caa a22 4500 477116094 CHVBK 20180405111622.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF00003098 doi (NATIONALLICENCE)springer-10.1007/BF00003098 Effects of spatial scale and foraging efficiency on the predictions made by spatially-explicit models of fish growth rate potential [Elektronische Daten] [Doran Mason, Stephen Brandt] Synopsis: Spatially-explicit modeling of fish growth rate potential is a relatively new approach that uses physical and biological properties of aquatic habitats to map spatial patterns of fish growth rate potential. Recent applications of spatially-explicit models have used an arbitrary spatial scale and have assumed a fixed foraging efficiency. We evaluated the effects of spatial scale, predator foraging efficiency (combined probabilities of prey recognition, attack, capture, and ingestion), and predator spatial distribution on estimates of mean growth rate potential of chinook salmon,Oncorhynchus tshawytscha. We used actual data on prey densities and water temperatures taken from Lake Ontario during the summer, as well as, simulated data assuming binomial distribution of prey. Results show that a predator can compensate for low foraging efficiency by inhabiting the most profitable environments (regions of high growth rate potential). Differences exist in predictions of growth rate potential across spatial scales of observation and a single scale may not be adequate for interpreting model results across seasons. Continued refinements of this modeling approach must focus on the assumptions of stationary distributions of predator and prey populations and predator foraging tactics. Kluwer Academic Publishers, 1996 Bioenergetics nationallicence Chinook salmon nationallicence Oncorhynchus tshawytscha nationallicence Spatial distribution nationallicence Mason Doran Chesapeake Biological Laboratory, University of Maryland, P.O. Box 38, 20688-0038, Solomons, MD, U.S.A. aut Brandt Stephen Great Lakes Center, SUNY College at Buffalo, 1300 Elmwood Ave., 14222, Buffalo, NY, U.S.A. aut Environmental Biology of Fishes Kluwer Academic Publishers 45/3(1996-03-01), 283-298 0378-1909 45:3<283 1996 45 10641 https://doi.org/10.1007/BF00003098 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00003098 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mason Doran Chesapeake Biological Laboratory, University of Maryland, P.O. Box 38, 20688-0038, Solomons, MD, U.S.A aut NATIONALLICENCE 700 1- Brandt Stephen Great Lakes Center, SUNY College at Buffalo, 1300 Elmwood Ave., 14222, Buffalo, NY, U.S.A aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 45/3(1996-03-01), 283-298 0378-1909 45:3<283 1996 45 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer