marine ecosystem 36 Ecosystems 23 Indicator indicator 6 biodiversity 6 protected area 6 China 5 Reefs 5 community structure 5 conservation management 5 environmental protection 5 marine environment 5 Atlantic Ocean 4 Biodiversity 4 Conservation 4 Fish 4 Fisheries 4 Marine ecosystems 4 Pacific Ocean 4 Phytoplankton 4 anthropogenic effect 4 biomass 4 coastal zone 4 ecological approach 4 fish 4 marine policy 4 Anthozoa 3 Bacillariophyta 3 Conservation planning 3 Isotopes 3 Marine protected area 3