2020
Díaz-Álvarez, E. A.; de la Barrera, E.; Barrios-Hernández, E. Y.; Arróniz-Crespo, M.
Morphophysiological screening of potential organisms for biomonitoring nitrogen deposition Journal Article
In: Ecological Indicators, vol. 108, pp. 105729, 2020, ISSN: 1470-160X.
Abstract | Links | BibTeX | Tags: atmospheric pollution, CAM, global change, Latin America, Mexico, neotropical, nitrogen
@article{Díaz-Álvarez2020,
title = {Morphophysiological screening of potential organisms for biomonitoring nitrogen deposition},
author = {E. A. Díaz-Álvarez and E. de la Barrera and E. Y. Barrios-Hernández and M. Arróniz-Crespo},
url = {https://www.sciencedirect.com/science/article/pii/S1470160X19307228},
doi = {10.1016/j.ecolind.2019.105729},
issn = {1470-160X},
year = {2020},
date = {2020-01-06},
journal = {Ecological Indicators},
volume = {108},
pages = {105729},
abstract = {The intensification of different anthropic activities has led to a doubling of the emitted reactive nitrogen species since the second half of the XX century, resulting in the increase of nitrogen deposition. This poses a major threat to global biodiversity. However, in developing countries the monitoring of atmospheric deposition has shown to be difficult. For these reasons, the aim of this study was to assess, by means of a greenhouse dose-response experiment, the biomonitoring potential of two mosses, Braunia secunda and Thuidium delicatulum, and two epiphytic bromeliads, Tillandsia recurvata and Tillandsia usneoides, which are widely distributed in Latin America. A significant increase of the phosphomonoesterase activity was observed for the mosses, particularly under a High-nitrogen treatment, a parameter that decreased for the bromeliads. In turn, the nitrate reductase activity decreased over the course of the experiment for the mosses, but it remained almost unchanged for both tillandsias. While the nitrogen content for the mosses increased, it fluctuated for the bromeliads. Braunia secunda became greener under the Low-nitrogen than under the other treatments, while the coloration for T. delicatulum turned to brown under all treatments. The tillandsias remained visually unchanged under all treatments. The mosses had a clear response to the simulated nitrogen deposition, with B. secunda being more tolerant than T. delicatulum. Neither tillandsia presented a clear response to the treatments. Thus, the moss B. secunda is a very suitable species for biomonitoring nitrogen deposition, while the other species evaluated were deemed unsuitable.},
keywords = {atmospheric pollution, CAM, global change, Latin America, Mexico, neotropical, nitrogen},
pubstate = {published},
tppubtype = {article}
}
The intensification of different anthropic activities has led to a doubling of the emitted reactive nitrogen species since the second half of the XX century, resulting in the increase of nitrogen deposition. This poses a major threat to global biodiversity. However, in developing countries the monitoring of atmospheric deposition has shown to be difficult. For these reasons, the aim of this study was to assess, by means of a greenhouse dose-response experiment, the biomonitoring potential of two mosses, Braunia secunda and Thuidium delicatulum, and two epiphytic bromeliads, Tillandsia recurvata and Tillandsia usneoides, which are widely distributed in Latin America. A significant increase of the phosphomonoesterase activity was observed for the mosses, particularly under a High-nitrogen treatment, a parameter that decreased for the bromeliads. In turn, the nitrate reductase activity decreased over the course of the experiment for the mosses, but it remained almost unchanged for both tillandsias. While the nitrogen content for the mosses increased, it fluctuated for the bromeliads. Braunia secunda became greener under the Low-nitrogen than under the other treatments, while the coloration for T. delicatulum turned to brown under all treatments. The tillandsias remained visually unchanged under all treatments. The mosses had a clear response to the simulated nitrogen deposition, with B. secunda being more tolerant than T. delicatulum. Neither tillandsia presented a clear response to the treatments. Thus, the moss B. secunda is a very suitable species for biomonitoring nitrogen deposition, while the other species evaluated were deemed unsuitable.
2019
Díaz-Álvarez, E. A.; Felix, J. D.; de la Barrera, E.
Elemental and isotopic assessment for Colombian orchids from a montane cloud forest: a baseline for global environmental change Journal Article
In: Acta Physiologiae Plantarum, vol. 41, no. 6, pp. 99, 2019.
Abstract | Links | BibTeX | Tags: biodiversity, CAM, ecophysiology, epiphytes, global change, nitrogen, orchid, photosynthesis, stable isotopes
@article{Díaz-Álvarez2019,
title = {Elemental and isotopic assessment for Colombian orchids from a montane cloud forest: a baseline for global environmental change},
author = {E. A. Díaz-Álvarez and J. D. Felix and E. de la Barrera},
url = {https://rdcu.be/bCRG6},
doi = {10.1007/s11738-019-2893-y},
year = {2019},
date = {2019-05-16},
journal = {Acta Physiologiae Plantarum},
volume = {41},
number = {6},
pages = {99},
abstract = {Orchidaceae is the largest family of plants, reaching its maximum diversity in Colombia where 4000 species have been registered. One particular ecosystem with high diversity of orchids is the tropical montane cloud forest characterized by high humidity and low air temperatures. However, due to anthropic pressure such as land use change its area has been reduced. This is not the only anthropic disturbance that can affect the continuity of this forest and orchids, climate change and nitrogen deposition also become threats. By means of elemental composition and isotopic measurements of carbon and nitrogen, we determined the photosynthetic pathway for orchids from a tropical cloud forest in Colombia, for which, we also evaluated the nutritional status of nitrogen and its relationship with atmospheric deposition. We found 46 species from 18 genera; of these, 19 species were epiphytic, 9 lithophytic and 18 terrestrials. The carbon content was not significantly different among the species evaluated, averaging 46.4 ± 0.41% (dry weight). In turn, only one terrestrial orchid had a nitrogen content above 2.2%, averaged 1.4 ± 0.07% for the remaining 45 species. The δ13C that averaged − 28.1 ± 0.4‰ for 45 species was typical of C3 plants, while only one species, whose δ13C of 18.8‰ can be considered CAM. The δ15N values for 44 orchids were negative, in total they ranged from − 8.1 to 4.5‰. It can be concluded that the temperatures in this area are not yet high enough to produce a noticeable change in photosynthesis as evidenced by the carbon content of orchids, however, the expected rise would bring harmful consequences for these populations of orchids, especially when considering that these orchids were collected at the highest altitudinal range of the region. Moreover, the rates of nitrogen deposition are not high enough yet to leave a significant signal in the vegetation.},
keywords = {biodiversity, CAM, ecophysiology, epiphytes, global change, nitrogen, orchid, photosynthesis, stable isotopes},
pubstate = {published},
tppubtype = {article}
}
Orchidaceae is the largest family of plants, reaching its maximum diversity in Colombia where 4000 species have been registered. One particular ecosystem with high diversity of orchids is the tropical montane cloud forest characterized by high humidity and low air temperatures. However, due to anthropic pressure such as land use change its area has been reduced. This is not the only anthropic disturbance that can affect the continuity of this forest and orchids, climate change and nitrogen deposition also become threats. By means of elemental composition and isotopic measurements of carbon and nitrogen, we determined the photosynthetic pathway for orchids from a tropical cloud forest in Colombia, for which, we also evaluated the nutritional status of nitrogen and its relationship with atmospheric deposition. We found 46 species from 18 genera; of these, 19 species were epiphytic, 9 lithophytic and 18 terrestrials. The carbon content was not significantly different among the species evaluated, averaging 46.4 ± 0.41% (dry weight). In turn, only one terrestrial orchid had a nitrogen content above 2.2%, averaged 1.4 ± 0.07% for the remaining 45 species. The δ13C that averaged − 28.1 ± 0.4‰ for 45 species was typical of C3 plants, while only one species, whose δ13C of 18.8‰ can be considered CAM. The δ15N values for 44 orchids were negative, in total they ranged from − 8.1 to 4.5‰. It can be concluded that the temperatures in this area are not yet high enough to produce a noticeable change in photosynthesis as evidenced by the carbon content of orchids, however, the expected rise would bring harmful consequences for these populations of orchids, especially when considering that these orchids were collected at the highest altitudinal range of the region. Moreover, the rates of nitrogen deposition are not high enough yet to leave a significant signal in the vegetation.
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
In: BioRxiv, vol. 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.; 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
In: Journal of Plant Research, vol. 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.
Villa-Reyes, F.; de la Barrera, E.
Environmental cues for germination of the invasive bunch grass Pennisetum ciliare (L.) Link Journal Article
In: Acta Physiologiae Plantarum, vol. 38, pp. 156, 2016.
Abstract | Links | BibTeX | Tags: buffel grass, Cenchrus ciliaris, ecophysiology, germination, global change, invasive species, Pennisetum ciliare, zacate buffel
@article{Villa-Reyes2016,
title = {Environmental cues for germination of the invasive bunch grass Pennisetum ciliare (L.) Link},
author = {F. Villa-Reyes and E. de la Barrera},
url = {http://rdcu.be/noeu
http://link.springer.com/article/10.1007/s11738-016-2175-x},
doi = {10.1007/s11738-016-2175-x},
year = {2016},
date = {2016-05-28},
journal = {Acta Physiologiae Plantarum},
volume = {38},
pages = {156},
abstract = {Responses of seed germination to air temperature, water potential, light, and smoke were studied in the laboratory for seeds of the invasive bunch grass Pennisetum ciliare (L.) Link (syn. Cenchrus ciliare L.; buffel grass). First introduced to North America during the mid-20th Century for establishing pastures, this African bunch grass has become an invasive species of concern. Across all the experiments conducted, a low germination was observed for P. ciliare fascicles that never exceeded 30% at 21 days after sowing. Optimal day/night air temperatures for germination, controlled with an environmental chamber, were 25/15 and 30/20 ºC, while extreme temperatures of 15/5 and 45/35 ºC inhibited germination. By sowing seeds of P. ciliare under different water potentials, created with aqueous solutions of polyethylene glycol, an optimum of -0.03 MPa led to the highest germination, while no germination was observed at -1.0 MPa. Monochromatic optical filters were utilized to germinate seeds under various wavelengths, of which red (650 nm) and far red (730 nm) led to the highest germination. In addition, seeds that were incubated in the dark had higher germination than those incubated under white light. Incubation in smoke water, which can stimulate germination of phyrophytic species, resulted in a marginal inhibition of germination compared with imbibition with distilled water.},
keywords = {buffel grass, Cenchrus ciliaris, ecophysiology, germination, global change, invasive species, Pennisetum ciliare, zacate buffel},
pubstate = {published},
tppubtype = {article}
}
Responses of seed germination to air temperature, water potential, light, and smoke were studied in the laboratory for seeds of the invasive bunch grass Pennisetum ciliare (L.) Link (syn. Cenchrus ciliare L.; buffel grass). First introduced to North America during the mid-20th Century for establishing pastures, this African bunch grass has become an invasive species of concern. Across all the experiments conducted, a low germination was observed for P. ciliare fascicles that never exceeded 30% at 21 days after sowing. Optimal day/night air temperatures for germination, controlled with an environmental chamber, were 25/15 and 30/20 ºC, while extreme temperatures of 15/5 and 45/35 ºC inhibited germination. By sowing seeds of P. ciliare under different water potentials, created with aqueous solutions of polyethylene glycol, an optimum of -0.03 MPa led to the highest germination, while no germination was observed at -1.0 MPa. Monochromatic optical filters were utilized to germinate seeds under various wavelengths, of which red (650 nm) and far red (730 nm) led to the highest germination. In addition, seeds that were incubated in the dark had higher germination than those incubated under white light. Incubation in smoke water, which can stimulate germination of phyrophytic species, resulted in a marginal inhibition of germination compared with imbibition with distilled water.
2015
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
In: PeerJ, vol. 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
In: PeerJ Preprints, vol. 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}
}
2009
de la Barrera, E.; Smith, W. K. (Ed.)
Perspectives in Biophysical Plant Ecophysiology: A Tribute to Park S. Nobel Book
Universidad Nacional Autónoma de México, 2009.
Abstract | Links | BibTeX | Tags: biophysical, cactus, CAM, ecophysiology, festschrift, global change, temperature
@book{delaBarrera2009,
title = {Perspectives in Biophysical Plant Ecophysiology: A Tribute to Park S. Nobel},
editor = {E. de la Barrera and W. K. Smith},
url = {http://www.librosoa.unam.mx/handle/123456789/2012},
year = {2009},
date = {2009-01-01},
publisher = {Universidad Nacional Autónoma de México},
abstract = {Park S. Nobel (Distinguished Professor Emeritus, University of California, Los Angeles) pioneered the coupling of cellular physical chemistry with plant physiology, providing a sound physicochemical interpretation of the laws of diffusion to a rapidly expanding field of plant physiological ecology. For the first time, the commonly applied Fick's and Ohm's Laws could be explained on a thermodynamic basis with exceptional clarity and a strong analytical approach. His classical textbook is the only one of its kind to provide an extensive array of quantitative problems and solutions in the field of plant biophysics and ecophysiology, extending from the molecular to the ecological level. Accompanying Park's production of such a prestigious textbook are an extraordinary number of refereed publications and four other books on desert plant ecophysiology. In this festschrift, former graduate students and postdocs, as well as colleagues of Prof. Nobel present a series of reviews that include scales from sub-cellular to global, and topics that range from desert succulent biology to the physiology of alpine plants, encompassing basic research and applications in agronomy and conservation biology. This state-of-the-field survey provides current and useful information for professionals and graduate students searching for research topics, while illustrating the broad span of the influence that Nobel's career has had on modern ecophysiology.},
keywords = {biophysical, cactus, CAM, ecophysiology, festschrift, global change, temperature},
pubstate = {published},
tppubtype = {book}
}
Park S. Nobel (Distinguished Professor Emeritus, University of California, Los Angeles) pioneered the coupling of cellular physical chemistry with plant physiology, providing a sound physicochemical interpretation of the laws of diffusion to a rapidly expanding field of plant physiological ecology. For the first time, the commonly applied Fick's and Ohm's Laws could be explained on a thermodynamic basis with exceptional clarity and a strong analytical approach. His classical textbook is the only one of its kind to provide an extensive array of quantitative problems and solutions in the field of plant biophysics and ecophysiology, extending from the molecular to the ecological level. Accompanying Park's production of such a prestigious textbook are an extraordinary number of refereed publications and four other books on desert plant ecophysiology. In this festschrift, former graduate students and postdocs, as well as colleagues of Prof. Nobel present a series of reviews that include scales from sub-cellular to global, and topics that range from desert succulent biology to the physiology of alpine plants, encompassing basic research and applications in agronomy and conservation biology. This state-of-the-field survey provides current and useful information for professionals and graduate students searching for research topics, while illustrating the broad span of the influence that Nobel's career has had on modern ecophysiology.
de la Barrera, E.; Smith, W. K.
Epilogue Book Chapter
In: de la Barrera, E.; Smith, W. K. (Ed.): Perspectives in Biophysical Plant Ecophysiology: A Tribute to Park S. Nobel, pp. 393-397, UNAM, 2009.
Links | BibTeX | Tags: biophysics, ecophysiology, global change, public policy
@inbook{delaBarrera2009b,
title = {Epilogue},
author = {E. de la Barrera and W. K. Smith },
editor = {E. de la Barrera and W. K. Smith },
url = {https://books.google.com.mx/books?id=FOLucdeycDkC&lpg=PA393&ots=9pz9EVuNJz&dq=epilogue%20erick%20de%20la%20barrera%20perspectives%20biophysical%20ecophysiology&pg=PA393#v=onepage&q&f=false},
year = {2009},
date = {2009-01-01},
booktitle = {Perspectives in Biophysical Plant Ecophysiology: A Tribute to Park S. Nobel},
pages = {393-397},
publisher = {UNAM},
keywords = {biophysics, ecophysiology, global change, public policy},
pubstate = {published},
tppubtype = {inbook}
}
2008
de la Barrera, E.
Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert Journal Article
In: Revista Mexicana de Biodiversidad, vol. 79, pp. 385-392, 2008.
Links | BibTeX | Tags: buffel grass, Cenchrus, cultivation, ENSO, forage, global change, invasive species, Pennisetum, Sonoran Desert, urban sprawl
@article{delaBarrera2008,
title = {Recent invasion of buffel grass (Cenchrus ciliaris) of a natural protected area from the southern Sonoran Desert},
author = {E. de la Barrera},
url = {http://www.scielo.org.mx/scielo.php?pid=S1870-34532008000200012&script=sci_arttext},
year = {2008},
date = {2008-01-01},
journal = {Revista Mexicana de Biodiversidad},
volume = {79},
pages = {385-392},
keywords = {buffel grass, Cenchrus, cultivation, ENSO, forage, global change, invasive species, Pennisetum, Sonoran Desert, urban sprawl},
pubstate = {published},
tppubtype = {article}
}
2007
de la Barrera, E.; Castellanos, A. E.
High temperature effects on gas exchange for the invasive buffel grass (Pennisetum ciliare [L.] Link) Journal Article
In: Weed Biology and Management, vol. 7, pp. 128-131, 2007.
Links | BibTeX | Tags: acclimation, buffel grass, Cenchrus, CO2, cultivation, forage, global change, invasive species, Pennisetum, photosynthesis, shade, Sonoran Desert, temperature, transpiration, water
@article{delaBarrera2007,
title = {High temperature effects on gas exchange for the invasive buffel grass (Pennisetum ciliare [L.] Link)},
author = {E. de la Barrera and A. E. Castellanos},
url = {http://agro.mx/wp-content/uploads/2016/06/014-De-la-Barrera-Castellanos-2007-WBM.pdf},
year = {2007},
date = {2007-01-01},
journal = {Weed Biology and Management},
volume = {7},
pages = {128-131},
keywords = {acclimation, buffel grass, Cenchrus, CO2, cultivation, forage, global change, invasive species, Pennisetum, photosynthesis, shade, Sonoran Desert, temperature, transpiration, water},
pubstate = {published},
tppubtype = {article}
}