TY  - JOUR
A1  - Rossberg, Axel G.
A1  - Gaedke, Ursula
A1  - Kratina, Pavel
T1  - Dome patterns in pelagic size spectra reveal strong trophic cascades
JF  - Nature Communications
N2  - In ecological communities, especially the pelagic zones of aquatic ecosystems, certain bodysize ranges are often over-represented compared to others. Community size spectra, the distributions of community biomass over the logarithmic body-mass axis, tend to exhibit regularly spaced local maxima, called "domes", separated by steep troughs. Contrasting established theory, we explain these dome patterns as manifestations of top-down trophic cascades along aquatic food chains. Compiling high quality size-spectrum data and comparing these with a size-spectrum model introduced in this study, we test this theory and develop a detailed picture of the mechanisms by which bottom-up and top-down effects interact to generate dome patterns. Results imply that strong top-down trophic cascades are common in freshwater communities, much more than hitherto demonstrated, and may arise in nutrient rich marine systems as well. Transferring insights from the general theory of nonlinear pattern formation to domes patterns, we provide new interpretations of past lake-manipulation experiments.
Y1  - 2019
U6  - https://doi.org/10.1038/s41467-019-12289-0
SN  - 2041-1723
VL  - 10
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Pennekamp, Frank
A1  - Iles, Alison C.
A1  - Garland, Joshua
A1  - Brennan, Georgina
A1  - Brose, Ulrich
A1  - Gaedke, Ursula
A1  - Jacob, Ute
A1  - Kratina, Pavel
A1  - Matthews, Blake
A1  - Munch, Stephan
A1  - Novak, Mark
A1  - Palamara, Gian Marco
A1  - Rall, Bjorn C.
A1  - Rosenbaum, Benjamin
A1  - Tabi, Andrea
A1  - Ward, Colette
A1  - Williams, Richard
A1  - Ye, Hao
A1  - Petchey, Owen L.
T1  - The intrinsic predictability of ecological time series and its potential to guide forecasting
JF  - Ecological monographs : a publication of the Ecological Society of America.
KW  - empirical dynamic modelling
KW  - forecasting
KW  - information theory
KW  - permutation entropy
KW  - population dynamics
KW  - time series analysis
Y1  - 2019
U6  - https://doi.org/10.1002/ecm.1359
SN  - 0012-9615
SN  - 1557-7015
VL  - 89
IS  - 2
PB  - Wiley
CY  - Hoboken
ER  -