Ryan Martin is stepping down as executive director of the educational conservation organization with 224 acres of woods and fields open to the public near the heart of the city.
Some are experimenting with assisted forest migration, relocating trees from more southerly habitats that might do well in Maine as temperatures rise and drive out native species.
BELFAST, Maine — Aleta McKeage wanders the shady groves and manicured meadows of City Park arboretum like a data-driven grim reaper, pointing out one iconic Maine tree after another that