The rise and fall of primary producers and consumers in a multiply-stressed shallow lake (Lake Qilu, China) over the last 200 years

Klamt, Anna-Marie; Fuming, Qian; Hu, Kui; Wang, Jiaoyuan; Huang, Linpei; Li, Rui; Chen, Guangjie

doi:10.1016/j.ecolind.2021.107891

Cited by 14 publications

(2 citation statements)

References 94 publications

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“…F. crotonensis species appeared at each station; its peak abundance was at station 4 (table 2). This species can indicate that the conductivity in the environment is relatively high [55]. Theoretically, seawater has a reasonably high conductivity because it contains several chemical compounds [56] and station 4 is located at the downstream mouth of the river bordering the sea.…”

Section: Resultsmentioning

confidence: 99%

Epipelic diatom assemblages to determine water quality in the Tuntang River downstream, Demak, Central Java

Falah

Soeprobowati

Hadiyanto

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Tuntang River downstream, located in the Demak Regency, Central Java, frequently experiences floods caused by sedimentation, which has occurred continuously since 1970. Changes in land use resulted in ample surface runoff water. The phenomenon affects society’s activities around the Tuntang River downstream which can hinder their activities. The study aimed to analyze diatoms with a biological index and investigate their effect on water quality. Diatoms are one of the bioindicators describing water quality in the river. The sampling technique was used through purposive sampling by selecting four stations along the Tuntang River downstream. The extraction method of sediment was carried out with HCl and H2O2 as the solution. The results showed 59 species with 38363 individuals/gram from all research stations. The results showed the highest diversity index (H’) at station 4 (2.96), the highest uniformity index (e) at station 3 (0.68), and the highest dominance index (D) at station 1 (0.11), respectively. Nitzschia palea indicates the waters containing high C organic and meso-eutrophic based on the dominant species. The results’ findings are expected to become references for river management in the Tuntang River downstream.

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Section: Resultsmentioning

confidence: 99%

Epipelic diatom assemblages to determine water quality in the Tuntang River downstream, Demak, Central Java

Falah

Soeprobowati

Hadiyanto

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Our multiple bio‐indicators from the sediment record responded consistently to recent observed ecological shifts identified by Winter and Rosenberry (1998) and McKenna et al (2017). Different aquatic organisms may show heterogeneous responses to environmental changes due to different ecological sensitivities to and interactions with different environmental variables (Hu et al 2019; Klamt et al 2021). Primary producers in sediment (e.g., diatoms and algae) are more sensitive to nutrient change than to changes in hydrology (Hu et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Multiproxy paleolimnological records provide evidence for a shift to a new ecosystem state in the Northern Great Plains, USA

Mushet

Sweetman

2022

Limnology & Oceanography

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Wetlands in the Prairie Pothole Region of the North American Northern Great Plains perform multiple ecosystem services and are biodiversity hotspots. However, climatological changes can result in sudden shifts in these important ecosystems. For example, marked increases in precipitation in the last few decades have resulted in a widespread shift in wetlands across the Prairie Pothole Region to a new ecohydrological state. We used multiproxy analyses (diatom community composition and invertebrate stable isotopes) of 210Pb‐dated sediment cores from two adjacent, but morphologically and hydrologically different, prairie‐pothole wetlands to assess the effects of hydroclimatic variability on these wetland ecosystems. Our results provide evidence that the recent ecohydrological shift in the region's wetlands is unprecedented over the past ca. 178 yr. Oxygen stable isotopes in chironomid head capsules provide a record of paleohydrology changes. The most recent sediments (i.e., those deposited after the state shift) from both wetlands revealed novel changes in diatom communities that differed greatly from earlier community compositions. In addition, a depleted signal in deuterium and 13C carbon stable isotopes observed in chironomid head capsules and Daphnia ephippia, respectively, after 1993 is likely related to an increase in methane production in these wetlands. Our study highlights the importance of considering basin morphometry including whether a wetland has an overflow point, and multiple biological indicators to study climate‐change influences on freshwater ecosystems. Research using these techniques can lead to an improved understanding of recent ecosystem shifts, an understanding that will be essential for future climate‐change adaptation and mitigation in this ecologically important region.

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Response of lake water nutrient condition to anthropogenic activities from 1871 to 2013 in the Jiuzhaigou World Natural Heritage Site, China

Zheng

Du²,

Schmidt

et al. 2022

J Paleolimnol

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The rise and fall of primary producers and consumers in a multiply-stressed shallow lake (Lake Qilu, China) over the last 200 years

Cited by 14 publications

References 94 publications

Epipelic diatom assemblages to determine water quality in the Tuntang River downstream, Demak, Central Java

Epipelic diatom assemblages to determine water quality in the Tuntang River downstream, Demak, Central Java

Multiproxy paleolimnological records provide evidence for a shift to a new ecosystem state in the Northern Great Plains, USA

Response of lake water nutrient condition to anthropogenic activities from 1871 to 2013 in the Jiuzhaigou World Natural Heritage Site, China

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