Ostracods as a proxy for paleoclimatic change: An essential role of bioculture experiment taking Limnocythere inopinata (Crustacea: Ostracoda) as an example

Ecological Indicators

Ganlin Guo¹  Hailei Wang²  Xingxing Kuang³  Can Wang³  Gao Song⁴ 

[1]Corresponding author at: Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China (X. Kuang).

[2]Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, 518055 Shenzhen, China

[3]Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 518055 Shenzhen, China

[4]MNR Key Laboratory of Saline Lake Resources and Environment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, 100037 Beijing, China

关键词: Ostracods;    Limnocythere inopinata;    Bioculture experiment;    Survival analysis;    Paleoclimatic reconstruction;    Tibetan Plateau;   

DOI  :  

来源: DOAJ

【 摘 要 】

Ostracods are favorable research materials for paleoclimatic reconstruction. Limnocythere inopinata, a commonly Holarctic species, is used frequently in paleoclimatic research. However, few ostracods bioculture data and its applications for paleoclimatic reconstruction have largely hindered deep understanding of the relationship between ostracods proxy and paleoclimatic change. Here we present the specific bioculture experiments on L. inopinata for the first time and statistically analyzed the survival curves of the experimental groups. The living specimens were collected from Lake Jiang co in northern Tibetan Plateau. Our results show that L. inopinata population living in Lake Jiang co prefers a narrow temperature range of 11–14 °C and a narrow salinity range of 3.50–6.50‰, respectively. The tolerance range is 11–17 °C for temperature and 0.50–9.50‰ for salinity. The results are apparently different from previous studies that this species has a very wide temperature (0.5–35.0 °C) and salinity range (0.18–18‰). Coupling with the records of other L. inopinata populations, it should be noted that L. inopinata populations living in different regions have adapted local aquatic environment, thus developed specific preference. This finding suggests that it is necessary to reassess the interpretation of L. inopinata valves in lacustrine sediments. As this example demonstrates, bioculture experiments on ostracods play an essential role in further realizing the relationship between ostracods proxy and paleoclimatic change.

【 授权许可】

Unknown