Biological & Ecological Classification

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Abstractions about placing organisms and landscapes into meaningful categories and patterns — taxonomic naming and phylogenetic relations (phylogenetic nomenclature, type species, sister groups), molecular and numerical identification (DNA barcoding, metabarcoding, numerical taxonomy), ecosystem and vegetation classification, and biodiversity patterns such as latitudinal gradients and umbrella species.

12 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Biodiversity Hotspot — A terrestrial region classified by the joint presence of at least 1,500 endemic vascular plant species and at least 70% loss of its original primary vegetation.
• DNA Barcoding — A biological identification method that compares a query organism's sequence at a standardized short DNA region with identified references to infer its taxonomic placement.
• Ecological Classification — Ecological classification or ecological typology is the classification of land or water into geographical units that represent variation in one or more ecological features.
• Latitudinal Gradients in Species Diversity — Latitudinal diversity gradients are recurrent, scale-qualified increases in species richness toward lower absolute latitudes, with real exceptions.
• Metabarcoding — An inference method that uses pooled barcode sequences from mixed biological material to estimate which taxa contributed to a sample.
• Monoculture — Cultivation of one intentionally planted crop or tree species in a specified managed field or stand during a specified production interval.
• Numerical taxonomy — Numerical taxonomy is a classification system in biological systematics which deals with the grouping by numerical methods of taxonomic units based on their character states.
• Phylogenetic nomenclature — Phylogenetic nomenclature names taxa by explicit reference to common ancestry and clade definitions rather than fixing names primarily through ranked taxonomic categories.
• Sister Group — In a rooted phylogenetic hypothesis, a sister group is the complete alternative branch descending immediately from the focal branch's ancestral fork.
• Type species — A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others.
• Umbrella species — Umbrella species are species selected for making conservation-related decisions, typically because protecting these species indirectly protects the many other species that make up the ecological community of its habitat (the umbrella effect).
• Vegetation Classification — Vegetation classification is the process of classifying and mapping the vegetation over an area of the Earth's surface.