1
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Canty SWJ, Nowakowski AJ, Cox CE, Valdivia A, Holstein DM, Limer B, Lefcheck JS, Craig N, Drysdale I, Giro A, Soto M, McField M. Interplay of management and environmental drivers shifts size structure of reef fish communities. GLOBAL CHANGE BIOLOGY 2024; 30:e17257. [PMID: 38572701 DOI: 10.1111/gcb.17257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 04/05/2024]
Abstract
Countries are expanding marine protected area (MPA) networks to mitigate fisheries declines and support marine biodiversity. However, MPA impact evaluations typically assess total fish biomass. Here, we examine how fish biomass disaggregated by adult and juvenile life stages responds to environmental drivers, including sea surface temperature (SST) anomalies and human footprint, and multiple management types at 139 reef sites in the Mesoamerican Reef (MAR) region. We found that total fish biomass generally appears stable across the region from 2006 to 2018, with limited rebuilding of fish stocks in MPAs. However, the metric of total fish biomass masked changes in fish community structure, with lower adult than juvenile fish biomass at northern sites, and adult:juvenile ratios closer to 1:1 at southern sites. These shifts were associated with different responses of juvenile and adult fish to environmental drivers and management. Juvenile fish biomass increased at sites with high larval connectivity and coral cover, whereas adult fish biomass decreased at sites with greater human footprint and SST anomalies. Adult fish biomass decreased primarily in Honduran general use zones, which suggests insufficient protection for adult fish in the southern MAR. There was a north-south gradient in management and environmental drivers, with lower coverage of fully protected areas and higher SST anomalies and coastal development in the south that together may undermine the maintenance of adult fish biomass in the southern MAR. Accounting for the interplay between environmental drivers and management in the design of MPAs is critical for increasing fish biomass across life history stages.
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Affiliation(s)
- Steven W J Canty
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
| | - A Justin Nowakowski
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
- Moore Center for Science, Conservation International, Arlington, Virginia, USA
| | | | - Abel Valdivia
- World Wildlife Fund, Washington, District of Columbia, USA
| | - Daniel M Holstein
- Department of Oceanography and Coastal Studies, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Benjamin Limer
- Department of Oceanography and Coastal Studies, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Jonathan S Lefcheck
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
- University of Maryland Center for Environmental Science, Cambridge, Maryland, USA
| | - Nicole Craig
- Healthy Reefs Initiative, Fort Lauderdale, Florida, USA
| | - Ian Drysdale
- Healthy Reefs Initiative, Fort Lauderdale, Florida, USA
| | - Ana Giro
- Healthy Reefs Initiative, Fort Lauderdale, Florida, USA
| | - Mélina Soto
- Healthy Reefs Initiative, Fort Lauderdale, Florida, USA
| | - Melanie McField
- Healthy Reefs Initiative, Fort Lauderdale, Florida, USA
- Smithsonian Marine Station, Fort Pierce, Florida, USA
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2
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Friedland KD, Ganley LC, Dimarchopoulou D, Gaichas S, Morse RE, Jordaan A. Change in body size in a rapidly warming marine ecosystem: Consequences of tropicalization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166117. [PMID: 37572904 DOI: 10.1016/j.scitotenv.2023.166117] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/04/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Climate change is profoundly affecting the physical environment and biota of the Northeast U.S. Continental Shelf ecosystem. To understand adaptations to climate change, in particular warming temperatures, we used bottom trawl survey data to describe the size of individual fish and macroinvertebrates. Using species distribution models to estimate abundance and biomass, we determined body size in weight for all modeled species. We demonstrate a tendency for increased abundance and biomass and a concomitant decline in body size over time. An analysis of length frequency data supports this assertion. There was no trend in the combined anthropogenic removals from the ecosystem, i.e. catches, suggesting a limited role of fisheries in influencing these changes. The changes in the fish and macroinvertebrate communities are consistent with the hypothesis of a tropicalization of this ecosystem, where the ecosystem experiences a change in diversity, abundance, biomass, and the size of individuals consistent with lower latitudes. The changes in how productivity is expressed in the ecosystem factors into how human populations relate to it; in a practical sense, change in body size will likely influence the strategies and efficiencies of harvest procedures and the industries built to support them.
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Affiliation(s)
| | - Laura C Ganley
- Anderson Cabot Center for Ocean Life, New England Aquarium, Boston, MA, 02110, USA
| | - Donna Dimarchopoulou
- Biology Department, Dalhousie University, 1355 Oxford St, PO Box 15000, Halifax, NS, B3H4R2, Canada; Biology Department, Woods Hole Oceanographic Institution, 360 Woods Hole Road, Woods Hole, MA, 02540, USA
| | - Sarah Gaichas
- Northeast Fisheries Science Center, 166 Water St, Woods Hole, MA, 02543, USA
| | - Ryan E Morse
- Northeast Fisheries Science Center, Narragansett, RI, 02882, USA; CASE Consultants International, 1 Haywood St Suite 451, Asheville, NC, 28801, USA
| | - Adrian Jordaan
- Gloucester Marine Station and Department of Environmental Conservation, University of Massachusetts Amherst, Holdsworth Hall, 160 Holdsworth Way, Amherst, MA, 01003, USA
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3
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Iacarella JC, Burke L, Clyde G, Wicks A, Clavelle T, Dunham A, Rubidge E, Woods P. Monitoring temporal and spatial trends of illegal and legal fishing in marine conservation areas across Canada's three oceans. CONSERVATION SCIENCE AND PRACTICE 2023. [DOI: 10.1111/csp2.12919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
Affiliation(s)
- Josephine C. Iacarella
- Fisheries and Oceans Canada, Cultus Lake Labs Cultus Lake British Columbia V2R 5B6 Canada
| | - Lily Burke
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Georgia Clyde
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Adam Wicks
- Ebb and Flow Analytics 199 Petworth Drive Victoria British Columbia V9E 1J4 Canada
| | - Tyler Clavelle
- Global Fishing Watch 1025 Connecticut Avenue, NW Suite 200 Washington DC 20036 USA
| | - Anya Dunham
- Fisheries and Oceans Canada Pacific Biological Station Nanaimo British Columbia V9T 6N7 Canada
| | - Emily Rubidge
- Fisheries and Oceans Canada Institute of Ocean Sciences Sidney British Columbia V8L 4B2 Canada
| | - Paul Woods
- Global Fishing Watch 1025 Connecticut Avenue, NW Suite 200 Washington DC 20036 USA
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4
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Kraufvelin P, Bergström L, Sundqvist F, Ulmestrand M, Wennhage H, Wikström A, Bergström U. Rapid re-establishment of top-down control at a no-take artificial reef. AMBIO 2023; 52:556-570. [PMID: 36324024 PMCID: PMC9849640 DOI: 10.1007/s13280-022-01799-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/09/2022] [Accepted: 09/21/2022] [Indexed: 05/26/2023]
Abstract
Establishment of artificial reefs and no-take areas are management measures available for restoring deteriorated marine ecosystems, compensating for habitat loss and strengthening harvested populations. Following the establishment of no-take artificial reefs in western Sweden to compensate for hard bottoms lost to a shipping lane, we detected rapid positive effects on crustaceans and demersal fish compared to fished reference areas. The relative abundance and size structure of European lobster (Homarus gammarus) increased strongly in the no-take area indicating more than doubled and tripled egg production in 5 and 10 years, respectively. For benthic fish and crustacean communities, the abundances of gadoids and wrasses increased and the abundances of small decapod crustaceans decreased in the no-take area, likely indicating cascading effects of increased predation. The study demonstrates that relatively small no-take areas, enhanced by artificial reefs, can rapidly invigorate populations of lobster and fish that in turn may re-initiate local top-down control.
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Affiliation(s)
- Patrik Kraufvelin
- Department of Aquatic Resources, Swedish University of Agricultural Sciences (SLU), Skolgatan 6, 742 42 Öregrund, Sweden
- Åland University of Applied Sciences, PB 1010, AX-22111 Mariehamn, Åland, Finland
| | - Lena Bergström
- Department of Aquatic Resources, Swedish University of Agricultural Sciences (SLU), Skolgatan 6, 742 42 Öregrund, Sweden
| | - Frida Sundqvist
- Department of Aquatic Resources, Swedish University of Agricultural Sciences (SLU), Skolgatan 6, 742 42 Öregrund, Sweden
- Department of Aquatic Resources, Institute of Coastal Research, Swedish University of Agricultural Sciences, Yttre Skällåkra 6, 432 65 Väröbacka, Sweden
| | - Mats Ulmestrand
- Department of Aquatic Resources, Havsfiskelaboratoriet, Swedish University of Agricultural Sciences, Turistgatan 5, Box 4, 453 30 Lysekil, Sweden
| | - Håkan Wennhage
- Department of Aquatic Resources, Havsfiskelaboratoriet, Swedish University of Agricultural Sciences, Turistgatan 5, Box 4, 453 30 Lysekil, Sweden
| | - Andreas Wikström
- Department of Aquatic Resources, Havsfiskelaboratoriet, Swedish University of Agricultural Sciences, Turistgatan 5, Box 4, 453 30 Lysekil, Sweden
| | - Ulf Bergström
- Department of Aquatic Resources, Swedish University of Agricultural Sciences (SLU), Skolgatan 6, 742 42 Öregrund, Sweden
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5
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Chiarini M, Guicciardi S, Angelini S, Tuck ID, Grilli F, Penna P, Domenichetti F, Canduci G, Belardinelli A, Santojanni A, Arneri E, Milone N, Medvešek D, Isajlović I, Vrgoč N, Martinelli M. Accounting for environmental and fishery management factors when standardizing CPUE data from a scientific survey: A case study for Nephrops norvegicus in the Pomo Pits area (Central Adriatic Sea). PLoS One 2022; 17:e0270703. [PMID: 35834483 PMCID: PMC9282463 DOI: 10.1371/journal.pone.0270703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 06/15/2022] [Indexed: 11/19/2022] Open
Abstract
Abundance and distribution of commercial marine resources are influenced by environmental variables, which together with fishery patterns may also influence their catchability. However, Catch Per Unit Effort (CPUE) can be standardized in order to remove most of the variability not directly attributable to fish abundance. In the present study, Generalized Additive Models (GAMs) were used to investigate the effect of some environmental and fishery covariates on the spatial distribution and abundance of the Norway lobster Nephrops norvegicus within the Pomo/Jabuka Pits (Central Adriatic Sea) and to include those that resulted significant in a standardization process. N. norvegicus is a commercially important demersal crustacean, altering its catchability over the 24-h cycle and seasons according to its burrowing behavior. A historically exploited fishing ground for this species, since 2015 subject to specific fisheries management measures, is represented by the meso-Adriatic depressions, which are also characterized by particular oceanographic conditions. Both the species behaviour and the features of this study area influence the dynamics of the population offering a challenging case study for a standardization modelling approach. Environmental and catch data were obtained during scientific trawl surveys properly designed to catch N. norvegicus, thus improving the quality of the model input data. Standardization of CPUE from 2 surveys from 2012 to 2019 was conducted building two GAMs for both biomass and density indices. Bathymetry, fishing pressure, dissolved oxygen and salinity proved to be significant drivers influencing catch distribution. After cross validations, the tuned models were then used to predict new indices for the study area and the two survey series by means of informed spatial grids, composed by constant surface cells, to each of which are associated average values of environmental parameters and specific levels of fishing pressure, depending on the management measures in place. The predictions can be used to better describe the structure and the spatio-temporal distribution of the population providing valuable information to evaluate the status of such an important marine resource.
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Affiliation(s)
- Matteo Chiarini
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
- Department of Biological, Geological and Environmental Sciences, University of Bologna (UNIBO), Bologna, Italy
- * E-mail:
| | - Stefano Guicciardi
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Silvia Angelini
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, Fano, Italy
| | - Ian D. Tuck
- National Institute of Water and Atmosphere (NIWA), Auckland, New Zealand
| | - Federica Grilli
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Pierluigi Penna
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Filippo Domenichetti
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Giovanni Canduci
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Andrea Belardinelli
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Alberto Santojanni
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | - Enrico Arneri
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
| | | | - Damir Medvešek
- Institute of Oceanography and Fisheries (IOF), Split, Croatia
| | - Igor Isajlović
- Institute of Oceanography and Fisheries (IOF), Split, Croatia
| | - Nedo Vrgoč
- Institute of Oceanography and Fisheries (IOF), Split, Croatia
| | - Michela Martinelli
- National Research Council–Institute of Marine Biological Resources and Biotechnologies (CNR IRBIM), Ancona, Italy
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6
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Cope S, Tougher B, Morten J, Pukini C, Zetterlind V. Coastal radar as a tool for continuous and fine-scale monitoring of vessel activities of interest in the vicinity of marine protected areas. PLoS One 2022; 17:e0269490. [PMID: 35839164 PMCID: PMC9286260 DOI: 10.1371/journal.pone.0269490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 05/22/2022] [Indexed: 11/30/2022] Open
Abstract
Marine protected areas (MPAs) are widely utilized for conservation of the world’s marine resources. Yet, compliance with MPA regulations remains difficult to measure because of limits to human resources and a lack of affordable technologies to automate monitoring over time. The Marine Monitor, an autonomous vessel monitoring, recording, and reporting system leveraging commercial off-the-shelf X-band marine radar to detect and track vessels, was used to monitor five nearshore California MPAs simultaneously and continuously to identify and compare site-specific use patterns over one year. Vessel tracks were classified into two movement patterns to capture likely fishing activity, “focal” or “linear”, that corresponded with local targeted species. Some illegal fishing potentially occurred at all sites (7–17% of tracks depending on site) most frequently on weekends and at mid-day, but the majority of activity occurred just outside the MPAs and in the near vicinity suggesting both a high level of compliance with regulations and awareness of MPA boundaries. Time spent engaged in potential fishing activity compared to track counts suggests that unique vessels may spend more time fishing inside area boundaries at some sites than others. The spatial distribution of activity shows distinct concentrations near MPA boundaries at all sites which strongly suggests vessels purposefully target the narrow area at the MPA boundary or “fish the line”, a potential acknowledgement of successful spillover. This activity increased significantly during some local fishing seasons. Concentration of activity at MPA boundaries highlights the importance of continuous monitoring at a high spatial and temporal resolution. Reporting of vessel behavior at a fine-scale using radar can help resource managers target enforcement efforts and understand human use patterns near coastal MPAs.
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Affiliation(s)
- Samantha Cope
- ProtectedSeas, Anthropocene Institute, Palo Alto, California, United States of America
- * E-mail:
| | - Brendan Tougher
- ProtectedSeas, Anthropocene Institute, Palo Alto, California, United States of America
| | - Jessica Morten
- Channel Islands National Marine Sanctuary, Santa Barbara, California, United States of America
- California Marine Sanctuary Foundation, Monterey, California, United States of America
| | - Cory Pukini
- Waitt Institute, La Jolla, California, United States of America
| | - Virgil Zetterlind
- ProtectedSeas, Anthropocene Institute, Palo Alto, California, United States of America
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7
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Kleiven AR, Espeland SH, Stiansen S, Ono K, Zimmermann F, Olsen EM. Technological creep masks continued decline in a lobster (Homarus gammarus) fishery over a century. Sci Rep 2022; 12:3318. [PMID: 35228599 PMCID: PMC8885706 DOI: 10.1038/s41598-022-07293-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 02/09/2022] [Indexed: 11/22/2022] Open
Abstract
Fishery-dependent data are frequently used to inform management decisions. However, inferences about stock development based on commercial data such as Catch-Per-Unit-Effort (CPUE) can be severely biased due to a phenomenon known as technological creep, where fishing technology improves over time. Here we show how trap improvement over nine decades has driven technological creep in a European lobster (Homarus gammarus) fishery. We combined fishing data, experimental fishing with contemporary and older trap types, and information on depletion effects during fishing seasons. The resulting standardized CPUE time series indicates a 92% decline in lobster abundance between 1928 and 2019 compared to 70% if technological creep is not corrected for. Differences are most pronounced within the last 40 years when the most substantial shift in gear technology occurred: an uncorrected CPUE index suggests an 8% increase in lobster abundance during this period, while the corrected CPUE index declined by 57%. We conclude that technological creep has masked a continuous stock decline, particularly in recent decades and largely driven by the shift from one- to two-chambered traps, as well as the ability of newer trap designs to capture larger lobsters. Our study confirms the importance of adequate standardization, including technological development, when using fishery dependent CPUE for monitoring and management of data-limited fisheries.
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8
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Fishing activity before closure, during closure, and after reopening of the Northeast Canyons and Seamounts Marine National Monument. Sci Rep 2022; 12:917. [PMID: 35042852 PMCID: PMC8766525 DOI: 10.1038/s41598-021-03394-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 11/22/2021] [Indexed: 11/09/2022] Open
Abstract
Evaluation of the economic impacts of marine protected areas is hampered by the fact that it is impossible to observe what would have happened if the protected area had never been closed to fishing (the counterfactual). Catch reports and vessel tracks are used to perform an analysis of the potential negative economic impacts of establishing the Northeast Canyons and Seamounts Marine National Monument (located off the east coast of the United States of America) on three commercially important fisheries that were identified as having potential to be harmed. I conclude that there was little to no negative impact on any of the fisheries. I also test for, but find no evidence of, a Blue Paradox effect. Due to political factors largely unrelated to fisheries status, the protected area was reopened to commercial fishing on June 5th, 2020. I use this event, which was reversed sixteen months later, to test whether there were any economic benefits from reopening. I do not observe an increase in catch, a reduction in distance traveled, or an increase in relative fishing effort inside the protected area (compared to historical trends), consistent with the post-closure findings.
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9
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A meta-analysis reveals edge effects within marine protected areas. Nat Ecol Evol 2021; 5:1301-1308. [PMID: 34226700 DOI: 10.1038/s41559-021-01502-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 05/19/2021] [Indexed: 02/06/2023]
Abstract
Marine protected areas (MPAs) play a leading role in conserving and restoring marine environments. MPAs can benefit both marine populations within their boundaries and external populations owing to a net export of organisms (spillover). However, little is known about variation in performance within MPAs. For example, edge effects may degrade populations within MPAs close to their boundaries. Here we synthesize empirical estimates of 72 taxa of fish and invertebrates to explore spatial patterns across the borders of 27 no-take MPAs. We show that there is a prominent and consistent edge effect that extends approximately 1 km within the MPA, in which population sizes on the border are 60% smaller than those in the core area. Our analysis of cross-boundary population trends suggests that, globally, the smallest 64% of no-take MPAs (those of less than 10 km2 in area) may hold only about half (45-56%) of the population size that is implied by their area. MPAs with buffer zones did not display edge effects, suggesting that extending no-take areas beyond the target habitats and managing fishing activities around MPA borders are critical for boosting MPA performance.
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10
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Recent expansion of marine protected areas matches with home range of grey reef sharks. Sci Rep 2021; 11:14221. [PMID: 34244536 PMCID: PMC8270914 DOI: 10.1038/s41598-021-93426-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 06/17/2021] [Indexed: 02/06/2023] Open
Abstract
Dramatic declines in reef shark populations have been documented worldwide in response to human activities. Marine Protected Areas (MPAs) offer a useful mechanism to protect these species and their roles in coral reef ecosystems. The effectiveness of MPAs notably relies on compliance together with sufficient size to encompass animal home range. Here, we measured home range of 147 grey reef sharks, Carcharhinus amblyrhynchos, using acoustic telemetry in New Caledonia. The distribution of home range was then compared to local MPA sizes. We report a home range of 12 km2 of reef for the species with strong differences between adult males (21 km2), adult females (4.4 km2) and juveniles (6.2 km2 for males, 2.7 km2 for females). Whereas local historic MPA size seemed adequate to protect reef shark home range in general, these were clearly too small when considering adult males only, which is consistent with the reported failure of MPAs to protect sharks in New Caledonia. Fortunately, the recent implementation of several orders of magnitude larger MPAs in New Caledonia and abroad show that recent Indo-Pacific MPAs are now sufficiently large to protect the home ranges of this species, including males, across its geographical range. However, protection efforts are concentrated in a few regions and cannot provide adequate protection at a global scale.
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11
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LaScala‐Gruenewald DE, Grace RV, Haggitt TR, Hanns BJ, Kelly S, MacDiarmid A, Shears NT. Small marine reserves do not provide a safeguard against overfishing. CONSERVATION SCIENCE AND PRACTICE 2021. [DOI: 10.1111/csp2.362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
| | - Roger V. Grace
- Leigh Marine Laboratory University of Auckland Leigh New Zealand
| | - Tim R. Haggitt
- Leigh Marine Laboratory University of Auckland Leigh New Zealand
| | | | - Shane Kelly
- Leigh Marine Laboratory University of Auckland Leigh New Zealand
| | - Alison MacDiarmid
- National Institute of Water and Atmospheric Research Wellington New Zealand
| | - Nick T. Shears
- Leigh Marine Laboratory University of Auckland Leigh New Zealand
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12
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Lenihan HS, Gallagher JP, Peters JR, Stier AC, Hofmeister JKK, Reed DC. Evidence that spillover from Marine Protected Areas benefits the spiny lobster (Panulirus interruptus) fishery in southern California. Sci Rep 2021; 11:2663. [PMID: 33514853 PMCID: PMC7846765 DOI: 10.1038/s41598-021-82371-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 01/14/2021] [Indexed: 01/30/2023] Open
Abstract
Marine Protected Areas (MPAs) are designed to enhance biodiversity and ecosystem services. Some MPAs are also established to benefit fisheries through increased egg and larval production, or the spillover of mobile juveniles and adults. Whether spillover influences fishery landings depend on the population status and movement patterns of target species both inside and outside of MPAs, as well as the status of the fishery and behavior of the fleet. We tested whether an increase in the lobster population inside two newly established MPAs influenced local catch, fishing effort, and catch-per-unit-effort (CPUE) within the sustainable California spiny lobster fishery. We found greater build-up of lobsters within MPAs relative to unprotected areas, and greater increases in fishing effort and total lobster catch, but not CPUE, in fishing zones containing MPAs vs. those without MPAs. Our results show that a 35% reduction in fishing area resulting from MPA designation was compensated for by a 225% increase in total catch after 6-years, thus indicating at a local scale that the trade-off of fishing ground for no-fishing zones benefitted the fishery.
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Affiliation(s)
- Hunter S. Lenihan
- grid.133342.40000 0004 1936 9676Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, CA 93116 USA
| | - Jordan P. Gallagher
- grid.133342.40000 0004 1936 9676Department of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93116 USA
| | - Joseph R. Peters
- grid.133342.40000 0004 1936 9676Department of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93116 USA
| | - Adrian C. Stier
- grid.133342.40000 0004 1936 9676Department of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93116 USA ,grid.133342.40000 0004 1936 9676Marine Science Institute, University of California Santa Barbara, Santa Barbara, CA 93116 USA
| | | | - Daniel C. Reed
- grid.133342.40000 0004 1936 9676Marine Science Institute, University of California Santa Barbara, Santa Barbara, CA 93116 USA
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13
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Pavičić M, Žužul I, Matić-Skoko S, Triantafyllidis A, Grati F, Durieux EDH, Celić I, Šegvić-Bubić T. Population Genetic Structure and Connectivity of the European Lobster Homarus gammarus in the Adriatic and Mediterranean Seas. Front Genet 2020; 11:576023. [PMID: 33365046 PMCID: PMC7750201 DOI: 10.3389/fgene.2020.576023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 11/11/2020] [Indexed: 11/13/2022] Open
Abstract
Highly selective fishing has the potential to permanently change the characteristics within a population and could drive the decline of genetic diversity. European lobster is an intensively fished crustacean species in the Adriatic Sea which reaches high market value. Since knowledge of population structure and dynamics is important for effective fisheries management, in this study, we used 14 neutral microsatellites loci and partial mitochondrial COI region sequencing to explore population connectivity and genetic structure by comparing samples from the Adriatic Sea and the adjacent basins of the Mediterranean Sea. The obtained results suggest that neutral genetic diversity has not been significantly affected by decrease in population size due to overfishing, habitat degradation and other anthropogenic activities. Global genetic differentiation across all populations was low (F ST = 0.0062). Populations from the Adriatic Sea were panmictic, while genetic differentiation was found among populations from different Mediterranean basins. Observed gene flow for European lobster suggest that populations in the north eastern Adriatic act as a source for surrounding areas, emphasizing the need to protect these populations by establishing interconnected MPAs that will be beneficial for both fisheries and conservation management.
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Affiliation(s)
- Mišo Pavičić
- Institute of Oceanography and Fisheries, Split, Croatia
| | - Iva Žužul
- Institute of Oceanography and Fisheries, Split, Croatia
| | | | | | - Fabio Grati
- Institute for Biological Resources and Marine Biotechnologies (IRBIM), National Research Council (CNR), Ancona, Italy
| | - Eric D. H. Durieux
- UMR CNRS 6134 Sciences Pour l’Environnement, Università di Corsica Pasquale Paoli, Corte, France
- UMS CNRS 3514 STELLA MARE, Università di Corsica Pasquale Paoli, Biguglia, France
| | - Igor Celić
- National Institute of Oceanography and Applied Geophysics – OGS, Trieste, Italy
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Anthropogenic impacts in the nearshore fish community of the Yucatan Coastal Corridor. A comparison of protected and unprotected areas. J Nat Conserv 2019. [DOI: 10.1016/j.jnc.2019.125721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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