Rapid ecological change in the coastal zone of Lake Baikal (East Siberia): Is the site of the world's greatest freshwater biodiversity in danger?

Тимошкин, О. А.; Самсонов, Д. П.; Yamamuro, Masumi; Moore, Marianne V.; Белых, О. И.; Malnik, V. V.; Sakirko, M. V.; Shirokaya, Alena A.; Бондаренко, Н. А.; Domysheva, V. M.; Федорова, Г. А.; Кочетков, А. И.; Kuzmin, Anton V.; Lukhnev, A. G.; Medvezhonkova, O. V.; Непокрытых, А. В.; Pasynkova, E. M.; Poberezhnaya, A. E.; Potapskaya, N. V.; Рожкова, Н. А.; Шевелева, Н. Г.; Тихонова, И. В.; Timoshkina, E.M.; Томберг, И. В.; Volkova, Ekaterina Alexandrovna; Zaitseva, E. P.; Zvereva, Yu. M.; Kupchinsky, А. B.; Bukshuk, N. A.

doi:10.1016/j.jglr.2016.02.011

Cited by 173 publications

(127 citation statements)

References 20 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%

“…While there have been relatively few studies of EOCs in ancient lakes, many of these compounds are likely present due to the adjacent human settlements and activities such as recreation, fishing, agriculture, and aquaculture. In Lake Baikal, organochlorines associated with the cleaning of railway cars are the suspected cause of gastropod “cemeteries,” which have been observed on the northern shore (Timoshkin et al ). In Lake Victoria, residues of banned organochlorine and organophosphorus pesticides have been detected (Musa et al ), along with elevated concentrations of estrogen compounds (Mdegela et al ).…”

Section: Metals and Emerging Contaminantsmentioning

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: Metals and Emerging Contaminantsmentioning

confidence: 99%

Recent ecological change in ancient lakes

Hampton

McGowan

Ozersky

et al. 2018

Limnology & Oceanography

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“…This disease outbreak developed into a sponge mass mortality in 2013. The most visible effects concerned the branching forms of L. baicalensis with, in this case, a disease occurrence affecting between 30 and 100% in the Southern Basin of Lake Baikal [55].…”

Section: Introductionmentioning

confidence: 97%

Brown Rot Syndrome and Changes in the Bacterial Сommunity of the Baikal Sponge Lubomirskia baicalensis

et al. 2017

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Mass mortality events have led to a collapse of the sponge fauna of Lake Baikal. We describe a new Brown Rot Syndrome affecting the endemic species Lubomirskia baicalensis. The main symptoms are the appearance of brown patches at the sponge surface, necrosis, and cyanobacterial fouling. 16S rRNA gene sequencing was used to characterize the bacterial community of healthy versus diseased sponges, in order to identify putative pathogens. The relative abundance of 89 eubacterial OTUs out of 340 detected has significantly changed between healthy and diseased groups. This can be explained by the depletion of host-specific prokaryotes and by the appearance and proliferation of disease-specific OTUs. In diseased sponges, the most represented OTUs belong to the families Oscillatoriaceae, Cytophagaceae, Flavobacteriaceae, Chitinophagaceae, Sphingobacteriaceae, Burkholderiaceae, Rhodobacteraceae, Comamonadaceae, Oxalobacteraceae, and Xanthomonadaceae. Although these families may contain pathogenic agents, the primary causes of changes in the sponge bacterial community and their relationship with Brown Rot Syndrome remain unclear. A better understanding of this ecological crisis will thus require a more integrative approach.

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“…During the last years, there has been increasing concern about the ecosystem of Lake Baikal and the proper ecological monitoring of this lake111213. Baikal is the oldest and deepest lake in the world14, containing 20% of all available surface fresh water on the planet15, and is inhabited by extremely diverse endemic fauna1214.…”

mentioning

confidence: 99%

“…Because of its uniqueness, Lake Baikal was designated a World Heritage Site by UNESCO. Along with water warming due to the global climate change12, an emerging problem of the lake is the massive proliferation of algae and macrophytes in coastal areas, which is caused by local eutrophication and has caused the death of endemic invertebrates of the benthic zone1316, where the most animal diversity is found. Therefore, there is an urgent need to develop novel effective techniques for the environmental monitoring of the World’s “Sacred Sea”, which can be later transferred to other aquatic ecosystems.…”

mentioning

confidence: 99%

Remote in vivo stress assessment of aquatic animals with microencapsulated biomarkers for environmental monitoring

Gurkov

Shchapova

Bedulina

et al. 2016

Sci Rep

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Remote in vivo scanning of physiological parameters is a major trend in the development of new tools for the fields of medicine and animal physiology. For this purpose, a variety of implantable optical micro- and nanosensors have been designed for potential medical applications. At the same time, the important area of environmental sciences has been neglected in the development of techniques for remote physiological measurements. In the field of environmental monitoring and related research, there is a constant demand for new effective and quick techniques for the stress assessment of aquatic animals, and the development of proper methods for remote physiological measurements in vivo may significantly increase the precision and throughput of analyses in this field. In the present study, we apply pH-sensitive microencapsulated biomarkers to remotely monitor the pH of haemolymph in vivo in endemic amphipods from Lake Baikal, and we compare the suitability of this technique for stress assessment with that of common biochemical methods. For the first time, we demonstrate the possibility of remotely detecting a change in a physiological parameter in an aquatic organism under ecologically relevant stressful conditions and show the applicability of techniques using microencapsulated biomarkers for remote physiological measurements in environmental monitoring.

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Rapid ecological change in the coastal zone of Lake Baikal (East Siberia): Is the site of the world's greatest freshwater biodiversity in danger?

Cited by 173 publications

References 20 publications

Recent ecological change in ancient lakes

Recent ecological change in ancient lakes

Brown Rot Syndrome and Changes in the Bacterial Сommunity of the Baikal Sponge Lubomirskia baicalensis

Remote in vivo stress assessment of aquatic animals with microencapsulated biomarkers for environmental monitoring

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