PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA

PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA

Plecturocebus ornatus is an endemic vulnerable species due to its population decline and its restricted range within the Eastern Plains of Colombia. This region is affected by deforestation as a result of legal and illegal economic activities. The aim of this work was to analyze the presence and abundance of P. ornatus during a period of urban and livestock production expansion (1986-2019) in Villavicencio, Colombia. This municipality is the most affected by land-use changes associated with regional economic development and represents 3.4 % of P. ornatus distribution’s area. The analysis was performed using satellite images Landsat 4 and 8, with V-Late in ArcGIS 10.5 to describe landscape structure, and P. ornatus occurrence records, obtained through field observations and the Global Biological Information Facility. Densities were calculated for each fragment based on total individuals observed by transect. A generalized lineal model was used to evaluate the effects of patch-scale, landscape-scale and other variables on P. ornatus abundance. By 1986 the rural and peri-urban areas of Villavicencio were already a transformed landscape. During the analyzed period, landscape was predominantly made up of disconnected linear fragments with a secondary humid forest cover. Around 82.1 % of the fragments with P. ornatus records are threatened by urbanization and only 50 % are in protected areas. Densities varied from 0.00 to 7.26 ind/ha (0.00–726.82 ind/km2). Abundance of P. ornatus was highly influenced by landscape-scale variables related with landscape connectivity, as well as fragment area and number of other primate species. Therefore, the implementation of restoration measures that increase landscape connectivity and habitat availability is proposed, as well as more control over environmental land-use planning, to contribute to the conservation of P. ornatus in urban areas.

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Main Authors: Ortiz-Moreno, Martha Lucia, Rojas, Nathaly, Aguilar, Lina, Lopes, Luciano Elsinor, A. Ferreira, Patricia, Carretero-Pinzón, Xyomara, R. Pires, José Salatiel
Format: Digital revista
Language:spa
Published: Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología 2022
Online Access:https://revistas.unal.edu.co/index.php/actabiol/article/view/91023
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id oai:www.revistas.unal.edu.co:article-91023
record_format ojs
institution UNAL
collection OJS
country Colombia
countrycode CO
component Revista
access En linea
databasecode rev-actabol
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region America del Sur
libraryname Sistema Nacional de Bibliotecas de la UNAL
language spa
format Digital
author Ortiz-Moreno, Martha Lucia
Rojas, Nathaly
Aguilar, Lina
Lopes, Luciano Elsinor
A. Ferreira, Patricia
Carretero-Pinzón, Xyomara
R. Pires, José Salatiel
spellingShingle Ortiz-Moreno, Martha Lucia
Rojas, Nathaly
Aguilar, Lina
Lopes, Luciano Elsinor
A. Ferreira, Patricia
Carretero-Pinzón, Xyomara
R. Pires, José Salatiel
PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
author_facet Ortiz-Moreno, Martha Lucia
Rojas, Nathaly
Aguilar, Lina
Lopes, Luciano Elsinor
A. Ferreira, Patricia
Carretero-Pinzón, Xyomara
R. Pires, José Salatiel
author_sort Ortiz-Moreno, Martha Lucia
title PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
title_short PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
title_full PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
title_fullStr PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
title_full_unstemmed PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA
title_sort presence of an endangered endemic primate in an ever-changing landscape in the eastern plains of colombia
description Plecturocebus ornatus is an endemic vulnerable species due to its population decline and its restricted range within the Eastern Plains of Colombia. This region is affected by deforestation as a result of legal and illegal economic activities. The aim of this work was to analyze the presence and abundance of P. ornatus during a period of urban and livestock production expansion (1986-2019) in Villavicencio, Colombia. This municipality is the most affected by land-use changes associated with regional economic development and represents 3.4 % of P. ornatus distribution’s area. The analysis was performed using satellite images Landsat 4 and 8, with V-Late in ArcGIS 10.5 to describe landscape structure, and P. ornatus occurrence records, obtained through field observations and the Global Biological Information Facility. Densities were calculated for each fragment based on total individuals observed by transect. A generalized lineal model was used to evaluate the effects of patch-scale, landscape-scale and other variables on P. ornatus abundance. By 1986 the rural and peri-urban areas of Villavicencio were already a transformed landscape. During the analyzed period, landscape was predominantly made up of disconnected linear fragments with a secondary humid forest cover. Around 82.1 % of the fragments with P. ornatus records are threatened by urbanization and only 50 % are in protected areas. Densities varied from 0.00 to 7.26 ind/ha (0.00–726.82 ind/km2). Abundance of P. ornatus was highly influenced by landscape-scale variables related with landscape connectivity, as well as fragment area and number of other primate species. Therefore, the implementation of restoration measures that increase landscape connectivity and habitat availability is proposed, as well as more control over environmental land-use planning, to contribute to the conservation of P. ornatus in urban areas.
publisher Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología
publishDate 2022
url https://revistas.unal.edu.co/index.php/actabiol/article/view/91023
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spelling oai:www.revistas.unal.edu.co:article-910232022-04-30T18:36:48Z PRESENCE OF AN ENDANGERED ENDEMIC PRIMATE IN AN EVER-CHANGING LANDSCAPE IN THE EASTERN PLAINS OF COLOMBIA Presencia de un primate endémico y amenazado en un paisaje cambiante en los Llanos Orientales de Colombia Ortiz-Moreno, Martha Lucia Rojas, Nathaly Aguilar, Lina Lopes, Luciano Elsinor A. Ferreira, Patricia Carretero-Pinzón, Xyomara R. Pires, José Salatiel Ecología del paisaje Manejo ambiental Orinoquia Plecturocebus ornatus Primates Environmental management Landscape ecology Orinoquia Plecturocebus ornatus Primates Ecología Primatología Plecturocebus ornatus is an endemic vulnerable species due to its population decline and its restricted range within the Eastern Plains of Colombia. This region is affected by deforestation as a result of legal and illegal economic activities. The aim of this work was to analyze the presence and abundance of P. ornatus during a period of urban and livestock production expansion (1986-2019) in Villavicencio, Colombia. This municipality is the most affected by land-use changes associated with regional economic development and represents 3.4 % of P. ornatus distribution’s area. The analysis was performed using satellite images Landsat 4 and 8, with V-Late in ArcGIS 10.5 to describe landscape structure, and P. ornatus occurrence records, obtained through field observations and the Global Biological Information Facility. Densities were calculated for each fragment based on total individuals observed by transect. A generalized lineal model was used to evaluate the effects of patch-scale, landscape-scale and other variables on P. ornatus abundance. By 1986 the rural and peri-urban areas of Villavicencio were already a transformed landscape. During the analyzed period, landscape was predominantly made up of disconnected linear fragments with a secondary humid forest cover. Around 82.1 % of the fragments with P. ornatus records are threatened by urbanization and only 50 % are in protected areas. Densities varied from 0.00 to 7.26 ind/ha (0.00–726.82 ind/km2). Abundance of P. ornatus was highly influenced by landscape-scale variables related with landscape connectivity, as well as fragment area and number of other primate species. Therefore, the implementation of restoration measures that increase landscape connectivity and habitat availability is proposed, as well as more control over environmental land-use planning, to contribute to the conservation of P. ornatus in urban areas. Plecturocebus ornatus es una especie endémica vulnerable debido a la disminución de su población y distribución restringida al piedemonte de los Llanos Orientales Colombianos. Esta región es afectada por la deforestación resultante de actividades económicas legales e ilegales. El objetivo de este trabajo fue analizar la presencia y abundancia de P. ornatus durante un período de expansión urbana y ganadera (1986-2019) en Villavicencio, Colombia. Este municipio es el más afectado por cambios de uso del suelo asociados al desarrollo económico regional y representa el 3,4 % del área de distribución de P. ornatus. El análisis se realizó a partir de imágenes satelitales Landsat 4 y 8, con V-Late de ArcGIS 10.5, para describir la estructura del paisaje, y registros de P. ornatus obtenidos en observaciones de campo y del Global Biological Information Facility. Se calcularon densidades de cada fragmento basadas en el número total de individuos observados. Un modelo lineal generalizado fue usado para evaluar el efecto de variables a la escala del parche, paisaje y otros sobre la abundancia de P. ornatus. Para 1986 los sectores rurales y periurbanos de Villavicencio ya eran un paisaje transformado. Durante el período analizado, el paisaje estuvo predominantemente conformado por fragmentos lineales desconectados con cobertura de bosque húmedo secundario. Alrededor del 82,1 % de los fragmentos con registros de P. ornatus están amenazados por la urbanización y solo el 50 % se encuentran en áreas protegidas. Las densidades variaron de 0,00 to 7,26 ind/ha (0,00–726,82 ind/km2). La abundancia de P. ornatus fue altamente influenciada por variables a la escala de paisaje relacionadas con la conectividad del paisaje, así como el área del fragmento y la presencia de otras especies de primates. Por lo tanto, la implementación de medidas de restauración que incrementen la conectividad del paisaje y disponibilidad de hábitat, así como un mayor control sobre el ordenamiento territorial ambiental, pueden contribuir a la conservación de P. ornatus en áreas urbanas. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología 2022-02-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unal.edu.co/index.php/actabiol/article/view/91023 10.15446/abc.v27n2.91023 Acta Biológica Colombiana; Vol. 27 No. 2 (2022); 269 - 281 Acta Biológica Colombiana; Vol. 27 Núm. 2 (2022); 269 - 281 1900-1649 0120-548X spa https://revistas.unal.edu.co/index.php/actabiol/article/view/91023/82837 https://creativecommons.org/licenses/by-nc-sa/4.0

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