Plant-pollinator interactions in Crambe abyssinicaHochst. (Brassicaceae) associated with environmental variables

Simioni, Lívia C.; Mussury, Rosilda Mara; Mauad, Munir; Dresh, Daiane Mugnol; Pereira, Fabrício Fagundes; Scalon, Silvana de Paula Quintão

doi:10.1590/0001-3765201520130365

Cited by 6 publications

(8 citation statements)

References 25 publications

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“…All types of honeybee activity were explained by the weather recorded conditions while only bumblebee pollen collection was related to the weather. Our predictions substantiate other findings which show honeybees become more active as temperature increases and reduce flight activity with rising relative humidity and wind speeds (Benedek 1976;Gebremedhn, Tadesse & Belay 2014;Simioni et al 2015).…”

Section: General Resultssupporting

confidence: 90%

Responses in honeybee and bumblebee activity to changes in weather conditions

Karbassioon

Yearsley

Dirilgen

et al. 2022

Preprint

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Insect pollination by both managed and unmanaged bees is a highly valued ecosystem service that ensures plant reproduction and the production of high-quality crops. Bee activity is known to be influenced by the weather, and as the global climate continues to change, the flying frequency and foraging behaviour of bees may also change. To maximize the benefits of pollination in a changing world we must first understand how current weather conditions influence the activity of both unmanaged and managed bees. This is of particular interest in a country such as Ireland where inclement weather conditions are nominally sub-optimal for foraging. We observed honeybee (Apis mellifera; largely managed) and buff-tailed bumblebee (Bombus terrestris; largely unmanaged) colonies across a variety of weather conditions within seven apple orchards to determine how four weather variables (temperature, relative humidity, solar radiation, wind) influence the flight activity of each species. Our results indicate bumblebees could compensate for low honeybee activity in inclement conditions, which supports the theory that pollinator diversity provides resilience. This may be particularly important in management of pollinators in crops that flower in the spring when weather is more variable. We found pollen-foraging individuals in both species increase with temperature, but this rate decreases with humidity. On the whole honeybees are more sensitive to changes in weather than bumblebees and could be more predisposed to changes in future within-day weather conditions.

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Section: General Resultssupporting

confidence: 90%

Responses in honeybee and bumblebee activity to changes in weather conditions

Karbassioon

Yearsley

Dirilgen

et al. 2022

Preprint

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“…These results were higher than the profitability index obtained by Tarsinato et al (2016) in the production of sunflower in Mato Grosso, whose profitability index was 12.85%. It is worth mentioning that, in addition to the technical and economic feasibility of the production of achenes obtained in this study, the cultivation of the sunflower makes it possible to increase income in family farms in this Brazilian geographic region, making possible the production of honey (SIMIONI et al, 2015), viabilizing of animal production, in the partial replacement of protein supplementation of soybeans for sunflower meal (JUNQUEIRA et al, 2010;OLIVEIRA et al, 2016), as well as being used as crop in rotation and succession in melon and other crop production areas, recycling nutrients from deeper layers of soil, improving soil quality, reducing the idleness of agricultural areas between crops and increasing per capita income of farmers.…”

Section: Resultsmentioning

confidence: 92%

Economic indicators of nitrogen fertilization in sunflower cultivars

Souza¹,

Souza

Tartaglia

et al. 2020

Biosci. J.

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Sunflower is one of the most important oilseeds in the world. However, cultivation in semi-arid regions requires analysis of production costs and profitability, ensuring effective decision-making, focused on farming procedures and techniques. In two agricultural crops, 2016 and 2017, experiments were conducted to evaluate the economic indicators of sunflower cultivars (‘Aguará 06’, ‘Altis 99’, ‘Multissol’ and ‘BRS 122’) submitted to nitrogen (N) doses (0; 30; 60; 90 and 120 kg ha-1) via fertirrigation under semi-arid conditions. The net margin corresponded to the increase of N doses, reaching a maximum net margin in the 2016 harvest of R$ 366.89 ha-1 at the dose of 81 kg ha-1 of N for ‘BRS 122’; R$ 577.41 ha-1 with 118 kg ha-1 of N for ‘Multissol’; and for ‘Aguará 06’ (R$ 2,124.00 ha-1) and ‘Altis 99’ (R$ 976.66 ha-1) at the dose of 120 kg ha-1 of N. In the 2017 harvest, ‘BRS 122’ obtained R$ 190.90 ha-1 in the dose of 83 kg ha-1 of N and ‘Multissol’ reached R$ 657.50 in the dose of 85 kg ha-1 of N; the cultivars ‘Aguará 06’ (R$ 1,078.00 ha-1) and ‘Altis 99’ (R$ 957.14 ha-1) in the dose of 120 kg ha-1 of N. The rate of return and the profitability index were positive for all cultivars in both crops.

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“…Goulson et al [ 4 ] proposed measures such as preventing competition between neighboring honeybee colonies, decreasing prophylactic use of aggressive anti-parasite and pathogen treatments, and avoiding fragmented habitats, which can ensure high flower diversity in the bee diet. Those authors [ 4 ] and others [ 33 ] also recommended various methods to reduce colony exposure to agrochemicals: extending distance to crops, shortening monofloral periods, evaluating synergistic effects between pesticides used inside and outside the hive, and implementing controls on the movement of all commercial bees. All these measures would help reduce chronic exposure of bees to numerous stressors, and they would improve the availability of nutritional resources.…”

Section: Resultsmentioning

confidence: 99%

“…ceranae [ 32 ] and with immunosuppression that promotes viral replication [ 29 ]. Adverse climate conditions can strongly influence honey bee activity and resistance to pathogens [ 33 ]. In addition, temperature influences the Nosema biological cycle [ 34 ]; the greater temperature resistance of N .…”

Section: Introductionmentioning

confidence: 99%

Importance of Ecological Factors and Colony Handling for Optimizing Health Status of Apiaries in Mediterranean Ecosystems

Asensio¹,

Vicente-Rubiano

Muñoz³

et al. 2016

PLoS ONE

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We analyzed six apiaries in several natural environments with a Mediterranean ecosystem in Madrid, central Spain, in order to understand how landscape and management characteristics may influence apiary health and bee production in the long term. We focused on five criteria (habitat quality, landscape heterogeneity, climate, management and health), as well as 30 subcriteria, and we used the analytic hierarchy process (AHP) to rank them according to relevance. Habitat quality proved to have the highest relevance, followed by beehive management. Within habitat quality, the following subcriteria proved to be most relevant: orographic diversity, elevation range and important plant species located 1.5 km from the apiary. The most important subcriteria under beehive management were honey production, movement of the apiary to a location with a higher altitude and wax renewal. Temperature was the most important subcriterion under climate, while pathogen and Varroa loads were the most significant under health. Two of the six apiaries showed the best values in the AHP analysis and showed annual honey production of 70 and 28 kg/colony. This high productivity was due primarily to high elevation range and high orographic diversity, which favored high habitat quality. In addition, one of these apiaries showed the best value for beehive management, while the other showed the best value for health, reflected in the low pathogen load and low average number of viruses. These results highlight the importance of environmental factors and good sanitary practices to maximize apiary health and honey productivity.

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Plant-pollinator interactions in Crambe abyssinicaHochst. (Brassicaceae) associated with environmental variables

Cited by 6 publications

References 25 publications

Responses in honeybee and bumblebee activity to changes in weather conditions

Responses in honeybee and bumblebee activity to changes in weather conditions

Economic indicators of nitrogen fertilization in sunflower cultivars

Importance of Ecological Factors and Colony Handling for Optimizing Health Status of Apiaries in Mediterranean Ecosystems

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