Taxonomic impediment

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Conservationists, ecologists, biodiversity scientists, lawmakers, and many others rely heavily on taxonomic information to manage, conserve, use, and share our biodiversity. The world-wide shortage of this important taxonomic information, the gaps in our taxonomic knowledge, and the shortage of trained taxonomists and curators to fill this need has come to be known as the taxonomic impediment. The importance of this phenomenon was recognized by the Convention on Biological Diversity, signed at the 1992 Rio Earth Summit, [1] and initiatives have occurred that have not yet solved the problem. [2]

Contents

The greatest contributions of taxonomy to science and humanity are yet to come. Against formidable odds and with minimal funding, equipment, infrastructure, organization and encouragement, taxonomists have discovered, described, and classified nearly 1.8 million species. While increasing attention is being paid to making this substantial amount of accumulated taxonomic information more easily accessible, comparatively little attention has been paid to opening access to the research resources required by taxonomists themselves. Benefits associated with ease of access to museum records (e.g. Global Biodiversity Information Facility) or 'known' species (e.g. Encyclopedia of Life) are seriously restricted when such information is untested for validity or is simply unavailable, as is the case for three-quarters or more of the species on Earth. We act as if taxonomy is done but nothing could be farther from the truth.

The term "taxonomic impediment"

The history of the term "taxonomic impediment" can be traced, with the first documented use in any context being in 1976, [3] though this and a few later uses were made with regards to "aspects of taxonomic poverty other than lack of taxonomic expertise." [4] It was not until the Conference of the Parties to the Convention on Biological Diversity (COP 2) meeting in Jakarta in 1995 that the term "taxonomic impediment" was first used in the modern sense, referring explicitly to a shortage of taxonomists and lack of support for their research, [4] and subsequently first formally published in the broader scientific literature in 1996. [5]

Impediments to taxonomy

The causes of the current crisis in taxonomy have been ascribed to a loss of perspective in ecology [6] and evolutionary biology as the modern evolutionary synthesis developed during the 1930s and 40s: a conflation of "pattern with process", [7] "confusing the methods and goals of the emerging science of population genetics with those of the established science of taxonomy", [7] which caused the traditional fundamental taxonomy to be disparaged, and consequently underfunded.

It is argued that some initiatives that aim to bypass the bottleneck of insufficient taxonomic expertise continue to draw funds away from solving the fundamental problem. [8] [9] [10]

See also

Related Research Articles

<span class="mw-page-title-main">Convention on Biological Diversity</span> International treaty on biological diversity

The Convention on Biological Diversity (CBD), known informally as the Biodiversity Convention, is a multilateral treaty. The Convention has three main goals: the conservation of biological diversity ; the sustainable use of its components; and the fair and equitable sharing of benefits arising from genetic resources. Its objective is to develop national strategies for the conservation and sustainable use of biological diversity, and it is often seen as the key document regarding sustainable development.

In biology, taxonomy is the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum, class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms.

<span class="mw-page-title-main">Biodiversity</span> Variety and variability of life forms

Biodiversity is the variability of life on Earth. It can be measured on various levels. There is for example genetic variability, species diversity, ecosystem diversity and phylogenetic diversity. Diversity is not distributed evenly on Earth. It is greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than one-fifth of Earth's terrestrial area and contain about 50% of the world's species. There are latitudinal gradients in species diversity for both marine and terrestrial taxa.

<span class="mw-page-title-main">Family (biology)</span> Taxonomic rank between genus and order

Family is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family".

<span class="mw-page-title-main">Taxon</span> Grouping of biological populations

In biology, a taxon is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based ("Linnaean") nomenclature. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping.

<span class="mw-page-title-main">Polyphyly</span> Property of a group not united by common ancestry

A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly. It is contrasted with monophyly and paraphyly.

The International Code of Phylogenetic Nomenclature, known as the PhyloCode for short, is a formal set of rules governing phylogenetic nomenclature. Its current version is specifically designed to regulate the naming of clades, leaving the governance of species names up to the rank-based nomenclature codes.

<span class="mw-page-title-main">Daniel Simberloff</span> American ecologist and professor

Daniel Simberloff is an American biologist and ecologist. He earned his Ph.D. from Harvard University in 1969. He is currently Gore Hunger Professor of Environmental Science at the University of Tennessee, editor-in-chief of the journal Biological Invasions, and a member of the National Academy of Sciences.

<span class="mw-page-title-main">Functional ecology</span>

Functional ecology is a branch of ecology that focuses on the roles, or functions, that species play in the community or ecosystem in which they occur. In this approach, physiological, anatomical, and life history characteristics of the species are emphasized. The term "function" is used to emphasize certain physiological processes rather than discrete properties, describe an organism's role in a trophic system, or illustrate the effects of natural selective processes on an organism. This sub-discipline of ecology represents the crossroads between ecological patterns and the processes and mechanisms that underlie them.

<i>Encyclopedia of Life</i> Free, online collaborative encyclopedia that documents species

The Encyclopedia of Life (EOL) is a free, online encyclopedia intended to document all of the 1.9 million living species known to science. It aggregates content to form "pages" for every known species. Content is compiled from existing trusted databases which are curated by experts and it calls on the assistance of non-experts throughout the world. It includes video, sound, images, graphics, information on characteristics, as well as text. In addition, the Encyclopedia incorporates species-related content from the Biodiversity Heritage Library, which digitizes millions of pages of printed literature from the world's major natural history libraries. The BHL digital content is indexed with the names of organisms using taxonomic indexing software developed by the Global Names project. The EOL project was initially backed by a US$50 million funding commitment, led by the MacArthur Foundation and the Sloan Foundation, who provided US$20 million and US$5 million, respectively. The additional US$25 million came from five cornerstone institutions—the Field Museum, Harvard University, the Marine Biological Laboratory, the Missouri Botanical Garden, and the Smithsonian Institution. The project was initially led by Jim Edwards and the development team by David Patterson. Today, participating institutions and individual donors continue to support EOL through financial contributions.

<span class="mw-page-title-main">David J. Patterson</span> Northern Irish taxonomist (born 1950)

David Joseph Patterson is a Northern Irish taxonomist specializing in protozoa and the use of taxonomy in biodiversity informatics.

<span class="mw-page-title-main">Species</span> Basic unit of taxonomic classification, below genus

A species is a population of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour, or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species are given a two-part name, called a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet. For example, Boa constrictor is one of the species of the genus Boa, with constrictor being the species' epithet.

Genetic monitoring is the use of molecular markers to (i) identify individuals, species or populations, or (ii) to quantify changes in population genetic metrics over time. Genetic monitoring can thus be used to detect changes in species abundance and/or diversity, and has become an important tool in both conservation and livestock management. The types of molecular markers used to monitor populations are most commonly mitochondrial, microsatellites or single-nucleotide polymorphisms (SNPs), while earlier studies also used allozyme data. Species gene diversity is also recognized as an important biodiversity metric for implementation of the Convention on Biological Diversity.

A variety of objective means exist to empirically measure biodiversity. Each measure relates to a particular use of the data, and is likely to be associated with the variety of genes. Biodiversity is commonly measured in terms of taxonomic richness of a geographic area over a time interval. In order to calculate biodiversity, species evenness, species richness, and species diversity are to be obtained first. Species evenness is the relative number of individuals of each species in a given area. Species richness is the number of species present in a given area. Species diversity is the relationship between species evenness and species richness. There are many ways to measure biodiversity within a given ecosystem. However, the two most popular are Shannon-Weaver diversity index, commonly referred to as Shannon diversity index, and the other is Simpsons diversity index. Although many scientists prefer to use Shannon's diversity index simply because it takes into account species richness.

An all-taxa biodiversity inventory, or ATBI, is an attempt to document and identify all biological species living in some defined area, usually a park, reserve, or research area. The term was coined in 1993, in connection with an effort initiated by ecologist Daniel Janzen to document the diversity of the Guanacaste National Park in Costa Rica.

<span class="mw-page-title-main">Index of biodiversity articles</span>

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<span class="mw-page-title-main">Quentin D. Wheeler</span> American entomologist (born 1954)

Quentin Duane Wheeler is an American entomologist, taxonomist, author and newspaper columnist, and is the founding director of the International Institute for Species Exploration. He was the fourth President of the State University of New York College of Environmental Science and Forestry, in Syracuse, New York until his retirement. Other positions have included: professor of entomology at Cornell University and Arizona State University; Keeper and Head of Entomology at the Natural History Museum in London; and Director of the Division of Environmental Biology at the National Science Foundation.

Samuel James is an American scientist, a researcher specializing in evolutionary biology, focusing on earthworm taxonomy. James, with fellow researchers, has discovered numerous species of annelids, including Diplocardia californiana, Diplocardia woodi, Diplocardia montana, and a new species related to the Giant Palouse earthworm.

Jeannine Cavender-Bares is Professor of Organismic and Evolutionary Biology at Harvard University and Director of the Harvard University Herbaria. She is also adjunct professor in the Department of Ecology, Evolution & Behavior at the University of Minnesota, where she served on the faculty for over two decades. Her research integrates evolutionary biology, ecology, and physiology by studying the functional traits of plants, with a particular focus on oaks.

Brent D. Mishler is an American botanist who from was the director of the University and Jepson Herbaria at the University of California, Berkeley, from 1993 to 2023. He was also a professor in the Department of Integrative Biology, where he taught phylogenetics, plant diversity, and island biology. Following his retirement in 2024 he is now Distinguished Professor Emeritus and Curator of Bryophytes, and continues an active research program.

References

  1. "Convention on Biological Diversity: the Global Taxonomic Initiative". 20 March 2020.
  2. Wheeler, Q.D. (2008). "Taxonomic shock and awe". In Q.D. Wheeler (ed.). The New Taxonomy. Vol. 76. Boca Raton: CRC Press. pp. 211–226.
  3. Taylor, R.W. (1976) Submission to the Australian Senate Standing Committee on Social Environment Inquiry into the impact on the Australasian environment of the current Woodchip Industry Programme pp. 3724–3731. Australian Senate Official Hansard, Canberra.
  4. 1 2 Evenhuis, N.L. (2007). Helping solve the “other” Taxonomic Impediment: Completing the eight steps to Total Enlightenment and Taxonomic Nirvana. Zootaxa 1407: 3-12.
  5. Hoagland, K.E. (1996) The taxonomic impediment and the Convention of Biodiversity. Association of Systematics Collections Newsletter 24: 61–62, 66–67.
  6. Bortolus A. 2008. Error cascades in the biological sciences: the unwanted consequences of using bad taxonomy in ecology. AMBIO 37: 114-118.
  7. 1 2 Wheeler, Q.D. (2008). "Introductory: Toward the New Taxonomy". In Q.D. Wheeler (ed.). The New Taxonomy. Vol. 76. Boca Raton: CRC Press. pp. 1–17.
  8. de Carvalho, M.R.; Bockmann, F.A.; Amorim, D.S.; Brandao, C.R.F.; de Vivo, M.; de Figueiredo, J.L.; Britski, H.A.; de Pinna, M.C.C.; Menezes, N.A.; Marques, F.P.L.; Papavero, N.; Cancello, E.M.; Crisci, J.V.; McEachran, J.D.; Schelly, R.C.; Lundberg, J.G.; Gill, A.C.; Britz, R.; Wheeler, Q.D.; Stiassny, M.L.J.; Parenti, L.R.; Page, L.M.; Wheeler, W.C.; Faivovich, J.; Vari, R.P.; Grande, L.; Humphries, C.J.; DeSalle, R.; Ebach, M.C.; Nelson, G.J. (2007). "Taxonomic impediment or impediment to taxonomy? A commentary on systematics and the cybertaxonomic-automation paradigm". Evolutionary Biology. 34 (3–4): 140–143. doi:10.1007/s11692-007-9011-6.
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  10. Bortolus, A., 2012b. Good habits come first in Science too: a reply to Straka and Starzomski. Trends Ecol. Evol. 27, 655.