Category Archives: Bees

IUCN Bumblebee Specialist Group annual report 2015

What I learned at the Bumblebee Working Group Meeting

20160330_171209 Earlier this week I attended the Bumblebee Working Group Meeting at the University of Sussex, a one day event that takes place every two or three years. It was a very stimulating day with some really interesting work being showcased; here are some examples of things that I learned that day, some questions that these findings have prompted (and the people presenting):

High arctic/montane bumblebees have undergone (and survived) periods of severe climate change in the past – does this mean they are less sensitive than temperate species to future climate change? (Paul Williams).
Bumblebees foraging closer to honey bee apiaries are more likely to be infected with a range of bee diseases – presumably picked up from the honey bees, but what is the route of transmission? (Samantha Alger).
Queen Buff-tailed Bumblebees exposed to neonicotinoid pesticides have a 26% reduction in the probability of founding a colony, and the effects vary for other species – are the most sensitive species the ones that have declined the most since the mid-90s? (Gemma Baron).
Simulating bumblebee colony dynamics with the Bumble BeeHave model is producing comparable results to field data on male and queen production (Matthias Becher).
Environmental Stewardship Schemes appear to enhance bee nest densities on farms where they are situated – but are some species already at saturation point on those farms? (Tom Wood).
New, tougher EU guidelines for risk assessment of effects of pesticides on bees have been developed and are being tested at the moment (James Cresswell).
The annual spread of the Tree Bumblebee, Britain’s newest bumblebee species, is about 35km per year (Liam Crowther).
The equivalent of 737,914 bramble flowers are needed to provide the resources support a single colony of Buff-tailed Bumblebees for one year (Ellie Rotheray).
The moratorium on neonicotinoids seems to have had the desired effect of reducing the amount of these pesticides being taken up by bumblebee colonies in pollen and nectar (Beth Nicholls).
There have been significant range extensions of some of our rarer bumblebee species in Essex over the last 15 years or so – has this also been happening in other counties? (Ted Benton).
Sites with greater levels of radioactive contamination at Chernobyl have fewer older bees – does this mean that the radiation is affecting their lifespans? (Katherine Raines).
Buglife’s B-Lines project continues to develop and gain momentum (Laurie Jackson).
The Short-haired Bumblebee reintroduction project has recorded workers every year since 2013. However there have also been reintroductions of queens from Sweden every year – so are the queens surviving over-winter and founding new colonies? Or are the workers just from the new queens each year? (Nikki Gammans).

Thanks to all the speakers, it was a great meeting, and special thanks for Dave Goulson for his hospitality and for organising the event.

A number of people were tweeting from the event using the hashtag #BBWG16 – follow the link for more comments and some images, including a couple of yours truly in action – one of which I’ve stolen (below).

Jeff at BBWG 2016

“Progress in pollination and pollinator research” meeting – University of Reading – 20th April

Special issue of Leaf Litter devoted to pollinators

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Leaf Litter

A short while ago I was interviewed by an American journalist as part of a special issue of the online newsletter Leaf Litter devoted to pollinators. Produced by a conservation planning and ecological restoration organisation called Biohabitats, this special issue includes:

» Thoughts on Pollinators
» Expert Q&A: Jeff Ollerton
» Expert Q&A: Jerome Rozen
» Expert Q&A: Eugenie Regan
» Inspiration: Promising Progress With Pollinator Habitat
» Non-Profit Spotlight: The Xerces Society
» Video: An ecological planner walks into a cider mill…
» How Saving Pollinators Can Save Water and Fish Resources
» Biohabitats Projects, Places, and People

Here’s a link to Leaf Litter.

Urban Pollinator Knowledge Exchange summary – Bristol 22nd February

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P1110838 The importance of urban environments for supporting pollinator populations is a topic that I’ve covered several times on the blog, for example: “Urban pollinators for urban agriculture” and “Urban bee diversity – a new study“. It’s a subject that’s generating a lot of interest at the moment with some really exciting research being published and conservation practice taking place. However there’s clearly a lot to do if we are really to understand where pollinators are distributed across out townscapes, and how we can best manage urban habitats to support this diversity and increase their numbers – here’s a link to an interesting round table discussion on this very topic.

Recently I was invited to take part in a workshop event co-organised by Defra, NERC, and Dr Kath Baldock from Bristol University entitled: Knowledge Exchange: urban grassland management and creating space for pollinators. As well as doing a short talk which contextualised the current scientific knowledge on urban pollinators, I facilitated one of the breakout discussion sessions.

The workshop was very well attended with some 50 delegates from a wide range of organisations, including local and national authorities, businesses, NGOs, and universities. Feedback from those delegates was generally positive and most people learned something about managing urban settings for pollinators, and made some useful connections. I certainly learned a lot: it’s good to get out of academia sometimes and talk with practitioners.

If you follow this link you’ll find a PDF of the summary from the facilitated sessions, covering topics such as grassland and verge management, the urban edgeland, innovative projects, and green infrastructure.

Over at the Bumblebee Conservation Trust’s blog, Sam Page has a very nice summary of the whole day which is also worth reading: Trials and tribulations of managing urban grasslands for pollinators.

Many thanks to all of the organisers for their work in putting on this event.

Bumblebee Working Group meeting – University of Sussex – 30th March

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Bombus hypnorum

It’s been three years since the last meeting of the semi-formal Bumblebee Working Group, which I hosted at the University of Northampton, and British Bombus researchers are eagerly looking forward to the next one which is being organised by Professor Dave Goulson at the University of Sussex on 30th March. There is no charge and if anyone with an interest in bumblebees wishes to attend, please contact Dave.

Here’s the programme for the day, which starts at 10am and finishes at 4.30pm:

Goulson, Dave – Welcome

Williams, Paul – Bumblebees of extreme environments

Alger, Samantha – RNA viruses in Vermont bumblebees

COFFEE BREAK

Baron, Gemma – Impacts of a neonicotinoid pesticide on colony founding bumblebee queens

Becher, Matthias Bumble – BEEHAVE: using bumblebee colony models as a conservation management tool in agricultural landscapes

Breeze, Tom – Knowledge gaps for effectively valuing pollination services

Cresswell, James – New European Union protocols for testing the toxicological impacts of agro-chemicals on bees

Crowther, Liam – Inferring invertebrate dispersal distances from biological records

LUNCH

Rotheray, Ellie – Quantification of the floral landscape in agro-ecosystems and its effect on bumblebee colonies

Nicholls, Beth – Pesticides in rural and urban bumblebee nests

Benton, Ted – Status of the BAP carders in Essex

Ollerton, Jeff – Exceptional urban nest density of the Tree Bumblebee Bombus hypnorum during summer 2014

SHORT BREAK

Raine, Katherine – Chernobyl bumblebees: Understanding fitness consequences of living in the exclusion zone

Jackson, Laurie – B-lines

Gammans, Nikki – An update on the progress of reintroducing the short-haired bumblebee, Bombus subterraneus

Pollinators, Pollination and Food Production: IPBES gains momentum

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Bee on apple blossom - 1st May 2015

The over-arching themes of this blog have been about understanding biodiversity; the science behind its study; why it’s important; how it contributes to human well being, (including both intangible and economic benefits); and how policy informed by science can support the conservation of species and ecosystems. These are all issues that have a global perspective beyond the bounds of my home country (the United Kingdom), or even my continent (Europe) because species, ecosystems and the threats to them do not respect political borders.

Enter IPBES – the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (sometimes shortened to Intergovernmental Platform on Biodiversity and Ecosystem Services).

IPBES is a United Nations body established in 2012 that in many ways is a parallel entity to the IPCC ( Intergovernmental Panel on Climate Change), bringing together scientists, policy makers and stakeholders, with a mission:

“to strengthen the science-policy interface for biodiversity and ecosystem services for the conservation and sustainable use of biodiversity, long-term human well-being and sustainable development“

Which has got to be a good thing: science informing policy, what’s not to like?

The first output from IPBES will be a Thematic Assessment of Pollinators, Pollination and Food Production, and it’s just been discussed (today) at the 4th Plenary meeting of IPBES in Kuala Lumpur – here’s a link to the press release.

In the coming weeks I’ll talk more about IPBES and its Thematic Assessment (for which I acted as a reviewer), but for now I’ll just repeat some of the headline figures from the report:

20,000 – Number of species of wild bees. There are also some species of butterflies, moths, wasps, beetles, birds, bats and other vertebrates that contribute to pollination.
75% – Percentage of the world’s food crops that depend at least in part on pollination.
US$235 billion–US$577 billion – Annual value of global crops directly affected by pollinators.
300% — Increase in volume of agricultural production dependent on animal pollination in the past 50 years.
Almost 90% — Percentage of wild flowering plants that depend to some extent on animal pollination*.
1.6 million tonnes – Annual honey production from the western honeybee.
16.5% — Percentage of vertebrate pollinators threatened with extinction globally.
+40% – Percentage of invertebrate pollinator species – particularly bees and butterflies – facing extinction.

*They are quoting a figure that I calculated, and very proud of it I am too 🙂

Pollinators and pollination – something for the weekend #9

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The latest in an (ir)regular series of posts to biodiversity-related* items that have caught my attention during the past few weeks; this one’s focused on pollinators and pollination because there’s been so much emerging on this recently it’s been impossible to decide what to write more fully about!

In “Disentangling visual and olfactory signals in mushroom-mimicking Dracula orchids using realistic three-dimensional printed flowers” in the journal New Phytologist, Tobias Policha and colleagues have used artificial, 3D printed flowers to assess the relative importance of scent versus colour/shape in some fly pollinated orchid species. Yes, Dracula is a real genus!
In the journal Nature, Mathilde Baude and colleagues have looked at how nectar resources have changed in extent and composition over the 20th Century in a paper entitled “Historical nectar assessment reveals the fall and rise of floral resources in Britain“.
An important disease of honeybees, Deformed Wing Virus (DWV) is “driven by trade and movement of honeybee colonies” according to a new study in Science by Lena Wilfert and colleagues, “Deformed wing virus is a recent global epidemic in honeybees driven by Varroa mites“, further emphasising what many of us have been saying, that reduction in honeybee numbers is largely a veterinary/husbandry problem, rather than a conservation issue.
Some of my colleagues in Denmark and Brazil (amongst other countries) continue their exploration of the ecology and evolution of hummingbird-plant interaction networks with a new paper in Proceedings of the Royal Society B entitled “High proportion of smaller ranged hummingbird species coincides with ecological specialization across the Americas“.
Also in Proceedings of the Royal Society B, Conrad Labandeira and (particularly Chinese) colleagues have documented some amazing similarities between extinct fossil lacewings and butterflies, in “The evolutionary convergence of mid-Mesozoic lacewings and Cenozoic butterflies“.
On the 20th May there’s going to be an exciting one-day symposium entitled “Bats, Bees, Birds, Butterflies and Bouquets: New Research in Pollination Biology” at the Smithsonian’s National Museum of Natural History in Washington D.C. Wish I could go!
Finally, the United Nations Food and Agriculture Organization (FAO) has a whole set of resources related to its Global Action on Pollination Services for Sustainable Agriculture programme, including a newly released “Protocol to detect and monitor pollinator communities: Guidance for practitioners” by Gretchen LeBuhn and colleagues. Worth exploring in detail. Something that’s unclear to me is the extent to which this aspect of the FAO’s work is going to be replaced or duplicated by the report (and presumably subsequent, follow-up work?) on pollinators and pollination that’s due this year from the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES), about which I hope to report in the near future.

Feel free to recommend links that have caught your eye.

*Disclaimer: may sometimes contain non-biodiversity-related items.

Protecting an ecosystem service: approaches to understanding and mitigating threats to wild insect pollinators

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Bee on apple blossom 2 - 1st May 2015 Back in April 2015 I attended a two day meeting at Imperial College’s Silwood Park campus to discuss initial project ideas to address evidence gaps in the recent National Pollinator Strategy. I mentioned the meeting in passing in a post at the time concerned with whether biodiversity scientists should also be campaigners, but didn’t say a lot about what conclusions we came to and what the next steps would be because at the time I was unclear on both of those counts: it was a very wide ranging meeting with a lot of participants coming at the question of pollinator conservation from different perspectives. As well as academics there were representatives from the agrochemical industry, government research organisations, and the National Farmers Union.

During summer 2015 one of the conveners of the meeting, Dr Richard Gill, ~~herded cats~~ organised colleagues, pulled together all of the text and ideas that were generated, and took on the task of seeing a summary of the meeting through from initial draft to publication. It was a monumental effort, involving 27 authors and 86 manuscript pages, and Richard did a sterling job. Entitled “Protecting an ecosystem service: approaches to understanding and mitigating threats to wild insect pollinators” it will appear as a chapter in the next volume of Advances in Ecological Research, which should be published later this month.

The abstract and contents for the chapter are below; if anyone wants a copy of the full chapter, please let me know.

Abstract

Insect pollination constitutes an ecosystem service of global importance, providing significant economic and aesthetic benefits as well as cultural value to human society, alongside vital ecological processes in terrestrial ecosystems. It is therefore important to understand how insect pollinator populations and communities respond to rapidly changing environments if we are to maintain healthy and effective pollinator services. This paper considers the importance of conserving pollinator diversity to maintain a suite of functional traits to provide a diverse set of pollinator services. We explore how we can better understand and mitigate the factors that threaten insect pollinator richness, placing our discussion within the context of populations in predominantly agricultural landscapes in addition to urban environments. We highlight a selection of important evidence gaps, with a number of complementary research steps that can be taken to better understand: i) the stability of pollinator communities in different landscapes in order to provide diverse pollinator services; ii) how we can study the drivers of population change to mitigate the effects and support stable sources of pollinator services; and, iii) how we can manage habitats in complex landscapes to support insect pollinators and provide sustainable pollinator services for the
future. We advocate a collaborative effort to gain higher quality abundance data to understand the stability of pollinator populations and predict future trends. In addition, for effective mitigation strategies to be adopted, researchers need to conduct rigorous field- testing of outcomes under different landscape settings, acknowledge the needs of end-users when developing research proposals and consider effective methods of knowledge transfer to ensure effective uptake of actions.

Contents
1. Importance of Insect Pollination
1.1 Providing an Ecosystem Service
1.2 Brief Introduction to Pollination Ecology and the Importance of Wild
Pollinators
2. Major Threats to the Pollination Service Provided by Insects
3. Steps in the Right Direction to Protect Insect Pollinator Services: Policy Actions
4. Understanding and Mitigating Specific Threats to Wild Insect Pollinators to Protect Pollinator Services
4.1 Understanding the Stability of Insect Pollinator Communities
4.2 Using Molecular Approaches to Monitor Insect Pollinators
4.3 How Do Parasites Shape Wild Insect Pollinator Populations?
4.4 Understanding Insect Pollinator Population Responses to Resource Availability
4.5 Engineering Flowering Field Margins as Habitats to Attract Insect Pollinators
4.6 How Might We Improve the Wider Countryside to Support Insect Pollinators
4.7 Insect Pollinators in Urban Areas
5. Considerations When Developing Future Research and Mitigation Strategies
Acknowledgements
Appendix
References

8 things I learned from the Parliamentary Pollinators Update seminar – UPDATED

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POST event December 2015

As I advertised a couple of weeks ago, last Wednesday I was in London to take part in a Pollinators Update seminar at the Houses of Parliament organised by the Parliamentary Office for Science and Technology (POST). It was a very interesting event and good to catch up with some of the latest ideas about pollinators and their conservation. However it’s been a busy week since then and I’ve not had time to post a full account of the seminar, which was attended by over 40 people. So I’ve decided to write a brief summary of eight things I learned that day from my fellow speakers* and from the day in general; in some cases I’ve linked to the original sources where available:

1. About 46% of Europe’s bumblebees have declining populations (see the European Red List for Bees that I highlighted in an earlier post)

2. Around 2% of the world’s bee species do 80% of the crop pollination (Kleijn et al. (2015) Nature Communications)

3. Pollinators other than bees perform 39% of the flower visits to crops (Rader et al. (2015) Proceedings of the National Academy of Sciences)

4. By 2100 the Red-tailed Bumblebee (Bombus lapidarius), one of the commonest species in Europe, may be extinct across most of the continent due to climate change (Rasmont et al. (2015) Climatic Risk and Distribution Atlas of European Bumblebees)

5. Only 6.6% of Entry Level Stewardship agreements by farmers across England included plans to grow nectar- and pollen-rich flower mixes.

6. Criticism of laboratory studies of the effects of neonicotinoid pesticides are just as illogical as criticisms of field studies: both have their limitations and advantages, and both are needed.

7. A panel of four experts on pollinators and pollination will largely agree about the answers to most questions an audience asks.

8. A Westminster seminar such as this will attract very few MPs if it clashes with an important debate in the House of Commons, in this case about future military action in Syria.

UPDATE: here’s a number 9 suggested by Simon Potts: we all strongly support and encourage the setup of an All Party Parliamentary Group on “Pollinators” not just “honeybees” or “bees”.

*With thanks to my fellow panelists Simon Potts, Claire Carvell and Richard Gill, and to Kirsten Miller and the POST team for organising the event, and for the photograph of the panel in action.