Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Application of the Westerschelde response models to fish and macro-crustacean data from the Oosterschelde
Hostens, K. (2003). Application of the Westerschelde response models to fish and macro-crustacean data from the Oosterschelde, in: Hostens, K. The demersal fish and macro-invertebrate assemblages of the Westerschelde and Oosterschelde estuaries (Southern Bight of the North Sea) = De demersale vis- en macro-invertebraten gemeenschappen van de Westerschelde en Oosterschelde estuaria (Zuidelijke Bocht van de Noordzee). pp. 117-121
In: Hostens, K. (2003). The demersal fish and macro-invertebrate assemblages of the Westerschelde and Oosterschelde estuaries (Southern Bight of the North Sea) = De demersale vis- en macro-invertebraten gemeenschappen van de Westerschelde en Oosterschelde estuaria (Zuidelijke Bocht van de Noordzee). PhD Thesis. Universiteit Gent. Faculteit Wetenschappen: Gent. XVI, 205, 1 cd-rom pp., more

Available in  Author 
Document type: Dissertation

Keywords
    Abundance
    Environmental conditions
    Fauna > Aquatic organisms > Aquatic animals > Fish
    Fauna > Aquatic organisms > Aquatic animals > Shellfish
    Models
    Properties > Chemical properties > Salinity
    Properties > Physical properties > Thermodynamic properties > Temperature
    Properties > Physical properties > Turbidity
    Carcinus maenas (Linnaeus, 1758) [WoRMS]; Limanda limanda (Linnaeus, 1758) [WoRMS]; Pomatoschistus minutus (Pallas, 1770) [WoRMS]; Sprattus sprattus (Linnaeus, 1758) [WoRMS]
    ANE, Netherlands, Oosterschelde [Marine Regions]; ANE, Netherlands, Westerschelde [Marine Regions]
    Marine/Coastal

Author  Top 

Abstract
    The aim of this study is to test the applicability of the statistical models, which were developed to predict fish and macro-crustacean responses to the environmental conditions in the Westerschelde estuary (Chapter 6). For this, a data set from the Oosterschelde was used. The probability of occurrence and the prediction of abundance of several dermersal fish and macro-crustaceans in reponse to four environmental variables (salinity, temperature, dissolved oxygen concentration and turbidity) are investigated. The present study can only be seen as a preliminary attempt to validate the robustness of the models that were established for another system. The diagnostics (% correctly predicted; sensitivity and specificity) for the 15 presence absence models based on the Oosterschelde data were comparable to the diagnostics based on the Westerschelde data. Only the models that explained >45% of the variance in density for six species in the Westerschelde, were applied to the density data from the Oosterschelde. These were largely successful when temperature was the main forcing variable (e.g. for Sprattus sprattus and Pomatoschistus microps). The constant high salinity in the Oosterschelde is a favorable condition for Carcinus maenas and Liocarcinus holsatus, partially masking the effect of the other environmental variables in these models. Limanda limanda and Pomatoschistus minutus have different seasonal distribution patterns in both systems. In the Westerschelde both species only occurred during a relatively short period; while in the Oosterschelde they were present throughout the year. This shows the difficulty of applying statistical models from a real estuary to a different type of ecosystem, namely a marine bay like the Oosterschelde.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Author