[LTER-luq] Fwd: Final litterfall graph (until we add palms)

Thu Aug 6 10:42:52 MDT 2015

This all is interesting. When we get rain and all that leaf litter start to decompose is when we will see a pulse in nutrients and microbes will react.
Sharon

Sharon A. Cantrell, Ph. D.
Vicerrectora Asociada Estudios Graduados e Investigación
Associate Vicechancellor Graduate Studies & Research
Universidad del Turabo
P. O. Box 3030
Gurabo, PR 00778
Tel. 787-743-7979 Ext. 4273, 4268

Catedrática (Professor)
Departamento de Biología
Escuela de Ciencias Naturales y Tecnología
Universidad del Turabo
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From: luq [mailto:luq-bounces at lists.lternet.edu] On Behalf Of Alan Covich
Sent: Thursday, August 06, 2015 12:37 PM
To: Schowalter, Timothy D.
Cc: luq at lists.lternet.edu
Subject: Re: [LTER-luq] Fwd: Final litterfall graph (until we add palms)

Thanks Tim

Very interesting! The nutrient cycling impacts would be great to know more about.

Alan

On Thu, Aug 6, 2015 at 12:22 PM, Schowalter, Timothy D. <TSchowalter at agcenter.lsu.edu<mailto:TSchowalter at agcenter.lsu.edu>> wrote:
Any evidence that herbivory is increasing?  Drought is a typical trigger for insect outbreaks.  See the attached Van Bael paper for a tropical example.  Tim

Timothy D. Schowalter, Professor
Department of Entomology
Louisiana State University
   Agricultural Center
Baton Rouge, LA 70803
Phone:    225-578-1827<tel:225-578-1827>
Cell:        225-252-5226<tel:225-252-5226>
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Email:      tschowalter at agcenter.lsu.edu<mailto:tschowalter at agcenter.lsu.edu>
Web:       http://entomology.lsu.edu/
                http://www.lsuagcenter.com/en/our_offices/departments/Entomology/
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From: luq [mailto:luq-bounces at lists.lternet.edu<mailto:luq-bounces at lists.lternet.edu>] On Behalf Of Robert Waide
Sent: Thursday, August 06, 2015 11:12 AM
To: luq at lists.lternet.edu<mailto:luq at lists.lternet.edu>
Subject: Re: [LTER-luq] Fwd: Final litterfall graph (until we add palms)

The really interesting thing is that litterfall is actually less initially, suggesting that trees have a 2-phase strategy in place for drought: hold on as long as possible, then give up and drop your leaves.
On 8/6/2015 10:09 AM, Alan Covich wrote:
WOW! That is an amazing response (to drought?) indicating some type of threshold in soil moisture?

Are data on light to see what the canopy is doing?

Did you have leaf-fall data from before and after 1994 on the Big Grid?

Alan

On Thu, Aug 6, 2015 at 11:56 AM, Jess Zimmerman <jesskz at ites.upr.edu<mailto:jesskz at ites.upr.edu>> wrote:
Hi All,

To contribute to our discussions going on, I pass along the litterfall graph that Sarah prepared that compares litterfall YTD vs. the averages since the CTE started in 2002.  There was an immense amount during one single fortnight in May.  It was so much that it took all the staff to collect it all.  I spoke to John Bithorn yesterday and he told me he was many species, not just a few, that contributed to the peak.  We'll keep you posted as more data are added.  We are also analyzing the data set on palm litter, too.

jess

Jess K. Zimmerman
Professor
Lead PI, Luquillo LTER Program
Department Environmental Sciences
University of Puerto Rico - Rio Piedras
Rio Piedras, Puerto Rico

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---------- Forwarded message ----------
From: Sarah Stankavich <sarahstankavich at gmail.com<mailto:sarahstankavich at gmail.com>>
Date: Wed, Aug 5, 2015 at 1:17 PM
Subject: Final litterfall graph (until we add palms)
To: Jess Zimmerman <jesskz at ites.upr.edu<mailto:jesskz at ites.upr.edu>>
Here you go

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