Cladistics
Cladistics 28 (2012) 317–329 10.1111/j.1096-0031.2011.00385.x
Detecting areas of endemism with a taxonomically diverse data set: plants, mammals, reptiles, amphibians, birds, and insects from Argentina
Claudia Szumika,*, Lone Aagesenb, Dolores Casagrandaa, Vanesa Arzamendiac, Diego Baldod, Lucı´a E. Clapsa, Fabiana Cuezzoa, Juan M. Dı´az Go´meze, Adria´n Di Giacomof, Alejandro Giraudoc, Pablo Goloboffa, Cecilia Gramajog, Cecilia Kopuchianh, Sonia Kretzschmard, Mercedes Lizarraldea, Alejandra Molinaa, Marcos Mollerachi, Fernando Navarroa, Soledad Nomdedeub, Adela Panizzab, Vero´nica V. Pereyraa, Marı´a Sandovali, Gustavo Scrocchid and Fernando O. Zuloagab
aInstituto Superior de Entomologı´a (INSUE-CONICET), Miguel Lillo 205, 4000 Tucuma´n, Argentina; bInstituto de Bota´nica Darwinion (CONICET-ANCEFN), Labarden 200, CC22, San Isidro, B1642HYD Buenos Aires, Argentina; cInstituto Nacional de Limnologı´a (CONICET-UNL), Ciudad Universitaria, El Pozo s ⁄ n, 3016 Santa Fe, Argentina; dInstituto de Herpetologı´a (FML), Miguel Lillo 251, 4000 Tucuma´n, Argentina; eInstituto de Bio y Geociencias (IBIGEO), Facultad de Ciencias Naturales, Mendoza 2, 4400 Salta, Argentina; fLaboratorio de Ecologı´a y Comportamiento Animal (FCEN-UBA), Ciudad Universitaria, C1428EHA Buenos Aires, Argentina; gDivisio´n Entomologı´a (FML), Miguel Lillo 251, 4000 Tucuma´n, Argentina; hDivisio´n Ornitologı´a (MACN), Av. Angel Gallardo 470, C1405DJR Buenos Aires, Argentina; iPrograma de investigaciones en Biodiversidad Argentina (PIDBA-FCN), Miguel Lillo 205, 4000 Tucuma´n, Argentina Accepted 16 October 2011
Abstract
The idea of an area of endemism implies that different groups of plants and animals should have largely coincident distributions. This paper analyses an area of 1152 000 km2, between parallels 21 and 32 S and meridians 70 and 53 W to examine whether a large and taxonomically diverse data set actually displays areas supported by different groups. The data set includes the distribution of 805 species of plants (45 families), mammals (25 families), reptiles (six families), amphibians (five families), birds (18 families), and insects (30 families), and is analysed with the optimality criterion (based on the notion of endemism) implemented in the program NDM ⁄VNDM. Almost 50% of the areas obtained are supported by three or more major groups; areas supported by fewer major groups generally contain species from different genera, families, or orders. The Willi Hennig Society 2011.
The present study aims to evaluate the distributional cover a wide array of diverse taxa is to have studies in concordance among a diverse group of taxa, by using an which numerous authors, with different specialties, optimality criterion specifically designed for detecting collaborate. areas of endemism. In other words, this is one of the first In the past two decades, a considerable number of approximations to analyse total evidence in a biogeo- empirical studies to define and quantify areas of graphical context. Studies of endemicity for taxonom- endemism have been published. Part of that production ically wide samples are difficult because specialists in a can be related to the development of different methods given group seldom have access to first-hand informa- of analysis, starting with parsimony analysis of ende- tion on the distribution of other groups; the only way to mism (PAE; Morrone, 1994), which highlighted the need to formalize and assess the identification of areas of *Corresponding author: endemism with clear and accessible protocols. Several E-mail address: [email protected] alternative methods followed PAE (e.g. Geraads, 1998;