scholarly journals Within-lake variability of subfossil chironomid assemblage in a large, deep subtropical lake (Lugu lake, southwest China)

2013 ◽  
Vol 72 (1) ◽  
pp. 10 ◽  
Author(s):  
Enlou Zhang ◽  
Yanmin Cao ◽  
Peter Langdon ◽  
Qian Wang ◽  
Ji Shen ◽  
...  
2013 ◽  
Vol 33 (1) ◽  
pp. 34-39 ◽  
Author(s):  
Fengyue Shu ◽  
Frank Köhler ◽  
Cuichang Fu ◽  
Hongzhu Wang

2015 ◽  
Vol 47 (3) ◽  
pp. 461-472 ◽  
Author(s):  
Qian Wang ◽  
Xiangdong Yang ◽  
N. John Anderson ◽  
Junfeng Ji

2019 ◽  
Vol 41 (5) ◽  
pp. 771-785 ◽  
Author(s):  
Qian Wang ◽  
Paul B Hamilton ◽  
Giri Kattel ◽  
Lingyang Kong

Abstract Multiple biogeochemical variables in a sediment core from Lake Lugu in southwest China were studied to investigate the effects of regional environmental changes on the ecosystem. Subfossil Cladocera, together with diatom, pollen and geochemical records, were used to examine climate-induced changes in lake ecosystem since the Last Glacial Maximum (30 000–0 cal year BP). Consistency among these biological records indicates that the succession of zooplankton, algae and vegetation changed in response to direct and indirect climatic factors. Alterations in the nutrient supply mediated by climate-induced changes in vegetation and soil processes are likely responsible for the variability of cladocerans. During the Last Glacial Maximum, cladocerans were dominated by littoral taxa (e.g. Alona), indicating an unproductive and oligotrophic lake system. A peak distribution in the pelagic Bosmina highlights the period of increased nutrient availability at 11 500 cal year BP. The ecological changes in Cladocera at 19 000 cal year BP and diatom communities at 18 000 cal year BP reveal independent and indirect responses to nutrient and light conditions induced by solar radiation and increased monsoon intensity across the study region. The palaeoecological archives from Lake Lugu sediments highlight a complex lake ecosystem influenced by both direct and indirect changes corresponding to climate changes and shifts in regional anthropogenic pressure over the last 30 000 years.


2016 ◽  
Vol 86 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Qian Wang ◽  
Xiangdong Yang ◽  
Nicholas John Anderson ◽  
Xuhui Dong

AbstractThe reconstruction of Holocene environmental changes in lakes on the plateau region of southwest China provides an understanding of how these ecosystems may respond to climate change. Fossil diatom assemblages were investigated from an 11,000-year lake sediment core from a deep, alpine lake (Lugu Hu) in southwest China, an area strongly influenced by the southwest (or the Indian) summer monsoon. Changes in diatom assemblage composition, notably the abundance of the two dominant planktonic species, Cyclotella rhomboideo-elliptica and Cyclostephanos dubius, reflect the effects of climate variability on nutrient dynamics, mediated via thermal stratification (internal nutrient cycling) and catchment-vegetation processes. Statistical analyses of the climateediatom interactions highlight the strong effect of changing orbitally-induced solar radiation during the Holocene, presumably via its effect on the lake’s thermal budget. In a partial redundancy analysis, climate (solar insolation) and proxies reflecting catchment process (pollen percentages, C/N ratio) were the most important drivers of diatom ecological change, showing the strong effects of climateecatchmentevegetation interactions on lake functioning. This diatom record reflects long-term ontogeny of the lake-catchment ecosystem and suggests that climatic changes (both temperature and precipitation) impact lake ecology indirectly through shifts in thermal stratification and catchment nutrient exports.


2013 ◽  
Vol 51 (4) ◽  
pp. 413-425 ◽  
Author(s):  
Su-Ping LI ◽  
Ya-Qin HU ◽  
David Kay FERGUSON ◽  
Jian-Xin YAO ◽  
Cheng-Sen LI

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
B Liu ◽  
F Li ◽  
Z Guo ◽  
L Hong ◽  
W Huang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document