2015-11-10 - P&O Agenda - Item 7, Attach 1 - Historical Ecology of the Noosa Estuary Fisheries

using two measures: number of fish landed per angler per fishing session, and
number of fish landed per angler per hour of fishing. Linear regression analysis
was performed on each of these measures to determine if significant changes in
catch rates occurred over time.


Catch rates were also compared to determine whether significant differences
existed between a) data source and b) location fished. Catch rates sourced from
newspaper reports of recreational fishing trips, competitions and a government
survey were compared. As the government survey only spanned a period of two
years (1961-62), only recreational catches reported between 1950 and 1970
were compared to the government data source, rather than the whole time
series. The Mann-Whitney test was used to examine whether median catch rates
from two different locations, or from two data sources, were statistically
different. In cases where data were provided from more than two sources, a one-
way Kruskal-Wallis test was performed, with post-hoc tests conducted using
Dunn’s multiple comparisons test.




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