NC Marine fisheries management subject to litigation: debated here

For every pound of shrimp caught in North Carolina waters by shrimp trawls, four pounds of finfish and other marine life are caught, killed, and shoveled overboard. – The North Carolina Wildlife Federation

From last time

Discuss factors and interactions from last time. Then how did it go for the analysis?

On the basis of the two graphs for this analysis, discuss the following:

Select four species that are increasing and four that are decreasing. Based on their interactions with SST, describe how their increases or declines are affected by temperature.

Here are the interactions involving SST:

load( 'gjamLongLine.rdata' )
orderPlot( vnames = c('SST','yr','SST:yr'), out )

Interactions involving SST show the tendency for high-salinity species to be increasing over time.

The three seasons in the second graph have coefficients that are relative to a reference class, i.e., the one that is not shown, the spring season seasonAMJ. Select three strongly seasonal species, and use coefficients to speculate on why they might be increasing or decreasing.

Here are the year and season effects:

orderPlot( vnames = c('yr','seasonJAS','seasonJFM','seasonOND'), out )

Species that are increasing (positive year effect) do not show clear seasonal differences.

For today and next time

The state of North Carolina is being sued over its failure to manage marine fisheries in a sustainable way. The suit is brought by private citizens, including former members of the NC Marine Fisheries Commission, together with the Coastal Conservation Association of North Carolina.

We will choose sides and debate the issues in this case. Work in groups to divide up resources and prepare for opening statements and rebuttals. By the end of today’s meeting you will need to converge on the core arguments you will use in the debate. Post an outline of your main points to Sakai.

Next time we will report to the class on the background to this case. Include the following: