Pest reduction services by birds in shade and sun coffee in Jamaica

Johnson, Matthew D.; Kellermann, Jherime L.; Stercho, Amy M.

doi:10.1111/j.1469-1795.2009.00310.x

Cited by 144 publications

(120 citation statements)

References 35 publications

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“…Alternatively, higher pest removal with increasing shade cover may be due to a functional response, whereby birds are more likely to detect and consume large and profitable prey like caterpillars when they can search for them from above. However, this finding differs from other studies that found no relationship between avian pest control and any measures of vegetation complexity, including canopy cover (Kellermann et al 2008, Philpott et al 2009) or actually found a negative correlation with vegetation complexity (Johnson et al 2010). Even so, the most comparable study examining the removal of lepidopteran larvae also found a positive relationship between canopy cover and pest removal (Perfecto et al 2004), whereas studies that found no relationship examined predation of coffee berry borer (Kellermann et al 2008, Philpott et al 2009).…”

Section: Modelcontrasting

confidence: 55%

“…In the few studies examining direct effects, pest control was positively associated with measures of vegetation complexity Armbrecht 2006, Armbrecht andGallego 2007), had no relationship with measures of vegetation (Kellermann et al 2008, Philpott et al 2009 or was actually negatively correlated with vegetation complexity, potentially due to higher ambient levels of pests in sun coffee (Johnson et al 2010). Coffee berry borer abundance did decrease with greater levels of forest cover on farms in Costa Rica (Karp et al 2013) and a simulation model based on data from Jamaican coffee farms found that the presence of forest patches decreased coffee berry borer infestations, but only until up to a certain amount of forested area (Railsback and Johnson 2014).…”

Section: List Of Tablesmentioning

confidence: 99%

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Quantifying pest control services by birds and ants in Kenyan coffee farms

Milligan

Johnson

Garfinkel

et al. 2016

Biological Conservation

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QUANTIFYING PEST CONTROL SERVICES BY BIRDS AND ANTS IN KENYAN COFFEE FARMS Megan MilliganEcosystem services, such as pest control and pollination, are critical benefits of biodiversity necessary for agricultural production. Predators, including insectivorous birds and ants, can provide important biological controls in agroecosystems, boosting crop yield and helping to offset the need for expensive inputs such as pesticides. With agricultural demand projected to increase in the future, two broad management strategies, termed land sparing and land sharing, have been proposed to conserve biodiversity while still meeting increased agricultural demand. Understanding the related impacts of habitat and landscape characteristics on the delivery of ecosystem services can better inform managers seeking to promote these benefits of biodiversity. In order to better understand these relationships, I conducted a sentinel pest experiment to investigate predation levels in response to a novel pest on coffee farms in central Kenya. The frequency of predation decreased significantly with increasing distance from adjacent forest fragments and was correlated with bird species richness. Predation was also significantly higher on shade compared to sun coffee farms. The mechanism through which the bird and ant communities are effecting pest removal is less clear, but encouraging particular preferential predators could positively influence pest control. In conclusion, a land sharing approach, via both the integration of shade trees and the conservation of small ii forest fragments within a farm, can support increased levels of pest control services provided by both birds and ants in Kenyan coffee farms.iii ACKNOWLEDGEMENTS

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Section: Modelcontrasting

confidence: 55%

Section: List Of Tablesmentioning

confidence: 99%

Quantifying pest control services by birds and ants in Kenyan coffee farms

Milligan

Johnson

Garfinkel

et al. 2016

Biological Conservation

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“…High diversity and abundance of ants provide important ES in coffee agroecosystems since ants are an important predator group 235,237 . Another predator studied in the coffee agroforest, birds, helps control coffee berry borers and thus increases coffee yield and farm income, a potentially important conservation incentive for producers 238,239 . Landscape heterogeneity may allow mobile predators to provide pest control broadly, despite localized variation in farming intensities.…”

Section: Biotic Regulationmentioning

confidence: 99%

Targeting perennial vegetation in agricultural landscapes for enhancing ecosystem services

Asbjornsen

Hernández‐Santana

Liebman

et al. 2013

Renew. Agric. Food Syst.

235

168

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Over the past century, agricultural landscapes worldwide have increasingly been managed for the primary purpose of producing food, while other diverse ecosystem services potentially available from these landscapes have often been undervalued and diminished. The incorporation of relatively small amounts of perennial vegetation in strategic locations within agricultural landscapes dominated by annual crops-or perennialization-creates an opportunity for enhancing the provision of a wide range of goods and services to society, such as water purification, hydrologic regulation, pollination services, control of pest and pathogen populations, diverse food and fuel products, and greater resilience to climate change and extreme disturbances, while at the same time improving the sustainability of food production. This paper synthesizes the current scientific theory and evidence for the role of perennial plants in balancing conservation with agricultural production, focusing on the Midwestern USA as a model system, while also drawing comparisons with other climatically diverse regions of the world. Particular emphasis is given to identifying promising opportunities for advancement and critical gaps in our knowledge related to purposefully integrating perennial vegetation into agroecosystems as a management tool for maximizing multiple benefits to society. AbstractOver the past century, agricultural landscapes worldwide have increasingly been managed for the primary purpose of producing food, while other diverse ecosystem services potentially available from these landscapes have often been undervalued and diminished. The incorporation of relatively small amounts of perennial vegetation in strategic locations within agricultural landscapes dominated by annual crops-or perennialization-creates an opportunity for enhancing the provision of a wide range of goods and services to society, such as water purification, hydrologic regulation, pollination services, control of pest and pathogen populations, diverse food and fuel products, and greater resilience to climate change and extreme disturbances, while at the same time improving the sustainability of food production. This paper synthesizes the current scientific theory and evidence for the role of perennial plants in balancing conservation with agricultural production, focusing on the Midwestern USA as a model system, while also drawing comparisons with other climatically diverse regions of the world. Particular emphasis is given to identifying promising opportunities for advancement and critical gaps in our knowledge related to purposefully integrating perennial vegetation into agroecosystems as a management tool for maximizing multiple benefits to society.

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“…Experimentos realizados na América Central demonstraram claramente que a taxa de remoção de artrópodes no campo, incluindo pestes, aumenta conforme aumenta a riqueza de espécies de aves (Philpott et al 2009). Em lavouras de café também na América Central, foi demonstrado que as aves reduzem significativamente a infestação do besouro (Hypothenemus hampei) nos cafezais, uma das pragas mais danosas para essas plantações em todo o mundo (Johnson et al 2010). Esses estudos indicam que a integração da produção com a conservação da biodiversidade pode caracterizar um sistema em que todos saem ganhando.…”

Section: Considerações Finaisunclassified

Impactos potenciais na avifauna decorrentes das alterações propostas para o Código Florestal Brasileiro

Develey¹,

Pongiluppi²

2010

Biota Neotrop.

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Abstract:Proposed changes in the current Brazilian Forest Code can lead to the reduction of native vegetation (forests, grasslands and wetlands) impacting directly many bird species. In Brazil, 17 globally threatened species are dependent of riverine forests and eight of these are restricted to the Brazilian territory. A decrease in the width of the area that should be protected as Permanent Preservation Areas (Área de Preservação Permanente -APP) can lead to significant population losses that would put at risk the integrity of populations and, in some cases, the survival of species. In fragmented landscapes, the APPs function as corridors, allowing the dispersion of birds through the matrix. Legal Reserve (Reserva Legal) areas should be maintained complementary to APPs, as the avifauna composition varies in areas located near and far from water bodies. Environmental heterogeneity is crucial to the maintenance of the bird community integrity. Even small patches of forest are important to the avifauna, working as stepping stones that, like the corridors, enable forest birds to move across the landscape. Birds are important predators, dispersers, and pollinators in agricultural ecosystems: in the Tropical region, areas with high bird diversity are significantly correlated with the highest rates of arthropods' removal, including those considered pests. Thus, proposed changes in the current Forest Code may represent a negative impact not only in relation to biodiversity, but also in regarding the agricultural production. Resumo: As mudanças propostas no atual Código Florestal Brasileiro poderão levar a um aumento de desmatamentos e consequente diminuição de cobertura vegetal nativa (florestas, campos e banhados) que impactarão diretamente muitas espécies de aves. No Brasil, 17 espécies de aves globalmente ameaçadas são dependentes de florestas próximas a corpos d'água, sendo que oito destas só ocorrem em território brasileiro. Considerando os requisitos ecológicos dessas espécies, é possível prever que uma diminuição na largura da faixa que deve ser protegida na forma de Área de Preservação Permanente (APP) levará a perdas populacionais significativas que podem colocar em risco a sobrevivência das populações e, consequentemente, da espécie como um todo. Em paisagens fragmentadas essas APPs também funcionam como corredores, permitindo a dispersão das aves através da matriz. Do mesmo modo, áreas de Reserva Legal devem ser mantidas de forma complementar às APPs, já que a composição da avifauna varia entre as áreas de vegetação nativa situadas próximas e distantes de corpos d'água. A heterogeneidade ambiental é crucial para a manutenção da integridade das comunidades de aves. Mesmo pequenas manchas de floresta são importantes para a avifauna, funcionando como "trampolins ecológicos" que, assim como os corredores, possibilitam que aves florestais se desloquem através da paisagem. As aves são importantes predadoras, dispersoras e polinizadoras em agroecossistemas sendo que em áreas tropicais já foi demonstrado que uma mai...

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Pest reduction services by birds in shade and sun coffee in Jamaica

Cited by 144 publications

References 35 publications

Quantifying pest control services by birds and ants in Kenyan coffee farms

Quantifying pest control services by birds and ants in Kenyan coffee farms

Targeting perennial vegetation in agricultural landscapes for enhancing ecosystem services

Impactos potenciais na avifauna decorrentes das alterações propostas para o Código Florestal Brasileiro

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