The European Landing Obligation

Total Page:16

File Type:pdf, Size:1020Kb

The European Landing Obligation Sven Sebastian Uhlmann Clara Ulrich Steven J. Kennelly Editors The European Landing Obligation Reducing Discards in Complex, Multi-Species and Multi-Jurisdictional Fisheries The European Landing Obligation Sven Sebastian Uhlmann • Clara Ulrich Steven J. Kennelly Editors The European Landing Obligation Reducing Discards in Complex, Multi-Species and Multi-Jurisdictional Fisheries Editors Sven Sebastian Uhlmann Clara Ulrich Flanders Research Institute Technical University of Denmark for Agriculture, Fisheries and Food Kgs. Lyngby, Denmark Oostende, Belgium Steven J. Kennelly IC Independent Consulting Cronulla, NSW, Australia ISBN 978-3-030-03307-1 ISBN 978-3-030-03308-8 (eBook) https://doi.org/10.1007/978-3-030-03308-8 Library of Congress Control Number: 2018966345 © The Editor(s) (if applicable) and The Author(s) 2019. This book is an open access publication. Open Access This book is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. The images or other third party material in this book are included in the book’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the book’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors, and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. This Springer imprint is published by the registered company Springer Nature Switzerland AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland For all who are interested in sustainable fisheries Foreword In 2011, European policymakers initiated a major reform of the Common Fisheries Policy (CFP) to improve the Union’s fisheries management system, a challenge that proved necessary given the state of fish stocks in European waters. Balancing environmental and socio-economic objectives in fisheries management was imper- ative. The main objective of the reform was therefore to ensure the preservation of marine resources while increasing the competitiveness of European fishing fleets. These two aspects are not antagonistic but complementary, because the preservation of fisheries resources constitutes a prerequisite for a successful fishing sector. This principle has been assimilated by fishers, who also understood that an overhaul was necessary to ensure the sustainability of their activities. There is no need to remind the reader that the task incumbent on the European Parliament and the Council was far-reaching. After months of intense institutional negotiations, the revised CFP was introduced in 2013, articulated as two flagship measures: (i) reach the objective of maximum sustainable yield (MSY) in 2020 and (ii) introduce the Landing Obligation. Whether or not we consider the Landing Obligation as being adapted to the overall objectives of the CFP will not be the subject of my remarks. Whilst it is crucial that the Union’s fisheries management system should improve selectivity of catches and so contribute to the sustainability of fisheries, I have personally been a long-time opponent to the obligation to land. But only time will tell whether this measure will prove successful. If the means of action might be controversial and open to debate, the overall sustainability objective is undeniable. For the past 5 years, we have gradually introduced the measures necessary for the implementation of the CFP. In 2015, I was acting as the rapporteur for the imple- mentation of the Landing Obligation (omnibus regulation) where my objective was to ensure a smooth transition for the fisheries sector while respecting the principle of sustainability and preservation of marine resources. The CFP imposes a step-by-step organisation of the Landing Obligation with full implementation on 1 January 2019. This represents a huge challenge for both the fisheries sector, the legislators and the scientific community, whose support are essential to ensure the implementation of the Landing Obligation. vii viii Foreword The scientific community is a crucial ally in this process and plays a central role in helping fishers and the sector to adapt to the Landing Obligation through innovative means. The Landing Obligation has been the subject of a lot of scientific research, regarding both its relevance and feasibility as well as the means to achieve it. The Committee on Fisheries that I chair at the European Parliament was regularly informed of the latest studies available. The main observation about the Landing Obligation remains the same: it will be hard to implement and will require a lot of mobilisation from the sector. The Landing Obligation may lead to clear socio- economic consequences for the fisheries sector. A major challenge is the so-called choke effect in mixed fisheries. This matter has real socio-economic consequences for many fisheries. Therefore, significant efforts must be made in research and development to ease the implementation of the Landing Obligation. For the Landing Obligation to prove successful, another crucial aspect must be taken into account – an appropriate and effective control regulation. Without proper control and enforcement, the Landing Obligation will fail in its objectives and will not fulfil its expectations. Scientific research and new technologies will also be very helpful in that area. Once again, I would like to underline the importance of science in designing a sustainable fisheries management system. Reliable scientific data is a key component of the CFP. In that sense, scientists work in a remarkable way to help create a better understanding of maritime resources and ecosystems. The Landing Obligation is an example of the close interaction of the scientific community with the CFP, as shown by this book. European Parliament, Brussels, Belgium Alain Cadec August 2018 Preface The Common Fisheries Policy of the European Union was reformed in 2013 to improve the conservation of marine biological resources and the viability of the fishing sector and reduce unsustainable fishing practices (European Union 2013). One of the cornerstones of the reform is Article 15 (termed the Landing Obligation, LO), stipulating the obligation to bring to land all catches of quota- or size-regulated species with the overall aim to gradually eliminate discards. The United Nations Food and Agricultural Organisation’s (FAO) Fisheries Glos- sary (FAO 2018) describes discards as the proportion of the total organic material of animal origin in the catch, which is thrown away or dumped at sea, for whatever reason. It does not include plant material and post- harvest waste such as offal and bycatch as the part of a catch of a fishing unit taken incidentally in addition to the target species towards which fishing effort is directed. Some or all of it may be returned to the sea as discards, usually dead or dying. Bycatch and discards may be dead or alive, depending on the severity of any sustained injury and stress suffered by being caught and discarded (Davis 2002). Globally, it has been estimated that between 7 and 10 million tonnes of commer- cial fisheries catches are discarded annually (Kelleher 2005; Zeller et al. 2018). In Europe, the North-East Atlantic and North Sea have been identified as “discard hotspots” with a number of discard-intensive fisheries operating in the area (Guillen et al. 2018). The levels of discards vary across regions, species and fisheries (Uhlmann et al. 2013; Catchpole et al. 2017), and the reasons for discarding usually fall within four categories: (i) fish are too small (minimum size restrictions), (ii) quota restrictions (no right to land), (iii) low market value and/or (iv) fish are damaged. Discarding possibly contributes to European fish stocks being fished at levels above those delivering maximum sustainable yields (MSY), and that total removals are, at least for some fisheries, higher than reported due to unreported landings and discards (IUU; Zeller et al. 2018). ix x Preface To reduce unwanted catch, European institutions have developed and introduced the Landing Obligation (LO) policy whereby catches of regulated species in European waters, or by Union vessels in international waters, must be brought back to shore and are deducted from applicable quotas, unless exempted. Paradoxically, under the LO, fishers are asked to potentially increase mortality of unwanted catches by bringing them to shore instead of discarding them at sea (Borges 2015). The reasoning behind this is that bringing in unwanted catches of very low market value will incur additional costs, and this should incentivise fishers to avoid catching them in the first place (European Commission 2012; Condie et al. 2013). But until this happens, there remains a risk that fishing mortality will increase under the LO instead of decreasing. Due to the LO, for the first time in its history, the Common Fisheries Policy is shifting its focus from landed catches to all catches, including discards. Deducting unwanted catches from quota shares increases variability in fishing opportunities, especially in mixed, multispecies fisheries.
Recommended publications
  • The Landing Obligation and Its Implications on the Control of Fisheries
    DIRECTORATE-GENERAL FOR INTERNAL POLICIES POLICY DEPARTMENT B: STRUCTURAL AND COHESION POLICIES FISHERIES THE LANDING OBLIGATION AND ITS IMPLICATIONS ON THE CONTROL OF FISHERIES STUDY This document was requested by the European Parliament's Committee on Fisheries. AUTHORS Ocean Governance Consulting: Christopher Hedley Centre for Environment, Fisheries and Aquaculture Science: Tom Catchpole, Ana Ribeiro Santos RESPONSIBLE ADMINISTRATOR Marcus Breuer Policy Department B: Structural and Cohesion Policies European Parliament B-1047 Brussels E-mail: [email protected] EDITORIAL ASSISTANCE Adrienn Borka Lyna Pärt LINGUISTIC VERSIONS Original: EN ABOUT THE PUBLISHER To contact the Policy Department or to subscribe to its monthly newsletter please write to: [email protected] Manuscript completed in September 2015. © European Union, 2015. Print ISBN 978-92-823-7938-7 doi:10.2861/694624 QA-02-15-709-EN-C PDF ISBN 978-92-823-7939-4 doi:10.2861/303902 QA-02-15-709-EN-N This document is available on the Internet at: http://www.europarl.europa.eu/studies DISCLAIMER The opinions expressed in this document are the sole responsibility of the author and do not necessarily represent the official position of the European Parliament. Reproduction and translation for non-commercial purposes are authorized, provided the source is acknowledged and the publisher is given prior notice and sent a copy. DIRECTORATE-GENERAL FOR INTERNAL POLICIES POLICY DEPARTMENT B: STRUCTURAL AND COHESION POLICIES FISHERIES THE LANDING OBLIGATION AND ITS IMPLICATIONS ON THE CONTROL OF FISHERIES STUDY Abstract This study reviews the impacts of the new Common Fisheries Policy (CFP) rules requiring catches in regulated fisheries to be landed and counted against quotas of each Member State ("the landing obligation and requiring that catch of species subject to the landing obligation below a minimum conservation reference size be restricted to purposes other than direct human consumption.
    [Show full text]
  • Case Study Price Structure in the Supply Chain for Plaice in the Netherlands
    Case study Price structure in the supply chain for plaice in the Netherlands Last update: May 2016 Maritime Affairs and Fisheries Contents SUMMARY ...................................................................................................................................... 1 0 TASK REMINDER – SCOPE AND CONTENT .................................................................................. 2 0.1 CASE STUDY SCOPE ............................................................................................................................. 2 0.2 CONTENT OF THE DOCUMENT ............................................................................................................... 2 1 DESCRIPTION OF THE PRODUCT................................................................................................ 3 1.1 BIOLOGICAL AND COMMERCIAL CHARACTERISTICS .................................................................................... 3 1.2 CATCHES AND AVAILABILITY OF PLAICE ................................................................................................... 5 2 THE EU MARKETS FOR PLAICE ................................................................................................... 9 2.1 STRUCTURE OF THE EU MARKET ........................................................................................................... 9 Apparent market by Member State ....................................................................................... 9 Imports ................................................................................................................................
    [Show full text]
  • Plaice (Pleuronectes Platessä) Contents
    1-group plaice (Pleuronectes platessä) Contents Acknowledgements:............................................................................................................ 1 Abstract:.............................................................................................................................3 Chapter 1: General introduction.....................................................................................................4 Chapter 2: Fin-ray count variation in 0-group flatfish: plaice (Pleuronectesplatessa (L.)) and flounder (Platichthys flesus ( L.)) on the west coast of Ireland..............................15 Chapter 3: Variation in the fin ray counts of 0-group turbot (Psetta maxima L.) and brill (Scophthalmus rhombus L.) on the west coast of Ireland: 2006-2009.......................... 28 Chapter 4: Annual and spatial variation in the abundance length and condition of turbot (.Psetta maxima L.) on nursery grounds on the west coast of Ireland: 2000-2007.........41 Chapter 5: Variability in the early life stages of juvenile plaice (.Pleuronectes platessa L.) on west of Ireland nursery grounds; 2000 - 2007........................................................64 Chapter 6: The early life history of turbot (Psetta maxima L.) on nursery grounds along the west coast of Ireland: 2007 -2009, as described by otolith microstructure.............85 Chapter 7: The feeding ecology of 0-group turbot (Psetta maxima L.) and brill (Scophthalmus rhombus L.) on Irish west coast nursery grounds.................................96 Chapter
    [Show full text]
  • How Benthic Habitats and Bottom Trawling Affect Trait Composition in the Diet of European Plaice (Pleuronectes Platessa) in the North Sea
    HOW BENTHIC HABITATS AND BOTTOM TRAWLING AFFECT TRAIT COMPOSITION IN THE DIET OF EUROPEAN PLAICE (PLEURONECTES PLATESSA) IN THE NORTH SEA Jacqueline Eggleton, Kenny A.J., Bolam S.G., Depestele J., Garcia C. IFS10, Saint Malo 11th-16th November 2017 ‘Integrating the role of marine benthic ecosystems in fisheries management’ Two fundamental questions confronted by fisheries scientists: 1. To what extent do commercial fish target their prey? 2. Do the impacts of bottom trawling on benthic assemblages contribute to sustaining these populations ? Need to understand links (as trophic interactions) between populations of demersal fish species and potential benthic invertebrate prey (food) which live on or in the seabed Our questions 1. Do commercial fish species target different benthic prey? 2. Do commercial fish species target benthic prey differently in different habitats? 3. Do commercial fish species target benthic prey that are resistant or favoured by fishing pressure? To provide functional links between predator and prey we use biological traits analysis (BTA) What data do we need? 1. What fish are eating Fish stomachs 2. Habitat information at the scale of the fishery Habitat map What data do we need? 1. What fish are eating Fish stomachs 2. Habitat information at the scale of the fishery Habitat map 3. An indication of fishing pressure VMS/Logbook 4. Information on the benthic fauna living in and on the seabed Fish stomachs ICES year of the stomach 1991 North Sea, Skagerrak and Kattegat ICES rectangle scale (30 x 30 nautical miles)
    [Show full text]
  • Fish and Fish Populations
    Intended for Energinet Document type Report Date March 2021 THOR OWF TECHNICAL REPORT – FISH AND FISH POPULATIONS THOR OWF TECHNICAL REPORT – FISH AND FISH POPULATIONS Project name Thor OWF environmental investigations Ramboll Project no. 1100040575 Hannemanns Allé 53 Recipient Margot Møller Nielsen, Signe Dons (Energinet) DK-2300 Copenhagen S Document no 1100040575-1246582228-4 Denmark Version 5.0 (final) T +45 5161 1000 Date 05/03/2021 F +45 5161 1001 Prepared by Louise Dahl Kristensen, Sanne Kjellerup, Danni J. Jensen, Morten Warnick https://ramboll.com Stæhr Checked by Anna Schriver Approved by Lea Bjerre Schmidt Description Technical report on fish and fish populations. Rambøll Danmark A/S DK reg.no. 35128417 Member of FRI Ramboll - THOR oWF TABLE OF CONTENTS 1. Summary 4 2. Introduction 6 2.1 Background 6 3. Project Plan 7 3.1 Turbines 8 3.2 Foundations 8 3.3 Export cables 8 4. Methods And Materials 9 4.1 Geophysical survey 9 4.1.1 Depth 10 4.1.2 Seabed sediment type characterization 10 4.2 Fish survey 11 4.2.1 Sampling method 12 4.2.2 Analysis of catches 13 5. Baseline Situation 15 5.1 Description of gross area of Thor OWF 15 5.1.1 Water depth 15 5.1.2 Seabed sediment 17 5.1.3 Protected species and marine habitat types 17 5.2 Key species 19 5.2.1 Cod (Gadus morhua L.) 20 5.2.2 European plaice (Pleuronectes platessa L.) 20 5.2.3 Sole (Solea solea L.) 21 5.2.4 Turbot (Psetta maxima L.) 21 5.2.5 Dab (Limanda limanda) 22 5.2.6 Solenette (Buglossidium luteum) 22 5.2.7 Herring (Clupea harengus) 22 5.2.8 Sand goby (Pomatoschistus minutus) 22 5.2.9 Sprat (Sprattus sprattus L.) 23 5.2.10 Sandeel (Ammodytes marinus R.
    [Show full text]
  • Online Supplement Table 4.2 List of Species Assessed for Discard
    Online Supplement Table 4.2 List of species assessed for discard survival in Europe and for which evidence was generated to support granted exemptions to the Landing Obligation on the basis of ‘high survival’ (European Council enacting delegated regulation), specifying fishing gear, location of observational/experimental study and any specific treatment associated with a corresponding discard survival estimate. MD, maximum number of days that a species was monitored for post-release survival; N, number of specimens assessed. In some cases, average (per fishery/trip/gear operation) minimum % mortality was given instead of the minimum and maximum, and in some cases *, indicates 95% confidence interval limits. n/a, information was not available or could not be located. Estimate d discard survival Mi m Ma Key Scientific Fishing nD Delegated Location / ICES min% ax xD N Treatment Reference species name gear ay Regulation (EU) No % ays s Invertebr ates Carpet Venerupe Dredges Western n/ Pescamed 2016; 2017/86; 2018/153; n/a n/a n/a n/a n/a clams ris spp. (HMD) Mediterranean Sea a 2018 2018/2036 Pecten Dredges Western n/ Pescamed 2016; 2017/86; 2018/153; Scallop n/a n/a n/a n/a n/a jacobeus (HMD) Mediterranean Sea a 2018 2018/2036 Venus Venus Dredges Western n/ Pescamed 2016; 2017/86; 2018/153; n/a n/a n/a n/a n/a shells spp. (HMD) Mediterranean Sea a 2018 2018/2036 Nephrops Pots, 10 Norway West of Scotland 96 x norvegic traps, 99% 0 11 25 Controls (Creel caught) Wileman et al. 1999 2018/46 lobster (VIa) 6 us creels % Nephrops Norway Nephrops West of Scotland 37 96 x norvegic 19% 11 25 Trawl Discards (Summer) Wileman et al.
    [Show full text]
  • Differences in Juvenile Plaice and Flounder Otolith Microchemistry from the Inner Danish Waters Elliot J
    Differences in juvenile plaice and flounder otolith microchemistry from the Inner Danish Waters Elliot J. Brown Patrick Reis-Santos Bronwyn M. Gillanders Josianne G. Støttrup Introduction – the wider project Describing juvenile habitat quality for recreationally important fish species of the Inner Danish Waters. 1. [Presence/Absence, Density, Growth] ~ [Physical Factors] + [Biological Factors] VS [Presence/Absence, Density, Growth] ~ [Physical Factors] 2. [Presence/Absence, Density, Growth] ~ [Physical Factors] 3. Apply models to identify potential juvenile habitats European Flounder European Plaice Platichthys flesus Pleuronectes platessa 2 DTU Aqua, Technical University of Denmark Juvenile plaice and flounder otolith 12-11-2017 microchemistry from the IDW Introduction – this specific project 4. Can otolith microchemistry be used to correctly assign individuals back to juvenile growth regions across contiguous areas? Vasconcelos et al, 2007 Bailey et al, 2015 Beck et al, 2001 3 DTU Aqua, Technical University of Denmark Juvenile plaice and flounder otolith 12-11-2017 microchemistry from the IDW Introduction – this specific project Question 1. • Is there a difference in the levels of different elemental components of sagittal otoliths between hybridising(?) con-familials (flounder and plaice) where they are living together? Question 2. • Is it possible to differentiate between contiguous coastal juvenile habitat areas for plaice using otolith microchemistry? 4 DTU Aqua, Technical University of Denmark Juvenile plaice and flounder otolith 12-11-2017 microchemistry from the IDW n = 113 Field Collections n = 37 n = 36 5 DTU Aqua, Technical University of Denmark Juvenile plaice and flounder otolith 12-11-2017 microchemistry from the IDW Field Collections • Fish killed benzocaine at 250g/mL in aerated seawater.
    [Show full text]
  • Gibson-Et-Al-Netherlands.Pdf
    Fisheries Centre The University of British Columbia Working Paper Series Working Paper #2015 - 46 Preliminary reconstruction of total marine fisheries catches for the Netherlands in the North Sea (1950-2010) Darah Gibson, Kyrstn Zylich and Dirk Zeller Year: 2015 Email: [email protected] This working paper is made available by the Fisheries Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. PRELIMINARY RECONSTRUCTION OF TOTAL MARINE FISHERIES CATCHES FOR THE NETHERLANDS IN THE NORTH SEA (1950-2010) Darah Gibson, Kyrstn Zylich and Dirk Zeller Sea Around Us, Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4, Canada [email protected]; [email protected]; [email protected] ABSTRACT Dutch marine fisheries are reconstructed from 1950-2010 within its Exclusive Economic Zone (EEZ) equivalent waters in the North Sea. The International Council for the Exploration of the Seas (ICES) publically available electronic data are used a ‘reporting’ baseline for the reconstruction. Data and information from ICES stock assessments, peer-reviewed literature, grey literature and local experts are used to estimate Illegal, Unreported and Unregulated (IUU) catch. Estimates of IUU catch are made in terms of discards, unreported, over-reported, and recreational and subsistence catch and are used to improve the reported baseline. Our preliminary reconstructed catch within Dutch EEZ equivalent waters is nearly 2 times the reported baseline catch. The reconstructed catch slightly decreases from a catch of 233,000 t in 1950 to 176,000 t in 2010 with a peak of nearly 500,000 t in 1985.
    [Show full text]
  • Gill Rakers and Teeth of Three Pleuronectiform Species (Teleostei) of the Baltic Sea: a Microichthyological Approach
    Estonian Journal of Earth Sciences, 2017, 66, 1, 21–46 https://doi.org/10.3176/earth.2017.01 Gill rakers and teeth of three pleuronectiform species (Teleostei) of the Baltic Sea: a microichthyological approach Tiiu Märssa, Mark V. H. Wilsonb, Toomas Saata and Heli Špileva a Estonian Marine Institute, University of Tartu, Mäealuse St. 14, 12618 Tallinn, Estonia; [email protected], [email protected], [email protected] b Department of Biological Sciences and Laboratory for Vertebrate Paleontology, University of Alberta, Edmonton, Alberta T6G 2E9, Canada, and Department of Biology, Loyola University Chicago, Chicago, Illinois, USA; [email protected] Received 16 September 2016, accepted 14 November 2016 Abstract. In this microichthyological study the teeth and bony cores of gill rakers of three pleuronectiform species [European plaice Pleuronectes platessa Linnaeus, 1758 and European flounder Platichthys flesus trachurus (Duncer, 1892), both in the Pleuronectidae, and turbot Scophthalmus maximus (Linnaeus, 1758) in the Scophthalmidae] of the Baltic Sea are SEM imaged, described and compared for the first time. The shape and number of teeth in jaws and on pharyngeal tooth plates as well as the shape, size and number of the bony cores of gill rakers in these taxa differ. The European plaice and European flounder carry incisiform teeth anteriorly in their jaws and smoothly rounded, molariform teeth on pharyngeal tooth plates; the teeth of the plaice are more robust. The gill rakers have similar gross morphology, occurring as separate conical thornlets on gill arches. The bony cores of these thornlets (rakers) consist of vertical ribs with connective segments between them.
    [Show full text]
  • Handbook of Fish Age Estimation Protocols and Validation Methods
    #346 APRIL 2019 Handbook of fish age estimation protocols and validation methods ICES COOPERATIVE RESEARCH REPORT RAPPORT DES RECHERCHES COLLECTIVES ICES INTERNATIONAL COUNCIL FOR THE EXPLORATION OF THE SEA CIEM CONSEIL INTERNATIONAL POUR L’EXPLORATION DE LA MER ICES COOPERATIVE RESEARCH REPORT RAPPORT DES RECHERCHES COLLECTIVES NO. 346 APRIL 2019 Handbook of fish age estimation protocols and validation methods Editors Francesca Vitale • Lotte Worsøe Clausen • Gráinne Ní Chonchúir International Council for the Exploration of the Sea Conseil International pour l’Exploration de la Mer H. C. Andersens Boulevard 44–46 DK-1553 Copenhagen V Denmark Telephone (+45) 33 38 67 00 Telefax (+45) 33 93 42 15 www.ices.dk [email protected] Recommended format for purposes of citation: Vitale, F., Worsøe Clausen, L., and Ní Chonchúir, G. (Eds.) 2019. Handbook of fish age estimation protocols and validation methods. ICES Cooperative Research Report No. 346. 180 pp. http://doi.org/10.17895/ices.pub.5221 Series Editor: Emory D. Anderson The material in this report may be reused for non-commercial purposes using the rec- ommended citation. ICES may only grant usage rights of information, data, images, graphs, etc. of which it has ownership. For other third-party material cited in this re- port, you must contact the original copyright holder for permission. For citation of da- tasets or use of data to be included in other databases, please refer to the latest ICES data policy on the ICES website. All extracts must be acknowledged. For other repro- duction requests please contact the General Secretary. This document is the product of an Expert Group under the auspices of the International Council for the Exploration of the Sea and does not necessarily represent the view of the Council.
    [Show full text]
  • The Trophic Structure of a Wadden Sea Fish Community and Its Feeding Interactions with Alien Species
    The trophic structure of a Wadden Sea fish community and its feeding interactions with alien species Die trophische Struktur einer Fischgemeinschaft des Wattenmeeres und deren Fraßinteraktionen mit gebietsfremden Arten DISSERTATION Zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel vorgelegt von Florian Kellnreitner Kiel, 2012 Referent: Dr. habil. Harald Asmus Korreferent: Prof. Dr. Thorsten Reusch Tag der mündlichen Prüfung: 24. April 2012 Zum Druck genehmigt: Contents Summary .............................................................................................................................................. 1 Zusammenfassung ................................................................................................................................ 3 1. General Introduction ........................................................................................................................ 5 2. The Wadden Sea of the North Sea and the Sylt-Rømø Bight .........................................................14 3. Seasonal variation of assemblage and feeding guild structure of fish species in a boreal tidal basin. ..................................................................................................................27 4. Trophic structure of the fish community in a boreal tidal basin, the Sylt- Rømø Bight, revealed by stable isotope analysis .........................................................................55 5. Feeding interactions
    [Show full text]
  • Fish Stocks United Nations Food and Agriculture Organization (FAO)
    General situation of world fish stocks United Nations Food and Agriculture Organization (FAO) Contents: 1. Definitions 2. Snapshot of the global situation 3. Short list of "depleted" fish stocks 4. Global list of fish stocks ranked as either "overexploited," "depleted," or recovering by region 1. Definitions Underexploited Undeveloped or new fishery. Believed to have a significant potential for expansion in total production; Moderately exploited Exploited with a low level of fishing effort. Believed to have some limited potential for expansion in total production; Fully exploited The fishery is operating at or close to an optimal yield level, with no expected room for further expansion; Overexploited The fishery is being exploited at above a level which is believed to be sustainable in the long term, with no potential room for further expansion and a higher risk of stock depletion/collapse; Depleted Catches are well below historical levels, irrespective of the amount of fishing effort exerted; Recovering Catches are again increasing after having been depleted 2. Snapshot of the global situation Of the 600 marine fish stocks monitored by FAO: 3% are underexploited 20% are moderately exploited 52% are fully exploited 17% are overexploited 7% are depleted 1% are recovering from depletion Map of world fishing statistical areas monitored by FAO Source: FAO's report "Review of the State of World Marine Fisheries Resources", tables D1-D17, ftp://ftp.fao.org/docrep/fao/007/y5852e/Y5852E23.pdf 3. Fish stocks identified by FAO as falling into its
    [Show full text]