Ground nest predation might not be higher along edges of Neotropical forest remnants surrounded by pastures: evidence from the Brazilian Atlantic forest

Chiarello, Adriano Garcia; Srbek‐Araujo, Ana Carolina; Duque, Hermano José Del; Coelho, Eduardo de R.

doi:10.1007/s10531-008-9422-4

Cited by 8 publications

(2 citation statements)

References 34 publications

(63 reference statements)

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“…This is why many researchers have sought to quantify the factors affecting nesting success/failure of birds often through the use of artificial nests (Vander Haegen & DeGraaf ; Chiarello et al . ; Ponce et al . ).…”

Section: Discussionmentioning

confidence: 98%

Does land use change influence predation of bird nests?

2019

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Worldwide, many areas of agricultural land which were once covered with native vegetation have been converted to tree plantations. Such landscape transformation can influence the dynamics of wildlife populations through, for example, altering rates of predation (e.g. predation of nests of birds). Nest predation can influence reproductive success and, in turn, may alter populations by affecting juvenile recruitment. We quantified predation of bird nests in woodland remnants surrounded by two types of land use, grazing farmland and exotic Radiata pine (Pinus radiata) plantation. We also examined differences in predation rates between artificial and natural nests. We found both artificial and natural nests were more susceptible to nest predation in woodland remnants surrounded by a pine plantation than in woodland remnants located within farmland. Our study suggests that higher levels of nest predation may reduce occupancy of woodland remnants by small-bodied birds over time, including species of conservation concern. This may have been occurred as a result of the conversion of semi-cleared grazing land to exotic pine plantation.

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Section: Discussionmentioning

confidence: 98%

Does land use change influence predation of bird nests?

2019

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“…As with natural nests, predation risk was influenced by habitat or nest characteristics (França & Marini 2009a, Chiarello et al 2008, Boyle 2008, Alvarez & Galetti 2007, Robinson et al 2005. Experiments with artificial nests in the neotropics detect spatial and temporal variation in nest predation risk, yet how these effects resemble those observed for natural nests are unknown.…”

Section: Introductionmentioning

confidence: 99%

Predation on artificial nests in open habitats of central Brazil: effects of time and egg size

et al. 2013

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Abstract:The accuracy of artificial nests in representing natural patterns of nest predation has been widely studied in temperate regions and egg size is one of the most tested sources of bias. In the neotropics, experiments with artificial nests usually used larger than natural eggs, despite suggestions in literature that the eggs should be similar to those of the local species. Here, we tested the hypothesis of spatial-temporal variation in predation risk of artificial nests in relation to egg size. We used quail (Coturnix coturnix; large), Chestnut-bellied Seedfinch (Oryzoborus angolensis; small) and plasticine (both sizes) eggs placed in artificial nests. We analyzed daily nest survival using models in the Program MARK. The best-fit model included the effects of egg size and the reproductive period on daily survival of artificial nests. Nests with large eggs had greater Daily Survival Estimates (DSE) than nests with small eggs during two times and DSE were smaller early in the reproductive period. DSE of 0.82 (95% CI = 0.76 to 0.86) and 0.91 (0.87 to 0.93) were recorded for large eggs at the beginning and end periods compared to 0.72 (0.65 to 0.78) and 0.84 (0.79 to 0.88) for small eggs. Birds were more important predators (40% of records) than mammals and reptiles based on signs left on the plasticine eggs. Our results support the hypothesis that larger eggs are less depredated than small ones in artificial bird nests, even when main predators (birds) are different from those commonly observed in the Neotropics (mammals and reptiles). However, controlling the egg size in experiments with artificial nests may not be sufficient to obtain similar time patterns observed in natural nests studied in the Cerrado. Resumo: A acurácia de ninhos artificiais em representar padrões naturais de predação de ninhos foi amplamente estudada em regiões temperadas, sendo o tamanho do ovo uma das fontes de erro mais testadas. Nos Neotrópicos, os experimentos com ninhos artificiais geralmente usaram ovos maiores que os naturais, apesar da literatura indicar a necessidade do uso de ovos semelhantes aos das espécies locais. Aqui, testamos hipóteses sobre variação espaço-temporal no risco de predação de ninhos artificiais em função do tamanho do ovo. Para isso, usamos ninhos artificiais com ovos de Codorna (Coturnix coturnix; grandes), Curió (Oryzoborus angolensis; pequenos) e plasticina (ambos tamanhos). Analisamos a sobrevivência diária dos ninhos através de modelos gerados no Programa MARK. O modelo melhor ajustado aos dados incluiu o efeito do tamanho do ovo e do período reprodutivo na sobrevivência diária dos ninhos artificiais. Ninhos com ovos grandes tiveram maiores Estimativas de Sobrevivência Diária (ESD) durante os dois períodos, além disso, as ESD foram menores no início do período reprodutivo. ESD de 0,82 (95% IC = 0,76 a 0,86) e 0,91 (0,87 a 0,93) foram registradas para ovos grandes no início e fim da estação reprodutiva, comparado com 0,72 (0,65 a 0,78) e 0,84 (0,79 a 0,88) registradas para ovos pequenos. As aves fora...

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