A Potential Role of Shrimp Farms for the Conservation of Nearctic Shorebird Populations

Navedo, Juan G.; Fernández, Guillermo; Fonseca, Juanita; Drever, Mark C.

doi:10.1007/s12237-014-9851-0

Cited by 23 publications

(54 citation statements)

References 35 publications

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“…Coastal aquaculture ponds, including shrimp farms, can provide foraging habitats for declining shorebird populations in south-western Europe, Asia and America. Extensive aquaculture ponds in south-western Europe (Kloskowski et al 2009;Marquez-Ferrando et al 2015;Walton et al 2015a) or Mexico (Navedo et al 2015b) are used by large numbers of shorebirds and waterbirds. In contrast, despite currently supplying 89% of global aquaculture production (FAO 2012), aquaculture ponds in Asia do not appear to provide relevant foraging opportunities for shorebirds (Yasu e & Dearden 2009;Sripanomyom et al 2011;Li et al 2013;Green et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Semi-intensive shrimp ponds in north-western Mexico are harvested sequentially by draining water levels to concentrate shrimp at the exit gate. After shrimp harvesting, each pond is isolated from tidal influence using lock gates and eventually dries out (Navedo et al 2015b). During this post-harvest period, shrimp ponds briefly mimic intertidal areas until they dry due to high evaporation rates.…”

Section: Introductionmentioning

confidence: 99%

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Identifying management actions to increase foraging opportunities for shorebirds at semi‐intensive shrimp farms

Navedo

Fernández

Valdivia

et al. 2016

Journal of Applied Ecology

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1. The expansion of aquaculture has resulted in widespread habitat conversion throughout the world. Identifying beneficial management measures may dramatically reduce negative impacts of aquaculture for migratory birds. 2. We studied how densities of foraging shorebirds varied at ponds within a semi-intensive shrimp aquaculture farm on the north-western coast of Mexico, as related to timing of harvest and tidal cycles. Further, we estimated the total daily available area for each shorebird species throughout two entire harvesting seasons at the shrimp farm. 3. High densities (average ca. 50 individuals per ha) of foraging shorebirds were found during the first days following pond harvest. The most abundant species were Willet Tringa semipalmata and Black-necked Stilt Himantopus mexicanus, followed by Marbled Godwit Limosa fedoa and American Avocet Recurvirostra americana. Other regular, but less abundant, species were whimbrel Numenius phaeopus and dowitchers Limnodromus spp. 4. Densities of shorebirds sharply declined daily following harvest. In addition, the time-window availability of harvested ponds was related to each species' foraging behaviour: <2 days for godwits and dowitchers, 4 days for stilts, 5 days for willets and more than a week for avocets and whimbrels. However, birds continued to use harvested ponds that received a low, but continuous water influx. 5. Our results demonstrate that a tropical shrimp farm represents a patchy environment that provides 4Á3-12Á7% (depending on species) of its total area as foraging opportunities for shorebirds. 6. Synthesis and applications. Sequential harvesting of shrimp aquaculture farm ponds and increasing moisture of the substrate by providing some water supply to harvested ponds, at least throughout the harvesting period, could integrate shorebird conservation into shrimpfarm production. These low-cost and easy management procedures would not increase costs or affect shrimp productionthus representing a win-win opportunityand would have potential applications for shorebird conservation throughout the world.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identifying management actions to increase foraging opportunities for shorebirds at semi‐intensive shrimp farms

Navedo

Fernández

Valdivia

et al. 2016

Journal of Applied Ecology

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“…This practice has been promoted in Europe for another capture-based farmed endangered species, the European eel Anguilla anguilla (Linnaeus, 1758), where the harvesters/producers use part of their animal stock for natural restocking purposes (Jacoby & Gollock 2014). Similar effort but in a total different case recently demonstrated by Navedo et al (2014) where the shrimp farm installations in Mexico, under an appropriate management support the conservation efforts of nearctic shorebirds by providing short term but absolute necessary complementary foraging areas. The combination of aquaculture with conservation of wildlife may be is a current research trend in the industry that could be expressed in various forms and species depending on the local ecosystems specifications and requirements.…”

Section: Discussionmentioning

confidence: 60%

The Recruitment of the Endangered Fan MusselPinna nobilis(Linnaeus, 1758) on the Ropes of a Mediterranean Mussel Long Line Farm

Theodorou¹,

James

Tzovenis

et al. 2015

Journal of Shellfish Research

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“…Several studies have suggested partnerships with local authorities and land users as a means to provide shorebird habitat within existing working wetlands (e.g., Sripanomyom et al, 2011;Navedo, Fernández, Fonseca, & Drever, 2014). Innovative approaches to partnerships with local land users can ensure that resources are allocated efficiently and provide local benefits.…”

Section: Implementing Joined-up Managementmentioning

confidence: 99%

“…At stopover and staging sites in between, wetlands with high productivity provide critical feeding and resting habitat necessary to complete migration successfully (Ma et al, ). In the EAAF, the scale and rate of intertidal habitat loss and degradation in Yellow Sea staging areas (Melville, Chen, & Ma, ; Murray, Clemens, Phinn, Possingham, & Fuller, ) are well accepted as the primary driver of severe population declines in multiple shorebird species (Amano, Székely, Koyama, Amano, & Sutherland, ; Piersma et al, Studds et al, ). This conservation crisis has prompted a focussed research effort to highlight negative consequences of coastal development and armouring on migratory waterbirds and the need to halt intertidal habitat loss (Choi et al, ; Ma et al, ; Murray, Ma, & Fuller, ; Piersma et al, ; Yang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Multiple habitat use by declining migratory birds necessitates joined‐up conservation

Jackson

Carrasco

Choi

et al. 2019

Ecology and Evolution

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Many species depend on multiple habitats at different points in space and time. Their effective conservation requires an understanding of how and when each habitat is used, coupled with adequate protection. Migratory shorebirds use intertidal and supratidal wetlands, both of which are affected by coastal landscape change. Yet the extent to which shorebirds use artificial supratidal habitats, particularly at highly developed stopover sites, remains poorly understood leading to potential deficiencies in habitat management. We surveyed shorebirds on their southward migration in southern Jiangsu, a critical stopover region in the East Asian Australasian Flyway (EAAF), to measure their use of artificial supratidal habitats and assess linkages between intertidal and supratidal habitat use. To inform management, we examined how biophysical features influenced occupancy of supratidal habitats, and whether these habitats were used for roosting or foraging. We found that shorebirds at four of five sites were limited to artificial supratidal habitats at high tide for ~11–25 days per month because natural intertidal flats were completely covered by seawater. Within the supratidal landscape, at least 37 shorebird species aggregated on artificial wetlands, and shorebirds were more abundant on larger ponds with less water cover, less vegetation, at least one unvegetated bund, and fewer built structures nearby. Artificial supratidal habitats were rarely used for foraging and rarely occupied when intertidal flats were available, underscoring the complementarity between supratidal roosting habitat and intertidal foraging habitat. Joined‐up artificial supratidal management and natural intertidal habitat conservation are clearly required at our study site given the simultaneous dependence by over 35,000 migrating shorebirds on both habitats. Guided by observed patterns of habitat use, there is a clear opportunity to improve habitat condition by working with local land custodians to consider shorebird habitat requirements when managing supratidal ponds. This approach is likely applicable to shorebird sites throughout the EAAF.

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A Potential Role of Shrimp Farms for the Conservation of Nearctic Shorebird Populations

Cited by 23 publications

References 35 publications

Identifying management actions to increase foraging opportunities for shorebirds at semi‐intensive shrimp farms

Identifying management actions to increase foraging opportunities for shorebirds at semi‐intensive shrimp farms

The Recruitment of the Endangered Fan MusselPinna nobilis(Linnaeus, 1758) on the Ropes of a Mediterranean Mussel Long Line Farm

Multiple habitat use by declining migratory birds necessitates joined‐up conservation

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