Movement Patterns in a Partial Migrant: A Multi-Event Capture-Recapture Approach

Gourlay-Larour, Marie-Lucile; Pradel, Roger; Guillemain, Matthieu; Guitton, Jean-Sébastien; L’Hostis, Monique; Santin‐Janin, Hugues; Caizergues, Alain

doi:10.1371/journal.pone.0096478

Cited by 12 publications

(13 citation statements)

References 46 publications

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“…Winter survival is lower than survival at other stages of the annual cycle for a number of migratory birds (e.g. red-knot Calidris canutus canutus [ 54 ], houbara bustard Chlamydotis undulata [ 55 ], common pochard Aythya ferina [ 56 ]).…”

Section: Discussionmentioning

confidence: 99%

Do American Dippers Obtain a Survival Benefit from Altitudinal Migration?

et al. 2015

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Studies of partial migrants provide an opportunity to assess the cost and benefits of migration. Previous work has demonstrated that sedentary American dippers (residents) have higher annual productivity than altitudinal migrants that move to higher elevations to breed. Here we use a ten-year (30 period) mark-recapture dataset to evaluate whether migrants offset their lower productivity with higher survival during the migration-breeding period when they occupy different habitat, or early and late-winter periods when they coexist with residents. Mark-recapture models provide no evidence that apparent monthly survival of migrants is higher than that of residents at any time of the year. The best-supported model suggests that monthly survival is higher in the migration-breeding period than winter periods. Another well-supported model suggested that residency conferred a survival benefit, and annual apparent survival (calculated from model weighted monthly apparent survival estimates using the Delta method) of residents (0.511 ± 0.038SE) was slightly higher than that of migrants (0.487 ± 0.032). Winter survival of American dippers was influenced by environmental conditions; monthly apparent survival increased as maximum daily flow rates increased and declined as winter temperatures became colder. However, we found no evidence that environmental conditions altered differences in winter survival of residents and migrants. Since migratory American dippers have lower productivity and slightly lower survival than residents our data suggests that partial migration is likely an outcome of competition for limited nest sites at low elevations, with less competitive individuals being forced to migrate to higher elevations in order to breed.

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Section: Discussionmentioning

confidence: 99%

Do American Dippers Obtain a Survival Benefit from Altitudinal Migration?

et al. 2015

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“…red‐spotted newt (Grayson et al, ); tiger shark Galeocerdo cuvier (Papastamatiou et al, ); blackbird (Fudickar et al, ); Cory's shearwater (Catry et al, )], or occasionally males [e.g. wandering albatross, Diomedea exulans (Weimerskirch et al, ); pochard, Aythya farina (Gourlay‐Larour et al, )], as the more migratory sex.…”

Section: Requirements and Opportunities For Empirical Datamentioning

confidence: 99%

“…Papastamatiou et al, ; Cagnacci et al, ; Gurarie et al, ), and multi‐state, multi‐event and integrated population models of mark–recapture or encounter data and associated population counts and observations of reproductive success (e.g. Gourlay‐Larour et al, ; Cayuela et al, ; Rushing et al, ).…”

Section: Requirements and Opportunities For Empirical Datamentioning

confidence: 99%

Population and evolutionary dynamics in spatially structured seasonally varying environments

et al. 2018

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Increasingly imperative objectives in ecology are to understand and forecast population dynamic and evolutionary responses to seasonal environmental variation and change. Such population and evolutionary dynamics result from immediate and lagged responses of all key life-history traits, and resulting demographic rates that affect population growth rate, to seasonal environmental conditions and population density. However, existing population dynamic and eco-evolutionary theory and models have not yet fully encompassed within-individual and among-individual variation, covariation, structure and heterogeneity, and ongoing evolution, in a critical life-history trait that allows individuals to respond to seasonal environmental conditions: seasonal migration. Meanwhile, empirical studies aided by new animal-tracking technologies are increasingly demonstrating substantial within-population variation in the occurrence and form of migration versus year-round residence, generating diverse forms of 'partial migration' spanning diverse species, habitats and spatial scales. Such partially migratory systems form a continuum between the extreme scenarios of full migration and full year-round residence, and are commonplace in nature. Here, we first review basic scenarios of partial migration and associated models designed to identify conditions that facilitate the maintenance of migratory polymorphism. We highlight that such models have been fundamental to the development of partial migration theory, but are spatially and demographically simplistic compared to the rich bodies of population dynamic theory and models that consider spatially structured populations with dispersal but no migration, or consider populations experiencing strong seasonality and full obligate migration. Second, to provide an overarching conceptual framework for spatio-temporal population dynamics, we define a 'partially migratory meta-population' system as a spatially structured set of locations that can be occupied by different sets of resident and migrant individuals in different seasons, and where locations that can support reproduction can also be linked by dispersal. We outline key forms of within-individual and among-individual variation and structure in migration that could arise within such systems and interact with variation in individual survival, reproduction and dispersal to create complex population dynamics and evolutionary responses across locations, seasons, years and generations. Third, we review approaches by which population dynamic and eco-evolutionary models could be developed to test hypotheses regarding the dynamics and persistence of partially migratory meta-populations given diverse forms of seasonal environmental variation and change, and to forecast system-specific dynamics. To demonstrate one such approach, we use an evolutionary individual-based model to illustrate that multiple forms of partial migration can readily co-exist in a simple spatially structured landscape. Finally, we summarise recent empirical studies that demon...

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“…With the recently developed extensions, one can often find state-based CJS analyses where survival is also considered a nuisance process and primary scientific interest lies with the transitions between states. See Gourlay-Larour et al (2014) for a recent example. With this in mind, practicing ecologists are using the state-based CJS framework and the associated HMM formulation to analyze complex state transitions such as the combination of geographic location and reproductive or disease status.…”

Section: Introductionmentioning

confidence: 99%

Multivariate State Hidden Markov Models for Mark-Recapture Data

Johnson¹,

Laake²,

Melin³

et al. 2015

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State-based Cormack-Jolly-Seber (CJS) models have become an often used method for assessing states or conditions of free ranging animals through time. Although originally envisioned to account for di↵erences in survival and observation processes when animals are moving though various geographical strata, it has evolved to model vital rates in di↵erent life-history or diseased states. We further extend this useful class of models to the case of multivariate state data. Researchers can record values of several di↵erent states of interest, e.g., geographic location and reproductive state. Traditionally, these would be aggregated into one state with a single probability of state uncertainty. However, by modeling states as a multivariate vector, one can account for partial knowledge of the vector as well as dependence between the state variables in a parsimonious way. A hidden Markov model formulation allows straightforward maximum likelihood inference. The proposed HMM models are demonstrated with a case study using data from a California sea lion vital rates study.

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Movement Patterns in a Partial Migrant: A Multi-Event Capture-Recapture Approach

Cited by 12 publications

References 46 publications

Do American Dippers Obtain a Survival Benefit from Altitudinal Migration?

Do American Dippers Obtain a Survival Benefit from Altitudinal Migration?

Population and evolutionary dynamics in spatially structured seasonally varying environments

Multivariate State Hidden Markov Models for Mark-Recapture Data

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