ArcGIS REST Services Directory Login

NOAH_geoDB/TI_SAR (MapServer)

View In:   ArcGIS JavaScript   ArcGIS Online Map Viewer   ArcGIS Earth   ArcMap   ArcGIS Pro

View Footprint In:   ArcGIS Online Map Viewer

Service Description:

The footprint of bottom trawling was estimated from Vessel monitoring by satellite (VMS) data, linked to the corresponding logbook information (German fleet) or the European fleet register (international fleet), respectively. It is quantified as annual swept area ratio, which is the ratio between the cumulative area touched by trawls and the size of the respective grid cell (0.05°*0.05°). Thus, a swept area ratio of 1 means that an area equivalent to the size of the grid cell was fished over one year. We considered the gear-specific footprints of four major gear groups: otter trawls, demersal seines, beam trawls and dredges. Further the swept area ratio is averaged over a period from 2012-2016 and thus represents the overall picture of fishing pressure to the seafloor in those years.The second map illustrates the coefficient of variation of annual swept area ratios from 2012-2016. It thus corresponds to the map “Footprint of bottom trawling in the German EEZ of the North Sea (2012-2016)” and represents the interannual variation in fishing pressure by bottom trawling.

Map Name: Swept Area Ratio [unitless]


All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers: Description:

Service Item Id: b8538195ea924c0487db4cd73231e5ce

Copyright Text: Thünen Institute (TI)

Spatial Reference: 4326  (4326)

Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriDecimalDegrees


Document Info: Supports Dynamic Layers: true

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true

Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryLegends   QueryDomains   Find   Return Updates