Monthly Archives: July 2018

Pollinators, landscape and friends: our recent trip to the Danish island of Sejerø

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This is not the first time I’ve written about the beautiful Danish island of Sejerø – see my post “Why do bumblebees follow ferries?“.  It’s home to our friends Pia and Stephen Valentine (Stephen is the very talented artist who produced the fabulous study of waxwings that Karin commissioned for my birthday last year).  Earlier this month we traveled over to stay with them and to explore some more of the island.  Here are some photos and thoughts from that trip.

Despite the hot, dry weather that northern Europe has been experiencing recently there were pollinators aplenty.  Thistles and knapweeds (both groups from the daisy family Asteraceae) are well known to be drought tolerant and attract a lot of insect interest.  This is a Pantaloon Bee (Dasypoda sp.)  If it was Britain I’d say that it was D. hirtipes, but there are other species on the continent so I can’t be sure.  These bees are well named: the “pantaloons” are found only on the females and are used to collect pollen, especially from Asteraceae.

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I believe that this is the male of this species; note the absence of the pollen-collecting hairs on the rear legs and the yellow face, typical of many male bees:

The flower heads of the knapweeds were highly sought after; on this one, two different bumblebees (Bombus spp.) were competing with two Silver Y moths (Autographa gamma):

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Sometimes the bumblebees got an inflorescence to themselves, though the photobombing Silver Ys were never far away:

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It’s been a good year for the Silver Y, large numbers have migrated northwards from southern Europe and we’ve had lots in our garden too.  On Sejerø they were everywhere, on all kinds of plants: 

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The butterfly is one of the Blues (Lycaenidae), possibly Common Blue (Polyommatus icarus), but again this being Denmark they may have other species that I’m not familiar with.  Note the Silver Y photobombing once more…:

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Wild carrot (Daucus carota) was common on the island and always attracts a wide range of flies, wasps and beetles:

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Close to home we found a huge cherry tree laden with the fruits of pollination and collected a couple of kilos for Stephen to make into jam.  Stoning them was messy but fun and a nice opportunity to sit and chat about nature and people:

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I was very impressed with Stephen’s up-cycled general purpose baskets, made from plastic containers he finds on the beach, wire, and lengths of old hosepipe:

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Along the shore another edible plant, Sea Kale (Crambe maritima) was attracting a lot of attention from white butterflies (Pieridae) whose caterpillars feed on this and other members of the cabbage family (Brassicaceae):

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I tried a piece of raw leaf; it tasted ok, salty and a little bitter.  Apparently it’s very nice if you blanch the young leaves.  It’s a distinctive and impressive component of the beach flora:

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Amidst the greens, buffs and browns of the beach landscape we encountered the occasional scarlet of a patch of poppies (Papaver sp.):

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Everywhere on the island we saw evidence of the link between life on land and in the sea, and the cycles and processes upon which that life depends.  Sand martins (Riparia riparia – an apt name – “riparian” refers to the interface between land and water) are common and their nest excavations speed up the return of sediments back to the sea:

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Favoured rocks have been used by gulls and other sea birds for generations, their guano helping to enrich these coastal waters and fueling the primary production of seaweeds and diatoms, which in turn feed other shore life:

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Evidence of human activities was never far away, though, concrete and steel blending with nature:

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Wheat fields merging with the sky:

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Thanks to Pia and Stephen, and of course Zenja, for making this such a wonderful trip and allowing us to join them in exploring their home island:

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Filed under Bees, Biodiversity, Birds, Butterflies, Moths, Pollination

Academic job interviews: don’t feel obliged to do everything you said you’d do

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Last month I cleared out my office in preparation for our move to the University of Northampton’s new Waterside Campus.  Going through files I’d not opened in decades was a cathartic and occasionally emotional experience.  In one file I came across a box of OHP transparencies from the presentation I gave at my job interview in 1995!  (For younger readers, OHPs were just like PowerPoint, but you carried them around in a box….)

Anyway, the presentation (see photo above) at what was then Nene College of Higher Education set out what my research plans were going to be if I was offered the job. It’s interesting to look back on these research themes and consider whether I did actually do what I said I was going to do (go to my Publications page for details of the papers I’m referring to):

Flowering phenology” – This was a large part of my PhD, which I had completed two years earlier.  At Northampton I did a bit of work,  including a big meta analysis with Mexican colleagues Miguel Munguia-Rosas and Victor Parra-Tabla, but nothing further, though I do have a lot of unpublished data that one day may see the light of, err, day….

Pollination systems in the Asclepiadaceae” – I’ve done a lot of work on this plant family, including field work in South America and Africa, particularly with my German colleague Sigrid Liede-Schumann.  However Asclepiadaceae no longer exists as a separate family (it’s now a subfamily of Apocynaceae).  I have a large paper in press at the moment which assesses the diversity of pollination systems in the Apocynaceae; more on that when it’s published.

Specialisation and generalisation in pollination systems” – yes, done lots on this too, including contributing to the Waser et al. (1996) Ecology paper that’s now racked up >1550 citations, plus assessing latitudinal trends in specialisation.  Still a major focus of my research, it’s an area where there are lots of questions still to be answered.

Reproductive output [in plants]” – very little done since my doctoral work, though questions of annual variation in reproductive allocation were a big part of my PhD.  Has fallen by the wayside rather.

Seed predation” – ditto – it was a major component of my PhD and I published a couple of things but then hardly touched the topic.  A shame in some ways as I still think it’s a fascinating topic.

Pollinator behaviour” – I’ve done some work, mainly on birds and bees rather than the butterfly model system I proposed at the time, which was to work with Dave Goulson on a follow-up of a paper we published on floral constancy in Small Skipper butterflies.  This field has moved on hugely though, with some extremely sophisticated work being done with captive bumblebee colonies for instance.

Overall I think I’ve worked on about 50% of what I said I would do, which I’m more than comfortable with.  Because I’ve also done a whole bunch of stuff I never mentioned at interview, including work on pollinator conservation and interaction network analyses, both of which were hardly thought about in 1995.  There’s also research on the history of science that I was thinking about in the early 90s but which I didn’t present as a major research theme.

The moral of this story for anyone preparing for a job interview for an academic position is: Don’t think that you have to do all of the research that you say you’re going to do in the presentation.  Opportunities come and go, and interests wax and wane.  What is currently seen as exciting research may well, in 10 years time, be seen as old hat or a dead end, or have evolved in ways that provide you with fewer opportunities to contribute.  Prepare to be flexible, but don’t lie about your intentions.  In fact, as recently highlighted on the Dynamic Ecology blog, don’t lie about any aspect of getting an academic job!

One other thing: be realistic.  In retrospect I was too ambitious in the range of areas in which I wanted to do research, though they were all linked.  But over the course of 23 years it’s impossible to say how your research career will develop.  I’m looking forward to the next 23…. 🙂

 

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Filed under Apocynaceae, Pollination, University of Northampton