Rose-ringed Parakeet Psittacula krameri Populations and Numbers in Europe: A Complete Overview

Pârâu, Liviu G.; Strubbe, Diederik; Mori, Emiliano; Menchetti, Mattia; Ancillotto, Leonardo; Kleunen, A. van; White, Rachel L.; Luna, Álvaro Fernández; Hernández‐Brito, Dailos; Louarn, Marine Le; Clergeau, Philippe; Albayrak, Tamer; Franz, Detlev; Braun, Michael P.; Schroeder, Julia; Wink, Michael

doi:10.2174/1874453201609010001

Cited by 68 publications

(59 citation statements)

References 31 publications

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“…With regards to the intrinsic characteristics of alien bird species, the trait with the strongest effect on impact data availability was relative brain size (Table 2). Parrots account for most of the 30 species with the largest brains in our dataset (n = 25), and are conspicuously successful at establishing in large urban centres (Butler 2005, Menchetti and Mori 2014, Pârâu et al 2016. Large-brained birds have also been shown to possess higher levels of urban tolerance and to be more successful at establishing within urban environments due to their propensity for innovative behavior (Maklakov et al 2011).…”

Section: Discussionmentioning

confidence: 98%

“…Large-brained birds have also been shown to possess higher levels of urban tolerance and to be more successful at establishing within urban environments due to their propensity for innovative behavior (Maklakov et al 2011). Parrots account for most of the 30 species with the largest brains in our dataset (n = 25), and are conspicuously successful at establishing in large urban centres (Butler 2005, Menchetti and Mori 2014, Pârâu et al 2016. For example, rose-ringed parakeets Psittacula krameri have established breeding populations in major urban areas across ten European countries, with a conservative European population estimate of more than 85 000 individuals (Pârâu et al 2016).…”

Section: Discussionmentioning

confidence: 98%

“…Bird species with large brains, relative to their body mass, have been shown to be more successful at establishing in novel environments, which is argued to be due to their enhanced ecological flexibility (Sol et al 2005). For example, rose-ringed parakeets Psittacula krameri have established breeding populations in major urban areas across ten European countries, with a conservative European population estimate of more than 85 000 individuals (Pârâu et al 2016). Parrots account for most of the 30 species with the largest brains in our dataset (n = 25), and are conspicuously successful at establishing in large urban centres (Butler 2005, Menchetti and Mori 2014, Pârâu et al 2016.…”

Section: Discussionmentioning

confidence: 99%

“…Parrots account for most of the 30 species with the largest brains in our dataset (n = 25), and are conspicuously successful at establishing in large urban centres (Butler 2005, Menchetti and Mori 2014, Pârâu et al 2016. For example, rose-ringed parakeets Psittacula krameri have established breeding populations in major urban areas across ten European countries, with a conservative European population estimate of more than 85 000 individuals (Pârâu et al 2016). Other Psittaciform species with established alien populations in large cities include monk parakeets Myiopsitta monachus in New York, red-breasted parakeets Psittacula alexandri in Singapore, red-crowned parrots Amazona viridigenalis in San Diego, and rainbow lorikeets Trichoglossus haematodus and little corellas Cacatua sanguinea in Perth.…”

Section: Discussionmentioning

confidence: 99%

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Determinants of data deficiency in the impacts of alien bird species

et al. 2018

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To identify the factors that influence the availability of data on the negative impacts of alien bird species, in order to understand why more than 70% are currently classified as Data Deficient (DD) by the Environmental Impact Classification of Alien Taxa (EICAT) protocol.Information on factors hypothesised to influence the availability of impact data were collated for 344 alien bird species (107 with impact data and 237 DD). These data were analysed using mixed effects models accounting for phylogenetic non-independence of species (MCMCglmm).Data deficiency in the negative impacts of alien birds is not randomly distributed. Residence time, relative brain size and alien range size were found to be strongly related to the availability of data on impacts.The availability of data on the negative impacts of alien birds is mainly influenced by the spatial and temporal extents of their alien ranges. The results of this study suggest that the impacts of some DD alien birds are likely to be minor (e.g. species with comparatively long residence times as aliens, such as the common waxbill Estrilda astrild and the Java sparrow Padda oryzivora). However, the results also suggest that some DD alien birds may have damaging impacts (e.g. species from orders of alien birds known for their impacts to biodiversity but with comparatively small alien ranges, such as the New Caledonian crow Corvus moneduloides). This implies that at least some DD alien birds may have impacts that are being overlooked. Studies examining the traits that influence the severity of alien bird impacts are needed to help to predict which DD species are more likely to impact upon biodiversity.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Determinants of data deficiency in the impacts of alien bird species

et al. 2018

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“…This green parakeet is native to India and sub-Saharan Africa [5] and, due to its popularity as a pet bird, has been widely introduced in Europe through the exotic pet trade. The number of "rewilded" individuals is estimated to more than 85,000 in 2015, with increasing populations established in cities across ten European countries [6]. In its introduced range, this parakeet may cause several impacts on native biodiversity and anthropic activities.…”

Section: Introductionmentioning

confidence: 99%

“Kill Two Birds with One Stone”: Urban Tree Species Classification Using Bi-Temporal Pléiades Images to Study Nesting Preferences of an Invasive Bird

et al. 2017

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This study presents the results of object-based classifications assessing the potential of bi-temporal Pléiades images for mapping broadleaf and coniferous tree species potentially used by the ring-necked parakeet Psittacula krameri for nesting in the urban area of Marseille, France. The first classification was performed based solely on a summer Pléiades image (acquired on 28 July 2015) and the second classification based on bi-temporal Pléiades images (a spring image acquired on 24 March 2016 and the summer image). An ensemble of spectral and textural features was extracted from both images and two machine-learning classifiers were used, Random Forest (RF) and Support Vector Machine (SVM). Regardless of the classifiers, model results suggest that classification based on bi-temporal Pléiades images produces more satisfying results, with an overall accuracy 11.5-13.9% higher than classification using the single-date image. Textural and spectral features extracted from the blue and the NIR bands were consistently ranked among the most important features. Regardless of the classification scheme, RF slightly outperforms SVM. RF classification using bi-temporal Pléiades images allows identifying 98.5% of the tree species used by the ring-necked parakeet for nesting, highlighting the promising value of remote sensing techniques to assess the ecological requirements of fauna in urban areas.

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Avian species richness and tropical urbanization gradients: Effects of woodland retention and human disturbance

Thaweepworadej

Evans

2022

Ecological Applications

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Urbanization is a major driver of tropical biodiversity loss. In temperate regions avian species richness-urbanization intensity relationships typically exhibit unimodal patterns, with peak richness at intermediate urbanization levels. In tropical regions, the form of such relationships and the extent to which they are moderated by patches of seminatural habitat are unclear. We address these questions in Bangkok, Thailand (one of the largest and most rapidly expanding tropical mega-cities) and generate conservation recommendations for tropical biodiversity in urban locations. We use repeated point count surveys at a random location, and the largest available woodland patch, in 150 1 km Â 1 km grid cells selected along the urbanization gradient. Woodland patches support higher species richness compared with randomized locations (except for non-natives), and avian species richness declines linearly with increasing urbanization. The contrast with unimodal patterns in temperate regions is probably driven by divergent patterns of habitat heterogeneity along tropical and temperate urbanization gradients. Moreover, we provide novel evidence that retaining patches of urban woodland moderates adverse impacts of urbanization on avian species richness. For most species groups, the benefits of woodland increase as urbanization intensifies, despite such woodland patches being very small (mean of 0.38 ha). Avian species richness in woodland patches is maximized, and community composition less similar to that in randomized locations, when woodland patches are larger and visited by fewer people. Assemblages of forest-dependent species (which provide additional ecological functions) have higher richness, and are less similar to those in randomized locations, in patches of woodland with higher tree species richness and biomass. Finally, species richness in randomized sites is greatest when they are closer to woodland patches, and such assemblages more closely resemble those of woodland sites. Our work highlights four strategies for tropical urban bird conservation: (1) conserving woodland patches across the urbanization gradient regardless of patch size, (2) improving the quality of existing woodland by increasing tree biomass and diversity, (3) creating additional woodland that is well distributed throughout the urban area to

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Rose-ringed Parakeet Psittacula krameri Populations and Numbers in Europe: A Complete Overview

Abstract: 46Alien species are considered one of the major causes contributing to the current loss of

Cited by 68 publications

References 31 publications

Determinants of data deficiency in the impacts of alien bird species

Determinants of data deficiency in the impacts of alien bird species

“Kill Two Birds with One Stone”: Urban Tree Species Classification Using Bi-Temporal Pléiades Images to Study Nesting Preferences of an Invasive Bird

Avian species richness and tropical urbanization gradients: Effects of woodland retention and human disturbance

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