Food-web interactions in a coastal ecosystem influenced by upwelling and terrestrial runoff off North-West Spain

Paradell, Oriol Giralt; López, Bruno Díaz; Methion, Séverine; Rogan, Emer

doi:10.1016/j.marenvres.2020.104933

Cited by 13 publications

(4 citation statements)

References 85 publications

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“…To compare the fish biodiversity, the method of stable isotopes of carbon and nitrogen was applied to understand the biogeochemical processes associated with fish population dynamics and habitat degradation processes. , The stoichiometric variations of isotopic stable carbon and nitrogen can reflect the nutrient cycling rates and energy flows levels, and thus manifest the variations in the structure and function of aquatic ecosystems. − During the process of element transfer and energy flow, both intra- and inter-species changes in the keystone species of the fish community can irreversibly lead to ecosystem stability and fishery resource sustainability collapse, − thereby disrupting trophic levels of aquatic organism regulation. ,− Furthermore, a reconstruction of the food web can display fish interactions clearly by using carbon and nitrogen isotope technology and further provides benefits for evaluating the impacts of human activities on fish biodiversity alterations. , …”

Section: Introductionmentioning

confidence: 99%

Supporting Evidence for the “Ten-Year Fishing Ban”: Different Modes of Fishing and Pollution Induce a Fish Diversity Decline between the Pearl River and Its Estuary

et al. 2023

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To settle the emerging debate on whether a "ten-year fishing ban" is too long or an annual fishing moratorium is enough for fish resource restoration in the Yangtze River, a long-term comparison between the 1980s and the 2020s in the Pearl River was performed. Significant declines in fish biodiversity were determined among both the Pearl River and its estuary over the past decades. The trophic level increased from 4 to 5 in the estuary, whereas it remained at 4 in the Pearl River. Interestingly, an opposite trend in interspecies networks of fish was observed between the Pearl River and its estuary. A reduced density and increased links were detected in the Pearl River as its interspecies networks became complex, which was in contrast to that in the estuary. Furthermore, fishing and pollution were both confirmed to participate in the fish biodiversity decline in the Pearl River, whereas pollution was the dominant factor inducing the fish biodiversity decline in the estuary. Our case indicated that an annual fishing moratorium is not enough for fish resource restoration and supports the strategy of "ten-year fishing ban". Moreover, pollution should also be brought under control so that we can facilitate fish resource restoration.

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Section: Introductionmentioning

confidence: 99%

Supporting Evidence for the “Ten-Year Fishing Ban”: Different Modes of Fishing and Pollution Induce a Fish Diversity Decline between the Pearl River and Its Estuary

et al. 2023

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“…Brager, 1998; Gostischa et al., 2021; Penry et al., 2011; Ridoux, 1987; Stockin et al., 2009) and typically involve multiple bird species gathering in the presence of schools of fish. Dolphins and other cetaceans are widely recognized as both charismatic megafauna and ecological health indicator species, but are not typically viewed as the cornerstone of their ecosystems (Giralt Paradell et al., 2020; Parsons et al., 2015). Our synthesis shows that they may serve a far more important role in interspecies interactions than previously recognized, as cetaceans were the primary disturbers we documented for seabirds and shorebirds, and may also serve as disturbers for other clades we did not examine.…”

Section: Discussionmentioning

confidence: 99%

Following the feeder: A global synthesis of disturbance‐based foraging associations of birds

Dominguez,

Hauber,

Tarwater

et al. 2023

Journal of Animal Ecology

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Species interactions link animal behaviour to community structure and macroecological patterns of biodiversity. One common type of trophic species interaction is disturbance foraging—the act of obtaining food at a disturbance created by another organism. Disturbance foraging is widespread across the animal kingdom, especially among birds, yet previous research has been largely anecdotal and we still lack a synthetic understanding of how this behaviour varies geographically, phylogenetically and ecologically. To address these gaps, we conducted a comprehensive literature review to test focal hypotheses about disturbance foraging behaviour in birds. We found that avian disturbance foraging was geographically ubiquitous, occurring in both aquatic and terrestrial habitats across six continents and four oceans. Consistent with predictions based on established species diversity gradients in different habitat types, the majority of terrestrial observations occurred at tropical latitudes, whereas aquatic observations took place most frequently in temperate marine waters. Although disturbance foraging was widespread across the avian phylogeny, contrary to our prediction, the behaviour was also conserved phylogenetically (Pagel's λ = 0.7) and clustered within suboscine landbirds in terrestrial environments and seabirds in aquatic environments. Similarly, although disturbers were taxonomically diverse as we predicted, interactions were unexpectedly dominated by swarm‐raiding ants in terrestrial environments and cetaceans in aquatic environments. Diet and body mass were also important predictors of disturbance foraging associations: Responders followed disturbers with similar diets and larger body sizes. Overall, our hypothesis‐testing framework provides insight into the importance of geography, phylogeny and ecology as predictors of disturbance foraging behaviour. We anticipate that this comprehensive assessment of disturbance foraging will serve to generate additional hypotheses and spark future research and management considerations about this fascinating but poorly studied suite of species interactions, especially as biotic interactions face unprecedented risks in our rapidly changing world.

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“…An Ecopath model was developed for the Gulf of Cadiz, located at the southern part of the west coast, investigating the trophic relationships and fishing impacts in an exploited ecosystem (Torres et al, 2013). Further north, EwE models were constructed for the Portuguese and Galician coasts, focusing on food web structure and ecological roles (Veiga-Malta et al, 2019;Giralt Paradell et al, 2020;Giralt Paradell et al, 2021), small pelagic fisheries (Szalaj et al, 2021) and climate (Szalaj et al, 2022). Smaller parts of the west coast of the Iberian Peninsula and lagoon ecosystems were modelled separately; namely, the Ria Formosa (Gamito and Erzini, 2005), the Mondego Estuary (Patrıćio and Marques, 2006;Baeta et al, 2011), the Ria de Aveiro (Bueno-Pardo et al, 2018) and the Ria de Arousa (Outeiro et al, 2018).…”

Section: Bay Of Biscay Celtic Sea and Iberian Coastmentioning

confidence: 99%

Ecotrophic perspective in fisheries management: a review of Ecopath with Ecosim models in European marine ecosystems

et al. 2023

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The aim of this work is to present the food web models developed using the Ecopath with Ecosim (EwE) software tool to describe structure and functioning of various European marine ecosystems (eastern, central and western Mediterranean Sea; Black Sea; Bay of Biscay, Celtic Sea and Iberian coast; Baltic Sea; North Sea; English Channel, Irish Sea and west Scottish Sea; and Norwegian and Barents Seas). A total of 195 Ecopath models based on 168 scientific publications, which report original, updated and modified versions, were reviewed. Seventy models included Ecosim temporal simulations while 28 implemented Ecospace spatiotemporal dynamics. Most of the models and publications referred to the western Mediterranean Sea followed by the English Channel, Irish Sea and west Scottish Sea sub-regions. In the Mediterranean Sea, the western region had the largest number of models and publications, followed by the central and eastern regions; similar trends were observed in previous literature reviews. Most models addressed ecosystem functioning and fisheries-related hypotheses while several investigated the impact of climate change, the presence of alien species, aquaculture, chemical pollution, infrastructure, and energy production. Model complexity (i.e., number of functional groups) increased over time. Main forcing factors considered to run spatial and temporal simulations were trophic interactions, fishery, and primary production. Average scores of ecosystem indicators derived from the Ecopath summary statistics were compared. Uncertainty was also investigated based on the use of the Ecosampler plug-in and the Monte Carlo routine; only one third of the reviewed publications incorporated uncertainty analysis. Only a limited number of the models included the use of the ECOIND plug-in which provides the user with quantitative output of ecological indicators. We assert that the EwE modelling approach is a successful tool which provides a quantitative framework to analyse the structure and dynamics of ecosystems, and to evaluate the potential impacts of different management scenarios.

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Food-web interactions in a coastal ecosystem influenced by upwelling and terrestrial runoff off North-West Spain

Cited by 13 publications

References 85 publications

Supporting Evidence for the “Ten-Year Fishing Ban”: Different Modes of Fishing and Pollution Induce a Fish Diversity Decline between the Pearl River and Its Estuary

Supporting Evidence for the “Ten-Year Fishing Ban”: Different Modes of Fishing and Pollution Induce a Fish Diversity Decline between the Pearl River and Its Estuary

Following the feeder: A global synthesis of disturbance‐based foraging associations of birds

Ecotrophic perspective in fisheries management: a review of Ecopath with Ecosim models in European marine ecosystems

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