Human impacts and aridity differentially alter soil N availability in drylands worldwide
Climate and human impacts are changing the nitrogen (N) inputs and losses in terrestrial ecosystems. However, it is largely unknown how these two major drivers of global change will simultaneously influence the N cycle in drylands, the largest terrestrial biome on the planet. We conducted a global o...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/72456 |
| _version_ | 1855540683339726848 |
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| author | Delgado Baquerizo, M. Maestre, M. Gallardo, A. Eldridge, D.J. Soliveres, S. Bowker, M.A. Prado Comesana, A. Gaitan, J. Quero, J.L. Ochoa, V. Gozalo, B. García Gomez, M. García Palacios, P. Berdugo, M. Valencia, E. Escolar, C. Arredondo, T. Barraza-Zepeda, C. Boeken, B.R. Bran, D. Cabrera, O. Carreira, J.A. Chaieb, M. Conceição, A.A. Derak, M. Ernst, R. Espinosa, C.I. Florentino, A. Gatica, G. Ghiloufi, W. Gómez Gonzalez, S. Gutiérrez, J.R. Hernández, R.M. Huber-Sannwald, E. Jankju, M. Mau, R.L. Miriti, M. Monerris, J. Morici, E. Muchane, M. Naseri, K. Pucheta, E. Ramírez, E. Ramírez, D. Romao, R.L. Tighe, M. Torres, D. Torres Diaz, C. Val, J. Veiga, J.P. Wang, D. Yuan, X. Zaady, E. |
| author_browse | Arredondo, T. Barraza-Zepeda, C. Berdugo, M. Boeken, B.R. Bowker, M.A. Bran, D. Cabrera, O. Carreira, J.A. Chaieb, M. Conceição, A.A. Delgado Baquerizo, M. Derak, M. Eldridge, D.J. Ernst, R. Escolar, C. Espinosa, C.I. Florentino, A. Gaitan, J. Gallardo, A. García Gomez, M. García Palacios, P. Gatica, G. Ghiloufi, W. Gozalo, B. Gutiérrez, J.R. Gómez Gonzalez, S. Hernández, R.M. Huber-Sannwald, E. Jankju, M. Maestre, M. Mau, R.L. Miriti, M. Monerris, J. Morici, E. Muchane, M. Naseri, K. Ochoa, V. Prado Comesana, A. Pucheta, E. Quero, J.L. Ramírez, D. Ramírez, E. Romao, R.L. Soliveres, S. Tighe, M. Torres Diaz, C. Torres, D. Val, J. Valencia, E. Veiga, J.P. Wang, D. Yuan, X. Zaady, E. |
| author_facet | Delgado Baquerizo, M. Maestre, M. Gallardo, A. Eldridge, D.J. Soliveres, S. Bowker, M.A. Prado Comesana, A. Gaitan, J. Quero, J.L. Ochoa, V. Gozalo, B. García Gomez, M. García Palacios, P. Berdugo, M. Valencia, E. Escolar, C. Arredondo, T. Barraza-Zepeda, C. Boeken, B.R. Bran, D. Cabrera, O. Carreira, J.A. Chaieb, M. Conceição, A.A. Derak, M. Ernst, R. Espinosa, C.I. Florentino, A. Gatica, G. Ghiloufi, W. Gómez Gonzalez, S. Gutiérrez, J.R. Hernández, R.M. Huber-Sannwald, E. Jankju, M. Mau, R.L. Miriti, M. Monerris, J. Morici, E. Muchane, M. Naseri, K. Pucheta, E. Ramírez, E. Ramírez, D. Romao, R.L. Tighe, M. Torres, D. Torres Diaz, C. Val, J. Veiga, J.P. Wang, D. Yuan, X. Zaady, E. |
| author_sort | Delgado Baquerizo, M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Climate and human impacts are changing the nitrogen (N) inputs and losses in terrestrial ecosystems. However, it is largely unknown how these two major drivers of global change will simultaneously influence the N cycle in drylands, the largest terrestrial biome on the planet. We conducted a global observational study to evaluate how aridity and human impacts, together with biotic and abiotic factors, affect key soil variables of the N cycle.Two hundred and twenty‐four dryland sites from all continents except Antarctica widely differing in their environmental conditions and human influence.Using a standardized field survey, we measured aridity, human impacts (i.e. proxies of land uses and air pollution), key biophysical variables (i.e. soil pH and texture and total plant cover) and six important variables related to N cycling in soils: total N, organic N, ammonium, nitrate, dissolved organic:inorganic N and N mineralization rates. We used structural equation modelling to assess the direct and indirect effects of aridity, human impacts and key biophysical variables on the N cycle.Human impacts increased the concentration of total N, while aridity reduced it. The effects of aridity and human impacts on the N cycle were spatially disconnected, which may favour scarcity of N in the most arid areas and promote its accumulation in the least arid areas.We found that increasing aridity and anthropogenic pressure are spatially disconnected in drylands. This implies that while places with low aridity and high human impact accumulate N, most arid sites with the lowest human impacts lose N. Our analyses also provide evidence that both increasing aridity and human impacts may enhance the relative dominance of inorganic N in dryland soils, having a negative impact on key functions and services provided by these ecosystems. |
| format | Journal Article |
| id | CGSpace72456 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace724562024-05-01T08:19:45Z Human impacts and aridity differentially alter soil N availability in drylands worldwide Delgado Baquerizo, M. Maestre, M. Gallardo, A. Eldridge, D.J. Soliveres, S. Bowker, M.A. Prado Comesana, A. Gaitan, J. Quero, J.L. Ochoa, V. Gozalo, B. García Gomez, M. García Palacios, P. Berdugo, M. Valencia, E. Escolar, C. Arredondo, T. Barraza-Zepeda, C. Boeken, B.R. Bran, D. Cabrera, O. Carreira, J.A. Chaieb, M. Conceição, A.A. Derak, M. Ernst, R. Espinosa, C.I. Florentino, A. Gatica, G. Ghiloufi, W. Gómez Gonzalez, S. Gutiérrez, J.R. Hernández, R.M. Huber-Sannwald, E. Jankju, M. Mau, R.L. Miriti, M. Monerris, J. Morici, E. Muchane, M. Naseri, K. Pucheta, E. Ramírez, E. Ramírez, D. Romao, R.L. Tighe, M. Torres, D. Torres Diaz, C. Val, J. Veiga, J.P. Wang, D. Yuan, X. Zaady, E. arid zones nitrogen cycle climate ecosystems Climate and human impacts are changing the nitrogen (N) inputs and losses in terrestrial ecosystems. However, it is largely unknown how these two major drivers of global change will simultaneously influence the N cycle in drylands, the largest terrestrial biome on the planet. We conducted a global observational study to evaluate how aridity and human impacts, together with biotic and abiotic factors, affect key soil variables of the N cycle.Two hundred and twenty‐four dryland sites from all continents except Antarctica widely differing in their environmental conditions and human influence.Using a standardized field survey, we measured aridity, human impacts (i.e. proxies of land uses and air pollution), key biophysical variables (i.e. soil pH and texture and total plant cover) and six important variables related to N cycling in soils: total N, organic N, ammonium, nitrate, dissolved organic:inorganic N and N mineralization rates. We used structural equation modelling to assess the direct and indirect effects of aridity, human impacts and key biophysical variables on the N cycle.Human impacts increased the concentration of total N, while aridity reduced it. The effects of aridity and human impacts on the N cycle were spatially disconnected, which may favour scarcity of N in the most arid areas and promote its accumulation in the least arid areas.We found that increasing aridity and anthropogenic pressure are spatially disconnected in drylands. This implies that while places with low aridity and high human impact accumulate N, most arid sites with the lowest human impacts lose N. Our analyses also provide evidence that both increasing aridity and human impacts may enhance the relative dominance of inorganic N in dryland soils, having a negative impact on key functions and services provided by these ecosystems. 2016-01 2016-03-04T15:48:15Z 2016-03-04T15:48:15Z Journal Article https://hdl.handle.net/10568/72456 en Limited Access Wiley Delgado-Baquerizo, M.; Maestre, F.; Gallardo, A.; Eldridge, D.J.; Soliveres, S.; Bowker, M.A.; Prado-Comesana, A.; Gaitan, J.; Quero, J.L.; Ochoa, V.; Gozalo, B.; Garcia-Gomez, M.; Garcia-Palacios, P.; Berdugo, M.; Valencia, E.; Escolar, C.; Arredondo, T.; Barraza-Zepeda, C.; Boeken, B.R.; Bran, D.; Cabrera, O.; Carreira, J.A.; Chaieb, M.; Conceicao, A.A.; Derak, M.; Ernst, R.; Espinosa, C.I.; Florentino, A.; Gatica, G.; Ghiloufi, W.; Gomez-Gonzalez, S.; Gutierrez, J.R.; Hernandez, R.M.; Huber-Sannwald, E.; Jankju, M.; Mau, R.L.; Miriti, M.; Monerris, J.; Morici, E.; Muchane, M.; Naseri, K.; Pucheta, E.; Ramirez, E.; Ramirez-Collantes, D.A.; Romao, R.L.; Tighe, M.; Torres, D.; Torres-Diaz, C.; Val, J.; Veiga, J.P.; Wang, D.; Yuan, X.; Zaady, E. 2016. Human impacts and aridity differentially alter soil N availability in drylands worldwide. Global Ecology and Biogeography. (UK). ISSN 1466-822X. 25(1):36-45 |
| spellingShingle | arid zones nitrogen cycle climate ecosystems Delgado Baquerizo, M. Maestre, M. Gallardo, A. Eldridge, D.J. Soliveres, S. Bowker, M.A. Prado Comesana, A. Gaitan, J. Quero, J.L. Ochoa, V. Gozalo, B. García Gomez, M. García Palacios, P. Berdugo, M. Valencia, E. Escolar, C. Arredondo, T. Barraza-Zepeda, C. Boeken, B.R. Bran, D. Cabrera, O. Carreira, J.A. Chaieb, M. Conceição, A.A. Derak, M. Ernst, R. Espinosa, C.I. Florentino, A. Gatica, G. Ghiloufi, W. Gómez Gonzalez, S. Gutiérrez, J.R. Hernández, R.M. Huber-Sannwald, E. Jankju, M. Mau, R.L. Miriti, M. Monerris, J. Morici, E. Muchane, M. Naseri, K. Pucheta, E. Ramírez, E. Ramírez, D. Romao, R.L. Tighe, M. Torres, D. Torres Diaz, C. Val, J. Veiga, J.P. Wang, D. Yuan, X. Zaady, E. Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title | Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title_full | Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title_fullStr | Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title_full_unstemmed | Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title_short | Human impacts and aridity differentially alter soil N availability in drylands worldwide |
| title_sort | human impacts and aridity differentially alter soil n availability in drylands worldwide |
| topic | arid zones nitrogen cycle climate ecosystems |
| url | https://hdl.handle.net/10568/72456 |
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