dor_id: 4129039

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590.#.#.d: Cada artículo es evaluado mediante una revisión ciega única. Los revisores son externos nacionales e internacionales.

510.0.#.a: Web of Science (WoS), Directory of Open Access Journals (DOAJ), Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex), Scientific Electronic Library Online (SciELO), Consejo Nacional de Ciencia y Tecnología (CONACyT), La Red de Revistas Científicas de América Latina y el Caribe, España y Portugal (Redalyc)

561.#.#.u: http://www.ib.unam.mx/

650.#.4.x: Biología y Química

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://www.revista.ib.unam.mx/index.php/bio/index

351.#.#.b: Revista Mexicana de Biodiversidad

351.#.#.a: Artículos

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

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883.#.#.u: http://www.revistas.unam.mx/front/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural, UNAM

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883.#.#.q: Dirección General de Publicaciones y Fomento Editorial, UNAM

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://www.revista.ib.unam.mx/index.php/bio/article/view/3313/2158

100.1.#.a: González Oreja, José Antonio; Zuberogoitia, Iñigo

524.#.#.a: González Oreja, José Antonio, et al. (2020). Summarizing abundance changes in waterbirds: some problems and a possible solution. Revista Mexicana de Biodiversidad; Vol. 91, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4129039

245.1.0.a: Summarizing abundance changes in waterbirds: some problems and a possible solution

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Biología, UNAM

264.#.0.c: 2020

264.#.1.c: 2020-12-10

653.#.#.a: Wetlands; migratory birds; number of individuals; peak abundance; cumulative total; ecology; conservation

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2020-12-10, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico falvarez@ib.unam.mx

884.#.#.k: http://www.revista.ib.unam.mx/index.php/bio/article/view/3313

001.#.#.#: rmbio.oai:ojs.pkp.sfu.ca:article/3313

041.#.7.h: eng

520.3.#.a: After conducting replicated counts of migratory waterbirds at a given wetland, some authors choose to compute the mean abundance throughout the study period, whereas others report the peak value or the cumulative total. Here, we use fictitious and real examples to illustrate how some of these procedures can lead to distorted conclusions. For species with skewed abundance distributions, the mean does not summarize the central tendency in the data, and themedian should be used; however, for many migratory waterbirds, median abundances at a given site can be null. Also, the probability of double-counting the same individuals increases when replicated surveys cover a long time. Moreover, since the cumulative abundance of a species/assemblage increases with the number of surveys, misleading results can be obtained if researchers apply different sampling efforts. Finally, the ranking and selection of wetlands for waterbird conservation can be misguided if cumulative totals are compared against standard criteria (i.e., Ramsar sites, IBAs). To avoid the above mentioned problems, we propose to use the maximum, peak abundance of a given waterbird species during the course of the study, or the sum of maxima, peak values across all the species in the samewaterbird assemblage.

773.1.#.t: Revista Mexicana de Biodiversidad; Vol. 91 (2020)

773.1.#.o: http://www.revista.ib.unam.mx/index.php/bio/index

022.#.#.a: ISSN electrónico: 2007-8706; ISSN impreso: 1870-3453

310.#.#.a: Trimestral

300.#.#.a: Páginas: e913313

264.#.1.b: Instituto de Biología, UNAM

758.#.#.1: http://www.revista.ib.unam.mx/index.php/bio/index

doi: https://doi.org/10.22201/ib.20078706e.2020.91.3313

handle: 0f8f3b721ba35b0d

harvesting_date: 2022-08-17 16:00:00.0

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Artículo

Summarizing abundance changes in waterbirds: some problems and a possible solution

González Oreja, José Antonio; Zuberogoitia, Iñigo

Instituto de Biología, UNAM, publicado en Revista Mexicana de Biodiversidad, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

González Oreja, José Antonio, et al. (2020). Summarizing abundance changes in waterbirds: some problems and a possible solution. Revista Mexicana de Biodiversidad; Vol. 91, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4129039

Descripción del recurso

Autor(es)
González Oreja, José Antonio; Zuberogoitia, Iñigo
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Summarizing abundance changes in waterbirds: some problems and a possible solution
Fecha
2020-12-10
Resumen
After conducting replicated counts of migratory waterbirds at a given wetland, some authors choose to compute the mean abundance throughout the study period, whereas others report the peak value or the cumulative total. Here, we use fictitious and real examples to illustrate how some of these procedures can lead to distorted conclusions. For species with skewed abundance distributions, the mean does not summarize the central tendency in the data, and themedian should be used; however, for many migratory waterbirds, median abundances at a given site can be null. Also, the probability of double-counting the same individuals increases when replicated surveys cover a long time. Moreover, since the cumulative abundance of a species/assemblage increases with the number of surveys, misleading results can be obtained if researchers apply different sampling efforts. Finally, the ranking and selection of wetlands for waterbird conservation can be misguided if cumulative totals are compared against standard criteria (i.e., Ramsar sites, IBAs). To avoid the above mentioned problems, we propose to use the maximum, peak abundance of a given waterbird species during the course of the study, or the sum of maxima, peak values across all the species in the samewaterbird assemblage.
Tema
Wetlands; migratory birds; number of individuals; peak abundance; cumulative total; ecology; conservation
Idioma
eng
ISSN
ISSN electrónico: 2007-8706; ISSN impreso: 1870-3453

Enlaces