biodiversity and sustainable exploitation of marine biological resources jean-yves perrot
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Biodiversity and sustainable exploitation of marine biological resources Jean-Yves PERROT IFREMER. Biodiversity and sustainable exploitation of marine biological resources. INTRODUCTION. Giuseppe Arcimboldo, 1527-1593. Three levels in biodiversity. Ecology. Species. Genetic. - PowerPoint PPT PresentationTRANSCRIPT
Biodiversity and sustainable exploitation of marine biological resources
Jean-Yves PERROTIFREMER
Biodiversity and sustainable exploitation of marine biological resources
INTRODUCTION
Giuseppe Arcimboldo, 1527-1593
Ecology
Species
GeneticFrom B. ChevassusMNHN, Paris
Three levels in biodiversity
The marine ecosystem
Mytilids, worms and bacteria by 1700m depthIfremer
A bathial scene by 600m depthWhitman college
Source: Sainsbury 2004
Red tides by dinoflagellatesUnprocessed wastes
Crepidula from N-E America (GB, 1872)
Rapana from the Pacific(Black Sea, 1940)
Ocinebrellus from Korea(France, 1995)
Mnemiopsis from America(Black sea, 1980)
Global resources from fisheries reached a plateau since 1985Includes inland productions
Collapse of peruvian anchovy
Aqua-culture
Fisheries
1950
60
From FAO : The State of World Fisheries and Aquaculture, 2004
Mill
ions
tons
Small pelagic share increases
Stock deterioration
Technology developments 1965 1970 1975 1980 1985 1990 1995 2000 1955 1960
0
20
40
80
140
120
100
Aquaculture share increases
Fish stocks are exploited at their maximum
{ 7755%%
50 %
Source : FAO (Garcia, Grainger & De Leiva, 2004)
40 30 20 10 0
R
D
O
F
M
U
1% : Recovering
7% : Depleted
16% : Overexploited
52% : Fully exploited
21% : Moderately exploited
3% : Underexploited
Biodiversity studies need sea- and land-based infrastructures
Thank you for your attention!