Groundwater contamination by sewage causes benthic algal outbreaks in the littoral zone of Lake Baikal (East Siberia)

Тимошкин, О. А.; Moore, Marianne V.; Куликова, Н. Н.; Томберг, И. В.; Malnik, V. V.; Shimaraev, M. N.; Troitskaya, E. S.; Shirokaya, Alena A.; Sinyukovich, V. N.; Zaitseva, E. P.; Domysheva, V. M.; Yamamuro, Masumi; Poberezhnaya, A. E.; Timoshkina, E.M.

doi:10.1016/j.jglr.2018.01.008

Cited by 92 publications

(72 citation statements)

References 30 publications

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“…For example, in Lake Victoria, decreased water clarity has impacted reproduction by endemic cichlids, leading to the disappearance of dozens of species (Seehausen et al ). In Lake Baikal, littoral algal blooms have recently been recognized as threatening the extraordinary diversity of the nearshore benthos (Timoshkin et al ) and in Lake Tahoe, gradual decreases in water clarity appear to have precipitated declines of endemic deep‐water macrophyte‐invertebrate associations (Caires et al ). In Lakes Valencia, Titicaca, and Victoria, pronounced eutrophication has caused harmful algal blooms and severe degradation of water quality for human use (Jaffé et al ; Verschuren et al ; ESA ).…”

Section: Eutrophication: Sources and Effectsmentioning

confidence: 99%

“…Similarly, Lake Ohrid has experienced decreased vertical mixing as temperatures have warmed (Matzinger et al 2007). In subarctic Lake Baikal (Todd and Mackay 2003) and the temperate Caspian Sea (Kouraev et al 2004), lake ice duration and extent have declined over the past century, as it has in other lakes that freeze (Magnuson et al 2000). Surface waters in Baikal have warmed 0.208C per decade since 1946 (Hampton et al 2008).…”

Section: Modern Climate Change Effects On Ancient Lakesmentioning

confidence: 99%

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Recent ecological change in ancient lakes

Hampton

McGowan

Ozersky

et al. 2018

Limnology & Oceanography

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Ancient lakes are among the best archivists of past environmental change, having experienced more than one full glacial cycle, a wide range of climatic conditions, tectonic events, and long association with human settlements. These lakes not only record long histories of environmental variation and human activity in their sediments, but also harbor very high levels of biodiversity and endemism. Yet, ancient lakes are faced with a familiar suite of anthropogenic threats, which may degrade the unusual properties that make them especially valuable to science and society. In all ancient lakes for which data exist, significant warming of surface waters has occurred, with a broad range of consequences. Eutrophication threatens both native species assemblages and regional economies reliant on clean surface water, fisheries, and tourism. Where sewage contributes nutrients and heavy metals, one can anticipate the occurrence of less understood emerging contaminants, such as pharmaceuticals, personal care products, and microplastics that negatively affect lake biota and water quality. Human populations continue to increase in most of the ancient lakes’ watersheds, which will exacerbate these concerns. Further, human alterations of hydrology, including those produced through climate change, have altered lake levels. Co‐occurring with these impacts have been intentional and unintentional species introductions, altering biodiversity. Given that the distinctive character of each ancient lake is strongly linked to age, there may be few options to remediate losses of species or other ecosystem damage associated with modern ecological change, heightening the imperative for understanding these systems.

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Section: Eutrophication: Sources and Effectsmentioning

confidence: 99%

Section: Modern Climate Change Effects On Ancient Lakesmentioning

confidence: 99%

Recent ecological change in ancient lakes

Hampton

McGowan

Ozersky

et al. 2018

Limnology & Oceanography

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“…At severely affected sites, plummeting macroinvertebrate diversity, huge accumulations of rotting algae on beaches, and the clogging of fishers' nets has accompanied the proliferation of this algae. Human sewage in groundwater and surface water is the obvious driver of excessive algal growth in some areas (Timoshkin et al 2016(Timoshkin et al , 2018, but sites where humans are not concentrated are also impacted, suggesting more complex drivers. Similar FABs have been reported in nearshore habitats in Lake Tahoe, Lakes Wakitipu and Taup o (New Zealand) and smaller mountain lakes in the United States and New Zealand.…”

Section: Deploying Funds From the Cole And Futuresmentioning

confidence: 99%

Limnology and Oceanography Bulletin Volume 29 Number 2 May 2020 33–62

2020

Limnology & Oceanogr Bull

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“…The absence of such estimates is conditioned by the absence of significant effects of environmental pollution on aquatic biota and water quality [1,2], although some signs of water pollution (unpleasant odors, unchecked growth of aquatic weeds, etc.) in Lake Baikal have appeared in the last decade [3,4]. Even though the anthropogenic origin of changes in lake environment has not yet been proved [5], the need to evaluate the self-purification capacity of natural water systems has become evident.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Self-Purification Capacity of Surface Waters in Lake Baikal Watershed

Semenov

Силаев

et al. 2019

Water

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The removal of trace metals (TM), dissolved organic carbon (DOC), mineral nitrogen (Nmin.), and polycyclic aromatic hydrocarbons (PAHs) from the water of Lake Baikal and its tributaries was evaluated. The contaminant removal rate (CRR) and the contaminant removal capacity (CRC) were used as water self-purification parameters. The CRR was calculated as the difference between contaminant mass flow rates at downstream and upstream gauging stations. The CRC was calculated as the quotient of the CRR and the change in water discharge between downstream and upstream gauging stations. Whether the CRR and CRC have positive or negative values depends on whether contaminant release or removal occurs in the water body. The CRR depends on the size of the water body. The lowest and the highest CRRs observed for Baikal were equal to −15 mg/s (PAHs) to −7327 g/s (DOC), whereas the highest PAH and DOC removal rates observed for Selenga River (the major Baikal tributary) in summer were equal to −9 mg/s and −3190 g/s correspondingly. The highest PAH and DOC removal rates observed for small tributaries were equal to 0.0004 mg/s and −0.7 g/s respectively. The amplitude of annual CRR oscillations depends on contaminant abundance. The highest amplitude was typical for most abundant contaminants such as Nmin. and DOC. In unpolluted sections of the Selenga River the highest rates of N and C removal (−85 g/s and −3190 g/s, respectively) were observed in summer and the lowest rates (4 g/s and 3869 g/s, respectively) were observed in the spring. The lowest amplitude was typical for PAHs and some low-abundance TM such as V and Ni. The highest summer rates of V and Ni removal were equal to −378 mg/s and −155 mg/s respectively, whereas lowest spring rates are equal to 296 mg/s and 220 mg/s. The intermediate CRR amplitudes were typical for most abundant TM such as Sr, Al, and Fe. The spatial CRR variability depends on water chemistry and the presence of pollution sources. The lowest (up to 38 g/s) rates of Nmin. removal was observed for polluted lower Selenga sections characterized by low water mineralization and high DOC concentrations. The highest rates (−85 g/s) were observed for unpolluted upper sections. Seepage loss from the river to groundwater was also recognized as an important means of contaminant removal. The CRC values depend mostly on water residence time. The DOC removing capacity value of Baikal (−26 g/m3) were lower than those of Selenga in summer (−35 g/m3) but higher than the CRCs of all tributaries during the other seasons (from 30 mg/m3 to −10 g/m3).

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Groundwater contamination by sewage causes benthic algal outbreaks in the littoral zone of Lake Baikal (East Siberia)

Cited by 92 publications

References 30 publications

Recent ecological change in ancient lakes

Recent ecological change in ancient lakes

Limnology and Oceanography Bulletin Volume 29 Number 2 May 2020 33–62

Assessing the Self-Purification Capacity of Surface Waters in Lake Baikal Watershed

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