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The NISSAP is a tool aligned with the Guidelines for Invasive Species Management in the Pacific that identifies the strategy and key actions to effectively prevent, manage and reduce the impacts of invasive species to the environment, our economy, culture and health and well-being in Tonga.

Integrated Water Resource Management (IWRM) offers a systematic approach to address the sustainable development, allocation and monitoring of water resources for Pacific island Countries (PICs). The key concept of IWRM is that it provides a framework to integrate societal, economic and environmental considerations in water resource management. It recognises that all water use is interdependent and therefore should be managed in an integrated manner.