Life‐History Variation Predicts the Effects of Demographic Stochasticity on Avian Population Dynamics

Sæther, B-E; Engen, Steinar; Møller, A. P.; Weimerskirch, Henri; Visser, Marcel E.; Fiedler, Wolfgang; Matthysen, Erik; Lambrechts, MM; Badyaev, Alexander V.; Becker, PH; Brommer, JE; Bukaciński, Dariusz; Bukacińska, Monika; Christensen, H. E.; Dickinson, Janis L.; Feu, Chris du; Gehlbach, FR; Heg, Dik; Hötker, Hermann; Merilä, Juha; Nielsen, JT; Rendell, Wallace B.; Robertson, RJ; Thomson, DL; Torok, Ja ́nos; Hecke, P Van

doi:10.1086/425371

Cited by 125 publications

(128 citation statements)

References 43 publications

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“…Some studies have suggested that species with faster population growth are more likely to succeed in establishing, because such populations can rapidly escape the dangers of small population size (Moulton and Pimm 1986;Cassey 2002). In contrast, other studies have suggested that these species are likely to fail in establishment because they face higher stochastic demographic variance than those with lower growth rate (Saether et al 2004;Blackburn et al 2009a). Comparative studies of the relationship between establishment success and life history also suggest that species with slower population growth rates are more likely to succeed in establishing (Blackburn et al 2009b).…”

Section: Discussionmentioning

confidence: 98%

“…Our finding of a positive relationship between body mass and establishment success supports the latter view: features associated with slow population growth rates are more likely to determine whether or not introduced species succeed in establishing in Taiwan, following introduction. Such species may be more likely to establish because they are less susceptible to the negative effects of demographic and environmental stochasticity on small founding populations (Saether et al 2004;Blackburn et al 2009a).…”

Section: Discussionmentioning

confidence: 99%

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The wildlife pet trade as a driver of introduction and establishment in alien birds in Taiwan

Cassey

Blackburn

2015

Biol Invasions

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The global trade in alien cage birds is flourishing and is considered to be one of the major routes by which species are entrained into the humanmediated invasion pathway. Here, we explore the likely influence of the wild bird trade on alien bird invasions in Taiwan. Specifically, we analyse the characteristics of alien bird species that have been successfully introduced and established at large in the wild. We use phylogenetic regression models to compare the traits of alien species recorded in the cage bird trade in Taiwan that have (or have not) subsequently been recorded at large in the wild, and the traits of species recorded in the wild that have (or have not) established (species identified in the Breeding Bird Survey in Taiwan). Alien species were more likely to be recorded as successfully introduced if they were commonly for sale in the Taiwanese pet bird trade, and possessed songs considered to be more attractive to people. Species that have been sold in the pet market for a longer period were also more likely to have been recorded in the wild. Establishment success was more likely for large-bodied bird species, but not strongly related to other predicted determinants of success, including proxies for propagule pressure and climate matching. We conclude that the pet trade influences bird invasions in Taiwan by determining which species are exposed to novel environments there, but which of those introduced species goes on to establish may depend more on their intrinsic life histories.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

The wildlife pet trade as a driver of introduction and establishment in alien birds in Taiwan

Cassey

Blackburn

2015

Biol Invasions

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“…However, changes in population size are most responsive to habitat loss during the period in which populations are more severely limited [3]. Unfortunately, relatively few empirical studies provide quantitative evidence indicating whether population size of migratory species is more sensitive to the amount of breeding habitat or non-breeding habitat [7,34,35] and we are unaware of any study done at range-wide scales.…”

Section: Discussionmentioning

confidence: 99%

Quantifying drivers of population dynamics for a migratory bird throughout the annual cycle

2016

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Worldwide, migratory species are undergoing rapid declines but understanding the factors driving these declines is hindered by missing information about migratory connectivity and the lack of data to quantify environmental processes across the annual cycle. Here, we combined range-wide information about migratory connectivity with global remote-sensing data to quantify the relative importance of breeding and non-breeding environmental processes to persistent long-term population declines of a migratory songbird, the wood thrush (Hylocichla mustelina). Consistent with theoretical predictions about population limitation of migratory birds, our results suggest that habitat loss and climate have contributed to the observed declines in wood thrush breeding abundance, yet the relative importance of breeding versus non-breeding factors is population-specific. For example, high-abundance core breeding populations appear to be more limited by habitat loss, whereas low-abundance, peripheral populations appear to be limited by climate-driven seasonal interactions. Further, our analysis indicates that the relative impact of breeding habitat loss is at least three to six times greater than the impact of equivalent nonbreeding habitat loss and therefore the steepest regional declines have likely been driven by the loss of breeding habitat. These results underscore the need for population-specific conservation strategies implemented throughout the annual cycle to reverse long-term declines.

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“…Widespread species may be able to tolerate a broad range of environmental conditions (Gaston 2003), and the fact that they are likely to be moved to areas with high human population densities, as well as from such areas, increases the likelihood that they will find new locations to their liking (Blackburn et al 2009). Large-bodied, long-lived species may be less susceptible to the negative effects of demographic and environmental stochasticity (Saether et al 2004), whereas rapidly reproducing species can quickly escape the demographic and environmental traps associated with small populations (Moulton and Pimm 1986). This suggests that, deliberately or inadvertently, people have chosen alien mammal species with characteristics that may predispose them to success in the later stages of invasion.…”

Section: Discussionmentioning

confidence: 99%

Patterns of selectivity in introductions of mammal species worldwide

Blackburn¹,

Scrivens²,

Heinrich³

et al. 2017

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Humans have an extremely long history of transporting and introducing mammal species outside their native geographic ranges. The characteristics of the species introduced (taxonomy, life-history, ecology, environment) can all influence which traits are available (and selected) for establishment, and subsequent invasive spread. Understanding the non-randomness in species introductions is therefore key to understanding invasions by alien species. Here, we test for selectivity in the identities and traits of mammal species introduced worldwide. We compiled and analysed a comprehensive database of introduced mammal species, including information on a broad range of life history, ecological, distributional and environmental variables that we predicted to differ between introduced and non-introduced mammal species. Certain mammal taxa are much more likely to have been introduced than expected, such as Artiodactyls in the families Bovidae and Cervidae. Rodents and bats were much less likely to have been introduced than expected. Introduced mammal species have significantly larger body masses, longer lifespans and larger litter sizes than a random sample of all mammal species. They also have much larger native geographic ranges than expected, originate from significantly further north, from cooler areas, and from areas with higher human population densities, than mammal species with no recorded introductions. The traits and distributions of species help determine which have been introduced, and reflect how the evolutionary history of mammals has resulted in certain species with certain traits being located in the way of human histories of movement and demands for goods and services. The large amount of unexplained variation is likely to relate to the intrinsically stochastic nature of this human-driven process. Blackburn et al. / NeoBiota 33: 33-51 (2017) 34

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Life‐History Variation Predicts the Effects of Demographic Stochasticity on Avian Population Dynamics

Cited by 125 publications

References 43 publications

The wildlife pet trade as a driver of introduction and establishment in alien birds in Taiwan

The wildlife pet trade as a driver of introduction and establishment in alien birds in Taiwan

Quantifying drivers of population dynamics for a migratory bird throughout the annual cycle

Patterns of selectivity in introductions of mammal species worldwide

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