An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

Lima, Rafael Dantas; Silveira, Luís Fábio; Lemos, Renata Constant de Amorim; Lobo-Araújo, Lahert William; Andrade, Arthur Barbosa de; Francisco, Mercival R.; Efe, Márcio Amorim

doi:10.11606/1807-0205/2022.62.034

Cited by 4 publications

(1 citation statement)

References 59 publications

(91 reference statements)

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“…For this reason, large mammals, including the top predators (jaguars and cougars), have been long extinct in the PEC, as well as about half of the medium-sized mammals [19]. Three bird species endemic to the PEC were recently extinct (the Pernambuco pygmy owl Glaucidium mooreorum, the cryptic treehunter Cichlocolaptes mazarbarnetti, and the Alagoas foliage-gleaner Philydor novaesi) [21,22], many are nearly extinct (e.g., the black-tailed leaftosser Sclerurus caudacutus caligineus, the Alagoas antwren Myrmotherula snowi, and the Alagoas black-throated trogon Trogon muriciensis) [22][23][24], and a great wave of extinctions will likely occur in the near future if intensive management plans are not implemented [24,25]. Paradoxically, none of the recently lost species were game birds or were targets of trapping.…”

Section: Introductionmentioning

confidence: 99%

Massive Bird Nest Losses: A Neglected Threat for Passerine Birds in Atlantic Forest Fragments from the Pernambuco Endemism Center

Lobo-Araújo,

Costa,

Silveira

et al. 2024

Diversity

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Understanding the mechanisms by which tropical forest fragmentation can affect the persistence of species and populations is of scientific and practical interest. However, nest survival has been one the least addressed of the potentially harmful effects associated with habitat fragmentation, and studies involving nest predator’s identification are still underdeveloped. The Pernambuco Endemism Center (PEC) is the part of the Atlantic Forest located north of the São Francisco River, in northeastern Brazil, where large forest tracts no longer exist and a wave of bird extinctions has occurred recently. Here, we investigated the nest survival of forest understory birds from three PEC fragments (690, 979, and 1036 ha), and we used infra-red camera traps for predators’ identification. Overall, the apparent nest survival was 15.5%, and nest-day-based survival probability for the four more representative species (including two endemic and threatened taxa) were 2.6, 4.4, 6.9, and 18.9%, being 2.7 to 8.5 times smaller than populations or related taxa from the Atlantic Forest of southeastern Brazil. Predators were marmosets (25%), opossums (25%), tegu (19.4%), coati (16.7%), snakes (8.3%), and hawks (5.5%). Jackknife2 model-predicted nest predator’s richness was 20.7 (SD = 1.6). We reinforce the evidence that nest predation associated with fragmentation can affect negatively the bird populations from tropical forests.

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Section: Introductionmentioning

confidence: 99%

Massive Bird Nest Losses: A Neglected Threat for Passerine Birds in Atlantic Forest Fragments from the Pernambuco Endemism Center

Lobo-Araújo,

Costa,

Silveira

et al. 2024

Diversity

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The distribution, ecology and conservation status of the long-tailed woodnymph Thalurania watertonii

et al. 2022

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Compilation and scrutiny of all accessible specimen and observer records of the long-tailed woodnymph Thalurania watertonii, a hummingbird currently listed as ‘Endangered’ on the IUCN Red List, eliminates Guyana, Pará, Maranhão, Ceará, Rio Grande do Norte and Paraíba from its range and sets aside both Sergipe and Bahia as unproven, leaving 29 certain localities, 15 in Pernambuco and 14 in Alagoas, north-east Brazil, all of them in Atlantic Forest and not Cerrado or Caatinga. Among them are records from ten IUCN category I‒IV protected areas (seven in Pernambuco, two in Alagoas and one shared between the two). Remote sensing analysis shows all confirmed localities to contain a total of c.292 km2 of forest (with an extent of occurrence (EOO) and area of occupancy (AOO) of 16,090 and 910 km2, respectively), thus indicating the species qualifies for ‘Vulnerable’ (rather than ‘Endangered’) on the IUCN Red List. However, within the species’ range, we find a maximum total of 2568 km2 of forest, unexplored patches of which may host important populations of this and other threatened species endemic to the ‘Pernambuco Centre of Endemism’. Range-wide research is urgently needed into the condition of these sites and the status of the species within them as well as the general densities, ecology and true distribution of the species, which is now known to breed from October to March, to feed on at least 25 plant species and possibly to need shallow clean-water streams, in order to identify the key measures needed to ensure its survival.

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Taxonomic revision of the Scaled Antbird Drymophila squamata (Aves: Thamnophilidae) reveals a new and critically endangered taxon from northeastern Brazil

LIMA,

FAZZA,

MALDONADO-COELHO

et al. 2024

Zootaxa

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The Scaled Antbird Drymophila squamata is a suboscine passerine endemic to the Atlantic Forest of eastern Brazil. Two subspecies, putatively diagnosed by the presence/absence of white spots on the crown, have traditionally been recognized: the nominate, ranging from Pernambuco to Bahia in northeastern Brazil, and D. squamata stictocorypha, from Minas Gerais to Santa Catarina in southeastern and southern Brazil. Here we combine morphological, acoustic, and genetic data to examine geographic variation in and revise the taxonomy of D. squamata. We show that there are two separately evolving population lineages in D. squamata, one south and the other north of the São Francisco River. The latter is unnamed and is thus described herein. We found that crown variation is not as geographically structured as previously thought, and thus we suggest that D. squamata stictocorypha is not a valid taxon. Finally, we also provide evidence of clinal variation in the species’ vocalizations and underscore the importance of broad geographic sampling when assessing species limits using vocalizations.

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An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

Cited by 4 publications

References 59 publications

Massive Bird Nest Losses: A Neglected Threat for Passerine Birds in Atlantic Forest Fragments from the Pernambuco Endemism Center

Massive Bird Nest Losses: A Neglected Threat for Passerine Birds in Atlantic Forest Fragments from the Pernambuco Endemism Center

The distribution, ecology and conservation status of the long-tailed woodnymph Thalurania watertonii

Taxonomic revision of the Scaled Antbird Drymophila squamata (Aves: Thamnophilidae) reveals a new and critically endangered taxon from northeastern Brazil

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