The scenic images that Louisiana brings to mind -- moss-draped cypress, lush marshlands, alligators gliding through bayous, herons coasting across an open sky -- all spring from one of the most diverse and productive ecosystems on the continent. This varied and inviting landscape gives rise to one of the state's many monikers, Sportsman's Paradise, which rings true whether you are boating on picturesque Lake Martin or bird-watching among the ancient...