Eric P. Palkovacs
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View article: Archaeological evidence across four millennia indicates recent erosion of Chinook salmon age structure in California
Archaeological evidence across four millennia indicates recent erosion of Chinook salmon age structure in California Open
Chinook salmon Oncorhynchus tshawytscha provide crucial ecosystem services, but their populations are in steep decline throughout their native range. Recent decades have seen widespread erosion of age structures, but the lack of long-term …
View article: Revealing unseen dynamical regimes of ecosystems from population time-series data
Revealing unseen dynamical regimes of ecosystems from population time-series data Open
Many dynamical systems can exist in alternative regimes for which small changes in an environmental driver can cause sudden jumps between regimes. In ecology, predicting the regime of population fluctuations under unobserved levels of an e…
View article: Revealing unseen dynamical regimes of ecosystems from population time-series data
Revealing unseen dynamical regimes of ecosystems from population time-series data Open
Many ecosystems can exist in alternative dynamical regimes for which small changes in an environmental driver can cause sudden jumps between regimes. However, predicting the dynamics of regimes that occur under unobserved levels of the env…
View article: California steelhead populations were regionally buffered and individually resistant to a severe multi-year drought
California steelhead populations were regionally buffered and individually resistant to a severe multi-year drought Open
Weather extremes, such as drought, are predicted to be a strong determinant of species persistence under climate change. Yet predictions often fail to consider that variation in streamflow responses, variation in population dynamics, or ad…
View article: Integrating otolith and genetic tools to reveal intraspecific biodiversity in a highly impacted salmon population
Integrating otolith and genetic tools to reveal intraspecific biodiversity in a highly impacted salmon population Open
Intraspecific biodiversity is vital for species persistence in an increasingly volatile world. By embracing methods that integrate information at different spatiotemporal scales, we can directly monitor and reconstruct changes in intraspec…
View article: Genetic divergence and one‐way gene flow influence contemporary evolution and ecology of a partially migratory fish
Genetic divergence and one‐way gene flow influence contemporary evolution and ecology of a partially migratory fish Open
Recent work has revealed the importance of contemporary evolution in shaping ecological outcomes. In particular, rapid evolutionary divergence between populations has been shown to impact the ecology of populations, communities, and ecosys…
View article: Interactions between climate change and urbanization will shape the future of biodiversity
Interactions between climate change and urbanization will shape the future of biodiversity Open
View article: Intraspecific variation in a predator changes intertidal community through effects on a foundation species
Intraspecific variation in a predator changes intertidal community through effects on a foundation species Open
Intraspecific variation is an important form of biodiversity that can alter community and ecosystem properties. Recent work demonstrates the community effects of intraspecific variation in predators via altering prey communities and in fou…
View article: A unifying framework for understanding ecological and evolutionary population connectivity
A unifying framework for understanding ecological and evolutionary population connectivity Open
Although the concept of connectivity is ubiquitous in ecology and evolution, its definition is often inconsistent, particularly in interdisciplinary research. In an ecological context, population connectivity refers to the movement of indi…
View article: Role of maturation and mortality in portfolio effects and climate resilience
Role of maturation and mortality in portfolio effects and climate resilience Open
The portfolio effect plays a critical role in population productivity and stability. Age structure of spawning salmon represents an example of portfolio effects such that the risks of experiencing unfavorable conditions are spread across t…
View article: Age structure augments the predictive power of time series for fisheries and conservation
Age structure augments the predictive power of time series for fisheries and conservation Open
Ecological forecasts are potentially of great value for managing fisheries and for stakeholders dependent on their long-term sustainability. Yet, most forecasting approaches are data-intensive, requiring information not just on the focal s…
View article: Spatial and temporal genetic stock composition of river herring bycatch in southern New England Atlantic herring and mackerel fisheries
Spatial and temporal genetic stock composition of river herring bycatch in southern New England Atlantic herring and mackerel fisheries Open
Anadromous river herring (alewife and blueback herring) persist at historically low abundances and are caught as bycatch in commercial fisheries, potentially preventing recovery despite conservation efforts. We used newly established singl…
View article: Poor downstream passage at a dam creates an ecological trap for migratory fish
Poor downstream passage at a dam creates an ecological trap for migratory fish Open
Ecological traps can be caused when partial restoration leads organisms to make maladaptive habitat choices. One example of this is fishways (e.g., fish ladders) that provide upstream passage at dams but are not paired with adequate downst…
View article: The Effect of Pregnancy On Metabolic Scaling and Population Energy Demand in the Viviparous Fish <i>Gambusia affinis</i>
The Effect of Pregnancy On Metabolic Scaling and Population Energy Demand in the Viviparous Fish <i>Gambusia affinis</i> Open
Synopsis Metabolism is a fundamental attribute of all organisms that influences how species affect and are affected by their natural environment. Differences between sexes in ectothermic species may substantially alter metabolic scaling pa…
View article: Inconsistent evolution and growth–survival tradeoffs in <i>Gambusia affinis</i>
Inconsistent evolution and growth–survival tradeoffs in <i>Gambusia affinis</i> Open
Growth–survival tradeoffs may be a generalizable mechanism influencing trajectories of prey evolution. Here, we investigate evolutionary contributions to growth and survival in western mosquitofish ( Gambusia affinis ) from 10 populations …
View article: Plasticity and evolution shape the scaling of metabolism and excretion along a geothermal temperature gradient
Plasticity and evolution shape the scaling of metabolism and excretion along a geothermal temperature gradient Open
Physiological rates are heavily dependent on temperature and body size. Most current predictions of organisms’ response to environmental warming are based on the assumption that key physiological rates such as metabolism and excretion scal…
View article: Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes
Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes Open
Fluctuations in the population abundances of interacting species are widespread. Such fluctuations could be a response to abiotic factors, biotic interactions, or a combination of the two. Correctly identifying the drivers is critical for …
View article: The Evolutionary Consequences of Dams and Other Barriers for Riverine Fishes
The Evolutionary Consequences of Dams and Other Barriers for Riverine Fishes Open
Dams and other anthropogenic barriers have caused global ecological and hydrological upheaval in the blink of the geological eye. In the present article, we synthesize 307 studies in a systematic review of contemporary evolution following …
View article: Analysis code from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i>
Analysis code from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i> Open
Growth-survival tradeoffs may be a generalizable mechanism influencing trajectories of prey evolution. Here, we investigate evolutionary contributions to growth and survival in western mosquitofish (Gambusia affinis) from 10 populat…
View article: Experimental data from growth mesocosms from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i>
Experimental data from growth mesocosms from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i> Open
Growth-survival tradeoffs may be a generalizable mechanism influencing trajectories of prey evolution. Here, we investigate evolutionary contributions to growth and survival in western mosquitofish (Gambusia affinis) from 10 populat…
View article: Experimental data from survival mesocosms from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i>
Experimental data from survival mesocosms from Inconsistent evolution and growth-survival tradeoffs in <i>Gambusia affinis</i> Open
Growth-survival tradeoffs may be a generalizable mechanism influencing trajectories of prey evolution. Here, we investigate evolutionary contributions to growth and survival in western mosquitofish (Gambusia affinis) from 10 populat…
View article: Consumer trait responses track change in resource supply along replicated thermal gradients
Consumer trait responses track change in resource supply along replicated thermal gradients Open
Rising temperatures may alter consumer diets through increased metabolic demand and altered resource availability. However, current theories assessing dietary shifts with warming do not account for a change in resource availability. It is …
View article: Shade affects magnitude and tactics of juvenile Chinook salmon antipredator behavior in the migration corridor
Shade affects magnitude and tactics of juvenile Chinook salmon antipredator behavior in the migration corridor Open
View article: Using seasonal genomic changes to understand historical adaptation to new environments: Parallel selection on stickleback in highly‐variable estuaries
Using seasonal genomic changes to understand historical adaptation to new environments: Parallel selection on stickleback in highly‐variable estuaries Open
Parallel evolution is considered strong evidence for natural selection. However, few studies have investigated the process of parallel selection as it plays out in real time. The common approach is to study historical signatures of selecti…
View article: Using seasonal genomic changes to understand historical adaptation: parallel selection on stickleback in highly-variable estuaries
Using seasonal genomic changes to understand historical adaptation: parallel selection on stickleback in highly-variable estuaries Open
Parallel evolution is considered strong evidence for natural selection. However, few studies have investigated the process of parallel selection as it plays out in real time. The common approach is to study historical signatures of selecti…
View article: Alternative migratory strategies are widespread in subyearling Chinook salmon
Alternative migratory strategies are widespread in subyearling Chinook salmon Open
Variation in life history traits within and across species is known to reflect adaptations to different environmental drivers through a diversity of mechanisms. Trait variation can also help buffer species and populations against extinctio…
View article: Recent declines in salmon body size impact ecosystems and fisheries
Recent declines in salmon body size impact ecosystems and fisheries Open
Declines in animal body sizes are widely reported and likely impact ecological interactions and ecosystem services. For harvested species subject to multiple stressors, limited understanding of the causes and consequences of size declines …
View article: Socio‐eco‐evolutionary dynamics in cities
Socio‐eco‐evolutionary dynamics in cities Open
Cities are uniquely complex systems regulated by interactions and feedbacks between nature and human society. Characteristics of human society—including culture, economics, technology and politics—underlie social patterns and activity, cre…
View article: A century of intermittent eco‐evolutionary feedbacks resulted in novel trait combinations in invasive Great Lakes alewives (<i>Alosa pseudoharengus</i>)
A century of intermittent eco‐evolutionary feedbacks resulted in novel trait combinations in invasive Great Lakes alewives (<i>Alosa pseudoharengus</i>) Open
Species introductions provide opportunities to quantify rates and patterns of evolutionary change in response to novel environments. Alewives ( Alosa pseudoharengus ) are native to the East Coast of North America where they ascend coastal …
View article: Evolutionary origins for ecological patterns in space
Evolutionary origins for ecological patterns in space Open
Historically, many biologists assumed that evolution and ecology acted independently because evolution occurred over distances too great to influence most ecological patterns. Today, evidence indicates that evolution can operate over a ran…