Constraints of Climate and Age on Soil Development in Hawai‘i

Chadwick, Oliver A.; Chorover, Jon; Chadwick, Kristi; Bateman, Jesse Bloom; Slessarev, Eric; Kramer, Marc G.; Thompson, Aaron; Vitousek, Peter M.

doi:10.1007/978-3-030-95921-0_3

Cited by 6 publications

(3 citation statements)

References 154 publications

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“…The ions become available to plants and other organisms as nutrients in the short term, and are lost from the system, hence becoming unavailable over the long term. Although weathering can deplete soil primary minerals and reduce nutrient availability over time, this process typically occurs over thousands to millions of years 5 . Microorganisms such as Bacillus can enhance the rate of silicate weathering by establishing close associations with mineral surfaces and environments and by affecting kinetic parameters (e.g., pH and redox potential).…”

Section: Main Textmentioning

confidence: 99%

Microbially-enhanced silicate weathering in agricultural soils to remove carbon dioxide

Fuenzalida-Meriz,

Timmermann-Aranis,

Wemmer

et al. 2024

Preprint

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Silicate weathering moderates atmospheric CO2 levels over geologic time but proceeds naturally at rates too slow to substantially mitigate anthropogenic emissions. Microorganisms can accelerate silicate weathering and may thereby augment carbon dioxide removal. Here, we demonstrate that Bacillus subtilis strain MP1 can couple silicate dissolution with carbonate precipitation to capture CO2. In culture, MP1 formed biofilm in the presence of feldspar and increased silicate dissolution rates, pH and calcium carbonate formation relative to MP1-free controls. In a soil column experiment, MP1 enhanced inorganic carbon accumulation and the levels of available Ca2+, Mg2+, Fe2+, and Al3+. These results suggest that MP1 was able to accelerate the weathering of silicates naturally present in the soil to release cations. In field experiments, application of MP1 increased soil inorganic carbon and exchangeable calcium, resulting in a gross accrual of 2.02 tonnes inorganic C ha-1 y-1 in the uppermost 30 cm of the soil column. Our results are consistent with a 'trans' calcification type model in which MP1 links silicate dissolution with calcite precipitation via cross-biofilm Ca2+ and proton transport. Furthermore, our results demonstrate the potential for microbially-enhanced silicate weathering in agricultural soils to promote inorganic carbon accumulation and removal of atmospheric CO2.

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Section: Main Textmentioning

confidence: 99%

Microbially-enhanced silicate weathering in agricultural soils to remove carbon dioxide

Fuenzalida-Meriz,

Timmermann-Aranis,

Wemmer

et al. 2024

Preprint

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“…While the fertility of volcanic shield surfaces is defined by the amount of weathering those shield surfaces have been subjected to, and is therefore largely depleted and incapable of supporting intensive rainfed agriculture by ∼700 ky (Vitousek and Farrington, 1997;Porder and Chadwick, 2009;Chadwick et al, 2021), the active erosion and sediment accumulation associated with colluvial slopes has been shown to adequately regenerate soil fertility to support intensive agricultural production (Vitousek et al, 2010). This relationship is reflected in soil type classifications that were selected for modeling intensive colluvial systems, which included "colluvial land, " "stony colluvial land, " and "Kawaihapai" soil series (Cline, 1955) collected from the NRCS soil survey maps, and "alluvium" and "older alluvium" substrates were selected from the USGS digital geologic map.…”

Section: Modeling Approachmentioning

confidence: 99%

Modeling Hawaiian Agroecology: Depicting traditional adaptation to the world's most diverse environment

Lincoln

Haensel

Lee

2023

Front. Sustain. Food Syst.

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Most neglected and underutilized crops were developed and utilized within indigenous agroecological cropping systems. While crop suitability must consider the constraints of the environment, the conditions of agroecological systems and the role of crops within those systems should be considered. Such consideration may guide the implementation of appropriate farming systems specific to different ecosystems and microhabitats. Using the Hawaiian archipelago as a model system of socioecological dynamics, we consider the distribution of agroecological systems and their associated crops to explore how agroecological suitability changes across climate, topography, and soils. We conduct spatial modeling of the potential nature and extent of seven agroecological archetypes based on historical records. The seven spatial models of pre-colonial agroecological systems produced extents distributed across much of the Hawaiian archipelago, with clear adaptive patterns within and across the islands. The distribution of cropping system further affects the appropriateness of crop species application. We argue that the consideration of agroecological niches and associated cropping systems is critical for realizing the potential of underutilized crops and improving the efficiency of contemporary agricultural systems.

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“…Among these factors, the parental material composition and climate are dominant, as topography should not play a major role in the flat lowlands of volcanic islands, and organic activity depends on climate (White, 2005). Also, fast weathering occurs during the first few thousand years of soil formation, which tends to equilibrate due to cation depletion and the precipitation of stable clay minerals, limiting the impact of time, as indicated by several studies (Börker et al, 2019;Chadwick et al, 2022;Rad et al, 2011Rad et al, , 2013Sowards et al, 2018). PSs developed on volcanic rocks have been extensively used to make paleoclimatic reconstructions in different volcanic contexts (e.g., de la Horra et al, 2012;Orr et al, 2021;Sheldon, 2006), including a recent study on São Miguel Island, at the eastern end of the Azores (Hevia-Cruz et al, 2024).…”

Section: Introductionmentioning

confidence: 99%

Regional Variations of the Azores High Across Glacial‐Interglacial Timescales

Hevia‐Cruz,

Sheldon,

Hildenbrand

et al. 2024

Paleoceanog and Paleoclimatol

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The late Quaternary paleoclimate of the North Atlantic region has been widely studied, but the local terrestrial response to broader climatic variations remains underexplored. The Azores Archipelago, influenced by the North Atlantic Oscillation (NAO) and the Azores High, is a strategic target to investigate such interactions. Here, paleosols developed in equilibrium with the atmosphere recorded environmental variations in their geochemistry, and volcanic units sealing those paleosols allow for their precise dating. Clay mineralogical transfer functions from paleosol geochemistry and geochronological data were used to track paleoclimatic and paleoecological changes in this region over the past 1.3 Myr. Mean annual precipitation and air temperature reconstructions range from 620 to 1,520 mm yr−1 and 14–26°C, with the latter tightly coupled with previous reconstructions of sea surface temperature. New K‐Ar ages evidence pulsed soil formation periods under weathering‐favorable wet and warm conditions, suggesting periods of a persistent negative NAO with a weakened or more southern Azores High after glacial Terminations I, II, IV, V, IX, and X. Our humidity province reconstructions indicate a prevailing moist to wet forest under cool temperate to subtropical conditions, with less variability than continental Europe. A rapid paleoecological shift occurred at ∼430 ka in São Miguel Island, probably associated with the high amplitude of Termination V. Paleoecological changes younger than 430 ka could be related to local, not large‐scale, climate changes. Average past precipitations were ∼170 mm yr−1 lower than in the present, which suggests that modern weathering rates are higher than observed in our record.

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Constraints of Climate and Age on Soil Development in Hawai‘i

Cited by 6 publications

References 154 publications

Microbially-enhanced silicate weathering in agricultural soils to remove carbon dioxide

Microbially-enhanced silicate weathering in agricultural soils to remove carbon dioxide

Modeling Hawaiian Agroecology: Depicting traditional adaptation to the world's most diverse environment

Regional Variations of the Azores High Across Glacial‐Interglacial Timescales

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