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Relationship between the yield of bream, Abramis brama L., chlorophyll‐a concentration and shore‐length: water area ratio in Lake Balaton, Hungary
Author(s) -
BIRÓ P.,
VÖRÖS L.
Publication year - 1988
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1988.tb00333.x
Subject(s) - shore , biology , fishery , yield (engineering) , chlorophyll a , catch per unit effort , deep water , chlorophyll , fish <actinopterygii> , oceanography , botany , geology , materials science , metallurgy
. The strong relationship found between the yield of bream, Abramis brama L ., the average chlorophyll‐a concentration of the water and the shore‐line:water area ratio of the various parts of Lake Balaton can be described mathematically. Such a descriptive model seems to be suitable for the estimation and rough prediction of the bream yield. The regional differences between the bream yields within the lake are caused to a large extent by morphometric features, and to a lesser extent by the cholorophyll‐a concentration. A 10‐fold increase in the chlorophyll‐a content results only in a twofold increase in bream yield expressed in catch per unit of effort (CPUE); however, the shore‐line:water area ratio has a much stronger effect.