threats to reef. cyanide fishing blast fishing reef gleaning overfishing muro-ami

Threats to reef

Cyanide Fishing

Blast Fishing

Reef gleaning

Overfishing

Muro-ami

Reef check

Overview

• Established 1997 as part of the International year of the Reef (IYOR)

• Easy methodology ensures quick training with no prior knowledge necessary

• Results indicative of health of reef and anthropogenic impacts

• Now largest international coral reef monitoring program involving recreational divers and marine scientists

• Over 1500 trained volunteer divers surveying over 250 sites

• Result compiled by comparing fish and invertebrate species and substrate types which are indicators of the health of the reef

Reef check methodology:

• Site selection

• Site description

• Transect laying

• Fish survey belt

• Invertebrate survey (belt)

• Substrate survey (point sampling)

One Transect Line for Fish, Invertebrateand Substrate (100m Long)

1st Transect(20m)

2nd Transect(20m)

3rd Transect(20m)

4th Transect(20m)

5m spaces between transects

0 20 25 45 50 70 75 95 100

Transect

Fish Indicator species

Invertebrate indicator species

Substrate categories