Do changes in water depth and water level influence the diatom diversity of Yunlong Lake, in Yunnan Province, Southwest China?

Zou, Yao; Wang, Luo; Xu, Hao; Yan, Yao; Zhang, Jiaoyang; Liu, Yuan; Zhang, Peng; Gu, Zhaoyan; Lü, Houyuan

doi:10.1007/s10933-020-00137-x

Cited by 6 publications

(16 citation statements)

References 66 publications

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“…Yunlong Lake (25°52′12.89″ N, 99°16′49.75″ E, Figure 1B) is at an altitude of 2,551 m.a.s.l. ; it has a surface area of ∼1.5 km 2 , a watershed area of ∼11.25 km 2 , and a maximum water depth of ∼14.1 m. Yunlong Lake is a typical tectonic faulted lake with no natural inflows, and the lake water is charged mainly by atmospheric precipitation (Zou et al, 2018;Zou et al, 2020). In the past, there was a natural outflow in the east (Figure 1B), which flowed into a branch of the Lantsang River.…”

Section: Overview Of the Study Sitementioning

confidence: 99%

“…Later, in October 2003, in response to increasing demand for water for domestic consumption and irrigation, a water input project to increase the reservoir capacity was initiated and completed in July 2009. Subsequently, the lake was enlarged to form a medium-sized reservoir (Zou et al, 2020).…”

Section: Overview Of the Study Sitementioning

confidence: 99%

“…Since lakes are seldom entirely translucent, benthic diatoms can often only grow within the shallow-water photic zone, while planktonic diatoms can remain suspended in the upper photic zone of the entire lake. Therefore, the relative abundance of different benthic diatom species, as well as the ratio between planktonic and benthic diatoms, is significantly correlated with water depth (Kingsbury et al, 2012;Zou et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Several paleoclimatic reconstructions have been produced using diatom transfer functions (Lotter and Bigler, 2000;Kӧster and Pienitz, 2006); however, the sensitivity and validity of these reconstruction need to be further examined (Juggins, 2013), based for example on comparisons with meteorological observations. Yunlong Lake, a subtropical alpine lake in Yunnan Province of China which is very sensitive to the regional climate change (Wang et al, 2018;Zou et al, 2018;Zou et al, 2020;Jiang et al, 2019) was selected to produce diatom-based environmental transfer functions. Through a two-year investigation of the modern diatom seasonal succession at the lake (Zou et al, 2018), a diatom-water temperature transfer function was constructed.…”

Section: Introductionmentioning

confidence: 99%

“…Through a two-year investigation of the modern diatom seasonal succession at the lake (Zou et al, 2018), a diatom-water temperature transfer function was constructed. By investigating spatial pattern of surface diatom assemblages with water depth (Zou et al, 2020), a diatom-water depth transfer function was also constructed. Combined with the analysis of diatom assemblage changes in a sediment core over the last ∼100 years, the two diatom transfer functions were used to quantitatively reconstruct changes in mean surface water temperature and water level at the site.…”

Section: Introductionmentioning

confidence: 99%

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Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

Zou

Luo

et al. 2021

Front. Earth Sci.

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Although diatom records from lake sediments have been used for quantitative paleoclimatic reconstruction, their validity and sensitivity have rarely been tested rigorously. At Yunlong Lake, an alpine lake in Southwest China, we studied the seasonal succession of diatom assemblages to produce a mean surface water temperature (MSWT) transfer function. In addition, based on the spatial distribution of surface diatom assemblages with water depth, we produced a diatom-water depth (WD) transfer function. Combined with the analysis of diatom assemblages in a sediment core (YL2013-A), changes in surface water temperature and water level over the last ∼100 years were quantitatively reconstructed using the diatom-based transfer functions. Comparison with records of regional meteorology and reservoir water capacity revealed that the diatom-based lake water level reconstruction is a sensitive indicator of short-term fluctuations in precipitation, and it also reflects a long-term stepwise rise in water level caused by the impounding and large-scale extension of the reservoir. In addition, the diatom-inferred MSWT is consistent with the changes in air temperature prior to large-scale human disturbance of the site. However, after the extension of the reservoir, although the regional air temperature continued to increase, the water temperature decreased substantially. This suggests that the large increase in lake water volume in the short term led to a decrease in the average water temperature, which in turn led to the occurrence of a diatom bloom in the cold season. The results demonstrate that diatom transfer functions based on modern observations of the same lake has a high environmental sensitivity and can be used for the quantitative reconstruction of regional climate change. Overall, our findings provide a foundation for the use of lake diatom records for quantitative paleoclimatic reconstruction on various timescales.

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Section: Overview Of the Study Sitementioning

confidence: 99%

Section: Overview Of the Study Sitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

Zou

Luo

et al. 2021

Front. Earth Sci.

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Spatial variation of diatom diversity with water depth at Huguang Maar Lake, Southern China

Wang

Zou

et al. 2021

J Paleolimnol

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Current anthropogenic warming threatens shallow Lake ecosystems on the Tibetan plateau: A palaeolimnological study covering the past 1,600 years in Genggahai Lake

Zhao

Sun

et al. 2023

Freshwater Biology

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1. The Tibetan Plateau has ∼1,200 lakes larger than 1 km 2 with a total area of ~46,000 km 2 . The annual mean air temperature of the Tibetan Plateau has increased 2.5°C over the past 60 years. Lakes in this region are extremely responsive to climate changes as a result of their low biodiversity and simple food webs. However, it is unclear whether the current anthropogenic warming will benefit or threaten the aquatic ecosystems in this region.2. We assessed patterns of change associated with climate change in a shallow, freshwater lake (Genggahai Lake) on the NE Tibetan Plateau over the past ~1,600 years based on diverse aquatic fossils (macrophytes, molluscs, cladocerans and diatoms), total organic carbon (TOC) and total nitrogen (TN) of a sediment core.3. The abundances of macrophytes, molluscs and cladocerans, and the concentrations of TOC and TN in the sediments were high during the Mediaeval Warm Period (MWP, ~940-1,410 CE) but low during the Dark Ages Cold Period (DACP, ~390-940 CE) and the Little Ice Age (LIA, ~1,410-1970 CE), suggesting that modest natural warming was associated with the biomass of macrophytes and consumers in the food web. By contrast, low abundance of macrophytes and high abundance of planktonic diatoms were recorded in the sediments during the Current Warm Period (CWP, ~1970-2020 CE). Current anthropogenic warming has resulted in significantly higher temperatures than during the MWP, associated with the development of planktonic algae rather than macrophytes. 4. Our findings show that the current anthropogenic warming, coupled with increased atmospheric nitrogen deposition and activated nutrients from thawed permafrost, is associated with phytoplankton dominance in lakes on the Tibetan Plateau, and may lead to significant reductions in ecosystem services provided by the lakes.

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Do changes in water depth and water level influence the diatom diversity of Yunlong Lake, in Yunnan Province, Southwest China?

Cited by 6 publications

References 66 publications

Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

Spatial variation of diatom diversity with water depth at Huguang Maar Lake, Southern China

Current anthropogenic warming threatens shallow Lake ecosystems on the Tibetan plateau: A palaeolimnological study covering the past 1,600 years in Genggahai Lake

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