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All issues Volume 61 (2025) Int. J. Lim., 61 (2025) 6 Full HTML

Table 2

A. Country, (FR: France; RU: Russian Federation ; CH: Switzerland ; DE: Germany ; AT: Austria ; CA: Canada; US: United States of America; IT: Italy ; EE: Estonia ; SE: Sweden), latitude, morphologic characteristics and current trophic status with total phosphorus estimates (TP) of the 27 studied lakes. The lake volumes were estimated as the product of the average depth and the lake area. B: Trends, expressed as Sen's slope values, in lake summer surface water temperature (LSSWT) from O'Reilly et al. (2015), and trend in seasonal air temperatures (Winter: from December of the previous year to February, Spring: March to May; Summer: June to August; Autumn: September to November). Significant trends (p-value<0.05) are indicated with an asterisk.

Table 2A.
Lake Country Latitude (dec.deg) Elevation (m) Average depth (m) Maximum depth (m) Lake area (km2) Estimated volume (km3) Trophic status - TP (µg.L-1)
Annecy FR 45.85 447 41 65 27 1.11 Ultra-oligotrophic - 2
Baikal RU 53.50 457 749 1637 31500 23 593.50 Oligotrophic - 7
Bienne CH 47.08 429 30 74 39.3 1.18 Mesotrophic - 23
Bourget FR 45.76 231 80 147 44 3.52 Mesotrophic - 23
Brienz CH 46.72 564 173 260 30 5.19 Ultra-oligotrophic - 2
Constance DE/CH/AU 47.59 395 90 251 536 48.24 Oligotrophic - 7
Erie US/CA 42.22 173 19 64 25700 488.30 Mesotrophic - 23
Geneva FR/CH 46.45 372 153 309.7 580.1 88.58 Mesotrophic - 23
Great Slave CA 61.54 156 41 614 28 568 1171.29 Oligotrophic - 7
Hallwil CH 47.28 449 28 48 10.3 0.29 Mesotrophic - 23
Huron US/CA 44.80 176 59 229 59600 3516.40 Ultra-oligotrophic - 2
Lucerne CH 46.91 434 104 214 113.6 11.81 Oligotrophic - 7
Lugano CH/IT 46.01 271 134 288 49 6.57 Mesotrophic - 23
Maggiore CH/IT 45.95 193 177 372 213 37.70 Oligotrophic - 7
Michigan US 44.05 176 85 282 57800 4913.00 Ultra-oligotrophic - 2
Morat CH 46.93 429 24 45 21.6 0.52 Eutrophic - 68
Neuchâtel CH 46.91 429 64 152 218.3 13.97 Oligotrophic - 7
Ontario US/CA 43.64 74 86 244 18960 1630.56 Oligotrophic - 7
Peipsi EE/RU 58.68 30 7 15.3 3555 25.24 Eutrophic - 68
Sempach CH 47.14 504 44 87 14.5 0.64 Eutrophic - 68
Superior US/CA 47.94 183 147 406 82100 12068.70 Ultra-oligotrophic - 2
Thun CH 46.68 558 136 217 48.3 6.57 Ultra-oligotrophic - 2
Vänern SE 58.37 44 27 106 5450 147.15 Oligotrophic - 7
Vättern SE 58.53 89 40 120 1939 77.37 Ultra-oligotrophic - 2
Walen CH 47.12 419 105 150 23.2 2.44 Ultra-oligotrophic - 2
Zug CH 47.13 417 83 198 38.3 3.18 Eutrophic - 68
Zurich CH 47.30 406 49 133 88.2 4.32 Mesotrophic - 23
Table 2B.
Lake Lake SSWT trend (°C.decade−1) Winter air temperature trend (°C.year−1) Spring air temperature trend (°C.year-1) Summer air temperature trend (°C.year−1) Autumn air temperature trend (°C.year−1)
Annecy -0.14 0.02 0.04 0.05* 0.06*
Baikal NA -0.01 0.05* 0.04 0.02
Bienne NA 0.02 0.04 0.05* 0.06*
Bourget 0.42 0.02 0.04 0.05* 0.06*
Brienz NA 0.02 0.04 0.05* 0.06*
Constance 0.53 0.02 0.04 0.05* 0.06*
Erie 0.08 0.01 0.01 0.00 0.04
Geneva 0.11 0.02 0.04 0.05* 0.06*
Great Slave 0.15 0.06 -0.02 0.04 0.05
Hallwil NA 0.02 0.04 0.05* 0.06*
Huron 0.85 0.01 0.01 0.00 0.04
Lucerne NA 0.02 0.04 0.05* 0.06*
Lugano NA 0.02 0.04 0.05* 0.06*
Maggiore 0.31 0.02 0.04 0.05* 0.06*
Michigan 0.42 0.01 0.01 0.00 0.04
Morat NA 0.02 0.04 0.05* 0.06*
Neuchâtel NA 0.02 0.04 0.05* 0.06*
Ontario 0.33 0.01 0.01 0.00 0.04
Peipsi NA -0.01 0.03 0.04 0.06*
Sempach NA 0.02 0.04 0.05* 0.06*
Superior 1.16 0.01 0.01 0.00 0.04
Thun NA 0.02 0.04 0.05* 0.06*
Vänern 0.62 0.00 0.03 0.03 0.06*
Vättern 0.63 0.00 0.03 0.03 0.06*
Walen -0.33 0.02 0.04 0.05* 0.06*
Zug NA 0.02 0.04 0.05* 0.06*
Zurich NA 0.02 0.04 0.05* 0.06*

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