Spatio-temporal variability of ichthyophagous bird assemblage around western Mediterranean open-sea cage fish farms

Aguado‐Giménez, Felipe; Eguía-Martínez, Sergio; Cerezo-Valverde, Jesús; García‐García, Benjamín

doi:10.1016/j.marenvres.2018.06.008

Cited by 5 publications

(6 citation statements)

References 37 publications

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“…Depending on the geographic range of these seabird species, the potential for overlap with aquaculture farms is an imperative siting consideration 260 . Both mussel farms and finfish farms attract seabirds 36,109,261–264 . Marine aquaculture farms may exclude seabirds from important habitats including migratory routes and feeding grounds, or may cause benthic disturbances that cause high turbidity and reduce foraging success, altered prey availability, foreign object ingestion, entanglement, and collision with farm structures 261,263,265,266 .…”

Section: Protected Species and Marine Aquaculturementioning

confidence: 99%

“…In a comparison of seabird activity budgets between three areas of nearshore mussel farms and three control sites in Bantry Bay, Ireland, Roycroft et al 265 concluded the impact of mussel suspension culture appeared to be positive or neutral on seabirds at the study site. Aguado‐Giménez et al 264 observed the spatiotemporal variability of piscivorous sea birds over a year at eight fish farms in the western Mediterranean and recorded seasonal differences in bird density and assemblages. Bird density increased from fall to winter and decreased in spring and summer, which was partially explained by season and distance to breeding/wintering grounds.…”

Section: Protected Species and Marine Aquaculturementioning

confidence: 99%

“…260 Both mussel farms and finfish farms attract seabirds. 36,109,[261][262][263][264] Marine aquaculture farms may exclude seabirds from important habitats including migratory routes and feeding grounds,…”

Section: Seabirdsmentioning

confidence: 99%

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A global review of protected species interactions with marine aquaculture

Bath

Price

Riley

et al. 2023

Reviews in Aquaculture

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As marine aquaculture expands around the world, there is increased concern for impacts to protected species. Documented cases of marine mammal, sea turtle, seabird, and shark interactions with aquaculture installations do exist but are challenging to find. This extensive review summarises the state of knowledge of protected species interactions with marine fish and shellfish aquaculture installations. Although seaweed aquaculture was beyond the scope of this review, some of the findings for shellfish and finfish aquaculture may be relevant. The potential impacts of farms including habitat exclusion, entanglement, entrapment, collisions, and behavioural modifications are the primary risks posed to protected species by marine aquaculture facilities and operations. In addition, indirect effects from habitat impacts of farm operations may be of concern in some areas as well as the cumulative impacts of multiple small or large farms in the same general vicinity. Decades of farm innovations and best management practices have been driven by industry, natural resource managers, conservation organisations, and international conservation agreements. This review is useful for informing industry planning and permitting to develop aquaculture in the open ocean. This work will help advance the science of conservation by synthesising the state of knowledge and provide managers and industry with more insight to protect the most vulnerable species.

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Section: Protected Species and Marine Aquaculturementioning

confidence: 99%

Section: Protected Species and Marine Aquaculturementioning

confidence: 99%

See 1 more Smart Citation

A global review of protected species interactions with marine aquaculture

Bath

Price

Riley

et al. 2023

Reviews in Aquaculture

View full text Add to dashboard Cite

show abstract

“…Aquacultures may additionally increase the importance of avian fish predators for the life-cycles of digeneans, nematodes, cestodes and acanthocephalans, aside from merely serving as final hosts ( Murugami et al ., 2018 ). Seabirds gather near fish farms ( Buschmann et al ., 2006 ; Aguado-Giménez et al ., 2018 ; Surman & Dunlop, 2015 ) which will lead to a more concentrated release of seabird faeces into the aquaculture’s immediate surroundings. Larvae of helminths contained in the faeces are thereby brought into more concentrated contact with their primary intermediate hosts (e.g.…”

Section: The Influence Of Aquaculturementioning

confidence: 99%

Impact of anthropogenous environmental factors on the marine ecosystem of trophically transmitted helminths and hosting seabirds: Focus on North Atlantic, North Sea, Baltic and the Arctic seas

Schwantes

2023

Helminthologia

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Summary Alongside natural factors, human activities have a major impact on the marine environment and thus influence processes in vulnerable ecosystems. The major purpose of this review is to summarise the current understanding as to how manmade factors influence the marine biocenosis of helminths, their intermediate hosts as well as seabirds as their final hosts. Moreover, it highlights current knowledge gaps regarding this ecosystem, which should be closed in order to gain a more complete understanding of these interactions. This work is primarily focused on helminths parasitizing seabirds of the North Atlantic and the Arctic Ocean. The complex life cycles of seabird helminths may be impacted by fishing and aquaculture, as they interfere with the abundance of fish and seabird species, while the latter also affects the geographical distribution of intermediate hosts (marine bivalve and fish species), and may therefore alter the intertwined marine ecosystem. Increasing temperatures and seawater acidification as well as environmental pollutants may have negative or positive effects on different parts of this interactive ecosystem and may entail shifts in the abundance or regional distribution of parasites and/or intermediate and final hosts. Organic pollutants and trace elements may weaken the immune system of the hosting seabirds and hence affect the final host’s ability to control the endoparasites. On the other hand, in some cases helminths seem to function as a sink for trace elements resulting in decreased concentrations of heavy metals in birds’ tissues. Furthermore, this article also describes the role of helminths in mass mortality events amongst seabird populations, which beside natural causes (weather, viral and bacterial infections) have anthropogenous origin as well (e.g. oil spills, climate change, overfishing and environmental pollution).

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“…Cama and Arcos [4] calculated the wintering population in Spain at about 230,000 individuals in 2010, and Molina et al [5] assessed a minimum of around 125,000 breeding pairs in 2007-2009. It was classified in the global and European Red Lists as "Least Concern" [2] due to the population increase in the late 20th and early 21st centuries. This increase is attributed to its adaptability in utilizing new food sources such as organic waste from open landfills, discarded fishery by-products, and processed food from marine aquaculture farms [3,4,[6][7][8][9]. However, in the Red List of Spain in 2022, it has been categorized as "Near Threatened" due to a "considerable decline in population size, albeit heterogeneously and more pronounced in the Cantabrian-Galician population of the lusitanius subspecies" [10], attributed to the closure of numerous landfills [9,11,12].…”

Section: Introductionmentioning

confidence: 99%

Landscape, Environmental, and Socioeconomic Impacts of an Invasive Bird Species: The Yellow-Legged Gull (<em>Larus michahellis</em>) in the Natural Park Salinas De San Pedro Del Pinatar (Murcia, Southeastern Spain)

Ballesteros-Pelegrín,

Sánchez-Sánchez,

Albacete

2024

Preprint

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Larus michahellis increased its population throughout the 20th century in its worldwide distribution area. The increase in the Salinas de San Pedro del Pinatar has produced changes in the habitats due to the contribution of guano, predation on birds, incidents with workers, and the production of salt. The objective is to analyze the impacts of L. michahellis on the landscape, habitats, waterfowl, salt production, and workers, as well as to evaluate the effectiveness of control activities. Censuses of wintering L. michahellis have been carried out between 1990-2021, of nesting aquatic birds between 1994-2021, and nests and eggs of L. michahellis have been eliminated between 2000-2021. The result has been a decrease in pairs of L. michahellis, recovery of waterfowl populations, colonization of others, absence of incidents with workers, and reduction of damage to salt production. However, to reach a definitive solution, measures should be adopted to prevent L. michahellis from accessing the main sources of human food: urban solid waste dumps, aquaculture farms, and fish discards.

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Spatio-temporal variability of ichthyophagous bird assemblage around western Mediterranean open-sea cage fish farms

Cited by 5 publications

References 37 publications

A global review of protected species interactions with marine aquaculture

A global review of protected species interactions with marine aquaculture

Impact of anthropogenous environmental factors on the marine ecosystem of trophically transmitted helminths and hosting seabirds: Focus on North Atlantic, North Sea, Baltic and the Arctic seas

Landscape, Environmental, and Socioeconomic Impacts of an Invasive Bird Species: The Yellow-Legged Gull (<em>Larus michahellis</em>) in the Natural Park Salinas De San Pedro Del Pinatar (Murcia, Southeastern Spain)

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