Hi everyone,<div><br></div><div>I have a few questions about using Migration and how/if it feeds into the Biomod.RangeSize function. I produced current and future distributions using Ensemble.Forecasting, but now I would like to add more realism using the Migration() function and the dispersal parameter MaxMigr. I understand that the MaxMigr units have to be in decimal degrees, but no matter if MaxMigr = 1000 or MaxMigr = 0.16667, the resulting objects (Future20a1b.Migration in my case) are completely identical in terms of probability values.</div>
<div><div><br></div><div><div><i>Migration(CurrentPred = Total_consensus_Current[,,2], FutureProj = Total_consensus_Future20a1b[,,2],</i></div><div><i>X=LatLong[,1], Y=LatLong[,2], MaxMigr=100, Pred.Save="Future20a1b.Migration")</i></div>
</div><div><br></div><div>Moreover, when trying to plot the Current, Limited Dispersal and Unlimited Dispersal distributions, the latter 2 look identical (again, regardless of the value given to MaxMigr) </div><div><div>
<br></div><div><i>par(mfrow=c(1,3))</i></div><div><i>level.plot(Resp.Var[,'Sp21'], XY=LatLong, show.scale=FALSE, title="current distribution", cex=0.8)</i></div><div><i>level.plot(Future20a1b.Migration[,21], XY=LatLong, show.scale=F, title="limited migration", cex=0.8)</i></div>
<div><i>level.plot(Total_consensus_Future20a1b_Bin[,21,2], XY=LatLong, show.scale=FALSE, title="unlimited migration", cex=0.8)</i></div></div><div><br></div><div>Am I doing something wrong with Migration? Also, does the information from Migration feed into the RangeSize function? If so, it is not clear to me how...</div>
<div><br></div><div>Thanks in advance for any advice</div><div><br></div><div>Cheers,</div><div>Viorel</div><div><br></div><div><br></div><div><br></div>-- <br>Viorel D. Popescu, PhD<div>David H. Smith Conservation Research Fellow</div>
<div>University of California - Santa Cruz &</div><div>Simon Fraser University, Biological Sciences</div><br>
</div>