Hakalau soil nitrogen and phosphorus during a koa moth outbreak, 2013-2014
type: Dataset
description: 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 resin bags under koa canopy where frass was directly falling as compared to open grass sites where no frass was falling to monitor soil inorganic nitrogen and phosphorus over time. By comparing soil with frass inputs to frass inputs over time we could watch for differential spikes in soil nutrients due to the outbreak event.
keyword: amerigeo
keyword: amerigeoss
keyword: biota
keyword: ckan
keyword: defoliation
keyword: foliar-nutrients
keyword: frass
keyword: geo
keyword: geoss
keyword: hakalau-forest-national-wildlife-refuge
keyword: hawaii-island
keyword: insect-outbreak
keyword: litter-fall
keyword: national
keyword: north-america
keyword: nutrient-pulse
keyword: soil-nitrogen
keyword: soil-phosphorus
keyword: united-states
keyword: usgs-609d5f4fd34ea221ce3c6a7b
issued: 2025-11-21T12:00:52.829001
modified: 20210517
theme: {geospatial}
contact point: Organization
  fn: Stephanie Yelenik
spatial: Location

US Migrating
type: Agent

Original Metadata
type: Distribution
description: The metadata original format
media type: text/xml
format: XML
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.609d5f4fd34ea221ce3c6a7b.xml
issued: 2022-08-06T19:29:37.275164
modified: 2025-11-21T12:00:52.817154

Digital Data
type: Distribution
description: Landing page for access to the data
media type: application/http
format: XML
access URL: https://doi.org/10.5066/P9J9QQ96
issued: 2022-08-06T19:29:37.275170
modified: 2025-11-21T12:00:52.817585