This implies that the food web structure and primary productivity are uncoupled in the oligotrophic gyres.
The adoption of automatic couplers was stimulated in some degree by laws enacted by the various states and by the United States; and the Safety Appliance Act passed by Congress in 1893 made it unlawful for railways to permit to be hauled on their lines after the ist of January 1898 any car used for interstate commerce that was not equipped with couplers which coupled automatically by impact, and which could be uncoupled without the necessity for men going in between the ends of the cars.
An uncoupled trailer on a slope can be a disaster waiting to happen.
For example, with current changes in sexual behavior one might consider whether at last the engine is being uncoupled from the evolutionary train.
At the end of a shift the ore-skip is lifted from the shaft track - the hoisting rope being uncoupled - and the man-car put in its place and attached to the rope.