Sardine Run 2020 General Information
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Research Underway: Bangarang Data Entry Program ~ Users' Manual
RU: Bangarang 1.0 Users Manual Keen 2013 Research Underway: Bangarang Data Entry Program ~ Users’ Manual Developed by Eric Keen Scripps Institution of Oceanography Summer 2013 [email protected] CONTENTS_________________________________________________________________________________________ Introduction ………………………………………. 1 Where to Download………………………………. 1 Getting Started……………………………………. 1 Output: Overview………………………………… 3 Output: Standard Fields……………………....... 4 Output: Event Details ………………………….. 5 Appendix 1: Example output………………........ 24 Appendix 2: RUB Abbreviations……………….. 25 INTRODUCTION____________________________________________________________________________________ RU Bangarang (RUB) is a data entry program designed specifically for my dissertation work in the northern Great Bear Fjordland. It is designed to be an easily viewed, intuitive, button-based way of entering observations while letting the computer take care of associating each entry with the necessary but intensive logistical data (time, gps coordinates, current conditions, observers on board, effort status, etc.). The forms are designed to be navigated by using the mouse, using the tab key, or using the touch screen. It is also designed to output these data in a single file that can serve as both a raw record of the day's work and a single source from which to draw certain types of data (e.g. locations of hydrophone recordings and the locations of sighted whales). These, at least, were my intentions. The program was written in Visual Basic 2010 Express and published as a stand-alone executable file (.exe) for Windows. The program outputs text files to a folder it creates on the C directory of your computer. In addition to making this program available to others, I have provided the project files for the program, as well as my R scripts for analyzing the output text files, on my website. -
Robot Swarm Based on Ant Foraging Hypothesis with Adaptive Lèvy Flights
Robot Swarm based on Ant Foraging Hypothesis with Adaptive Lèvy Flights A thesis submitted to the Graduate School of the University of Cincinnati in partial fulfillment of the requirements of the degree of Master of Science in the Department of Mechanical and Materials Engineering of the College of Engineering and Applied Sciences by Aditya Milind Deshpande B.E. University of Pune August 2014 Committee Chair: Dr. Manish Kumar, Ph.D. Abstract Robot Swarm based on Ant Foraging Hypothesis with Adaptive Levy´ Flights by Aditya Milind Deshpande Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Master of Science Degree in Department of Mechanical and Materials Engineering University of Cincinnati June 2017 Design of robot swarms inspired by self-organization in social insect groups is currently an active research area with a diverse portfolio of potential applications. This thesis is focused on the development of control laws for swarm of robots inspired by ant foraging. Particularly, this work presents control laws for efficient area coverage by a robot swarm in a 2D spatial domain, inspired by the unique dynamical characteristics of ant foraging. The novel idea pursued in the effort is that dynamic, adaptive switching between Brownian motion and Levy´ flight in the stochastic component of the search increases the efficiency of the search and area coverage. The study is motivated by behaviors of certain biological studies who exhibit searching patterns modeled using Levy´ flight. Influence of different pheromone (the virtual chemotactic agent that drives the foraging) threshold values for switching between Levy´ flights and Brownian motion is studied using two performance metrics - area coverage and visit entropy. -
NPOA Sharks Booklet.Indd
National Plan of Action for the Conservation and Management of Sharks (NPOA-Sharks) November 2013 South Africa Department of Agriculture, Forestry and Fisheries Private Bag X2, Rogge Bay, 8012 Tel: 021 402 3911 Fax: +27 21 402 3364 www.daff.gov.za Design and Layout: FNP Communications and Gerald van Tonder Photographs courtesy of: Department of Agriculture, Forestry and Fisheries (DAFF), Craig Smith, Charlene da Silva, Rob Tarr Foreword South Africa’s Exclusive Economic Zone is endowed with a rich variety of marine living South Africa is signatory to the Code of Conduct for Responsible Fisheries – voluntarily agreed to by members of the United Nations Food and Agriculture Organisation (FAO) – and, as such, is committed to the development and implementation of National Plans of Action (NPOAs) as adopted by the twenty-third session of the FAO Committee on Fisheries in February 1999 and endorsed by the FAO Council in June 1999. Seabirds – aimed at reducing incidental catch and promoting the conservation of seabirds Fisheries and now regularly conducts Ecological Risk Assessments for all the commercial practices. Acknowledging the importance of maintaining a healthy marine ecosystem and the possibility of major detrimental effects due to the disappearance of large predators, South from the list of harvestable species. In accordance with international recommendations, South Africa subsequently banned the landing of a number of susceptible shark species, including oceanic whitetip, silky, thresher and hammerhead sharks. improves monitoring efforts for foreign vessels discharging shark products in its ports. To ensure long-term sustainability of valuable, but biologically limited, shark resources The NPOA-Sharks presented here formalises and streamlines ongoing efforts to improve conservation and management of sharks caught in South African waters. -
Shark Catch Trends and Effort Reduction in the Beach Protection Program, Kwazulu-Natal, South Africa (Elasmobranch Fisheries - Oral)
NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHOR(S) Northwest Atlantic Fisheries Organization Serial No. N4746 NAFO SCR Doc. 02/124 SCIENTIFIC COUNCIL MEETING – SEPTEMBER 2002 Shark Catch Trends and Effort Reduction in the Beach Protection Program, KwaZulu-Natal, South Africa (Elasmobranch Fisheries - Oral) S.F.J. Dudley Natal Sharks Board, P. Bag 2, Umhlanga Rocks, 4320, South Africa E-mail: [email protected] Abstract Shark nets have been set off the beaches of KwaZulu-Natal, South Africa, since 1952, to minimise risk of shark attack. Reliable catch data for each of the 14 shark species commonly caught are available from 1978 only. The nets fish in fixed localities very close to shore and there is an absence of fisheries independent data for most species. There is uncertainty about factors such as localised stock depletion and philopatry. Catch rates of seven species show a significant decline, but this figure drops to four with the exclusion of the confounding effects of the annual sardine run. Of the four, two are caught in very low numbers (Java Carcharhinus amboinensis and great hammerhead Sphyrna mokarran) and it is probable that any decline in population size reflects either local depletion or additional exploitation elsewhere. The other two species (blacktip C. limbatus and scalloped hammerhead S. lewini) are caught in greater numbers. C. limbatus appears to have been subject to local depletion. Newborn S. lewini are captured by prawn trawlers and discarded, mostly dead, adding to pressure on this species. As a precautionary measure, and in the absence of clarity on the question of stock depletion, in September 1999 a process of reducing the number of nets per installation was begun, with a view to reducing catches. -
The Riddle of Spinosaurus Aegyptiacus' Dorsal Sail
Geol. Mag. 153 (3), 2016, pp. 544–547. c Cambridge University Press 2015. This is an Open Access article, distributed 544 under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. doi:10.1017/S0016756815000801 RAPID COMMUNICATION The riddle of Spinosaurus aegyptiacus’ dorsal sail ∗ JAN GIMSA †, ROBERT SLEIGH‡ & ULRIKE GIMSA§ ∗ University of Rostock, Chair for Biophysics, Gertrudenstr. 11A, 18057 Rostock, Germany ‡Sleigh Technical Translations, Wundstrasse 5, 14059 Berlin, Germany §Leibniz Institute for Farm Animal Biology, Institute of Behavioural Physiology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany (Received 24 February 2015; accepted 28 September 2015; first published online 17 November 2015) Abstract A second, that the spines supported a muscle or fat-lined hump (Bailey, 1997) was dismissed in favour of Stromer’s Spinosaurus aegyptiacus was probably the largest predatory (1915) hypothesis of convergent evolution with the skin- dinosaur of the Cretaceous period. A new study shows that it covered neural spines of the crested chameleon. Based on the was a semiaquatic hunter. The function of Spinosaurus’ huge idea that the sail was tightly enveloped in skin, the authors dorsal ‘sail’ remains unsolved, however. Three hypotheses proposed that it was used largely for display on land and in have been proposed: (1) thermoregulation; (2) humpback water to deter foes and competitors or to impress potential storage; or (3) display. According to our alternative hypo- sexual partners, and that it would have remained visible while thesis, the submerged sail would have improved manoeuv- swimming. -
South Africa, Republic Of
National Plan of Action for the Conservation and Management of Sharks (NPOA-Sharks) Foreword South Africa’s Exclusive Economic Zone is endowed with a rich variety of marine living resources. The sustainable management of these resources for the benefit of all South Africans, present and future, remains a firm commitment of the South African Government. South Africa is signatory to the Code of Conduct for Responsible Fisheries - voluntarily agreed to by members of the United Nations Food and Agriculture Organisation (FAO) - and, as such, is committed to the development and implementation of National Plans of Action (NPOAs) as adopted by the twenty- third session of the FAO Committee on Fisheries in February 1999 and endorsed by the FAO Council in June 1999. NPOAs describe strategies through which commercial fishing nations can achieve economically and ecologically sustainable fisheries. South Africa published the NPOA-Seabirds – aimed at reducing incidental catch and promoting the conservation of seabirds in longline fisheries - in August 2008. South Africa has adopted an Ecosystem Approach to Fisheries and now regularly conducts Ecological Risk Assessments for all the commercial fishing sectors, widely consulting with all stakeholders regarding best management practices. Acknowledging the importance of maintaining a healthy marine ecosystem and the possibility of major detrimental effects due to the disappearance of large predators, South Africa was the first country to offer full protection to the great white shark, removing it from the list of harvestable species. In accordance with international recommendations, South Africa subsequently banned the landing of a number of susceptible shark species, including oceanic whitetip, silky, thresher and hammerhead sharks. -
Fishing Padre in September by Charles A. Golla
of the water. Trout, redfish and whiting fol- low the bait activity from below, under the action. As the feeding activity intensifies, the bait ball will move in and out of casting range. The longer bait ball stays together, the greater the chance that jack crevalle and tarpon will move in around the edges. Bull and blacktip sharks will follow the jack crevalle. If the bait ball is moving north or south and in and out of casting range, the feeding frenzy is relatively fresh. As the bait wears down, it starts moving in a cir- cular pattern and indicates the frenzy has gone on for some time. It is at this point that you have the greatest chance of see- Charles Golla with Spanish Mackerel ing tarpon and a large concentration of Photo by Charles Golla game fish. Mullet are good indicators of structure and the presence of game fish. If you Fishing Padre in September by Charles A. Golla see mullet lazily moving through one of the bars, there’s a good chance that no September is one of the best months for This includes locating bait concentrations game fish are present. If you see mullet fishing the Padre Island National Seashore and reading the surf structure. all pushed up along the edge or frantically (PINS) because the Fall baitfish migration Baitfish, Birds, and Slicks jumping as they pass over a particular bar is in full force and hungry game fish are Fishing at this time of the year will be or structure, game fish are close by feed- sure to follow. -
Tiger Sharks
A taste of SOUTH AFRICA Edited by Edwin Marcow Dive photos by Andrew Texts by Edwin Marcow, Woodburn, Edwin Marcow, Andrew Woodburn and Dan Thomas Peschack. Beecham. Additional Wildllife photography reporting by Peter Symes by Edwin Marcow Covering an area of be seen to be believed. over 1,200,000 sq km, Since the end of apart- with nearly 3000km of heid eleven years ago rugged coastline, South more and more people Africa boasts some of have started travelling to the worlds most awe South Africa, not only to inspiring diving. experience the breath From the Great whites taking diving but also of the Western Cape, the spectacular scenery, to the epic Sardine vineyards, safaris, archi- Run, the pristine coral tecture, and local people reefs of Sodwana Bay that together make this and the Ragged Tooth destination a must for any Republic of South Africa Sharks of Aliwol Shoal, seasoned traveller. many of the sights and experiences must Over the following pages we’ll take you through some of the best dives sites, as well as look- ing in more detail at some experiences you can enjoy there. Join us now, as we discover EDWIN MARCOW South Africa 24 X-RAY MAG : 8 : 2005 EDITORIAL FEATURES TRAVEL NEWS EQUIPMENT BOOKS SCIENCE & ECOLOGY EDUCATION PROFILES PORTFOLIO CLASSIFIED travel The Best Dive Sights in South Africa SOUTH AFRICA WRECKS DOLPHINS MOZAMBIQUE AFRICA NORTHERN WHALES CORAL REEF PROVINCE KRUGER NATIONAL SHARKS PARK GAUTENG MAPUTO JOHANNESBURG SOUTH NORTH WEST SWAZILAND AFRICA THOMAS P. PESCHAK SODWANA BAY SA HLULUWE GAME FREE STATE RESERVE The primary three dive locations are Gansbaai, The KWAZULU NATAL Sardine Run, and Sodwana Bay - though there are also many interesting and varied shipwrecks dotting NORTHERN CAPE LESOTHO this rugged and extensive coastline. -
Animating Predator and Prey Fish Interactions
Georgia State University ScholarWorks @ Georgia State University Computer Science Dissertations Department of Computer Science 5-6-2019 Animating Predator and Prey Fish Interactions Sahithi Podila Follow this and additional works at: https://scholarworks.gsu.edu/cs_diss Recommended Citation Podila, Sahithi, "Animating Predator and Prey Fish Interactions." Dissertation, Georgia State University, 2019. https://scholarworks.gsu.edu/cs_diss/149 This Dissertation is brought to you for free and open access by the Department of Computer Science at ScholarWorks @ Georgia State University. It has been accepted for inclusion in Computer Science Dissertations by an authorized administrator of ScholarWorks @ Georgia State University. For more information, please contact [email protected]. ANIMATING PREDATOR AND PREY FISH INTERACTIONS by SAHITHI PODILA Under the Direction of Ying Zhu, PhD ABSTRACT Schooling behavior is one of the most salient social and group activities among fish. They form schools for social reasons like foraging, mating and escaping from predators. Animating a school of fish is difficult because they are large in number, often swim in distinctive patterns that is they take the shape of long thin lines, squares, ovals or amoeboid and exhibit complex coordinated patterns especially when they are attacked by a predator. Previous work in computer graphics has not provided satisfactory models to simulate the many distinctive interactions between a school of prey fish and their predator, how does a predator pick its target? and how does a school of fish react to such attacks? This dissertation presents a method to simulate interactions between prey fish and predator fish in the 3D world based on the biological research findings. -
Dolphin Dream, the Bahamas + [Other Articles] Undercurrent
The Private, Exclusive Guide for Serious Divers September 2016 Vol. 31, No. 9 Dolphin Dream, The Bahamas dolphin snorkeling for the patient and energetic Dear Fellow Diver, IN THIS ISSUE: Dolphin Dream, The Bahamas ........1 The call came at 7 p.m. The Dolphin Dream had been A Diving Computer Postscript .......2 steaming for hours. The sun was low, and two of the guests Invasive Lionfish Encounter had already cracked open beers, having given up on a dol- Top Predator! ....................3 phins interaction that day. The rest of us assembled on The Sardine Run: South Africa ......6 the dive deck, donned our fins, snorkels, and masks, ready Is the Sardine Run an Endangered to make our giant stride. Six Atlantic spotted dolphins Species? .........................7 swam off the stern, waiting for us to join them. A Sparkling South African Side Trip .8 The Man Who Made Your The water was a deep shade of blue, the sandy bottom Diving Safer.....................11 only 30 feet deep. As with most of our evening encounters, Why You Can Dive with 700 the dolphins were more energetic and playful than they had Sharks in Fakarava ..............12 been during the morning. They chased and playfully nipped Find Yourself in Deep Trouble? .....14 at each other and at the fins of the free divers. Whenever Sherwood, You Have a Camband I thought they had left, one would suddenly zoom past me, Problem ........................15 quickly followed by others. I was struck by how close they A Gruesome Start to A Dive Trip ....16 came to me without making contact. -
Sardine Run: Analysis of Socio-Economic Impact and Marketing Strategy in the South Coast Region of Kwazulu Natal
SARDINE RUN: ANALYSIS OF SOCIO-ECONOMIC IMPACT AND MARKETING STRATEGY IN THE SOUTH COAST REGION OF KWAZULU NATAL BY THEMBA MANANA Dissertation submitted in compliance with the requirements for the Masters Degree in Technology in the Department of Marketing, Durban University of Technology I, Themba Manana, declare that this dissertation represents my own work. APPROVED FOR FINAL SUBMISSION SUPERVISOR: …………………………….. DATE……………………………… Dr H.L.Garbharran,B.A,Hons,M.P.A.,D.P.A i ACKNOWLEDGEMENTS Firstly, I would like to thank Almighty God for his divine protection, for giving me the greatest gift of precious life. I extend heartfelt appreciation to my Institution (Durban University of Technology), particularly the Department of Marketing, for their guidance and support throughout my studies. I am grateful to the following people: Dr H.L.Garbharran, my supervisor, for his guidance and patience. His knowledge of Marketing Research has been the source of inspiration; Mr Peter Raap (HOD Department of Marketing) and Dr. R. Mason for constantly supporting me and for willingness to listen to all my grumbles; and Prof. Vic Peddemors, of the school of Biology at the University of Natal, for his guidance and for arranging financial support for the study. I wish to extend a warm thank you to very special individuals who have encouraged, mentored and supported my efforts in my pursuit of higher learning and the Masters Degree. Each one of you has touched my mind and heart in a very special way. It is with a great pride that I call them brothers, sisters, mentors and friends. ii DEDICATION My parents have shown me the strength and power of pride, honour and love. -
High Frequency Side Scan Sonar Fish Reconnaissance by Autonomous Underwater Vehicles
Canadian Journal of Fisheries and Aquatic Sciences High Frequency Side Scan Sonar Fish Reconnaissance by Autonomous Underwater Vehicles Journal: Canadian Journal of Fisheries and Aquatic Sciences Manuscript ID cjfas-2015-0301.R2 Manuscript Type: Article Date Submitted by the Author: 15-Apr-2016 Complete List of Authors: Grothues, Thomas; Rutgers University, Marine and Coastal Sciences Newhall, Arthur; Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Dept. Lynch, James;Draft Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Dept. Vogel, Kaela; University of North Carolina Wilmington, Department of Marine Biology Gawarkiewicz, Glen; Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Dept. SURVEYS < General, ACOUSTIC EQUIPMENT < General, SAMPLING < Keyword: General, REMOTE SENSING < General, PELAGIC FISH < General Note: The following files were submitted by the author for peer review, but cannot be converted to PDF. You must view these files (e.g. movies) online. bluefish_lineup.wmv tiger_shark_follow.wmv blue_runners_clip.wmv little_tunny_Sept11.mp4 GOPR01602_amberjack.mp4 GOPR01602_barracuda.mp4 https://mc06.manuscriptcentral.com/cjfas-pubs Page 1 of 58 Canadian Journal of Fisheries and Aquatic Sciences 1 High Frequency Side Scan Sonar Fish Reconnaissance by Autonomous Underwater Vehicles 2 3 Thomas M. Grothues 4 Rutgers University Marine Field Station, 800 c/o 132 Great Bay Blvd., Tuckerton, NJ 08087 5 6 Arthur E. Newhall 7 Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Dept. 8 266 Woods Hole Rd., MS# 11, Woods Hole, MA 02543-1050 9 10 James F. Lynch 11 Woods Hole Oceanographic Institution, AppliedDraft Ocean Physics and Engineering Dept. 12 266 Woods Hole Rd., MS# 11, Woods Hole, MA 02543-1050 13 14 Kaela S.