Zobrazeno 1 - 10
of 243
pro vyhledávání: '"Oliver A Chadwick"'
Autor:
Kealohanuiopuna M Kinney, Gregory P Asner, Susan Cordell, Oliver A Chadwick, Katherine Heckman, Sara Hotchkiss, Marjeta Jeraj, Ty Kennedy-Bowdoin, David E Knapp, Erin J Questad, Jarrod M Thaxton, Frank Trusdell, James R Kellner
Publikováno v:
PLoS ONE, Vol 10, Iss 6, p e0123995 (2015)
We used measurements from airborne imaging spectroscopy and LiDAR to quantify the biophysical structure and composition of vegetation on a dryland substrate age gradient in Hawaii. Both vertical stature and species composition changed during primary
Externí odkaz:
https://doaj.org/article/d46ec1555904427a83178db8fa377bfc
Autor:
Julie Tolu, Sylvain Bouchet, Julian Helfenstein, Olivia Hausheer, Sarah Chékifi, Emmanuel Frossard, Federica Tamburini, Oliver A. Chadwick, Lenny H. E. Winkel
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-16 (2022)
Selenium is essential for human health and mainly delivered via terrestrial foodstuffs. An advanced characterization of selenium chemical forms shows that organic matter increases its accumulation in soils but could limit its supply to plants
Externí odkaz:
https://doaj.org/article/b445ae50565a4e2eb2d9237fb11e8399
Publikováno v:
Frontiers in Forests and Global Change, Vol 4 (2021)
Models suggest that rock-derived nitrogen (N) inputs are of global importance to ecosystem N budgets; however, field studies demonstrating the significance of rock N inputs are rare. We examined rock-derived N fluxes in soils derived from sedimentary
Externí odkaz:
https://doaj.org/article/d290acfb64164290b83495798702d225
Autor:
Julian Helfenstein, Federica Tamburini, Christian von Sperber, Michael S. Massey, Chiara Pistocchi, Oliver A. Chadwick, Peter M. Vitousek, Ruben Kretzschmar, Emmanuel Frossard
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Our understanding of phosphorus (P) cycling in soils, a basis for many ecosystem services, has been limited by the complexity of P forms and processes. Here the authors use spectroscopic and isotopic techniques to estimate turnover times of P pools a
Externí odkaz:
https://doaj.org/article/b7ddb11eb3894840be3ee72da4f65fbe
Autor:
Ke Wen, Oliver A. Chadwick, Peter M. Vitousek, Elizabeth L. Paulus, Gautier Landrot, Ryan V. Tappero, John P. Kaszuba, George W. Luther, Zimeng Wang, Benjamin J. Reinhart, Mengqiang Zhu
Publikováno v:
Environmental Science & Technology. 57:730-740
Manganese (Mn) exists as Mn(II), Mn(III), or Mn(IV) in soils, and the Mn oxidation state controls the roles of Mn in numerous environmental processes. However, the variations of Mn oxidation states with climate remain unknown. We determined the Mn ox
Publikováno v:
Geoarchaeology. 38:20-34
Publikováno v:
Geochimica et Cosmochimica Acta. 333:39-55
Autor:
Cedric O. Puleston, Thegn N. Ladefoged, Sonia Haoa, Oliver A. Chadwick, Peter M. Vitousek, Christopher M. Stevenson
Publikováno v:
Frontiers in Ecology and Evolution, Vol 6 (2018)
Externí odkaz:
https://doaj.org/article/6ee7875f1bd346749700ceca43b6cd71
Publikováno v:
Biogeochemistry. 157:1-13
As rock-derived primary minerals weather to form soil, they create reactive, poorly crystalline minerals that bind and store organic carbon. By implication, the abundance of primary minerals in soil might influence the abundance of poorly crystalline
Autor:
Zhi-Qi Zhao, Karen L. Vaughan, Yongfeng Hu, Zhuojun Zhang, Chao Liang, Mengqiang Zhu, Cong-Qiang Liu, Oliver A. Chadwick
Publikováno v:
Geochimica et Cosmochimica Acta. 310:1-18
Phosphorus (P) availability in soils controls critical functions and properties of terrestrial ecosystems. Vertical distribution patterns of P concentration and speciation in soil profiles provide historical records of how pedogenic processes redistr