Biodiversity and Biogeography of Amphipod Crustaceans
type: CreativeWork
description: This dissertation presents aspects of the taxonomy, biodiversity, and biogeography of amphipod crustaceans and is an attempt to address the significant knowledge gaps in the absence of global assessments of the diversity and biogeography of amphipods and put a regional-scale study in Indonesia into a global context. This thesis first assessed trends in species descriptions across all, benthic, pelagic, marine, freshwater, and subterranean amphipods. The prediction of the number of amphipod species remaining to be described, the taxonomic effort indicators, the number of single and multiple authorship species, and the authors’ publication lifetime and productivity were analysed. A total of 9,980 species, 1,664 genera, 444 subfamilies, and 221 families were described over the past 250 years. Of these, almost 20% of species have been discovered within the last decade, including 18 fossil records for amphipods. There are more authors describing species and decreasing rate of species being described in relation to the number of active authors in a year, which implies a greater taxonomic effort and that it might be harder to find new amphipod species, respectively. There was no evidence of any change in papers per author per year or publication lifetimes of authors over time that might have biased apparent efforts. A statistical model predicted that about 6,000 species remained to be described by the 21st century. This indicates that about one-third of amphipods remain to be discovered, which is similar to the proportion for other taxa. To study the global biogeography of marine amphipod crustaceans, I determined the regions of endemicity and latitudinal gradients for three measures of diversity (alpha, gamma, and beta diversity). The analysis of the spatial patterns of richness and endemicity, based on over 400,000 distribution records of 4,876 amphipod species, identified 12 regions of endemicity that were similar to the global biogeography of other marine taxa. The lat…
abstract: This dissertation presents aspects of the taxonomy, biodiversity, and biogeography of amphipod crustaceans and is an attempt to address the significant knowledge gaps in the absence of global assessments of the diversity and biogeography of amphipods and put a regional-scale study in Indonesia into a global context. This thesis first assessed trends in species descriptions across all, benthic, pelagic, marine, freshwater, and subterranean amphipods. The prediction of the number of amphipod species remaining to be described, the taxonomic effort indicators, the number of single and multiple authorship species, and the authors’ publication lifetime and productivity were analysed. A total of 9,980 species, 1,664 genera, 444 subfamilies, and 221 families were described over the past 250 years. Of these, almost 20% of species have been discovered within the last decade, including 18 fossil records for amphipods. There are more authors describing species and decreasing rate of species being described in relation to the number of active authors in a year, which implies a greater taxonomic effort and that it might be harder to find new amphipod species, respectively. There was no evidence of any change in papers per author per year or publication lifetimes of authors over time that might have biased apparent efforts. A statistical model predicted that about 6,000 species remained to be described by the 21st century. This indicates that about one-third of amphipods remain to be discovered, which is similar to the proportion for other taxa. To study the global biogeography of marine amphipod crustaceans, I determined the regions of endemicity and latitudinal gradients for three measures of diversity (alpha, gamma, and beta diversity). The analysis of the spatial patterns of richness and endemicity, based on over 400,000 distribution records of 4,876 amphipod species, identified 12 regions of endemicity that were similar to the global biogeography of other marine taxa. The lat…
author: Arfianti, Tri
license: https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
date published: 2020
date modified: 2026-07-24T01:03:18Z
provider: University of Auckland
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: ResearchSpace@Auckland

PropertyValue
property ID: Handle
value: https://hdl.handle.net/2292/53402