# ENM - BIOCLIM 1

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Disperse the groups of techniques or for growing niche models
I'll XXXXXX simplest ones
actually the 3rd one was developed like in the late seventies
and the first paper of this is from the mid eighties
so it's not a new method, but still it is very useful
many people will use BIOCLIM in a XXXXXXXX basis
and it's a very neat idea, very neat XXXXtation
it is very very simple
you might without XXXX powered by XXXXXXXXXX
in forcing buying a lot of space and we have the distribution of our sampling for our calibration data
across this biome
This is made of all XXXXXXXXXXX XXXXXXXXXXXX or disXXXXXX boxes
are around the calibration points
in each one of our multi-dimension XXXXXXX space
so this is one XXXXXXXX, we have another XXXXXXXXX
without the same set of points in this sort of environment
and XXXXXXXXXXXXXX box in each one of the dimensions and in this way
it constructs this envelope which represents the niche of the species
then in projects, this envelope, the geographic space and produces this potential distribution map
as you can see XXXXXXXXX
then it could be slightly affected by out liers
so to avoid the XXXXXXXXX effect of out-liers you should build these huge boundary?? boxes
they chunk the edges of these boundary boxes by perseverance??? or using standard deviations of some XXXXXXX
on how to chunk XXXXX of this course
and you get your envelope, this is the easiest and the simplest method
and after this development there has been tens of methods of how to XXXXXXXX development XXXXXXXX dimension
and these BIOCLIM and all the distance methods use presence only
so they are not affected by this situations that Town was pointing out of selecting XXXXXXXXX
then there is a group of medals that are developed based on measuring distances in the environmental space
multi dimensional distances in environmental space
for example this is the euclidean distance in which it calculates
the distance in.. you have to XXXXXXX a group of calibrated points in environmental space
XXXXXXXXXXXXXXXXXXXXX
here in blue and it's basically classification XXXXXXX
it estimates some measurements of XXXXXXXXXXXXX like the mean and the standard deviation
and based on these measurements calculates the distance of each one of the pixels
the XXXXXXXXXXX to see each one of these pixels belong
to the group of pixels withinn these standard deviation areas
and projects against the map that the niche model on to geography and for XXXXXX
there are several ways of measuring distances in environmental space XXXXXX multi-dimensional space
this is one thing.. and this is another one in XXXXXXXX XXXXXXXXXX
which is particularly useful when you have the American XXXXX????
be cause it is calculated based on the corelation matrix and environments
so the shape of the environmental space is XXXXXXXX. it's more like an elongated elipsoid
so in this case for example the distance of this point to the mean is closer than this point to the mean
because of this shape produced by XXXXXXXXX of the environments???
but it's exactly the same idea, and there are all XXXXXXXXXX distance XXXXXXXXXX like the XXXXXXX matrix
which is based on calculations of mechanical distances
this is a comparison between a distance between 2 points, this is one point, this is another point
the euclideon distance would be aligned join the points
and they might have the distance XXXXXXXXXXXXXXXXXXXXXXXXXXX
that you need to go to following squares
measure the distance
and there is another matrix of distance called the XXXXXXXXXXX
in which the rule of measuring distance is by inches
the movements of the king you know XXXXXXXXXXXXXX
the lateral or diagonal, that's the way it works
but these old methods are based on the same old principle about measuring distances with their equal XXXXXX
any questions about this?
no questions?
QUESTION: you said the best method of XXXXXXX of using this model is BIOCLIM.
and distance is XXXXXXX. and you also showed that you XXXXXXX distances
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
I'm asking the first methodology of XXXXXXXX niche XXXXX when XXXX is BIOCLIM and distance is XXXXXXXXXXXXX
and I also went ahead and showed that method XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX distance and
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX is it the same thing or another distance?
So Enrique it's rather XXXXXXXX BIOCLIM which is simply a set based approach
simply those limits among each dimension
and the other was distance based approaches, will show you several different distances
Eventually XXXX distance where from here to there in an environmental space is a pretty complex question
and so it could be euclideon, XXXXXXXXX, XXXXXX distances different types of distances
but it all comes under a class of approaches
so it's BIOCLIM versus all these distance based approaches
the nice thing is they are all on the same XXXXX
they are all XXXXXXXXXXX, so if you learn one you can pretty much do all
we are going to go to a niche model exercise
with the data you have in your USB
so I XXXXXXXXXX you have installed your own model softwares into your computers
because we are going to use it now
At this stage simply try to follow along
if you have open models or working, great, see if you can clip a model with Enrique
but most imoprtant thing is pay attention to what he is doing
so if you don't have open modeller running or haven't yet figured out where the files are
pay attention to what he is doing because we are going to work with you guys XXXXXXXX yesterday afternoon
this is one of the platforms of XXXXXXXX that has been built for handling multiple algorithms or niche models
which is one of its strngths
and it was developed in Brazil like 10 years ago
and at one point it was kind of abandoned
and now we are retaking open modeller to give a new face
of this platform
sometimes it's a bit unstable
it crashes or it doesn't find a reason why its's not working
but in general terms its a reliable software
you can use it normally with no problems most of the times
so we are going to do this exercise for you to start getting familiar with this platform
use only one model for one species you have in your USB
and see how XXXXXX u can XXXX the whole process