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      Analysis and trends of photo-trapping in Mexico: text mining in R

      research-article
      Therya
      Asociación Mexicana de Mastozoología A. C.
      birds, camera-traps, journals, mammals, R, text mining, topic trend

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          Abstract

          Abstract: This paper gathers published studies that used photo-trapping as the primary or supplementary method to obtain data on mammal and bird species in Mexico. The aim is to determine temporal trends, scientific journals, species, research groups, regions, and key topics investigated using this technology. A secondary objective of this paper was to illustrate the usefulness of text mining tools to analyze and summarize relatively large amounts of information. Papers about photo-trapping in Mexico published in specialized journals and books from 1998 to 2017 were compiled from Google Scholar and processed with various packages in R. A total of 188 papers about photo-trapping in Mexico were compiled, with 88.2 % published in 50 journals over the past seven years. The main journals were Therya, Revista Mexicana de Biodiversidad, Acta Zoologica Mexicana (New Series) and Revista de Biología Tropical. The articles identified were written by 406 co-authors, 28 of whom contributed with 32.4 % of the papers published. A total of 40 species were reported in the title and abstract of these papers; the most frequent species were Panthera onca, Leopardus pardalis, Puma concolor, Tapirus bairdii, Tayassu pecari, Odocoileus virginianus, and Cuniculus paca. Oaxaca, Campeche, Sonora, Chiapas, Guanajuato, and Puebla were the main states where studies were conducted; in particular, most of them were carried out within Biosphere Reserves. Major research topics comprised records that broaden the distribution range, estimates of relative abundance and density, analysis of activity patterns, ecological interactions between species, and use of photo-trapping data as supplementary information to elaborate inventories of species. The analysis of text mining clearly indicates a trend towards an increasing use of photo-trapping in Mexico. Felines, ungulates and various species of the order Carnivora are main subjects of study. Photo-trapping has been used to explore a number of aspects of the biology of animal species. A large number of studies have been carried out in southeastern Mexico. The use of text mining techniques is a practical approach to analyze large volumes of data.

          Translated abstract

          Resumen: El objetivo del presente trabajo fue recopilar los estudios publicados donde se emplea el foto-trampeo como método principal o complementario para la obtención de datos de mamíferos y aves de talla mediana y grande en México, con la finalidad de conocer la tendencia temporal, revistas donde se publicó, especies, grupos de investigación, regiones y temas principales abordados con esta tecnología. Adicionalmente, como segundo propósito en este trabajo se ejemplifica la utilidad de las herramientas de minería de textos para analizar y sintetizar cantidades relativamente grandes de información. Se recopilaron libros, capítulos y artículos científicos publicados sobre foto-trampeo en México entre 1998 a 2017 en el Google Académico, y se procesaron a través de minería de textos con diferentes paquetes en R. Se encontraron 188 artículos sobre foto-trampeo en México de los cuales el 88.2 % fue publicado en los últimos siete años. Los artículos fueron publicados en 50 revistas; destacan Therya, Revista Mexicana de Biodiversidad y Acta Zoológica Mexicana (nueva serie) y Revista de Biología Tropical. Los artículos fueron escritos por 406 coautores, de los cuales 28 han contribuido con el 32.4 % de los trabajos publicados. Un total de 40 especies se reporta en el título y resumen de los documentos; de las cuales las más estudiadas fueron: Panthera onca, Leopardus pardalis, Puma concolor, Tapirus bairdii, Tayassu pecari, Odocoileus virginianus y Cuniculus paca. Oaxaca, Campeche, Sonora, Chiapas, Guanajuato y Puebla fueron los principales estados estudiados. En particular, destacan Reservas de la Biosfera. Los principales temas de investigación tratan sobre registros notables que amplían el rango de distribución geográfica de varias especies, diversidad, estimaciones de abundancia relativa y de la densidad de población utilizando captura-recaptura, análisis de patrones de actividad entre especies, e interacciones ecológicas. El análisis de minería de texto indica claramente que el foto-trampeo es un método en crecimiento en México. Los felinos, ungulados y varias especies del orden Carnívora, son los más frecuentemente estudiados. El foto-trampeo se ha empleado para conocer variados aspectos de la biología de las especies animales. La región del Sureste del país es donde se ha realizado un mayor número de estudios. El empleo de técnicas de minería de texto es una alternativa práctica para analizar volúmenes grandes de datos.

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          Most cited references32

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          Effectiveness of parks in protecting tropical biodiversity.

          We assessed the impacts of anthropogenic threats on 93 protected areas in 22 tropical countries to test the hypothesis that parks are an effective means to protect tropical biodiversity. We found that the majority of parks are successful at stopping land clearing, and to a lesser degree effective at mitigating logging, hunting, fire, and grazing. Park effectiveness correlates with basic management activities such as enforcement, boundary demarcation, and direct compensation to local communities, suggesting that even modest increases in funding would directly increase the ability of parks to protect tropical biodiversity.
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            Community structure and diversity of tropical forest mammals: data from a global camera trap network.

            Terrestrial mammals are a key component of tropical forest communities as indicators of ecosystem health and providers of important ecosystem services. However, there is little quantitative information about how they change with local, regional and global threats. In this paper, the first standardized pantropical forest terrestrial mammal community study, we examine several aspects of terrestrial mammal species and community diversity (species richness, species diversity, evenness, dominance, functional diversity and community structure) at seven sites around the globe using a single standardized camera trapping methodology approach. The sites-located in Uganda, Tanzania, Indonesia, Lao PDR, Suriname, Brazil and Costa Rica-are surrounded by different landscape configurations, from continuous forests to highly fragmented forests. We obtained more than 51 000 images and detected 105 species of mammals with a total sampling effort of 12 687 camera trap days. We find that mammal communities from highly fragmented sites have lower species richness, species diversity, functional diversity and higher dominance when compared with sites in partially fragmented and continuous forest. We emphasize the importance of standardized camera trapping approaches for obtaining baselines for monitoring forest mammal communities so as to adequately understand the effect of global, regional and local threats and appropriately inform conservation actions.
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              Risky business or simple solution – Relative abundance indices from camera-trapping

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                Author and article information

                Contributors
                Role: ND
                Journal
                therya
                Therya
                Therya
                Asociación Mexicana de Mastozoología A. C. (La Paz, Baja California Sur, Mexico )
                2007-3364
                2019
                : 10
                : 1
                : 25-32
                Affiliations
                [1] Xalapa Veracruz orgnameInstituto de Ecología Mexico salvador.mandujano@ 123456inecol.mx
                Article
                S2007-33642019000100025
                10.12933/therya-19-666
                3292908e-3a5e-4bb4-bf85-b62f5b79fa2d

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 24 August 2018
                : 19 December 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 52, Pages: 8
                Product

                SciELO Mexico

                Categories
                Articles

                camera-traps,birds,journals,mammals,R,text mining,topic trend
                camera-traps, birds, journals, mammals, R, text mining, topic trend

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