2023
DOI: 10.1002/eap.2799
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Does experimental seaweed cultivation affect benthic communities and shorebirds? Applications for extensive aquaculture

Abstract: Extensive seaweed aquaculture is a growing industry expected to expand globally due to its relatively low impact and benefits in the form of ecosystem services. However, seaweeds are ecosystem engineers that may alter coastal environments by creating complex habitats on previously bare mudflats. These changes may scale up to top-consumers, particularly migratory shorebirds, species of conservation concern that regulate trophic webs at these habitats. Understanding how habitats are transformed and how this affe… Show more

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Cited by 8 publications
(4 citation statements)
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“…Contrary to previous evidence in other godwit species [e.g., 31 ], our prediction about home range size and bill length was not supported by the data. This could be explained by the high availability of polychaete worms (the preferred prey items of godwits) on Chiloé [ 26 , 33 ], as well as a general low rate of interspecific competition in high austral latitudes. In this scenario, godwits with different bill lengths may be able to successfully exploit the rich food supply in the same bays by minimizing the number of patches visited and, consequently, having similar home range sizes.…”
Section: Discussionmentioning
confidence: 99%
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“…Contrary to previous evidence in other godwit species [e.g., 31 ], our prediction about home range size and bill length was not supported by the data. This could be explained by the high availability of polychaete worms (the preferred prey items of godwits) on Chiloé [ 26 , 33 ], as well as a general low rate of interspecific competition in high austral latitudes. In this scenario, godwits with different bill lengths may be able to successfully exploit the rich food supply in the same bays by minimizing the number of patches visited and, consequently, having similar home range sizes.…”
Section: Discussionmentioning
confidence: 99%
“…In godwits, bill length is a good proxy for body size [ 29 ]; indeed, individual differences in bill length may reflect social dominance and foraging skills, with larger individuals being generally dominant over smaller individuals [ 30 ], and thus different movement strategies to exploit resources in a tidally structured environment [e.g., 31 , 32 ]. Outside the breeding season, godwits are tactile foragers that prey mainly on polychaete worms [ 33 ] and, as such, a longer bill allows them to access more prey, especially large worms [ 29 ].…”
Section: Introductionmentioning
confidence: 99%
“…The harvesting of red algae Agarophyton chilensis , an important local economic resource, from the intertidal areas is one particularly common form of disturbance (Martínez‐Curci et al . 2022). This practice involves several people labouring together, often with oxen‐ or horse‐drawn carts, to transport collected algae off the intertidal area to dry in supratidal areas (Navedo et al .…”
Section: Methodsmentioning
confidence: 99%
“…The effects of such practices on shorebird communities are complex. In some cases, they may be mutually beneficialareas with algae cultivation promote higher levels of benthic macroinvertebrates and are preferred by tactile-foraging shorebird species like godwits 45 . In other cases, though, the human disturbance associated with the maintenance and harvesting of algae negatively influences godwit foraging efficiency and leads to decreases in body condition and survival in individuals from highly disturbed sites [46][47][48] .…”
Section: Are Godwits Changing Their Migration Timing Adaptively?mentioning
confidence: 99%