Morphometric and hydrochemical characteristics of Kazakhstan lakes

Ryanzhin, S. V.; Myakisheva, N. V.; Zhumangaliev, Z. M.

doi:10.1134/s0097807815050139

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…These tests have societal relevance because the power-law size distribution is the basis for most estimates of the global contributions of lakes to the carbon cycle, including some of those cited in IPCC reports (e.g., Tranvik et al (2009); Bastviken et al (2011)); they also have relevance for ecology, biogeochemistry, and even the study of other planets (Supplementary Material §3). Inclusion of values based on a power law assumption in high profile science-policy interfaces (e.g., Ciais et al (2013)) engenders a responsibility to ensure accurate characterization, but rigorous evaluations are never completed prior to extrapolation and even cursory evaluations are rare (e.g., Lehner and Döll (2004); Meybeck (1995); Telmer and Costa (2007); Ryaanzhin (2010Ryaanzhin ( , 2015; Downing et al (2006); Chumchal et al (2016); Raymond et al (2013);Lazzarino et al (2009); Minns et al (2008); Kastowski et al (2011)). Application of goodness-of-fit tests is a simple and pragmatic way to fulfill this responsibility.…”

Section: Discussionmentioning

confidence: 99%

The size-distribution of Earth’s lakes and ponds: limits to power-law behavior

Cael¹,

Biggs²,

Seekell³

2022

Preprint

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Global-scale characterizations of Earth's lakes and ponds assume their surface areas are power-law distributed across the full size range. However, empirical power-laws only hold across finite ranges of scales. In this paper, we synthesize evidence for upper and lower limits to power-law behavior in lake size-distributions. We find support for the power-law assumption in general. We also find strong evidence for a lower limit to this power-law behavior, although the specific value for this limit is highly variable (0.001 - 1 km$^2$), corresponding to orders of magnitude differences of the total number of lakes and ponds. The exact mechanisms that break the power-law at this limit are unknown, but we are able rule out mapping errors as a first-order factor. There is no evidence for an upper limit to power-law behavior at the global scale. There is inconsistent evidence for an upper limit at regional-scales. Explaining variations in these limits stands to improve the accuracy of global lake characterizations and shed light on the specific mechanism responsible for forming and breaking lake power-law distributions.

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Section: Discussionmentioning

confidence: 99%

The size-distribution of Earth’s lakes and ponds: limits to power-law behavior

Cael¹,

Biggs²,

Seekell³

2022

Preprint

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“…Alekin to the hydrochloric group (over 25 g/l). When hydrometeorological conditions change, some lakes move from one group to another [19].…”

Section: Characteristics Of the Object Of Studymentioning

confidence: 99%

Comparative Characteristics of the Lakes of the Karaganda Region Over the Past 50 Years

Pangaliyev

2023

EJE

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The paper gives a general overview of the lakes of the Karaganda region according to the main hydrological characteristics. A comparative analysis of several morphometric indicators of medium and small lakes in the region in 1968 and 2020 was also carried out. Over the past period, the total area of small lakes has not changed, but some of the lakes were dry in 1968, so the total volume of water in this group has increased by 19.7% since 1968. In medium and larger lakes, a significant change in the total area and volume of water is observed: an increase in area by 4.12% and an increase in volume by 12.6%. In the largest lakes of the region (more than 20 km2), with an increase in the area of lakes by 6.5%, the volume of total water increased by 53%. Thus, despite the general increase in the average annual temperature and changes in the precipitation regime in the region, the areas of reservoirs and the volume of the total water mass have increased, while the dynamics of indicators depends on the specific area of the reservoir.

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