Browsing Bergen Open Research Archive by Author "Seddon, Alistair William Robin"

Now showing items 1-13 of 13

    • Abrupt change in tropical Pacific climate mean state during the Little Ice Age 

      Prohaska, Ana; Seddon, Alistair William Robin; Meese, Bernd; Willis, Katherine Jane; Chiang, John C. H.; Sachse, Dirk (Journal article; Peer reviewed, 2023)
      The mean state of the tropical Pacific ocean-atmosphere climate, in particular its east-west asymmetry, has profound consequences for regional climates and for the El Niño/Southern Oscillation variability. Here we present ...

    • Approaches to pollen taxonomic harmonisation in Quaternary palynology 

      Birks, Harry John Betteley; Bhatta, Kuber Prasad; Felde, Vivian Astrup; Flantua, Suzette; Mottl, Ondrej; Haberle, Simon G.; Herbert, Annika; Hooghiemstra, Henry; Birks, Hilary H; Grytnes, John Arvid; Seddon, Alistair William Robin (Journal article; Peer reviewed, 2023)
      Pollen taxonomic harmonisation involves the standardisation of the nomenclature of pollen and fern spores with similar morphotypes at the determination level that is common to all grains or spores with that morphotype ...

    • Detection of ice core particles via deep neural networks 

      Maffezzoli, Niccolò; Cook, Eliza; van der Bilt, Willem Godert Maria; Støren, Eivind; Festi, Daniela; Muthreich, Florian; Seddon, Alistair William Robin; Burgay, François; Baccolo, Giovanni; Mygind, Amalie; Petersen, Troels; Spolaor, Andrea; Vascon, Alessio; Pelillo, Marcello; Ferretti, Patrizia; dos Reis, Rafael S.; Simões, Jefferson; Ronen, Yuval; Delmonte, Barbara; Viccaro, Marco; Steffensen, Jørgen Peder; Dahl-Jensen, Dorthe; Nisancioglu, Kerim Hestnes; Brabante, Carlo (Journal article; Peer reviewed, 2023)
      Insoluble particles in ice cores record signatures of past climate parameters like vegetation dynamics, volcanic activity, and aridity. For some of them, the analytical detection relies on intensive bench microscopy ...

    • Exploring spatio-temporal patterns of palynological changes in Asia during the Holocene 

      Bhatta, Kuber Prasad; Mottl, Ondrej; Felde, Vivian Astrup; Flantua, Suzette; Birks, Hilary H; Cao, Xianyong; Chen, Fahu; Grytnes, John Arvid; Seddon, Alistair William Robin; Birks, Harry John Betteley (Journal article; Peer reviewed, 2023-05-05)
      Historical legacies influence present-day ecosystem composition and dynamics. It is therefore important to understand the long-term dynamics of ecosystems and their properties. Analysis of ecosystem properties during the ...

    • Global acceleration in rates of vegetation change over the past 18,000 years 

      Mottl, Ondrej; Flantua, Suzette; Bhatta, Kuber Prasad; Felde, Vivian Astrup; Giesecke, Thomas; Goring, Simon; Grimm, Eric C.; Haberle, Simon G.; Hooghiemstra, Henry; Ivory, Sarah J; Kuneš, Petr; Wolters, Steffen; Seddon, Alistair William Robin; Williams, John W. (Journal article; Peer reviewed, 2021)
      Global vegetation over the past 18,000 years has been transformed first by the climate changes that accompanied the last deglaciation and again by increasing human pressures; however, the magnitude and patterns of rates ...

    • A guide to the processing and standardization of global palaeoecological data for large-scale syntheses using fossil pollen 

      Flantua, Suzette; Mottl, Ondrej; Felde, Vivian Astrup; Bhatta, Kuber Prasad; Birks, Hilary H; Grytnes, John Arvid; Seddon, Alistair William Robin; Birks, Harry John Betteley (Journal article; Peer reviewed, 2023)
      Aim: Palaeoecological data are crucial for comprehending large-scale biodiversity patterns and the natural and anthropogenic drivers that influence them over time. Over the last decade, the availability of open-access ...

    • Long-term ecological responses of a lowland dipterocarp forest to climate changes and nutrient availability 

      Prohaska, Ana; Seddon, Alistair William Robin; Rach, Oliver; Smith, Andrew; Sachse, Dirk; Willis, Katherine Jane (Journal article; Peer reviewed, 2023)
      Understanding the long-term impact of projected climate change on tropical rainforests is critical given their central role in the Earth's system. Palaeoecological records can provide a valuable perspective on this problem. ...

    • Long-term trends in diatom diversity and palaeoproductivity: A 16 000-year multidecadal record from Lake Baikal, southern Siberia 

      Mackay, Anson W.; Felde, Vivian Astrup; Morley, David W.; Piotrowska, Natalia; Rioual, Patrick; Seddon, Alistair William Robin; Swann, George E. A. (Journal article; Peer reviewed, 2022)
      Biological diversity is inextricably linked to community stability and ecosystem functioning, but our understanding of these relationships in freshwater ecosystems is largely based on short-term observational, experimental, ...

    • Pollen-chemistry variations along elevation gradients and their implications for a proxy for UV-B radiation in the plant-fossil record 

      Seddon, Alistair William Robin; Festi, Daniela; Nieuwkerk, Mayke; Gya, Ragnhild; Hamre, Børge; Krüger, Linn Cecilie; Hjortland Östman, Silje Andrea; Robson, T. Matthew (Journal article; Peer reviewed, 2021)
      Research indicates that phenolic compounds (e.g. para-coumaric acid) found within pollen grains may be useful as a proxy to reconstruct the UV-B radiation received at the Earth's surface in the geological past. However, ...

    • Rate-of-change analysis in palaeoecology revisited: a new approach 

      Mottl, Ondrej; Grytnes, John Arvid; Seddon, Alistair William Robin; Steinbauer, Manuel; Bhatta, Kuber Prasad; Felde, Vivian Astrup; Flantua, Suzette; Birks, Harry John Betteley (Journal article; Peer reviewed, 2021)
      Dynamics in the rate of compositional change (rate-of-change; RoC), preserved in paleoecological sequences, are thought to reflect changes due to exogenous (climate and human forcing) or endogenous (local dynamics and ...

    • Special feature: measuring components of ecological resilience in long-term ecological datasets 

      Seddon, Alistair William Robin (Journal article; Peer reviewed, 2021)
      Ecological resilience has become a focal concept in ecosystem management. Palaeoecological records (i.e. the sub-fossil remains preserved in sediments) are useful archives to address ecological resilience since they can ...

    • Time to better integrate paleoecological research infrastructures with neoecology to improve understanding of biodiversity long-term dynamics and to inform future conservation 

      Nieto-Lugilde, Diego; Blois, Jessica L.; Bonet-García, Francisco J.; Giesecke, Thomas; Gil-Romera, Graciela; Seddon, Alistair William Robin (Journal article; Peer reviewed, 2021)
      Anthropogenic pressures are causing a global decline in biodiversity. Successful attempts at biodiversity conservation requires an understanding of biodiversity patterns as well as the drivers and processes that determine ...

    • Vegetation- memory effects and their association with vegetation resilience in global drylands 

      Kusch, Erik; Davy, Richard; Seddon, Alistair William Robin (Journal article, 2022)
      Vegetation memory describes the effect of antecedent environmental and ecological conditions on the present ecosystem state and has been proposed as an important proxy for vegetation resilience. In particular, strong ...