Datasets > Raster data > Hawaii > 2015-2019

Phosphorus Flux from Onsite Waste Disposal Systems

Ocean Tipping Points Project · 2016 Full Details

Full Details

Title
Phosphorus Flux from Onsite Waste Disposal Systems
Description
This raster data layer represents the phosphorus flux coming from onsite waste disposal systems (OSDS) (e.g. cesspools and septic tanks). OSDS point data was obtained from UH/DOH (Bob Whittier & El Kadi) that estimates phosphorus flux from each TMK parcel with OSDS. We converted the points to raster by summing nutrient flux values within 500 m x 500 m pixels. Then focal statistics was used to calculate the total flux within a 1.5 km radius of each oceanic cell. Units are in grams/day per km2., This layer was developed as part of a geospatial database of key anthropogenic pressures to coastal waters of the Main Hawaiian Islands for the Ocean Tipping Points project (http://oceantippingpoints.org/). Ocean tipping points occur when incremental changes in human use or environmental conditions result in large, and sometimes abrupt, impacts to marine ecosystems. The ability to predict and understand ocean tipping points can enhance ecosystem management. The goal of the Hawaii case study of the Ocean Tipping Points project was to gather, process and map spatial data on environmental and anthropogenic drivers of coral reef ecosystem states. Understanding direct anthropogenic drivers is critical for coral reef management and implementing policies to protect ecosystem services generated by coral reefs., This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Creator
Ocean Tipping Points Project
Publisher
Ocean Tipping Points Project
Subject
Phosphorus, Nutrient pollution of water, Waste disposal in the ocean, Marine ecology, Marine ecosystem management, Marine ecosystem health, Environmental impact analysis, Coastal ecosystem health, Oceans, Environment
Temporal Coverage
2016
Date Issued
2016
Rights
Please contact the Ocean Tipping Points project in advance of applying these data sets to project work so the PI can track and communicate data uses and ensure no duplicate efforts are underway. When applying these data for publication, please reference and cite the complete journal article, Wedding et al. 2017, http://oceantippingpoints.org/our-work/publications.
Rights Holder
Copyright ownership resides with the originator.
Access Rights
Public
Format
GeoTIFF
Language
English
Date Added
October 01, 2025

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Cite and Reference

  • Citation
    Ocean Tipping Points Project (2016). Phosphorus Flux from Onsite Waste Disposal Systems. Ocean Tipping Points Project. (dataset)
  • BTAA Geoportal Link

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