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Rate-of-change analysis in paleoecology revisited : A new approach

Title data

Mottl, Ondřej ; Grytnes, John-Arvid ; Seddon, Alistair W. R. ; Steinbauer, Manuel ; Bhatta, Kuber P. ; Felde, Vivian A. ; Flantua, Suzette G. A. ; Birks, H. John B.:
Rate-of-change analysis in paleoecology revisited : A new approach.
In: Review of Palaeobotany and Palynology. Vol. 293 (2021) . - No. 104483.
ISSN 0034-6667
DOI: https://doi.org/10.1016/j.revpalbo.2021.104483

Abstract in another language

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 biotic interactions) drivers. However, changes in sedimentation rates and sampling strategies can result in an uneven distribution of time intervals and are known to affect RoC estimates. Furthermore, there has been relatively little exploration of the implications of these challenges in quantifying RoC in paleoecology.

Here, we introduce R-Ratepol – an easy-to-use R package – that provides a robust numerical technique for detecting and summarizing RoC patterns in complex multivariate time-ordered stratigraphical sequences. First, we compare the performance of common methods of estimating RoC and detecting periods of high RoC (peak-point) using simulated pollen-stratigraphical data with known patterns of compositional change and temporal resolution. In addition, we propose a new method of binning with a moving window, which shows a more than 5-fold increase in the correct detection of peak-points compared to the more traditional way of using individual levels.

Next, we apply our new methodology to four representative European pollen sequences and show that our approach also performs well in detecting periods of significant compositional change during known onsets of human activity, early land-use transformation, and changes in fire frequency.

Expanding the approach using R-Ratepol to open-access paleoecological datasets in global databases, such as Neotoma, will allow future paleoecological and macroecological studies to quantify major changes in biotic composition or in sets of abiotic variables across broad spatiotemporal scales.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Cultural Studies > Department of Sport Science > Professor Sport Ecology
Profile Fields > Advanced Fields > Ecology and the Environmental Sciences
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 000 Computer Science, information, general works > 004 Computer science
500 Science > 500 Natural sciences
500 Science > 560 Fossils, prehistoric life
500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Date Deposited: 11 Apr 2022 09:49
Last Modified: 11 Apr 2022 09:49
URI: https://eref.uni-bayreuth.de/id/eprint/69132