spawning survey
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egg survey — the abundance of eggs and larvae in an area, determined by sampling with appropriate gear, e.g. small meshed midwater trawls, plankton nets, bamboo traps. Used to estimate the size of the spawning stock and/or the importance of spawning … Dictionary of ichthyology
carcass survey — a method used to estimate numbers of spawning salmon from the carcasses of recently spawned fish. A representative number of carcasses are tagged, returned to the river, and the number of tagged and untagged carcasses observed during subsequent… … Dictionary of ichthyology
snorkel survey — a method using by divers with snorkels to estimate fish abundance, especially spawning fish … Dictionary of ichthyology
Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… … Wikipedia
San Joaquin River — Coordinates: 38°04′00″N 121°51′04″W / 38.0666667°N 121.85111°W / 38.0666667; 121.85111 … Wikipedia
Shorthead Redhorse — (Moxostoma macrolepidotum) Scientific classification Kingdom … Wikipedia
Columbia River — Coordinates: 46°14′39″N 124°3′29″W / 46.24417°N 124.05806°W / 46.24417; 124.05806 … Wikipedia
echinoderm — /i kuy neuh derrm , ek euh neuh /, n. any marine animal of the invertebrate phylum Echinodermata, having a radiating arrangement of parts and a body wall stiffened by calcareous pieces that may protrude as spines and including the starfishes, sea … Universalium
Yellowfin whiting — Taxobox name = Yellowfin whiting status = LC image width = 240px regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Perciformes subordo = Percoidei superfamilia = Percoidea familia = Sillaginidae genus = Sillago species = S.… … Wikipedia
Chilkoot Lake — Looking up the Chilkoot River valley and at Chilkoot Lake from the Takshanuk Mountains Location Haines Borough, Alaska, USA … Wikipedia
