Rice and duck, a good combination? Identifying the incentives and triggers for joint rice farming and wild duck conservation

Pernollet, Claire A.; Simpson, David; Gauthier‐Clerc, Michel; Guillemain, Matthieu

doi:10.1016/j.agee.2015.08.018

Cited by 55 publications

(39 citation statements)

References 121 publications

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“…The higher estimate of rice area in 2015, in part, may reflect an increase in post-harvest flooding of rice since the mandated phase-out of rice straw burning [74,75] as an effective agricultural practice to decompose rice straw [76]. Additionally, revenues from waterfowl hunting leases on flooded fields also have supported the practice [77,78]. However, due to increasing unreliability and rising costs of water supplies, other methods to remove or decompose rice straw (e.g., increased tillage or straw baling and removal) may increasingly replace winter flooding [61].…”

Section: Discussionmentioning

confidence: 99%

Projected Impacts of Climate, Urbanization, Water Management, and Wetland Restoration on Waterbird Habitat in California’s Central Valley

Matchett

Fleskes

2017

PLoS ONE

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The Central Valley of California is one of the most important regions for wintering waterbirds in North America despite extensive anthropogenic landscape modification and decline of historical wetlands there. Like many other mediterranean-climate ecosystems across the globe, the Central Valley has been subject to a burgeoning human population and expansion and intensification of agricultural and urban development that have impacted wildlife habitats. Future effects of urban development, changes in water supply management, and precipitation and air temperature related to global climate change on area of waterbird habitat in the Central Valley are uncertain, yet potentially substantial. Therefore, we modeled area of waterbird habitats for 17 climate, urbanization, water supply management, and wetland restoration scenarios for years 2006–2099 using a water resources and scenario modeling framework. Planned wetland restoration largely compensated for adverse effects of climate, urbanization, and water supply management changes on habitat areas through 2065, but fell short thereafter for all except one scenario. Projected habitat reductions due to climate models were more frequent and greater than under the recent historical climate and their magnitude increased through time. After 2065, area of waterbird habitat in all scenarios that included severe warmer, drier climate was projected to be >15% less than in the “existing” landscape most years. The greatest reduction in waterbird habitat occurred in scenarios that combined warmer, drier climate and plausible water supply management options affecting priority and delivery of water available for waterbird habitats. This scenario modeling addresses the complexity and uncertainties in the Central Valley landscape, use and management of related water supplies, and climate to inform waterbird habitat conservation and other resource management planning. Results indicate that increased wetland restoration and additional conservation and climate change adaptation strategies may be warranted to maintain habitat adequate to support waterbirds in the Central Valley.

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Section: Discussionmentioning

confidence: 99%

Projected Impacts of Climate, Urbanization, Water Management, and Wetland Restoration on Waterbird Habitat in California’s Central Valley

Matchett

Fleskes

2017

PLoS ONE

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“…However, local implementation of flooding would need to be evaluated (Rogers et al 2015) in terms of cost for the farmer (e.g. Pernollet et al 2015b) and current sanitary laws.…”

Section: Numenius Phaeopusmentioning

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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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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“…The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results. Bird habitat Open water salt marsh management and mosquito ditches USA [191] Integrated marsh management USA [192] Rice fields Philippines [193], Brazil [189], China, Japan [194], France [195] [197,198] Wetland/aquatic plant habitat Paddies and ditches China [199,200] USA [191] Hot springs swimming pools and baths Turkey [211] …”

Section: Conflicts Of Interestmentioning

confidence: 99%

“…Paddies / fields China [194,199], USA [212], Philippines [193], Brazil [189], Japan [194], France [195] …”

Section: Ricementioning

confidence: 99%

Artificial Aquatic Ecosystems

Clifford

Heffernan

2018

Water

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Abstract:As humans increasingly alter the surface geomorphology of the Earth, a multitude of artificial aquatic systems have appeared, both deliberately and accidentally. Human modifications to the hydroscape range from alteration of existing waterbodies to construction of new ones. The extent of these systems makes them important and dynamic components of modern landscapes, but their condition and provisioning of ecosystem services by these systems are underexplored, and likely underestimated. Instead of accepting that artificial ecosystems have intrinsically low values, environmental scientists should determine what combination of factors, including setting, planning and construction, subsequent management and policy, and time, impact the condition of these systems. Scientists, social scientists, and policymakers should more thoroughly evaluate whether current study and management of artificial aquatic systems is based on the actual ecological condition of these systems, or judged differently, due to artificiality, and consider resultant possible changes in goals for these systems. The emerging recognition and study of artificial aquatic systems presents an exciting and important opportunity for science and society.

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Rice and duck, a good combination? Identifying the incentives and triggers for joint rice farming and wild duck conservation

Cited by 55 publications

References 121 publications

Projected Impacts of Climate, Urbanization, Water Management, and Wetland Restoration on Waterbird Habitat in California’s Central Valley

Projected Impacts of Climate, Urbanization, Water Management, and Wetland Restoration on Waterbird Habitat in California’s Central Valley

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

Artificial Aquatic Ecosystems

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