Geographical range, heat tolerance and invasion success in aquatic species
Amanda E. Bates,Amanda E. Bates,Catherine M. McKelvie,Cascade J. B. Sorte,Simon A. Morley,Nick A.R. Jones,Julie Mondon,Tomas J. Bird,Gerry P. Quinn +8 more
TLDR
It is found that species introduced to freshwater systems have broader geographical ranges in comparison to native species, and introduced species are more heat tolerant than related native species collected from the same habitats.Abstract:
Species with broader geographical ranges are expected to be ecological generalists, while species with higher heat tolerances may be relatively competitive at more extreme and increasing temperatures. Thus, both traits are expected to relate to increased survival during transport to new regions of the globe, and once there, establishment and spread. Here, we explore these expectations using datasets of latitudinal range breadth and heat tolerance in freshwater and marine invertebrates and fishes. After accounting for the latitude and hemisphere of each species’ native range, we find that species introduced to freshwater systems have broader geographical ranges in comparison to native species. Moreover, introduced species are more heat tolerant than related native species collected from the same habitats. We further test for differences in range breadth and heat tolerance in relation to invasion success by comparing species that have established geographically restricted versus extensive introduced distributions. We find that geographical range size is positively related to invasion success in freshwater species only. However, heat tolerance is implicated as a trait correlated to widespread occurrence of introduced populations in both freshwater and marine systems. Our results emphasize the importance of formal risk assessments before moving heat tolerant species to novel locations.read more
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Responses of Marine Organisms to Climate Change across Oceans
Elvira S. Poloczanska,Elvira S. Poloczanska,Michael T. Burrows,Christopher J. Brown,Jorge García Molinos,Jorge García Molinos,Jorge García Molinos,Benjamin S. Halpern,Benjamin S. Halpern,Ove Hoegh-Guldberg,Carrie V. Kappel,Pippa J. Moore,Pippa J. Moore,Anthony J. Richardson,Anthony J. Richardson,David S. Schoeman,William J. Sydeman +16 more
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Aquatic invasive species: challenges for the future.
TL;DR: Impacts of AIS, factors limiting their dispersal, and the role that humans play in transporting AIS are described, including those that pave the way for invasions by other species (“invasional meltdown”).
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Defining and observing stages of climate-mediated range shifts in marine systems
Amanda E. Bates,Amanda E. Bates,Gretta T. Pecl,Stewart Frusher,Alistair J. Hobday,Thomas Wernberg,Thomas Wernberg,Dan A. Smale,Dan A. Smale,Jennifer M. Sunday,Jennifer M. Sunday,Nicole A. Hill,Nicholas K. Dulvy,Robert K. Colwell,Robert K. Colwell,Neil J. Holbrook,Elizabeth A. Fulton,Dirk Slawinski,Ming Feng,Graham J. Edgar,Ben Radford,Ben Radford,Peter A. Thompson,Reg Watson +23 more
TL;DR: This work focuses on warming-related range shifts in marine systems to describe extensions and contractions as stages, and evaluates the utility of trait-based risk (invasion) and vulnerability (extinction) frameworks for application in a range shift context and finds inadequacies.
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Integrating metabolic performance, thermal tolerance, and plasticity enables for more accurate predictions on species vulnerability to acute and chronic effects of global warming.
TL;DR: An integrative, synthetic approach including the investigation of multiple physiological traits (metabolic performance and thermal tolerance), and their plasticity, is proposed to provide more accurate and balanced predictions on species and assemblage vulnerability to both acute and chronic effects of global warming.
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Secondary contact and local adaptation contribute to genome-wide patterns of clinal variation in Drosophila melanogaster.
Alan O. Bergland,Raymond Tobler,Josefa González,Josefa González,Paul Schmidt,Dmitri A. Petrov +5 more
TL;DR: The results provide novel insight into the well‐studied system of clinal differentiation in D. melanogaster and provide a context for future studies seeking to identify loci contributing to local adaptation in a wide variety of organisms, including other invasive species as well as temperate endemics.
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