DOCSLIB.ORG

Reef Fishes of Conservation Concern in South Australia

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Reef Fishes of Conservation Concern in South Australia Reef Fishes of Conservation Concern in South Australia A Field Guide In the end, we will conserve only what we love, we will love only what we understand, and we will understand only what we are taught. — Baba Dioum, 1968. by Janine L. Baker, Marine Ecologist SUPPORTED BY THE Adelaide and Mount Lofty Ranges Natural Resources Management Board Acknowledgments Thanks to the Adelaide and Mt Lofty Ranges Natural Resources Management (AMLR NRM) Board for supporting the development of this field guide. Particular thanks to Janet Pedler and Liz Millington at AMLR NRM Board for guidance, advice and support. I am grateful to DENR, especially Patricia von Baumgarten and Simon Bryars, for part- supporting my time in writing an e-book on South Australian fishes, from which much of the information in this field guide was derived. Thanks to all of the marine researchers and divers who generously provided images for this guide. In alphabetical order, they include: James Brook, Adrian Brown, Simon Bryars, Helen Crawford, Graham Edgar, Chris Hall, Barry Hutchins, Rudie Kuiter, Paul Macdonald, Phil Mercurio, David Muirhead, Kevin Smith and Rick Stuart-Smith. The keen eye and skill of these photographers have significantly contributed to the visual appeal and educational value of the work. A photograph from the internet has also been included, and thanks to the photographer Richard Ling for making his image of Girella tricuspidata available in the public domain. I am grateful to Graham Edgar, Scoresby Shepherd and Simon Bryars for taking the time to edit and proofread the draft text. Thanks to Céline Lawrence for formatting the draft booklet for web-based printing and hard copy printing. Thanks also to the Marine Life Society of South Australia for their ongoing commitment to public education about South Australian reef fishes. Last, but by no means least, thanks to those who read this guide: if your understanding and appreciation of potentially threatened South Australian reef fishes are thus heightened, then the guide will have served one of its main purposes. Citation: Baker, J.L. (2011) Reef Fishes of Conservation Concern in South Australia - Dedication A Field Guide. Booklet produced with support from the Adelaide and Mt Lofty Ranges This booklet is dedicated to my friends and colleagues Dr Scoresby Natural Resources Management Board, South Australia. Shepherd AO and Dr David Muirhead. Scoresby’s ecological perspicacity The text contained in this publication is intended as a source of information only. Whilst and life-long commitment to researching South Australia’s marine due care has been taken in compiling this information, contributors to this publication do environment are inspirational. I am also indebted to David Muirhead, not guarantee that the publication is without flaw, and therefore disclaim all liability for any errors or omissions, loss, damage, or consequences which may arise from any information whose commitment over several decades to photographing the fauna given in this publication. and flora of South Australia’s coastal waters, and widely sharing those This publication was made with the assistance of a grant from the Adelaide and Mount Lofty images, has enabled thousands of Australians to see and appreciate the Ranges Natural Resources Management Board. Views expressed are those of the author rich marine biodiversity of our temperate waters. and not necessarily those of the Board, and the Board accepts no responsibility for the accuracy of information contained herein. © J.L. Baker 2011 Cover photographs: K. Smith (top); D. Muirhead (middle); S. Bryars (bottom) Introduction The coastal waters of South Australia (SA) are home to dozens of • low reproductive output and limited dispersal of young; different reef fish species. This booklet provides information about 23 of those species, plus one multi-species group of related fishes, • specific population structure (including, in some species, harems that but excludes reef fishes known mainly from deeper continental shelf are dominated by a single male, and sex-change in individuals over and slope waters, such as Knifejaw Oplegnathus woodwardi and the time); potentially threatened Ocean Leatherjacket Nelusetta ayraudi. • ease of capture, and low survival probability when the fishes are The guide provides: caught and released. • a simple description of each species, including differences in colour These characteristics, particularly in combination, can decrease the and/or markings between males, females and juveniles; resilience of reef fish populations to threatening processes such as localised over-fishing, and habitat damage to nearshore reefs. Coupled • information on the distribution and habitat, and, for some species, with these on-going stresses, is lack of knowledge of the population sizes, notes on the diet and behaviour; biology and ecology of most of these species, and the increasing threat of impacts from the effects of global warming, such as ocean acidification, • a brief summary of the fisheries for each species at both warmer sea temperatures and altered wind, wave and current patterns. Commonwealth and State levels, including targeted fishing and bycatch; and This booklet aims to assist divers and snorkellers, fishers, marine students, and anyone else with an interest in reef fishes, to identify • discussion of the vulnerable characteristics of each species. South Australia’s reef fishes of potential conservation concern, and provides an up-to-date summary of knowledge about those species. It is The species in this guide were chosen because each has one or more hoped that the information herein will promote a greater understanding of various life history characteristics that increase their susceptibility to of, and appreciation for, these fishes. For example, large males of the population decline over time. Examples include : charismatic western blue groper, which can live for decades, start life as small green female “parrotfish”, regularly caught and chopped up for bait • existence over a relatively narrow depth range, with some species by some fishers who are unaware of the identity. Similarly, some of the being limited to reefs in shallow coastal waters; uncommon and less abundant leatherjacket species, when accidentally caught whilst fishers are targeting more desirable species, are purposely • territoriality / strong site association with the “home” reefs, and killed because they are seen as “damn leatherjackets which steal the limited movement away from those areas; bait”. It is hoped that this guide will help foster a greater awareness of the vulnerability of reef fish species in southern coastal waters, and assist • slow growth, large size and long life span (in the absence of fishing); with their conservation over the long term. • late age or size at maturity (i.e. late onset of reproduction); Harlequin Fish Othos dentex Description Reddish, orange, olive green or pink on dorsal side, with large yellow to green blotches on lower half of body, and bright blue spots or dashes on head and sides. Large red blotch under pectoral fin. Yellowish, orange or coppery coloured fins. Grows to about 76cm, but not commonly seen at that size. Distribution Occurs in Western Australia and South Australia, and less abundant in © S. Bryars the latter State. Previously, might have occurred in Port Phillip Bay in Victoria, based on specimens collected during late 19th century, but no longer occurs there. In SA, there are records from Encounter Bay through Diet to the eastern Great Australian Bight. Harlequin Fish is a “sit-and-wait” ambush predator, that feeds on various small fish species, and possibly also crustaceans and molluscs. Habitat Found on moderately exposed coastal rocky reefs, near reef drop-offs, over Fisheries high relief reef patches surrounded by flatter bottom, in caves, and under Caught in low numbers in shark fishery gill nets in Commonwealth- ledges. Also recorded around shipwrecks. The depth range is narrow, from managed fisheries, and in WA. An infrequent catch of lobster pots in WA a few metres to at least 30m deep, but usually seen below 10m. and SA. Caught mainly by anglers, charter boat fishers and spear fishers in WA and SA. Considered a prize catch for recreational fishers and usually retained when caught. Vulnerability Harlequin fish has a strong reef association and slow moving habit, and thus can easily be caught by lines, spears and other gear. It is a relatively long-lived species (> 40 years), and belongs to the Serranidae family, whose members maintain a specific ratio of males to females in the population, and numbers per group. Fishing may be the main threatening process, and can interrupt the population balance, yet there are few controls on numbers caught. Survival of caught and released fish is likely to be low. This species is considerably less abundant in SA than in WA. Habitat impacts, such as sedimentation and nutrient pollution on reefs may also adversely affect populations. © J. Brook Black-banded Seaperch Habitat Hypoplectrodes nigroruber Adults are found on sheltered to moderately exposed reefs, often in caves, crevices or under ledges. Also recorded on artificial reefs, around shipwrecks and under jetties. Known mainly from 3m to 35m deep, but bycatch data indicate that it may also occur deeper. Description Adult Pale yellowish, brownish, greyish or pink body. Four dark red, brown or black bands across body, and irregular spotting on dorsal surface. Grows to about 30cm. Distribution From NSW through to Kalbarri area in WA, including northern Tasmania. Recorded in South Australia mainly from the Great Australian Bight, the gulfs region, and Investigator Strait. Diet Black-banded Seaperch feeds on small fishes. © P. Mercurio Juvenile Fisheries Minor bycatch of commercial long-lines, and lobster pots. Caught incidentally by anglers; also caught by spear fishers, and a minor catch of charter boat fishers. This species is also taken in low numbers for the aquarium trade. Vulnerability This species has a strong reef association and slow moving habit and thus can easily be caught by spears and other gear.
Load more

Recommended publications
  • Wilderness Advisory Committee Annual Report 2011-12
    Wilderness Advisory Committee and Wilderness Protection Act 1992 ANNUAL REPORTS 1 July 2011 to 30 June 2012 Wilderness Advisory Committee Annual Report 2011-12 Wilderness Protection Act 1992 Annual Report 2011-12 For further information please contact: Executive Officer Wilderness Advisory Committee C/- Department of Environment, Water and Natural Resources GPO Box 1047 ADELAIDE SA 5001 Telephone: (08) 8124 4786 E-mail: [email protected] Website: www.environment.sa.gov.au ABN: 36 702 093 234 ISSN: 1832-9357 September 2012 _______________________________________________________________________________ Wilderness Advisory Committee Annual Report 2011-12 Page 2 TABLE OF CONTENTS LETTER OF TRANSMITTAL ....................................................................4 WILDERNESS ADVISORY COMMITTEE ANNUAL REPORT .................................5 PLANS AND OBJECTIVES ......................................................................5 OPERATIONS AND INITIATIVES ...............................................................5 ACHIEVEMENTS AND ACTIVITIES .........................................................5 WILDERNESS PROTECTION AREA MANAGEMENT PLANS .............................6 REQUESTS FOR ASSESSMENT TO THE WILDERNESS ADVISORY COMMITTEE .....7 ROLE, LEGISLATION AND STRUCTURE......................................................7 OBJECT OF THE WILDERNESS PROTECTION ACT .....................................7 ROLE OF THE COMMITTEE.................................................................7 FUNCTIONS OF THE WILDERNESS ADVISORY
    [Show full text]
  • Article Evolutionary Dynamics of the OR Gene Repertoire in Teleost Fishes
    bioRxiv preprint doi: https://doi.org/10.1101/2021.03.09.434524; this version posted March 10, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Article Evolutionary dynamics of the OR gene repertoire in teleost fishes: evidence of an association with changes in olfactory epithelium shape Maxime Policarpo1, Katherine E Bemis2, James C Tyler3, Cushla J Metcalfe4, Patrick Laurenti5, Jean-Christophe Sandoz1, Sylvie Rétaux6 and Didier Casane*,1,7 1 Université Paris-Saclay, CNRS, IRD, UMR Évolution, Génomes, Comportement et Écologie, 91198, Gif-sur-Yvette, France. 2 NOAA National Systematics Laboratory, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, U.S.A. 3Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C., 20560, U.S.A. 4 Independent Researcher, PO Box 21, Nambour QLD 4560, Australia. 5 Université de Paris, Laboratoire Interdisciplinaire des Energies de Demain, Paris, France 6 Université Paris-Saclay, CNRS, Institut des Neurosciences Paris-Saclay, 91190, Gif-sur- Yvette, France. 7 Université de Paris, UFR Sciences du Vivant, F-75013 Paris, France. * Corresponding author: e-mail: [email protected]. !1 bioRxiv preprint doi: https://doi.org/10.1101/2021.03.09.434524; this version posted March 10, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Abstract Teleost fishes perceive their environment through a range of sensory modalities, among which olfaction often plays an important role.
    [Show full text]
  • A Practical Handbook for Determining the Ages of Gulf of Mexico And
    A Practical Handbook for Determining the Ages of Gulf of Mexico and Atlantic Coast Fishes THIRD EDITION GSMFC No. 300 NOVEMBER 2020 i Gulf States Marine Fisheries Commission Commissioners and Proxies ALABAMA Senator R.L. “Bret” Allain, II Chris Blankenship, Commissioner State Senator District 21 Alabama Department of Conservation Franklin, Louisiana and Natural Resources John Roussel Montgomery, Alabama Zachary, Louisiana Representative Chris Pringle Mobile, Alabama MISSISSIPPI Chris Nelson Joe Spraggins, Executive Director Bon Secour Fisheries, Inc. Mississippi Department of Marine Bon Secour, Alabama Resources Biloxi, Mississippi FLORIDA Read Hendon Eric Sutton, Executive Director USM/Gulf Coast Research Laboratory Florida Fish and Wildlife Ocean Springs, Mississippi Conservation Commission Tallahassee, Florida TEXAS Representative Jay Trumbull Carter Smith, Executive Director Tallahassee, Florida Texas Parks and Wildlife Department Austin, Texas LOUISIANA Doug Boyd Jack Montoucet, Secretary Boerne, Texas Louisiana Department of Wildlife and Fisheries Baton Rouge, Louisiana GSMFC Staff ASMFC Staff Mr. David M. Donaldson Mr. Bob Beal Executive Director Executive Director Mr. Steven J. VanderKooy Mr. Jeffrey Kipp IJF Program Coordinator Stock Assessment Scientist Ms. Debora McIntyre Dr. Kristen Anstead IJF Staff Assistant Fisheries Scientist ii A Practical Handbook for Determining the Ages of Gulf of Mexico and Atlantic Coast Fishes Third Edition Edited by Steve VanderKooy Jessica Carroll Scott Elzey Jessica Gilmore Jeffrey Kipp Gulf States Marine Fisheries Commission 2404 Government St Ocean Springs, MS 39564 and Atlantic States Marine Fisheries Commission 1050 N. Highland Street Suite 200 A-N Arlington, VA 22201 Publication Number 300 November 2020 A publication of the Gulf States Marine Fisheries Commission pursuant to National Oceanic and Atmospheric Administration Award Number NA15NMF4070076 and NA15NMF4720399.
    [Show full text]
  • Pacific Plate Biogeography, with Special Reference to Shorefishes
    Pacific Plate Biogeography, with Special Reference to Shorefishes VICTOR G. SPRINGER m SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 367 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoo/ogy Smithsonian Studies in Air and Space Smithsonian Studies in History and Technology In these series, the Institution publishes small papers and full-scale monographs that report the research and collections of its various museums and bureaux or of professional colleagues in the world cf science and scholarship. The publications are distributed by mailing lists to libraries, universities, and similar institutions throughout the world. Papers or monographs submitted for series publication are received by the Smithsonian Institution Press, subject to its own review for format and style, only through departments of the various Smithsonian museums or bureaux, where the manuscripts are given substantive review.
    [Show full text]
  • Rodondo Island
    BIODIVERSITY & OIL SPILL RESPONSE SURVEY January 2015 NATURE CONSERVATION REPORT SERIES 15/04 RODONDO ISLAND BASS STRAIT NATURAL AND CULTURAL HERITAGE DIVISION DEPARTMENT OF PRIMARY INDUSTRIES, PARKS, WATER AND ENVIRONMENT RODONDO ISLAND – Oil Spill & Biodiversity Survey, January 2015 RODONDO ISLAND BASS STRAIT Biodiversity & Oil Spill Response Survey, January 2015 NATURE CONSERVATION REPORT SERIES 15/04 Natural and Cultural Heritage Division, DPIPWE, Tasmania. © Department of Primary Industries, Parks, Water and Environment ISBN: 978-1-74380-006-5 (Electronic publication only) ISSN: 1838-7403 Cite as: Carlyon, K., Visoiu, M., Hawkins, C., Richards, K. and Alderman, R. (2015) Rodondo Island, Bass Strait: Biodiversity & Oil Spill Response Survey, January 2015. Natural and Cultural Heritage Division, DPIPWE, Hobart. Nature Conservation Report Series 15/04. Main cover photo: Micah Visoiu Inside cover: Clare Hawkins Unless otherwise credited, the copyright of all images remains with the Department of Primary Industries, Parks, Water and Environment. This work is copyright. It may be reproduced for study, research or training purposes subject to an acknowledgement of the source and no commercial use or sale. Requests and enquiries concerning reproduction and rights should be addressed to the Branch Manager, Wildlife Management Branch, DPIPWE. Page | 2 RODONDO ISLAND – Oil Spill & Biodiversity Survey, January 2015 SUMMARY Rodondo Island was surveyed in January 2015 by staff from the Natural and Cultural Heritage Division of the Department of Primary Industries, Parks, Water and Environment (DPIPWE) to evaluate potential response and mitigation options should an oil spill occur in the region that had the potential to impact on the island’s natural values. Spatial information relevant to species that may be vulnerable in the event of an oil spill in the area has been added to the Australian Maritime Safety Authority’s Oil Spill Response Atlas and all species records added to the DPIPWE Natural Values Atlas.
    [Show full text]
  • Cirrhitidae 3321
    click for previous page Perciformes: Percoidei: Cirrhitidae 3321 CIRRHITIDAE Hawkfishes by J.E. Randall iagnostic characters: Oblong fishes (size to about 30 cm), body depth 2 to 4.6 times in standard Dlength. A fringe of cirri on posterior edge of anterior nostril. Two indistinct spines on opercle. A row of canine teeth in jaws, the longest usually anteriorly in upper jaw and half-way back on lower jaw; a band of villiform teeth inside the canines, broader anteriorly (in lower jaw only anteriorly). One or more cirri projecting from tips of interspinous membranes of dorsal fin. Dorsal fin continuous, with X spines and 11 to 17 soft rays, notched between spinous and soft portions; anal fin with III spines and 5 to 7 (usually 6) soft rays; pectoral fins with 14 rays, the lower 5 to 7 rays unbranched and usually enlarged, with the membranes deeply incised; pelvic fins with I spine and 5 soft rays. Principal caudal-fin rays 15. Branchiostegal rays 6. Scales cycloid. Swimbladder absent. Vertebrae 26. Colour: variable with species. cirri lower pectoral-fin rays thickened and unbranched Remarks: The hawkfish family consists of 10 genera and 38 species, 33 of which occur in the Indo-Pacific region; 19 species are found in the Western Central Pacific. Habitat, biology, and fisheries: Cirrhitids are bottom-dwelling fishes of coral reefs or rocky substrata; the majority occur in shallow water. They use their thickened lower pectoral-fin rays to wedge themselves in position in areas subject to surge. All species are carnivorous, feeding mainly on benthic crustaceans.
    [Show full text]
  • New Zealand Fishes a Field Guide to Common Species Caught by Bottom, Midwater, and Surface Fishing Cover Photos: Top – Kingfish (Seriola Lalandi), Malcolm Francis
    New Zealand fishes A field guide to common species caught by bottom, midwater, and surface fishing Cover photos: Top – Kingfish (Seriola lalandi), Malcolm Francis. Top left – Snapper (Chrysophrys auratus), Malcolm Francis. Centre – Catch of hoki (Macruronus novaezelandiae), Neil Bagley (NIWA). Bottom left – Jack mackerel (Trachurus sp.), Malcolm Francis. Bottom – Orange roughy (Hoplostethus atlanticus), NIWA. New Zealand fishes A field guide to common species caught by bottom, midwater, and surface fishing New Zealand Aquatic Environment and Biodiversity Report No: 208 Prepared for Fisheries New Zealand by P. J. McMillan M. P. Francis G. D. James L. J. Paul P. Marriott E. J. Mackay B. A. Wood D. W. Stevens L. H. Griggs S. J. Baird C. D. Roberts‡ A. L. Stewart‡ C. D. Struthers‡ J. E. Robbins NIWA, Private Bag 14901, Wellington 6241 ‡ Museum of New Zealand Te Papa Tongarewa, PO Box 467, Wellington, 6011Wellington ISSN 1176-9440 (print) ISSN 1179-6480 (online) ISBN 978-1-98-859425-5 (print) ISBN 978-1-98-859426-2 (online) 2019 Disclaimer While every effort was made to ensure the information in this publication is accurate, Fisheries New Zealand does not accept any responsibility or liability for error of fact, omission, interpretation or opinion that may be present, nor for the consequences of any decisions based on this information. Requests for further copies should be directed to: Publications Logistics Officer Ministry for Primary Industries PO Box 2526 WELLINGTON 6140 Email: [email protected] Telephone: 0800 00 83 33 Facsimile: 04-894 0300 This publication is also available on the Ministry for Primary Industries website at http://www.mpi.govt.nz/news-and-resources/publications/ A higher resolution (larger) PDF of this guide is also available by application to: [email protected] Citation: McMillan, P.J.; Francis, M.P.; James, G.D.; Paul, L.J.; Marriott, P.; Mackay, E.; Wood, B.A.; Stevens, D.W.; Griggs, L.H.; Baird, S.J.; Roberts, C.D.; Stewart, A.L.; Struthers, C.D.; Robbins, J.E.
    [Show full text]
  • Appendices Appendices
    APPENDICES APPENDICES APPENDIX 1 – PUBLICATIONS SCIENTIFIC PAPERS Aidoo EN, Ute Mueller U, Hyndes GA, and Ryan Braccini M. 2015. Is a global quantitative KL. 2016. The effects of measurement uncertainty assessment of shark populations warranted? on spatial characterisation of recreational fishing Fisheries, 40: 492–501. catch rates. Fisheries Research 181: 1–13. Braccini M. 2016. Experts have different Andrews KR, Williams AJ, Fernandez-Silva I, perceptions of the management and conservation Newman SJ, Copus JM, Wakefield CB, Randall JE, status of sharks. Annals of Marine Biology and and Bowen BW. 2016. Phylogeny of deepwater Research 3: 1012. snappers (Genus Etelis) reveals a cryptic species pair in the Indo-Pacific and Pleistocene invasion of Braccini M, Aires-da-Silva A, and Taylor I. 2016. the Atlantic. Molecular Phylogenetics and Incorporating movement in the modelling of shark Evolution 100: 361-371. and ray population dynamics: approaches and management implications. Reviews in Fish Biology Bellchambers LM, Gaughan D, Wise B, Jackson G, and Fisheries 26: 13–24. and Fletcher WJ. 2016. Adopting Marine Stewardship Council certification of Western Caputi N, de Lestang S, Reid C, Hesp A, and How J. Australian fisheries at a jurisdictional level: the 2015. Maximum economic yield of the western benefits and challenges. Fisheries Research 183: rock lobster fishery of Western Australia after 609-616. moving from effort to quota control. Marine Policy, 51: 452-464. Bellchambers LM, Fisher EA, Harry AV, and Travaille KL. 2016. Identifying potential risks for Charles A, Westlund L, Bartley DM, Fletcher WJ, Marine Stewardship Council assessment and Garcia S, Govan H, and Sanders J.
    [Show full text]
  • Biogenic Habitats on New Zealand's Continental Shelf. Part II
    Biogenic habitats on New Zealand’s continental shelf. Part II: National field survey and analysis New Zealand Aquatic Environment and Biodiversity Report No. 202 E.G. Jones M.A. Morrison N. Davey S. Mills A. Pallentin S. George M. Kelly I. Tuck ISSN 1179-6480 (online) ISBN 978-1-77665-966-1 (online) September 2018 Requests for further copies should be directed to: Publications Logistics Officer Ministry for Primary Industries PO Box 2526 WELLINGTON 6140 Email: [email protected] Telephone: 0800 00 83 33 Facsimile: 04-894 0300 This publication is also available on the Ministry for Primary Industries websites at: http://www.mpi.govt.nz/news-and-resources/publications http://fs.fish.govt.nz go to Document library/Research reports © Crown Copyright – Fisheries New Zealand TABLE OF CONTENTS EXECUTIVE SUMMARY 1 1. INTRODUCTION 3 1.1 Overview 3 1.2 Objectives 4 2. METHODS 5 2.1 Selection of locations for sampling. 5 2.2 Field survey design and data collection approach 6 2.3 Onboard data collection 7 2.4 Selection of core areas for post-voyage processing. 8 Multibeam data processing 8 DTIS imagery analysis 10 Reference libraries 10 Still image analysis 10 Video analysis 11 Identification of biological samples 11 Sediment analysis 11 Grain-size analysis 11 Total organic matter 12 Calcium carbonate content 12 2.5 Data Analysis of Core Areas 12 Benthic community characterization of core areas 12 Relating benthic community data to environmental variables 13 Fish community analysis from DTIS video counts 14 2.6 Synopsis Section 15 3. RESULTS 17 3.1
    [Show full text]
  • 40 Great Short Walks
    SHORT WALKS 40 GREAT Notes SOUTH AUSTRALIAN SHORT WALKS www.southaustraliantrails.com 51 www.southaustraliantrails.com www.southaustraliantrails.com NORTHERN TERRITORY QUEENSLAND Simpson Desert Goyders Lagoon Macumba Strzelecki Desert Creek Sturt River Stony Desert arburton W Tirari Desert Creek Lake Eyre Cooper Strzelecki Desert Lake Blanche WESTERN AUSTRALIA WESTERN Outback Great Victoria Desert Lake Lake Flinders Frome ALES Torrens Ranges Nullarbor Plain NORTHERN TERRITORY QUEENSLAND Simpson Desert Goyders Lagoon Lake Macumba Strzelecki Desert Creek Gairdner Sturt 40 GREAT SOUTH AUSTRALIAN River Stony SHORT WALKS Head Desert NEW SOUTH W arburton of Bight W Trails Diary date completed Trails Diary date completed Tirari Desert Creek Lake Gawler Eyre Cooper Strzelecki ADELAIDE Desert FLINDERS RANGES AND OUTBACK 22 Wirrabara Forest Old Nursery Walk 1 First Falls Valley Walk Ranges QUEENSLAND A 2 First Falls Plateau Hike Lake 23 Alligator Gorge Hike Blanche 3 Botanic Garden Ramble 24 Yuluna Hike Great Victoria Desert 4 Hallett Cove Glacier Hike 25 Mount Ohlssen Bagge Hike Great Eyre Outback 5 Torrens Linear Park Walk 26 Mount Remarkable Hike 27 The Dutchmans Stern Hike WESTERN AUSTRALI WESTERN Australian Peninsula ADELAIDE HILLS 28 Blinman Pools 6 Waterfall Gully to Mt Lofty Hike Lake Bight Lake Frome ALES 7 Waterfall Hike Torrens KANGAROO ISLAND 0 50 100 Nullarbor Plain 29 8 Mount Lofty Botanic Garden 29 Snake Lagoon Hike Lake 25 30 Weirs Cove Gairdner 26 Head km BAROSSA NEW SOUTH W of Bight 9 Devils Nose Hike LIMESTONE COAST 28 Flinders
    [Show full text]
  • Working Together Our Achievements 2009 – 2016
    Working together Our achievements 2009 – 2016 Photo and logos needed 1 2016© Department of Environment, Water and Natural Resources ISBN: 978-1-921595-24-0 This document may be reproduced in whole or part for the purpose of study or training, subject to the inclusion of an acknowledgment of the source and to its not being used for commercial purposes or sale. Reproduction for purposes other than those given above requires the prior written permission of the Kangaroo Island Natural Resources Management Board. All images within this document are credited to Natural Resources Kangaroo Island unless stated otherwise. Front cover image: Travis Bell and Grant Flanagan inspecting crop health as part of the AgKI Potential Project. Work outline in this document is funded by: 2 2 Message from the Presiding Member 4 Message from the Regional Director 5 Socio-economic Snapshot 6 Culture & Heritage Snapshot 8 Flora Snapshot 10 Fauna Snapshot 14 Marine & Coastal Snapshot 18 Freshwater Snapshot 22 Land Condition Snapshot 26 Biosecurity & Pests Snapshot 30 Climate Change Snapshot 34 Community Engagement & Capacity Building Snapshot 38 A New NRM Plan for KI 42 3 3 MESSAGE FROM THE PRESIDING MEMBER The inaugural Kangaroo Island Natural Resources 2009, fencing off native vegetation, installing creek crossings Management (NRM) Plan 2009–2019 was prepared when and liming acid soils. Kangaroo Island was declared one of eight South Australian However, some systems are out of balance, particularly where NRM regions under the Natural Resources Management Act human activities have tipped the scales, and many plant 2004, and while Kangaroo Island may be the smallest region and animal species continue to decline in numbers on the geographically, it is certainly one of the most precious! island, including top order predators such as the Rosenberg’s The Kangaroo Island community is deeply connected to goanna and osprey.
    [Show full text]
  • Rock Blackfish (Girella Elevata)
    I & I NSW WILD FISHERIES RESEARCH PROGRAM Rock Blackfish (Girella elevata) EXPLOITATION STATUS UNDEFINED A coastal rocky foreshore species fished by recreational line and spear fishers. Almost no biological or fishery data are currently available for this species however a biological study is underway. SCIENTIFIC NAME STANDARD NAME COMMENT Girella elevata rock blackfish Also called black drummer. Kyphosus sydneyanus silver drummer Girella elevata Image © Bernard Yau Background Rock blackfish (Girella elevata) occur from Rock blackfish are powerful swimmers, and are southern Queensland to eastern Tasmania sought by recreational fishers because of their and also around Lord Howe Island and New fighting ability and good eating qualities. They Zealand. They are closely related to luderick are omnivorous, and eat a wide range of species (Girella tricuspidata) and look similar, but do including crabs, cunjevoi and algae. Rock not have the vertical dark bars characteristic blackfish can grow to a maximum size of about of luderick. Juvenile rock blackfish are light 65 cm in length and 9 kg in weight, however grey-brown in colour and commonly occur in fish greater than 3 kg are considered rare. It is rock pools in the intertidal zone. Adult rock possible that the stock has been significantly blackfish are a uniform dark blue-black in depleted by fishing, but there is very little colour and live in the wave surge zones around biological or fishery data on which to base an rocky headlands and offshore islands, generally assessment. A PhD study of the biology of and where there is a lot of environmental structure fishery for rock blackfish commenced in 2010.
    [Show full text]