Biophysical Survey of Mafia Island Marine Reserves

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Invertebrate Abundance Invertebrate abundance was assessed alongside benthic composition and reef fish abundance. Surveyors recorded the number of target invertebrates within a 5m box along a 25m transect set at a constant depth. Invertebrate abundance was collected using the categories listed below in Table 3. Table 3. Invertebrate species categories used for abundance data collection Common Name Latin Name DIADEMA Gernera: Diadema spp. OTHER URCHINS Class: Echinoidea EDIBLE SEA CUCUMBER Six species in the familes Holothuridae spp.and Stichopodidae spp. NON TARGET CUCUMBER All other species of sea cucumbers OCTOPUS Order: Octopoda SQUID/CUTTLEFISH Order: Teuthoidea / Sepiidea NUDIBRANCH Order: Nudibranchia LOBSTER Family: Palinuridae CROWN OF THORN Acanthaster planci OTHER STARFISH Class: Asteroidea GIANT CLAM Family: Tridacnidae COWRIE Family: Cypraeidae TRITON TRUMPET SHELL Species: Charonia tritonis BULL MOUTH HELMET SHELL Species: Cypraecassis rufa Reef Fish Abundance DRUPELLA Genera: Drupella Reef fish abundance data were collected in conjunction with benthic composition and invertebrate abundance. Surveyors recorded the number of target reef fish within a 5m box along a 25m transect set at a constant depth. Transects were laid at various depths from 4 to 12 m. Survey depths depended on the topography of individual reefs. Fish abundance data were collected during the laying of the transect line to minimise
disturbance. Where this was not possible surveyors waited for 5 minutes away from the transect in order to allow fish to return. Abundance of fish was recorded for the species listed in Table 4. Table 4. Fish species list used for collection of abundance data collection. Common name Latin name Common name Latin name BUTTERLYFISH ANGELFISH Lined Butterflyfish Chaetodon lineolatus Three spot Angelfish Apolemichthys trimaculatus Saddleback Butterflyfish Chaetodon falcula Two-spined / Dusky Angelfish Centropyge bispinosus Black-backed Butterflyfish Chaetodon melannotus Regal Angelfish Pygoplites diacanthus Vagabond Butterflyfish Chaetodon vagabundus Emperor Angelfish Pomacanthus imperator Threadfin Butterflyfish Chaetodon auriga Semicircle angelfish Pomacanthus semicirculatus Teardrop Butterflyfish Chaetodon unimaculatus Ear-spot angelfish Pomacanthus chrysurus Bennett’s Butterflyfish Chaetodon bennetti Yellowbar angelfish Pomacanthus maculosus Zanzibar Butterflyfish Chaetodon zanzibariensis SURGEONFISH Crown Butterflyfish Chaetodon paucifasciatus Moorish Idol Zanclus cornutus Klein’s Butterflyfish Chaetodon kleinii Brushtail tang Zebrasoma scopes Yellowhead Butterflyfish Chaetodon xanthocephalus Convict surgeonfish Acanthus triostegus Raccoon Butterflyfish Chaetodon lunula Powder-blue surgeonfish Acanthurus leucosternon Spotted Butterflyfish Chaetodon guttatissimus Palette surgeonfish Paracanthus hepatus Somali Butterflyfish Chaetodon leucopleura Black surgeonfish Acanthurus gahhm Redfin Butterflyfish Chaetodon trifasciatus Thompson’s surgeonfish Acanthurus thompsoni Meyer’s Butterflyfish Chaetodon meyeri Lietenant surgeonfish Acanthurus tennenti Chevroned Butterflyfish Chaetodon trifascialus Striped bristletooth Ctenochaetus striatus Blackburn’s Butterflyfish Chaetodon blackburni Goldring bristletooth Ctenochaetus strigosus Black Pyramid Butterflyfish Hemitaurichthys zoster Sailfin Tang Zerasoma desjardinii Big Long-nosed Butterflyfish Forcipiger longirostris Two spot bristletooth Ctenochaetus binotatus Longfin Bannerfish Heniochus acuminatus GOATFISH Masked Bannerfish Heniochus monoceros Yellowsaddle goatfish Parupeneus cyclostomus WRASSE Longbarbel goatfish Parupeneus macronema Slingjaw wrasse Epibulus insidiator Dash-and-dot goatfish Parupeneus barberinus Checkerboard wrasse Haliochoeres hortulanus TRIGGERFISH Balistidae Indian Ocean Bird wrasse Gomphosus caeruleus GROUPERS Serranidae Goldbar wrasse Thalassoma hebraicum PARROTFISH Scaridae Sixbar wrasse Thalassoma hardwicke RABBITFISH Siganidae UNICORNFISH Nasinae BATFISH/SPADEFISH Ephippidae
Page 1: Frontier Tanzania Environmental Res
Page 4 and 5: Suggested Technical Report citation
Page 6 and 7: Executive Summary Major Findings
Page 8 and 9: price it fetches may be contributin
Page 10 and 11: IV. RESULTS A. Nyororo Island Marin
Page 12 and 13: I. INTRODUCTION Project Aim To cond
Page 14 and 15: The reserves were established under
Page 16 and 17: III. METHODS A. Field Methods 1. Re
Page 18 and 19: Ground Proofing Methodology (Low Re
Page 22 and 23: Commercially Targeted Fish The meth
Page 24 and 25: Indian Ocean Bird wrasse Gomphosus
Page 26 and 27: Several areas of coral reef habitat
Page 28 and 29: area, the most extensive continuous
Page 30 and 31: Average abundance (+/- SE) 30 25 20
Page 32 and 33: Average abundance (+/- SE) 3 2.5 2
Page 34 and 35: stop off or shelter. Boats from the
Page 36 and 37: 2. Coral Reef Habitat a) Benthic Co
Page 42 and 43: 68% 5% 18% 2% 0% 1% 0% 6% 0% 0% Tha
Page 44 and 45: on Mbarakuni. At times of good weat
Page 46 and 47: edge is visible at around 10m deep.
Page 50 and 51: 97% 0% Figure 28. Average percentag
Page 52 and 53: c) Invertebrate abundance Invertebr
Page 54 and 55: lobster fishing. A foreign financed
Page 56 and 57: (Chaetodon trifascialus) are closel
Page 58 and 59: transects. Commercial fish species
Page 60 and 61: damage at present, but if further u
Page 62 and 63: VI. Appendices Appendix 1. Fish spe
Page 64 and 65: Whitespotted Epinephelus Grouper ca

Biophysical Survey of Mafia Island Marine Reserves

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