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First Time At Niche Modeling?
This is a blog on the power of numeracy. My first book — Niche Modeling — is now in print.The first six chapters are tutorial topics in R programming and theoretical topics in niche modeling: functions, data, spatial, topology, environmental data collections, and examples. The last six chapters are about using niche modeling to detect errors: bias, autocorrelation, non-linearity, long term persistence, circularity and fraud - useful information for any biological modeler.
March 28, 2006
WhyWhere 2.0 update
I was wondering if the dataset used with whywhere includes attributes of river variables. I am speaking about channel width, reach gradient, mean annual flow, etc. I am intersted in modeling potential species distributions in a riverine network. Any insight would be valuable…The hydro1k data set is included. Alist of variables is at http://edc.usgs.gov/products/elevation/gtopo30/hydro/namerica.html
Biodiversity section is a latest initiative and we want to use desktopGARP. It seems very useful for our research work. We are having problems in running it and understanding the results. We were hoping that if there was a detailed manual that could help us with more understanding of this software.All questions regarding DesktopGARP should go to the list for the purpose at http://www.cria.org.br/mailman/listinfo/desktopgarp.
I would like to use WhyWhere for predicting coral species distributions. Since I’m not familiar with the software and whether the model can meet my needs, I would like to try the web version first. However, I cannot open the webpage to the web version of WhyWhere. Is the link removed? Where will I be able to get access to WhyWhere web version? Or must I download the window version?I have unlinked the web server version of WhyWhere as I don’t intend to support it long-term, and will soon have a new server version. The desktop version can be downloaded and works fine. It does however require a few packages to be installed for use by the Perl modules. People have found this a bit of a hurdle.
Do you have a time estimate available for when the WhyWhere version 2.0 portal and FAQ and ToDo List documents will be available? As part of a project for class and as part of my masters work I am investigating the various models available. I am interested in trying the WhyWhere model out for the class project, but want to make sure I’ll have all of the necessary information in time to complete the project. If not everything will be available, I will likely do my class project with Desktop GARP instead.My best estimate is a week or two. Sorry I can’t be more precise. I have had to move all my stuff onto a new server, but this will be a permanent home from now on. Version 2.0 should be much better and easier to use.
I would like to know if the GARP model is suitable for use on smaller areas (roughly 150 000 ha) and if so, would the pre-processed dataset of North America be usable in this case or would we have to create our own? Also, I’ve noticed that the section in the user’s manual on Climate Change is under construction and I was wondering if there has been any progress or anywhere else I might be able to learn a bit more about the model’s ability to function using climate change scenarios. Lastly, if possible, would you be able to let me know what the 0 of the parameters in the dataset layers for North America represent?If you are interested in DesktopGARP go to the list above. To work at that scale you would need vegetation data from satellite. I have a few layers, the continuous fields dataset from Uni Maryland that will be available in WhyWhere. Other than that you would need to get your own. Climate change predictions are possible (by saving a model, then reapplying it to shifted variables). I have no shifted variables available in the WhyWhere database however.
AIG Article
The Australian Institute of Geoscientists News has published online my article “Reconstruction of past climate using series with red noise” on page 14. Many thanks to Louis Hissink the editor for the rapidity of this publication. It is actually a very interesting newsletter with articles on the IPCC, and a summary of the state of the hockey stick (or hokey stick). There are articles on the K-T boundary controversy and how to set up an exploration company.
Reconstructing the hokey stick with random data neatly illustrates the c



