Impact of fishing activities on the population dynamics of European whitefish in four peri-alpine lakes

Special issue - Biology and Management of Coregonid Fishes - 2023

Open Access

Table 1

Main physical, trophic, and fishery characteristics of the four studied lakes between 2000 and 2020.

	Lake Geneva	Lake Neuchâtel	Lake Bourget	Lake Annecy
Surface (km²)	581.3	218.3	44.5	27.6
Maximum depth (m)	309	152	147	82
Current trophic status	Meso-trophic¹	Oligo-trophic²	Oligo-mesotro-phic³	Oligotr o-phic⁴
Relative part of commercial fishery landings compared to total landings (expressed as the mean percentage of commercial fisheries landings over total landings)	99%	93%	93%	59%
Total annual landings ranges (t)	82.0; 761.0	16.5; 160.0	6.2; 78.4	5.3; 17.4
Number of commercial fishermen licenses in 2020	138	31	10	2
Fishing effort ranges, measured as the annual number of drifting nets^*	10254; 54201	1109; 2381	399; 5700	648; 1605

¹ Tran-Khac et al. (2021).

² OFEV (2016).

³Jacquet et al. (2022).

⁴Frossard et al. (2022).

^*Except for Lake Neuchâtel, for which the fishing effort is measured as the number of fishing days targeting whitefish.

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