The Armstrong Redwood State Natural Reserve in Guerneville, a popular destination for locals and out-of-town visitors alike, has been incorporated into the nationwide Old-Growth Forest Network, a project aimed at protecting and promoting old growth forests around the country. The 805-acre reserve was dedicated Friday, becoming one of more than 185 forests in 32 states, primarily in the northeast and east, to receive the designation from the 11-year-old nonprofit network thus far. There are now 16 in California. …The hope eventually is to identify an old-growth landscape in every U.S. county that has one and can sustain it to ensure they are acknowledged and treasured for their rare longevity, complex beauty and ecological benefits, said Noelle Collins, southwest regional manager for the network.