1
|
Monk CT, Chéret B, Czapla P, Hühn D, Klefoth T, Eschbach E, Hagemann R, Arlinghaus R. Behavioural and fitness effects of translocation to a novel environment: Whole‐lake experiments in two aquatic top predators. J Anim Ecol 2020; 89:2325-2344. [DOI: 10.1111/1365-2656.13298] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 06/04/2020] [Indexed: 01/14/2023]
Affiliation(s)
- Christopher T. Monk
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | - Bernard Chéret
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | - Philipp Czapla
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | - Daniel Hühn
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | | | - Erik Eschbach
- Thünen Institute of Fisheries Ecology Bremerhaven Germany
| | - Robert Hagemann
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
| | - Robert Arlinghaus
- Department of Biology and Ecology of FishesLeibniz‐Institute of Freshwater Ecology and Inland Fisheries Berlin Germany
- Faculty of Life Sciences and Integrative Research Institute for the Transformation of Human‐Environmental Systems Humboldt‐Universität zu Berlin Berlin Germany
- Division of Integrative Fisheries Management Department of Crop and Animal Sciences Faculty of Life Science Humboldt‐Universität zu Berlin Berlin Germany
| |
Collapse
|
2
|
Harrison HL, Kochalski S, Arlinghaus R, Aas Ø. ‘Do you care about the river?' A critical discourse analysis and lessons for management of social conflict over Atlantic salmon (
Salmo salar
) conservation in the case of voluntary stocking in Wales. PEOPLE AND NATURE 2019. [DOI: 10.1002/pan3.10049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Hannah L. Harrison
- Faculty of Environmental Sciences and Natural Resource Management (MINA) Norwegian University of Life Sciences (NMBU) Ås Norway
- University of Guelph Department of Geography Environment, and Geomatics, and the Arrell Food Institute Guelph Ontario Canada
| | - Sophia Kochalski
- Department of Biology and Ecology of Fishes Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
| | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Division of Integrative Fisheries Management Faculty of Life Sciences and Integrative Research Institute on Transformations of Human‐Environment Systems (IRI THESys) Humboldt‐Universität zu Berlin Berlin Germany
| | - Øystein Aas
- Faculty of Environmental Sciences and Natural Resource Management (MINA) Norwegian University of Life Sciences (NMBU) Ås Norway
- Norwegian Institute for Nature Research (NINA) Lillehammer Norway
| |
Collapse
|
3
|
Johnston FD, Allen MS, Beardmore B, Riepe C, Pagel T, Hühn D, Arlinghaus R. How ecological processes shape the outcomes of stock enhancement and harvest regulations in recreational fisheries. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2018; 28:2033-2054. [PMID: 30144215 DOI: 10.1002/eap.1793] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 07/03/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
Fish stocking and harvest regulations are frequently used to maintain or enhance freshwater recreational fisheries and contribute to fish conservation. However, their relative effectiveness has rarely been systematically evaluated using quantitative models that account for key size- and density-dependent ecological processes and adaptive responses of anglers. We present an integrated model of freshwater recreational fisheries where the population dynamics of two model species affect the effort dynamics of recreational anglers. With this model, we examined how stocking various fish densities and sizes (fry, fingerlings, and adults) performed relative to minimum-length limits using a variety of biological, social, and economic performance measures, while evaluating trade-offs. Four key findings are highlighted. First, stocking often augmented the exploited fish population, but size- and density-dependent bottlenecks limited the number of fry and fingerlings surviving to a catchable size in self-sustaining populations. The greatest enhancement of the catchable fish population occurred when large fish that escaped early bottlenecks were stocked, but this came at the cost of wild-stock replacement, thereby demonstrating a fundamental trade-off between fisheries benefits and conservation. Second, the relative performance of stocking naturally reproducing populations was largely independent of habitat quality and was generally low. Third, stocking was only economically advisable when natural reproduction was impaired or absent, stocking rates were low, and enough anglers benefitted from stocking to offset the associated costs. Fourth, in self-sustaining fish populations, minimum-length limits generally outperformed stocking when judged against a range of biological, social and economic objectives. By contrast, stocking in culture-based fisheries often generated substantial benefits. Collectively, our study demonstrates that size- and density-dependent processes, and broadly the degree of natural recruitment, drive the biological, social, and economic outcomes of popular management actions in recreational fisheries. To evaluate these outcomes and the resulting trade-offs, integrated fisheries-management models that explicitly consider the feedbacks among ecological and social processes are needed.
Collapse
Affiliation(s)
- Fiona D Johnston
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
- Department of Biological Sciences, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Micheal S Allen
- Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, The University of Florida, 7922 NW 71st Street, Gainesville, Florida, 32653-3071, USA
| | - Ben Beardmore
- Wisconsin Department of Natural Resources, Madison, Wisconsin, 53703, USA
| | - Carsten Riepe
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
| | - Thilo Pagel
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
| | - Daniel Hühn
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
| | - Robert Arlinghaus
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587, Berlin, Germany
- Division of Integrative Fisheries Management, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Philippstrasse 13, Haus 7, 10115, Berlin, Germany
| |
Collapse
|
4
|
Pope KL, Pegg MA, Cole NW, Siddons SF, Fedele AD, Harmon BS, Ruskamp RL, Turner DR, Uerling CC. Fishing for ecosystem services. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:408-417. [PMID: 27126088 DOI: 10.1016/j.jenvman.2016.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 03/31/2016] [Accepted: 04/09/2016] [Indexed: 06/05/2023]
Abstract
Ecosystems are commonly exploited and manipulated to maximize certain human benefits. Such changes can degrade systems, leading to cascading negative effects that may be initially undetected, yet ultimately result in a reduction, or complete loss, of certain valuable ecosystem services. Ecosystem-based management is intended to maintain ecosystem quality and minimize the risk of irreversible change to natural assemblages of species and to ecosystem processes while obtaining and maintaining long-term socioeconomic benefits. We discuss policy decisions in fishery management related to commonly manipulated environments with a focus on influences to ecosystem services. By focusing on broader scales, managing for ecosystem services, and taking a more proactive approach, we expect sustainable, quality fisheries that are resilient to future disturbances. To that end, we contend that: (1) management always involves tradeoffs; (2) explicit management of fisheries for ecosystem services could facilitate a transition from reactive to proactive management; and (3) adaptive co-management is a process that could enhance management for ecosystem services. We propose adaptive co-management with an ecosystem service framework where actions are implemented within ecosystem boundaries, rather than political boundaries, through strong interjurisdictional relationships.
Collapse
Affiliation(s)
- Kevin L Pope
- U.S. Geological Survey-Nebraska Cooperative Fish and Wildlife Research Unit and School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Mark A Pegg
- School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Nicholas W Cole
- Nebraska Cooperative Fish and Wildlife Research Unit and School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Stephen F Siddons
- School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Alexis D Fedele
- Nebraska Cooperative Fish and Wildlife Research Unit and School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Brian S Harmon
- Nebraska Cooperative Fish and Wildlife Research Unit and School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Ryan L Ruskamp
- Nebraska Game and Parks Commission, Fisheries Division, Lincoln, NE 68503, USA.
| | - Dylan R Turner
- School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| | - Caleb C Uerling
- School of Natural Resources, University of Nebraska, Lincoln, NE 68583, USA.
| |
Collapse
|
5
|
Lorenzen K. Understanding and managing enhancements: why fisheries scientists should care. JOURNAL OF FISH BIOLOGY 2014; 85:1807-29. [PMID: 25469948 DOI: 10.1111/jfb.12573] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 10/03/2014] [Indexed: 05/07/2023]
Abstract
Fisheries enhancements are a set of management approaches involving the use of aquaculture technologies to enhance or restore fisheries in natural ecosystems. Enhancements are widely used in inland and coastal fisheries, but have received limited attention from fisheries scientists. This paper sets out 10 reasons why fisheries scientists should care about understanding and managing enhancements. (1) Enhancements happen, driven mostly by resource users and managers rather than scientists. (2) Enhancements create complex fisheries systems that encompass and integrate everything fisheries stakeholders can practically manage. (3) Enhancements emerge in fisheries where the scope for technical and governance control is high, and they synergistically reinforce both. (4) Successful enhancements expand management options and achievable outcomes. (5) Many enhancements fail or do ecological harm but persist regardless. (6) Effective science engagement is crucial to developing beneficial enhancements and preventing harmful ones. (7) Good scientific guidance is available to aid development or reform of enhancements but is not widely applied. (8) Enhancement research advances, integrates and unifies the fisheries sciences. (9) Enhancements provide unique opportunities for learning about natural fish populations and fisheries. (10) Needs, opportunities and incentives for enhancements are bound to increase.
Collapse
Affiliation(s)
- K Lorenzen
- Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, 7922 NW 71st St., Gainesville, FL, 32653, U.S.A
| |
Collapse
|