With two Championship games still remaining for the Pilgrims to see out, Mariner said he would endeavour to make sure the club finish the season on a high.
"We need to go to [Nottingham] Forest and win, and Peterborough need to come here and we need to beat them," he added.
"We need to finish off on a high to show our fans that we are determined to bounce back."
And signalling his intention to stay and bring Championship football back to Devon, the 56-year-old said: "We obviously need to look at the staff and we need to address certain situations, hopefully I'll be asked to do that. I want to do it."
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