- artificial spawning ground
-
any structure deliberately put into a water body to encourage or facilitate fish reproduction
Dictionary of ichthyology. 2009.
Dictionary of ichthyology. 2009.
Fish migration — Many species of salmon are anadromous and migrate long distances up rivers and streams to spawn. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres… … Wikipedia
clupeiform — ▪ fish Introduction any member of the superorder Clupeomorpha, a group of bony fishes (bony fish) with one living order, the Clupeiformes, that contains some of the world s most numerous and economically important fishes (fish). The order… … Universalium
American shad — Watercolor of an American shad by Sherman F. Denton, 1904. The swelling between the anal fin and ventral fin identifies this as a pregnant female. Scientific classification Kingdom … Wikipedia
Finland — /fin leuhnd/, n. 1. Finnish, Suomi. a republic in N Europe: formerly a province of the Russian Empire. 5,109,148; 130,119 sq. mi. (337,010 sq. km). Cap.: Helsinki. 2. Gulf of, an arm of the Baltic, S of Finland. * * * Finland Introduction Finland … Universalium
Internet — /in teuhr net /, n. a large computer network linking smaller computer networks worldwide (usually prec. by the). [1990 95] * * * Publicly accessible computer network connecting many smaller networks from around the world. It grew out of a U.S.… … Universalium
Bijlands Kanaal — It is currently by far the most important river stretch of the Rhine when that major river enters the Netherlands.It was dug between 1773 and 1776 to cut off a large bend in river Waal to improve water regulation. This bend, and comparable waters … Wikipedia
Coast — For other uses, see Coast (disambiguation). A coastline or seashore is the area where land meets the sea or ocean.[1] A precise line that can be called a coastline cannot be determined due to the dynamic nature of tides. The term coastal zone can … Wikipedia
Wetland — For other uses, see Wetland (disambiguation). The Florida Everglades massive wetland system in the United States saw 1.7 billion gallons of fresh water flushed from it daily and pumped into the ocean following one of the most successive water… … Wikipedia
dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a … Universalium
Dam — /dam, dahm/, n. (Carl Peter) Henrik /kahrl pee ter hen rik/; Dan. /kahrddl pay teuhrdd hen rddik/, 1895 1976, Danish biochemist: Nobel prize for medicine 1943. * * * I Barrier built across a stream, river, or estuary to conserve water for such… … Universalium