wetland ice winter pond snow fens meadow, drone aerial lowland swamp hrdiboricke ponds icy frozen, endangered habitat

wetland ice winter pond snow fens meadow drone aerial swamp lowland hrdiboricke ponds icy frozen endangered habitat natural monument reed common broadleaf cattail bulrush cold drought dry dries europe great reedmace typha icebound desert ground global warming threat desiccation national snowy reserve czech ecology environment field grass land nature plant