Thanks Phil for this interesting reference, I was not aware of it
beforehand.
Also thanks to others for pointing out that the distribution of the Spotted
Scrubwren probably extends as far east as the Coorong in South Australia.
Much appreciated.
Kind regards,
Stephen
Stephen Ambrose
Ryde NSW
-----Original Message-----
From: Birding-Aus On Behalf Of
Phil Gregory
Sent: Thursday, April 26, 2018 12:47 AM
To: John Tongue
Cc:
Subject: Two new additions pending
Hi Stephen & John,
Here is the scrubwren split:
Norman J.A., Christidis L. & Schodde R., in press. Ecological and
evolutionary diversification in the Australo-Papuan scrubwrens (Sericornis)
and mouse-warblers (Crateroscelis), with a revision of the subfamily
Sericornithinae (Aves: Passeriformes: Acanthizidae). Org. Divers. Evol.
Abstract
Understanding how the complex geotectonic and climatic history of the
Australo-Papuan region has promoted the ecological and evolutionary
diversification of its avifauna remains a challenge. Outstanding questions
relate to the nature and timing of biogeographical connections between
Australia and the emerging island of New Guinea and the mechanisms by which
distinctive altitudinal replacement sequences have evolved amongst
congeneric species in montane New Guinea. Here, we combine analyses of
phylogenetic and eco-morphological data to investigate ecological and
evolutionary patterns of diversification in the largely mesic-adapted
Australo-Papuan scrubwrens (Sericornis) and mouse-warblers (Crateroscelis).
We find evidence of ecological convergence and present a revised taxonomic
and systematic treatment of the subfamily integrating information from new
(ND2) and existing molecular phylogenetic reconstructions. Biogeographical
connections indicate at least three phases of fauna
l interchange between Australia and New Guinea commencing in the mid to
late Miocene. We also find little support for the proposed time dependency
of ecological sorting mechanisms linked to divergence in foraging niche
amongst altitudinal replacements. Instead, physiological adaptations to
hypoxia and increased thermal efficiency at higher altitudes may better
account for observed patterns of diversification in montane New Guinea.
Indirect support for this hypothesis is derived from molecular clock
calibrations that indicate a pulse of diversification across the
Miocene-Pliocene boundary coincident with a phase of rapid mountain uplift.
Simple ecological and climatic models appear inadequate for explaining
observed patterns and mechanisms of diversification in the New Guinean
montane avifauna. Further insights will require multidisciplinary research
integrating geotectonic, palaeoclimatic, genetic, ecological and
physiological approaches.
Regards from Kaziranga
Phil Gregory
<>
ornithological writer/tour leader/tour facilitator
Field Guides / Sicklebill Safaris / Cassowary House / Cassowary Tours
PO Box 387
Kuranda
QLD 4881
Australia
Ph: +61 7 40 937 318
Email: <>
Website1: http://www.sicklebillsafaris.com
<http://www.sicklebillsafaris.com/> OR www.birder.travel
<http://www.birder.travel/>
Website 2: http://www.cassowary-house.com.au
<http://www.cassowary-house.com.au/>
Website 3: http://www.cassowarytours.com.au
<http://www.cassowarytours.com.au/>
> On 23 Apr 2018, at 10:27 AM, John Tongue <> wrote:
>
> Dopey Autocorrect - Scrubwren, not Scrubwomen!!
>
>> On 22 Apr 2018, at 2:38 PM, Phil Gregory <> wrote:
>>
>> Since I got to Kolkata from Ghana, two new potential additions derived
from splits:
>> White-bellied Whipbird (Psophodes leucogaster) of South Australia from
Western Whipbird, the old Mallee Whipbird of Schodde & Mason
>> Spotted Scrubwren (Sericronis maculatus) of primarily Western Australia
from White-browed Scrubwren, long expected.
>> Even more reason for a trip to South Australia now, I am slipping behind
with my needed species again.
>> Phil Gregory
>> <>
>> ornithological writer/tour leader/tour facilitator
>> Field Guides / Sicklebill Safaris / Cassowary House / Cassowary Tours
>> PO Box 387
>> Kuranda
>> QLD 4881
>> Australia
>>
>> Ph: +61 7 40 937 318
>>
>> Email: <>
>> Website1: http://www.sicklebillsafaris.com
<http://www.sicklebillsafaris.com/> OR www.birder.travel
<http://www.birder.travel/>
>> Website 2: http://www.cassowary-house.com.au
<http://www.cassowary-house.com.au/>
>> Website 3: http://www.cassowarytours.com.au
<http://www.cassowarytours.com.au/>
>>
>>
>>
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