Results 41 to 50 of about 12,882 (250)
Did selection for seed traits across the Cretaceous/Paleogene boundary sort plants based on ploidy?
Acta Palaeobotanica, 2022 Paleobotanists debate whether the Cretaceous/Paleogene boundary (KPB) event was selective. As the hypothesis that the KPB event selected for plants with fast-return leaf economic traits (e.g.
Keith Berry, Ganesh K. Jaganathan
doaj +1 more source
A soluble model of evolution and extinction dynamics in a rugged fitness landscape [PDF]
, 1997 We consider a continuum version of a previously introduced and numerically studied model of macroevolution (PRL 75, 2055, (1995)) in which agents evolve by an optimization process in a rugged fitness landscape and die due to their competitive ...
David M. Raup +19 more
core +2 more sources
Causes and consequences of end-Ediacaran extinction: An update
Cambridge Prisms: Extinction, 2023 Since the 1980s, the existence of one or more extinction events in the late Ediacaran has been the subject of debate. Discussion surrounding these events has intensified in the last decade, in concert with efforts to understand drivers of global change ...
Simon A.F. Darroch +5 more
doaj +1 more source
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Declining Volatility, a General Property of Disparate Systems: From Fossils, to Stocks, to the Stars
, 2013 There may be structural principles pertaining to the general behavior of systems that lead to similarities in a variety of different contexts. Classic examples include the descriptive power of fractals, the importance of surface area to volume ...
ADRAIN +72 more
core +1 more source
Connecting the distribution and diversification of marine plants
Oikos, EarlyView.Integration of the evolutionary history with distribution of extant species is necessary to explain present‐day diversity, particularly for ‘foundation' species, such as seagrasses, which create habitats of socioecological relevance. Here, we resolved if varying evolutionary history of seagrass families has imprinted the distribution ranges of extant ...
Fernando Tuya +3 more
wiley +1 more source
Cellular Automata Model of Macroevolution [PDF]
, 2008 In this paper I describe a cellular automaton model of a multi-species ecosystem, suitable for the study of emergent properties of macroevolution. Unlike majority of ecological models, the number of coexisting species is not fixed.
Borkowski, Wojciech
core
A critical branching process model for biodiversity [PDF]
, 2004 Motivated as a null model for comparison with data, we study the following model for a phylogenetic tree on $n$ extant species. The origin of the clade is a random time in the past, whose (improper) distribution is uniform on $(0,\infty)$.
Aldous, David J., Popovic, Lea
core +2 more sources
Trapped in the web: network architectures spread coevolution and shape adaptation
Oikos, EarlyView.Adaptation is critical for biodiversity to persist under global change. Within ecological communities, species often face tradeoffs between adapting to shifting abiotic conditions and navigating the complex selective pressures imposed by interaction networks.
Alexandre Fuster‐ Calvo +5 more
wiley +1 more source
Fluctuations in models of biological macroevolution
, 2005 Fluctuations in diversity and extinction sizes are discussed and compared for two different, individual-based models of biological coevolution. Both models display power-law distributions for various quantities of evolutionary interest, such as the ...
Rikvold, Per Arne
core +1 more source