scholarly journals Bumble bee communities in power‐line clearings: Effects of experimental management practices

2020 ◽  
Author(s):  
Mari Steinert ◽  
Katrine Eldegard ◽  
Markus A. K. Sydenham ◽  
Stein R. Moe
Keyword(s):  
Management Practices ◽  
Power Line ◽  
Bumble Bee ◽  
Experimental Management ◽  
Bee Communities

scholarly journals The Effect of Urbanization on Bumble Bee Communities in Greater Philadelphia

2010 ◽  
Author(s):  
Rosemary Malfi ◽  
Neal Williams
Keyword(s):  
Bumble Bee ◽  
Bee Communities

scholarly journals The impacts of bioenergy pine plantation management practices on bee communities

2020 ◽  
Vol 57 (5) ◽  
pp. 952-962 ◽  
Author(s):  
Xingwen Loy ◽  
David Gruenewald ◽  
Isabel G. W. Gottlieb ◽  
Emily K. Dobbs ◽  
Andriana S. Miljanic ◽  
...  
Keyword(s):  
Management Practices ◽  
Pine Plantation ◽  
Plantation Management ◽  
Bee Communities

LANDSCAPE STRUCTURE AND BUMBLE BEE COMMUNITIES

2001 ◽  
pp. 159-163 ◽  
Author(s):  
MARIKA Mänd ◽  
KALEV Sepp ◽  
JAAK Truu
Keyword(s):  
Landscape Structure ◽  
Bumble Bee ◽  
Bee Communities

Patterns of population genetic structure and diversity across bumble bee communities in the Pacific Northwest

2017 ◽  
Vol 18 (3) ◽  
pp. 507-520 ◽  
Author(s):  
Jonathan B. Koch ◽  
Chris Looney ◽  
Walter S. Sheppard ◽  
James P. Strange
Keyword(s):  
Genetic Structure ◽  
Pacific Northwest ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Bumble Bee ◽  
The Pacific ◽  
Genetic Structure And Diversity ◽  
Bee Communities

Perceptions of wild bees and farm characteristics associated with the uptake of pollinator-supporting land management practices among Canadian apple growers

2020 ◽  
pp. 1-10
Author(s):  
Rachel A. Nalepa ◽  
Graham Epstein ◽  
Jeremy Pittman ◽  
Sheila R. Colla
Keyword(s):  
Land Management ◽  
Management Practices ◽  
Descriptive Analysis ◽  
Management Strategies ◽  
Wild Bees ◽  
Pollination Services ◽  
Wild Bee ◽  
Policies And Programs ◽  
Bee Communities ◽  
Perceived Costs

Abstract Pollination services are critical for food production. Although domesticated honey bees are important pollinators in agriculture, there is growing interest in supporting naturally occurring wild bees. Diversifying pollination management strategies by encouraging healthy wild bee communities may be especially useful for growers of insect-pollinated crops, such as apples. Although research has identified several land management practices that can enhance local pollinator communities on farms, there are few studies on the factors that influence growers to adopt pollinator-supporting actions on their land. Here, we surveyed 75 Canadian apple growers and used regression models to explore the influence of farm characteristics and perceptions about bees on the likelihood of adopting 15 unique pollinator-supporting practices. We also provide a descriptive analysis of growers' pollination management practices and self-assessed resourcefulness on the ability to improve habitat for wild pollinators on the farm. We found that an increase in three variables: awareness of wild bees, perception of the severity of threats facing wild populations, and the perception of the benefits provided by wild bees is associated with more pollinator-supporting practices on the farm. Overall, growers were less likely to adopt pollinator-friendly practices as the fraction of rented land increased and as the perceived costs of implementing these practices rose. We found ‘low-hanging fruit’ (i.e., pollinator-supporting practices that could be easily and inexpensively implemented) were adopted by less than one-third of growers and that the majority of those surveyed had little to no knowledge on what actions to take if they wanted to improve their farms for wild bees or where to go for that knowledge. Our results suggest that policies and programs that focus on raising grower awareness of wild bees, increasing grower perception of their benefits, and reducing the perceived costs of implementing pollinator-supporting practices may positively affect their uptake. A deeper understanding of grower perceptions will provide essential insight into how growers may contribute to wild pollinator conservation while potentially increasing agricultural production and reducing vulnerability borne of heavy reliance on managed pollinators.

scholarly journals The Effect of Urbanization on Bumble Bee Communities in Greater Philadelphia

2010 ◽  
Author(s):  
Rosemary Malfi ◽  
Neal Williams
Keyword(s):  
Bumble Bee ◽  
Bee Communities

scholarly journals The distribution and population dynamics of the honey bee pathogens Crithidia mellificae and Lotmaria passim in New Zealand

2021 ◽  
Author(s):  
◽  
Tammy Leigh Waters
Keyword(s):  
Population Dynamics ◽  
New Zealand ◽  
Honey Bee ◽  
Management Practices ◽  
Bumble Bee ◽  
Strong Positive Correlation ◽  
Colony Losses ◽  
Positive Correlation ◽  
Bee Colonies ◽  
Lotmaria Passim

<p>The honey bee Apis mellifera is experiencing colony losses across the world, this is not the first time in history colony losses have been reported. New molecular detection methods such as real-time PCR allow the detection and analysis of pathogens present in colonies, quickly and reliably.  Of the pathogens that the honey bee is host to, trypanosomes are one of the least understood and trypanosome interactions within the honey bee host remain largely unknown. Using the bumble bee as a model for this host-parasite relationship. The trypanosome C. bombi is known to cause a reduced ability to gain nutrients from food and an overall decrease in efficiency of queens in founding colonies in spring. These negative correlations are significant enough in the bumble bee to warrant investigation into trypanosomes in the honey bee.  The trypanosome C. mellificae was first described in the honey bee in 1967. A screening study in 2009 included a test for and detected the trypanosome in modern honey bee samples. In 2013 C. mellificae was identified as a contributory factor to overwintering colony losses when co-infected with N. ceranae. Following studies detected trypanosomes and led to the characterisation of a new species, L. passim in 2013. Lotmaria passim was first detected in New Zealand in 2014 however no subsequent studies had been undertaken to identify the distribution and dynamics of trypanosomes in New Zealand honey bee colonies.  My goal in this study was to identify the presence of trypanosomes in New Zealand. In an overview study of 47 honey bee colonies from across New Zealand, 46 were positive for the L. passim species. Identified by sequencing of the GAPDH gene. A yearlong study of 15 colonies revealed that the infection rate of L. passim was consistent throughout the year and very low genetic variation was detected. Lotmaria passim was detected in all parts of New Zealand sampled in this study and often in high levels. A positive correlation was detected when L. passim was present in addition to N. apis. There was no detection of C. mellificae in my study. The lack of detection of C. mellificae may suggest that the species is not present, or that it is in such low levels it cannot yet be detected.  In parallel to this trypanosome study two Nosema spp. and DWV were also examined. Nosema apis was found to be more prevalent than N. ceranae, which was not present in any South Island samples. A strong positive correlation was detected between the two Nosema spp. DWV showed a high level of variation likely a reflection of differing Varroa management practices in apiaries in this study.  This study of trypanosomes is the first of its kind in New Zealand identifying the presence and population dynamics of L. passim. This in conjunction with data on Nosema spp. and DWV will be of value to the New Zealand apiculture industry and contribute to global honey bee health studies.</p>

scholarly journals Wildness and Wild Spaces in Residential Yards: Changing Neighborhood Norms to Support Pollinator Populations

2021 ◽  
Vol 13 (22) ◽  
pp. 12861
Author(s):  
Andrea K. Burr ◽  
Damon M. Hall ◽  
Nicole Schaeg
Keyword(s):  
Management Practices ◽  
Urban Habitat ◽  
Cultural Preferences ◽  
Insect Pollinator ◽  
Native Bee ◽  
Residential Yards ◽  
Bee Communities ◽  
Yard Maintenance ◽  
Global Food ◽  
Pollinator Populations

Insect pollinator populations, critical to the global food supply, are declining. Research has found robust bee communities in cities, which are supported by diverse urban habitat and foraging resources. Accounting for 35–50% of urban green space, U.S. private residential yards can serve as important forage and nesting sources for pollinators. Incorporating wild attributes and wildness, such as native vegetation and less intensive yard-management practices, is key. However, urban vegetation, and its effects on local native bee populations, is shaped by social and cultural preferences, norms, aesthetics, values, and identities. The perfect lawn ideal of a highly manicured turfgrass yard dominates neighborhood landscapes and is often at odds with the habitat needs of pollinators. As part of a three-year study investigating the sociocultural drivers of residential vegetation choices in St. Louis, MO, USA, we interviewed 85 decisionmakers in order to understand choices about private residential yard maintenance. This paper presents an emergent finding concerning how residents conceptualize and talk about the urban-yard aesthetic, using the terms "wild" and "wildness", which reflect a range of levels in the demand for urban wild spaces in their neighborhoods. The discourse of wildness offers a nontechnical route for understanding the connections between the ecological consequences of urbanization, with human attitudes towards nature that shape the biological functioning of human-generated habitats.

scholarly journals Grassland irrigation and fertilisation alter vegetation height and vegetation within temperature and negatively affect orthopteran populations

2020 ◽  
Author(s):  
Jean-Yves Humbert ◽  
Sarah Delley ◽  
Raphaël Arlettaz
Keyword(s):  
Species Richness ◽  
Management Practices ◽  
Negative Impact ◽  
Vegetation Height ◽  
European Mountain ◽  
Mountain Meadows ◽  
Intensively Managed ◽  
Experimental Management ◽  
Underlying Mechanisms ◽  
Full Factorial

AbstractEuropean mountain meadows are hosting an exceptionally rich biodiversity. While they have long been exposed to land abandonment, they are nowadays additionally threatened by agriculture intensification through aerial irrigation and slurry application. The consequences of this intensification on arthropods are not well documented and studies are needed to fulfil this knowledge gap. Six experimental management treatments combining a full factorial design and a gradual level of fertilisation and irrigation were implemented in 2010 in twelve different montane and subalpine Swiss meadows. In 2013, orthopterans were sampled to assess the influence of the management practices on their population. In addition changes in vegetation height and temperature induced by intensification were recorded in order to better appraise underlying mechanisms. Intensification had a negative impact on Caelifera (grasshoppers); with decreases of up to 70% in densities and 50% in species richness in the most intensively managed treatment plots. In parallel intensification induced an increase in mean vegetation height and a cooling of up to 4.2 °C (10 cm aboveground) within most intensively managed plots. These microhabitat and microclimate changes are likely to have affected Caelifera development, in particular thermophilous species. In contrast, Ensifera (bush crickets) densities and species richness did not respond to the management treatments. The use of irrigation (without fertilisation) had limited impacts on orthopterans and microclimate. In conclusion, orthopterans, in particular Caelifera, are relatively sensitive to grassland intensification and to conserve the full community, mountain agricultural systems need to maintain extensively managed meadows.

scholarly journals The distribution and population dynamics of the honey bee pathogens Crithidia mellificae and Lotmaria passim in New Zealand

2021 ◽  
Author(s):  
◽  
Tammy Leigh Waters
Keyword(s):  
Population Dynamics ◽  
New Zealand ◽  
Honey Bee ◽  
Management Practices ◽  
Bumble Bee ◽  
Strong Positive Correlation ◽  
Colony Losses ◽  
Positive Correlation ◽  
Bee Colonies ◽  
Lotmaria Passim

<p>The honey bee Apis mellifera is experiencing colony losses across the world, this is not the first time in history colony losses have been reported. New molecular detection methods such as real-time PCR allow the detection and analysis of pathogens present in colonies, quickly and reliably.  Of the pathogens that the honey bee is host to, trypanosomes are one of the least understood and trypanosome interactions within the honey bee host remain largely unknown. Using the bumble bee as a model for this host-parasite relationship. The trypanosome C. bombi is known to cause a reduced ability to gain nutrients from food and an overall decrease in efficiency of queens in founding colonies in spring. These negative correlations are significant enough in the bumble bee to warrant investigation into trypanosomes in the honey bee.  The trypanosome C. mellificae was first described in the honey bee in 1967. A screening study in 2009 included a test for and detected the trypanosome in modern honey bee samples. In 2013 C. mellificae was identified as a contributory factor to overwintering colony losses when co-infected with N. ceranae. Following studies detected trypanosomes and led to the characterisation of a new species, L. passim in 2013. Lotmaria passim was first detected in New Zealand in 2014 however no subsequent studies had been undertaken to identify the distribution and dynamics of trypanosomes in New Zealand honey bee colonies.  My goal in this study was to identify the presence of trypanosomes in New Zealand. In an overview study of 47 honey bee colonies from across New Zealand, 46 were positive for the L. passim species. Identified by sequencing of the GAPDH gene. A yearlong study of 15 colonies revealed that the infection rate of L. passim was consistent throughout the year and very low genetic variation was detected. Lotmaria passim was detected in all parts of New Zealand sampled in this study and often in high levels. A positive correlation was detected when L. passim was present in addition to N. apis. There was no detection of C. mellificae in my study. The lack of detection of C. mellificae may suggest that the species is not present, or that it is in such low levels it cannot yet be detected.  In parallel to this trypanosome study two Nosema spp. and DWV were also examined. Nosema apis was found to be more prevalent than N. ceranae, which was not present in any South Island samples. A strong positive correlation was detected between the two Nosema spp. DWV showed a high level of variation likely a reflection of differing Varroa management practices in apiaries in this study.  This study of trypanosomes is the first of its kind in New Zealand identifying the presence and population dynamics of L. passim. This in conjunction with data on Nosema spp. and DWV will be of value to the New Zealand apiculture industry and contribute to global honey bee health studies.</p>

Sign in / Sign up

Export Citation Format

Share Document