All good things must come to an end…

Video collected by our drone during an evening survey of one of the beaches.

Time flies when you are having fun, and our two weeks the Canadian High Arctic Research Station (CHARS) in Cambridge Bay/Iqaluktuuttiaq/ᐃᖃᓗᒃᑑᑦᑎᐊᖅ have flow by. It has been a busy couple of weeks with 110 sampling events collecting drone images, dust and beach sediments, sea and tap water sampling, and biodiversity observations and collections (see the map below for where we went).

A map of the B-PAINTS sampling locations around Cambridge Bay, Nunavut.

The Arctic weather gods have been (mostly) smiling down on us, and our daily commute has been fun if a bit dusty in our mini truck/ side-by-side.

Our trusty side-by-side vehicle!

Our working locations have been beautiful especially the evening fieldwork which has provided us with some stunning sunsets. The local people have been really friendly, and the children very enthusiastic, even helping us spot jellyfish and comb jellies from the dock when plankton sampling between low tides. A real highlight for the team was presenting a talk about Antarctica to a group of Children from the Actua summer camp being hosted at CHARS, followed by a long chat about the animals that live around the South Pole and who eats who in the Southern Ocean.

The sun hovers above the horizon as we spend the evening sampling the beach in Old Town (opposite the new town).

We came here looking for microplastics, but one thing that is obvious on the beaches are the macroplastics (bigger pieces of plastic litter). Every beach we looked at had as much, or more, plastic litter than you would find in heavily populated areas of the world. These larger plastics will, if not removed, eventually breakdown into microplastics and chemical pollutants that can enter environment and food chain. We are hoping that our results will help to change attitudes and policy in the region, and to encourage recycling and safe disposal of these long-term pollutants.

A selection of plastic litter that is sadly everywhere on the beaches of Cambridge Bay.

In the short time we have been here we have been fortunate enough to meet and be welcomed by many local people and talk with them about their Arctic home and their perceptions of pollution and climate change. We were treated to a traditional fire lighting ceremony from a local elder and throat singing from Kalinda and Victoria during a visit from the Canadian Minister for Northern Affairs, the honourable Dan Vandal. The fabulous Helen and Pam at the Pitquhirnikkut Ilihautiniq / Kitikmeot Heritage Society told us about their experiences of changes in wildlife distribution and the new arrivals such as the moths that weren’t this far north a few years ago.

Helen and Pam at the Pitquhirnikkut Ilihautiniq / Kitikmeot Heritage Society.

We were also treated to some delicious local sweetened bread and tales of changes to the abundance and timings of the local Arctic char (the iconic fish species that gives the bay its Inuit name: Iqaluktutiaq, meaning “good fishing place”) by an Inuit woman and her son who were at their fishing cabin on the south coast of the island. One thing that did surprise us was how few of the people we met knew that anything lived on their beaches. When we showed people the small wriggling amphipods that we collected (the only species that we regularly found on the beaches) there were a mixture of reactions from delight to disgust! The beaches here are very narrow and the tide only has a range of around two metres, so this is a poor source of food, and being covered in ice and snow for most of the year explains why the beaches can be an underappreciated part of the Arctic landscape.

Amphipod crustaceans (sandhoppers or sand fleas) are the dominant form of life on the beaches of Cambridge Bay, turn over a rock at low tide and this is what you find.

As climate change tightens its grip on the Arctic, these humble and overlooked beaches, ravaged by ice and seemingly lifeless, might turn out to be the perfect early warning system to track the changes inevitably coming to the area. The very short list of species capable of surviving here presently means that any changes to the biodiversity from milder conditions or a reduction in sea ice would be very easy to spot. Our work has compiled a comprehensive species list (5 species) dominated by the amphipod Gammarus setosus, an easy to spot and recognise species, and no seaweeds. Anything else that local people or scientists visiting CHARS find living on the beach could be a sign of changes to come.

If you want to know more about what we have been up to, click here to follow the #BPAINTS Twitter feed.

Cath, Huw & Steve.

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