@article {kruger_sediment_2022,
	title = {Sediment organic matter compositional changes in a tropical rift lake as a function of water depth and distance from shore},
	journal = {Organic Geochemistry},
	year = {2022},
	month = {11/2022},
	pages = {104527},
	abstract = {Little is known of modern carbon cycling in East African rift lakes. These large tropical systems with anoxic bottom waters can act as test cases for carbon cycling under future climate change scenarios as well as key sediment repositories for paleolimnology studies and fossil fuel generation. This study is the first to combine stable and radiocarbon isotopic information on bulk sediment and biomarkers (n-alcohols) in an African rift lake by investigating surface sediments collected on a nearshore to offshore transect in northern Lake Malawi. This study is also the first to report radiocarbon content in water column particulate organic, dissolved organic and inorganic carbon from an African rift lake. General surface-sediment trends with increasing water depth were an increase in \%TOC, and decreases in grain size, δ13C and C/N. Carbon radioisotope analyses showed that bulk sedimentary organic matter was modern across the transect. Biomarker data indicated a primarily aquatic origin for sedimentary organic matter at offshore sites; terrestrial material dominated the n-alcohol signature closest to the shore. Protokerogen stable isotope signatures were similar, and radiocarbon was somewhat depleted relative to bulk sediment organic matter. As compared to bulk organic matter, lipids were 13C-depleted throughout the sampling transect and 14C-depleted at the most nearshore location. This indicates an aged lipid carbon source and likely significant diagenetic alteration of modern sources prior to deposition in nearshore sediments, perhaps a combination of soil erosion, in-river processing, sediment resuspension and mobilization, and preferential degradation of younger organic matter in the oxic nearshore region.},
	keywords = {-Alcohols, C/N ratio, carbon isotopes, Lake Malawi, Protokerogen, radiocarbon, Sedimentary organic carbon},
	issn = {0146-6380},
	doi = {10.1016/j.orggeochem.2022.104527},
	url = {https://www.sciencedirect.com/science/article/pii/S0146638022001619},
	author = {Kruger, Brittany R. and Werne, Josef P. and Minor, Elizabeth C.}
}
@article {2842,
	title = {Mid-late Holocene rainfall variation in Taiwan: A high-resolution multi-proxy record unravels the dual influence of the Asian monsoon and ENSO},
	journal = {Palaeogeography, Palaeoclimatology, Palaeoecology},
	volume = {516},
	year = {2019},
	month = {Jan-02-2019},
	pages = {139 - 151},
	abstract = {Taiwan is particularly sensitive to changes in monsoonal precipitation and to typhoon-induced heavy precipitation events, however, rainfall variability in Taiwan on centennial and millennial time scales during the Holocene has not been well understood. This study describes mid-Holocene rainfall features of Taiwan based on pollen, total organic carbon (TOC), total nitrogen (TN), and C/N ratio records of core MD05-2908. The step-wise increase in sedimentation rate, fern spore percentage and concentration, TOC content, and C/N ratio suggests an increasing terrestrial material supply due to the intensified rainfall in Taiwan since 6800 cal. yr BP. This rainfall pattern shows an inverse pattern to the decreasing East Asian summer monsoon (EASM) strength represented by the multi-proxy records from North China. Variation of the East Asian summer circulation and associated moisture transport may account for the long-term rainfall changes in Taiwan. Superimposed on this trend, we interpreted three prominent rainfall changes, which focus on the periods of 6800{\textendash}6600, 1090{\textendash}880 and 490{\textendash}190 cal. yr BP. These centennial time scale rainfall variations in our records are linked to the intensity of El-Ni{\~n}o Southern Oscillations.},
	keywords = {C/N ratio, Fern spore, La Ni{\~n}a, Okinawa Trough, tropical cyclone},
	issn = {00310182},
	doi = {10.1016/j.palaeo.2018.11.026},
	url = {https://linkinghub.elsevier.com/retrieve/pii/S0031018218303444},
	author = {Chen, Jinxia and Li, Tiegang and Nan, Qingyun and Shi, Xuefa and Liu, Yanguang and Jiang, Bo and Zou, Jianjun and Selvaraj, Kandasamy and Li, Dongling and Li, ChuanShun}
}
