Digital Reef Adaptive Potential Evaluator
Customize colorscale limits:
Customize colorscale limits:
Customize colorscale limits:
Customize colorscale limits:
Customize colorscale limits:
This panel allows you to choose on which region to work on. For the moment, only the reefs of New Caledonia are available.
The panel also allows to choose the background map type.
The digital reef represents a group of corals of different type ("coral models")
for which the connectivity and adaptive potential indices are computed.
This panel resumes the coral models added to the digital reef.
If you want to add a new coral model, click on the button.
For every coral model, the table shows:
A coral model represents a particular type of coral species or population. It is
described by two parameters: the connectivity model and the adaptive model.
In this panel you can choose which index to compute. Five different options are available:
The Inbound Connectivity Index (ICI) describes the estimated
dispersal towards each reef of the study area. This index is based on the connectivity models
of coral models in the digital reef.
For a specific reef, the ICI represents the total area of the
surrounding reefs that can disperse towards the specific reef. The maximal distance of
"surrounding reefs" depends on the Fst threshold (Fst-I) specified before computation.
A low Fst threshold will account for the reefs closely surrounding a focal reef, while
a higher value will include further reefs in the calculation.
The Fst threshold should not exceed the recommended value, in order to avoid bias due
to border effects.
A high ICI indicates a reef receiving dispersal from a large reef
surface, while a low ICI a reef receiving limited dispersal (i.e. potentially isolated reef).
If you want to compare ICI for different coral models, or different digital reefs, make sure
to use a common Fst threshold (not exceeding the recommended values) and to set
fixed limits in the color scale by clicking on the corresponding checkbox ().
The Outbound Connectivity Index (OCI) describes the estimated
dispersal from each reef of the study area. This index is based on the connectivity models
of coral models in the digital reef.
For a specific reef, the OCI represents the total area of the
surrounding reefs that can disperse to from the specific reef. The maximal distance of
"surrounding reefs" depends on the Fst threshold specified (Fst-O) before computation.
A low Fst threshold will account for the reefs closely surrounding a focal reef, while
a higher value will include further reefs in the calculation.
The Fst threshold should not exceed the recommended value, in order to avoid bias due
to border effects.
A high OCI indicates a reef dispersing to a large reef
surface (i.e. potential source for the reef system), while a low OCI a reef with limited dispersal potential.
If you want to compare OCI for different coral models, or different digital reefs, make sure
to use a common Fst threshold (not exceeding the recommended values) and to set
fixed limits in the color scale by clicking on the corresponding checkbox ().
The Adaptive Potential Index (API) describes the estimated
adaptive potential for every reef of the study area. This index is based on the adaptive model
of corals in the digital reef.
For a specific reef, the API represents the probability of adaptation to a specific climatic constraint.
If more than one coral is present in the digital reef panel, the API represents the average probability between all the corals in the digital reef.
In this case, be aware that the adaptive models describing the digital reef should be based on the same environmental variables.
If you want to compare API for different coral models, or different digital reefs, make sure
to leave fixed limits in the color scale.
The MPA-ICI allows to estimate the potential dispersal from marine protected areas (MPAs) set-ups
defined by the user.
By clicking on the button, the user can draw one or polygon
representing MPAs. The algorithm then computes Inbound Connectivity Index (ICI) from these areas.
The button allows to remove MPAs previously drawn.
The ICI describes the estimated
dispersal towards each reef of the study area. This index is based on the connectivity models
of coral models in the digital reef.
For a specific reef, the MPA-ICI represents the total area of the
surrounding reefs inside the MPAs that can disperse towards the specific reef. The maximal distance of
"surrounding reefs" depends on the Fst threshold (Fst-I) specified before computation.
A low Fst threshold will account for the reefs closely surrounding a focal reef, while
a higher value will include further reefs in the calculation.
The Fst threshold should not exceed the recommended value, in order to avoid bias due
to border effects.
A high MPA-ICI indicates a reef receiving dispersal from a large reef
surface of the MPAs, while a low MPA-ICI a reef receiving limited dispersal from the MPAs.
If you want to compare MPA-ICI for different coral models, different digital reefs or different MPA set-ups, make sure
to use a common Fst threshold (not exceeding the recommended values) and to set
fixed limits in the color scale by clicking on the corresponding checkbox ().
The CN-ICI allows to estimate the potential dispersal from coral nurseries (CNs) emplacements
defined by the user.
By clicking on the button, the user can select on which reef(s)
to establish a CN. The algorithm then computes Inbound Connectivity Index (ICI) from this reef(s).
The button allows to remove CNs previously added.
The ICI describes the estimated
dispersal towards each reef of the study area. This index is based on the connectivity models
of coral models in the digital reef.
For a specific reef, the CN-ICI represents the total area of the
surrounding reefs set as CNs that can disperse towards the specific reef. The maximal distance of
"surrounding reefs" depends on the Fst threshold (Fst-I) specified before computation.
A low Fst threshold will account for the reefs closely surrounding a focal reef, while
a higher value will include further reefs in the calculation.
The Fst threshold should not exceed the recommended value, in order to avoid bias due
to border effects.
A high CN-ICI indicates a reef receiving dispersal from a large reef
surface of reefs set as CN, while a low CN-ICI a reef receiving limited dispersal from the CNs.
If you want to compare CN-ICI for different coral models, different digital reefs or different CNs emplacements, make sure
to use a common Fst threshold (not exceeding the recommended values) and to set
fixed limits in the color scale by clicking on the corresponding checkbox ().
In this tutorial, you will learn the basis for using the DREPEAU tool.
As you will see, most of the buttons are currently inactivated. They will activate as you move forward with the tutorial.
If you are stuck, you can click on the top-left corner button to visualize the instructions.
The first thing we need to do is to specify for which coral species we want to run the predictions. In our case, we will focus on
A. millepora.
To do so, click on the button in the digital reef panel.
In order to add a coral to the digital reef, we have to specify what kind of coral we are working on.
More specifically, we have to set how this coral is expected to disperse (connectivity model) and how this coral is expected
to adapt to an
environmental condition of interest (adaptive model).
This information is provided by the presets that correspond to the findings of seascape genomics studies.
Select the connectivity model and the adaptive model for A. millepora in New Caledonia using the dropdown lists.
Once you'll have selected the correct models, you will be able to click on the button.
A. millepora is now added to the digital reef panel. We can therefore start calculating the conservation indices.
We will start with the inbound connectivity index. This index will inform us on which reefs are expected to be more or less
easy to reach from the rest of the reef system.
You will notice that now the button is now
activated, click on it.
A menu will open on the top right corner of the map. In this menu you can customize the calculations of the inbound connectivity index.
For instance, you can calculate connectivty at a larger scales (higher Fst), or modify the colorscale for the representation on the map.
In this tutorial, however, we will focus on the basis and these options are locked.
Click on the to calculate the inbound connectivity index.
The ICI is now calculated, you can explore the distribution of this index across the map.
Can you tell which reef areas are expected to be more isolated?
Once you are done, click on the button to move on to the next step.
We now move to the next step and calculate the other side of connectivity: the outbound connectivity index.
This index decribes how each reef is expected to disperse towards its neighbors.
The button is now activated, click on it.
In order to run the computation, you will have to click on the button.
The OCI is now calculated, you can explore the distribution of this index across the map.
Can you tell which reef areas can be considered source of coral for the rest of the reef system of New Caledonia?
Once you are done, click on the button to move on to the next step.
We now calculate the adaptive potential index for thermal variation in october.
The button is now activated, click on it.
In order to run the computation, you will have to click on the button.
The API is now calculated, you can explore the distribution of this index across the map.
Can you tell which reef areas are expected to be more or less adapted for this environmental variable?
Once you are done, click on the button to move on to the next step.
We will now use an interactive mode to predict the connective potential of MPAs.
By calculating the inbound connectivity index from a MPA, we will be able to
evaluate how the reefs of the MPA would be connected to the neighboring reefs.
The button is now activated, click on it.
You can use the button to activate the MPA drawing mode. When activated, this mode
allows you to draw the MPA directly on the map. You can draw as many MPAs as you want.
If you want to remove a previously drawn MPA, click on the button and then select the
MPA you want to remove.
Test different MPAs locations. Do you see areas that could provide a connective advantage?
When you are done, click on the
button to export your work in a PDF format.
You reached the end of this tutorial.
You now know how to use the main functionalities of DRAPEAU.
If you have further questions when using the app, try to have a look at the
help buttons ( ) documentation.
To use the complete version of DRAPEAU, go to:
www.dreapeausable.com/completeversion