Show simple item record

Title

Human impacts and aridity differentially alter soil N availability in drylands worldwide

dc.contributor.authorDelgado Baquerizo, Manuel
dc.contributor.authorMaestre, Fernando T
dc.contributor.authorGallardo, Antonio
dc.contributor.authorEldridge, David J.
dc.contributor.authorSoliveres Codina, Santiago
dc.contributor.authorBowker, Matthew A.
dc.contributor.authorPrado Comesaña, Ana
dc.contributor.authorGaitán, Juan
dc.contributor.authorQuero-Perez, Jose Luis
dc.contributor.authorOchoa, Victoria
dc.contributor.authorGozalo, Beatriz
dc.contributor.authorGarcía Gómez, Miguel
dc.contributor.authorGarcía Palacios, Pablo
dc.contributor.authorBerdugo, Miguel
dc.contributor.authorValencia, Enrique
dc.contributor.authorEscolar, Cristina
dc.contributor.authorArredondo Moreno, José Tulio
dc.contributor.authorBarraza Zepeda, Claudia Elizabeth
dc.contributor.authorBoeken, Bertrand R.
dc.contributor.authorBran, Donaldo Eduardo
dc.contributor.authorCabrera, Omar
dc.contributor.authorCarreira, José Antonio
dc.contributor.authorChaieb, Mohamed
dc.contributor.authorConceicao, Abel Augusto
dc.contributor.authorDerak, Mchich
dc.contributor.authorErnst, Ricardo
dc.contributor.authorEspinosa, Carlos Ivan
dc.contributor.authorFlorentino de Andreu, Adriana
dc.contributor.authorGatica, Gabriel M.
dc.contributor.authorGhiloufi, Wahida
dc.contributor.authorGómez González, Susana
dc.contributor.authorGutiérrez Camus, Julio Roberto
dc.contributor.authorHernández, Rosa Mary
dc.contributor.authorHuber-Sannwald, Elisabeth
dc.contributor.authorJankju, Mohammad
dc.contributor.authorMau, Rebecca L
dc.contributor.authorMiriti, Maria N.
dc.contributor.authorMonerris, Jorge
dc.contributor.authorMorici, Ernesto F.A.
dc.contributor.authorMuchane, Muchai N.
dc.contributor.authorNaseri, Kamal
dc.contributor.authorPucheta, Eduardo
dc.contributor.authorRamírez, Elizabeth
dc.contributor.authorRamirez Collantes, David A.
dc.contributor.authorRomao, Roberto Lisboa
dc.contributor.authorTighe, Matthew K.
dc.contributor.authorTorres, Duilio Gilberto
dc.contributor.authorTorres Díaz, Cristian
dc.contributor.authorVal, James
dc.contributor.authorVeiga, José Pablo
dc.contributor.authorWang, Deli
dc.contributor.authorYuan, Xia
dc.contributor.authorZaady, Eli
dc.date.accessioned2019-10-09T22:08:38Z
dc.date.available2019-10-09T22:08:38Z
dc.date.issued2016
dc.identifier.citationDelgado‐Baquerizo, M., Maestre, F.T., Gallardo, A., Eldridge, D.J., Soliveres, S., Bowker, M.A., Prado‐Comesaña, A., Gaitán, J., Quero, J.L., Ochoa, V., Gozalo, B., García‐Gómez, 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‐González, 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‐Collantes, D.A., Romão, R.L., Tighe, M., Torres, D., Torres‐Díaz, C., Val, J., Veiga, J. P., Wang, D., Yuan, X. and Zaady, E. (2016), Global change drivers differentially alter N availability. Global Ecology and Biogeography, 25: 36-45. doi:10.1111/geb.12382
dc.identifier.urihttp://hdl.handle.net/11627/5242
dc.description.abstract"Aims 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. Location Two hundred and twenty-four dryland sites from all continents except Antarctica widely differing in their environmental conditions and human influence. Methods 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. Results 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. Main conclusions 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."
dc.publisherWiley
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAridity
dc.subjectDepolymerization
dc.subjectGlobal change
dc.subjectHuman impacts
dc.subjectMineralization
dc.subjectN cycle
dc.subject.classificationGEOGRAFÍA FÍSICA
dc.titleHuman impacts and aridity differentially alter soil N availability in drylands worldwide
dc.typearticle
dc.identifier.doihttps://doi.org/10.1111/geb.12382
dc.rights.accessAcceso Abierto


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional