Valorization of nutrients and CO2 from a recirculating aquaculture system into high-value astaxanthin: A circular bioeconomy approach with Haematococcus pluvialis. - Timilsina, Hemanta; Vesamäki, Jussi S.; Calderini, Marco L.; Hiltunen, Minna; Pirhonen, Juhani; Pulkkinen, Katja (Journal of Applied Phycology, 2026)