"So we must not, and we will not be ignored when it comes to global decision-making to deal with climate change."
But he pointed out that it was Pacific islands that had been instrumental in concluding the tough global negotiations that saw the Paris Agreement created.
"It was the tireless work of Pacific leaders and their delegations that made the world see climate change through the eyes of vulnerable island communities," he said.
"Those efforts were decisive in the Paris Agreement including a goal to pursue efforts to limit warming to 1.5C."
Now, he said, it was essential that the momentum of Paris maintained as nations again prepared to meet in Poland at the end of the year for the next UN summit.
While most of the 200 nations committed to the agreement each created less than one per cent of the world's emissions, Shaw didn't see this being ant reason for inaction.
"For those countries – which includes New Zealand, and includes Pacific Island countries – whilst our individual contribution to total emissions is small, together we make up more than 20 percent of global greenhouse gases.
"Being small is no excuse for inaction. Quite the opposite: it gives us the opportunity to be world leaders by taking action.
"We need to be a part of the global economic transformation that is under way and which is not going to be reversed, and we need to seize our share of the opportunities that can come from that transformation."
New Zealand, which could have an ambitious Zero Carbon Act in place by the end of this year, recently upped its support in the region, with tackling climate change a priority for more than $700 million of new development co-operation funding to be spent over the next four years.