

• Fox-Wisconsin Waterway — The Fox Wisconsin Waterway is a waterway formed by the Fox and Wisconsin Rivers. First used by European settlers in 1673 during the expedition of Marquette Joliet, it was one of the principal routes used by travelers between the Great Lakes and… …   Wikipedia

• Australian bass — Taxobox name = Australian bass regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Perciformes familia = Percichthyidae genus = Macquaria species = M. novemaculeata binomial = Macquaria novemaculeata binomial authority =… …   Wikipedia

• Échelle à poissons — Une échelle à poissons ou passe à poissons est un dispositif permettant aux poissons de franchir un obstacle créé par l Homme sur un cours d eau, généralement un barrage ou un seuil. Il s agit généralement d un dispositif en escalier où le… …   Wikipédia en Français