H2020Индивидуална стипендия2020–2023

EdgeStress · On the edge: The influence of multiple stressors on thermal tolerance in poleward edge populations in a climate change era

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2020-02-01 → 2023-01-31
Финансиране от ЕС: 245 720 €
Участници: 2
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Влиянието на високите температури, закисляването и намалената соленост на океана се проучват чрез примера със сините миди в Арктика. Това помага да се разбере как комбинацията от различни стресори променя издръжливостта на видовете и структурата на екосистемите при климатичните промени.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

On the edge: The influence of multiple stressors on thermal tolerance inpoleward edge populations in a climate change era

Global climate change has a profound effect on species and ecosystems across the globe. Temperatures at the equator are becoming too hot for many species to survive, and in response species are re-distributing to avoid deadly heat. They do so in a mainly poleward direction, and they are moving fast - more than 50-70 km per decade on average. The Arctic is warming 3-4 times faster than the global average, and non-Arctic species have started to expand into the Arctic seeking a ‘thermal refuge’ away from the heat. However, recent measurements indicate that temperatures in some Arctic regions already exceeds the temperature limit of many species, thus the Arctic may already too warm to provide shelter from climate change. Moreover, climate change is not only affecting species by warming their environment. In the Arctic, climate change is also causing ocean acidification (a decrease in the pH level of the water), and an unpreceded melting of the Greenland Ice Sheet, which decrease ocean salinity though a process called ‘freshening’. The project EdgeStress improves knowledge and perspectives on the effects of multiple climate change stressors on species and ecosystems at high latitudes. Specifically, the overall objectives of the project are: O1. Investigate if high summer temperatures lead to lethal heat stress in populations at their poleward limits. O2. Investigate if the combination of several interacting stressors in a natural environment decreases the thermal tolerance of habitat-forming species, hereby changing ecosystem structure. O3. Investigate if freshening and increased warming allow the expanding blue mussel Mytilus edulis to outcompete a native sister species in the Arctic

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

In response to climate change, species are moving in a poleward direction to avoid lethal temperatures. The Arctic is warming fast and non-indigenous species are expanding into the Arctic seeking a ‘thermal refuge’. However, recent work shows that temperatures in the Arctic already expose some boreal species to temperatures above their thermal limits, thus these results suggest that the Arctic is already too warm to provide a thermal refuge. Moreover, climate change is not only affecting organisms by warming their environment. For instance, in the Arctic climate change is also causing ocean acidification and an unpreceded melting of sea ice and the Greenland Ice Sheet. Combined, this leads to physical and chemical changes of the environment that exposes organisms to a novel and complex mosaic of multiple stressors fluctuating through time and space. The project EdgeStress improves knowledge and perspectives on the effects of multiple climate stressors on populations at their poleward distribution edge. Dr Jakob Thyrring is the researcher behind EdgeStress. During a two-year stay at University of British Columbia (UBC) in Canada he will collaborate with professor Christopher Harley, a world leading expert on coast ecology. The third year of EdgeStress will be conducted at Aarhus University (AU), Denmark, where to Dr Thyrring will transfer skills obtained from Canada. At AU, Dr Thyrring will utilise these skills to conduct research in the High Arctic West Greenland, a region characterized by rapid changes. EdgeStress provide novel information on how multiple environmental stressors and biotic interactions affect species thermal tolerance. Thus, the results are important in order to improve climate change predictions and its consequences for species and communities. The results will have implications globally and locally as it will be used to inform stakeholders, fish farming companies, researchers and governments, and the public about climate change impacts.

Оригинален текст от CORDIS (на английски).

Участници

AARHUS UNIVERSITET · Aarhus CКоординаторДания
UNIVERSITY OF BRITISH COLUMBIA · VANCOUVERКанада