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A Modified Sverdrup Model of the Atlantic and Caribbean Circulation
MARCH 2002 WAJSOWICZ 973 A Modi®ed Sverdrup Model of the Atlantic and Caribbean Circulation ROXANA C. WAJSOWICZ* Department of Meteorology, University of Maryland at College Park, College Park, Maryland (Manuscript received 9 October 2000, in ®nal form 6 August 2001) ABSTRACT An analytical model of the mean wind-driven circulation of the North Atlantic and Caribbean Sea is constructed based on linear dynamics and assumed existence of a level of no motion above all topography. The circulation around each island is calculated using the island rule, which is extended to describe an arbitrary length chain of overlapping islands. Frictional effects in the intervening straits are included by assuming a linear dependence on strait transport. Asymptotic expansions in the limit of strong and weak friction show that the transport streamfunction on an island boundary is dependent on wind stress over latitudes spanning the whole length of the island chain and spanning just immediately adjacent islands, respectively. The powerfulness of the method in enabling the wind stress bands, which determine a particular strait transport, to be readily identi®ed, is demonstrated by a brief explanation of transport similarities and differences in earlier numerical models forced by various climatological wind stress products. In the absence of frictional effects outside western boundary layers, some weaker strait transports are in the wrong direction (e.g., Santaren Channel) and others are too large (e.g., Old Bahama Channel). Also, there is no western boundary current to the east of Abaco Island. Including frictional effects in the straits enables many of these discrepancies to be resolved. -
BEHAVIOURAL RESPONSE of NORTHERN BASKET STAR GORGONOCEPHALUS ARCTICUS to MECHANICAL STIMULATIONS J.-F Hamel, a Mercier
BEHAVIOURAL RESPONSE OF NORTHERN BASKET STAR GORGONOCEPHALUS ARCTICUS TO MECHANICAL STIMULATIONS J.-F Hamel, A Mercier To cite this version: J.-F Hamel, A Mercier. BEHAVIOURAL RESPONSE OF NORTHERN BASKET STAR GOR- GONOCEPHALUS ARCTICUS TO MECHANICAL STIMULATIONS. Vie et Milieu / Life & En- vironment, Observatoire Océanologique - Laboratoire Arago, 1993, pp.197-203. hal-03045834 HAL Id: hal-03045834 https://hal.sorbonne-universite.fr/hal-03045834 Submitted on 8 Dec 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. VIE MILIEU, 1993, 43 (4): 197-203 BEHAVIOURAL RESPONSE OF NORTHERN BASKET STAR GORGONOCEPHALUS ARCTICUS TO MECHANICAL STIMULATIONS J.-F. HAMEL and A. MERCIER Département d'océanographie, Université du Québec à Rimouski, Centre Océanographique de Rimouski, 310 allée des Ursulines, Rimouski (Québec), Canada G5L 3A1 GORGONOCEPHALUS RÉSUME - L'Ophiure ramifiée Gorgonocephalus arcticus, retrouvée dans les eaux OPHIURE profondes de l'estuaire du Saint-Laurent, montre une capacité de discrimination COMPORTEMENT tactile qui lui permet de répondre proportionnellement à diverses intensités de sti- MECANO-SENSIBILITE mulation. Une stimulation ponctuelle du disque provoque l'enroulement général des bras et la couverture du disque par les radii. Une comparaison de la vitesse du mouvement des bras, induite par différents niveaux de stimulation, montre que G. -
A Literature Review of the Ophiuroidea (Echinodermata) from the Pacific Coast of Mexico
A literature review of the Ophiuroidea (Echinodermata) from the Pacific coast of Mexico Rebeca Granja-Fernández1, María Dinorah Herrero-Pérezrul2, Andrés López-Pérez3, Alejandro Hernández-Morales4 & Pedro Diego Rangel-Solís3 1. Doctorado en Ciencias Biológicas y de la Salud. Universidad Autónoma Metropolitana. San Rafael Atlixco 186, Col. Vicentina. CP 09340. D.F., México; [email protected] 2. Centro Interdisciplinario de Ciencias Marinas-Instituto Politécnico Nacional. Depto. de Pesquerías y Biología Marina. Avenida Instituto Politécnico Nacional s/n. Col. Playa Palo de Santa Rita. C.P. 23096. La Paz, Baja California Sur, México; [email protected] 3. Departamento de Hidrobiología, División CBS, UAM-Iztapalapa. Av. San Rafael Atlixco 186, Col. Vicentina, CP 09340, AP 55-535. D.F., México; [email protected], [email protected] 4. Programa de Licenciatura en Ecología Marina, Laboratorio de Ecología Cuantitativa, Universidad Autónoma de Guerrero. Av. Gran Vía Tropical 20, Fraccionamiento Las Playas, CP 39390. Acapulco, Guerrero, México; [email protected] Received 30-V-2014. Corrected 03-X-2014. Accepted 17-XI-2014. Abstract: Despite the important effort of knowing the Ophiuroidea diversity in the Mexican Pacific, some mis- takes in the taxonomic nomenclature have pervaded through time. In order to clarify the latter, a checklist based on literature review of brittle stars from the Mexican Pacific is provided. We reviewed a total of 105 references that in total summarized 125 species of brittle stars from the Mexican Pacific (112) and the Gulf of California (97), belonging to two orders, 16 families and 50 genera. These records are higher than those reported on previ- ous studies carried out in the area. -
Hemichordate Phylogeny: a Molecular, and Genomic Approach By
Hemichordate Phylogeny: A molecular, and genomic approach by Johanna Taylor Cannon A dissertation submitted to the Graduate Faculty of Auburn University in partial fulfillment of the requirements for the Degree of Doctor of Philosophy Auburn, Alabama May 4, 2014 Keywords: phylogeny, evolution, Hemichordata, bioinformatics, invertebrates Copyright 2014 by Johanna Taylor Cannon Approved by Kenneth M. Halanych, Chair, Professor of Biological Sciences Jason Bond, Associate Professor of Biological Sciences Leslie Goertzen, Associate Professor of Biological Sciences Scott Santos, Associate Professor of Biological Sciences Abstract The phylogenetic relationships within Hemichordata are significant for understanding the evolution of the deuterostomes. Hemichordates possess several important morphological structures in common with chordates, and they have been fixtures in hypotheses on chordate origins for over 100 years. However, current evidence points to a sister relationship between echinoderms and hemichordates, indicating that these chordate-like features were likely present in the last common ancestor of these groups. Therefore, Hemichordata should be highly informative for studying deuterostome character evolution. Despite their importance for understanding the evolution of chordate-like morphological and developmental features, relationships within hemichordates have been poorly studied. At present, Hemichordata is divided into two classes, the solitary, free-living enteropneust worms, and the colonial, tube- dwelling Pterobranchia. The objective of this dissertation is to elucidate the evolutionary relationships of Hemichordata using multiple datasets. Chapter 1 provides an introduction to Hemichordata and outlines the objectives for the dissertation research. Chapter 2 presents a molecular phylogeny of hemichordates based on nuclear ribosomal 18S rDNA and two mitochondrial genes. In this chapter, we suggest that deep-sea family Saxipendiidae is nested within Harrimaniidae, and Torquaratoridae is affiliated with Ptychoderidae. -
Environmental Assessment Guantanamo Bay to Dania Beach Submarine Fiber Optic Cable System
Environmental Assessment Guantanamo Bay to Dania Beach Submarine Fiber Optic Cable System January 28, 2015 Prepared For Defense Information Systems Agency Guantanamo Bay to Dania Beach Submarine Fiber Optic Cable System Environmental Assessment January 28, 2015 Prepared for P.O Box 549, Fort Meade, MD 20755-0549 Prepared by SCHEDA Ecological Associates, Inc. 1221 Airport Road, Suite 208, Destin, FL 32541 Tel 850 460 7500 www.scheda.com Environmental Assessment Guantanamo Bay to Dania Beach Submarine Fiber Optic Cable System Table of Contents Executive Summary .................................................................................................................................................... vi Chapter 1 Introduction ..................................................................................................................................... 1 1.1 Overview ................................................................................................................ 1 1.2 Background ............................................................................................................ 3 1.3 Purpose and Need for the Proposed Action ........................................................... 6 Chapter 2 Proposed Action and Alternatives ................................................................................................. 7 2.1 Overview ................................................................................................................ 7 2.2 Project Design ....................................................................................................... -
Ophiuroidea: Euryalida: Gorgonocephalidae) from Korea
ISSN 1226-9999 (print) ISSN 2287-7851 (online) Korean J. Environ. Biol. 33(2) : 205~208 (2015) http://dx.doi.org/10.11626/KJEB.2015.33.2.205 A Newly Recorded Basket Star of Genus Gorgonocephalus (Ophiuroidea: Euryalida: Gorgonocephalidae) from Korea Donghwan Kim and Sook Shin* Department of Life Science, Sahmyook University, Seoul 139-742, Korea Abstract - Some euryalid specimens were collected with fishing nets from Mipo, Gyungsangnam- do and Aewol, Jejudo Island, Korea. They were identified as Gorgonocephalus eucnemis (Müller & Troschel, 1842), belonging to family Gorgonocephalidae of order Euryalida, which was new to the Korean fauna. Their molecular analyses were done with newly intended COI primers of mitochondrial cytochrome oxidase I (COI) gene for the accurate molecular identification. The Korean G. eucnemis was coincident with this NCBI species as a result of Blast analysis, which showed the 99% similarity. In the current study, three Gorgonocephalus species have been report- ed from Korea. Key words: Gorgonocephalus eucnemis, basket star, morphology, molecular analysis, Korea INTRODUCTION MATERIALS AND METHODS Family Gorgonocephalidae including 34 genera is the Basket stars were collected at a depth of 100~150 m deep largest one of three families belonging to order Euryalida by fishing nets from Mipo, Korea Strait and Aewol, Jejudo (Okanishi and Fujita 2013) and its four genera, Astroboa, Island, Korea on June 1983 and January 2013, respectively. Astrocladus, Astrodendrum and Gorgonocephalus, have been The specimens were preserved in 95% ethyl alcohol and reported in Korean fauna (Shin 2013). Almost all Gorgono- identified on the basis of morphological characteristics and cephalus species distribute exclusively in deep water and are molecular analyses. -
Final Report Form
Appendix K – OSRI Grant Policy Manual Final Report Form - Oil Spill Recovery Institute An electronic copy of this report shall be submitted by mail, or e-mail to the OSRI Research Program Manager [email protected] and Financial Office [email protected] Mailing address: P.O. Box 705 - Cordova, AK 99574 - Deadline for this report: Submittal within 90 days of grant/award expiration. Also, note that a summary Financial Statement shall be submitted within 45 days of the grant expiration. The final invoice and financial statement is due within 90 days of the grant/award expiration. Today’s date: 15 April 2014 Name of awardee/grantee: Bodil Bluhm OSRI Contract Number: 11-10-14 Project title: Data rescue: Epibenthic invertebrates from the Beaufort Sea sampled during WEBSEC and OCS cruises in the 1970s Dates project began and ended: PART I - Outline for Final Program or Technical Report This report must be submitted by all grantees. However, for those whose project work resulted in a peer reviewed publication (whether in draft or final form), this report may be abbreviated and the publication attached as part of the report. A. Non-technical Abstract or summary of project work that does not exceed 2 pages and includes an overview of the project. This abstract should describe the nature and significance of the project. It may be provided to the Advisory Board and could be used by OSRI staff to answer inquiries as to the nature and significance of the project. This project sought to rescue data on epibenthic invertebrates and fish sampled by trawls and photographs in the Alaskan Beaufort Sea during Western Beaufort Sea Ecological Cruise (WEBSEC) and Outer Continental Shelf (OCS) surveys in the 1970s. -
Behavior and Functional Morphology of Respiration in The
BEHAVIOR AND FUNCTIONAL MORPHOLOGY OF RESPIRATION IN THE BASKET STAR, GORGONOCEPHALUS EUCNEMIS AND TWO BRITTLE STARS IN THE GENUS OPHIOTHRIX. by MACKENNA A. H. HAINEY A THESIS Presented to the Department of Biology and the Graduate School of the University of Oregon in partial fulfillment of the requirements for the degree of Master of Science September 2018 THESIS APPROVAL PAGE Student: MacKenna A. H. Hainey Title: Behavior and Functional Morphology of Respiration in the Basket Star, Gorgonocephalus eucnemis and Two Brittle Stars in the Genus Ophiothrix This thesis has been accepted and approved in partial fulfillment of the requirements for the Master of Science degree in the Department of Biology by: Richard B. Emlet Advisor Alan L. Shanks Member Maya Watts Member and Janet Woodruff-Borden Vice Provost and Dean of the Graduate School Original approval signatures are on file with the University of Oregon Graduate School. Degree awarded September 2018 ii © 2018 MacKenna A. H. Hainey This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike (United States) License. iii THESIS ABSTRACT MacKenna A. H. Hainey Master of Science Department of Biology September 2018 Title: Behavior and Functional Morphology of Respiration in the Basket Star, Gorgonocephalus eucnemis and Two Brittle Stars in the Genus Ophiothrix Gorgonocephalus eucnemis, Ophiothrix suensonii and Ophiothrix spiculata are aerobic Echinoderms. Previous observations on the anatomy of these two genera state five pairs of radial shields and genital plates are responsible for regulating the position of the roof of the body disc and the flushing of water in and out of the bursae. -
Kachemak Bay Research Reserve: a Unit of the National Estuarine Research Reserve System
Kachemak Bay Ecological Characterization A Site Profile of the Kachemak Bay Research Reserve: A Unit of the National Estuarine Research Reserve System Compiled by Carmen Field and Coowe Walker Kachemak Bay Research Reserve Homer, Alaska Published by the Kachemak Bay Research Reserve Homer, Alaska 2003 Kachemak Bay Research Reserve Site Profile Contents Section Page Number About this document………………………………………………………………………………………………………… .4 Acknowledgements…………………………………………………………………………………………………………… 4 Introduction to the Reserve ……………………………………………………………………………………………..5 Physical Environment Climate…………………………………………………………………………………………………… 7 Ocean and Coasts…………………………………………………………………………………..11 Geomorphology and Soils……………………………………………………………………...17 Hydrology and Water Quality………………………………………………………………. 23 Marine Environment Introduction to Marine Environment……………………………………………………. 27 Intertidal Overview………………………………………………………………………………. 30 Tidal Salt Marshes………………………………………………………………………………….32 Mudflats and Beaches………………………………………………………………………… ….37 Sand, Gravel and Cobble Beaches………………………………………………………. .40 Rocky Intertidal……………………………………………………………………………………. 43 Eelgrass Beds………………………………………………………………………………………… 46 Subtidal Overview………………………………………………………………………………… 49 Midwater Communities…………………………………………………………………………. 51 Shell debris communities…………………………………………………………………….. 53 Subtidal soft bottom communities………………………………………………………. 54 Kelp Forests…………………………………………………….…………………………………….59 Terrestrial Environment…………………………………………………………………………………………………. 61 Human Dimension Overview………………………………………………………………………………………………. -
Sea-Level Changes and Fluid Flow on the Great Bahama Bank Slope1
Eberli, G.P., Swart, P.K., Malone, M.J., et al., 1997 Proceedings of the Ocean Drilling Program, Initial Reports, Vol. 166 2. LEG SYNTHESIS: SEA-LEVEL CHANGES AND FLUID FLOW ON THE GREAT BAHAMA BANK SLOPE1 Shipboard Scientific Party2 INTRODUCTION and the abundance of biostratigraphic markers (Table 1), it was pos- sible to define the ages of the Neogene sequence boundaries and to During Ocean Drilling Program Leg 166 we drilled 17 holes at test their age consistency in the transect sites and to the boreholes pre- seven sites (Sites 1003–1009) on the western flank of the Great Ba- viously drilled on the platform (Figs. 3, 4, and back-pocket foldout). hama Bank (GBB), recovering almost 3 km of core and 3.1 km of By reaching the Oligocene at Site 1007, a sedimentary record of the wireline logs ranging in age from late Oligocene to Holocene (Figs. sea-level changes is available for the entire Neogene. At all five 1, 2). Five sites in the Straits of Florida (Sites 1003–1007) complete transect sites (Sites 1003, 1004, 1005, 1006, and 1007), sedimenta- a transect through prograding carbonate sequences, the Bahamas tion rates (Fig. 5) alternate between high (up to 15 to 20 cm/k.y.) and Transect. Two boreholes (Clino and Unda) drilled previously on the low (<2 cm/k.y.) values, reflecting a long-term pattern of (1) bank western Great Bahama Bank as part of the Bahamas Drilling Project flooding (0.5–2 m.y.) with increased off-bank shedding of platform- represent the shallow-water sites of the transect (Figs. -
Pacific Currents | Spring 2009 Pre-Registration and Pre-Payment Required on All Programs Unless Noted
Spring 2009 | volume 12 | number 3 member magazine of the aquarium of the pacific It’s Feeding Time! FIND OUT WHAT AND HOW THE AQUARIUM FEEDS ITS MARINE MAMMALS, BIRDS, INVERTEBRATES, AND FISHES. Focus on Sustainability REDUCING OCEAN LITTER California may implement a fee for plastic bags and eliminate polystyrene food packaging in a plan to help prevent litter from entering the Pacific Ocean. A EITSM R ANDREW Grass trimmings and litter travel through the storm drains of many coastal cities and empty into the Pacific Ocean. cean litter has been shown to affect more than 265 solution to keeping our beaches litter free and to prevent incidental species worldwide, including sea turtles, seabirds, damage from cleanup efforts. O whales, and other marine mammals. Entanglement, Also to be considered in new legislation as a result of the OPC plan ingesting, and drowning are just some of the ways that is the mandate that disposable take-out food packages be made from plastics in the ocean harm and kill marine life. In addition, floating something other than expanded polystyrene foam (EPS), commonly plastic marine debris transports invasive species. For all these referred to as Styrofoam©. And for many products, manufacturers reasons, in November 2008 the California Ocean Protection Council would need to redesign their packaging to reduce litter. For example, (OPC) came up with a comprehensive marine debris action plan that bottle caps, lids, and straws could be tethered to the bottle. included recommendations for preventing plastic bags, cigarette The OPC, which does not make laws or pass regulations, is tasked butts, and other litter from entering the Pacific Ocean. -
Scs18-23 WG-ESA Report 2018
Northwest Atlantic Fisheries Organization Serial No N6900 NAFO SCS Doc. 18/23 SC WORKING GROUP ON ECOSYSTEM SCIENCE AND ASSESSMENT – NOVEMBER 2018 Report of the 11th Meeting of the NAFO Scientific Council Working Group on Ecosystem Science and Assessment (WG-ESA) NAFO Headquarters, Dartmouth, Canada 13 - 22 November 2018 Contents Introduction ........................................................................................................................................................................................................3 Theme 1: spatial considerations................................................................................................................................................................4 1.1. Update on VME indicator species data and distribution .............................................................................4 1.2 Progress on implementation of workplan for reassessment of VME fishery closures. .................9 1.3. Discussion on updating Kernel Density Analysis and SDM’s .....................................................................9 1.4. Update on the Research Activities related to EU-funded Horizon 2020 ATLAS Project ...............9 1.5. Non-sponge and non-coral VMEs (e.g. bryozoan and sea squirts). ..................................................... 14 1.6 Ecological diversity mapping and interactions with fishing on the Flemish Cap .......................... 14 1.7 Sponge removal by bottom trawling in the Flemish Cap area: implications for ecosystem functioning ...................................................................................................................................................................