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Borges FO, Sampaio E, Santos CP, Rosa R. Climate-Change Impacts on Cephalopods: A Meta-Analysis. Integr Comp Biol 2023; 63:1240-1265. [PMID: 37468442 DOI: 10.1093/icb/icad102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023] Open
Abstract
Aside from being one of the most fascinating groups of marine organisms, cephalopods play a major role in marine food webs, both as predators and as prey, while representing key living economic assets, namely for artisanal and subsistence fisheries worldwide. Recent research suggests that cephalopods are benefitting from ongoing environmental changes and the overfishing of certain fish stocks (i.e., of their predators and/or competitors), putting forward the hypothesis that this group may be one of the few "winners" of climate change. While many meta-analyses have demonstrated negative and overwhelming consequences of ocean warming (OW), acidification (OA), and their combination for a variety of marine taxa, such a comprehensive analysis is lacking for cephalopod molluscs. In this context, the existing literature was surveyed for peer-reviewed articles featuring the sustained (≥24 h) and controlled exposure of cephalopod species (Cephalopoda class) to these factors, applying a comparative framework of mixed-model meta-analyses (784 control-treatment comparisons, from 47 suitable articles). Impacts on a wide set of biological categories at the individual level (e.g., survival, metabolism, behavior, cell stress, growth) were evaluated and contrasted across different ecological attributes (i.e., taxonomic lineages, climates, and ontogenetic stages). Contrary to what is commonly assumed, OW arises as a clear threat to cephalopods, while OA exhibited more restricted impacts. In fact, OW impacts were ubiquitous across different stages of ontogeny, taxonomical lineages (i.e., octopuses, squids, and cuttlefish). These results challenge the assumption that cephalopods benefit from novel ocean conditions, revealing an overarching negative impact of OW in this group. Importantly, we also identify lingering literature gaps, showing that most studies to date focus on OW and early life stages of mainly temperate species. Our results raise the need to consolidate experimental efforts in a wider variety of taxa, climate regions, life stages, and other key environmental stressors, such as deoxygenation and hypoxia, to better understand how cephalopods will cope with future climate change.
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Affiliation(s)
- Francisco O Borges
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
| | - Eduardo Sampaio
- Department of Collective Behaviour, Max Planck Institute of Animal Behavior, Universitatsstrasse 10, Konstanz 78464, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz 78464, Germany
- Department of Biology, University of Konstanz, Universitatsstrasse 10, Konstanz 78464, Germany
| | - Catarina P Santos
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
- Environmental Economics Knowledge Center, Nova School of Business and Economics, New University of Lisbon, Carcavelos 2775-405, Portugal
- Sphyrna Association, Boa Vista Island, Sal Rei, Cape Verde
| | - Rui Rosa
- MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Cascais, Lisboa 1749-016, Portugal
- Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisboa1 749-016, Portugal
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Smith M, Chagaris D, Paperno R, Markwith S. Tropical estuarine ecosystem change under the interacting influences of future climate and ecosystem restoration. GLOBAL CHANGE BIOLOGY 2023; 29:5850-5865. [PMID: 37452446 DOI: 10.1111/gcb.16868] [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: 12/08/2022] [Accepted: 06/09/2023] [Indexed: 07/18/2023]
Abstract
One of the largest restoration programs in the world, the Comprehensive Everglades Restoration Plan (CERP) aims to restore freshwater inputs to Everglades wetlands and the Florida Bay estuary. This study predicted how the Florida Bay ecosystem may respond to hydrological restoration from CERP within the context of contemporary projected impacts of sea-level rise (SLR) and increased future temperatures. A spatial-temporal dynamic model (Ecospace) was used to develop a spatiotemporal food web model incorporating environmental drivers of salinity, salinity variation, temperature, depth, distance to mangrove, and seagrass abundance and was used to predict responses of biomass, fisheries catch, and ecosystem resilience between current and future conditions. Changes in biomass between the current and future scenario suggest a suite of winners and losers, with many estuarine species increasing in both total biomass and spatial distribution. Notable biomass increases were predicted for important forage species, including bay anchovy (+32%), hardhead halfbeak (+19%), and pinfish (+31%), while decreases were predicted in mullet (-88%), clupeids (-55%), hardhead silverside (-15%), mojarras (-117%), and Portunid crabs (-16%). Increases in sportfish biomass included the angler-preferred spotted seatrout (+9%), red drum (+10%), and gray snapper (+8%), while decreases included sheepshead (-40%), Atlantic tarpon (-73%), and common snook (-507%). Ecosystem resilience and fisheries catch of angler-preferred species were predicted to improve in the future scenario in total, although a localized decline in resilience predicted for the Central Region may warrant further attention. Our results suggest the Florida Bay ecosystem is likely to achieve restoration benefits in spite of, and in some cases facilitated by, the projected future impacts from climate change due to the system's shallow depth and detrital dominance. The incorporation of climate impacts into long-term restoration planning using ecosystem modeling in similar systems facing unknown futures of SLR, warming seas, and shifting species distributions is recommended.
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Affiliation(s)
- Mason Smith
- Department of Geosciences, Florida Atlantic University, Boca Raton, Florida, USA
| | - David Chagaris
- IFAS Nature Coast Biological Station, University of Florida, Gainesville, Florida, USA
| | - Richard Paperno
- Indian River Field Laboratory, Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, Melbourne, Florida, USA
| | - Scott Markwith
- Department of Geosciences, Florida Atlantic University, Boca Raton, Florida, USA
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Zheng J, Brose U, Gravel D, Gauzens B, Luo M, Wang S. Asymmetric foraging lowers the trophic level and omnivory in natural food webs. J Anim Ecol 2021; 90:1444-1454. [PMID: 33666227 DOI: 10.1111/1365-2656.13464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 02/22/2021] [Indexed: 11/29/2022]
Abstract
Food webs capture the trophic relationships and energy fluxes between species, which has fundamental impacts on ecosystem functioning and stability. Within a food web, the energy flux distribution between a predator and its prey species is shaped by food quantity-quality trade-offs and the contiguity of foraging. But the distribution of energy fluxes among prey species as well as its drivers and implications remain unclear. Here we used 157 aquatic food webs, which contain explicit energy flux information, to examine whether a predator's foraging is asymmetric and biased towards lower or higher trophic levels, and how these patterns may change with trophic level. We also evaluate how traditional topology-based approaches may over- or under-estimate a predator's trophic level and omnivory by ignoring the asymmetric foraging patterns. Our results demonstrated the prevalence of asymmetric foraging in natural aquatic food webs. Although predators prefer prey at higher trophic levels with potentially higher food quality, they obtain their energy mostly from lower trophic levels with a higher food quantity. Both tendencies, that is, stronger feeding preference for prey at higher trophic levels and stronger energetic reliance on prey at lower trophic levels are alleviated for predators at higher trophic levels. The asymmetric foraging lowers trophic levels and omnivory at both species and food web levels, compared to estimates from traditional topology-based approaches. Such overestimations by topology-based approaches are most pronounced for predators at lower trophic levels and communities with higher number of trophic species. Our study highlights the importance of energy flux information in understanding the foraging behaviour of predators as well as the structural complexity of natural food webs. The increasing availability of flux-based food web data will thus provide new opportunities to reconcile food web structure, functioning and stability.
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Affiliation(s)
- Junjie Zheng
- Institute of Ecology, College of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China
| | - Ulrich Brose
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany.,Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
| | - Dominique Gravel
- Département de Biologie, Universite de Sherbrooke, Sherbrooke, QC, Canada
| | - Benoit Gauzens
- EcoNetLab, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany.,Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
| | - Mingyu Luo
- Institute of Ecology, College of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China
| | - Shaopeng Wang
- Institute of Ecology, College of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China
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Schickele A, Francour P, Raybaud V. European cephalopods distribution under climate-change scenarios. Sci Rep 2021; 11:3930. [PMID: 33594145 PMCID: PMC7886854 DOI: 10.1038/s41598-021-83457-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 02/01/2021] [Indexed: 01/31/2023] Open
Abstract
In a context of increasing anthropogenic pressure, projecting species potential distributional shifts is of major importance for the sustainable exploitation of marine species. Despite their major economical (i.e. important fisheries) and ecological (i.e. central position in food-webs) importance, cephalopods literature rarely addresses an explicit understanding of their current distribution and the potential effect that climate change may induce in the following decades. In this study, we focus on three largely harvested and common cephalopod species in Europe: Octopus vulgaris, Sepia officinalis and Loligo vulgaris. Using a recently improved species ensemble modelling framework coupled with five atmosphere-ocean general circulation models, we modelled their contemporary and potential future distributional range over the twenty-first century. Independently of global warming scenarios, we observed a decreasing in the suitability of environmental conditions in the Mediterranean Sea and the Bay of Biscay. Conversely, we projected a rapidly increasing environmental suitability in the North, Norwegian and Baltic Seas for all species. This study is a first broad scale assessment and identification of the geographical areas, fisheries and ecosystems impacted by climate-induced changes in cephalopods distributional range.
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Affiliation(s)
- Alexandre Schickele
- grid.460782.f0000 0004 4910 6551Université Côte d’Azur, CNRS, UMR 7035 ECOSEAS, Nice, France
| | - Patrice Francour
- grid.460782.f0000 0004 4910 6551Université Côte d’Azur, CNRS, UMR 7035 ECOSEAS, Nice, France
| | - Virginie Raybaud
- grid.460782.f0000 0004 4910 6551Université Côte d’Azur, CNRS, UMR 7035 ECOSEAS, Nice, France
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Emergy evaluation of benthic ecosystems influenced by upwelling in northern Chile: Contributions of the ecosystems to the regional economy. Ecol Modell 2017. [DOI: 10.1016/j.ecolmodel.2017.05.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pezy JP, Raoux A, Marmin S, Balay P, Niquil N, Dauvin JC. Before-After analysis of the trophic network of an experimental dumping site in the eastern part of the Bay of Seine (English Channel). MARINE POLLUTION BULLETIN 2017; 118:101-111. [PMID: 28233526 DOI: 10.1016/j.marpolbul.2017.02.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
An experimental study was conducted to assess the physical and biological impacts of muddy fine sand dredged material dumped on a medium sand site Machu offshore the Seine Estuary. Complementary trophic web modelling tools were applied to the Machu ecosystem to analyse the effects of dumping operations. Results show that, after the dumping operations, the biomass of fish increased while invertebrate biomass remained relatively stable through time. Nevertheless, the biomasses of benthic invertebrates, omnivores/scavengers and predators showed some increases, while non-selective deposit feeders and filter feeders decreased. At the ecosystem level, results show that the total ecosystem activity, the ascendency and the overall omnivorous character of the food-web structure increased after dumping operations, whereas recycling subsequently decreased. Finally, the fine and medium sand habitat offshore from the Seine estuary, which undergoes regular natural physical perturbations, shows a high resilience after a short dumping phase.
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Affiliation(s)
- Jean-Philippe Pezy
- Normandie Univ., UNICAEN, UNIROUEN, CNRS UMR 6143 M2C, Laboratoire Morphodynamique Continentale et Côtière, 24 rue des Tilleuls, 14000 Caen, France.
| | - Aurore Raoux
- Normandie Univ., UNICAEN, UNIROUEN, CNRS UMR 6143 M2C, Laboratoire Morphodynamique Continentale et Côtière, 24 rue des Tilleuls, 14000 Caen, France; Normandie Univ., UNICAEN, UMR BOREA (MNHN, UPMC, CNRS-7208, IRD-207), Esplanade de la Paix, 14032 Caen CEDEX 5, France
| | - Stella Marmin
- Normandie Univ., UNICAEN, UNIROUEN, CNRS UMR 6143 M2C, Laboratoire Morphodynamique Continentale et Côtière, 24 rue des Tilleuls, 14000 Caen, France
| | - Pierre Balay
- Cellule de Suivi du Littoral Normand, CSLN, 53 Rue de Prony, 76600 Le Havre, France
| | - Nathalie Niquil
- Normandie Univ., UNICAEN, UMR BOREA (MNHN, UPMC, CNRS-7208, IRD-207), Esplanade de la Paix, 14032 Caen CEDEX 5, France
| | - Jean-Claude Dauvin
- Normandie Univ., UNICAEN, UNIROUEN, CNRS UMR 6143 M2C, Laboratoire Morphodynamique Continentale et Côtière, 24 rue des Tilleuls, 14000 Caen, France
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Prato G, Barrier C, Francour P, Cappanera V, Markantonatou V, Guidetti P, Mangialajo L, Cattaneo‐Vietti R, Gascuel D. Assessing interacting impacts of artisanal and recreational fisheries in a small Marine Protected Area (Portofino, NW Mediterranean Sea). Ecosphere 2016. [DOI: 10.1002/ecs2.1601] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Giulia Prato
- Université Nice Sophia Antipolis CNRS, FRE 3729 ECOMERS Parc Valrose 28 06108 Nice Cedex France
| | - Celine Barrier
- Université Nice Sophia Antipolis CNRS, FRE 3729 ECOMERS Parc Valrose 28 06108 Nice Cedex France
| | - Patrice Francour
- Université Nice Sophia Antipolis CNRS, FRE 3729 ECOMERS Parc Valrose 28 06108 Nice Cedex France
| | | | | | - Paolo Guidetti
- Université Nice Sophia Antipolis CNRS, FRE 3729 ECOMERS Parc Valrose 28 06108 Nice Cedex France
| | - Luisa Mangialajo
- Université Nice Sophia Antipolis CNRS, FRE 3729 ECOMERS Parc Valrose 28 06108 Nice Cedex France
- Laboratoire d'Océanographie de Villefranche INSU‐CNRS UPMC Univ Paris 06 Sorbonne Universités 06230 Villefranche sur Mer France
| | | | - Didier Gascuel
- UMR ESE Ecology and Ecosystem Health Agrocampus Ouest Université Bretagne Loire 65 rue de Saint Brieuc, CS 84215 35042 Rennes Cedex France
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Using stable isotope analysis to validate effective trophic levels from Ecopath models of areas closed and open to shrimp trawling in Core Sound, NC, USA. Ecol Modell 2014. [DOI: 10.1016/j.ecolmodel.2014.03.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Guénette S, Meissa B, Gascuel D. Assessing the contribution of marine protected areas to the trophic functioning of ecosystems: a model for the Banc d'Arguin and the Mauritanian shelf. PLoS One 2014; 9:e94742. [PMID: 24728033 PMCID: PMC3984206 DOI: 10.1371/journal.pone.0094742] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 03/20/2014] [Indexed: 12/01/2022] Open
Abstract
Most modelling studies addressed the effectiveness of marine protected areas (MPA) for fisheries sustainability through single species approach. Only a few models analysed the potential benefits of MPAs at the ecosystem level, estimating the potential export of fish biomass from the reserve or analysing the trophic relationships between organisms inside and outside the MPA. Here, we propose to use food web models to assess the contribution of a MPA to the trophic functioning of a larger ecosystem. This approach is applied to the Banc d’Arguin National Park, a large MPA located on the Mauritanian shelf. The ecosystem was modeled using Ecopath with Ecosim, a model that accounts for fisheries, food web structure, and some aspects of the spatial distribution of species, for the period 1991–2006. Gaps in knowledge and uncertainty were taken into account by building three different models. Results showed that the Banc d’Arguin contributes about 9 to 13% to the total consumption, is supporting about 23% of the total production and 18% of the total catch of the Mauritanian shelf ecosystem, and up to 50% for coastal fish. Of the 29 exploited groups, 15 depend on the Banc for more than 30% of their direct or indirect consumptions. Between 1991 and 2006, the fishing pressure increased leading to a decrease in biomass and the catch of high trophic levels, confirming their overall overexploitation. Ecosim simulations showed that adding a new fleet in the Banc d’Arguin would have large impacts on the species with a high reliance on the Banc for food, resulting in a 23% decrease in the current outside MPA catches. We conclude on the usefulness of food web models to assess MPAs contribution to larger ecosystem functioning.
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Affiliation(s)
- Sylvie Guénette
- UMR Agrocampus Ouest, Inra, Ecologie et santé des écosystèmes, Université Européenne de Bretagne, Rennes, France
- * E-mail:
| | - Beyah Meissa
- UMR Agrocampus Ouest, Inra, Ecologie et santé des écosystèmes, Université Européenne de Bretagne, Rennes, France
- Institut Mauritanien de Recherches Océanographiques et des Pêches (IMROP), Nouadhibou, Mauritanie
| | - Didier Gascuel
- UMR Agrocampus Ouest, Inra, Ecologie et santé des écosystèmes, Université Européenne de Bretagne, Rennes, France
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The role of pre-existing disturbances in the effect of marine reserves on coastal ecosystems: a modelling approach. PLoS One 2013; 8:e61207. [PMID: 23593432 PMCID: PMC3625232 DOI: 10.1371/journal.pone.0061207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 03/07/2013] [Indexed: 12/02/2022] Open
Abstract
We have used an end-to-end ecosystem model to explore responses over 30 years to coastal no-take reserves covering up to 6% of the fifty thousand square kilometres of continental shelf and slope off the coast of New South Wales (Australia). The model is based on the Atlantis framework, which includes a deterministic, spatially resolved three-dimensional biophysical model that tracks nutrient flows through key biological groups, as well as extraction by a range of fisheries. The model results support previous empirical studies in finding clear benefits of reserves to top predators such as sharks and rays throughout the region, while also showing how many of their major prey groups (including commercial species) experienced significant declines. It was found that the net impact of marine reserves was dependent on the pre-existing levels of disturbance (i.e. fishing pressure), and to a lesser extent on the size of the marine reserves. The high fishing scenario resulted in a strongly perturbed system, where the introduction of marine reserves had clear and mostly direct effects on biomass and functional biodiversity. However, under the lower fishing pressure scenario, the introduction of marine reserves caused both direct positive effects, mainly on shark groups, and indirect negative effects through trophic cascades. Our study illustrates the need to carefully align the design and implementation of marine reserves with policy and management objectives. Trade-offs may exist not only between fisheries and conservation objectives, but also among conservation objectives.
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