It turns out, cemeteries provide really good observational data on climate change:
[T]he value of this greenspace has only grown as the communities around them have densified and urbanized — leaving cemeteries as unique nature preserves. In the case of Mount Auburn, people have consciously planted diverse trees, shrubs, and flowers from all over the world and cared for them tenderly over decades or even centuries. In other cases, though, plants that might otherwise be replaced by foreign varietals can thrive under a cemetery’s more passive management style, like the prairie cemeteries of Illinois, or even the woodsy outerboroughs of New York City.
At Mount Auburn [outside Boston], a team of interdisciplinary scientists now train volunteers in phenological data collection. In the spring, they look for things like bursting buds, insect onset, and the effect of shifting timescales on migratory birds. Later in the year, they monitor the duration of autumn. To ensure accuracy, the specific trees under observation are marked throughout the cemetery; this dogwood, that gingko. And all of this data is shared with the national network. “What we know is that plants are now flowering about two weeks earlier than they did in Thoreau’s time, and trees are also leafing out about two weeks earlier,” Boston University biology professor Richard Primack told local radio station WBUR. “And we know that birds are arriving a couple of days earlier than in Thoreau’s time.” What we learn next will come from the logs Mount Auburn’s team is making now.
Just an aside, I live in an 800-meter-wide neighborhood situated between two large cemeteries. They share a population of coyotes who frequently use the streets and alleys to move between them. This is the closer of the two: