The Optimal Supply of Crop Pollination and Honey From Wild and Managed Bees: An Analytical Framework for Diverse Socio-Economic and Ecological Settings

Narjes, Manuel; Lippert, Christian

doi:10.1016/j.ecolecon.2018.11.018

Cited by 18 publications

(8 citation statements)

References 54 publications

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“…In addition, we found that beekeepers in Chiang Mai province often pay longan farmers a fee to let their colonies forage longan nectar on their farms, consistent with some other studies (Narjes & Lippert, 2019). Interestingly, Narjes and Lippert (2019) predicted that the farmers will allow beekeepers to place bee hives for free for optimum pollination services, but that beekeepers are required to pay farmers for exclusive right to floral resource if beekeepers add more hives, as excessive visits can be bad for production. However, if many farmers adopted off‐season management with honeybees, this would shift supply and demand such that beekeepers might instead charge for use of their bees, depleting the profits of practicing off‐season longan with managed honeybees.…”

Section: Discussionsupporting

confidence: 91%

Insufficient native pollinators during artificially induced early flowering decrease yield and long‐term economic viability of a tropical fruit crop

Sritongchuay

Wayo

Orr

et al. 2020

Journal of Applied Ecology

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The management of crops outside the regular cropping calendar can improve profits when supply is low and prices are high, but we do not know how induced, early flowering impacts the pollination services that crops require. This study examines the effects of flowering time and pollinator management, including managed honeybee colonies and ground flower cover, on the pollination of the tropical fruit tree, longan (Dimocarpus longan Lour.), comparing between in‐season flowering (naturally) and off‐season flowering (chemically induced) in Northern Thailand. Visitation rates of flower visitor groups significantly differed among treatments: for in‐season flowering, wild bees were the most frequent pollinator group, whereas in the off‐season flowering, there were no wild bees, and instead dipterans were the most frequent pollinator group. Some off‐season plantations have honeybee hives present and in this situation honeybees were the most frequent pollinator group. We show that temporal variation in the pollinator community significantly alters the pollination efficiency of longan crops. Consequently, longan production from off‐season longan farms generates lower net profit in the absence of managed bees and wild bees, and wild bees produced higher seed‐sets than either honeybees or dipterans. Synthesis and applications. Wild bees were the main pollinator group of longan in the in‐season flowering resulting in high fruit production; whereas in the off‐season flowering honeybees and dipterans were the main pollinator group. Longan production from off‐season longan farms without managed bee produced less net profit. The farmers practicing off‐season with honeybee hives management gain the largest net profit. Developing mechanisms to promote and maintain pollinator abundance and diversity is likely to increase the resilience of the system in addition to profit in the long term; thus, efforts should be made to provide more nesting habitat and reduce pesticide use.

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Section: Discussionsupporting

confidence: 91%

Insufficient native pollinators during artificially induced early flowering decrease yield and long‐term economic viability of a tropical fruit crop

Sritongchuay

Wayo

Orr

et al. 2020

Journal of Applied Ecology

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“…As this special issue highlights, veterinary science is increasingly required to engage with honeybee health. Adopting an interdisciplinary approach both for practical animal health purposes like prescribing antibiotics for use in hives because they are food producing animals [9], for food security and because honeybees are an indicator species for the wider health of the environment [10,11]. Here we explore the potential for veterinary science to rise to the challenge of ongoing bee declines through the One-Health approach.…”

Section: Introductionmentioning

confidence: 99%

A One-Health Model for Reversing Honeybee (Apis mellifera L.) Decline

Donkersley

Elsner-Adams²,

Maderson

2020

Veterinary Sciences

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Global insect decline impacts ecosystem resilience; pollinators such as honeybees (Apis mellifera L.) have suffered extensive losses over the last decade, threatening food security. Research has focused discretely on in-hive threats (e.g., Nosema and Varroa destructor) and broader external causes of decline (e.g., agrochemicals, habitat loss). This has notably failed to translate into successful reversal of bee declines. Working at the interdisciplinary nexus of entomological, social and ecological research, we posit that veterinary research needs to adopt a “One-Health” approach to address the scope of crises facing pollinators. We demonstrate that reversing declines will require integration of hive-specific solutions, a reappraisal of engagement with the many stakeholders whose actions affect bee health, and recontextualising both of these within landscape scale efforts. Other publications within this special issue explore novel technologies, emergent diseases and management approaches; our aim is to place these within the “One-Health” context as a pathway to securing honeybee health. Governmental policy reform offers a particularly timely pathway to achieving this goal. Acknowledging that healthy honeybees need an interdisciplinary approach to their management will enhance the contributions of veterinary research in delivering systemic improvements in bee health.

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“…Native bee husbandry has gained popularity in the Eastern Thai provinces of Chanthaburi and Trat, where-some of the most widely cultivated fruit crops are rambutan (Nephelium lappaceum), mangosteen (Garcinia mangostana), durian (Durio zibethinus) and longan (Dimocarpus longan)-orchardists started managing stingless bees to compensate for past pollination deficits [6][7][8]. Moreover, in our 2013 survey in Chanthaburi, some respondents informed us that prior to finding this solution to the pollination deficit, some orchard farmers of the region had experimented with renting A. mellifera colonies from beekeepers.…”

Section: Context: Current Status Of Beekeeping and Pollination Services In Thailandmentioning

confidence: 99%

“…Moreover, in our 2013 survey in Chanthaburi, some respondents informed us that prior to finding this solution to the pollination deficit, some orchard farmers of the region had experimented with renting A. mellifera colonies from beekeepers. They preferred keeping stingless bees over honeybees due to their relatively simple maintenance and shorter flight range, which can protect them from possible contact with pesticides from neighboring farms [8]. Compared to the wide foraging range of honeybees (A. mellifera), typically reaching distances of 5 km [9], stingless bees have a considerably smaller flight radius: e.g.~600 m for the subgenus Trigona [10].…”

Section: Context: Current Status Of Beekeeping and Pollination Services In Thailandmentioning

confidence: 99%

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Regional differences in farmers’ preferences for a native bee conservation policy: The case of farming communities in Northern and Eastern Thailand

Narjes

Lippert

2021

PLoS ONE

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Evidence points to past bee-mediated crop pollination deficits in Chanthaburi province, Eastern Thailand. Conversely, no such evidence has yet been reported for Chiang Mai province (Northern Thailand), suggesting that wild pollination is delivered there above the requirements of local orchards. Discrete choice experiments (DCE) were conducted to elicit the preferences of pollinator-dependent orchard farmers with regard to three pollinator conservation measures and their possible effects on of native bee populations in each region. We fitted random parameter logit (RPL) models on the resulting data to capture preference heterogeneity and to obtain willingness to pay (WTP) point estimates. To test our results’ robustness, we also inspected for scale heterogeneity by fitting generalized mixed logit (GMXL) models on the pooled and individual datasets. This yielded WTP space estimates (i.e., directly from WTP distributions) and made possible the comparison of farmers’ preferences for a native bee conservation policy in both regions. The results hint at significant WTP differences for some of the conservation policy attributes between both provinces. Furthermore, unobserved contributions to choice seem to have been more random in Chiang Mai. Our analyses also suggest that farmers who engage in bee-related activities are WTP more for a conservation policy that includes bee husbandry.

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The Optimal Supply of Crop Pollination and Honey From Wild and Managed Bees: An Analytical Framework for Diverse Socio-Economic and Ecological Settings

Cited by 18 publications

References 54 publications

Insufficient native pollinators during artificially induced early flowering decrease yield and long‐term economic viability of a tropical fruit crop

Insufficient native pollinators during artificially induced early flowering decrease yield and long‐term economic viability of a tropical fruit crop

A One-Health Model for Reversing Honeybee (Apis mellifera L.) Decline

Regional differences in farmers’ preferences for a native bee conservation policy: The case of farming communities in Northern and Eastern Thailand

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