Hi Ajishnu Roy

I do not know if this is your main objective but you can at least group and also classify organisms based on their traits, life histories or strategies. There are some good examples: functional types, CSR strategies... I may indicate some publications depending on your aims. Regards Jose Macedo

Possibly the most complete data sets along these lines are for European plants. See a list of such data sets at:

http://uibm-de.sourceforge.net/04a3d89c5a0f60e01/04a3d89c5a0990409/

Thank you José António M Macedo Sir. My objective is ecological interaction-based characterization of organisms. And I would like to do this in quantitative way, not just positive/negative etc.

Thank you Serban Proches Sir. But as I requested earlier, how to distinguish one individual of a species from another individual of a same species based on ecological characters. Regards.

I am not an expert in genetics but probably you may apply genetic tools (e.g. new trends in metagenomics) for interactions patterns across networks or even considering one to one species relationships. See articles bellow. I hope they may help you. Regards

Knief C. Analysis of plant microbe interactions in the era of next generation sequencing technologies. Front Plant Sci [Internet]. Frontiers Media SA; 2014 May 21;5. Available from: http://dx.doi.org/10.3389/fpls.2014.00216

García-Robledo C, Erickson DL, Staines CL, Erwin TL, Kress WJ. Tropical Plant–Herbivore Networks: Reconstructing Species Interactions Using DNA Barcodes. Heil M, editor. PLoS ONE [Internet]. Public Library of Science (PLoS); 2013 Jan 8;8(1):e52967. Available from: http://dx.doi.org/10.1371/journal.pone.0052967

Toju H, Guimarães PR, Olesen JM, Thompson JN. Assembly of complex plant–fungus networks. Nat Comms [Internet]. Nature Publishing Group; 2014 Oct 20;5:5273. Available from: http://dx.doi.org/10.1038/ncomms6273

Guttman DS, McHardy AC, Schulze-Lefert P. Microbial genome-enabled insights into plant–microorganism interactions. Nature Reviews Genetics [Internet]. Nature Publishing Group; 2014 Sep 30;15(12):797–813. Available from: http://dx.doi.org/10.1038/nrg3748

Melcher U, Verma R, Schneider WL. Metagenomic search strategies for interactions among plants and multiple microbes. Front Plant Sci [Internet]. Frontiers Media SA; 2014 Jun 11;5. Available from: http://dx.doi.org/10.3389/fpls.2014.00268

Coats VC, Rumpho ME. The rhizosphere microbiota of plant invaders: an overview of recent advances in the microbiomics of invasive plants. Frontiers in Microbiology [Internet]. Frontiers Media SA; 2014 Jul 23;5. Available from: http://dx.doi.org/10.3389/fmicb.2014.00368

Silby MW, Cerdeño-Tárraga AM, Vernikos GS, Giddens SR, Jackson RW, Preston GM, et al. Genomic and genetic analyses of diversity and plant interactions of Pseudomonas fluorescens. Genome Biology [Internet]. Springer Science + Business Media; 2009;10(5):R51. Available from: http://dx.doi.org/10.1186/gb-2009-10-5-r51

Dear Roy,

What you mean by organisms-is it whole life-from bacteria to angiosperms/ mammals. There is no classification for 1.9 million described species as such based on ecological characters.

Classification currently not just considered for identification of taxa, but to relate the taxa on an evolutionary scale. Earlier conventional classifications or today phylogenetic classifications rely on many characters , in some cases at species level this may include ecological characters, mostly pertaining to habitats. 

Ravi prasad rao Boyina Sir, Thank you for your information. We know that taxonomy is now connected with molecular biology & evolution, especially phylogeny. So, my question is - If there is any work on connecting taxonomy with ecology i.e. ecology-based classification of organism.

Yes, we can classify organisms based of ecological categories. However, it depends on group or specific organisms, not for the entire living beings. As of general opinion, it is not possible also. For example, I will give you past and present evidences of ecological categories of earthworms, as far as I am concerned. 

http://www.sciencedirect.com/science/article/pii/S0929139397000577

http://www.mscwbif.org/earthworm/types.html

http://bioscience.oxfordjournals.org/content/52/9/801.full

Dear Roy,

No classification on living organisms at higher levels based on ecological never exists and it is not possible to do so. Because as I mentioned earlier any classification or any group of organisms cannot be classified by only by ecological character as every group is diversified. If you look at 10 lakhs of arthropod species, just by ecological character one cannot classify. However based on certain ecological characters rarely families; certain genera or species can be classified. For example at family level orchids can be classified into epiphytic, terrestrial, saprophytic etc.; lichens can be classified into crustose, foliose and fruticose etc. Genus Rhizophora can be classified as an entity as it is exclusively grown in saline habitats. However there are arbitrary classifications and needs to fit in the local/regional/national floras.