Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico
Background Forest ecosystems are considered among the largest terrestrial carbon sinks. The dynamics of forest carbon depend on where the carbon is stored and its responses to environmental factors, as well as the physiology of the trees. Thus, threatened forest regions with high biodiversity have g...
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| Format: | Article |
| Language: | English |
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PeerJ Inc.
2019-06-01
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| Online Access: | https://peerj.com/articles/7085.pdf |
| _version_ | 1797417640610758656 |
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| author | Marcos González-Cásares Marín Pompa-García Alejandro Venegas-González Pedro Domínguez-Calleros José Hernández-Díaz Artemio Carrillo-Parra Marco González-Tagle |
| author_facet | Marcos González-Cásares Marín Pompa-García Alejandro Venegas-González Pedro Domínguez-Calleros José Hernández-Díaz Artemio Carrillo-Parra Marco González-Tagle |
| author_sort | Marcos González-Cásares |
| collection | DOAJ |
| description | Background Forest ecosystems are considered among the largest terrestrial carbon sinks. The dynamics of forest carbon depend on where the carbon is stored and its responses to environmental factors, as well as the physiology of the trees. Thus, threatened forest regions with high biodiversity have great scientific importance, such as the Sierra Madre Occidental in Mexico. A comparative analysis of tree species can expand the knowledge of the carbon cycle dynamics and ecological processes in this region. Here, we examined the growth, wood density, and carbon accumulation of two threatened species (Pseudotsuga menziesii and Cupressus lusitanica) to evaluate their hydroclimatic responsiveness. Methods The temporal variations in the carbon accumulation patterns of two co-occurring species (P. menziesii and C. lusitanica) and their sensitivity to the local climate were studied using dendroecological techniques, X-ray densitometry, and allometric equations. Results The results show that the annual carbon accumulation in C. lusitanica is positively associated with the temperature during the current fall, while the carbon accumulation in P. menziesii is correlated with the rainfall during the winter of the previous year. The climatic responses are associated with the intra-annual variations of wood density and ring widths for each species. The ring width was strongly correlated with carbon accumulation in C. lusitanica, while the mean wood density was linked to carbon accumulation in P. menziesii. Discussion This study has implications for the carbon accumulation rates of both species, revealing differences in the carbon capture patterns in response to climatic variations. Although the species coexist, there are variation in the hydroclimatic sensitivity of the annual carbon sequestered by trunks of trees, which would be associated with tree-ring width and/or wood density, i.e., directly by anatomical features. The results are relevant to analyze the response to the variability of climatic conditions expected in the near future of the tree communities of Sierra Madre Occidental. Therefore, this study provides a basis for modeling the long-term carbon budget projections in terrestrial ecosystems in northern Mexico. |
| first_indexed | 2024-03-09T06:21:45Z |
| format | Article |
| id | doaj.art-4477df66b061453ea60d9ab92dd0db6a |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:21:45Z |
| publishDate | 2019-06-01 |
| publisher | PeerJ Inc. |
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| spelling | doaj.art-4477df66b061453ea60d9ab92dd0db6a2023-12-03T11:35:07ZengPeerJ Inc.PeerJ2167-83592019-06-017e708510.7717/peerj.7085Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern MexicoMarcos González-Cásares0Marín Pompa-García1Alejandro Venegas-González2Pedro Domínguez-Calleros3José Hernández-Díaz4Artemio Carrillo-Parra5Marco González-Tagle6Facultad de Ciencias Forestales, Universidad Juárez del Estado de Durango, Durango, MéxicoFacultad de Ciencias Forestales, Universidad Juárez del Estado de Durango, Durango, MéxicoHémera Centro de Observación de la Tierra, Escuela de Ingeniería Forestal, Facultad de Ciencias, Universidad Mayor, Santiago, ChileFacultad de Ciencias Forestales, Universidad Juárez del Estado de Durango, Durango, MéxicoInstituto de Silvicultura e Industria de la Madera, Universidad Juárez del Estado de Durango, Durango, MéxicoInstituto de Silvicultura e Industria de la Madera, Universidad Juárez del Estado de Durango, Durango, MéxicoFacultad de Ciencias Forestales, Universidad Autónoma de Nuevo León, Nuevo León, MéxicoBackground Forest ecosystems are considered among the largest terrestrial carbon sinks. The dynamics of forest carbon depend on where the carbon is stored and its responses to environmental factors, as well as the physiology of the trees. Thus, threatened forest regions with high biodiversity have great scientific importance, such as the Sierra Madre Occidental in Mexico. A comparative analysis of tree species can expand the knowledge of the carbon cycle dynamics and ecological processes in this region. Here, we examined the growth, wood density, and carbon accumulation of two threatened species (Pseudotsuga menziesii and Cupressus lusitanica) to evaluate their hydroclimatic responsiveness. Methods The temporal variations in the carbon accumulation patterns of two co-occurring species (P. menziesii and C. lusitanica) and their sensitivity to the local climate were studied using dendroecological techniques, X-ray densitometry, and allometric equations. Results The results show that the annual carbon accumulation in C. lusitanica is positively associated with the temperature during the current fall, while the carbon accumulation in P. menziesii is correlated with the rainfall during the winter of the previous year. The climatic responses are associated with the intra-annual variations of wood density and ring widths for each species. The ring width was strongly correlated with carbon accumulation in C. lusitanica, while the mean wood density was linked to carbon accumulation in P. menziesii. Discussion This study has implications for the carbon accumulation rates of both species, revealing differences in the carbon capture patterns in response to climatic variations. Although the species coexist, there are variation in the hydroclimatic sensitivity of the annual carbon sequestered by trunks of trees, which would be associated with tree-ring width and/or wood density, i.e., directly by anatomical features. The results are relevant to analyze the response to the variability of climatic conditions expected in the near future of the tree communities of Sierra Madre Occidental. Therefore, this study provides a basis for modeling the long-term carbon budget projections in terrestrial ecosystems in northern Mexico.https://peerj.com/articles/7085.pdfDendroecologyClimate changeWood densityAboveground biomassTree-ring analysis |
| spellingShingle | Marcos González-Cásares Marín Pompa-García Alejandro Venegas-González Pedro Domínguez-Calleros José Hernández-Díaz Artemio Carrillo-Parra Marco González-Tagle Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico PeerJ Dendroecology Climate change Wood density Aboveground biomass Tree-ring analysis |
| title | Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico |
| title_full | Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico |
| title_fullStr | Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico |
| title_full_unstemmed | Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico |
| title_short | Hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern Mexico |
| title_sort | hydroclimatic variations reveal differences in carbon capture in two sympatric conifers in northern mexico |
| topic | Dendroecology Climate change Wood density Aboveground biomass Tree-ring analysis |
| url | https://peerj.com/articles/7085.pdf |
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