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2. Bioavailability of Macro and Micronutrients Across Global Topsoils: Main Drivers and Global Change Impacts

Author

Ochoa‐Hueso, Raúl, primary, Delgado‐Baquerizo, Manuel, additional, Risch, Anita C., additional, Ashton, Louise, additional, Augustine, David, additional, Bélanger, Nicolas, additional, Bridgham, Scott, additional, Britton, Andrea J., additional, Bruckman, Viktor J., additional, Camarero, J. Julio, additional, Cornelissen, Gerard, additional, Crawford, John A., additional, Dijkstra, Feike A., additional, Diochon, Amanda, additional, Earl, Stevan, additional, Edgerley, James, additional, Epstein, Howard, additional, Felton, Andrew, additional, Fortier, Julien, additional, Gagnon, Daniel, additional, Greer, Ken, additional, Griffiths, Hannah M., additional, Halde, Caroline, additional, Hanslin, Hans Martin, additional, Harris, Lorna I., additional, Hartsock, Jeremy A., additional, Hendrickson, Paul, additional, Hovstad, Knut Anders, additional, Hu, Jia, additional, Jani, Arun D., additional, Kent, Kelcy, additional, Kerdraon‐Byrne, Deirdre, additional, Khalsa, Sat Darshan S., additional, Lai, Derrick Y. F., additional, Lambert, France, additional, LaMontagne, Jalene M., additional, Lavergne, Stéphanie, additional, Lawrence, Beth A., additional, Littke, Kim, additional, Leeper, Abigail C., additional, Licht, Mark A., additional, Liebig, Mark A., additional, Lynn, Joshua S., additional, Maclean, Janet E., additional, Martinsen, Vegard, additional, McDaniel, Marshall D., additional, McIntosh, Anne C. S., additional, Miesel, Jessica R., additional, Miller, Jim, additional, Mulvaney, Michael J., additional, Moreno, Gerardo, additional, Newstead, Laura, additional, Pakeman, Robin J., additional, Pergl, Jan, additional, Pinno, Bradley D., additional, Piñeiro, Juan, additional, Quigley, Kathleen, additional, Radtke, Troy M., additional, Reed, Paul, additional, Rolo, Víctor, additional, Rudgers, Jennifer, additional, Rutherford, P. Michael, additional, Sayer, Emma J., additional, Serrano‐Grijalva, Lilia, additional, Strack, Maria, additional, Sukdeo, Nicole, additional, Taylor, Andy F. S., additional, Truax, Benoit, additional, Tsuji, Leonard J. S., additional, van Gestel, Natasja, additional, Vaness, Brenda M., additional, Van Sundert, Kevin, additional, Vítková, Michaela, additional, Weigel, Robert, additional, Wilton, Meaghan J., additional, Yano, Yuriko, additional, Teen, Ewing, additional, and Bremer, Eric, additional

Published
2023
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3. Bioavailability of Macro and Micronutrients Across Global Topsoils: Main Drivers and Global Change Impacts

Author

Ochoa-Hueso, Raúl, Delgado-Baquerizo, Manuel, Risch, Anita C., Ashton, Louise, Augustine, David, Bélanger, Nicolas, Bridgham, Scott, Britton, A.J., Bruckman, Viktor J., Camarero, Jesús Julio, Cornelissen, Gerard, Crawford John A., Dijkstra, Feike A., Diochon, Amanda, Earl, Stevan, Edgerley, James, Epstein, Howard, Felton, Andrew, Fortier, Julien, Gagnon, Daniel, Greer, Ken, Griffiths, Hannah M, Halde, Caroline, Hanslin, Hans M., Harris, Lorna I., Hartsock, Jeremy, Hendrickson, Paul, Hovstad, Knut Anders, Hu, Jia, Jani. Arun D., Kent, Kelcy, Kerdraon-Byrne, Deirdre, Khalsa, Sat Darshan S., Lai, Derrick Y. F., Lambert, France, LaMontagne, Jalene M., Lavergne, Stéphanie, Lawrence. Beth A., Littke, Kim, Leeper, Abigail C., Licht, Mark A., Liebig, Mark A., Lynn, Joshua S., Maclean, Janet E., Martinsen, Vegard, McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Miller, Jim, Mulvaney, Michael J., Moreno, Gerardo, Newstead, Laura, Pakeman, Robin J., Pergl, Jan, Piñeiro, Juan, Quigley, Kathleen, Radtke, Troy M., Reed, Paul, Rolo, Víctor, Rudgers, Jennifer, Rutherford, P. Michael, Sayer, Emma J., Serrano-Grijalva, Lilia, Strack, Maria, Sukdeo, Nicole, Taylor, Andy F. S., Truax, Benoit, Tsuji, Leonard J. S., Van Gestel, Natasja, Vaness, Brenda M., Van Sundert, Kevin, Vitkova, Michaela, Weigel, R., Wilton, Meaghan, Yano, Yuriko, Teen, Ewing, Bremer, Eric, Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Ministerio de Universidades (España), European Commission, Junta de Andalucía, Fundación Biodiversidad, National Science Foundation Macrosystems Biology, Belgian American Educational Foundation, Fulbright Program and the Fund for Scientific Research-Flanders, European Agricultural Fund for Rural Development, Czech Science Foundation, Czech Academy of Sciences, National Science Foundation (US), National Institute of Food and Agriculture (US), DePaul University, Huron Mountain Wildlife Foundation, Ochoa-Hueso, Raúl, Delgado-Baquerizo, Manuel, Britton, A.J., Camarero, Jesús Julio, Earl, Stevan, Epstein, Howard, Felton, Andrew, Halde, Caroline, Hanslin, Hans M., Harris, Lorna I., Hartsock, Jeremy, Hovstad, Knut Anders, Khalsa, Sat Darshan S., LaMontagne, Jalene M., Lavergne, Stéphanie, Littke, Kim, Licht, Mark A., McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Moreno, Gerardo, Pakeman, Robin J., Pinno, Bradley D., Piñeiro, Juan, Rolo, Víctor, Rutherford, P. Michael, Sayer, Emma J., Van Sundert, Kevin, Vitkova, Michaela, Weigel, R., and Wilton, Meaghan

Abstract

14 páginas.- 6 figuras.- 53 referencias, Understanding the chemical composition of our planet's crust was one of the biggest questions of the 20th century. More than 100 years later, we are still far from understanding the global patterns in the bioavailability and spatial coupling of elements in topsoils worldwide, despite their importance for the productivity and functioning of terrestrial ecosystems. Here, we measured the bioavailability and coupling of thirteen macro- and micronutrients and phytotoxic elements in topsoils (3–8 cm) from a range of terrestrial ecosystems across all continents (∼10,000 observations) and in response to global change manipulations (∼5,000 observations). For this, we incubated between 1 and 4 pairs of anionic and cationic exchange membranes per site for a mean period of 53 days. The most bioavailable elements (Ca, Mg, and K) were also amongst the most abundant in the crust. Patterns of bioavailability were biome-dependent and controlled by soil properties such as pH, organic matter content and texture, plant cover, and climate. However, global change simulations resulted in important alterations in the bioavailability of elements. Elements were highly coupled, and coupling was predictable by the atomic properties of elements, particularly mass, mass to charge ratio, and second ionization energy. Deviations from the predictable coupling-atomic mass relationship were attributed to global change and agriculture. Our work illustrates the tight links between the bioavailability and coupling of topsoil elements and environmental context, human activities, and atomic properties of elements, thus deeply enhancing our integrated understanding of the biogeochemical connections that underlie the productivity and functioning of terrestrial ecosystems in a changing world., We acknowledge the following people as additional data contributors: Drs. G. Blume-Werry, V. Bruckman, J. Buss, S. Collins, E. Dorrepaal, K.N. Egger, J. Fridley, Gibson-Roy, R. Harrison, J. Heberling, K. Helsen, E. Hinman, A. K olstad, N. Lemoine, M. Lesser, E. Li, S. E. Macdonald, E. Mallory, E. Massicotte, H.B. Massicotte, T. Moore, C. Morris, L. Nijs, M. Smith, Suojala-Ahlfors, E. Thiffault, K. Trepanier, R. Uusitalo, L. Van Langenhove, S. Vicca, F. Wang, M. Werner, K. White and S. Wilson. R.O.H. was funded by the Ramón y Cajal program of the MICINN (RYC-2017 22032), by the R&D Project of the Ministry of Science and Innovation PID2019-106004RA-I00 funded by MCIN/AEI/10.13039/501100011033, by the program José Castillejo” of the “Ministry of Universities” (CAS21/00125), by a project of the European Regional Development Fund (FEDER) and the Ministry of Economic Transformation, Industry, Knowledge and Universities of the Junta de Andalucía (ERDF Andalucía 2014–2020 Thematic objective “01—Reinforcement of research, technological development and innovation”): P20_00323 (FUTURE-VINES), by the European Agricultural Fund for Rural Development (EAFRD) through the “Aid to operational groups of the European Association of Innovation (AEI) in terms of agricultural productivity and sustainability,” Reference: GOPC-CA-20-0001, and from Fundación Biodiversidad (SOILBIO). M.D-B. was supported by a Ramón y Cajal Grant (RYC2018-025483-I), a project from the Spanish Ministry of Science and Innovation (PID2020-115813RA-I00), and a project PAIDI 2020 from the Junta de Andalucía (P20_00879). JP acknowl-edges funding from MICINN (RYC–2021–033454). S. Bridgham and P. Reed were supported from National Science Foundation Macrosystems Biology Grant 1340847. KVS acknowledges support from the Belgian American Educational Foundation (Paul Vernel Fellow), the Fulbright Program and the Fund for Scientific Research-Flanders. J. Pergl and M. Vítková were partly supported by 17-19025S, EXPRO Grant 19-28807X (Czech Science Foundation), BiodivClim Call 2019 (Grant TACR SS70010001) and long-term research development project RVO 67985939 (Czech Academy of Sciences). Natasja van Gestel was funded by the National Science Foundation Grant 1643871. Stevan Earl was partially supported by the National Science Foundation under Grant DEB-2224662, Central Arizona-Phoenix Long-Term Ecological Research Program (CAP LTER). Lilia Serrano-Grijalva has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 890874. Kevin van Sundert acknowledges support from the Fund for Scientific Research-Flanders. Yuriko Yano acknowledges USDA, National Institute of Food and Agriculture Grant, Award number 2015-67020-23454. A. Leeper, B. Lawrence, and J. LaMontagne acknowledge support from National Science Foundation Grant DEB-1745496, the University Research Council Collaborative Grant from DePaul University, and the Huron Mountain Wildlife Foundation.

Published
2023

4. Bioavailability of macro and micronutrients across global topsoils : Main drivers and global change impacts

Author

Ochoa‐Hueso, Raúl, Delgado‐Baquerizo, Manuel, Risch, Anita C., Ashton, Louise, Augustine, David, Bélanger, Nicolas, Bridgham, Scott, Britton, Andrea J., Bruckman, Viktor J., Camarero, J. Julio, Cornelissen, Gerard, Crawford, John A., Dijkstra, Feike A., Diochon, Amanda, Earl, Stevan, Edgerley, James, Epstein, Howard, Felton, Andrew, Fortier, Julien, Gagnon, Daniel, Greer, Ken, Griffiths, Hannah M, Halde, Caroline, Hanslin, Hans Martin, Harris, Lorna I., Hartsock, Jeremy A., Hendrickson, Paul, Hovstad, Knut Anders, Hu, Jia, Jani, Arun D., Kent, Kelcy, Kerdraon‐Byrne, Deirdre, Khalsa, Sat Darshan S., Lai, Derrick Y.F., Lambert, France, LaMontagne, Jalene M., Lavergne, Stéphanie, Lawrence, Beth A., Littke, Kim, Leeper, Abigail C., Licht, Mark A., Liebig, Mark A., Lynn, Joshua S., Maclean, Janet E., Martinsen, Vegard, McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Miller, Jim, Mulvaney, Michael J., Moreno, Gerardo, Newstead, Laura, Pakeman, Robin J., Pergl, Jan, Pinno, Bradley D., Piñeiro, Juan, Quigley, Kathleen, Radtke, Troy M., Reed, Paul, Rolo, Víctor, Rudgers, Jennifer, Rutherford, P. Michael, Sayer, Emma J., Serrano‐Grijalva, Lilia, Strack, Maria, Sukdeo, Nicole, Taylor, Andy F.S., Truax, Benoit, Tsuji, Leonard J. S., van Gestel, Natasja, Vaness, Brenda M., Van Sundert, Kevin, Vítková, Michaela, Weigel, Robert, Wilton, Meaghan J., Yano, Yuriko, Teen, Ewing, Bremer, Eric, Ochoa‐Hueso, Raúl, Delgado‐Baquerizo, Manuel, Risch, Anita C., Ashton, Louise, Augustine, David, Bélanger, Nicolas, Bridgham, Scott, Britton, Andrea J., Bruckman, Viktor J., Camarero, J. Julio, Cornelissen, Gerard, Crawford, John A., Dijkstra, Feike A., Diochon, Amanda, Earl, Stevan, Edgerley, James, Epstein, Howard, Felton, Andrew, Fortier, Julien, Gagnon, Daniel, Greer, Ken, Griffiths, Hannah M, Halde, Caroline, Hanslin, Hans Martin, Harris, Lorna I., Hartsock, Jeremy A., Hendrickson, Paul, Hovstad, Knut Anders, Hu, Jia, Jani, Arun D., Kent, Kelcy, Kerdraon‐Byrne, Deirdre, Khalsa, Sat Darshan S., Lai, Derrick Y.F., Lambert, France, LaMontagne, Jalene M., Lavergne, Stéphanie, Lawrence, Beth A., Littke, Kim, Leeper, Abigail C., Licht, Mark A., Liebig, Mark A., Lynn, Joshua S., Maclean, Janet E., Martinsen, Vegard, McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Miller, Jim, Mulvaney, Michael J., Moreno, Gerardo, Newstead, Laura, Pakeman, Robin J., Pergl, Jan, Pinno, Bradley D., Piñeiro, Juan, Quigley, Kathleen, Radtke, Troy M., Reed, Paul, Rolo, Víctor, Rudgers, Jennifer, Rutherford, P. Michael, Sayer, Emma J., Serrano‐Grijalva, Lilia, Strack, Maria, Sukdeo, Nicole, Taylor, Andy F.S., Truax, Benoit, Tsuji, Leonard J. S., van Gestel, Natasja, Vaness, Brenda M., Van Sundert, Kevin, Vítková, Michaela, Weigel, Robert, Wilton, Meaghan J., Yano, Yuriko, Teen, Ewing, and Bremer, Eric

Abstract

Understanding the chemical composition of our planet's crust was one of the biggest questions of the 20th century. More than 100 years later, we are still far from understanding the global patterns in the bioavailability and spatial coupling of elements in topsoils worldwide, despite their importance for the productivity and functioning of terrestrial ecosystems. Here, we measured the bioavailability and coupling of thirteen macro‐ and micronutrients and phytotoxic elements in topsoils (3–8 cm) from a range of terrestrial ecosystems across all continents (∼10,000 observations) and in response to global change manipulations (∼5,000 observations). For this, we incubated between 1 and 4 pairs of anionic and cationic exchange membranes per site for a mean period of 53 days. The most bioavailable elements (Ca, Mg, and K) were also amongst the most abundant in the crust. Patterns of bioavailability were biome‐dependent and controlled by soil properties such as pH, organic matter content and texture, plant cover, and climate. However, global change simulations resulted in important alterations in the bioavailability of elements. Elements were highly coupled, and coupling was predictable by the atomic properties of elements, particularly mass, mass to charge ratio, and second ionization energy. Deviations from the predictable coupling‐atomic mass relationship were attributed to global change and agriculture. Our work illustrates the tight links between the bioavailability and coupling of topsoil elements and environmental context, human activities, and atomic properties of elements, thus deeply enhancing our integrated understanding of the biogeochemical connections that underlie the productivity and functioning of terrestrial ecosystems in a changing world.

Published
2023

5. Bioavailability of Macro and Micronutrients Across Global Topsoils: Main Drivers and Global Change Impacts

Author

Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Ministerio de Universidades (España), European Commission, Junta de Andalucía, Fundación Biodiversidad, Belgian American Educational Foundation, Research Foundation - Flanders, European Agricultural Fund for Rural Development, Czech Science Foundation, Academy of Sciences of the Czech Republic, National Science Foundation (US), National Institute of Food and Agriculture (US), DePaul University, Huron Mountain Wildlife Foundation, Ochoa-Hueso, Raúl [0000-0002-1839-6926], Delgado-Baquerizo, Manuel [0000-0002-6499-576X], Britton, A.J. [0000-0002-0603-7432], Camarero, Jesús Julio [0000-0003-2436-2922], Earl, Stevan [0000-0002-4465-452X], Epstein, Howard [0000-0003-2817-4486], Felton, Andrew [0000-0002-1533-6071], Halde, Caroline [0000-0002-4974-1411], Hanslin, Hans M. [0000-0002-3224-2368], Harris, Lorna I. [0000-0002-2637-4030], Hartsock, Jeremy [0000-0002-0468-2630], Hovstad, Knut Anders [0000-0002-7108-0787], Khalsa, Sat Darshan S. [0000-0003-1995-2469], LaMontagne, Jalene M. [0000-0001-7713-8591], Lavergne, Stéphanie [0000-0002-7197-107X], Littke, Kim [0000-0002-0187-1663], Licht, Mark A. [0000-0001-6640-7856], McDaniel, Marshall D. [0000-0001-6267-7293], McIntosh, Anne C. S. [0000-0002-7802-2205], Miesel, Jessica R. [0000-0001-7446-464X], Moreno, Gerardo [0000-0001-8053-2696], Pakeman, Robin J. [0000-0001-6248-4133], Pinno, Bradley D., Piñeiro, Juan [0000-0002-0825-4174], Rolo, Víctor [0000-0001-5854-9512], Rutherford, P. Michael [0000-0002-5065-7700], Sayer, Emma J. [0000-0002-3322-4487], Van Sundert, Kevin [0000-0001-6180-3075], Vitkova, Michaela [0000-0002-2848-7725], Weigel, R. [0000-0001-9685-6783], Wilton, Meaghan [0000-0003-2915-3863], Ochoa-Hueso, Raúl, Delgado-Baquerizo, Manuel, Risch, Anita C., Ashton, Louise, Augustine, David, Bélanger, Nicolas, Bridgham, Scott, Britton, A.J., Bruckman, Viktor J., Camarero, Jesús Julio, Cornelissen, Gerard, Crawford John A., Dijkstra, Feike A., Diochon, Amanda, Earl, Stevan, Edgerley, James, Epstein, Howard, Felton, Andrew, Fortier, Julien, Gagnon, Daniel, Greer, Ken, Griffiths, Hannah M, Halde, Caroline, Hanslin, Hans M., Harris, Lorna I., Hartsock, Jeremy, Hendrickson, Paul, Hovstad, Knut Anders, Hu, Jia, Jani. Arun D., Kent, Kelcy, Kerdraon-Byrne, Deirdre, Khalsa, Sat Darshan S., Lai, Derrick Y. F., Lambert, France, LaMontagne, Jalene M., Lavergne, Stéphanie, Lawrence. Beth A., Littke, Kim, Leeper, Abigail C., Licht, Mark A., Liebig, Mark A., Lynn, Joshua S., Maclean, Janet E., Martinsen, Vegard, McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Miller, Jim, Mulvaney, Michael J., Moreno, Gerardo, Newstead, Laura, Pakeman, Robin J., Pergl, Jan, Piñeiro, Juan, Quigley, Kathleen, Radtke, Troy M., Reed, Paul, Rolo, Víctor, Rudgers, Jennifer, Rutherford, P. Michael, Sayer, Emma J., Serrano-Grijalva, Lilia, Strack, Maria, Sukdeo, Nicole, Taylor, Andy F. S., Truax, Benoit, Tsuji, Leonard J. S., Van Gestel, Natasja, Vaness, Brenda M., Van Sundert, Kevin, Vitkova, Michaela, Weigel, R., Wilton, Meaghan, Yano, Yuriko, Teen, Ewing, Bremer, Eric, Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Ministerio de Universidades (España), European Commission, Junta de Andalucía, Fundación Biodiversidad, Belgian American Educational Foundation, Research Foundation - Flanders, European Agricultural Fund for Rural Development, Czech Science Foundation, Academy of Sciences of the Czech Republic, National Science Foundation (US), National Institute of Food and Agriculture (US), DePaul University, Huron Mountain Wildlife Foundation, Ochoa-Hueso, Raúl [0000-0002-1839-6926], Delgado-Baquerizo, Manuel [0000-0002-6499-576X], Britton, A.J. [0000-0002-0603-7432], Camarero, Jesús Julio [0000-0003-2436-2922], Earl, Stevan [0000-0002-4465-452X], Epstein, Howard [0000-0003-2817-4486], Felton, Andrew [0000-0002-1533-6071], Halde, Caroline [0000-0002-4974-1411], Hanslin, Hans M. [0000-0002-3224-2368], Harris, Lorna I. [0000-0002-2637-4030], Hartsock, Jeremy [0000-0002-0468-2630], Hovstad, Knut Anders [0000-0002-7108-0787], Khalsa, Sat Darshan S. [0000-0003-1995-2469], LaMontagne, Jalene M. [0000-0001-7713-8591], Lavergne, Stéphanie [0000-0002-7197-107X], Littke, Kim [0000-0002-0187-1663], Licht, Mark A. [0000-0001-6640-7856], McDaniel, Marshall D. [0000-0001-6267-7293], McIntosh, Anne C. S. [0000-0002-7802-2205], Miesel, Jessica R. [0000-0001-7446-464X], Moreno, Gerardo [0000-0001-8053-2696], Pakeman, Robin J. [0000-0001-6248-4133], Pinno, Bradley D., Piñeiro, Juan [0000-0002-0825-4174], Rolo, Víctor [0000-0001-5854-9512], Rutherford, P. Michael [0000-0002-5065-7700], Sayer, Emma J. [0000-0002-3322-4487], Van Sundert, Kevin [0000-0001-6180-3075], Vitkova, Michaela [0000-0002-2848-7725], Weigel, R. [0000-0001-9685-6783], Wilton, Meaghan [0000-0003-2915-3863], Ochoa-Hueso, Raúl, Delgado-Baquerizo, Manuel, Risch, Anita C., Ashton, Louise, Augustine, David, Bélanger, Nicolas, Bridgham, Scott, Britton, A.J., Bruckman, Viktor J., Camarero, Jesús Julio, Cornelissen, Gerard, Crawford John A., Dijkstra, Feike A., Diochon, Amanda, Earl, Stevan, Edgerley, James, Epstein, Howard, Felton, Andrew, Fortier, Julien, Gagnon, Daniel, Greer, Ken, Griffiths, Hannah M, Halde, Caroline, Hanslin, Hans M., Harris, Lorna I., Hartsock, Jeremy, Hendrickson, Paul, Hovstad, Knut Anders, Hu, Jia, Jani. Arun D., Kent, Kelcy, Kerdraon-Byrne, Deirdre, Khalsa, Sat Darshan S., Lai, Derrick Y. F., Lambert, France, LaMontagne, Jalene M., Lavergne, Stéphanie, Lawrence. Beth A., Littke, Kim, Leeper, Abigail C., Licht, Mark A., Liebig, Mark A., Lynn, Joshua S., Maclean, Janet E., Martinsen, Vegard, McDaniel, Marshall D., McIntosh, Anne C. S., Miesel, Jessica R., Miller, Jim, Mulvaney, Michael J., Moreno, Gerardo, Newstead, Laura, Pakeman, Robin J., Pergl, Jan, Piñeiro, Juan, Quigley, Kathleen, Radtke, Troy M., Reed, Paul, Rolo, Víctor, Rudgers, Jennifer, Rutherford, P. Michael, Sayer, Emma J., Serrano-Grijalva, Lilia, Strack, Maria, Sukdeo, Nicole, Taylor, Andy F. S., Truax, Benoit, Tsuji, Leonard J. S., Van Gestel, Natasja, Vaness, Brenda M., Van Sundert, Kevin, Vitkova, Michaela, Weigel, R., Wilton, Meaghan, Yano, Yuriko, Teen, Ewing, and Bremer, Eric

Abstract

Understanding the chemical composition of our planet's crust was one of the biggest questions of the 20th century. More than 100 years later, we are still far from understanding the global patterns in the bioavailability and spatial coupling of elements in topsoils worldwide, despite their importance for the productivity and functioning of terrestrial ecosystems. Here, we measured the bioavailability and coupling of thirteen macro- and micronutrients and phytotoxic elements in topsoils (3–8 cm) from a range of terrestrial ecosystems across all continents (∼10,000 observations) and in response to global change manipulations (∼5,000 observations). For this, we incubated between 1 and 4 pairs of anionic and cationic exchange membranes per site for a mean period of 53 days. The most bioavailable elements (Ca, Mg, and K) were also amongst the most abundant in the crust. Patterns of bioavailability were biome-dependent and controlled by soil properties such as pH, organic matter content and texture, plant cover, and climate. However, global change simulations resulted in important alterations in the bioavailability of elements. Elements were highly coupled, and coupling was predictable by the atomic properties of elements, particularly mass, mass to charge ratio, and second ionization energy. Deviations from the predictable coupling-atomic mass relationship were attributed to global change and agriculture. Our work illustrates the tight links between the bioavailability and coupling of topsoil elements and environmental context, human activities, and atomic properties of elements, thus deeply enhancing our integrated understanding of the biogeochemical connections that underlie the productivity and functioning of terrestrial ecosystems in a changing world.

Published
2023

19. Grapefruit Production in Open Hydroponics System.

Author

Ferrarezi, Rhuanito S., Nogueira, Thiago A. R., Jani, Arun D., Wright, Alan L., Ritenour, Mark A., and Burton, Randy

Subjects
GRAPEFRUIT, HYDROPONICS, FERTILIZATION (Biology), PLANTING, ROOTSTOCKS
Abstract

Conventionallymanaged citrus orchards can bemodified to incorporate advanced horticultural practices such as higher plant density and efficient water and fertilizer application known as open hydroponics system (OHS) to increase productivity under Huanglongbing (HLB) endemic conditions. A field studywas conducted from2013 to 2018 to evaluate the effect of an OHS on "Ray Ruby" grapefruit (RR) production under HLB-endemic conditions. We tested a combination of different rootstocks [Sour orange (RR/SO) and US-897 (RR/897)], tree planting densities [standard (STD, 358 trees per ha) and high density staggered (HDS, 953 trees per ha)], fertilization methods (dry granular--dry and fertigation--fert), and irrigation systems (double driplines--DD and microsprinkler--MS), arranged in five treatments: RR/SO_STD_dry_MS, RR/SO_HDS_fert_DD, RR/897_HDS_fert_MS, RR/897_HDS_fert_DD, and RR/SO_HDS_fert_MS. All trees were infected by Candidatus Liberibacter asiaticus five years after planting. Trunk diameter and canopy volume increased over time and were higher under RR/SO_STD_dry_MS compared to other treatments. Total fruit number increased in 2016/17 compared to other seasons; however, 65% of fruit were classified as small (<100 mm). Fruit produced under RR/897_HDS_fert_DD had the highest amount (79%) of adequate size fruit (100-117 mm) compared to other treatments. Fruit yield was similar for both rootstocks planted at HDS using DD andMS fertigation, and 67% higher than the standard treatment (RR/SO_STD_dry_MS). Soluble solid contents (SSC), titratable acidity, and SSC-to-titratable acidity ratio were not affected by the treatments. HDS planting resulted in higher fruit yield, irrespective of rootstock and irrigation system, representing an important advance in grapefruit production. Overall, our results demonstrated that production of grapefruit in high-density using OHS can be used by citrus growers who aim to make the best water and fertilizer management under HLB-endemic conditions. [ABSTRACT FROM AUTHOR]

Published
2020
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20. Peanut residues supply minimal plant‐available nitrogen on a major soil series in the USA peanut basin.

Author

Jani, Arun D., Mulvaney, Michael J., Balkcom, Kipling S., Wood, Charles Wesley, Jordan, David L., Wood, Brenda H., Devkota, Pratap, and Aitkenhead, Matt

Subjects
PEANUTS, NITROGEN in soils, CONSERVATION tillage, SOIL depth, CROP growth, MINERALIZATION
Abstract

Field observations have shown that a substantial portion of peanut leaves abscise in windrows during pod curing, leading to an uneven distribution of leaves and stems when intact residues are spread during harvest. Possible differences in nitrogen (N) mineralization rates between peanut leaf and stem residues may lead to spatial and temporal variability in available N during subsequent crops. The objective of this study was to quantify N mineralization in soil amended with different peanut residue components under simulated conventional and conservation tillage practices. A 252‐day microlysimeter incubation was conducted in which peanut leaves, stems and a 1:1 mixture of leaves:stems from three varieties were incorporated or placed on the soil surface to simulate conventional or conservation tillage, respectively. Soils were periodically leached to assess N mineralization compared with a soil‐only control. Nitrogen mineralization was only affected by residue component. Averaged over variety and residue placement, soil amended with leaves mineralized 10% more N relative to the control or soil containing stems. It was estimated that leaves supplied 25 kg N ha−1 over 252 days at 0–15 cm soil depth, which would likely be insufficient to induce a yield response by a subsequent crop. This study suggests that uneven distribution of peanut leaf and stem residues following harvest causes only minor spatial and temporal variability in available N during subsequent crop growth. These results support the growing body of evidence indicating that peanut residue N contributions to subsequent crops are negligible in the peanut basin of the south‐eastern USA. [ABSTRACT FROM AUTHOR]

Published
2020
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