Robert Hill

Reinstatement and recircumscription ofJupunbaandPunjuba(Fabaceae) based on phylogenetic evidence

Publisher: Oxford University Press (OUP)

Date: 03-2021

DOI: 10.1093/BOTLINNEAN/BOAB007

Abstract: Among the mimosoid legumes (Fabaceae, Caesalpinioideae, mimosoid clade), many genera have complex nomenclatural histories, including Abarema that stands out due to numerous nomenclatural changes. Abarema is a Neotropical genus that currently comprises c. 50 species, with centres of ersity in the Amazon and Atlantic rain forests. Recent phylogenetic studies of Abarema have demonstrated the non-monophyly of the genus, which was shown to be polyphyletic with species traditionally recognized under the genus placed in three main clades that are intermingled with other genera of the former tribe Ingeae. The type species of Abarema groups with Inga, Macrosamanea, Enterolobiump.p., Zygia and Blanchetiodendron, whereas the other two clades correspond to the former genera Jupunba and Punjuba. The aim of this study is to build a phylogenetic tree of Abarema s.l. supporting the reinstatement of Jupunba and Punjuba, based on morphological and phylogenetic evidence, and to carry out a nomenclatural overhaul of the species and implement necessary typifications. For Punjuba we reinstate three species and add three new combinations. Jupunba comprises 37 species, of which eight are reinstated in addition, the resurrection of one species with a new synonym is proposed and 29 new combinations are made. In total, 63 taxa are revised, including accepted names, synonyms and excluded names. A taxonomic key is presented for the identification of Punjuba, Jupunba and related genera. We present 40 new combinations, one new taxonomic status and 18 corrections of nomenclature category for lectotypes and two neotypes. One lectotype is designated, one species is reinstated with a new synonym and a second step neotypification is made. We located 97 unreported types during the revision, which are cited here for the first time.

Past climates and plant migration - the significance of the fossil record

Publisher: Wiley

Date: 15-04-2023

DOI: 10.1111/NPH.18867

Abstract: This article is a Commentary on Denk et al . (2023), 238 : 2668–2684 .

Comment on Eocene Fagaceae from Patagonia and Gondwanan legacy in Asian rainforests.

Publisher: American Association for the Advancement of Science (AAAS)

Date: 15-11-2019

DOI: 10.1126/SCIENCE.AAZ2189

Abstract: Wilf

Fossil evidence for the evolution of the Casuarinaceae in response to low soil nutrients and a drying climate in Cenozoic Australia

Publisher: CSIRO Publishing

Date: 2020

DOI: 10.1071/BT19126

Abstract: The Southern Hemisphere family Casuarinaceae has a long fossil record, both macrofossils and pollen, none of which provides any evidence about the morphology of the precursor to the family. However, it has long been considered, from both molecular phylogenies and morphological data, that the extant genus Gymnostoma retains key ancestral states and the highly reduced leaf area is a result of a scleromorphic response to low soil nutrients. Gymnostoma has by far the earliest, most extensive and best preserved macrofossil record, beginning in the Late Paleocene. Modification of the stomatal location from superficial in Gymnostoma to encrypted in furrows in the other genera assisted in water conservation as species evolved. We conclude that the morphology of the living and fossil vegetative branchlets provides evidence that low soil nutrients (especially phosphorus) and high water availability in a relatively light limited environment were the original drivers for evolution in the Casuarinaceae. Reducing water availability (xeromorphy) in progressively higher light environments were the major drivers of post-Eocene evolution in this unique plant family.

Formal recognition of extinct Antarctic polar forests as a distinct biome

Publisher: Cambridge University Press (CUP)

Date: 21-06-2022

DOI: 10.1017/S0954102022000190

Abstract: We conclude that the extinct polar forests of Antarctica deserve recognition as a distinct biome - the ‘Austral Polar Forest Biome’ - rather than being regarded as analogous to modern rainforest.

University Of Adelaide

Location: Australia

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Special Research Initiatives - Grant ID: SR0354582

Start Date: 2003

End Date: 12-2003

Amount: $20,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0557828

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End Date: 12-2009

Amount: $180,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP110104926

Start Date: 03-2011

End Date: 03-2015

Amount: $330,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0878342

Start Date: 2008

End Date: 12-2011

Amount: $233,882.00

Funder: Australian Research Council

Research Networks - Grant ID: RN0459908

Start Date: 12-2004

End Date: 09-2010

Amount: $2,500,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP140100307

Start Date: 03-2014

End Date: 07-2018

Amount: $347,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0559266

Start Date: 10-2005

End Date: 12-2009

Amount: $580,000.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE170100177

Start Date: 2017

End Date: 12-2018

Amount: $290,000.00

Funder: Australian Research Council

Research Networks - Grant ID: RN0457921

Start Date: 10-2004

End Date: 10-2009

Amount: $1,500,000.00

Funder: Australian Research Council

Special Research Initiatives - Grant ID: SR0354791

Start Date: 2004

End Date: 12-2004

Amount: $40,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP160101249

Start Date: 05-2018

End Date: 12-2024

Amount: $669,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP0343404

Start Date: 2003

End Date: 12-2005

Amount: $125,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP130104314

Start Date: 2013

End Date: 12-2016

Amount: $230,000.00

Funder: Australian Research Council