2017 |
Díaz-Álvarez, E A; de la Barrera, E PREPRINT: Mapping pollution in a megalopolis: the case for atmospheric biomonitors of nitrogen deposition Journal Article BioRxiv, doi: 10.1101/118257 , 2017, (This article is a preprint and has not been peer reviewed. ). Abstract | Links | BibTeX | Tags: biomonitoring, ecophysiology, global change, lichen, megacities, mosses, nitrogen, Tillandsia, urban ecology @article{Díaz-Álvarez2017b, title = {PREPRINT: Mapping pollution in a megalopolis: the case for atmospheric biomonitors of nitrogen deposition}, author = {E. A. Díaz-Álvarez and E. de la Barrera }, url = {https://doi.org/10.1101/118257 }, doi = {10.1101/118257}, year = {2017}, date = {2017-03-19}, journal = {BioRxiv}, volume = {doi: 10.1101/118257}, abstract = {An increase of nitrogen deposition resulting from human activities is not only a major threat for global biodiversity, but also for human health, especially in highly populated regions. It is thus important and in some instances legally mandated to monitor reactive nitrogen species in the atmosphere. However, deployment of automated networks can be excessively costly for most cities so the utilization of widely distributed biological species suitable for biomonitoring may be a good alternative. The aim of this work was thus to assess the suitability of different atmospheric organisms as biomonitors of nitrogen deposition, by means of an extensive sampling of a lichen, two mosses, and one bromeliad throughout the Valley of Mexico, the basin where the megalopolis of Mexico City (population 20 million) is located, and subsequent measurements of nitrogen metabolism parameters. In all cases significant responses of nitrogen content, C:N ratio and 15N were found for the lichen Anaptychia sp. the mosses Grimmia sp. and Fabronia sp., and the bromeliad Tillandsia recurvata in response to season and collected site. In turn, 15N for the mosses responded linearly to the wet deposition (R2= 0.7 for Grimmia sp. and R2=0.2 for Fabronia sp.). Also, the nitrogen content (R2=0.7), the C:N ratio (R2=0.6), and 15N (R2=0.5) for the bromeliad had a linear response to NOx. However, latter species was not found in sites with NOx concentrations above 212 ppm. These biomonitors can be utilized in tandem to determine the status of nitrogenous pollution in regions without monitoring networks.}, note = {This article is a preprint and has not been peer reviewed. }, keywords = {biomonitoring, ecophysiology, global change, lichen, megacities, mosses, nitrogen, Tillandsia, urban ecology}, pubstate = {published}, tppubtype = {article} } An increase of nitrogen deposition resulting from human activities is not only a major threat for global biodiversity, but also for human health, especially in highly populated regions. It is thus important and in some instances legally mandated to monitor reactive nitrogen species in the atmosphere. However, deployment of automated networks can be excessively costly for most cities so the utilization of widely distributed biological species suitable for biomonitoring may be a good alternative. The aim of this work was thus to assess the suitability of different atmospheric organisms as biomonitors of nitrogen deposition, by means of an extensive sampling of a lichen, two mosses, and one bromeliad throughout the Valley of Mexico, the basin where the megalopolis of Mexico City (population 20 million) is located, and subsequent measurements of nitrogen metabolism parameters. In all cases significant responses of nitrogen content, C:N ratio and 15N were found for the lichen Anaptychia sp. the mosses Grimmia sp. and Fabronia sp., and the bromeliad Tillandsia recurvata in response to season and collected site. In turn, 15N for the mosses responded linearly to the wet deposition (R2= 0.7 for Grimmia sp. and R2=0.2 for Fabronia sp.). Also, the nitrogen content (R2=0.7), the C:N ratio (R2=0.6), and 15N (R2=0.5) for the bromeliad had a linear response to NOx. However, latter species was not found in sites with NOx concentrations above 212 ppm. These biomonitors can be utilized in tandem to determine the status of nitrogenous pollution in regions without monitoring networks. |
2016 |
Díaz-Álvarez, E A ¿Qué tanto es tantito? Una breve historia del nitrógeno en la era industrial Online Morelia, UNAM Campus (Ed.): 2016. Links | BibTeX | Tags: ecophysiology, nitrogen, pollution, urban ecology @online{Díaz-Álvarez2016, title = {¿Qué tanto es tantito? Una breve historia del nitrógeno en la era industrial}, author = {E. A. Díaz-Álvarez}, editor = {UNAM Campus Morelia}, url = {http://agro.mx/wp-content/uploads/2017/08/diazalvarez-2016-BUM.pdf}, year = {2016}, date = {2016-12-31}, journal = {Boletín UNAM Morelia (BUM)}, volume = {64}, keywords = {ecophysiology, nitrogen, pollution, urban ecology}, pubstate = {published}, tppubtype = {online} } |
Díaz-Álvarez, E A; Reyes-García, C; de la Barrera, E A δ15N assessment of nitrogen deposition for the endangered epiphytic orchid Laelia speciosa from a city and an oak forest in Mexico Journal Article Journal of Plant Research, 129 , pp. 863–872, 2016. Abstract | Links | BibTeX | Tags: conservation physiology, global change, moss, Neo-volcanic axis, nitrogen, orchid, pollution, stable isotopes, urban ecology @article{Díaz-Álvarez2016b, title = {A δ15N assessment of nitrogen deposition for the endangered epiphytic orchid Laelia speciosa from a city and an oak forest in Mexico}, author = {E. A. Díaz-Álvarez and C. Reyes-García and E. de la Barrera }, url = {http://rdcu.be/npd1 http://agro.mx/wp-content/uploads/2016/06/039-Diaz-Alvarez-laelia-rv3.pdf http://link.springer.com/article/10.1007/s10265-016-0843-y}, doi = {10.1007/s10265-016-0843-y}, year = {2016}, date = {2016-06-09}, journal = {Journal of Plant Research}, volume = {129}, pages = {863–872}, abstract = {Atmospheric nitrogen deposition poses a major threat to global biodiversity. Tropical epiphytic plants are especially at risk given their reliance on atmospheric sources of nutrients. The leaf, pseudobulb, and root carbon and nitrogen content, C:N ratio, as well as the nitrogen isotopic composition were studied for individuals of Laelia speciosa from a city and from an oak forest in Mexico. The nitrogen content of leaves was similar between the city and the oak forest, reaching 1.3 ± 0.2 % (dry mass). The δ15N of leaves, pseudobulbs, and roots reached 5.6 ± 0.2 ‰ in the city, values found in sites exposed to industrial and vehicular activities. The δ15N for plant from the oak forest amounted to –3.1 ± 0.3 ‰, which is similar to values measured from sites with low industrial activities. Some orchids such as Laelia speciosa produce a single pseudobulb per year, i.e., a water and nutrient storage organ, so the interannual nitrogen deposition was studied by considering the ten most recent pseudobulbs for plants from either site formed between 2003 and 2012. The C:N ratio of the ten most recent pseudobulbs from the oak forest, as well as that of the pseudobulbs formed before 2010 for plants in the city were indistinguishable from each other, averaging 132.4 ± 6.5, while it was lower for the two most recent pseudobulbs in the city. The δ15N values of pseudobulbs from the oak forest averaged ‒4.4 ± 0.1 ‰ for the entire series. The δ15N ranged from 0.1 ± 1.6 ‰ for the oldest pseudobulb to 4.7 ± 0.2 ‰ for the pseudobulb formed in the city from 2008 onwards. Isotopic analysis and the C:N ratio for L. speciosa revealed that rates of nitrogen deposition were higher in the city than in the forest. The δ15N values of series of pseudobulbs showed that it is possible to track nitrogen deposition over multiple years.}, keywords = {conservation physiology, global change, moss, Neo-volcanic axis, nitrogen, orchid, pollution, stable isotopes, urban ecology}, pubstate = {published}, tppubtype = {article} } Atmospheric nitrogen deposition poses a major threat to global biodiversity. Tropical epiphytic plants are especially at risk given their reliance on atmospheric sources of nutrients. The leaf, pseudobulb, and root carbon and nitrogen content, C:N ratio, as well as the nitrogen isotopic composition were studied for individuals of Laelia speciosa from a city and from an oak forest in Mexico. The nitrogen content of leaves was similar between the city and the oak forest, reaching 1.3 ± 0.2 % (dry mass). The δ15N of leaves, pseudobulbs, and roots reached 5.6 ± 0.2 ‰ in the city, values found in sites exposed to industrial and vehicular activities. The δ15N for plant from the oak forest amounted to –3.1 ± 0.3 ‰, which is similar to values measured from sites with low industrial activities. Some orchids such as Laelia speciosa produce a single pseudobulb per year, i.e., a water and nutrient storage organ, so the interannual nitrogen deposition was studied by considering the ten most recent pseudobulbs for plants from either site formed between 2003 and 2012. The C:N ratio of the ten most recent pseudobulbs from the oak forest, as well as that of the pseudobulbs formed before 2010 for plants in the city were indistinguishable from each other, averaging 132.4 ± 6.5, while it was lower for the two most recent pseudobulbs in the city. The δ15N values of pseudobulbs from the oak forest averaged ‒4.4 ± 0.1 ‰ for the entire series. The δ15N ranged from 0.1 ± 1.6 ‰ for the oldest pseudobulb to 4.7 ± 0.2 ‰ for the pseudobulb formed in the city from 2008 onwards. Isotopic analysis and the C:N ratio for L. speciosa revealed that rates of nitrogen deposition were higher in the city than in the forest. The δ15N values of series of pseudobulbs showed that it is possible to track nitrogen deposition over multiple years. |
2015 |
Montejo-Mayo, W; del-Val, E; Gómez-Romero, M; de la Barrera, E; Lindig-Cisneros, R Interactions between dominant hydrophytic species of the wetlands of western Mexico mediated by fire and nitrite concentration Journal Article Polibotánica, 40 , pp. 53-161, 2015. Links | BibTeX | Tags: fire, nitrogen, Typha, wetland @article{Montejo-Mayo2015, title = {Interactions between dominant hydrophytic species of the wetlands of western Mexico mediated by fire and nitrite concentration}, author = {W. Montejo-Mayo and E. del-Val and M. Gómez-Romero and E. de la Barrera and R. Lindig-Cisneros}, url = {http://agro.mx/wp-content/uploads/2015/10/MontejoetalPolibotanica.pdf http://www.polibotanica.mx/esp/num40/tema10esp.htm }, year = {2015}, date = {2015-09-29}, journal = {Polibotánica}, volume = {40}, pages = {53-161}, keywords = {fire, nitrogen, Typha, wetland}, pubstate = {published}, tppubtype = {article} } |
Báez-Pérez, A L; Gómez-Romero, M; Villegas, J; de la Barrera, E; Carreto-Montoya, L; Lindig-Cisneros, R Inoculación con hongos micorrízicos y fertilización con urea de plantas de Fraxinus uhdei en acrisoles provenientes de sitios degradados Journal Article Botanical Sciences, 93 (3), pp. 501-508, 2015. Links | BibTeX | Tags: erosion, Fraxinus, micorrhizae, nitrogen, Pisolitus, restoration, Rhizophagus @article{Báez-Pérez2015, title = {Inoculación con hongos micorrízicos y fertilización con urea de plantas de Fraxinus uhdei en acrisoles provenientes de sitios degradados}, author = {A. L. Báez-Pérez and M. Gómez-Romero and J. Villegas and E. de la Barrera and L. Carreto-Montoya and R. Lindig-Cisneros}, url = {http://agro.mx/wp-content/uploads/2015/09/032-Baez-Pérez-2015-BotSci-micorrizas.pdf http://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/207/pdf_138 }, doi = {10.17129/botsci.207}, year = {2015}, date = {2015-09-15}, journal = {Botanical Sciences}, volume = {93}, number = {3}, pages = {501-508}, keywords = {erosion, Fraxinus, micorrhizae, nitrogen, Pisolitus, restoration, Rhizophagus}, pubstate = {published}, tppubtype = {article} } |
Díaz-Álvarez, E A; Lindig-Cisneros, R; de la Barrera, E Responses to simulated nitrogen deposition by the neotropical epiphytic orchid Laelia speciosa Journal Article PeerJ, 3 , pp. e1021, 2015. Abstract | Links | BibTeX | Tags: acid rain, biodiversity, CAM, conservation physiology, d15N, global change, Laelia, neotropical, nitrogen, orchid, plant nutrition, pollution, stable isotopes @article{Díaz-Álvarez2015, title = {Responses to simulated nitrogen deposition by the neotropical epiphytic orchid Laelia speciosa}, author = {E. A. Díaz-Álvarez and R. Lindig-Cisneros and E. de la Barrera}, url = {https://peerj.com/articles/1021/ http://agro.mx/wp-content/uploads/2015/06/031-Díaz-Alvarez-et-al-2015-PeerJ-Laelia.pdf}, doi = {10.7717/peerj.1021}, year = {2015}, date = {2015-06-18}, journal = {PeerJ}, volume = {3}, pages = {e1021}, abstract = {Potential ecophysiological responses to nitrogen deposition, which is considered to be one of the leading causes for global biodiversity loss, were studied for the endangered endemic Mexican epiphytic orchid, Laelia speciosa, via a shadehouse dose-response experiment (doses were 2.5, 5, 10, 20, 40, and 80 kg N ha-1 yr-1) in order to assess the potential risk facing this orchid given impending scenarios of nitrogen deposition. Lower doses of nitrogen of up to 20 kg N ha yr–1, the dose that led to optimal plant performance, acted as fertilizer. For instance, the production of leaves and pseudobulbs were respectively 35% and 36% greater for plants receiving 20 kg N ha yr–1 than under any other dose. Also, the chlorophyll content and quantum yield peaked at 0.66 ± 0.03 g m-2 and 0.85 ± 0.01, respectively, for plants growing under the optimum dose. In contrast, toxic effects were observed at the higher doses of 40 and 80 kg N ha yr–1. The δ13C for leaves averaged –14.7 ± 0.2‰ regardless of the nitrogen dose. In turn, δ15N decreased as the nitrogen dose increased from 0.9 ±0.1‰ under 2.5 kg N ha-1 yr-1 to – 3.1 ± 0.2 ‰ under 80 kg N ha-1 yr-1, indicating that orchids preferentially assimilate NH4+ rather than NO3– of the solution under higher doses of nitrogen. Laelia speciosa showed a clear response to inputs of nitrogen, thus, increasing rates of atmospheric nitrogen deposition can pose an important threat for this species.}, keywords = {acid rain, biodiversity, CAM, conservation physiology, d15N, global change, Laelia, neotropical, nitrogen, orchid, plant nutrition, pollution, stable isotopes}, pubstate = {published}, tppubtype = {article} } Potential ecophysiological responses to nitrogen deposition, which is considered to be one of the leading causes for global biodiversity loss, were studied for the endangered endemic Mexican epiphytic orchid, Laelia speciosa, via a shadehouse dose-response experiment (doses were 2.5, 5, 10, 20, 40, and 80 kg N ha-1 yr-1) in order to assess the potential risk facing this orchid given impending scenarios of nitrogen deposition. Lower doses of nitrogen of up to 20 kg N ha yr–1, the dose that led to optimal plant performance, acted as fertilizer. For instance, the production of leaves and pseudobulbs were respectively 35% and 36% greater for plants receiving 20 kg N ha yr–1 than under any other dose. Also, the chlorophyll content and quantum yield peaked at 0.66 ± 0.03 g m-2 and 0.85 ± 0.01, respectively, for plants growing under the optimum dose. In contrast, toxic effects were observed at the higher doses of 40 and 80 kg N ha yr–1. The δ13C for leaves averaged –14.7 ± 0.2‰ regardless of the nitrogen dose. In turn, δ15N decreased as the nitrogen dose increased from 0.9 ±0.1‰ under 2.5 kg N ha-1 yr-1 to – 3.1 ± 0.2 ‰ under 80 kg N ha-1 yr-1, indicating that orchids preferentially assimilate NH4+ rather than NO3– of the solution under higher doses of nitrogen. Laelia speciosa showed a clear response to inputs of nitrogen, thus, increasing rates of atmospheric nitrogen deposition can pose an important threat for this species. |
2014 |
Díaz-Álvarez, E A; Lindig-Cisneros, R; Reyes-García, C; de la Barrera, E PREPRINT: Effects of simulated nitrogen deposition and a stable isotopic assessment for the neotropical epiphytic orchid Laelia speciosa Journal Article PeerJ Preprints, 2 , pp. e771v1, 2014, ( NOT PEER-REVIEWED. This is a rapid communication before peer review.). Links | BibTeX | Tags: CAM, epiphyte, global change, nitrogen, orchid, preprint @article{Díaz-Álvarez2014, title = {PREPRINT: Effects of simulated nitrogen deposition and a stable isotopic assessment for the neotropical epiphytic orchid Laelia speciosa}, author = {E. A. Díaz-Álvarez and R. Lindig-Cisneros and C. Reyes-García and E. de la Barrera}, url = {https://peerj.com/preprints/771/}, doi = {10.7287/peerj.preprints.771v1}, year = {2014}, date = {2014-12-31}, journal = {PeerJ Preprints}, volume = {2}, pages = {e771v1}, note = { NOT PEER-REVIEWED. This is a rapid communication before peer review.}, keywords = {CAM, epiphyte, global change, nitrogen, orchid, preprint}, pubstate = {published}, tppubtype = {article} } |
2013 |
Gómez-Romero, M; de la Barrera, E; Villegas, J; Lindig-Cisneros, R Fertilización y asociación con especies pioneras herbáceas en el crecimiento de Pinus pseudostrobus Journal Article Phyton, 82 , pp. 135-143, 2013. Links | BibTeX | Tags: erosion, Lupinus, nitrogen, phosphorus, Pinus, pioneer, restoration ecology, temperate forests, understory @article{Gómez-Romero2013, title = {Fertilización y asociación con especies pioneras herbáceas en el crecimiento de Pinus pseudostrobus}, author = {M. Gómez-Romero and E. de la Barrera and J. Villegas and R. Lindig-Cisneros}, url = {http://www.revistaphyton.fund-romuloraggio.org.ar/vol82/GOMEZ_ROMERO.pdf}, year = {2013}, date = {2013-12-12}, journal = {Phyton}, volume = {82}, pages = {135-143}, keywords = {erosion, Lupinus, nitrogen, phosphorus, Pinus, pioneer, restoration ecology, temperate forests, understory}, pubstate = {published}, tppubtype = {article} } |
2012 |
Tenopala, J; González, F J; de la Barrera, E Physiological responses of the green manure, Vicia sativa, to drought Journal Article Botanical Sciences, 90 (3), pp. 305-311, 2012. Links | BibTeX | Tags: agroecology, drought, isohydric, nitrogen, Raman, Vicia @article{Tenopala2012, title = {Physiological responses of the green manure, Vicia sativa, to drought }, author = {J. Tenopala and F. J. González and E. de la Barrera}, url = {http://www.scielo.org.mx/pdf/bs/v90n3/v90n3a6.pdf}, year = {2012}, date = {2012-03-01}, journal = {Botanical Sciences}, volume = {90}, number = {3}, pages = {305-311}, keywords = {agroecology, drought, isohydric, nitrogen, Raman, Vicia}, pubstate = {published}, tppubtype = {article} } |
Orozco-Martínez, R; del-Val, E; Lindig-Cisneros, R; Paz, H; Quesada, M; de la Barrera, E Evaluation of three organic fertilizers for growing the widely cultivated crop Cucurbita pepo L. Journal Article African Journal of Agricultural Research, 7 (7), pp. 1087-1097, 2012. Links | BibTeX | Tags: agriculture, agroecology, compost, crop, Cucurbita, Eichornia, invasive species, nitrogen @article{Orozco-Martínez2012, title = {Evaluation of three organic fertilizers for growing the widely cultivated crop Cucurbita pepo L.}, author = {R. Orozco-Martínez and E. del-Val and R. Lindig-Cisneros and H. Paz and M. Quesada and E. de la Barrera }, url = {http://www.academicjournals.org/journal/AJAR/article-abstract/7FF8F8B44821}, year = {2012}, date = {2012-02-19}, journal = {African Journal of Agricultural Research}, volume = {7}, number = {7}, pages = {1087-1097}, keywords = {agriculture, agroecology, compost, crop, Cucurbita, Eichornia, invasive species, nitrogen}, pubstate = {published}, tppubtype = {article} } |
2010 |
Escutia-Lara, Y; de la Barrera, E; Martínez-delaCruz, Y; Lindig-Cisneros, R Respuesta a la adición de nitrógeno y fósforo en el crecimiento de Typha domingensis y Schoenoplectus americanus Journal Article Boletín de la Sociedad Botánica de México, 87 , pp. 83-87, 2010. Links | BibTeX | Tags: nitrogen, nutrition, phosphorus, Schoenoplectus, Typha, wetland @article{Escutia-Lara2010, title = {Respuesta a la adición de nitrógeno y fósforo en el crecimiento de Typha domingensis y Schoenoplectus americanus}, author = {Y. Escutia-Lara and E. de la Barrera and Y. Martínez-delaCruz and R. Lindig-Cisneros}, url = {http://www.scielo.org.mx/scielo.php?pid=S0366-21282010000200007&script=sci_arttext}, year = {2010}, date = {2010-01-01}, journal = {Boletín de la Sociedad Botánica de México}, volume = {87}, pages = {83-87}, keywords = {nitrogen, nutrition, phosphorus, Schoenoplectus, Typha, wetland}, pubstate = {published}, tppubtype = {article} } |
2005 |
de la Barrera, E; Andrade, J L Challenges to plant megadiversity: how environmental physiology can help Journal Article New Phytologist, 167 , pp. 5-8, 2005. Links | BibTeX | Tags: acclimation, agriculture, cactus, climate change, conservation, ecophysiology, legume, nitrogen, plant diversity, public policy, seed, stable isotopes, tropical forest @article{delaBarrera2005b, title = {Challenges to plant megadiversity: how environmental physiology can help}, author = {E. de la Barrera and J. L. Andrade}, url = {http://agro.mx/wp-content/uploads/2016/06/012-De-la-Barrera-Andrade-2005-New-Phytol.pdf}, year = {2005}, date = {2005-05-01}, journal = {New Phytologist}, volume = {167}, pages = {5-8}, keywords = {acclimation, agriculture, cactus, climate change, conservation, ecophysiology, legume, nitrogen, plant diversity, public policy, seed, stable isotopes, tropical forest}, pubstate = {published}, tppubtype = {article} } |
2004 |
Nobel, P S; de la Barrera, E CO2 uptake by the cultivated hemiepiphytic cactus, Hylocereus undatus Journal Article Annals of Applied Biology, 144 , pp. 1-8, 2004. Links | BibTeX | Tags: abscisic acid, agriculture, cactus, CO2, cultivation, Hylocereus, nitrogen, photosynthesis, pitahaya, temperature, tropical forest, water @article{Nobel2004, title = {CO2 uptake by the cultivated hemiepiphytic cactus, Hylocereus undatus}, author = {P. S. Nobel and E. de la Barrera}, url = {http://agro.mx/wp-content/uploads/2015/09/010-Nobel-De-la-Barrera-2004-Ann-Appl-Biol.pdf}, year = {2004}, date = {2004-04-04}, journal = {Annals of Applied Biology}, volume = {144}, pages = {1-8}, keywords = {abscisic acid, agriculture, cactus, CO2, cultivation, Hylocereus, nitrogen, photosynthesis, pitahaya, temperature, tropical forest, water}, pubstate = {published}, tppubtype = {article} } |
2002 |
Nobel, P S; de la Barrera, E Nitrogen relations for net CO2 uptake by the cultivated hemiepiphytic cactus, Hylocereus undatus Journal Article Scientia Horticulturae, 96 , pp. 281-292, 2002. Links | BibTeX | Tags: cactus, CAM, chlorophyll, CO2, Hoagland solution, Hylocereus, nitrogen, nutrition, pitahaya @article{Nobel2002b, title = {Nitrogen relations for net CO2 uptake by the cultivated hemiepiphytic cactus, Hylocereus undatus}, author = {P. S. Nobel and E. de la Barrera }, url = {http://agro.mx/wp-content/uploads/2016/06/004-Nobel-De-la-Barrera-2002-Sci-Hort.pdf}, year = {2002}, date = {2002-04-01}, journal = {Scientia Horticulturae}, volume = {96}, pages = {281-292}, keywords = {cactus, CAM, chlorophyll, CO2, Hoagland solution, Hylocereus, nitrogen, nutrition, pitahaya}, pubstate = {published}, tppubtype = {article} } |
Publicaciones
acclimation agriculture biophysics cactus CAM climate change CO2 conservation physiology cultivation drought ecophysiology flower food security fruit global change Hylocereus invasive species nectar nitrogen opuntia orchid photosynthesis reproductive ecophysiology seed stable isotopes Stenocereus temperature tropical forest urban ecology water