Summers washington

Models also suggest winters will be wetter. The Department of Health has detected the two main West Nile species of concern — Culex pipiens and Culex tarsalis — nearly everywhere in Washington counties, with the former in all but three counties and the latter represented in all counties, as of In the end, the future of mosquitoes in Washington state is mostly a mystery right now because the resources needed to monitor and analyze their population growth are less available partly because COVID has absorbed the time of public health employees.

And collecting data is labor intensive. You could have really good data… but then you need the time and money to actually do it. Hannah Weinberger is a reporter at Crosscut focused on science and the environment. Reach her on Twitter weinbergrrrrr and email at hannah. Share Facebook Twitter Email Print. Giving mosquitoes what they need Not all mosquitoes are created equal — through , there are at least 52 documented species in Washington state alone — but they all thrive under certain conditions.

The West Nile factor West Nile virus in humans ramps up in late summer and early fall, in part because the virus-carrying birds that mosquitoes feed on start to migrate elsewhere, prompting mosquitoes to look for new food sources. Future risk Washington state summers are expected to get warmer on average over the next few decades, but places like Seattle still have a ways to go before they warm beyond the temperature range Climate Central found supports mosquitos.

Changing temperatures could also affect where we find mosquitoes in Washington state. Hannah Weinberger Hannah Weinberger is a reporter at Crosscut focused on science and the environment.

Finally, they randomly selected an additional 59 sites on public land across the region where bigleaf maple are known to exist. Across these randomly chosen sites, they found that nearly a quarter of the bigleaf maple trees showed signs of decline. From each study site, they collected soil, leaves, stems and tree cores, which they analyzed in the lab. Tree cores allow scientists to learn about the age and growth rate of a tree — as well as weather history at that location — without having to cut it down.

Processed tree cores used in analyses to estimate the timing of decline in bigleaf maple trees. From the analysis of the tree cores, the team found that the growth of bigleaf maple has varied significantly since , and was especially lower in years with hotter, drier summers.

They compared this growth to that of Douglas fir trees, which they also cored, and found their annual growth was consistent — meaning that bigleaf maple are especially sensitive to dry, hot weather.

These findings will likely change the way foresters manage bigleaf maple in both urban and wild settings. Environment News releases Research Science. But since , scientists, concerned hikers and residents have observed more stressed and dying bigleaf maple across urban and suburban neighborhoods as well as in forested areas. Often the leaves are the first to shrivel and die, eventually leaving some trees completely bare.

A bigleaf maple tree that has nearly died in Washington. Washington Department of Natural Resources. A new study led by the University of Washington, in collaboration with Washington Department of Natural Resources, has found that bigleaf maple die-off in Washington is linked to hotter, drier summers that predispose this species to decline.

The findings were published Sept. In addition to warmer, drier weather, the researchers found that bigleaf maple are more likely to decline near roads and other development — especially in hotter urban areas.

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