Bird-grassland associations in protected and non-protected areas in southern Brazil

Jacoboski, Lucilene Inês; Paulsen, Raquel Klein; Hartz, Sandra Maria

doi:10.1016/j.pecon.2017.05.002

Cited by 15 publications

(27 citation statements)

References 12 publications

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“…These varied responses of birds to bushfires may be due to their tolerance or resilience level at different burning frequency and intensity. Other environmental factors, namely, predation and food scarcity [71], farming practice and urban development [72][73][74], habitat fragmentation [72,75], cutting of mangrove vegetation [76], and deforestation [24], have been reported to affect bird populations in other ecosystems. Recent reports have shown that birds have gone extinct at an exceptionally high rate, estimated to be 1,000 to 10,000 times the natural background rate [16].…”

Section: Discussionmentioning

confidence: 99%

Avian Community Structure as a Function of Season, Habitat Type, and Disturbance, in Mole National Park, Northern Region (Ghana)

Nsor

Acquah

Mensah

et al. 2018

International Journal of Ecology

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The study assessed factors that influenced bird-habitat preference, diversity, and spatial distribution in Mole National Park. Birds were identified using point count sampling method, while ordination techniques were performed to determine the influence of environmental factors on bird-habitat preference. A total of 4951 individuals belonging to 131 species were identified across the four habitat types in the wet (n = 3033) and dry (n = 1648) seasons. Despite the high abundance and richness of birds in the woodland and shrubland habitats, grassland habitat was the most diverse, due to the high spatial evenness distribution of the birds. Bushfire, patchiness, and animal trampling were the key environmental determinants in bird assemblages and habitat preferences and accounted for 62.02% and 81.82% variations in the two seasons. Rarer birds like White-Backed Vulture (NT) and White-Headed Vulture (CR), Bateleur Eagle (NT), and Woolly-Necked Stork (VU), with high conservation concern, suggest intensification of conservation effort, while the dominance of Sahel Bush-sparrow was probably due to their broad range habitat preferences and ability to adapt to environmental conditions across these habitats. These species could be used as indicators of habitat quality, if future scenarios restrict their movement or distribution in narrow range habitats.

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Section: Discussionmentioning

confidence: 99%

Avian Community Structure as a Function of Season, Habitat Type, and Disturbance, in Mole National Park, Northern Region (Ghana)

Nsor

Acquah

Mensah

et al. 2018

International Journal of Ecology

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“…Furthermore, woody invasives are replacing grassland over longer timescales (Arasumani et al, 2018), and thereby are likely to also constrain occupancy. Several studies have found detrimental impacts of spreading woody exotic species on grassland avifauna, including in the Brazilian Pampas (Azpiroz et al, 2012;Jacoboski et al, 2017) and South African highland grasslands (Allan, Harrison, Navarro, Van Wilgen, & Thompson, 1997), suggesting that such a spread is a widespread phenomenon globally, requiring broader attention.…”

Section: Discussionmentioning

confidence: 99%

Local extinction of a montane, endemic grassland bird driven by landscape change across its global distribution

Lele

Arasumani

Vishnudas

et al. 2019

Preprint

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28Context 29 Tropical montane habitats support high biodiversity, and are hotspots of endemism, with 30 grasslands being integral components of many such landscapes. The montane grasslands of the 31 Western Ghats have seen extensive land-use change over anthropogenic timescales. The factors 32 influencing the ability of grassland-dependent species to persist in habitats experiencing loss and 33 fragmentation, particularly in montane grasslands, are poorly known. 34Objectives 35 We studied the relationship between the Nilgiri pipit Anthus nilghiriensis, a threatened endemic 36 bird that typifies these montane grasslands, and its habitat, across most of its global distribution. 37 We examined what habitat features make remnants viable habitat, which is necessary for 38 effective management. 39 Methods 40We conducted 663 surveys in 170 sites and used both single-season occupancy modelling and N-41 mixture modelling to account for processes influencing detection, presence, and abundance. 42 Results 43Elevation had a positive influence on species presence, patch size had a moderate positive 44 influence and patch isolation a moderate negative influence. Species abundance was positively 45 influenced by elevation and characteristics related to habitat structure, and negatively influenced 46 by the presence of invasive woody vegetation. 47 Conclusions 48The strong effect of elevation on the highly range-restricted Nilgiri pipit makes it vulnerable to, 49 and an indicator of, climate change. This highly range-restricted species is locally extinct at 50 several locations and persists at low densities in remnants of recent fragmentation, suggesting an 51 extinction debt. Our findings indicate a need to control and reverse the spread of exotic woody 52 invasives to preserve the grasslands themselves and the specialist species dependent upon them. 53 54

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“…The PPAs that were composed mostly forest vegetation were not included. Sampled PPAs had a minimum width of 100 m [1]. For the grazed grassland sites, excessively grazed areas were not considered.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The data we share here is composed by recordings of bird species from natural forests, grasslands and exotic plantations of eucalyptus. The data represents the number of individuals of bird species in each of the 32 sites sampled [[1], [2]]. At the end of the study, 107 species and 1175 individuals were registered (Appendix 1).…”

Section: Datamentioning

confidence: 99%

Database of bird species composition in natural habitats and forest plantations

et al. 2019

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In southeastern South America, the afforestation over grasslands imposes a severe threat to the grassy landscapes and associated biodiversity. To analyze the effect of forest plantations on grassland birds, we present a new database that considers the composition of bird communities in natural habitats, as well as in eucalyptus plantations from the southeastern South American grasslands. Data were previously used to investigate the effectiveness of legally protected grasslands in private lands to protect birds in “Bird-grassland associations in protected and non-protected areas in the southern Brazil” [1] and also the effects of afforestation of grasslands on different dimensions of bird diversity in “The effects of grassland ecosystem afforestation on avian phylogenetic diversity, taxonomic diversity and evolutionary distinctiveness” [2]. Data were collected during the breeding period of bird species (spring/austral summer), covering three breeding seasons during the years 2014–2016. Species presence and number of individuals were recorded, totaling 107 species and 1175 individuals. The dataset will be useful for researchers interested in conservation studies as it includes data from globally threatened bird species.

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Bird-grassland associations in protected and non-protected areas in southern Brazil

Cited by 15 publications

References 12 publications

Avian Community Structure as a Function of Season, Habitat Type, and Disturbance, in Mole National Park, Northern Region (Ghana)

Avian Community Structure as a Function of Season, Habitat Type, and Disturbance, in Mole National Park, Northern Region (Ghana)

Local extinction of a montane, endemic grassland bird driven by landscape change across its global distribution

Database of bird species composition in natural habitats and forest plantations

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