of Seamounts with MPAs definitions origin importance oceanography e cology conservation case studies Albrecht Götz Sven Kerwath Anthony Bernard and Toufiek Samaai Definitions Seamounts ID: 547122
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Slide1
Conservation of Seamounts with MPAs
definitionsoriginimportanceoceanographyecologyconservationcase studies
Albrecht Götz, Sven Kerwath, Anthony Bernard and Toufiek SamaaiSlide2
Definitions –
Seamounts
,
Knolls
and
Pinnacles
continental
shelf
abyssal plain
1000m
SEAMOUNT
PINNACLE
KNOLL
Cone (mount)
Table (guyot)Slide3
Origin – SeamountsSlide4
Global distributionConsidered a biomeSize of Australia or the rainforest biome
Most under-sampled biomeTargeted by offshore fisheriesImportance - SeamountsSlide5
Nutrient-rich
upwelling may support higher productivity at seamounts compared to abyssal/open water surroundings
Current amplification benefits resident animals
Taylor Column increases residency time of plankton bloomOceanography - Seamounts
Taylor Column
(southern hemisphere)Slide6
Unique cold-water reef ecosystem
High productivity through upwellingIncreased biodiversity and biomass of plankton, invertebrates, fish, mammals and birdsPartly also due to aggregation functionBiogeography of ‘submarine islands’ and endemismEcology - SeamountsLophelia pertusaorange roughySlide7
`
Extremely vulnerable to disturbances such as trawlingConservation hampered by international watersConservation - SeamountsSlide8
Conservation - SeamountsSlide9Slide10
Pinnacles of the Alphard Bank on the Agulhas Bank, South African Exclusive Economic Zone (EEZ)Case Study - PinnaclesSlide11
Cape Town
Alphard BankA g u l h a s B a n kSlide12Slide13Slide14Slide15
Fish Diversity
Alphard BankSN
inshoreoffshoreSlide16
Seamount (Knoll) of Walters Shoal on the Madagascar Ridge, International WatersCase Study – Seamounts/KnollsSlide17
Madagascar Ridge
EastMadagascarCurrent
MozambiqueCurrentSlide18Slide19Slide20
Gymnothorax parini
giant yellowtailcoralline algaeChaetodon dolosusSlide21
Galapagos
Shark(Carcharhinus galapagensis)Slide22
Conservation of Seamounts with MPAs
Thanks!
Albrecht Götz, Sven Kerwath, Anthony Bernard and Toufiek Samaai