Journal
JOURNAL OF FISH BIOLOGY
Volume 70, Issue 6, Pages 1669-1688Publisher
WILEY
DOI: 10.1111/j.1095-8649.2007.01428.x
Keywords
environmental gradient; fisheries; life history; north-west Atlantic; spatial distribution
Categories
Ask authors/readers for more resources
Multivariate ordination techniques were used to examine how size classes of four flatfish species, American plaice Hippoglossoides platessoides, winter flounder Pseudopleuronectes americanus, yellowtail flounder Limanda ferruginea and fourspot flounder Paralichthys oblongus, are related to bottom depth, bottom temperature, substratum grain size and temporal factors using a 35 year time series from autumn and spring in the Gulf of Maine-Georges Bank region. Depth had the most explanatory value during both seasons in most cases, with fish size generally increasing with depth. One exception was yellowtail flounder in the spring for which a temporal factor explained the most variance, reflecting an increase in size over the time series due to changes in fishing pressure. Temperature was secondarily important for yellowtail flounder in the autumn and for fourspot flounder in both seasons. Substratum type was secondarily important for winter and yellowtail flounders in the spring with smaller fish associated with larger substratum types. Seasonal associations with depth, temperature and substratum are related to seasonal spawning migrations, thermal preferences and other ecological factors. Journal compilation (C) 2007 The Fisheries Society of the British Isles.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available