FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food...

70
CH - 1131 Tolochenaz | Tél: +41 (0)21 802 20 75 Route de Genève | Le Boiron | C.P. 88 www.maisondelariviere.ch Route de Presinge 150 CH 1254 Jussy | Tél: +41 (0)22 546 68 87 www.hesge.ch/hepia [email protected] FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY Survey and investigations in lakes DR JEAN-FRANÇOIS RUBIN, Prof HES et Président de la Fondation

Transcript of FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food...

Page 1: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

CH - 1131 Tolochenaz | Tél: +41 (0)21 802 20 75

Route de Genève | Le Boiron | C.P. 88

www.maisondelariviere.ch

Route de Presinge 150

CH – 1254 Jussy | Tél: +41 (0)22 546 68 87

www.hesge.ch/hepia [email protected]

FISHES OF SWITZERLAND,

MANAGEMENT AND ECOLOGY

Survey and investigations in lakes

DR JEAN-FRANÇOIS RUBIN,

Prof HES et Président de la Fondation

Page 2: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Table of contents

Description of the habitat Lake type Formation Spatio-temporal evolution

Origin of the fish

Fishing in lakes

Monitoring Fishing statistics Gill nets Ecosounding Diving

• Skin diving • Submarine

Examples The Arctic charr in Lake Geneva The Whitefish in Lake Joux

Practice Gill net survey Analysis of statistical fishing data

Page 3: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Description of the habitat

Page 4: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Typology

Temporary pond= Water body that sometimes dries up

Pond = Water body without different thermic layers

Lake = water surface div ided into two water bodies with temperatures that vary according to the season

Page 5: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Typology based on fish composition

Page 6: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Typology based on flora composition

Charion Potamion

Lemnion Nymphaeion

Page 7: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Mountain lake

• Diatomae, green algae on the banks

• Some macrophyte

• Char, coregonids , trout

Page 8: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Low altitude lake

• Sometimes eutrophic, bottom with mud

• Phytoplancton frequent, macrophytes on the edges

• Cyprinids , perch, pike

Page 9: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution

Lake Bienne in 4’000 ans

Lake Geneva in 30-50’000 ans

Page 10: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Lake Geneva Origin

Page 11: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Dinosaurs never drank the water of Lake Geneva

Page 12: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

15’000 years ago, A geological revolution

Page 13: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Lake and glaciers

Page 14: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,
Page 15: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Lake habitat

Page 17: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Physicochemical parameters

Page 18: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Water temperature

Page 19: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Air temperature Situation in Switzerland

Années au-dessus de la moyenne 1961-1990 Tendance en Suisse 1864-2011 Tendance dans l’hémisphère nord (terres) 1864-2011

Années au-dessous de la moyenne 1961-1990 Tendance en Suisse 1961-2011

Page 20: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Lake water temperature

Page 21: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Oxygen

Page 22: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Oxygen W

ate

r d

en

sity

Water temperature°C

Late winter

Early winter

Summer

Page 23: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Oxygen

Oxygen concentration at -309 m Limit depth of oxygen 4 mg/l

Page 24: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Phophorus

Page 25: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Eutrophication

Page 26: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Eutrophication

Page 27: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Situation in Switzerland

Page 28: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution in Lake Geneva

Page 29: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Physicochemical monitoring of Lake

Page 30: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,
Page 31: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the lake shores

Veveyse 1886

today

Page 32: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the lake shores

Ouchy 1887

Ouchy today

Page 33: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the lake shores

Montreux vers 1860

Montreux today

Page 34: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the lake shores

Page 35: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Vegetation

Page 36: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Land planning

Page 37: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Origin of the fishes

Page 38: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Origin of the fish species in Lake Geneva

Native fish

Introduced fish

14 species

16 species

30 species

Page 39: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

How to research the origin ?

Historical data

Archeological data

Fishing statistics

Scientific s tudies

Page 40: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Example of introduced

species

Page 41: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Carp, Cyprinus carpio

During the Middle Ages, food allowed during fasting were:

• fish

• amphibians

• crayfish and …

• beavers !

Page 42: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

The Gold fish

Jeanne Antoinette Poisson, Marquise de Pompadour

Shéhérazade

1730 in France

Page 43: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

The Cat fish

From Canada….

To Lake Geneva

Page 44: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

The main groups

Salmonids

Cyprinids

The others…

Page 45: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the catch

Page 46: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the catch

For many years

Fish = Economical ressource

Unclear systematic

Many common names

Management based on economy

Page 47: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the catch

In Lake Geneva, 30 species

… only 5 commercially fished

Economical species… managed

Other species… less or not managed

Page 48: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the catch

Interest only for fishing

Action on one species

Stocking

Interest for biodivers ity

Action on the habitat

Renaturation

Page 49: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Evolution of the catch

Common biais in the management: Construction of fish ladder

Action after a pollution

Page 50: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fishing in lakes

Page 51: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fishing in lakes

Page 52: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fish monitoring

• Fishing statistics

• Gill nets

• Ecosounding

• Diving

Page 53: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fishing statistics

Page 54: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fishing statistics

Page 55: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fish monitoring

• Fishing statistics

• Gill nets

• Ecosounding

• Diving

Page 56: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Gill nets are selective depending on the mesh used

Page 57: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 58: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 59: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 60: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 61: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 62: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 63: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 64: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Gill nets

Page 65: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fish monitoring

• Fishing statistics

• Gill nets

• Ecosounding

• Diving

Page 66: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Ecosounding

Page 67: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Ecosounding

Page 68: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Ecosounding

Page 69: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Fish monitoring

• Fishing statistics

• Gill nets

• Ecosounding

• Diving

Page 70: FISHES OF SWITZERLAND, MANAGEMENT AND ECOLOGY · Carp, Cyprinus carpio During the Middle Ages, food allowed during fasting were: • fish ... The Gold fish Jeanne Antoinette Poisson,

Diving