Upwelling As a Source of Nutrients for the Great Barrier Reef Ecosystems: a Solution to Darwin's Question?
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7 Day Gbr Itinerary
7 DAY & 7 NIGHT GREAT BARRIER REEF ITINERARY PORT DOUGLAS | GREAT BARRIER REEF | COOKTOWN | LIZARD ISLAND PORT DOUGLAS Port Douglas is a town on the Coral Sea in the tropical far north of Queensland, Australia. Located a scenic 50 minute drive north of Cairns International airport, It's known for its luxury beach resorts and as a base for visits to both the Great Barrier Reef, the world's largest reef system, and Daintree National Park, home to biodiverse rainforest. In town, Macrossan Street is lined with boutique shops and restaurants. Curving south is popular Four Mile Beach. THE RIBBON REEFS - GREAT BARRIER REEF - Characteristically no wider than 450m, the Ribbon Reefs are part of the Great Barrier Reef Marina Park and are covered in colorful corals that attract a plethora of reef life big and small, with sandy gullies separating them, themselves containing interesting critters. The Ribbons reef host several of Australia’s most spectacular dive sites, as well as arguably the most prolific Black Marlin fishing in the world at certain times of year -with general fishing topping the list also. LIZARD ISLAND Lizard Island hosts Australia’s northernmost island resort. It is located 150 miles north of Cairns and 57 miles north east off the coast from Cooktown. Lizard Island is an absolute tropical paradise, a haven of isolation, gratification and relaxation. Accessible by boat and small aircraft, this tropical haven is a bucket list destination. Prominent dives spots on the Ribbon Reefs are generally quite shallow, with bommies coming up to as high as 5 metres below the surface from a sandy bottom that is between 15-20 metres below the surface. -
Coral Reef Education and Australian High School Students
CORAL REEF EDUCATION AND AUSTRALIAN HIGH SCHOOL STUDENTS by Carl M. Stepath, MEd PhD Candidate: School of Education, and School of Tropical Environment Studies & Geography; James Cook University, Cairns, Qld 4878, Australia, [email protected] In proceedings of the Marine Education Society of Australasia 2004 Conference, Noosa, Queensland, October 2-3, 2004. Keywords: tropical marine education, environmental and marine experiential education, environmental awareness and attitudes, ecological agency, coral reef education Abstract: This paper reports on a PhD research project investigating marine education in coral reef environments along the Queensland coast. The study explored relationships between awareness, attitudes and ecological skills of high school students who were trained in coral reef ecology and monitoring in offshore sites along the Great Barrier Reef in 2002 and 2003. The research investigated the question of whether experiential marine education can change the reported environmental knowledge, attitudes and ecological agency of student participants. Some key data outcomes are presented and implications for effective marine education strategies discussed. Introduction Educational programs that focus on humans and their relationship to coral reefs are becoming necessary, as reef structures along the Queensland coast come under mounting ecological pressure (GBRMPA, 2003; Hughes et al., 2003; Talbot, 1995). Marine education has been defined by Roseanne Fortner (1991) as that part of the total educational process that enables people to develop sensitivity to and a general understanding of the role of the seas in human affairs and the impact of society on the marine and aquatic environments. Improving pedagogical techniques concerning aquatic environments is valuable since continuing intensification of human activity near coastline areas adversely affects marine and coastal ecosystems worldwide (NOAA, 1998). -
Basic Concepts in Oceanography
Chapter 1 XA0101461 BASIC CONCEPTS IN OCEANOGRAPHY L.F. SMALL College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon, United States of America Abstract Basic concepts in oceanography include major wind patterns that drive ocean currents, and the effects that the earth's rotation, positions of land masses, and temperature and salinity have on oceanic circulation and hence global distribution of radioactivity. Special attention is given to coastal and near-coastal processes such as upwelling, tidal effects, and small-scale processes, as radionuclide distributions are currently most associated with coastal regions. 1.1. INTRODUCTION Introductory information on ocean currents, on ocean and coastal processes, and on major systems that drive the ocean currents are important to an understanding of the temporal and spatial distributions of radionuclides in the world ocean. 1.2. GLOBAL PROCESSES 1.2.1 Global Wind Patterns and Ocean Currents The wind systems that drive aerosols and atmospheric radioactivity around the globe eventually deposit a lot of those materials in the oceans or in rivers. The winds also are largely responsible for driving the surface circulation of the world ocean, and thus help redistribute materials over the ocean's surface. The major wind systems are the Trade Winds in equatorial latitudes, and the Westerly Wind Systems that drive circulation in the north and south temperate and sub-polar regions (Fig. 1). It is no surprise that major circulations of surface currents have basically the same patterns as the winds that drive them (Fig. 2). Note that the Trade Wind System drives an Equatorial Current-Countercurrent system, for example. -
Lagoons and Coastal Wetlands in the Global Change Context: Impacts and Management Issues
LAGOONS AND COASTAL WETLANDS IN THE GLOBAL CHANGE CONTEXT: IMPACTS AND MANAGEMENT ISSUES International Conference 1. Title of the Project International Conference: “Lagoons and coastal wetlands in the global change context: Impacts and management issues” Venice, July 2003 Starting date: January 2003 2. Objectives of the Project The objective of the present project is to organise and hold an international conference to respond to the challenge of integrating global change issues in wetland management. The conference will have a multidisciplinary view and will be based on high level scientific expertise. The aim is to identify gaps, problems and success in wetland knowledge and management. CORILA is an association between the University of Padua, the University of Venice, the University Institute of Architecture in Venice and the National Research Council, for coordinating and managing the research on the Venice Lagoon system. CORILA is presently managing a large multidisciplinary scientific project on the lagoon of Venice which embraces biology, chemistry, morphology, modelling, architecture and economics and is networking 70 research bodies and institutions. CORILA is in constant dialogue with the Public Administrations and promotes the dissemination of the results of the research to the policy makers. CORILA stipulated an agreement with the UNESCO, Regional Office for Science and Technology, Venice, Italy for the promotion and coordination of scientific research on Venice lagoon system and coastal wetlands. UNESCO, Regional Office for Science and Technology, Venice, Italy has large competencies in wetlands and lagoons conservation, and particularly in the safeguarding of the Venice Lagoon. It is member of MARS (European marine research stations network) and promoter of MAB (Man and the biosphere world network) which promotes and demonstrates a balanced relationship between people and nature. -
Fronts in the World Ocean's Large Marine Ecosystems. ICES CM 2007
- 1 - This paper can be freely cited without prior reference to the authors International Council ICES CM 2007/D:21 for the Exploration Theme Session D: Comparative Marine Ecosystem of the Sea (ICES) Structure and Function: Descriptors and Characteristics Fronts in the World Ocean’s Large Marine Ecosystems Igor M. Belkin and Peter C. Cornillon Abstract. Oceanic fronts shape marine ecosystems; therefore front mapping and characterization is one of the most important aspects of physical oceanography. Here we report on the first effort to map and describe all major fronts in the World Ocean’s Large Marine Ecosystems (LMEs). Apart from a geographical review, these fronts are classified according to their origin and physical mechanisms that maintain them. This first-ever zero-order pattern of the LME fronts is based on a unique global frontal data base assembled at the University of Rhode Island. Thermal fronts were automatically derived from 12 years (1985-1996) of twice-daily satellite 9-km resolution global AVHRR SST fields with the Cayula-Cornillon front detection algorithm. These frontal maps serve as guidance in using hydrographic data to explore subsurface thermohaline fronts, whose surface thermal signatures have been mapped from space. Our most recent study of chlorophyll fronts in the Northwest Atlantic from high-resolution 1-km data (Belkin and O’Reilly, 2007) revealed a close spatial association between chlorophyll fronts and SST fronts, suggesting causative links between these two types of fronts. Keywords: Fronts; Large Marine Ecosystems; World Ocean; sea surface temperature. Igor M. Belkin: Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Road, Narragansett, Rhode Island 02882, USA [tel.: +1 401 874 6533, fax: +1 874 6728, email: [email protected]]. -
A Numerical Study of the Long- and Short-Term Temperature Variability and Thermal Circulation in the North Sea
JANUARY 2003 LUYTEN ET AL. 37 A Numerical Study of the Long- and Short-Term Temperature Variability and Thermal Circulation in the North Sea PATRICK J. LUYTEN Management Unit of the Mathematical Models, Brussels, Belgium JOHN E. JONES AND ROGER PROCTOR Proudman Oceanographic Laboratory, Bidston, United Kingdom (Manuscript received 3 January 2001, in ®nal form 4 April 2002) ABSTRACT A three-dimensional numerical study is presented of the seasonal, semimonthly, and tidal-inertial cycles of temperature and density-driven circulation within the North Sea. The simulations are conducted using realistic forcing data and are compared with the 1989 data of the North Sea Project. Sensitivity experiments are performed to test the physical and numerical impact of the heat ¯ux parameterizations, turbulence scheme, and advective transport. Parameterizations of the surface ¯uxes with the Monin±Obukhov similarity theory provide a relaxation mechanism and can partially explain the previously obtained overestimate of the depth mean temperatures in summer. Temperature strati®cation and thermocline depth are reasonably predicted using a variant of the Mellor±Yamada turbulence closure with limiting conditions for turbulence variables. The results question the common view to adopt a tuned background scheme for internal wave mixing. Two mechanisms are discussed that describe the feedback of the turbulence scheme on the surface forcing and the baroclinic circulation, generated at the tidal mixing fronts. First, an increased vertical mixing increases the depth mean temperature in summer through the surface heat ¯ux, with a restoring mechanism acting during autumn. Second, the magnitude and horizontal shear of the density ¯ow are reduced in response to a higher mixing rate. -
The History of Carbon Monoxide Intoxication
medicina Review The History of Carbon Monoxide Intoxication Ioannis-Fivos Megas 1 , Justus P. Beier 2 and Gerrit Grieb 1,2,* 1 Department of Plastic Surgery and Hand Surgery, Gemeinschaftskrankenhaus Havelhoehe, Kladower Damm 221, 14089 Berlin, Germany; fi[email protected] 2 Burn Center, Department of Plastic Surgery and Hand Surgery, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany; [email protected] * Correspondence: [email protected] Abstract: Intoxication with carbon monoxide in organisms needing oxygen has probably existed on Earth as long as fire and its smoke. What was observed in antiquity and the Middle Ages, and usually ended fatally, was first successfully treated in the last century. Since then, diagnostics and treatments have undergone exciting developments, in particular specific treatments such as hyperbaric oxygen therapy. In this review, different historic aspects of the etiology, diagnosis and treatment of carbon monoxide intoxication are described and discussed. Keywords: carbon monoxide; CO intoxication; COHb; inhalation injury 1. Introduction and Overview Intoxication with carbon monoxide in organisms needing oxygen for survival has probably existed on Earth as long as fire and its smoke. Whenever the respiratory tract of living beings comes into contact with the smoke from a flame, CO intoxication and/or in- Citation: Megas, I.-F.; Beier, J.P.; halation injury may take place. Although the therapeutic potential of carbon monoxide has Grieb, G. The History of Carbon also been increasingly studied in recent history [1], the toxic effects historically dominate a Monoxide Intoxication. Medicina 2021, 57, 400. https://doi.org/10.3390/ much longer period of time. medicina57050400 As a colorless, odorless and tasteless gas, CO is produced by the incomplete combus- tion of hydrocarbons and poses an invisible danger. -
Mapping Current and Future Priorities
Mapping Current and Future Priorities for Coral Restoration and Adaptation Programs International Coral Reef Initiative (ICRI) Ad Hoc Committee on Reef Restoration 2019 Interim Report This report was prepared by James Cook University, funded by the Australian Institute for Marine Science on behalf of the ICRI Secretariat nations Australia, Indonesia and Monaco. Suggested Citation: McLeod IM, Newlands M, Hein M, Boström-Einarsson L, Banaszak A, Grimsditch G, Mohammed A, Mead D, Pioch S, Thornton H, Shaver E, Souter D, Staub F. (2019). Mapping Current and Future Priorities for Coral Restoration and Adaptation Programs: International Coral Reef Initiative Ad Hoc Committee on Reef Restoration 2019 Interim Report. 44 pages. Available at icriforum.org Acknowledgements The ICRI ad hoc committee on reef restoration are thanked and acknowledged for their support and collaboration throughout the process as are The International Coral Reef Initiative (ICRI) Secretariat, Australian Institute of Marine Science (AIMS) and TropWATER, James Cook University. The committee held monthly meetings in the second half of 2019 to review the draft methodology for the analysis and subsequently to review the drafts of the report summarising the results. Professor Karen Hussey and several members of the ad hoc committee provided expert peer review. Research support was provided by Melusine Martin and Alysha Wincen. Advisory Committee (ICRI Ad hoc committee on reef restoration) Ahmed Mohamed (UN Environment), Anastazia Banaszak (International Coral Reef Society), -
World Ocean Thermocline Weakening and Isothermal Layer Warming
applied sciences Article World Ocean Thermocline Weakening and Isothermal Layer Warming Peter C. Chu * and Chenwu Fan Naval Ocean Analysis and Prediction Laboratory, Department of Oceanography, Naval Postgraduate School, Monterey, CA 93943, USA; [email protected] * Correspondence: [email protected]; Tel.: +1-831-656-3688 Received: 30 September 2020; Accepted: 13 November 2020; Published: 19 November 2020 Abstract: This paper identifies world thermocline weakening and provides an improved estimate of upper ocean warming through replacement of the upper layer with the fixed depth range by the isothermal layer, because the upper ocean isothermal layer (as a whole) exchanges heat with the atmosphere and the deep layer. Thermocline gradient, heat flux across the air–ocean interface, and horizontal heat advection determine the heat stored in the isothermal layer. Among the three processes, the effect of the thermocline gradient clearly shows up when we use the isothermal layer heat content, but it is otherwise when we use the heat content with the fixed depth ranges such as 0–300 m, 0–400 m, 0–700 m, 0–750 m, and 0–2000 m. A strong thermocline gradient exhibits the downward heat transfer from the isothermal layer (non-polar regions), makes the isothermal layer thin, and causes less heat to be stored in it. On the other hand, a weak thermocline gradient makes the isothermal layer thick, and causes more heat to be stored in it. In addition, the uncertainty in estimating upper ocean heat content and warming trends using uncertain fixed depth ranges (0–300 m, 0–400 m, 0–700 m, 0–750 m, or 0–2000 m) will be eliminated by using the isothermal layer. -
Climate Change Impacts on Net Primary Production (NPP) And
Biogeosciences, 13, 5151–5170, 2016 www.biogeosciences.net/13/5151/2016/ doi:10.5194/bg-13-5151-2016 © Author(s) 2016. CC Attribution 3.0 License. Climate change impacts on net primary production (NPP) and export production (EP) regulated by increasing stratification and phytoplankton community structure in the CMIP5 models Weiwei Fu, James T. Randerson, and J. Keith Moore Department of Earth System Science, University of California, Irvine, California, 92697, USA Correspondence to: Weiwei Fu ([email protected]) Received: 16 June 2015 – Published in Biogeosciences Discuss.: 12 August 2015 Revised: 10 July 2016 – Accepted: 3 August 2016 – Published: 16 September 2016 Abstract. We examine climate change impacts on net pri- the models. Community structure is represented simply in mary production (NPP) and export production (sinking par- the CMIP5 models, and should be expanded to better cap- ticulate flux; EP) with simulations from nine Earth sys- ture the spatial patterns and climate-driven changes in export tem models (ESMs) performed in the framework of the efficiency. fifth phase of the Coupled Model Intercomparison Project (CMIP5). Global NPP and EP are reduced by the end of the century for the intense warming scenario of Representa- tive Concentration Pathway (RCP) 8.5. Relative to the 1990s, 1 Introduction NPP in the 2090s is reduced by 2–16 % and EP by 7–18 %. The models with the largest increases in stratification (and Ocean net primary production (NPP) and particulate or- largest relative declines in NPP and EP) also show the largest ganic carbon export (EP) are key elements of marine bio- positive biases in stratification for the contemporary period, geochemistry that are vulnerable to ongoing climate change suggesting overestimation of climate change impacts on NPP from rising concentrations of atmospheric CO2 and other and EP. -
Variability in Ocean Currents Around Australia
State and Trends of Australia’s Oceans Report 1.4 Variability in ocean currents around Australia Charitha B. Pattiaratchi1,2 and Prescilla Siji1,2 1 Oceans Graduate School, The University of Western Australia, Perth, WA, Australia 2 UWA Oceans Institute, The University of Western Australia, Perth, WA, Australia Summary Ocean currents also have a strong influence on marine ecosystems, through the transport of heat, nutrients, phytoplankton, zooplankton and larvae of most marine animals. We used geostrophic currents derived satellite altimetry measurements between 1993 and 2019 to examine the Kinetic Energy (KE, measure of current intensity) and Eddy Kinetic Energy (EKE, variability of the currents relative to a mean) around Australia. The East Australian (EAC) and Leeuwin (LC) current systems along the east and west coasts demonstrated strong seasonal and inter-annual variability linked to El Niño and La Niña events. The variability in the LC system was larger than for the EAC. All major boundary currents around Australia were enhanced during the 2011 La Niña event. Key Data Streams State and Trends of Australia’s Ocean Report www.imosoceanreport.org.au Satellite Remote Time-Series published Sensing 10 January 2020 doi: 10.26198/5e16a2ae49e76 1.4 I Cuirrent variability during winter (Wijeratne et al., 2018), with decadal ENSO Rationale variations affecting the EAC transport variability (Holbrook, Ocean currents play a key role in determining the distribution Goodwin, McGregor, Molina, & Power, 2011). Variability of heat across the planet, not only regulating and stabilising associated with ENSO along east coast of Australia appears climate, but also contributing to climate variability. Ocean to be weaker than along the west coast. -
Arenicola Marina During Low Tide
MARINE ECOLOGY PROGRESS SERIES Published June 15 Mar Ecol Prog Ser Sulfide stress and tolerance in the lugworm Arenicola marina during low tide Susanne Volkel, Kerstin Hauschild, Manfred K. Grieshaber Institut fiir Zoologie, Lehrstuhl fur Tierphysiologie, Heinrich-Heine-Universitat, Universitatsstr. 1, D-40225 Dusseldorf, Germany ABSTRACT: In the present study environmental sulfide concentrations in the vicinity of and within burrows of the lugworm Arenicola marina during tidal exposure are presented. Sulfide concentrations in the pore water of the sediment ranged from 0.4 to 252 pM. During 4 h of tidal exposure no significant changes of pore water sulfide concentrations were observed. Up to 32 pM sulfide were measured in the water of lugworm burrows. During 4 h of low tide the percentage of burrows containing sulfide increased from 20 to 50% in July and from 36 to 77% in October A significant increase of median sulfide concentrations from 0 to 14.5 pM was observed after 5 h of emersion. Sulfide and thiosulfate concentrations in the coelomic fluid and succinate, alanopine and strombine levels in the body wall musculature of freshly caught A. marina were measured. During 4 h of tidal exposure in July the percentage of lugworms containing sulfide and maximal sulfide concentrations increased from 17 % and 5.4 pM to 62% and 150 pM, respectively. A significant increase of median sulfide concentrations was observed after 2 and 3 h of emersion. In October, changes of sulfide concentrations were less pronounced. Median thiosulfate concentrations were 18 to 32 FM in July and 7 to 12 ~.IMin October No significant changes were observed during tidal exposure.