Paleolimnological reconstruction of the centennial eutrophication processes in a sub-tropical South American reservoir

Halac, Silvana R.; Mengo, Luciana; Guerra, Lucía; Lami, Andrea; Musazzi, Simona; Loizeau, Jean Luc; Ariztegui, Daniel; Piovano, Eduardo L.

doi:10.1016/j.jsames.2020.102707

Cited by 18 publications

(3 citation statements)

References 49 publications

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“…In aquatic ecosystems such as Jackson Lake, the absence of long monitoring records requires paleolimnological archives be used for retrospective environmental assessment and establishing baselines for change detection (Smol, 2019). Diatom-rich lake sediments have proven valuable for evaluating both short and long-term natural and anthropogenic changes to ecosystem structure and function worldwide (e.g., Dixit et al, 1993;Flower et al, 2001;Haberle et al, 2006;Woodbridge et al, 2014;Chen et al, 2015;Maslennikova et al, 2016;Smol, 2019;Halac et al, 2020;Streib et al, 2021). Such information provides valuable context for lake managers seeking to preserve ecosystem services as hydroclimatic conditions change (Paterson et al, 2020).…”

Section: Overviewmentioning

confidence: 99%

Fossil Diatoms Reveal Natural and Anthropogenic History of Jackson Lake (Wyoming, USA)

Dilworth¹,

Stone²,

Yeager³

et al. 2023

Earth Sci. Syst. Soc.

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Jackson Lake supplies valuable cultural and provisioning ecosystem services to the Upper Snake River watershed in Wyoming and Idaho (western USA). Construction of Jackson Lake Dam in the early 20th century raised lake level by ∼12 m, generating an important water resource supporting agriculture and ranching, as well as tourism associated with Grand Teton National Park. Outlet engineering drastically altered Jackson Lake’s surface area, morphology, and relationship with the inflowing Snake River, yet the consequences for nutrient dynamics and algae in the lake are unknown. Here, we report the results of a retrospective environmental assessment completed for Jackson Lake using a paleolimnological approach. Paleoecological (diatoms) and geochemical datasets were developed on a well-dated sediment core and compared with available hydroclimate data from the region, to assess patterns of limnological change. The core spans the termination of the Little Ice Age and extends to the present day (∼1654–2019 CE). Diatom assemblages prior to dam installation are characterized by high relative abundances of plankton that thrive under low nutrient availability, most likely resulting from prolonged seasonal ice cover and perhaps a single, short episode of deep convective mixing. Following dam construction, diatom assemblages shifted to planktic species that favor more nutrient-rich waters. Elemental abundances of sedimentary nitrogen and phosphorous support the interpretation that dam installation resulted in a more mesotrophic state in Jackson Lake after ∼1916 CE. The data are consistent with enhanced nutrient loading associated with dam emplacement, which inundated deltaic wetlands and nearshore vegetation, and perhaps increased water residence times. The results of the study highlight the sensitivity of algal composition and productivity to changes in nutrient status that accompany outlet engineering of natural lakes by humans and have implications for water resource management.

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Section: Overviewmentioning

confidence: 99%

Fossil Diatoms Reveal Natural and Anthropogenic History of Jackson Lake (Wyoming, USA)

Dilworth¹,

Stone²,

Yeager³

et al. 2023

Earth Sci. Syst. Soc.

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“…Concurrently, a high nutrient concentration was connected to the surge in the growth of heterotrophic microorganisms that thrive on the deceased biomass, consuming oxygen and releasing carbon dioxide. Examples of algae blooms are common in Asia [1][2][3], Africa [4][5][6], Europe [7][8][9][10], and the Americas [11][12][13][14][15][16]. Considering the significant scale of this environmental issue and its profound impact on living organisms and humans, there has been and continues to be a focus on developing more effective methods for the removal of nitrogen from wastewater streams before discharge to the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies

Omar,

Almomani,

Qiblawey

et al. 2024

Sustainability

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Nitrogen-rich wastewater is a major environmental issue that requires proper treatment before disposal. This comprehensive overview covers biological, physical, and chemical nitrogen removal methods. Simultaneous nitrification–denitrification (SND) is most effective in saline water when utilizing both aerobic and anoxic conditions with diverse microbial populations for nitrogen removal. Coupling anammox with denitrification could increase removal rates and reduce energy demand. Suspended growth bioreactors effectively treated diverse COD/N ratios and demonstrated resilience to low C/N ratios. Moving biofilm bioreactors exhibit reduced mortality rates, enhanced sludge–liquid separation, increased treatment efficiency, and stronger biological structures. SND studies show ≥90% total nitrogen removal efficiency (%RETN) in diverse setups, with Defluviicoccus, Nitrosomonas, and Nitrospira as the main microbial communities, while anammox–denitrification achieved a %RETN of 77%. Systems using polyvinyl alcohol/sodium alginate as a growth medium showed a %RETN ≥ 75%. Air-lift reflux configurations exhibited high %RETN and %RENH4, reducing costs and minimizing sludge formation. Microwave pretreatment and high-frequency electric fields could be used to improve the %RENH4. Adsorption/ion exchange, membrane distillation, ultrafiltration, and nanofiltration exhibit promise in industrial wastewater treatment. AOPs and sulfate-based oxidants effectively eliminate nitrogen compounds from industrial wastewater. Tailoring proposed treatments for cost-effective nitrogen removal, optimizing microbial interactions, and analyzing the techno-economics of emerging technologies are crucial.

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“…Historical reservoir evolution is a promising subfield of climatic change studies (Cardoso-Silva et al, 2021;Margarint et al, 2021;Bábek et al, 2021;Fei et al, 2021;Halac et al, 2020). Textual records on reservoir water level are fragmentary and qualitative, which thus hamper the reconstruction of water level change with high resolution.…”

Section: Introductionmentioning

confidence: 99%

Water level change of Lake Machang in eastern China during the past 200 years

Fei

2021

Preprint

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Abstract. Lake Machang, which occupies an area of approximately 30 km2 in Jining City of eastern China, was a historical reservoir on the Grand Canal existing from early 15th century to early 20th century. The premodern monthly water level observation of Lake Machang commenced in 1814 AD and ended in 1902 AD. The available observation data from the monthly records could cover 75.6 % of the whole study period 1814–1912. Although the water level was seemingly artificially intervened by human activities, monthly and annual water level changes still correlated well with precipitation. That is, climate is still the dominant factor of water level changes on seasonal and annual scales. The flooding of the Yellow River in 1871 AD carried large amount of silt into Lake Machang, which resulted in the rise of lake bed and reclamation initiated by local residents. In particular, after the reclamation activity was officially approved in 1900 AD, Lake Machang was massively reclaimed and eventually dried up in the early 20th century.

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Paleolimnological reconstruction of the centennial eutrophication processes in a sub-tropical South American reservoir

Cited by 18 publications

References 49 publications

Fossil Diatoms Reveal Natural and Anthropogenic History of Jackson Lake (Wyoming, USA)

Fossil Diatoms Reveal Natural and Anthropogenic History of Jackson Lake (Wyoming, USA)

Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies

Water level change of Lake Machang in eastern China during the past 200 years

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