Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance

We analyze 31 surface-sediment samples from the depths of 2–33 m in the large fresh-water Lake Ngoring on the northeastern Tibet–Qinghai Plateau to provide depth-preference information of ostracods valuable for palaeo-bathymetric reconstruction. Among the nine species discovered, Tonnacypris estonic...

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Autores principales:	Xiangzhong Li, Dayou Zhai, Qianwei Wang, Ruilin Wen, Ming Ji
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ostracoda (Crustacea) Lake Ngoring Water depth Transfer function Biogeography China Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/f5557b562c5344acb5d33b1323d9404b
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spelling	oai:doaj.org-article:f5557b562c5344acb5d33b1323d9404b2021-12-01T04:58:04ZDepth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance1470-160X10.1016/j.ecolind.2021.108019https://doaj.org/article/f5557b562c5344acb5d33b1323d9404b2021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21006841https://doaj.org/toc/1470-160XWe analyze 31 surface-sediment samples from the depths of 2–33 m in the large fresh-water Lake Ngoring on the northeastern Tibet–Qinghai Plateau to provide depth-preference information of ostracods valuable for palaeo-bathymetric reconstruction. Among the nine species discovered, Tonnacypris estonica and Ilyocypris echinata show clear preferences to shallow waters while Leucocythere sp. 1 and Cytherissa lacustris are confined to depths exceeding 22 m. Ilyocypris sp., Candoninae sp., and Leucocythere sp. 2 are slightly more abundant in deeper parts of the lake, while Candona candida and Fabaeformiscandona sp. tend to be more abundant in the shallow area. Such information can be used to reconstruct qualitatively the past lake level. Meanwhile, based on 23 forward-selected samples with over 200 valve counts, three water-depth transfer functions are established, which have generally good and comparable performances judged from their determination coefficients and predictive errors. We propose that future studies should endeavor to investigate the distribution of more ostracod species across wider depth ranges from various lakes to encompass the large changes in ostracod assemblage and depth in the geologic past, and that datasets from different lakes can be synthesized into ‘mega-transfer functions’ to improve palaeolimnological reconstruction.Xiangzhong LiDayou ZhaiQianwei WangRuilin WenMing JiElsevierarticleOstracoda (Crustacea)Lake NgoringWater depthTransfer functionBiogeographyChinaEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 108019- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ostracoda (Crustacea) Lake Ngoring Water depth Transfer function Biogeography China Ecology QH540-549.5
spellingShingle	Ostracoda (Crustacea) Lake Ngoring Water depth Transfer function Biogeography China Ecology QH540-549.5 Xiangzhong Li Dayou Zhai Qianwei Wang Ruilin Wen Ming Ji Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
description	We analyze 31 surface-sediment samples from the depths of 2–33 m in the large fresh-water Lake Ngoring on the northeastern Tibet–Qinghai Plateau to provide depth-preference information of ostracods valuable for palaeo-bathymetric reconstruction. Among the nine species discovered, Tonnacypris estonica and Ilyocypris echinata show clear preferences to shallow waters while Leucocythere sp. 1 and Cytherissa lacustris are confined to depths exceeding 22 m. Ilyocypris sp., Candoninae sp., and Leucocythere sp. 2 are slightly more abundant in deeper parts of the lake, while Candona candida and Fabaeformiscandona sp. tend to be more abundant in the shallow area. Such information can be used to reconstruct qualitatively the past lake level. Meanwhile, based on 23 forward-selected samples with over 200 valve counts, three water-depth transfer functions are established, which have generally good and comparable performances judged from their determination coefficients and predictive errors. We propose that future studies should endeavor to investigate the distribution of more ostracod species across wider depth ranges from various lakes to encompass the large changes in ostracod assemblage and depth in the geologic past, and that datasets from different lakes can be synthesized into ‘mega-transfer functions’ to improve palaeolimnological reconstruction.
format	article
author	Xiangzhong Li Dayou Zhai Qianwei Wang Ruilin Wen Ming Ji
author_facet	Xiangzhong Li Dayou Zhai Qianwei Wang Ruilin Wen Ming Ji
author_sort	Xiangzhong Li
title	Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
title_short	Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
title_full	Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
title_fullStr	Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
title_full_unstemmed	Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance
title_sort	depth distribution of ostracods in a large fresh-water lake on the qinghai–tibet plateau and its ecological and palaeolimnological significance
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f5557b562c5344acb5d33b1323d9404b
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Depth distribution of ostracods in a large fresh-water lake on the Qinghai–Tibet Plateau and its ecological and palaeolimnological significance

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