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Analysis of the species description process for a little known invertebrate group: the limnoterrestrial tardigrades (Bilateria, Tardigrada)

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Part of the book series: Topics in Biodiversity and Conservation ((TOBC,volume 5))

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Abstract

This study was designed to examine the entire species description process of limnoterrestrial tardigrades up until the present, and to establish the effects of several variables on this process. Information from monographs, revisions and published papers related to limnoterrestrial tardigrades was assessed using generalized linear models (GLM) and variance partition. Our findings reveal the tardigrade species description process fails to show an asymptotic tendency. That is, at the current description rate, we will not get to know all the species in the short- or mid-term. The variables examined served to explain about half of the process variance. Species distribution areas and variables related to their presence in each region were the factors found to have the greatest explanatory capacity. Our analysis indicates that insufficient efforts have been invested in the tardigrades compared to other invertebrates (such as Insecta: Coleoptera), and that there is a need for more taxonomists and more extensive sampling areas. Studies such as this will be useful for planning future species sampling campaigns, and help us to improve our methodological approach to investigations aimed at conservation and the preservation of biodiversity.

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Abbreviations

GLM:

Generalized linear models

LR:

Linear regression analysis

Pal:

Palaearctic region

Afr:

Afrotropical region

Ori:

Oriental region

Aus:

Australian region

Nea:

Nearctic region

Neo:

Neotropical region

Ant:

Antarctic region

TAX:

taxonomic variables

Class:

categorical variables related to the species taxonomic class

DIST:

distributional variables

NReg:

continuous variables representing the number of biogeographic regions in which each species exists

LOC:

a group of categorical variables related to location of each species

RegType:

variable referred to the biogeographic region in which the species was described

ORIG:

variable related to the biogeographic region of author’s place of origin.

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  1. Noemí Guil

    Present address: Department of Organismic and Evolutionary Biology, Harvard University, BioLabs 1113, Divinity Avenue, Cambridge, Massachusetts, 02138, USA

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  1. Museo Nacional de Ciencias Naturales, Dpto Biodiversidad y Biología Evolutiva, José Gutiérrez Abascal 2, 28006, Madrid, Spain

    Noemí Guil

  2. Instituto de Ecología, A.C. Dpto, Biodiversidad y Ecología Animal, Km 2,5, Ctra antigua a Coatepec 351, Congregación El Haya, 91070, Xalapa, Veracruz, México

    Francisco J. Cabrero-Sañudo

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Guil, N., Cabrero-Sañudo, F.J. (2006). Analysis of the species description process for a little known invertebrate group: the limnoterrestrial tardigrades (Bilateria, Tardigrada). In: Hawksworth, D.L., Bull, A.T. (eds) Vertebrate Conservation and Biodiversity. Topics in Biodiversity and Conservation, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6320-6_16

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