Cristin-prosjekt-ID: 516711
Sist endret: 19. oktober 2018 15:55
Cristin-prosjekt-ID: 516711
Sist endret: 19. oktober 2018 15:55

ECOGEN - Ecosystem change and species persistence over time: a genome-based approach


prosjekteier / koordinerende forskningsansvarlig enhet





  • Engelsk


ECOGEN - Ecosystem change and species persistence over time: a genome-based approach

Vitenskapelig sammendrag


Main goal

Develop high taxonomic resolution ancient environmental DNA methods in order to evaluate how drivers of change (human, climate, biota) affect species persistence and ecosystem tipping points in arctic-alpine biomes


1) Improve methods for full genome analyses of environmental DNA

2) Compile palaeo data to plan a balanced design of climatic and human impacts

3) Do full genome analyses of lake cores to obtain information on past presence and abundance of vascular plant species and key herbivores

4) Identify biotic drivers and disentangle their effects from human land use and climate change on ecosystem resilience and ecosystem services

5) Estimate species persistence across periods of changes and identify factors causing extinction

6) Provide methods and knowledge to inform species conservation and ecosystem management


There is great concern about the ability of species and ecosystems to resist both direct human impact and climate changes. Especially in cold alpine and arctic regions, the effect of changing climate is expected to be severe. While much knowledge has been gained from modern ecology and palaeoecology, the possibility to test ecological hypothesis using palaeocological data has been limited by the taxonomic resolution of pollen and scarcity of macrofossils. Recent analyses using state-of-the-art ancient DNA methodology do, however, show great promise in overcoming these limitations and open up the possibility to studying more complete species compositions of past ecosystems. In this project we aim to even further increase the information gained from palaeorecords by developing full genome techniques and quantitative DNA methods for plants and key herbivores, for which we already are compiling full genome DNA reference libraries for the Alps and northern Norway. Additionally, for both of these regions we will develop a balanced sampling design of in total 40 lakes along climate gradients and human-land-use contrasts, informed by the latest archaeological and palaeoecological knowledge and current climate variation. We will analyse environmental DNA data from these lake sediments to provide a first comprehensive assessment of how multiple drivers of ecosystem changes interact to drive ecosystem shifts, tipping points and changes in the provisioning of ecosystem services. Using state-of-the-art techniques to model species distribution, we will address key factors thought to cause time lags in species dispersal and extinction. Combining our knowledge gained from the past with data on current climate, land use and ecosystem characteristics, this project will make predictions of future changes and provide key knowledge for management and conservation priorities.



Distriktsnyheter Nordnytt.

Alsos, Inger Greve; Hege Iren, Hansen. 2018, UITIntervju

ECOGENE - Ecosystem change and species persistence over time: a genome-based approach .

Alsos, Inger Greve. 2018, Joint Proxies Research Group Workshop. UITVitenskapelig foredrag

Palaeoecological reconstruction of high-mountain peat bog communities based on classical and molecular methods: a comparative synthesis. .

Garces Pastor, Sandra; S. Wangensteen, Owen; Pérez-Haase, Aaron; Pèlachs, Albert; Pérez-Obiol, Ramon; Soriano, Joan Manuel; Cañellas-Boltà, Núria; Vegas-Vilarrúbia, Teresa. 2018, 10th European Palaeobotany and Palynology Conference 2018.. UITVitenskapelig foredrag

Plant DNA metabarcoding of lake sediments: How does it represent the contemporary vegetation.

Alsos, Inger Greve; Lammers, Youri; Yoccoz, Nigel Gilles; Jørgensen, Tina; Sjøgren, Per Johan E; Gielly, Ludovic; Edwards, Mary Elizabeth. 2018, PLoS ONE. UIT, UJF(I, UoSVitenskapelig artikkel

Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen.

Clarke, Charlotte; Edwards, Mary Elizabeth; Brown, Antony Gavin; Gielly, Ludovic; Lammers, Youri; Heintzman, Peter D.; Murguzur, Francisco Javier Ancin; Bråthen, Kari Anne; Goslar, Tomasz; Alsos, Inger Greve. 2018, Boreas. UIT, UoS, POLEN, UiAMwP, UGAVitenskapelig artikkel