Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring...
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Transcript of Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring...
![Page 1: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/1.jpg)
Canopy Trimming Experiment (CTE) at Luquillo
![Page 2: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/2.jpg)
CTE Scientific Basis
• A result of the monitoring activities• To simulate and increase the frequency of
hurricanes• Hypothesis: changes to microclimate (air
temperature, soil moisture, light) and detritus (carbon and nutrients) drive ecosystem changes (productivity, species composition, storage and export of Carbon and nutrients).
![Page 3: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/3.jpg)
CTE Scientific Basis
• Hypothesis: changes to microclimate (air temperature, soil moisture, light) and detritus (carbon and nutrients) drive ecosystem changes (productivity, species composition, storage and export of Carbon and nutrients).
![Page 4: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/4.jpg)
CTE Scientific Basis
• Strong Hurricanes reposition plant materials from the canopy forest floor increasing the levels of detritus on the ground
• Light level, soil moisture, and temperature simultaneously increase after disturbance and may interact with the pulse of ditritus to affect subsequent community and ecosystem changes
![Page 5: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/5.jpg)
CTE Design
• A long-term experiment
• Two parts: – a forest canopy manipulation– specific manipulation of the biota.
• Two stages of measurements:– Pre-treatment– Post-treatment
![Page 6: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/6.jpg)
CTE Design
• the forest canopy will be trimmed every six years and the material (branches, leaves) will be deposited onto the forest floor to simulate hurricane damage.
![Page 7: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/7.jpg)
CTE Block Design
Link
![Page 8: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/8.jpg)
CTE Data
Pre-treatment: (the current phase of the experiment):• Worms, Bacteria & Fungi prelim data.: weights of
leaves by species, total weights of wood, fruits and flowers and miscelaneous
• Microbial biomass prelim data: weights of fumigated, non-fumigated, wet and dry soil, calculated value of biomass (?)
• Seedlings: species, dbh, height• Meteorological: LAI/Light
![Page 9: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/9.jpg)
CTE Data
Pre-treatment: (the current phase of the experiment):
• Litterfall : new palm fronds, leaves, wood, miscelaneous, and fruits,seeds,flower
• Others: arthropods prelim data, Soil solution N&P
![Page 10: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/10.jpg)
CTE Data
Post Treatment measurements:
• All of the above but some taken less frequently• Root production &turnover• Green Litter Decomp.• Soil's Trace Gases• Arthropods
![Page 11: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/11.jpg)
Objectives for this workshop
• Preliminary synthesis data base design– Pre-CTE litterfall data comparison (can it be
done?)– Pre-treatment data merge– Foresee data design of pos-treatment
measurements
• Be able to merge or query them all!
![Page 12: Canopy Trimming Experiment (CTE) at Luquillo. CTE Scientific Basis A result of the monitoring activities To simulate and increase the frequency of hurricanes.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d095503460f949dbb44/html5/thumbnails/12.jpg)
IM and CTE
• Ecological Research process: Study Design: IM participation in the design stage -common variables nonmenclature
• Ecological Research process: Field work: assist with the compilation and sharing of protocols (Web Provate page). Prepare Data Entry sheets
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IM and CTE
• Ecological Research process: Data Entry and Verification – IM enters data and do QC process
• Ecological Research process: Data analysis – this workshop is meant to facilitate this stage
• Ecological Research process: Data sharing within the group – private Web page where they can deposit and share their data and metadata (http://luq.lternet.edu/data/CTE)
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IM and CTE
• Ecological Research processess: Journal pub, Data Archive, and mining– Online access to scientific citations (
http://luq.lternet.edu/publicatons)– Data documentation started at the first stage– Community common variables, date, plot,
subplot format
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CTE Bottlenecks
• Administrative• Some scientists hoarding data (subtle but
still exist)• Metadata completion: it has been broken
down in stages but accessibility of some scientists slows the process down
Project coordinator: facilitates sharing and closely and files data and metadata with IM