The main product is an operational
and widely applicable remote sensing system for the assessment
of coastal water environmental quality based on the optimal
detection and mapping of submerged vegetation in coastal waters from
aerial photographs, airborne scanner data and/or satellite images.
The remote sensing system is accompanied by a guiding system for advising on selection of input data and
analysis methods in order to tailor the system for the assessment of
environmental quality in different coastal waters and for different
environmental management purposes.
The system combines remotely
sensed data with data sets from the Geographic Information System
GIS (e.g. water depth, sediment quality) and background knowledge on
vegetation characteristics, thereby considerably improving the
interpretation of submerged vegetation data obtained by remote
The remote sensing system is
applicable to different geographical areas by adjusting the
background information. The system can also be applied to the mapping of other sedentary coastal
water biota, for example mussel beds.
The sub-products of RESCOMAN are:
The process of acquiring and analyzing the remotely sensed
data has required the development of various procedures and tools. These methods
comprise methods for acquisition and analysis of background
information, planning and accomplishment of aerial photo surveys,
geo-coding of aerial photography and airborne scanner data and analysis of
the acquired remote sensing data. The methods are described in the respective
parts of the detailed guiding system. Some of the developed methods has also
been implemented as software tools to be used in connection with image
processing and GIS systems like ENVI, CHIPS for Windows and ArcView.
A major product of this project is the development of a step
by step guiding system allowing persons
interested in eelgrass mapping but not necessarily experts in remote sensing to
prepare and monitor a eelgrass mapping campaign. The guiding system has been
intended to cover the full width of aspects in selection of sensor type,
planning, accomplishment and analysis of imagery from a remote sensing campaign.
The guiding system is implemented as a hypertext document
available on the internet at NERI,
Department of Lake and Estuarine Ecology's website, allowing updating
whenever new information and experience is available.
Another important aspect of the hypertext structure is that it
allows the user to select his own level of details from the brief overall
description of necessary considerations down to the very technical and in-depth
level mainly oriented towards skilled remote sensing experts.
Information regarding eelgrass distribution and
Field data procedures