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Record W4392590650 · doi:10.55431/jco.2024.37.12-17

Apparent range expansion or recolonization of Puerto Rican Nightjars (Guabairo; <i>Antrostomus noctitherus</i>) on the Cabo Rojo National Wildlife Refuge

2024· article· en· W4392590650 on OpenAlexafffund
Leanne A. Grieves, Quinlan M. Mann, Michael J. Morel, James S. Quinn

Bibliographic record

VenueJournal of Caribbean Ornithology · 2024
Typearticle
Languageen
FieldEnvironmental Science
TopicWildlife Ecology and Conservation
Canadian institutionsMcMaster University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsWildlife refugeGeographyWildlifeRange (aeronautics)DemographyEcologySociologyBiologyEngineering

Abstract

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Abstract The Puerto Rican Nightjar (Guabairo, Antrostomus noctitherus) is an Endangered bird species endemic to Puerto Rico. Typically inhabiting subtropical dry and lower montane forests, the species is currently rare to locally common from the southwest coast eastward to Guayama. However, based on the most recent population modeling from 2010 and individual observations made by community members, nightjars may be more abundant and widely distributed than previously known. Consistent with this, during November and December 2021, we observed at least two Puerto Rican Nightjars on the Cabo Rojo National Wildlife Refuge in southwestern Puerto Rico, where the species has not been previously reported. Given the presence of this species in nearby areas of the Cabo Rojo municipality (e.g., in Punta Melones), our observations suggest a range expansion or recolonization, and could reflect an increase in species abundance. Targeted population monitoring and spatial tracking of the Puerto Rican Nightjar are needed to enable more robust population estimates that will inform future evaluations of this endangered endemic’s conservation status. We further recommend additional land protection measures to safeguard suitable nightjar breeding habitat in the Cabo Rojo region. Keywords Antrostomus noctitherus, Caprimulgidae, Endangered species, Puerto Rican Nightjar, Puerto Rico, range expansion Resumen Expansión aparentedel área de distribución o recolonización del Guabairo puertorriqueño (Antrostomus noctitherus) en el Refugio Nacional de Vida Silvestre de Cabo Rojo • El Guabairo puertorriqueño (Antrostomus noctitherus) es una especie de ave endémica de Puerto Rico en peligro de extinción. Generalmente habita en bosques subtropicales secos y montanos bajos y en la actualidad se considera una especie rara o localmente común desde la costa suroeste hacia el este hasta Guayama. Sin embargo, según el modelo de población más reciente de 2010 y las observaciones individuales realizadas por miembros de la comunidad, los guabairos podrían ser más abundantes y estar más ampliamente distribuidos de lo que se conocía anteriormente. En consonancia con esto, durante noviembre y diciembre de 2021, observamos al menos dos guabairos puertorriqueños en el Refugio Nacional de Vida Silvestre de Cabo Rojo en el suroeste de Puerto Rico, donde la especie no había sido reportada previamente. Dada la presencia de esta especie en áreas cercanas del municipio Cabo Rojo (por ejemplo, en Punta Melones), nuestras observaciones sugieren una expansión del área de distribución o recolonización, y podrían reflejar un aumento en su abundancia. Se necesitan monitoreos poblacionales dirigidos y seguimientos espaciales del Guabairo puertorriqueño para tener estimaciones poblacionales más robustas que sirvan de base para evaluaciones futuras del estado de conservación de esta especie endémica en peligro de extinción. Además, recomendamos medidas adicionales de protección del territorio para salvaguardar el hábitat adecuado para la reproducción de A. noctitherus en la región de Cabo Rojo. Palabras clave Antrostomus noctitherus, Caprimulgidae, especie en peligro de extinción, expansión del área de distribución, Guabairo puertorriqueño, Puerto Rico Résumé Expansion de l’aire de répartition ou recolonisation apparente de l’Engoulevent de Porto Rico (Guabairo ; Antrostomus noctitherus) dans le Cabo Rojo National Wildlife Refuge • L’Engoulevent de Porto Rico (Guabairo, Antrostomus noctitherus) est une espèce d’oiseau en danger, endémique de Porto Rico. Occupant généralement les forêts subtropicales sèches et les forêts de montagne de basse altitude, l’espèce est actuellement considérée comme rare à localement commune depuis la côte sud-ouest jusqu’à Guayama vers l’est. Cependant, d’après la modélisation la plus récente de la population en 2010 et les observations ponctuelles faites par des membres de la communauté, les engoulevents pourraient être plus abondants et plus largement présents que ce qui était connu auparavant. En novembre et décembre 2021, nous avons observé au moins deux Engoulevents de Porto Rico dans le Cabo Rojo National Wildlife Refuge, dans le sud-ouest de Porto Rico, où l’espèce n’avait jamais été signalée. Compte tenu de la présence de cette espèce dans des zones voisines de la municipalité de Cabo Rojo (p. ex. à Punta Melones), nos observations suggèrent une expansion de l’aire de répartition ou une recolonisation, et pourraient refléter une augmentation de l’abondance. Un suivi ciblé de la population et un suivi spatial de l’Engoulevent de Porto Rico sont nécessaires pour permettre des estimations plus fiables de la population qui contribueront aux évaluations futures du statut de conservation de cette espèce endémique en danger. Nous recommandons en outre des mesures supplémentaires de protection des terres pour protéger l’habitat de nidification de cet engoulevent dans la région de Cabo Rojo. Mots clés Antrostomus noctitherus, Caprimulgidae, Engoulevent de Porto Rico, espèce en danger, expansion de l’aire de répartition, Porto Rico

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.085
Threshold uncertainty score0.169

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.017
GPT teacher head0.247
Teacher spread0.230 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

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Citations0
Published2024
Admission routes2
Has abstractyes

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