Medidas de Gestao das Pescarias Marinhas e Aquicultura 2019 The State of World Fisheries and Aquaculture 2018 | Page 58

PART 1 WORLD REVIEW
FIGURE 16
THE THREE TEMPORAL PATTERNS IN FISH LANDINGS, 1950–2015
FLUCTUATIONS AFTER REACHING A PLATEAU
4
20
72.6%
10
TONNES)
12
8
6
4
2
0
3
15
2
10
1
5
1950
1970
1990
Indian Ocean, Eastern
Indian Ocean, Western
2010
0
1950
1970
1990
Atlantic, Southwest
Atlantic, Eastern Central
Pacific, Western Central
CONTINUOUSLY INCREASING TREND
67.0%
2010
Pacific, Northwest
Pacific, Northeast
DECREASING TREND FOLLOWING A PEAK
3 000
20
62.8%
15
10
5
2 500
2 000
1 500
1 000
500
0
1950
1970
Atlantic, Northeast
Atlantic, Northwest
1990
62.8%
1950
2010
1970
Atlantic, Southeast
Mediterranean and Black Sea
Pacific, Southeast
1990
2010
Pacific, Southwest
NOTE: In each graph, the grey bar shows the percentage of stocks fished at biologically sustainable levels.
principal tuna species, 43 percent of the stocks
were estimated to be fished at biologically
unsustainable levels, while 57 percent were
fished within biologically sustainable levels
(maximally sustainably fished or underfished).
Thunnus maccoyii, Thunnus orientalis), skipjack
(Katsuwonus pelamis) and yellowfin (Thunnus
albacares) – were 4.8 million tonnes in 2015 and
have demonstrated a continuously increasing
trend since 1950. In 2015, among the seven
| 42 |