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  4. Hakalau litter, frass, soil, and understory foliar nitrogen during a koa moth outbreak, 2013-2014

Hakalau litter, frass, soil, and understory foliar nitrogen during a koa moth outbreak, 2013-2014

Dates

Publication Date
Start Date
2013-06-06
End Date
2015-04-15

Citation

Yelenik, S.G., Perakis, S., Peck, R.W., and Banko, P.C., 2021, Hakalau litter, frass, soil, and understory foliar nitrogen during a koa moth outbreak, 2013-2014: U.S. Geological Survey data release, https://doi.org/10.5066/P9J9QQ96.

Summary

This data release includes metadata and tabular data that document estimates of litterfall, koa moth (Scotorythra paludicola) caterpillar frass production, soil nutrients, and foliar nutrients during 2013-2014 at Hakalau Forest National Wildlife Refuge. During this time, there was a massive defoliation event of Acacia koa (koa) trees by the koa moth. We monitored these metrics in 4 sites that varied in forest structure and composition at Hakalau. We used litter traps to monitor koa litter fall over time and foliar %N to estimate N inputs from litter. We used caterpillar counts, koa canopy estimates, frass production rates, and frass %N to estimate N inputs from frass on the landscape. We used resin bags under koa canopy where frass [...]

Child Items (4)

Contacts

Point of Contact :
Stephanie G Yelenik, US Forest Service Rocky Mountain Research Station
Process Contact :
Stephanie Yelenik, US Forest Service Rocky Mountain Research Station
Originator :
Stephanie G Yelenik, Steven Perakis, Robert W Peck, Paul C Banko
Metadata Contact :
Paul C Banko, NW-PACIFIC ISLAND REGION
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Pacific Island Ecosystems Research Center
USGS Mission Area :
Ecosystems

Attached Files

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Hakalau litter, frass, soil, and understory foliar N during a koa moth outbreak, 2013-2015.xml
Original FGDC Metadata
View 		22.58 KB application/fgdc+xml
IMG_2379 ScotorythraFrass.JPG
“Scotorythra frass layer on top of Acacia koa litter. Photo: S. Yelenik.” 		thumbnail 2.02 MB image/jpeg

Purpose

Data were collected to document frass production and nutrient pulses during a koa moth outbreak during a massive defoliation event at Hakalau Forest National Wildlife Refuge, an important area for bird conservation in Hawaii. Pulses of nitrogen (N) and phosphorus (P) could potentially lead to increased growth of native and exotic species in the understory of koa forests. This is especially important in restoration forest areas with exotic grass dominating the understory, as grasses may be able to more quickly take up pulses of N and P from frass fall. We also monitored nutrients coming in the form of koa litterfall. We then tracked the pulse of nutrients into soils and then watched for uptake in foliar nutrients of different plant species to form a picture of those species that might be benefitting from nutrient pulses.
Scotorythra frass layer on top of Acacia koa litter. Photo: S. Yelenik.
Scotorythra frass layer on top of Acacia koa litter. Photo: S. Yelenik.

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9J9QQ96

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