[LTER-mcm-pi] 5 min gem for the week

[Cristina Vesbach]

yes

On Wed, Sep 16, 2015 at 11:54 AM, Priscu, John <jpriscu at montana.edu> wrote:

> Tina—the 18S data should pick-up fungi—correct?
>
>
>
> *From:* cvesbach at gmail.com [mailto:cvesbach at gmail.com] *On Behalf Of *Cristina
> Vesbach
> *Sent:* Wednesday, September 16, 2015 11:52 AM
> *To:* Priscu, John
> *Cc:* John Barrett; mcm-pi at lists.lternet.edu
>
> *Subject:* Re: [LTER-mcm-pi] 5 min gem for the week
>
>
>
> I too missed yesterday's call, sorry, I forgot to put the new time in my
> calendar.  I think in the summer, physical disruption (streamflow) plays a
> big part in maintaining diversity, while micro scale gradients in nutrients
> promote diversity.  Can we test this by comparing bacterioplankton dynamics
> in summer vs. winter? Or above and below the chemocline?  The limno samples
> were loaded onto the sequencer an hour ago, so we can look at these next
> week (I think we have 3 summers for 3 lakes on that run, 16S only, but 18S
> is prepped and in the queue).  Finally, viruses should play a role too, but
> have no data on this.  Samples are prepped, but my student working on this
> bailed.  My tech and I are prepping the viriome libraries next week (this
> is the last step before sequencing).
>
>
>
> On Wed, Sep 16, 2015 at 10:32 AM, Priscu, John <jpriscu at montana.edu>
> wrote:
>
> So where do the MCM soils, streams and lakes fit into this paradigm?
>
>
>
>
>
> *From:* John Barrett [mailto:jebarre at vt.edu]
> *Sent:* Wednesday, September 16, 2015 10:22 AM
> *To:* Priscu, John
> *Cc:* mcm-pi at lists.lternet.edu
> *Subject:* Re: [LTER-mcm-pi] 5 min gem for the week
>
>
>
> Wow, that's uncanny John. I was just using the paradox of the plankton in
> discussion with my grad students.
>
>
>
> My guess would be viruses to explain diversity in lakes. They are
> otherwise too stable - unless we can invoke flood years as a physical
> disruption that offsets competative exclusion. Are there data in the cool
> years to show decreases in diversity? That would be a test of whether
> floods acted to upset equilibrium in species composition.
>
>
>
>
>
>
>
> On Wed, Sep 16, 2015 at 12:15 PM, Priscu, John <jpriscu at montana.edu>
> wrote:
>
> Sorry that I missed the call yesterday—didn’t get home from Europe until
> midnight and was not well organized—in other words, I forgot about the call.
>
>
>
> Here would be my gem for the week: So, where does the MCM fit into
> Terborgh’s scheme? We have few predators (I think we do—at least for the
> lakes), yet biodiversity is relatively high. What replaces predators in our
> system—Viruses? physical disruption? Maybe physical disruption occurs
> faster than competitive exclusion, maintaining high diversity? This kind of
> contemporaneous disequilibrium has been proposed by Richerson et al. 1970
> (attached) [Richerson was the chair of my grad committee].
>
>
>
> JP
>
>
> _______________________________________________
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>
>
>
>
>
> --
>
> J. E. Barrett, Ph.D.
> Associate Professor
> 2125 Derring Hall
> Department of Biological Sciences
> Virginia Tech
> Blacksburg VA, 24061
>
>
> _______________________________________________
> Long Term Ecological Research Network
> mcm-pi mailing list
> mcm-pi at lternet.edu
>
>
>
>
>
> --
>
> Cristina Takacs-Vesbach
> Assoc. Professor
> UNM Biology
> MSC03 2020
> Albuquerque, NM 87131
>
> 505-277-3418/3316
> Fax: 505-277-0304
>
> Fed Ex packages
> UNM Biology
> 133 Castetter Hall
> Albuquerque, NM
> 87131
>
> _______________________________________________
> Long Term Ecological Research Network
> mcm-pi mailing list
> mcm-pi at lternet.edu
>
>


-- 
Cristina Takacs-Vesbach
Assoc. Professor
UNM Biology
MSC03 2020
Albuquerque, NM 87131

505-277-3418/3316
Fax: 505-277-0304

Fed Ex packages
UNM Biology
133 Castetter Hall
Albuquerque, NM
87131
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