So sánh phương pháp

	Phân tích Giá trị Chỉ thị	Phân vùng đa dạng Beta
Lĩnh vực	Sinh thái học	Sinh thái học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1997	2010
Người khởi xướng	Marc Dufrene and Pierre Legendre	Andres Baselga
Loại	species-habitat association analysis	community differentiation analysis
Công trình gốc	Dufrene, M., & Legendre, P. (1997). Species assemblages and indicator species: the need for a flexible asymmetrical approach. Ecological Monographs, 67(3), 345-366.	Baselga, A. (2010). Partitioning the turnover and nestedness components of beta diversity. Global Ecology and Biogeography, 19(1), 134-143.
Tên gọi khác	IndVal, indicator species, fidelity, specificity	beta diversity, species turnover, nestedness, community dissimilarity
Liên quan	4	4
Tóm tắt	Indicator Value (IndVal) analysis, developed by Dufrene and Legendre (1997), identifies species that reliably indicate the presence of particular environmental conditions, habitat types, or community groups. The method quantifies the association between species and habitat, producing an indicator value that combines specificity (exclusive preference for certain habitats) and fidelity (consistent presence when the habitat occurs). IndVal is widely used in conservation to identify species of management concern, in habitat typing to discover indicator species, and in restoration ecology to assess whether recovered communities match reference conditions.	Beta diversity partitioning quantifies how species composition differs among sites, decomposing community dissimilarity into two components: species turnover (replacement of species across sites) and nestedness (loss of species from species-rich sites). Developed by Baselga (2010), this framework reveals whether sites differ because they have different species (turnover) or because some sites are subsets of others (nestedness). This distinction has ecological and conservation implications: turnover suggests environmental heterogeneity or speciation, while nestedness suggests habitat loss or extinction.