Ard David Brodeur
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
An Observation of Two Oceanic Salp Swarms in the Tasman Sea: Thetys Vagina and Cyclosalpa Affinis Natasha Henschke1,2,3*, Jason D
Henschke et al. Marine Biodiversity Records (2016) 9:21 DOI 10.1186/s41200-016-0023-8 MARINE RECORD Open Access An observation of two oceanic salp swarms in the Tasman Sea: Thetys vagina and Cyclosalpa affinis Natasha Henschke1,2,3*, Jason D. Everett1,2,3 and Iain M. Suthers1,2,3 Abstract Background: Large oceanic salps are rarely encountered. The highest recorded biomasses of the salps Thetys vagina (852 g WW m−3)andCyclosalpa affinis (1149 g WW m−3) were observed in the Tasman Sea during January 2009. Results: Due to their fast sinking rates the carcasses and faecal pellets of these and other large salps play a significant role in carbon transport to the seafloor. We calculated that faecal pellets from these swarms could have contributed up to 67 % of the mean organic daily carbon flux in the area. This suggests that the flux of carbon from salp swarms are not accurately captured in current estimates. Conclusion: This study contributes information on salp abundance and biomass to a relatively understudied field, improving estimates for biogeochemical cycles. Background (Henschke et al., 2013) can increase the carbon flux in an The role of gelatinous zooplankton, such as salps, pyro- area up to ten-fold the daily average (Fischer et al., 1988) somes and cnidarians, in ocean food webs and biogeo- for a sustained period of time (Smith et al. 2014). chemical cycling has garnered increased attention in Due to their regular occurrence (Henschke et al., recent years (Lebrato et al., 2011; Henschke et al., 2013; 2014) and coastal dominance (Henschke et al 2011), Lebrato et al., 2013; Smith et al. -
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. -
The Secret Lives of JELLYFISH Long Regarded As Minor Players in Ocean Ecology, Jellyfish Are Actually Important Parts of the Marine Food Web
The secret lives of JELLYFISH Long regarded as minor players in ocean ecology, jellyfish are actually important parts of the marine food web. BY GARRY HAMILTON ennifer Purcell watches intently as the boom of the research ship Moon jellyfish (Aurelia Skookum slowly eases a 3-metre-long plankton net out of Puget Sound aurita) contain more Jnear Olympia, Washington. The marine biologist sports a rain suit, calories than some which seems odd for a sunny day in August until the bottom of the net other jellyfish. is manoeuvred in her direction, its mesh straining from a load of moon jellyfish (Aurelia aurita). Slime drips from the bulging net, and long ten- tacles dangle like a scene from an alien horror film. But it does not bother Purcell, a researcher at Western Washington University’s marine centre in Anacortes. Pushing up her sleeves, she plunges in her hands and begins to count and measure the messy haul with an assuredness borne from nearly 40 years studying these animals. 432 | NATURE | VOL 531 | 24 MARCH 2016 © 2016 Macmillan Publishers Limited. All rights reserved FEATURE NEWS Most marine scientists do not share her enthusiasm for the creatures. also inaccessible, living far out at sea or deep below the light zone. They Purcell has spent much of her career locked in a battle to find funding often live in scattered aggregations that are prone to dramatic popula- and to convince ocean researchers that jellyfish deserve attention. But tion swings, making them difficult to census. Lacking hard parts, they’re she hasn’t had much luck. -
(Cciea) California Current Ecosystem Status Report, 2020
Agenda Item G.1.a IEA Team Report 2 March 2020 SUPPLEMENTARY MATERIALS TO THE CALIFORNIA CURRENT INTEGRATED ECOSYSTEM ASSESSMENT (CCIEA) CALIFORNIA CURRENT ECOSYSTEM STATUS REPORT, 2020 Appendix A LIST OF CONTRIBUTORS TO THIS REPORT, BY AFFILIATION NWFSC, NOAA Fisheries SWFSC, NOAA Fisheries Mr. Kelly Andrews Dr. Eric Bjorkstedt Ms. Katie Barnas Dr. Steven Bograd Dr. Richard Brodeur Ms. Lynn deWitt Dr. Brian Burke Dr. John Field Dr. Jason Cope Dr. Newell (Toby) Garfield (co-lead editor) Dr. Correigh Greene Dr. Elliott Hazen Dr. Thomas Good Dr. Michael Jacox Dr. Chris Harvey (co-lead editor) Dr. Andrew Leising Dr. Daniel Holland Dr. Nate Mantua Dr. Kym Jacobson Mr. Keith Sakuma Dr. Stephanie Moore Dr. Jarrod Santora Dr. Stuart Munsch Dr. Andrew Thompson Dr. Karma Norman Dr. Brian Wells Dr. Jameal Samhouri Dr. Thomas Williams Dr. Nick Tolimieri (co-editor) University of California-Santa Cruz Ms. Margaret Williams Ms. Rebecca Miller Dr. Jeannette Zamon Dr. Barbara Muhling Pacific States Marine Fishery Commission Dr. Isaac Schroeder Ms. Amanda Phillips Humboldt State University Mr. Gregory Williams (co-editor) Ms. Roxanne Robertson Oregon State University California Department of Public Health Ms. Jennifer Fisher Ms. Christina Grant Ms. Cheryl Morgan Mr. Duy Trong Ms. Samantha Zeman Ms. Vanessa Zubkousky-White AFSC, NOAA Fisheries California Department of Fish and Wildlife Dr. Stephen Kasperski Ms. Christy Juhasz Dr. Sharon Melin CA Office of Env. Health Hazard Assessment NOAA Fisheries West Coast Region Dr. Rebecca Stanton Mr. Dan Lawson Oregon Department of Fish and Wildlife Farallon Institute Dr. Caren Braby Dr. William Sydeman Mr. Matthew Hunter Point Blue Conservation Science Oregon Department of Agriculture Dr. -
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. -
The Lower Bathyal and Abyssal Seafloor Fauna of Eastern Australia T
The lower bathyal and abyssal seafloor fauna of eastern Australia T. O’hara, A. Williams, S. Ahyong, P. Alderslade, T. Alvestad, D. Bray, I. Burghardt, N. Budaeva, F. Criscione, A. Crowther, et al. To cite this version: T. O’hara, A. Williams, S. Ahyong, P. Alderslade, T. Alvestad, et al.. The lower bathyal and abyssal seafloor fauna of eastern Australia. Marine Biodiversity Records, Cambridge University Press, 2020, 13 (1), 10.1186/s41200-020-00194-1. hal-03090213 HAL Id: hal-03090213 https://hal.archives-ouvertes.fr/hal-03090213 Submitted on 29 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. O’Hara et al. Marine Biodiversity Records (2020) 13:11 https://doi.org/10.1186/s41200-020-00194-1 RESEARCH Open Access The lower bathyal and abyssal seafloor fauna of eastern Australia T. D. O’Hara1* , A. Williams2, S. T. Ahyong3, P. Alderslade2, T. Alvestad4, D. Bray1, I. Burghardt3, N. Budaeva4, F. Criscione3, A. L. Crowther5, M. Ekins6, M. Eléaume7, C. A. Farrelly1, J. K. Finn1, M. N. Georgieva8, A. Graham9, M. Gomon1, K. Gowlett-Holmes2, L. M. Gunton3, A. Hallan3, A. M. Hosie10, P. -
A5 BOOK ONLINE VERSION.Cdr
Book of Abstracts 4 - 6 NOVEMBER 2019 IZIKO SOUTH AFRICAN MUSEUM | CAPE TOWN | SOUTH AFRICA 6TH INTERNATIONAL JELLYFISH BLOOMS SYMPOSIUM CAPE TOWN, SOUTH AFRICA | 4 - 6 NOVEMBER 2019 PHOTO CREDIT: @Steven Benjamin ORGANISERS University of the Western Cape, Cape Town, South Africa SPONSORS University of the Western Cape, Cape Town, South Africa Iziko Museums of South Africa Two Oceans Aquarium De Beers Group Oppenheimer I&J Pisces Divers African Eagle Aix-Marseille Université, France Institut de Recherche pour le Développement, France LOCAL SCIENTIFIC COMMITTEE, LSC Mark J Gibbons (University of the Western Cape) Delphine Thibault (Aix-Marseille Université) Wayne Florence (IZIKO South African Museum) Maryke Masson (Two Oceans Aquarium) INTERNATIONAL STEERING COMMITTEE, ISC Mark J Gibbons (Africa) Agustin Schiariti (South America) Lucas Brotz (North America) Jing Dong (Asia) Jamileh Javidpour (Europe) Delphine Thibault (Wandering) 6TH INTERNATIONAL JELLYFISH BLOOMS SYMPOSIUM CAPE TOWN, SOUTH AFRICA | 4 - 6 NOVEMBER 2019 C ONTENT S Contents Message from the convenor Page 1 Opening ceremony Page 6 Programme Page 8 Poster sessions Page 16 Oral presentaons Page 21 Poster presentaons Page 110 Useful informaon Page 174 Index of authors Page 176 List of aendees Page 178 6TH INTERNATIONAL JELLYFISH BLOOMS SYMPOSIUM CAPE TOWN, SOUTH AFRICA | 4 - 6 NOVEMBER 2019 Message from the Convenor: Prof Mark Gibbons On behalf of the Local Organising Committee, it gives me great pleasure to welcome you to Cape Town and to the 6th International Jellyfish Blooms Symposium. It promises to be a suitable finale to Series I, which has seen us visit all continents except Antarctica. Episode One kicked off in North America during January 2000, when Monty Graham and Jennifer Purcell invited us to Gulf Shores. -
Marine Ecology Progress Series 491:165
Vol. 491: 165–175, 2013 MARINE ECOLOGY PROGRESS SERIES Published October 2 doi: 10.3354/meps10450 Mar Ecol Prog Ser Salp-falls in the Tasman Sea: a major food input to deep-sea benthos Natasha Henschke1,2,*, David A. Bowden3, Jason D. Everett1,2,4, Sebastian P. Holmes5,6, Rudy J. Kloser7, Raymond W. Lee8, Iain M. Suthers1,2 1Evolution and Ecology Research Centre, University of New South Wales, Sydney, New South Wales 2052, Australia 2Sydney Institute of Marine Science, Building 22, Chowder Bay Road, Mosman, New South Wales 2088, Australia 3National Institute of Water and Atmospheric Research Ltd. (NIWA), 301 Evans Bay Parade, Greta Point, Wellington 6021, New Zealand 4Plant Functional Biology and Climate Change Cluster, Faculty of Science, University of Technology Sydney, PO Box 123 Broadway, New South Wales 2007, Australia 5School of Biological Sciences, University of Sydney, Sydney, New South Wales 2006, Australia 6Water & Wildlife Ecology Group (WWEG), School of Science & Health, University of Western Sydney (UWS), Penrith, New South Wales 1797, Australia 7Commonwealth Scientific and Industrial Research Organisation (CSIRO) Marine Laboratories, PO Box 1538, Hobart, Tasmania 7001, Australia 8School of Biological Sciences, Washington State University, PO Box 644236, Pullman, Washington 99164-4236, USA ABSTRACT: Large, fast-sinking carcasses (food-falls) are an important source of nutrition to deep- sea benthic communities. In 2007 and 2009, mass depositions of the salp Thetys vagina were observed on the Tasman Sea floor between 200 and 2500 m depth, where benthic crustaceans were observed feeding on them. Analysis of a long-term (1981 to 2011) trawl survey database determined that salp biomass (wet weight, WW) in the eastern Tasman Sea regularly exceeds 100 t km−3 yr−1, with biomasses as high as 734 t km−3 recorded in a single trawl. -
The Feeding Habit of Sea Turtles Influences Their Reaction to Artificial
www.nature.com/scientificreports OPEN The feeding habit of sea turtles influences their reaction to artificial marine debris Received: 09 February 2016 Takuya Fukuoka1, Misaki Yamane1, Chihiro Kinoshita1, Tomoko Narazaki1, Greg J. Marshall2, Accepted: 27 May 2016 Kyler J. Abernathy2, Nobuyuki Miyazaki3 & Katsufumi Sato1 Published: 16 June 2016 Ingestion of artificial debris is considered as a significant stress for wildlife including sea turtles. To investigate how turtles react to artificial debris under natural conditions, we deployed animal-borne video cameras on loggerhead and green turtles in addition to feces and gut contents analyses from 2007 to 2015. Frequency of occurrences of artificial debris in feces and gut contents collected from loggerhead turtles were 35.7% (10/28) and 84.6% (11/13), respectively. Artificial debris appeared in all green turtles in feces (25/25) and gut contents (10/10), and green turtles ingested more debris (feces; 15.8 ± 33.4 g, gut; 39.8 ± 51.2 g) than loggerhead turtles (feces; 1.6 ± 3.7 g, gut; 9.7 ± 15.0 g). In the video records (60 and 52.5 hours from 10 loggerhead and 6 green turtles, respectively), turtles encountered 46 artificial debris and ingested 23 of them. The encounter-ingestion ratio of artificial debris in green turtles (61.8%) was significantly higher than that in loggerhead turtles (16.7%). Loggerhead turtles frequently fed on gelatinous prey (78/84), however, green turtles mainly fed marine algae (156/210), and partly consumed gelatinous prey (10/210). Turtles seemed to confuse solo drifting debris with their diet, and omnivorous green turtles were more attracted by artificial debris. -
Long-Term Time-Series Study of Salp Population Dynamics in the Sargasso Sea
Vol. 510: 111–127, 2014 MARINE ECOLOGY PROGRESS SERIES Published September 9 doi: 10.3354/meps10985 Mar Ecol Prog Ser Contribution to the Theme Section ‘Jellyfish blooms and ecological interactions’ Long-term time-series study of salp population dynamics in the Sargasso Sea Joshua P. Stone1,*, Deborah K. Steinberg1 1Department of Biological Sciences, Virginia Institute of Marine Science, College of William & Mary, PO Box 1346, Gloucester Point, VA 23062, USA ABSTRACT: Salps are bloom-forming, pelagic tunicates with high grazing rates on phytoplank- ton, with the potential to greatly increase vertical particle flux through rapidly sinking fecal pel- lets. However, the frequency and causes of salp blooms are not well known. We quantified salps from day and night zooplankton net tows in the epipelagic zone of the North Atlantic subtropical gyre as part of the Bermuda Atlantic Time-series Study (BATS). Salp species and size were quan- tified in biweekly to monthly tows from April 1994 to November 2011. Twenty-one species of salps occurred at the BATS site over this time period, and the most common bloom-forming salps were Thalia democratica, Salpa fusiformis, Weelia (Salpa) cylindrica, Cyclosalpa polae, and Iasis zonaria. Five species of salps exhibited diel vertical migration, and salp abundances varied sea- sonally, with T. democratica, S. fusiformis, and C. polae blooms coincident with the spring phyto- plankton bloom, and W. cylindrica blooms occurring more often in late summer. For T. democrat- ica, mean annual biomass increased slightly over the time series and was elevated every 3 yr, and biomass increased in the presence of cyclonic mesoscale eddies. -
106-128 Ruzicka 11/17/07 8:50 AM Page 106
106-128 Ruzicka 11/17/07 8:50 AM Page 106 RUZICKA ET AL.: SEASONAL FOOD WEB MODELS CalCOFI Rep., Vol. 48, 2007 SEASONAL FOOD WEB MODELS FOR THE OREGON INNER-SHELF ECOSYSTEM: INVESTIGATING THE ROLE OF LARGE JELLYFISH JAMES J. RUZICKA RICHARD D. BRODEUR AND THOMAS C. WAINWRIGHT Cooperative Institute for Marine Resources Studies National Oceanic and Atmospheric Administration Oregon State University Northwest Fisheries Science Center 2030 SE Marine Science Drive Fisheries Ecology Division Newport, Oregon 97365 2030 SE Marine Science Drive [email protected] Newport, Oregon 97365 ABSTRACT Jellyfish biomass has increased dramatically in many We developed two seasonal food-web models, spring ecosystems around the world in the past two decades and summer, within the Ecopath framework for the (Mills 2001; Brodeur et al. 2002; Kawahara et al. 2006; Oregon upwelling ecosystem to investigate the role of Attrill et al. 2007). Jellyfish have several characteristics large jellyfish as competitors for zooplankton prey. We that place them in a unique and influential position used information about fish and jellyfish biomass, dis- within an ecosystem, which can have negative affects tribution, and diet derived from pelagic trawl survey upon pelagic fish: high rates of reproduction and growth, data. Information about lower trophic-level production generally broad diets that can overlap with planktivo- was acquired from zooplankton survey data. The mod- rous fish, and few predators. Increases in jellyfish bio- els indicate that in spring, jellyfish are a modest con- mass are generally accompanied by decreases in fish sumer of zooplankton, and forage fishes dominate the biomass (e.g., Lynam et al. -
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).