Apparent Survival and Long-Term Population Growth Rate of The Kentish Plover <i>Charadrius alexandrinus</i> in Mallorca, Archipelago, Spain

Garcias, Pere J.; Tavecchia, Giacomo

doi:10.13157/arla.65.1.2018.sc2

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…(φ = 0.892-0.923) and life expectancy estimates (9.36-12.48 years) so far reported in plovers and other shorebirds in general (Méndez et al 2018, Dinsmore 2019. The apparent survival estimates of temperate-breeding Charadrius species have been extensively explored such as the piping plover C. melodus (φ = 0.66-0.80) (Roche et al 2010), the Kentish plover C. alexandrinus (φ = 0.59-0.76) (Boyd 1962, Garcias andTavecchia 2018) and the snowy plover C. nivosus (φ = 0.56-0.76) (Mullin et al 2010, Warriner et al 1986). In all cases, apparent survival estimates are considerably lower than the new estimates that we report from Madagascar.…”

Section: Discussionmentioning

confidence: 99%

Exceptionally high apparent adult survival in three tropical species of plovers in Madagascar

Jones

Eberhart‐Hertel

Freckleton

et al. 2021

Journal of Avian Biology

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Adult survival is a key component of population dynamics, and understanding variation in and the drivers of adult survival rates and longevity is critical for ecological and evolutionary studies, as well as for conservation biology and practice. Tropical species of landbirds are often selected to have higher adult survival due to high nest predation rates, but it is unclear if the same patterns occur in other avian lineages with different life history strategies. Here, we investigate adult survival of three sympatrically breeding species of shorebirds in south-west Madagascar: the endemic and endangered Madagascar plover Charadrius thoracicus and two more widely distributed African species: the white-fronted plover C. marginatus and the Kittlitz's plover C. pecuarius. Using mark-recapture data from 1843 individuals breeding at an intensely monitored saltmarsh over a 13-year period, we estimated annual rates of apparent survival (φ) corrected for encounter probability. Adult apparent survival rates were high for all three species (mean ± SE): Madagascar (φ = 0.899 ± 0.010) and whitefronted plovers (φ = 0.923 ± 0.008). Kittlitz's plovers showed a difference between the first (φ 1 = 0.719 ± 0.026) and subsequent transitions (φ 2+ = 0.892 ± 0.014), suggesting that transient breeders are common in this species. For birds first captured as adults, these survival estimates translate to life expectancies of 9.72 (±1.11) years in Kittlitz's plovers, 9.36 (±0.98) years in Madagascar plovers and 12.48 (±1.32) in white-fronted plovers. We hypothesise that a long lifespan could be an adaptation arising from the unique climatic pressures on the island of Madagascar that would otherwise lead to reduced fitness. However, long lifespans may not sufficiently compensate for a reduction in breeding opportunities due to possible climatic disruption in the future. Consequently, at least two of these plover species seem vulnerable to ongoing habitat destruction and changing climate cycles.

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Section: Discussionmentioning

confidence: 99%

Exceptionally high apparent adult survival in three tropical species of plovers in Madagascar

Jones

Eberhart‐Hertel

Freckleton

et al. 2021

Journal of Avian Biology

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“…We predicted that survival rates of our study population might be high because the population is resident year‐round and occurs on a tropical island near the equator. Our estimate of apparent annual adult survival of Φ 2+ = 0.849 ± 0.013 for Kentish plovers in Maio is relatively high compared to other populations at mainland locations as estimates of apparent adult survival for mainland populations of Kentish and snowy plover (a close relative of the Kentish plover), range from 0.61 to 0.64 in the Netherlands (Foppen et al 2006), 0.64 ± 0.01 SE in Turkey (Sandercock et al 2005), 0.687 ± 0.039 SE in Utah (Paton 1994), 0.756 ± 0.05 SE in Spain (Garcias and Tavecchia 2018), and up to 0.720–0.759 for a population in coastal California (Stenzel et al 2011). Our estimate was also higher than another population of Kentish plovers in the Canary Islands (0.68, Tejera et al 2022) but was comparable to survival rates of other tropical island populations of Charadrius plovers from Madagascar (0.892–0.923, Jones et al 2022).…”

Section: Discussionmentioning

confidence: 99%

Climatic variation influences annual survival of an island‐breeding tropical shorebird

Engel,

Sandercock,

Kosztolányi

et al. 2024

Journal of Avian Biology

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Global biodiversity loss is a major environmental concern. The wildlife on islands are particularly vulnerable to threats posed by alien predators, habitat loss and overexploitation. Effective conservation management of vulnerable species requires reliable information on vital population rates for all life stages and an understanding of key environmental drivers. However, demographic data are often not available for island populations before they decline or are extirpated. Here, we use Cormack–Jolly–Seber (CJS) models and 15 years of data for 1370 juveniles and 687 adults to estimate apparent survival for a genetically distinct resident population of Kentish plovers Charadrius alexandrinus on the island of Maio, Cabo Verde. We report two main findings. First, environmental conditions have a large effect on demographic performance since chicks that hatch during dry years experience a tenfold reduction in first‐year survival compared to chicks that hatch during wet years. Second, female and male plovers in Maio are expected to live for 7.41 ± 0.69 (mean ± SE) years and 6.75 ± 0.64 years, respectively, due to relatively high annual survival among comparable‐sized shorebirds. High adult survival thus could buffer the population against low reproductive success that this population has experienced over the last decade. Cabo Verde is typical of tropical islands with increased development that can impact native breeders and/or will accelerate habitat loss. Thus, more frequent droughts associated with climate change may exacerbate the prospects of native wildlife on many islands.

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Modelling Beach Litter Accumulation on Mediterranean Coastal Landscapes: An Integrative Framework Using Species Distribution Models

Febbraro

Frate

Francesco

et al. 2021

Land

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Beach litter accumulation patterns are influenced by biotic and abiotic factors, as well as by the distribution of anthropogenic sources. Although the importance of comprehensive approaches to deal with anthropogenic litter pollution is acknowledged, integrated studies including geomorphologic, biotic, and anthropic factors in relation to beach debris accumulation are still needed. In this perspective, Species Distribution Models (SDMs) might represent an appropriate tool to predict litter accumulation probability in relation to environmental conditions. In this context, we explored the applicability of a SDM–type modelling approach (a Litter Distribution Model; LDM) to map litter accumulation in coastal sand dunes. Starting from 180 litter sampling plots combined with fine–resolution variables, we calibrated LDMs from litter items classified either by their material type or origin. We also mapped litter accumulation hotspots. LDMs achieved fair-to-good predictive performance, with LDMs for litter classified by material type performing significantly better than models for litter classified by origin. Accumulation hotspots were mostly localized along the beach, by beach accesses, and at river mouths. In light of the promising results achieved by LDMs in this study, we conclude that this tool can be successfully applied within a coastal litter management context.

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Apparent Survival and Long-Term Population Growth Rate of The Kentish Plover Charadrius alexandrinus in Mallorca, Archipelago, Spain

Cited by 3 publications

References 21 publications

Exceptionally high apparent adult survival in three tropical species of plovers in Madagascar

Exceptionally high apparent adult survival in three tropical species of plovers in Madagascar

Climatic variation influences annual survival of an island‐breeding tropical shorebird

Modelling Beach Litter Accumulation on Mediterranean Coastal Landscapes: An Integrative Framework Using Species Distribution Models

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