Changes in bird assemblages in an afforestation landscape in the Lower Delta of the Paraná River, Argentina

Magnano, Andrea L.; Fracassi, Natalia; Nanni, Analía Soledad; Quintana, Rubén D.

doi:10.1080/01584197.2019.1581032

Cited by 11 publications

(4 citation statements)

References 38 publications

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“…The differential use of microhabitats has been mentioned for other taxa, such as beetles which use wood remains (Anderson et al 1978 ). The same pattern has been described for density and composition of ying insects associated with oodplains (Langhans 2005) and for bird assemblages between environmental units associated with islands (Miller et al 2004;Hamza et al 2015;Magnano et al 2019).…”

Section: Discussionsupporting

confidence: 72%

“…It has been demonstrated that those activities generate habitat fragmentation, loss of gallery forests and redistribution of animal species (Briceño Vanegas 2015; Schondube et al 2018). Some authors claim that the heterogeneity contributed by those activities favors the increase of environmental diversity through species turnover (Bó et al 2010;Frutos et al 2020 a, b), or that knowledge about this topic is still scarce (Mitchell et al 2010); other authors suggest the importance of maintaining the interior of a single environmental unit in riparian forests as heterogeneous as possible to ensure the increase of richness of species with different habitat requirements (Magnano et al 2019). Our results show no differences in the vegetation structure between the study sites, despite their different management histories.…”

Section: Discussionmentioning

confidence: 99%

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Differences of birds communities of levee forests in wetlands

Brarda

Manzano

Piña

et al. 2023

Preprint

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Context. The fluvial forests on the islands, called levee forests, have vertical vegetation stratification. This contributes to the structural complexity that allows the presence of a great bird diversity on island and among fluvial corridors. Objectives. The aim was to evaluate differences in the avifauna of levee forest. We hypothesized that birds make a differential use of the different types of levee forests, which is reflected in the bird assemblage structure of each forest type. Methods. The “Delta del Paraná” Ramsar site is a wetland of international importance. A comparative analysis of richness, abundance and diversity was conducted in the different levee forests using the point count method. Results. Three types of levee forest were obtained: open, intermediate and closed forests, according to the floristic composition, tree cover, and height of the herb stratum. A total of 85 bird species were recorded. The differences in birds communities structure were found among seasons, between sites and among forest types. We found the highest richness, abundance, and diversity values in open forests. These reveals the structural variation in the levee forests offer in their interior and show the microscale variation in forest wetlands, which have been considered a single homogeneous environmental unit in floodplains. Conclusions. The finding that open forests harbor the most heterogeneous environment in levee environments reflects the importance of microspatial-scale heterogeneity in landscape configuration and how this variation contributes to maintaining high biodiversity in fluvial wetlands for both avifauna as for the biota in general.

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Differences of birds communities of levee forests in wetlands

Brarda

Manzano

Piña

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…It is made available under a preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in The copyright holder for this this version posted December 17, 2020. ; https://doi.org/10.1101/2020. 12 . CC-BY 4.0 International license perpetuity.…”

Section: Discussionmentioning

confidence: 99%

“…Birds are conspicuous and inhabit wide variety of habitats. Changes in their population density, abundance or distribution often indicate changes in environmental conditions [12][13][14]. These changes can be the modification of their habitat, scarce food resources or absence of safe nesting sites.…”

Section: Introductionmentioning

confidence: 99%

Waterbird abundance and diversity along a stretch of Ganga River, India modified by construction of a barrage

Vasudeva

Garg

Badola

et al. 2020

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Damming and diverting river water alters the channel characteristics and natural flow regime. The change in biotic and abiotic factors results in dissimilar habitat conditions upstream and downstream of the barrage. Given the habitat dissimilarity and therefore resource availability, we hypothesized the dissimilarity in waterbird abundance and species diversity in the river habitat upstream and downstream of the barrage. The study was conducted on a 24 km stretch of Ganga River at Narora, Uttar Pradesh, India. This stretch overlaps with a Ramsar site as well as an Important Bird and Biodiversity Area (IBA). Bird sampling was done using transect count method for summer and winter season in 2017. The abundance was studied in relation to three habitat variables viz. channel depth, channel width and anthropogenic disturbances using Generalized Linear Model. A total of 140 species of birds were recorded. There was statistically significant difference in the abundance of waterbirds between upstream and downstream stretch in winter season (Mann-Whitney U, p < 0.05). During winters, migratory waterbirds especially ducks and geese occupied the deep water upstream of barrage, while the downstream was mostly occupied by terns and cormorants. Waterbird species diversity was higher in downstream during winters (Effective Number of Species=28; Shannon’s Index= 3.35) and higher in upstream during summer (Effective Number of Species=25, Shannon’s Index=2.87). Channel width, channel depth and anthropogenic disturbance influenced waterbird abundance in both the seasons (Generalized Linear Model; p < 0.05). The influence of channel depth varied with season for the upstream stretch.

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Effects of intensive human management on the taxonomic and functional diversity of ground beetles in a planted forest landscape

et al. 2021

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Ectoparasites of 18 free-living Cuban Ground Doves, Columbina passerina insularis (Columbiformes: Columbidae), captured in the National Zoological Park, Havana, Cuba, were identified. The collected ectoparasites included two species of lice (Phthiraptera: Ischnocera): Columbicola passerinae (77.1%), and Physconelloides eurysema (50%), as well as four species of feather mites (Astigmata: Falculiferidae): Pterophagus lomatus (83.3%), Byersalges talpacoti (50%), Byersalges phyllophorus (72.2%), and Hyperaspidacarus tridentatus (27.7%). Pterophagus lomatus, B. phyllophorus, and H. tridentatus represent new records for Cuba.

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Changes in bird assemblages in an afforestation landscape in the Lower Delta of the Paraná River, Argentina

Cited by 11 publications

References 38 publications

Differences of birds communities of levee forests in wetlands

Differences of birds communities of levee forests in wetlands

Waterbird abundance and diversity along a stretch of Ganga River, India modified by construction of a barrage

Effects of intensive human management on the taxonomic and functional diversity of ground beetles in a planted forest landscape

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