[Syrphidae] FW: Re: FW: Syrphidae alert

[Francis Gilbert]

-----Original Message-----
From: Bastiaan [mailto:bastiaan at wakkie.org] 
Sent: 10 June 2020 21:14
To: Leendert-Jan van der Ent <ljvanderent at planet.nl>
Cc: Hoverfly discussion list <Syrphidae at lists.nottingham.ac.uk>
Subject: Re: [Syrphidae] Re: FW: Syrphidae alert

Hi,

First of, I was sitting most of the time home, so no time to look 
really. I guess that has an effect too this year?
Also I have the 'feeling/hunch' a lot of species start earlier, the last 
years I always seam to mis the Melangyna's for example.

I guess fixed monitoring (grid) across Europe can really prove something 
in the future.

Cheers,
Bastiaan


Leendert-Jan van der Ent schreef op 10-06-2020 21:53:
> Hi all,
> 
>  Similar in The Netherlands.
>  Low number of specimens of most species and low numbers regarding
> species in forest areas on sandy soils.
>  We have had the thirth dry and warm spring in a row and probably also
> will get a dry and hot summer again.
>  This is going to be devestating to populations of quite some forest.
> and also natural dry grassland an Heather, species.
>  The number of species that I usually see around the place where I do
> live every year but the past few years not anymore is growing.
>  If this continuous we will get mediteranean climate conditions in The
> Netherlands .
>  Good for some interesting _Pipizella_ and _Paragus_ species, maybe
> also _Merodon_, but bad for the North European and Central European
> hilly area and mountain species.
> 
>  Maybe an idea that those of us who have similar findings tries to
> quantify this downgrade of species and specimens numbers and put these
> information together to find out which species are influenced the
> most. I will do this at the end of the season.
>  Right now we are busy with the Red Listing of Eurpean hoverfly
> species.
>  Climate change - influenced by humans or not - might become a bigger
> threat to hoverfly species than habitat destruction has been in the
> past. And this effects most species of hoverflies and not only those
> who are living in threathened habitat types.
> 
>  Let's hope that in other parts of Europe hoverflies are doing better!
> 
> 
>  Regards,
> 
>  Leendert-Jan van der Ent
> 
>> Op 10 juni 2020 om 6:57 schreef Francis Gilbert
>> <Francis.Gilbert at nottingham.ac.uk>:
>> 
>> FROM: stiller3 [mailto:stiller3 at xs4all.nl]
>> SENT: 09 June 2020 20:56
>> TO: Ante Vujić <ante.vujic at dbe.uns.ac.rs>
>> CC: Hoverfly discussion list <Syrphidae at lists.nottingham.ac.uk>
>> SUBJECT: Re: [Syrphidae] Syrphidae alert
>> 
>> Hi Ante,
>> 
>> I kind of experience the same here where I have spent almost 2
>> months now, in the SW of France.
>> Low numbers of most taxa, also of many Syrphini, except some.
>> Sphaerophoria scripta in very large numbers last week.
>> But, compared to last year 2019, my impression is that this year is
>> much poorer, despite the mild winter they had here.
>> 
>> But 'a hunch' is no proof.
>> 
>> cheers, André
>> 
>> Ante Vujić schreef op 09-06-2020 09:59:
>> 
>>> Dear all,
>>> 
>>> I would like to share with you field experience from this season
>>> in Serbia. We have less than 50% of species usual for this time of
>>> year in flight and most of present species are with very small
>>> populations. Aphidofagous species are most numerous, especially
>>> Syrphus. Very low number of Cheilosia and Merodon. This can be
>>> related to long period without rain during spring, but still.
>>> During my 40 years experience in field work, this is the strangest
>>> season.
>>> 
>>> Best regards,
>>> 
>>> Ante
>>> 
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> 
>  Met vriendelijke groet,
>  Leendert-Jan van der Ent
> 
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> 
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