- Data from: Rewetting of drained boreal spruce swamp forests results in rapid recovery of Sphagnum production(2016-06-01) Maanavilja, Liisa; Kangas, Laura; Mehtätalo, Lauri; Tuittila, Eeva-Stiina; University of Helsinki - Maanavilja, Liisa; University of Helsinki - Kangas, Laura; University of Eastern Finland - Mehtätalo, Lauri; University of Helsinki - Tuittila, Eeva-Stiina