Aquatic biodiversity/Description: Difference between revisions

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{{ComponentDescriptionTemplate
{{ComponentDescriptionTemplate
|Reference=Weijters et al., 2009; Harper, 1992; Bouwman et al., 2013c; Lehner and Döll, 2004; Kourzeneva, 2010; Ladson and White, 1999; Biemans et al., 2011; Kuiper et al., submitted;  
|Reference=Weijters et al., 2009; Harper, 1992; Bouwman et al., 2013c; Lehner and Döll, 2004; Kourzeneva, 2010; Ladson and White, 1999; Biemans et al., 2011; Kuiper et al., submitted;
|Description=GLOBIO aquatic assesses biodiversity intactness,expressed as mean species abundance (MSA) in inland aquatic ecosystems: rivers and streams, deep and shallow lakes and wetlands such as floodplain wetlands, marshes, and isolated wetlands. See Figure Flowchart.
|Description=GLOBIO aquatic assesses biodiversity intactness,expressed as mean species abundance (MSA) in inland aquatic ecosystems: rivers and streams, deep and shallow lakes and wetlands such as floodplain wetlands, marshes, and isolated wetlands. See Flowchart.


The model calculates the effects of land use changes in catchment areas in each of the aquatic ecosystems listed. For rivers and floodplain wetlands, the model also describes the effect of human interventions (e.g., through dam construction or climate change) on the hydrology on biodiversity. From a biodiversity perspective, reservoirs are considered as heavily modified river stretches. GLOBIO is also used to compute the probability of the dominance of harmful algal blooms of cyanobacteria (blue-green algae) in lakes, which often coincides with shifts in food webs and biodiversity loss, and which interferes with the human use of these systems.
The model calculates the effects of land use changes in catchment areas in each of the aquatic ecosystems listed. For rivers and floodplain wetlands, the model also describes the effect of human interventions (e.g., through dam construction or climate change) on the hydrology on biodiversity. From a biodiversity perspective, reservoirs are considered as heavily modified river stretches. GLOBIO is also used to compute the probability of the dominance of harmful algal blooms of cyanobacteria (blue-green algae) in lakes, which often coincides with shifts in food webs and biodiversity loss, and which interferes with the human use of these systems.
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The MSA value for each water body (river, lake, wetland) is calculated by multiplying the values for the relevant drivers. The final indicator, aquatic MSA, is calculated by area-weighted averaging of MSA values for rivers, lakes and wetlands. In addition to MSA, the probability of dominance of harmful algal blooms of cyanobacteria in lakes is calculated as a biodiversity indicator, based on P concentration, N:P ratio, and water temperature ([[Håkanson et al., 2007]]. The results are expressed as the proportion of lakes with a cyanobacteria biomass above the WHO standard.
The MSA value for each water body (river, lake, wetland) is calculated by multiplying the values for the relevant drivers. The final indicator, aquatic MSA, is calculated by area-weighted averaging of MSA values for rivers, lakes and wetlands. In addition to MSA, the probability of dominance of harmful algal blooms of cyanobacteria in lakes is calculated as a biodiversity indicator, based on P concentration, N:P ratio, and water temperature ([[Håkanson et al., 2007]]. The results are expressed as the proportion of lakes with a cyanobacteria biomass above the WHO standard.


A more detailed description of the model is published in ([[Alkemade et al., 2011b]]; [[Janse et al., submitted]]).  
A more detailed description of the model is published in ([[Alkemade et al., 2011b]]; [[Janse et al., submitted]]).
 
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Revision as of 09:01, 24 June 2014