n-Alkane parameters from a deep sea sediment transect off southwest Africa reflect continental vegetation and climate conditions

Vogts, Angela; Schefuß, Enno; Badewien, Thomas H.; Rullkötter, Jürgen

doi:10.1016/j.orggeochem.2012.03.011

Cited by 91 publications

(50 citation statements)

References 48 publications

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“…Similarly, the ACL shows high values in the last glacial and low values in the Holocene, which also correlates well with the pollen evidence (Brincat et al, 2000). Modern marine surface sediments indicated that the ACL values decreased from the north to south across the Southern Hemisphere with decreased precipitation and increased aridity, which revealed that aridity is the major control factor (Rommerskirchen et al, 2003;Vogts et al, 2012). This is also (Zachos et al, 2001), proxy pCO 2 data (Pagani et al, 2010;Beerling and Royer, 2011;Zhang et al, 2013), North Pacific dust flux from Rea et al (1998), the sketch model for the major Tibet uplift modified from Wan et al (2010), and the major mammals Fauna in the NE Tibet since late Oliogcene (Deng et al, 2013).…”

Section: Discussionsupporting

confidence: 78%

“…supported by the last glacial maximum and Holocene sediment from the N-to-S transect off southern Africa (Eglinton and Eglinton, 2008). Thirdly, ACL may be indirectly related to plant photosynthetic pathways from African vegetation (Vogts et al, 2009) and marine surface sediments (Vogts et al, 2012). For instance, the ACL of C 4 grass shows higher values than the ACL of savana or tropical forest.…”

Section: Discussionmentioning

confidence: 99%

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An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

Peng

Song

et al. 2016

Quaternary International

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

Peng

Song

et al. 2016

Quaternary International

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“…The C 4 plant dendrogram shows that four of the five C 4 are plants characterized by high abundances of n C 27 and n C 29 (Group 2). This C 4 distribution differs from the higher abundances of n C 31 – n C 35 in African C 4 plants (e.g., Bush & McInerney, ; Garcin et al, ; Rommerskirchen et al, ; Vogts et al, ) and could reflect that these Israeli plants are C 4 dicots rather than the dominantly C 4 monocots in the African data set. Group 1 is only composed of the cactus Opuntia ficus‐indica , which is a Crassulacean Acid Metabolism (CAM) plant that shows high abundance of n C 33 and n C 35 , similar to succulents described in Bush and McInerney ().…”

Section: Resultsmentioning

confidence: 75%

Leaf Wax δD and δ¹³C in Soils Record Hydrological and Environmental Information Across a Climatic Gradient in Israel

et al. 2019

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The hydrogen (δDwax) and carbon (δ13Cwax) isotope compositions of long‐chain alkanes derived from plant waxes record hydrological and environmental conditions. However, the integration of plant n‐alkanes into the sedimentary cycle, the variability of δDwax and δ13Cwax in soils, and the paleoclimate applicability in paleosols and archaeological sediments are poorly constrained. We sampled plants and soils across a steep climate transect in Israel to understand how plant type and environmental parameters shape δ13Cwax and δDwax. This transect has three advantages: existence of long‐term precipitation isotopic composition (δDr) records, a single wet season potentially reduces variability due to seasonality, and abandoned Byzantine period (~300–600 AD) agricultural terraces that reduce modern and ancient soil mixing and provide age constraints. We find that soil δ13Cwax is constant (0.4‰, 1σ) across a 500‐ to 1,300‐mm/year rainfall gradient and appears insensitive to rainfall amount, unlike bulk plant δ13C. The absence of a rainfall effect suggests that δ13Cwax may be better suited to reconstructing C3/C4 plant ratios than bulk δ13C. Homologue average soil δDwax significantly correlate with δDr, and the offset between δDr and soil δDwax (εapp) correlates with growing season relative humidity. The seasonality of leaf production accounted for at most ~10% of total plant δDwax variability. Lastly, soil δDwax and δ13Cwax variability is reduced by ~80% relative to plant δDwax and δ13Cwax variability. Our results show that soil δDwax and δ13Cwax faithfully record δDr and landscape C3‐C4 plant contributions and thus support the utility of these proxy data in paleosols and archaeological sites.

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“…; Vogts et al . , ). We found that chain length distributions were not different among the high and low humidity treatments for a given species.…”

Section: Discussionmentioning

confidence: 99%

Predicting leaf wax n‐alkane ²H/¹H ratios: controlled water source and humidity experiments with hydroponically grown trees confirm predictions of Craig–Gordon model

Tipple

Berke

Hambach

et al. 2014

Plant Cell & Environment

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The extent to which both water source and atmospheric humidity affect δ(2)H values of terrestrial plant leaf waxes will affect the interpretations of δ(2)H variation of leaf waxes as a proxy for hydrological conditions. To elucidate the effects of these parameters, we conducted a long-term experiment in which we grew two tree species, Populus fremontii and Betula occidentalis, hydroponically under combinations of six isotopically distinct waters and two different atmospheric humidities. We observed that leaf n-alkane δ(2)H values of both species were linearly related to source water δ(2)H values, but with slope differences associated with differing humidities. When a modified version of the Craig-Gordon model incorporating plant factors was used to predict the δ(2)H values of leaf water, all modelled leaf water values fit the same linear relationship with n-alkane δ(2)H values. These observations suggested a relatively constant biosynthetic fractionation factor between leaf water and n-alkanes. However, our calculations indicated a small difference in the biosynthetic fractionation factor between the two species, consistent with small differences calculated for species in other studies. At present, it remains unclear if these apparent interspecies differences in biosynthetic fractionation reflect species-specific biochemistry or a common biosynthetic fractionation factor with insufficient model parameterization.

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n-Alkane parameters from a deep sea sediment transect off southwest Africa reflect continental vegetation and climate conditions

Cited by 91 publications

References 48 publications

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

Leaf Wax δD and δ¹³C in Soils Record Hydrological and Environmental Information Across a Climatic Gradient in Israel

Predicting leaf wax n‐alkane ²H/¹H ratios: controlled water source and humidity experiments with hydroponically grown trees confirm predictions of Craig–Gordon model

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n-Alkane parameters from a deep sea sediment transect off southwest Africa reflect continental vegetation and climate conditions

Cited by 91 publications

References 48 publications

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

Leaf Wax δD and δ13C in Soils Record Hydrological and Environmental Information Across a Climatic Gradient in Israel

Predicting leaf wax n‐alkane 2H/1H ratios: controlled water source and humidity experiments with hydroponically grown trees confirm predictions of Craig–Gordon model

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Leaf Wax δD and δ¹³C in Soils Record Hydrological and Environmental Information Across a Climatic Gradient in Israel

Predicting leaf wax n‐alkane ²H/¹H ratios: controlled water source and humidity experiments with hydroponically grown trees confirm predictions of Craig–Gordon model