A semi-weekly periodical about the reproductive lives and growth of tundra plants on Qikiqtaruk – Herschel Island.
A lone white petal on a Dryas (mountain avens) flower resists today’s wind, keeping its status as the last remaining open flower in our phenology plots. An increasing trend of flower seed heads, made up of intricately twisting filaments, can be observed across all sites. Arctic willows continue to grow, but no seed catkins have open yet to reveal their fluffy seed.
The breeze stirs up the gossip among the grasses: who is reproducing, when and where? What will today bring for phenology on Qikiqtaruk? Providing you with all the latest updates on flower blooming, plant growth, seed dispersal and all things phenology, this is Phenology Today!
On the 5th July 70 Dryas flowers fill a single 1x1m plot. Eleven days later, only 4 remain. Summer comes and goes quickly in the Arctic. By the time this news reaches you, there might not be any white Dryas blossoms left – all replaced by twisting seed heads. No seed heads have unfurled so far, and we have yet to record Dryas seed dispersal. But certainly, with the inevitable passing of time, dispersal will happen. After all, winter is coming…
Isla’s arrival marks the resolution of a month-long quest to quantify the level of fluffiness of Eriophorum (cottongrass) flowers. Precisely when does fluffiness start to decrease? It will signify the end, the end of the flowering period and beginning of seed dispersal. Gergana and Isla have visited all phenology plots, and in a shocking twist of events, we now report that some flowers are fluffier than initially perceived by Gergana. More seed dispersal is bound to happen soon. Until then, we shall be standing by continuing to measure leaf length, waiting for the incessant winds to start carrying off Eriophorum seeds.
How high will the grass species, Arctagrostis latifolia, grow? We visit twice a week, reveal ing a whooping maximum height of 43.1cm so far this year! That’s tall! There is pollen visible on some flowers, but for now grass seed dispersal seems to be a distant future that we can only but imagine.
Around this time last year Team Shrub was wishing upon willow flowers to bring good weather to both blow away the mosquitos and hasten the arrival of the second half of our crew. Today, very few willow catkins have released their fluffy seeds into the wind in the phenology plots, hindering wish making. The willows are still steadily growing though, surprising us with larger and larger lengths of new stem growth. How much will they grow this year? Only time can tell.
Thanks to a team effort in eating small pots of yoghurts, we have successfully manufactured new radiation shields for the iButtons on the phenology plots. What can temperature sensors, ground observations and drones tell us about phenological changes? Check out the ShrubTundra project to find out more.
This is Team Drone reporting for Phenology Today from Qikiqtaruk – Herschel Island. And remember, you heard it here first.
By Gergana and Isla