We developed a highly sensitive solid-state sensor for mercury detection by stabilizing red-sub-nanometric fluorescent gold nanoclusters (AuNC, 0.9 ± 0.1 nm diameter) with bovine serum albumin in a matrix composed of cellulose nanofibrils (CNF) (BSA-AuNC/CNF). The main morphological and optical features of the system were investigated via atomic force/transmission electron microscopy and UV-Vis/fluorescence spectroscopy. The hybrid film (off-white and highly transparent) showed strong photoluminescene under UV irradiation. The latter is assigned to the AuNC, which also increase the ductility of the emitting film, which was demonstrated for high sensitivity Hg²⁺ detection. When used as a sensor system, following AuNC printing on CNF hybrid films, a limit of detection <10 nM was confirmed. What is more, nanocellulose films have a high pore structure and selective separation properties, showcasing a wide range of potential applications in many fields such as water treatment and oil–water separation.

The Asia-Pacific Network for Sustainable Forest Management and Rehabilitation (APFNet) Fellowship Program, established in 2008, aims to develop future leaders in sustainable forest management (SFM) within the Asia-Pacific region. This study represents the first systematic evaluation of the APFNet Fellowship Program, focusing on its effectiveness in building capacity for forest conservation and management. A mixed-methods approach was employed, combining quantitative pre- and post-program surveys with qualitative interviews and case studies of fellows. Quantitative analysis of survey data from 57 fellows revealed significant improvements in knowledge and skills related to forest conservation and sustainable development. Paired-sample t-tests showed statistically significant increases in the knowledge and abilities of participants, with an average improvement of 23% across key survey domains (t = 5.24, p < 0.05). The analysis also indicated that 95% of participants perceived the program to be highly relevant to their career goals and sustainable development objectives, with 87% reporting strong satisfaction with the quality of learning opportunities. Qualitative data from semi-structured interviews and focus groups revealed that while fellows appreciated the academic rigor and practical training, challenges such as financial limitations, language barriers, and institutional support issues were prevalent. Despite these challenges, fellows expressed strong commitment to applying their training to sustainable forestry practices in their home countries. This study highlights the critical role of the APFNet program in nurturing the next generation of forestry leaders in the Asia-Pacific region. The findings provide a foundation for future evaluations, highlighting the need for continued program refinement to address the identified challenges and maximize the long-term impact on forest conservation.