The benthic invertebrates of Lake Khubsugul, Mongolia

Kozhova, O. M.; Erbaeva, E. A.; Сафронов, Г. П.

doi:10.1016/s0065-2504(00)31009-1

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…Dulma (1979) was described conducting extensive investigations of some limnological features of those lakes. A wealth of limnological information on the physical, chemical and biological nature of such lakes is available in Mongolia's deepest lake, Hovsgol (Kozhova and Zagorenko 1979;Hindak and Zagorenko 1992;Kozhova et al 1994Kozhova et al , 2000Goulden et al 2000;Edlund et al 2003). Goulden et al (2006) have vigorously edited the most recent limnological results from Lake Hovsgol as reported by several scientists.…”

Section: Introductionmentioning

confidence: 99%

Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes

2009

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The objective of this study is to describe the biogeochemical characteristics in the waters of Mongolian lakes, particularly those related to parameters limiting phytoplankton growth and the trophic state. Investigations into the distribution of chemical and biological parameters were carried out in the following 18 lakes: Har Us, Har, Hovsgol, Achit, Dalai, Bayan, Tolbo, Holboo, Bust, Sangiyn Dalai, Tunamal, Dorgon, Uureg, Telmen, Hyargas, Uvs, Erkhel and Oygon, all of which showed a wide range of salinity between 0.16 and 24.9 g l -1 . Lake water was classified into four types: six fresh (less than 0.5 g l -1 salinity), three subsaline (0.5-3 g l -1 ), seven hyposaline (3-20 g l -1 ) and two mesosaline (20-50 g l -1 ) lakes. Predominant cations and anions in the order of dominance were Ca, Mg [ Na [ K and HCO 3 [ SO 4 , Cl in freshwater lakes, Na [ Mg [ Ca, K and HCO 3 , Cl [ SO 4 in subsaline lakes, and Na [ Mg [ K, Ca and Cl, SO 4 [ HCO 3 in hyposaline and mesosaline lakes. Nitrogenous and phosphorus nutrients in the waters were low, seemingly caused by the low loads from their watersheds, where the ground was free of vegetation with an extremely low level of human activity. The present investigations revealed some 234 taxa of phytoplankton and 38 of zooplankton. The PC:PN:PP stoichiometric ratio by weight was (22-202):(3-27):1. Phosphorus was assessed as the potential limiting parameter in eight lakes, nitrogen in six and both nutrients in four others. Twelve lakes showed an oligotrophic character, while six were mesotrophic type.The six oligotrophic lakes seemed to be subject to phosphorus limiting phytoplankton growth, four to nitrogen and two to both limitations. In the mesotrophic lakes, on the other hand, phosphorus limitation was verified in two lakes, nitrogen in two others and both in two lakes.

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Section: Introductionmentioning

confidence: 99%

Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes

2009

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“…2) shows a pattern where mermithids are much more diverse in the northern than the southern hemisphere. Consequently, the family Mermithidae is claimed to have a Holarctic distribution (Rubtsov, 1974in Kozhova et al, 2000. In reality, the current data is inconclusive with regard to global distribution and the observed pattern may simply be an artifact of sampling bias: nematological literature reveals that there has been very little research focus on mermithids in the southern hemisphere and as a result we know little about mermithids of that region (see also discussion above).…”

Section: Distribution Versus Sampling Biasmentioning

confidence: 91%

“…Decraemer & Coomans (1994) summarized the nematode species count from the ancient lakes Malawi, Kinneret, Titicaca, Tanganyika, and Ohrid to be 3, 7, 11, 14, and 24, respectively. Lake Baikal is one of the better studied among the ancient lakes with a rich nematofuana of 92 species in 20 families of which about 90% are considered endemic to the lake (Kozhova et al, 2000). Taxonomically, tobrilids disproportionately dominate the community with globally unparalleled diversity making this lake the center of known tobrilid diversity (Tsalolikhin, 1980(Tsalolikhin, , 1983.…”

Section: Endemismmentioning

confidence: 99%

Global diversity of nematodes (Nematoda) in freshwater

2007

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Despite free-living nematodes being present in all types of limnetic habitats including unfavorable conditions that exclude many other meiobenthic invertebrates, they received less attention than marine and terrestrial forms. Two-fifths of the nematode families, one-fifth of the nearly 1800 genera and only 7% of the about 27,000 nominal species are recorded from freshwater habitats. The Dorylaimia are the most successful in freshwater habitats with nearly twothirds of all known freshwater nematodes belonging to this subclass. Members of the subclass Enoplia are principally marine though include some exclusively freshwater taxa with extreme endemism. The subclass Chromadoria includes half of the freshwater nematode families and members of the Monhysterida and Plectida are among the most widely reported freshwater nematodes. Studies on freshwater nematodes show extreme regional bias; those from the southern hemisphere are extremely underrepresented, especially compared to European freshwater bodies. The majority of records are from a single biogeographic region. Discussion on nematode endemism is largely premature since apart from Lake Baikal, the nematofauna of ancient lakes as centers of speciation is limited and recent discoveries show high nematode abundance and diversity in cryptic freshwater bodies, underground calcrete formations and stromatolite pools potentially with a high number of new taxa.

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“…The fauna of Baikalian Chironomidae is diverse; according to our and references data (Linevich 1981, Kozhova et al, 2000, it includes 166 species and forms of Chironomidae larvae from 5 subfamilies Tanypodinae (11), Prodiamesinae (2), Diamesinae (10), Orthocladiinae (59), Chironominae (84). The species diversity of Chironomidae larvae effects the structure of their communities.…”

Section: Introductionmentioning

confidence: 99%

Chironomid Communities in the Littoral Zone on the Western Coast of The

Кравцова¹

2007

Chironomus

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AbstractThe spatial distribution of chironomidcommunities in the littoral zone (0-20 m) of thewestern coast of the southern Baikal basin isinvestigated. The fauna is composed of 16 speciesand forms of chironomid larvae, comprising 10communities. It has been found that thecommunities are characterized by rather poorspecies diversity; Shannon’s index varies from0.7 to 2.1 bit. Their distribution is affected byhydro-lithodynamic conditions, type of bottomsediments and macrophyte development. Thepeak of maximal biomass of chironomid larvaeon the facies of non-rounded rock debris nearBerezovy Cape is recorded in spring.

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The benthic invertebrates of Lake Khubsugul, Mongolia

Cited by 8 publications

References 2 publications

Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes

Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes

Global diversity of nematodes (Nematoda) in freshwater

Chironomid Communities in the Littoral Zone on the Western Coast of The

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