Observed Presence of Alien and Invasive Algae, 2002

Abstract/Contents

Abstract

This raster data layer represents the presence of alien and invasive algal species within 1 km of an observation. Original data is from Jen Smith, based on MHI surveys in 2002, and invasive species data queried from the FERL biological survey database which is synthesized from NOAA, DAR, CRAMP, TNC, and other surveys (Smith et. al 2002; Hawaii Fish and Benthic Biological Synthesis Database). This data should be considered presence only. Areas with no presence may be due to lack of survey data, surveys that did not identify algae to the species level, or observed absence. Raster values of 1 represent areas within 1 km of positive invasive algae observations while values of 0 represent the remaining area. The cell size is 500 m and the AOI is from the shoreline of the MHI extending 5 km offshore and 1 km inshore.

Purpose

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.

Description

Type of resource	cartographic, software, multimedia
Form	Raster Dataset
Publisher	Ocean Tipping Points Project
Publication date	2016
Language	English
Digital origin	born digital
Map data	Scale not given. ; Custom projection W 160°17ʹ58ʺ--W 154°40ʹ44ʺ/N 22°16ʹ45ʺ--N 18°50ʹ50ʺW 160°17ʹ58ʺ--W 154°40ʹ40ʺ/N 22°16ʹ45ʺ--N 18°50ʹ55ʺ, Scale not given ; EPSG::4326

Creators/Contributors

Creator	Ocean Tipping Points Project

Subjects

Subject	Introduced organisms
Subject	Algae
Subject	Marine ecology
Subject	Marine ecosystem management
Subject	Marine ecosystem health
Subject	Coral reefs and islands
Subject	Environmental impact analysis
Subject	Coastal ecosystem health
Subject	Hawaii
Subject	Pacific Ocean
Subject	2002
Subject	Oceans
Subject	Biology and Ecology
Subject	Environment
Genre	Geospatial data
Genre	Cartographic dataset

Bibliographic information

WGS84 Cartographics	This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location	https://purl.stanford.edu/vj230dq3177

Access conditions

Use and reproduction

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.

Copyright

Copyright ownership resides with the originator.

Preferred citation

Preferred citation

Ocean Tipping Points Project. (2016). Observed Presence of Alien and Invasive Algae, 2002. Ocean Tipping Points Project. Available at: http://purl.stanford.edu/vj230dq3177.

Collection

Ocean Tipping Points

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