2019
González-Rodríguez, Antonio; García-Oliva, Felipe; Tapia-Torres, Yunuen; Morón-Cruz, Alberto; Chávez-Vergara, Bruno; Baca-Patiño, Brenda; Cuevas-Reyes, Pablo
Oak Community Diversity Affects Nitrogen Concentration in Litter and Soil report
2019.
Resumen | Etiquetas: biogeochemical cycles, ecological interactions, species coexistence, Temperate deciduous forest
@report{nokey,
title = {Oak Community Diversity Affects Nitrogen Concentration in Litter and Soil},
author = {Antonio González-Rodríguez and Felipe García-Oliva and Yunuen Tapia-Torres and Alberto Morón-Cruz and Bruno Chávez-Vergara and Brenda Baca-Patiño and Pablo Cuevas-Reyes},
year = {2019},
date = {2019-01-01},
journal = {International Oaks},
volume = {30},
abstract = {Nutrient cycling in forest ecosystems depends mainly on litter decomposition. However, plant species differ in foliar resorption efficiency (FRE), that is, the process by which a proportion of the nitrogen (N) and phosphorus (P) contained in the leaf tissue is recovered before leaf abscission. Therefore, species differ in the quantity and quality of resources that they return to the soil, with important consequences for associated biotic communities and ecosystem processes. Previous studies have suggested that Red Oak species (section Lobatae) have a higher FRE than White Oak species (section Quercus). Therefore, an effect of oak community diversity and composition can be expected on nutrient concentration in litter and soil. To test this hypothesis, we evaluated oak community diversity and composition along 66 transects in 22 sites in central-western Mexico and quantified total N and P in litter and soil samples. Total N concentration in litter was positively correlated with total oak species richness, White Oak species richness and the proportion of White Oak species. In soil, total N showed a positive correlation with total species richness. Total P did not show a correlation with any of the descriptors of the oak community diversity and structure. We suggest that significant interactions at the level of nutrient cycling could exist between species of these two oak sections, influencing the oak community assembly process, associated organisms, and ecosystem processes.},
keywords = {biogeochemical cycles, ecological interactions, species coexistence, Temperate deciduous forest},
pubstate = {published},
tppubtype = {report}
}
Nutrient cycling in forest ecosystems depends mainly on litter decomposition. However, plant species differ in foliar resorption efficiency (FRE), that is, the process by which a proportion of the nitrogen (N) and phosphorus (P) contained in the leaf tissue is recovered before leaf abscission. Therefore, species differ in the quantity and quality of resources that they return to the soil, with important consequences for associated biotic communities and ecosystem processes. Previous studies have suggested that Red Oak species (section Lobatae) have a higher FRE than White Oak species (section Quercus). Therefore, an effect of oak community diversity and composition can be expected on nutrient concentration in litter and soil. To test this hypothesis, we evaluated oak community diversity and composition along 66 transects in 22 sites in central-western Mexico and quantified total N and P in litter and soil samples. Total N concentration in litter was positively correlated with total oak species richness, White Oak species richness and the proportion of White Oak species. In soil, total N showed a positive correlation with total species richness. Total P did not show a correlation with any of the descriptors of the oak community diversity and structure. We suggest that significant interactions at the level of nutrient cycling could exist between species of these two oak sections, influencing the oak community assembly process, associated organisms, and ecosystem processes.
2015
Chávez-Vergara, Bruno M.; González-Rodríguez, Antonio; Etchevers, Jorge D.; Oyama, Ken; García-Oliva, Felipe
Foliar nutrient resorption constrains soil nutrient transformations under two native oak species in a temperate deciduous forest in Mexico Artículo de revista
En: European Journal of Forest Research, vol. 134, iss. 5, pp. 803-817, 2015, ISSN: 16124669.
Resumen | Enlaces | Etiquetas: Biogeochemistry, Functional interactions, Microbial transformations, Quercus, Species footprint, Temperate deciduous forest
@article{Chavez-Vergara2015,
title = {Foliar nutrient resorption constrains soil nutrient transformations under two native oak species in a temperate deciduous forest in Mexico},
author = {Bruno M. Chávez-Vergara and Antonio González-Rodríguez and Jorge D. Etchevers and Ken Oyama and Felipe García-Oliva},
doi = {10.1007/s10342-015-0891-1},
issn = {16124669},
year = {2015},
date = {2015-01-01},
journal = {European Journal of Forest Research},
volume = {134},
issue = {5},
pages = {803-817},
abstract = {Foliar nutrient resorption (FNR) is a key process in the dynamics of nutrients in a forest ecosystem. Along with other factors, FNR regulates the chemical composition of the forest floor and, consequently, the rates of organic matter decomposition and soil nutrient availability. The main objective of the present study was to examine the effect of FNR of two deciduous oak species (Quercus castanea and Q. deserticola) in the litter and soil nutrient dynamics, in addition to analyze whether the interaction between two species was positive (synergistic) or negative (antagonistic) through the mixed litter from two species. For this purpose, the nutrient concentration of green leaves, litterfall, litter and soil was measured, as well as soil microbial activity. These measurements were taken in isolated stands with the presence of one of the oak species and stands with the two oak species mixed. Quercus deserticola, with lower FNR, produced litter with a higher N concentration, which apparently enhancing microbial activity in the forest floor litter and increased nutrient transformations and soil fertility. In contrast, Q. castanea has a higher FNR and produced litter with a lower nutrient concentration. The microbial soil community associated with Q. castanea must therefore invest more energy in metabolic processes at the expense of biomass growth. However, forest floor nutrient transformations were more intense and soil fertility increased in areas where both species intermix; in this case, the latter species received the rich-nutrient litterfall of Q. deserticola. These results suggest a strong footprint of species traits on microbial activities and soil nutrient transformations.},
keywords = {Biogeochemistry, Functional interactions, Microbial transformations, Quercus, Species footprint, Temperate deciduous forest},
pubstate = {published},
tppubtype = {article}
}
Foliar nutrient resorption (FNR) is a key process in the dynamics of nutrients in a forest ecosystem. Along with other factors, FNR regulates the chemical composition of the forest floor and, consequently, the rates of organic matter decomposition and soil nutrient availability. The main objective of the present study was to examine the effect of FNR of two deciduous oak species (Quercus castanea and Q. deserticola) in the litter and soil nutrient dynamics, in addition to analyze whether the interaction between two species was positive (synergistic) or negative (antagonistic) through the mixed litter from two species. For this purpose, the nutrient concentration of green leaves, litterfall, litter and soil was measured, as well as soil microbial activity. These measurements were taken in isolated stands with the presence of one of the oak species and stands with the two oak species mixed. Quercus deserticola, with lower FNR, produced litter with a higher N concentration, which apparently enhancing microbial activity in the forest floor litter and increased nutrient transformations and soil fertility. In contrast, Q. castanea has a higher FNR and produced litter with a lower nutrient concentration. The microbial soil community associated with Q. castanea must therefore invest more energy in metabolic processes at the expense of biomass growth. However, forest floor nutrient transformations were more intense and soil fertility increased in areas where both species intermix; in this case, the latter species received the rich-nutrient litterfall of Q. deserticola. These results suggest a strong footprint of species traits on microbial activities and soil nutrient transformations.