Pollination is a complex process. It’s not as easy as an insect simply visiting a flower.
This is important to remember when talking about which species are the ‘best’ or ‘most important’ pollinators. Simply observing an animal visiting a flower is not, on its own, evidence that the animal is pollinating the flower.
Many insects (and other animals) visit flowers, to feed on pollen, nectar or other flower parts. Many of these interactions result in pollination…although some visitors are better pollinators than others. Some of these visitors commit floral larceny – they are robbers or thieves (there’s a difference!) of either pollen or nectar, and they leave without pollinating. Some might even damage flower parts so much that they indirectly affect the flower’s capacity to be pollinated by other visitors.
To know for sure that an insect is pollinating a particular flower, we first need to know what kind of reproductive system that flower has. Is it male, female or bisexual (containing both male and female parts)? Can it self-pollinate, or does it need to be outcrossed to another flower or plant of the same species? Once we know this, we then need to watch the behaviour of the insect that visits that flower. Does the insect visit one flower and fly away, or many flowers in a row? Does it move between plants? Does it actually touch the reproductive parts of the flower when it visits each flower? Continue reading
My most-cited paper so far (although not really the most-cited when you take years of publication into account) is an entomological field methods paper. It was also an unplanned paper. It came out of my PhD data, but wasn’t one of my research questions.
Methods papers are great contributions to the literature, and I highly recommend PhD students consider writing one, especially if they are working on understudied systems, or find some interesting patterns during data collection. Methods papers have much broader application to diverse fields and sub-disciplines than the PhD results themselves might. Continue reading
My new paper has just been published in Insect Conservation & Diversity.
This has been the most enjoyable paper I’ve worked on, and I’m so excited it’s now online! It’s a systematic review of observations published in peer-reviewed literature of bee and syrphid fly species collecting pollen from wind-pollinated plants. I also cite some blog posts (see my previous post on this relationship) and discuss the importance of natural history.
The paper’s had a long development process (I presented some preliminary results at the Ecological Society of Australia conference last year) and a thorough peer review (3 revisions, 9 lots of comments and I think at least 6 individual reviewers) – thank you to Insect Conservation & Diversity and my wonderful reviewers for being so patient and helpful!
My review covered 1364 plant genera in 50 families. I looked at bee and syrphid fly species, because these are the most common pollinators in most environments globally. So this is not an ‘end of the road’ list; it’s a means to highlight how little we know about the ecology and life history of most insect pollinator species. Pollination systems of so many plant species are still undescribed, and life histories of so many insect pollinator species are still unknown…lots more basic natural history research is needed! Continue reading
Long-time readers of my blog know that I think natural history notes are one of the most important parts of the scientific literature! Sadly, very few journals will publish them.
Luckily the Ecological Society of America does appreciate the value of natural history observations. I first submitted this note to Frontiers in Ecology and Environment for their Natural History Notes series. Unfortunately, the Frontiers series was about to close and they weren’t taking any submissions. But the editor suggested I submit my note to Ecology, where they were just about to start a new series called The Scientific Naturalist. So here it is.
Unfortunately it’s not open access and doesn’t have an abstract. So I’ve written a shorter note about my short note below; please email me if you’d like a copy of the original. Continue reading
‘Avoid repetition’. Most scientists had this command drummed into their heads early in their career. Science writing should be devoid of repetitive words and sentences. I had to include a preface in my PhD thesis to warn examiners of impending repetition…because my thesis chapters were published/submitted studies from the same system and with somewhat similar sampling methods.
Sure, thoughtless repetition of words and sentences does not make enjoyable reading in any discipline. But repetition of ideas and concepts is essential to storytelling and building memories. So when it comes to science communication, repetition is key. Continue reading
Recently, a reviewer of one of my manuscripts requested that I change the term “pollinator insects” to “insect pollinators” throughout the manuscript, because the latter was the usual term found in the literature.
I’ve nearly always used “pollinator insects” in my publications, partly from habit because one of my PhD supervisors once told me that was correct usage, and partly because “insect pollinators” sounded ambiguous to me – was I talking about insects that pollinate things, or about other organisms that pollinate insects? But this was the first time I had been specifically requested to change my phrasing to conform to apparently common usage.
The reviewer is right. Search any journal database or linguistic corpora, and you will get many more hits for “insect pollinators” than you will for “pollinator insects”. Usage of “insect pollinators” also goes back further than the alternative (Scopus results: 1933 for “IP” and 1991 for “PI”). Even the reliable source Google Trends doesn’t register any interest at all for “pollinator insects”!
Yet grammatically, both terms are correct and choosing one would depend on how you were using it. Continue reading
Agreed, bees and other insect pollinators are under threat globally from multiple human pressures. If pollinators disappear completely from an ecosystem, their loss will affect the structure of those ecosystems and the natural foods and fibres we use from the ecosystem. So, finding solutions to the problem of pollinator decline are imperative.
This is why the robo bees story sounds like such a seductive idea. Imagine creating tiny drones with hairs on them that can be programmed to do a bee’s job? Wow! We are off the hook. Continue reading