Observed Presence of Alien and Invasive Algae, 2000-2013 - Hawaii

Description

Due to the geographic isolation of the Hawaiian Islands, close to 25% of Hawaii's reef fishes and red algae species are endemic. This leaves Hawaiian coral reefs particularly vulnerable to alien invasions due to their valuable role as a biodiversity resource. Invasive algae can pose a serious threat to coral reefs by spreading and growing rapidly, smothering or outcompeting corals and other organisms. This can significantly alter the structure and function of the reef ecosystem. Four species of alien red algae have become invasive in Hawaii: prickly seaweed (Acanthophora spicifera), hookweed (Hypnea musciformis), smothering seaweed (Kappaphycus spp.), and gorilla ogo (Gracilaria salicornia). This raster data layer represents the presence of alien and invasive algal species within 1 km of an observation. Invasive algae data originated from monitoring surveys in the University of Hawaii at Manoa (UH) Fisheries Ecology Research Laboratory (FERL) Hawaii Fish and Benthic Biological Synthesis Database (2000-2013), which is synthesized from NOAA, State of Hawaii Division of Aquatic Resources (DAR), Coral Reef Assessment and Monitoring Program (CRAMP), and The Nature Conservancy (TNC), as well as invasive algae surveys conducted across the state in 2002 by Dr. Jennifer Smith (Smith et al., 2002). These 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. Point data for transects with observed presence of any invasive algae were assigned a value of 1 and converted to raster with 500-m pixel size. To account for uncertainty in geographic position and the fragmentation and spread of algae, the Ocean Tipping Points (OTP) project estimated presence within a 1-km radius of observed invasive algae presence. A Focal Statistics tool was run to calculate the maximum value within a 1-km radius of each pixel with the assumption that if an invasive algae was observed in one location it is likely present in at least the surrounding 1 km of reef area. Final raster values of 1 represent areas within 1 km of positive invasive algae observations while values of 0 represent the remaining area. The geographic extent of the data layer is from the shoreline of the Main Hawaiian Islands extending 5 km offshore and 1 km inshore.

Resources

Name Format Description Link
52 Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WMS&version=1.3.0&request=GetCapabilities
27 http://pacioos.org
27 http://pacioos.org
0 This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. http://geo.pacioos.hawaii.edu/geoserver/
0 This URL provides a viewer for this dataset. http://geo.pacioos.hawaii.edu/geoexplorer/
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/oceantippingpoints/#data
0 http://oceantippingpoints.org/about-us/people#Carrie
21 lwedding.html https://www.geog.ox.ac.uk/staff/lwedding.html
27 http://oceantippingpoints.org
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
27 http://pacioos.org
0 http://oceantippingpoints.org/about-us/people#Carrie
50 Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WCS&version=1.0.0&request=GetCapabilities
27 http://oceantippingpoints.org
52 Open Geospatial Consortium Web Map Service - Cached (WMS-C). Use of WMS-C is similar to traditional WMS but with the addition of the "tiled=true" parameter, which triggers GeoServer to pull map tiles from GeoWebCache if they have been previously generated. This can dramatically improve performance, especially for larger datasets. Supported map formats include JPEG and PNG. Supported info formats include GeoJSON, GML, HTML, and plain text. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/gwc/service/wms?service=WMS&version=1.1.1&request=GetCapabilities&tiled=true
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
21 lwedding.html https://www.geog.ox.ac.uk/staff/lwedding.html
27 http://oceantippingpoints.org
27 http://pacioos.org
0 This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. https://geo.pacioos.hawaii.edu/geoserver/
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/oceantippingpoints/#data
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
52 Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WMS&version=1.3.0&request=GetCapabilities
50 Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WCS&version=1.0.0&request=GetCapabilities
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
27 http://pacioos.org
0 This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. https://geo.pacioos.hawaii.edu/geoserver/
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/oceantippingpoints/#data
0 http://oceantippingpoints.org/about-us/people#Carrie
21 lwedding.html https://www.geog.ox.ac.uk/staff/lwedding.html
27 http://oceantippingpoints.org
50 Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WCS&version=1.0.0&request=GetCapabilities
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
52 Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_invasive_algae/ows?service=WMS&version=1.3.0&request=GetCapabilities

Tags

  • human dimensions
  • red algae
  • united states of america
  • coral reef
  • ecosystems
  • human settlements
  • biosphere
  • community dynamics
  • plants
  • oceans
  • pacioos
  • invasive species
  • continent
  • coastal areas
  • hawaii
  • biological classification
  • pacific islands ocean observing system
  • marine ecosystems
  • north america
  • earth science
  • environmental impacts
  • macroalgae (seaweeds)
  • aquatic ecosystems
  • ocean
  • hawaiian islands
  • environmental sustainability
  • central pacific ocean
  • reef habitat
  • coastal processes
  • reef
  • coral reefs
  • pacific ocean
  • ecological dynamics
  • sustainability

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Categories