Pub Date : 2022-12-08DOI: 10.22201/ib.20078706e.2022.93.4116
Juan José Palafox-Reyes, Daniel Vachard, Sébastien Clausen, B. Buitrón-Sánchez, Léa Devaere, I. V. García-Amaya
En el estado de Sonora afloran importantes secuencias del Paleozoico Superior con una abundante biota fósil relativamente bien preservada. El objetivo de este trabajo es estudiar los afloramientos localizados en el cerro El Yugo, ubicado en el municipio de Arivechi, noroeste de México, mediante bioestratigrafía de alta resolución basada en foraminíferos. La metodología consiste en la elaboración de secciones delegadas para microfacies así como estudio de óxidos mayores por medio de fluorescencia de rayos X (FRX), además de la extracción de conodontos mediante la disolución de caliza con ácido acético. El estudio documenta la biota presente en las rocas portadoras, lo cual permite realizar una correlación de microfacies, óxidos mayores y biota. Los resultados permiten identificar las biozonas de Nanicella gallowayi, Eogeinitzina devonica, Moravamminidae indet., Tikhinella measpis, Laxoendothyra parakosvensis y Stacheoides tenuis, lo cual permite datar la secuencia en un rango comprendido del Devónico Superior (Frasniano) al Misisípico Inferior-Medio (Tournaisiano-Viseano). El evento de extinción Kellwasser (LKW) del Devónico Superior es identificado en el presente estudio mediante la desaparición de T. measpis y E. devonica en el límite Frasniano-Famenniano. Posterior al Famenniano, la ausencia de biota fósil indica un período de recuperación de ésta.
{"title":"Bioestratigrafía del Devónico Superior y el Carbonífero Inferior: evento de extinción Kellwasser Inferior en Sonora central, México","authors":"Juan José Palafox-Reyes, Daniel Vachard, Sébastien Clausen, B. Buitrón-Sánchez, Léa Devaere, I. V. García-Amaya","doi":"10.22201/ib.20078706e.2022.93.4116","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4116","url":null,"abstract":"En el estado de Sonora afloran importantes secuencias del Paleozoico Superior con una abundante biota fósil relativamente bien preservada. El objetivo de este trabajo es estudiar los afloramientos localizados en el cerro El Yugo, ubicado en el municipio de Arivechi, noroeste de México, mediante bioestratigrafía de alta resolución basada en foraminíferos. La metodología consiste en la elaboración de secciones delegadas para microfacies así como estudio de óxidos mayores por medio de fluorescencia de rayos X (FRX), además de la extracción de conodontos mediante la disolución de caliza con ácido acético. El estudio documenta la biota presente en las rocas portadoras, lo cual permite realizar una correlación de microfacies, óxidos mayores y biota. Los resultados permiten identificar las biozonas de Nanicella gallowayi, Eogeinitzina devonica, Moravamminidae indet., Tikhinella measpis, Laxoendothyra parakosvensis y Stacheoides tenuis, lo cual permite datar la secuencia en un rango comprendido del Devónico Superior (Frasniano) al Misisípico Inferior-Medio (Tournaisiano-Viseano). El evento de extinción Kellwasser (LKW) del Devónico Superior es identificado en el presente estudio mediante la desaparición de T. measpis y E. devonica en el límite Frasniano-Famenniano. Posterior al Famenniano, la ausencia de biota fósil indica un período de recuperación de ésta.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42176150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-08DOI: 10.22201/ib.20078706e.2022.93.4180
M. Ojeda, R. Iglesias, J. G. Palacios-Vargas
Ptychoid mites from Mexico are diverse, represented by 60 species of 17 genera. Data includes 6 genera and 21 species of the family Steganacaridae. Currently 5 species of the genus Atropacarus (Hoplophorella) are recorded in the country. Herein we present redescriptions and new records of A. (H.) singularis from Quintana Roo and A. (H.) hamatus from Puebla and Guerrero. New records for the country are given and a brief discussion on distribution is presented. A key to all the known species of Atropacarus (Hoplophorella) in Mexico is given.
{"title":"Ptychoid mites Steganacaridae (Oribatida), redescriptions, new records and identification key to the Mexican species","authors":"M. Ojeda, R. Iglesias, J. G. Palacios-Vargas","doi":"10.22201/ib.20078706e.2022.93.4180","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4180","url":null,"abstract":"Ptychoid mites from Mexico are diverse, represented by 60 species of 17 genera. Data includes 6 genera and 21 species of the family Steganacaridae. Currently 5 species of the genus Atropacarus (Hoplophorella) are recorded in the country. Herein we present redescriptions and new records of A. (H.) singularis from Quintana Roo and A. (H.) hamatus from Puebla and Guerrero. New records for the country are given and a brief discussion on distribution is presented. A key to all the known species of Atropacarus (Hoplophorella) in Mexico is given. ","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43277930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-08DOI: 10.22201/ib.20078706e.2022.93.3966
B. López, E. Naranjo-García, Omar Mejía
This study used a biogeographic approach to identify panbiogeographic nodes and evaluate the spatial diversity patterns of the Mexican continental gastropods. A total of 86 individual nodes and one generalized node were identified for the continental gastropods. Most grid cells showed low diversity values, except for 3 cells with diversity values greater than 10%, which can be considered hotspots. On the other hand, despite the different environments, land and freshwater snails showed similar historical and spatial distribution patterns.
{"title":"Diversity patterns of Mexican land and freshwater snails: a spatiotemporal approach","authors":"B. López, E. Naranjo-García, Omar Mejía","doi":"10.22201/ib.20078706e.2022.93.3966","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.3966","url":null,"abstract":"This study used a biogeographic approach to identify panbiogeographic nodes and evaluate the spatial diversity patterns of the Mexican continental gastropods. A total of 86 individual nodes and one generalized node were identified for the continental gastropods. Most grid cells showed low diversity values, except for 3 cells with diversity values greater than 10%, which can be considered hotspots. On the other hand, despite the different environments, land and freshwater snails showed similar historical and spatial distribution patterns.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46590833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Se analizaron la abundancia relativa y la variabilidad morfológica de 4 especies y 1 variedad del género Aulacoseira (Bacillariophyceae) en sedimentos lacustres provenientes de lagos con diferentes características climáticas, morfométricas, fisicoquímicas y nivel trófico. Las afinidades ecológicas se investigaron a través del método de promedios ponderados y análisis de correspondencia canónica. Los resultados señalaron al gradiente de temperatura, salinidad y de nivel trófico como las principales variables que determinan la distribución de los taxones. Las especies del género tuvieron una distribución en aguas con pH circumneutrales levemente alcalinos y salinidades bajas. Aulacoseira granulata tuvo la mayor frecuencia de presencia y tolerancia por salinidades un poco más elevadas, A. ambigua alcanzó las abundancias relativas más altas, A. nivaloides se distingue por su afinidad a agua fría, de baja salinidad y bajo nivel trófico. Aulacoseira ambigua, A. granulata y A. granulata var. angustissima se distribuyen en ambientes de agua dulce, mesoeutróficos y A. pusilla tiene una afinidad por agua más turbia y con nivel más alto de fósforo. Este estudio aporta información sobre la variabilidad biológica y distribución ecológica de las especies dentro del género en lagos del centro de México.
{"title":"Variabilidad morfológica y distribución ecológica de especies del género Aulacoseira (Bacillariophyceae) en cuerpos de agua del centro de México","authors":"Maripili Ramírez-Nava, Margarita Caballero, Diana Avendaño","doi":"10.22201/ib.20078706e.2022.93.4197","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4197","url":null,"abstract":"Se analizaron la abundancia relativa y la variabilidad morfológica de 4 especies y 1 variedad del género Aulacoseira (Bacillariophyceae) en sedimentos lacustres provenientes de lagos con diferentes características climáticas, morfométricas, fisicoquímicas y nivel trófico. Las afinidades ecológicas se investigaron a través del método de promedios ponderados y análisis de correspondencia canónica. Los resultados señalaron al gradiente de temperatura, salinidad y de nivel trófico como las principales variables que determinan la distribución de los taxones. Las especies del género tuvieron una distribución en aguas con pH circumneutrales levemente alcalinos y salinidades bajas. Aulacoseira granulata tuvo la mayor frecuencia de presencia y tolerancia por salinidades un poco más elevadas, A. ambigua alcanzó las abundancias relativas más altas, A. nivaloides se distingue por su afinidad a agua fría, de baja salinidad y bajo nivel trófico. Aulacoseira ambigua, A. granulata y A. granulata var. angustissima se distribuyen en ambientes de agua dulce, mesoeutróficos y A. pusilla tiene una afinidad por agua más turbia y con nivel más alto de fósforo. Este estudio aporta información sobre la variabilidad biológica y distribución ecológica de las especies dentro del género en lagos del centro de México.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44390926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4078
Diego P. Viana, Letícia Larcher, Ângelo P. C. Rabelo, R. Hoogesteijn, F. Tortato, G. Porfirio
We conducted a comparative study of jaguar and puma activity patterns within a mosaic of protected areas (AMR) and on a cattle ranch (CR) in Pantanal, Brazil, to better understand their activity patterns in these landscapes. We hypothesized that the activity patterns of the jaguar and puma would be biased to the nocturnal period within the cattle ranch but not in the protected areas. We used data from camera traps analyzed through a non-parametric kernel density approach to explore interspecific and intraspecific temporal relationships between these species at both sites. We obtained 71 jaguar and 29 puma independent records at AMR, and 85 jaguar and 26 puma independent records at CR. Activity patterns of jaguars and pumas differed between sites, both being cathemeral in AMR, but nocturnal at CR with moderate to high overlaps, concordant with our hypothesis. Overall, our data suggest that the cattle ranching is not incompatible with the existence of jaguars and pumas but does shape their pattern of activities.
{"title":"Does cattle ranching drive activity patterns of jaguar (Panthera onca) and puma (Puma concolor) in the Brazilian Pantanal?","authors":"Diego P. Viana, Letícia Larcher, Ângelo P. C. Rabelo, R. Hoogesteijn, F. Tortato, G. Porfirio","doi":"10.22201/ib.20078706e.2022.93.4078","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4078","url":null,"abstract":"We conducted a comparative study of jaguar and puma activity patterns within a mosaic of protected areas (AMR) and on a cattle ranch (CR) in Pantanal, Brazil, to better understand their activity patterns in these landscapes. We hypothesized that the activity patterns of the jaguar and puma would be biased to the nocturnal period within the cattle ranch but not in the protected areas. We used data from camera traps analyzed through a non-parametric kernel density approach to explore interspecific and intraspecific temporal relationships between these species at both sites. We obtained 71 jaguar and 29 puma independent records at AMR, and 85 jaguar and 26 puma independent records at CR. Activity patterns of jaguars and pumas differed between sites, both being cathemeral in AMR, but nocturnal at CR with moderate to high overlaps, concordant with our hypothesis. Overall, our data suggest that the cattle ranching is not incompatible with the existence of jaguars and pumas but does shape their pattern of activities.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68149448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4168
M. Caballero, Itzel Sigala, J. Moreno, Mireya Vega-Flores, L. Oseguera, A. Ruiz-Fernández, J. Alcocer
Testate amoebae are bioindicators sensitive to environmental change, which show good preservation in sediments of low pH environments, such as high mountain lakes (LAM). The presence and diversity of testate amoebae were documented in surface sediments and sediment cores, dated with 210Pb, from the only 2 LAMs in Mexico (El Sol and La Luna), which have shown signs of recent human-induced changes. A total of 18 taxa were recorded and the main species observed in both lakes were Difflugia glans “glans” and D. globulosa. Specific richness and Shannon’s diversity index were higher in Lake El Sol than in the smaller, acidic and ultraoligotrophic Lake La Luna. The sediment cores recorded changes, during the last 20 to 25 years, in the composition of the testate amoebae communities (El Sol) and in their dominance (La Luna), as well as increased accumulation rate and concentrations of iron and organic carbon. These are signs of anthropogenic impact on the lakes, which should alert us to improve protection measures for these unique ecosystems, not only at the local (crater) level, but also with a more regional perspective.
{"title":"Testate amoebae assemblages from two tropical high-mountain lakes in central Mexico during the last ~60 years","authors":"M. Caballero, Itzel Sigala, J. Moreno, Mireya Vega-Flores, L. Oseguera, A. Ruiz-Fernández, J. Alcocer","doi":"10.22201/ib.20078706e.2022.93.4168","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4168","url":null,"abstract":"Testate amoebae are bioindicators sensitive to environmental change, which show good preservation in sediments of low pH environments, such as high mountain lakes (LAM). The presence and diversity of testate amoebae were documented in surface sediments and sediment cores, dated with 210Pb, from the only 2 LAMs in Mexico (El Sol and La Luna), which have shown signs of recent human-induced changes. A total of 18 taxa were recorded and the main species observed in both lakes were Difflugia glans “glans” and D. globulosa. Specific richness and Shannon’s diversity index were higher in Lake El Sol than in the smaller, acidic and ultraoligotrophic Lake La Luna. The sediment cores recorded changes, during the last 20 to 25 years, in the composition of the testate amoebae communities (El Sol) and in their dominance (La Luna), as well as increased accumulation rate and concentrations of iron and organic carbon. These are signs of anthropogenic impact on the lakes, which should alert us to improve protection measures for these unique ecosystems, not only at the local (crater) level, but also with a more regional perspective.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46397965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4166
Santiago Jaume-Schinkel, X. Mengual
In the present study we discuss the distribution of the exotic species Chrysomya megacephala (Fabricius, 1794) in Mexico, combining data from natural history collections, social media and citizen science. The oriental latrine blow fly is recorded for the first time in 16 Mexican states. Additionally, we provide an easy-to-follow guide to compare this species with similar looking species recorded from Mexico to help with its identification.
{"title":"New geographic distribution of Chrysomya megacephala, the Oriental latrine blow fly (Diptera: Calliphoridae), in Mexico using citizen science and social media","authors":"Santiago Jaume-Schinkel, X. Mengual","doi":"10.22201/ib.20078706e.2022.93.4166","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4166","url":null,"abstract":"In the present study we discuss the distribution of the exotic species Chrysomya megacephala (Fabricius, 1794) in Mexico, combining data from natural history collections, social media and citizen science. The oriental latrine blow fly is recorded for the first time in 16 Mexican states. Additionally, we provide an easy-to-follow guide to compare this species with similar looking species recorded from Mexico to help with its identification.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41639631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4132
T. Garrido-Garduño, E. Vázquez‐Domínguez, Patricia D. Dávila-Aranda, R. Lira-Saade, Maribel Arenas-Navarro, O. Téllez-Valdés
We apply an environmental domains approach to identify environmentally heterogeneous characteristics defining a landscape matrix. We built environmental layers for national, regional, and local scales, considering the different scales studies can have. We used a numerical classification of explicit spatial layers and performed a multivariate classification. Based on the domains obtained, we mapped the landscape’s climatic heterogeneity and identified a comprehensive set of environmental variables that defined the landscape matrix at each scale. We specifically tested our approach for its suitability to define a sampling strategy for a landscape genetics study, using as focal species the rodent Heteromys pictus. Namely, from the domains obtained at the local scale, we selected sampling localities that comprised the broadest habitat heterogeneity, which we corroborated in the field. The landscape matrix thus generated was used with genetic data previously obtained for H. pictus. Our approach allowed identification of environmental variables significantly associated with dispersal (gene flow) of H. pictus individuals in their natural habitat. We demonstrate its adequacy to efficiently determine sampling localities —or landscape sites— that encompass the highest environmental heterogeneity, in explored and unexplored landscapes, enabling rapid identification of localities and their environmental characteristics where in situ information is scarce.
{"title":"Defining environmentally heterogeneous sites when faced with conservation urgency and scarce in situ data","authors":"T. Garrido-Garduño, E. Vázquez‐Domínguez, Patricia D. Dávila-Aranda, R. Lira-Saade, Maribel Arenas-Navarro, O. Téllez-Valdés","doi":"10.22201/ib.20078706e.2022.93.4132","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4132","url":null,"abstract":"We apply an environmental domains approach to identify environmentally heterogeneous characteristics defining a landscape matrix. We built environmental layers for national, regional, and local scales, considering the different scales studies can have. We used a numerical classification of explicit spatial layers and performed a multivariate classification. Based on the domains obtained, we mapped the landscape’s climatic heterogeneity and identified a comprehensive set of environmental variables that defined the landscape matrix at each scale. We specifically tested our approach for its suitability to define a sampling strategy for a landscape genetics study, using as focal species the rodent Heteromys pictus. Namely, from the domains obtained at the local scale, we selected sampling localities that comprised the broadest habitat heterogeneity, which we corroborated in the field. The landscape matrix thus generated was used with genetic data previously obtained for H. pictus. Our approach allowed identification of environmental variables significantly associated with dispersal (gene flow) of H. pictus individuals in their natural habitat. We demonstrate its adequacy to efficiently determine sampling localities —or landscape sites— that encompass the highest environmental heterogeneity, in explored and unexplored landscapes, enabling rapid identification of localities and their environmental characteristics where in situ information is scarce.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48548833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4153
Rosario Ramírez-Santiago, Ricardo Clark-Tapia, María del Pilar Fernández-Lomelín, O. Oropeza-orozco, Slike Cram-Heydriche
La influencia de los elementos de la geodiversidad sobre la vegetación ha sido poco analizada en la región Mixteca Alta. Por ello, el objetivo del presente estudio fue determinar los elementos de geodiversidad que influyen en las características de la vegetación leñosa a escala paisajística en el Geoparque Mundial de la UNESCO Mixteca Alta. Se utilizaron 70 sitios de muestreo de 500 m2 distribuidos en 3 diferentes tipos de vegetación (encinar, pino-encino y matorral xérico). En cada sitio se inventariaron todos los árboles y arbustos > 1 m de altura. Se registraron 92 especies leñosas, incluidos 62 arbustos, 28 árboles y 1 especie de palmera del género Brahea. Los resultados indican que existe una estrecha asociación entre tipos de vegetación y especies con varios elementos de geodiversidad, principalmente temperatura, precipitación, altitud y factores de perturbación antrópica. Por otro lado, la composición florística está dominada por especies generalistas (70%), lo que sugiere una etapa sucesional secundaria y un ambiente antropizado. El conocimiento de los elementos de la geodiversidad que influyen en la vegetación leñosa en el geoparque y sus especies asociadas es adecuado para su uso en el diseño e implementación de proyectos de conservación y restauración.
{"title":"Principales elementos de la geodiversidad que influyen en la vegetación leñosa del Geoparque Mundial UNESCO Mixteca Alta, Oaxaca","authors":"Rosario Ramírez-Santiago, Ricardo Clark-Tapia, María del Pilar Fernández-Lomelín, O. Oropeza-orozco, Slike Cram-Heydriche","doi":"10.22201/ib.20078706e.2022.93.4153","DOIUrl":"https://doi.org/10.22201/ib.20078706e.2022.93.4153","url":null,"abstract":"La influencia de los elementos de la geodiversidad sobre la vegetación ha sido poco analizada en la región Mixteca Alta. Por ello, el objetivo del presente estudio fue determinar los elementos de geodiversidad que influyen en las características de la vegetación leñosa a escala paisajística en el Geoparque Mundial de la UNESCO Mixteca Alta. Se utilizaron 70 sitios de muestreo de 500 m2 distribuidos en 3 diferentes tipos de vegetación (encinar, pino-encino y matorral xérico). En cada sitio se inventariaron todos los árboles y arbustos > 1 m de altura. Se registraron 92 especies leñosas, incluidos 62 arbustos, 28 árboles y 1 especie de palmera del género Brahea. Los resultados indican que existe una estrecha asociación entre tipos de vegetación y especies con varios elementos de geodiversidad, principalmente temperatura, precipitación, altitud y factores de perturbación antrópica. Por otro lado, la composición florística está dominada por especies generalistas (70%), lo que sugiere una etapa sucesional secundaria y un ambiente antropizado. El conocimiento de los elementos de la geodiversidad que influyen en la vegetación leñosa en el geoparque y sus especies asociadas es adecuado para su uso en el diseño e implementación de proyectos de conservación y restauración.","PeriodicalId":49603,"journal":{"name":"Revista Mexicana de Biodiversidad","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41748840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-07DOI: 10.22201/ib.20078706e.2022.93.4080
Héctor Cadena-Ortiz, M. Quiroga, Elisa Bonaccorso
Myiasis by Philornis is a usual phenomenon in Neotropical birds. Philornis larvae are hematophagous and are known to affect both nestlings and adults. Still, parasitism in adults seems opportunistic and has been poorly studied compared to parasitism in nestlings. Here, we inspected 1,429 adult and juvenile birds of 41 species from an Andean dry forest in northern Ecuador, searching for infestations by Philornis larvae. For the first time, we report parasitism by Philornis in adult birds of 6 species of passerine birds (Troglodytes aedon, Conirostrum cinereum, Geospizopsis plebejus, Zonotrichia capensis, Pheucticus chrysogaster, and Spinus magellanicus). We also report the first cases of infestation by the Philornis torquans complex in Ecuador and provide data on the prevalence of Philornis myiasis in this Andean dry forest. We extend both the host range and the geographic distribution of the P. torquans complex.
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