cris.boxmetadata.label.title
Nonrandom spatial distribution of Neotropic Cormorants (Phalacrocorax brasilianus) along a coastal highway in Lima, Peru
cris.boxmetadata.label.dateissued
01 browse.startsWith.months.march 2021
cris.boxmetadata.label.accesslevel
open access
cris.boxmetadata.label.resourcetype
journal article
cris.boxmetadata.label.authors
Lozano-Sanllehi S.
ZAVALAGA REYES, CARLOS BRAXTZO PHIL
cris.boxmetadata.label.publisher
Public Library of Science
cris.boxmetadata.label.abstract
Neotropic Cormorants (Phalacrocorax brasilianus) are common seabirds along the Peruvian coast. They frequently perch on trees, poles and port structures in urban areas, producing guano that builds up in areas of high levels of human activity. Hundreds of Neotropic Cormorants rest on lighting poles and telephone cables along a 12.7 km highway in the coastal strip of the city of Lima, Peru. We hypothesized that the distribution of the cormorants along this highway is clustered and could be associated with physical features of both the coast and the adjacent marine area. Fortnightly or monthly surveys were performed from July 2018 to March 2020 in the Circuito de Playas de la Costa Verde highway. At each survey, cormorants were counted per lighting pole and adjacent telephone cables (collectively, “pole-cable”) at four count hours (0600 h, 1000 h, 1400 h and 1800 h). Our results revealed that daily bird numbers varied from 46 to 457 individuals and that only 17% of the total number of pole-cables (N = 651) was occupied once by at least one individual. The number of cormorants also varied between count hours within the same day (higher numbers at 1000 h and 1400 h). Birds were clustered into a maximum of five hotspots along the highway. According to a model selection criterion, higher numbers of cormorants on pole-cables were associated mainly to a closer distance from these structures to the shoreline and to the surf zone, suggesting that Neotropic Cormorants may select such pole-cables as optimal sites for sighting and receiving cues of prey availability. Based on the results, the use of nonlethal deterrents and the relocation of these birds to other perching structures on nearby groynes could be the most suitable management proposal for the problems caused by their feces.
cris.boxmetadata.label.volume
16
cris.boxmetadata.label.issue
3 March
cris.boxmetadata.label.language
English
cris.boxmetadata.label.ocdeknowledgeArea
Oceanografía, Hidrología, Recursos hídricos Ecología Biología marina, Biología de agua dulce, Limnología
cris.boxmetadata.label.doi
cris.boxmetadata.label.scopusidentifier
2-s2.0-85102325402
cris.boxmetadata.label.pubmedidentifier
cris.boxmetadata.label.source
PLoS ONE
cris.boxmetadata.label.containerissn
19326203
cris.boxmetadata.label.sponsor
SLS received the grant "Concurso de Fondos para Proyectos de Tesis 2018-1" from Universidad Científica del Sur (https://www. cientifica.edu.pe/investigacion/concursos-fondosinternos). The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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