[Mastwatch] Big fruitfall at Gunung Palung

Ashton, Peter pashton at oeb.harvard.edu
Sat Aug 23 09:02:12 PDT 2014

Hi all,

My impression at Pasoh since the seventies is that the real McCoy mast takes place roughly every other time, that is roughly every decade. What has the Sepilok (and Lambir?) experience been in this respect? Both Gng Palung and Sepilok are close to the equator relative to Pasoh, so likely getting the southern, about July, trigger rather than January trigger from time to time, which might screw things up somewhat.


From: Mastwatch [mastwatch-bounces at lists.phylodiversity.net] on behalf of Sepilok2010 . [sepilokdata at gmail.com]
Sent: Friday, August 22, 2014 7:46 PM
To: Webb, Campbell
Cc: mastwatch; Margrove, James Andrew
Subject: Re: [Mastwatch] Big fruitfall at Gunung Palung

Hi Cam,

Do you have rainfall/temp data for that area?

In Sepilok only the early flowering species (Parashorea spp., S xathophylla went in a big way with up to 80% of the trees of those species), with most other species down around the 10% mark or less. In the rainfall/temperature data for Sandakan - there isn't a pronounced drought signature, but there is a pronounced reduction in temps - corresponding to the timing of the polar vortex

I guess I'm wondering if there is enough data around to do a Borneo-wide assessment of flowering/fruiting intensity - environmental conditions. We have data for about 5500+ Dipts  from Sepilok for the 2010 & 2014 GF events.


On Fri, Aug 22, 2014 at 11:47 AM, Cam Webb <cwebb at oeb.harvard.edu<mailto:cwebb at oeb.harvard.edu>> wrote:
Hi All,

I just talked by phone to Endro Setiawan, senior staff of the Gunung
Palung National Park office. He said that the recent mast fruiting at
Gunung Palung has been huge; from what he described, I estimate it may
have been the biggest successful mast since 1990! It’s been a very long
time since we’ve seen dense dipterocarp seedling carpets, but he said
there were dipterocarp seeds everywhere, starting to germinate (at the
end of July). He most recently visited the forest in the south of the
park (Pangkal Tapang area), but had also observed the Cabang Panti
Research Station site (central west) several weeks earlier. There, the
dominant Dipterocarpus sublamellatus (alluvial) and Shorea quadrinervis
(low hills) were in heavy fruit. Overall, almost every dipterocarp tree
he saw was in fruit, of almost all the species. Plus all the other
masting taxa: Koompassia, Artocarpus, Nephelium, Manigera, Durio,
Baccaurea, Scaphium, etc.

Great news!

More text and pics at: http://camwebb.info/blog/2014-08-22/


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