Uva-DARE (Digital Academic Repository)
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Trophic Ecology of Gelatinous Zooplankton in Oceanic Food Webs of the Eastern Tropical Atlantic Assessed by Stable Isotope Analysis
Limnol. Oceanogr. 9999, 2020, 1–17 © 2020 The Authors. Limnology and Oceanography published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography. doi: 10.1002/lno.11605 Tackling the jelly web: Trophic ecology of gelatinous zooplankton in oceanic food webs of the eastern tropical Atlantic assessed by stable isotope analysis Xupeng Chi ,1,2* Jan Dierking,2 Henk-Jan Hoving,2 Florian Lüskow,3,4 Anneke Denda,5 Bernd Christiansen,5 Ulrich Sommer,2 Thomas Hansen,2 Jamileh Javidpour2,6 1CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China 2Marine Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany 3Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada 4Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada 5Institute of Marine Ecosystem and Fishery Science (IMF), Universität Hamburg, Hamburg, Germany 6Department of Biology, University of Southern Denmark, Odense M, Denmark Abstract Gelatinous zooplankton can be present in high biomass and taxonomic diversity in planktonic oceanic food webs, yet the trophic structuring and importance of this “jelly web” remain incompletely understood. To address this knowledge gap, we provide a holistic trophic characterization of a jelly web in the eastern tropical Atlantic, based on δ13C and δ15N stable isotope analysis of a unique gelatinous zooplankton sample set. The jelly web covered most of the isotopic niche space of the entire planktonic oceanic food web, spanning > 3 tro- phic levels, ranging from herbivores (e.g., pyrosomes) to higher predators (e.g., ctenophores), highlighting the diverse functional roles and broad possible food web relevance of gelatinous zooplankton. -
High Abundance of Salps in the Coastal Gulf of Alaska During 2011
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/301733881 High abundance of salps in the coastal Gulf of Alaska during 2011: A first record of bloom occurrence for the northern Gulf Article in Deep Sea Research Part II Topical Studies in Oceanography · April 2016 DOI: 10.1016/j.dsr2.2016.04.009 CITATION READS 1 33 4 authors, including: Ayla J. Doubleday Moira Galbraith University of Alaska System Institute of Ocean Sciences, Sidney, BC, Cana… 3 PUBLICATIONS 16 CITATIONS 28 PUBLICATIONS 670 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: l. salmonis and c. clemensi attachment sites: chum salmon View project All content following this page was uploaded by Moira Galbraith on 10 June 2016. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately. Deep-Sea Research II ∎ (∎∎∎∎) ∎∎∎–∎∎∎ Contents lists available at ScienceDirect Deep-Sea Research II journal homepage: www.elsevier.com/locate/dsr2 High abundance of salps in the coastal Gulf of Alaska during 2011: A first record of bloom occurrence for the northern Gulf Kaizhi Li a, Ayla J. Doubleday b, Moira D. Galbraith c, Russell R. Hopcroft b,n a Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China b Institute of Marine Science, University of Alaska, Fairbanks, AK 99775-7220, USA c Institute of Ocean Sciences, Fisheries and Oceans Canada, P.O. -
Phylum: Chordata
PHYLUM: CHORDATA Authors Shirley Parker-Nance1 and Lara Atkinson2 Citation Parker-Nance S. and Atkinson LJ. 2018. Phylum Chordata In: Atkinson LJ and Sink KJ (eds) Field Guide to the Ofshore Marine Invertebrates of South Africa, Malachite Marketing and Media, Pretoria, pp. 477-490. 1 South African Environmental Observation Network, Elwandle Node, Port Elizabeth 2 South African Environmental Observation Network, Egagasini Node, Cape Town 477 Phylum: CHORDATA Subphylum: Tunicata Sea squirts and salps Urochordates, commonly known as tunicates Class Thaliacea (Salps) or sea squirts, are a subphylum of the Chordata, In contrast with ascidians, salps are free-swimming which includes all animals with dorsal, hollow in the water column. These organisms also ilter nerve cords and notochords (including humans). microscopic particles using a pharyngeal mucous At some stage in their life, all chordates have slits net. They move using jet propulsion and often at the beginning of the digestive tract (pharyngeal form long chains by budding of new individuals or slits), a dorsal nerve cord, a notochord and a post- blastozooids (asexual reproduction). These colonies, anal tail. The adult form of Urochordates does not or an aggregation of zooids, will remain together have a notochord, nerve cord or tail and are sessile, while continuing feeding, swimming, reproducing ilter-feeding marine animals. They occur as either and growing. Salps can range in size from 15-190 mm solitary or colonial organisms that ilter plankton. in length and are often colourless. These organisms Seawater is drawn into the body through a branchial can be found in both warm and cold oceans, with a siphon, into a branchial sac where food particles total of 52 known species that include South Africa are removed and collected by a thin layer of mucus within their broad distribution. -
(Gulf Watch Alaska) Final Report the Seward Line: Marine Ecosystem
Exxon Valdez Oil Spill Long-Term Monitoring Program (Gulf Watch Alaska) Final Report The Seward Line: Marine Ecosystem monitoring in the Northern Gulf of Alaska Exxon Valdez Oil Spill Trustee Council Project 16120114-J Final Report Russell R Hopcroft Seth Danielson Institute of Marine Science University of Alaska Fairbanks 905 N. Koyukuk Dr. Fairbanks, AK 99775-7220 Suzanne Strom Shannon Point Marine Center Western Washington University 1900 Shannon Point Road, Anacortes, WA 98221 Kathy Kuletz U.S. Fish and Wildlife Service 1011 East Tudor Road Anchorage, AK 99503 July 2018 The Exxon Valdez Oil Spill Trustee Council administers all programs and activities free from discrimination based on race, color, national origin, age, sex, religion, marital status, pregnancy, parenthood, or disability. The Council administers all programs and activities in compliance with Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, Title II of the Americans with Disabilities Action of 1990, the Age Discrimination Act of 1975, and Title IX of the Education Amendments of 1972. If you believe you have been discriminated against in any program, activity, or facility, or if you desire further information, please write to: EVOS Trustee Council, 4230 University Dr., Ste. 220, Anchorage, Alaska 99508-4650, or [email protected], or O.E.O., U.S. Department of the Interior, Washington, D.C. 20240. Exxon Valdez Oil Spill Long-Term Monitoring Program (Gulf Watch Alaska) Final Report The Seward Line: Marine Ecosystem monitoring in the Northern Gulf of Alaska Exxon Valdez Oil Spill Trustee Council Project 16120114-J Final Report Russell R Hopcroft Seth L. -
Alaska Exclusive Economic Zone: Ocean Exploration and Research Bibliography
Alaska Exclusive Economic Zone: Ocean Exploration and Research Bibliography Hope Shinn, Librarian, NOAA Central Library Jamie Roberts, Librarian, NOAA Central Library NCRL subject guide 2020-08 doi: 10.25923/k182-6s39 September 2020 U.S. Department of Commerce National Oceanic and Atmospheric Administration Office of Oceanic and Atmospheric Research NOAA Central Library – Silver Spring, Maryland Table of Contents Background ............................................................................................................................................... 3 Scope ......................................................................................................................................................... 3 Sources Reviewed ..................................................................................................................................... 7 Acknowledgements ................................................................................................................................... 7 Section I: Aleutian Islands ......................................................................................................................... 8 Section II: Aleutian Islands, Beaufort Sea, Bering Sea, Chukchi Sea, Gulf of Alaska ............................... 26 Section III: Aleutian Islands, Bering Sea, Gulf of Alaska .......................................................................... 27 Section IV: Aleutian Islands, Central Gulf of Alaska ............................................................................... -
Uva-DARE (Digital Academic Repository)
UvA-DARE (Digital Academic Repository) Taxonomy of the subfamily Cyclosalpinae Yount, 1954 (Tunicata, Thaliacea) with descriptions of two new species. van Soest, R.W.M. Publication date 1974 Document Version Final published version Published in Beaufortia Link to publication Citation for published version (APA): van Soest, R. W. M. (1974). Taxonomy of the subfamily Cyclosalpinae Yount, 1954 (Tunicata, Thaliacea) with descriptions of two new species. Beaufortia, 22(288), 17-55. General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl) Download date:27 Sep 2021 BEAUFORTIA SERIES OF MISCELLANEOUS PUBLICATIONS INSTITUTE OF TAXONOMIC ZOOLOGY (ZOOLOGICAL MUSEUM) UNIVERSITY OF AMSTERDAM No. 288 Volume 22 July 31, 1974 Taxonomy of the subfamily Cyclosalpinae Yount, 1954 (Tunicata, Thaliacea), with descriptions of two new species R. -
Zooplankton Fecal Pellets, Marine Snow and Sinking Phytoplankton Blooms
AQUATIC MICROBIAL ECOLOGY Vol. 27: 57–102, 2002 Published February 18 Aquat Microb Ecol REVIEW Zooplankton fecal pellets, marine snow and sinking phytoplankton blooms Jefferson T. Turner* School for Marine Science and Technology, University of Massachusetts Dartmouth, 706 South Rodney French Boulevard, New Bedford, Massachusetts 02744-1221, USA ABSTRACT: Zooplankton fecal pellets have long been thought to be a dominant component of the sedimentary flux in marine and freshwater ecosystems, but that view is changing. The last 2 decades have seen publication of >500 studies using sediment traps, which reveal that zooplankton fecal pellets often constitute only a minor or variable proportion of the sedimentary flux. Substantial pro- portions of this flux are from organic aggregates (‘marine snow’) of various origins, including phyto- plankton blooms, which sediment directly to the benthos. It now appears that mainly large fecal pel- lets of macrozooplankton and fish are involved in the sedimentary flux. Smaller fecal pellets of microzooplankton and small mesozooplankton are mostly recycled or repackaged in the water column by microbial decomposition and coprophagy, contributing more to processes in the water column than flux to the benthos. The relative contributions of fecal pellets, marine snow and sinking phytoplankton to the vertical flux and recycling of materials in the water column are highly variable, dependent upon multiple interacting factors. These include variations in productivity, biomass, size spectra and composition of communities -
Periodic Swarms of the Salp Salpa Aspera in the Slope Water Off the NE United States: Biovolume, Vertical Migration, Grazing, and Vertical flux
ARTICLE IN PRESS Deep-Sea Research I 53 (2006) 804–819 www.elsevier.com/locate/dsr Periodic swarms of the salp Salpa aspera in the Slope Water off the NE United States: Biovolume, vertical migration, grazing, and vertical flux L.P. Madina,Ã, P. Kremerb, P.H. Wiebea, J.E. Purcellc,1, E.H. Horgana, D.A. Nemaziec aBiology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA bDepartment of Marine Sciences, University of Connecticut, Groton, CT 06340-6097, USA cUniversity of Maryland Center for Environmental Science, Horn Point Laboratory, P.O. Box 775, Cambridge, MA 21613, USA Received 22 October 2004; received in revised form 7 December 2005; accepted 19 December 2005 Available online 17 April 2006 Abstract Sampling during four summers over a twenty-seven year period has documented dense populations of Salpa aspera in the Slope Water south of New England, northeastern United States. The salps demonstrated a strong pattern of diel vertical migration, moving to depth (mostly 600–800 m) during the day and aggregating in the epipelagic ðo100 mÞ at night. Filtration rates determined from both gut pigment analysis and direct feeding experiments indicated that both the aggregate and solitary stages filtered water at rates ranging from 0.5 to 6 l hÀ1 mlÀ1 biovolume. Maximum displacement volumes of salps measured were 5:7lmÀ2 in 1986 and 1:6lmÀ2 in 1993. Depending on the year, the sampled salp populations were calculated to clear between 8 and 74% of the upper 50 m during each 8 h night. Total fecal output for the same populations was estimated to be between 5 and 91 mg C mÀ2 nightÀ1. -
Checklist of the Salps (Tunicata, Thaliacea) from the Western Caribbean Sea with a Key for Their Identification and Comments on Other North Atlantic Salps
Zootaxa 3210: 50–60 (2012) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2012 · Magnolia Press ISSN 1175-5334 (online edition) Checklist of the salps (Tunicata, Thaliacea) from the Western Caribbean Sea with a key for their identification and comments on other North Atlantic salps CLARA MARÍA HEREU1,2 & EDUARDO SUÁREZ-MORALES1 1Departamento de Ecología y Sistemática Acuática, El Colegio de la Frontera Sur, Av. Centenario Km 5.5, CP 77014, Chetumal, Quin- tana Roo, Mexico 2Current Address: Departamento de Ecología, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, CP 22860, Ensenada, Baja California, México. E-mail: [email protected] / [email protected] Abstract In waters of the Northwestern Atlantic pelagic tunicates may contribute significantly to the plankton biomass; however, the regional information on the salp fauna is scarce and limited to restricted sectors. In the Caribbean Sea (CS) and the Gulf of Mexico (GOM) the composition of the salpid fauna is still poorly known and this group remains among the less studied zooplankton taxa in the Northwestern Tropical Atlantic. A revised checklist of the salp species recorded in the North At- lantic (NA, 0–40° N) is provided herein, including new information from the Western Caribbean. Zooplankton samples were collected during two cruises (March 2006, January 2007) within a depth range of 0–941 m. A total of 14 species were recorded in our samples, including new records for the CS and GOM area (Cyclosalpa bakeri Ritter 1905), for the CS (Cy- closalpa affinis (Chamisso, 1819)), and for the Western Caribbean (Salpa maxima Forskål, 1774). -
Abundance and Grazing Effects of Cyclosalpa Bakeri in the Subarctic Pacific
MARINE ECOLOGY PROGRESS SERIES Published October 16 Mar Ecol Prog Ser Abundance and grazing effects of Cyclosalpa bakeri in the subarctic Pacific 'Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA 'University of Maryland Center for Environmental Science, Horn Point Laboratory, PO Box 775, Cambridge, Maryland 21613, USA 3College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon 97331, USA ABSTRACT. Ecological effects of populations of the salp Cyclosalpa bakeri were studied in late summer of 1984, 1987 and 1988 dunng the Subarctic Pacific Ecosystem Research (SUPER) project at Station P in the northeast Pacific. Salps occurred largely in the top 60 m, with biomass values ranging from 76 to 3621 mg C m-'. Three approaches were taken to estimate the grazing impact of these popu- lation~.C. bakeri removed from 1.6 to 136.6% of daily primary production and 1.3 to 56.8% of the diatom stocks in August 1988. On average, feeding rates of the salps predicted clearance of all particles 25.0 pm from 1.2 to 49.2% of the water column per day in 1984 and 1988. Although excretion of dis- solved N appears negligible, production of fecal C and N can be high, as much as 875 mg C and 110 mg N m-' d-' at the highest population density sampled Although the salps probably do not have a sig- nificant grazing impact on the small cells (15.0 pm) which are responsible for most of the production, they may be important in controlling populations of diatoms which typically occur in late summer at Station P. -
Salp Distribution and Grazing in a Saline Intrusion Off NW Spain
Journal of Marine Systems 42 (2003) 1–11 www.elsevier.com/locate/jmarsys Salp distribution and grazing in a saline intrusion off NW Spain In˜aki Huskin*, Ma. Jose´ Elices, Ricardo Anado´n Depto. B.O.S. Area de Ecologı´a, University of Oviedo, C/Catedra´tico Rodrigo Urı´a s/n 33071, Oviedo, Spain Received 19 June 2002; accepted 7 February 2003 Abstract Salp distribution and grazing were studied along three transects (19 stations) and a Lagrangian phase (7 stations) off Galician coast (NW Spain) in November 1999 during GIGOVI 99 cruise. A poleward saline intrusion was detected at the shelf-break, reaching salinity values above 35.90 u.p.s. at 100-m depth. The salp community was dominated by Salpa fusiformis, although Cyclosalpa bakeri, Thalia democratica and Iasis zonaria were also found in the study area. Total salp abundance ranged from 4 to 4500 ind mÀ 2, representing biomass values between 0.2 and 2750 mg C mÀ 2. Maximum densities were located in the frontal area separating the saline body from coastal waters. S. fusiformis pigment ingestion was estimated using the gut fluorescence method. Gut contents were linearly related to salp body size. Total pigment ingestion ranged from 0.001 to 15 mg Chl-a mÀ 2 dÀ 1, with maximum values at the coastal edge of the saline body. Estimated ingestion translates into an average daily grazing impact of 7% of chlorophyll standing stock, ranging from < 1% to 77%. D 2003 Elsevier Science B.V. All rights reserved. Keywords: Salp distribution; Salpa fusiformis; Saline intrusion; Grazing; Gut content; Galicia; NW Spain 1. -
Reports VOLUME 43 1 January to 31 December 2001
CALIFORNIA COOPERATIVE OCEANIC FISHERIES INVESTIGATIONS Reports VOLUME 43 1 January to 31 December 2001 Cooperating Agencies: CALIFORNIA DEPARTMENT OF FISH AND GAME UNIVERSITY OF CALIFORNIA, SCRIPPS INSTITUTION OF OCEANOGRAPHY NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, NATIONAL MARINE FISHERIES SERVICE CALCOFI COORDINATOR Kevin Hill EDITOR Joni Harlan This report is not copyrighted, except where otherwise indicated, and may be reproduced in other publications provided credit is given to the California Cooperative Oceanic Fisheries Investigations and to the author(s). Inquiries con- cerning this report should be addressed to CalCOFI Coordinator, 8604 La Jolla Shores Drive, La Jolla, CA 92037-1508. EDITORIAL BOARD Laura Rogers-Bennett Michael Tillman Elizabeth Venrick Printed and distributed May 2003, La Jolla, California ISSN 0575-3317 CalCOFI Rep., Vol. 43, 2002 CONTENTS In Memoriam Mia Jean Tegner . 5 I. Reports, Review, and Publications Report of the CalCOFI Committee . 9 Review of Some California Fisheries for 2001: Market Squid, Sea Urchin, Dungeness Crab, Lobster, Prawn, Abalone, Groundfish, Swordfish and Shark, Coastal Pelagic Finfish, Ocean Salmon, Nearshore Live-Fish, Pacific Herring, White Seabass, and Kelp . 13 The State of the California Current, 2001–2002: Will the California Current System Keep Its Cool, or Is El Niño Looming? Franklin B. Schwing , Steven J. Bograd, Curtis A. Collins, Gilberto Gaxiola-Castro, Joaquin García, Ralf Goericke, José Goméz-Valdéz, Adriana Huyer, K. David Hyrenbach, P. Michael Kosro, Bertha E. Lavaniegos, Ronald J. Lynn, Arnold W. Mantyla, Mark D. Ohman, William T. Peterson, Robert L. Smith, William J. Sydeman, Elizabeth Venrick, and Patricia A. Wheeler . 31 Publications . 69 II. Symposium of the CalCOFI Conference, 2001 REBUILDING CALIFORNIA’S ABALONE STOCKS .