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Article: Novel summary metrics for insular biotic assemblages based on taxonomy and phylogeny: Biogeographical, palaeogeographical and possible conservational applications
Title | Novel summary metrics for insular biotic assemblages based on taxonomy and phylogeny: Biogeographical, palaeogeographical and possible conservational applications |
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Authors | |
Keywords | assemblage classification conservation tool deep‐time vicariant lineages endemic biotas insular biotas |
Issue Date | 2019 |
Publisher | Wiley-Blackwell Publishing Ltd. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2699 |
Citation | Journal of Biogeography, 2019, v. 46 n. 12, p. 2735-2751 How to Cite? |
Abstract | Using the land‐bound vertebrates on the marine islands as model organisms, two metrics are presented that permit quantitative and succinct synopses of the ‘evolutionary maturity’ of the hosted faunal assemblages. In turn, these reflect the geo‐physical settings and geological developments of the substrates. The assemblage lineage‐taxonomy spectrum (ALTS) is based on the constituent lineages’ taxonomic distinctiveness and diversity. Individual lineages within assemblages can in most cases be assigned to one of six categories, LT1‒LT6: LT1 is a non‐endemic taxon, whereas LT6 comprises multiple endemic genera from a family that arose elsewhere. If required, the scheme can be expanded: LT9 is an endemic order. The data can then be combined to provide an assemblage spectrum, for example, 00:08:38:30:08:15[13]. Here, the first six values denote the number of lineages assigned to each category expressed as percentages of the overall total, with the sum of the processed lineages listed as the seventh (in brackets and bold). The ALTS metric highlights efficiently the key features of a marine island's biological assemblage. Notably, the contrast between spectra for suites on geologically and geo‐physically varied island types can be striking, for instance the squamate suite on the young, proximate orogenic margin island of Taiwan is coded 78:16:05:00:00:00[37] whereas the one on the distantly located, Late Eocene composite terrane island of New Caledonia is 00:11:00:11:33:44[9]. To overcome the subjectivity that is inherent in assigning supraspecific ranks, an alternative assemblage lineage‐age spectrum (ALAS) is also introduced that makes use of the binary logarithm values of the colonization times of the island lineages (0–2, 2–4, … , 32–64, >64 Ma). It is represented using a seven‐plus‐two‐number code, for instance Madagascar's squamates are 00:06:00:00:19:62:12[19(16)]; most colonizations took place in the Palaeogene (66–23 Ma); there are 19 lineages, but only 16 are presently age‐dated. In addition to marine‐island biogeography studies, the ALTS–ALAS spectrum approach is potentially useful for encapsulating biotas in other sorts of insular setting (e.g. lakes, mountain tops), and for evaluating palaeogeographical models. Furthermore, it may help emphasize the conservation value of an island's faunal assemblage. |
Persistent Identifier | http://hdl.handle.net/10722/279981 |
ISSN | 2023 Impact Factor: 3.4 2023 SCImago Journal Rankings: 1.460 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ali, JR | - |
dc.contributor.author | Vences, M | - |
dc.date.accessioned | 2019-12-23T08:24:33Z | - |
dc.date.available | 2019-12-23T08:24:33Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Journal of Biogeography, 2019, v. 46 n. 12, p. 2735-2751 | - |
dc.identifier.issn | 0305-0270 | - |
dc.identifier.uri | http://hdl.handle.net/10722/279981 | - |
dc.description.abstract | Using the land‐bound vertebrates on the marine islands as model organisms, two metrics are presented that permit quantitative and succinct synopses of the ‘evolutionary maturity’ of the hosted faunal assemblages. In turn, these reflect the geo‐physical settings and geological developments of the substrates. The assemblage lineage‐taxonomy spectrum (ALTS) is based on the constituent lineages’ taxonomic distinctiveness and diversity. Individual lineages within assemblages can in most cases be assigned to one of six categories, LT1‒LT6: LT1 is a non‐endemic taxon, whereas LT6 comprises multiple endemic genera from a family that arose elsewhere. If required, the scheme can be expanded: LT9 is an endemic order. The data can then be combined to provide an assemblage spectrum, for example, 00:08:38:30:08:15[13]. Here, the first six values denote the number of lineages assigned to each category expressed as percentages of the overall total, with the sum of the processed lineages listed as the seventh (in brackets and bold). The ALTS metric highlights efficiently the key features of a marine island's biological assemblage. Notably, the contrast between spectra for suites on geologically and geo‐physically varied island types can be striking, for instance the squamate suite on the young, proximate orogenic margin island of Taiwan is coded 78:16:05:00:00:00[37] whereas the one on the distantly located, Late Eocene composite terrane island of New Caledonia is 00:11:00:11:33:44[9]. To overcome the subjectivity that is inherent in assigning supraspecific ranks, an alternative assemblage lineage‐age spectrum (ALAS) is also introduced that makes use of the binary logarithm values of the colonization times of the island lineages (0–2, 2–4, … , 32–64, >64 Ma). It is represented using a seven‐plus‐two‐number code, for instance Madagascar's squamates are 00:06:00:00:19:62:12[19(16)]; most colonizations took place in the Palaeogene (66–23 Ma); there are 19 lineages, but only 16 are presently age‐dated. In addition to marine‐island biogeography studies, the ALTS–ALAS spectrum approach is potentially useful for encapsulating biotas in other sorts of insular setting (e.g. lakes, mountain tops), and for evaluating palaeogeographical models. Furthermore, it may help emphasize the conservation value of an island's faunal assemblage. | - |
dc.language | eng | - |
dc.publisher | Wiley-Blackwell Publishing Ltd. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2699 | - |
dc.relation.ispartof | Journal of Biogeography | - |
dc.rights | Preprint This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Postprint This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | assemblage classification | - |
dc.subject | conservation tool | - |
dc.subject | deep‐time vicariant lineages | - |
dc.subject | endemic biotas | - |
dc.subject | insular biotas | - |
dc.title | Novel summary metrics for insular biotic assemblages based on taxonomy and phylogeny: Biogeographical, palaeogeographical and possible conservational applications | - |
dc.type | Article | - |
dc.identifier.email | Ali, JR: jrali@hku.hk | - |
dc.identifier.authority | Ali, JR=rp00659 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1111/jbi.13706 | - |
dc.identifier.scopus | eid_2-s2.0-85074592305 | - |
dc.identifier.hkuros | 308859 | - |
dc.identifier.volume | 46 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | 2735 | - |
dc.identifier.epage | 2751 | - |
dc.identifier.isi | WOS:000491954100001 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0305-0270 | - |