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TASMANIAN FIELD NATURALISTS CLUB INC.
established 1904.
BULLETIN
http://www.tased.edu.au/tasonline/tasfield/
Editor : Don Hird.
Bulletin No. 299 (quarterly) July 2000
The Tasmanian Field Naturalists Club encourages the study of natural
history and supports conservation. We issue our journal The Tasmanian
Naturalist annually in October. People with a range of ages, background
and knowledge are welcome as members.
Contact Genevieve Gates (6227 8638) for further information or GPO
Box 68, Hobart, 7001.
Program.
General Meetings start at 7.45 p.m. on the first Thursday of the month,
in the Life Science Building at the University of Tasmania. Outings
are usually held the following weekend, meeting outside the to the Tasmanian
Museum and Art Gallery entrance in Macquarie Street. Bring lunch
and all-weather outdoor gear.
If you are planning to attend an outing but have not been to the prior
meeting, phone to check as to the timing of the excursion (with Genevieve
Gates; 62 278 638 or Don Hird; 62 344 293). Unforeseen changes sometimes
occur.
Program
Thurs. 3 August. 7.45p.m.: Zoe Tanner, an Honours student in
zoology at Utas, will speak about that feral species; the Lyrebird in Tasmania
! Not only has the Lyrebird retained many populations on mainland
Australia, where its extinction from foxes was feared, it has expanded
its introduced Tasmanian range.
Sun 6 Aug. Excurs. 9.00 a.m.: We will visit Lyrebird habitat
near Hastings or Adamson’s Peak, the vicinity of Zoe’s study area.
Moderate walking is involved, although there is also the picnic area and
National Park facilities for the less able.
Thurs. 7 September Peter McQuillan will speak on Insects of Tasmanian
Mountains. Mountains often act as biological islands, particularly
for those species that specialise in such habitats, and Tasmania offers
interesting examples of this.
Sat. 9 Sept. Excurs. 9.00 a.m.: We will be joined by Phil Collier
(see note on page 2). There will be a commemorative walk for Sue
Collier, as well as exploring the theme of Insects of Tasmanian Mountains.
We are planning a BBQ lunch at The Springs, so come prepared.
Thurs. 5 October 7.45p.m.: As this Bulletin goes to press, late
changes have meant that the details of this meeting and outing will be
announced by the September meeting. Alternatively, enquire with a
club contact closer to the date.
Oct. Excurs. Saturday or Sunday, venue & time
TBA.
Thurs. 2 November 7.45p.m.: Stuart Frusher from the Tasmanian
Fisheries and Aquaculture Institute (TAFI) will speak on Rock Lobsters.
November Excurs. Koonya Weekend; 3-5 November. We have booked
the University’s Koonya facility which offers basic but adequate accommodation.
There are many natural attractions on the Tasman peninsula in the vicinity
of Koonya. Further details in the October Bulletin.
Tributes to the late Sue Collier
Many members will already be aware that Sue recently died in Canberra
after a troubling time with illness. Sue, and Phil, to whom our sincere
condolences have been conveyed, were active and enthusiastic members of
Tas. Field Nats. over many years.
Members and other friends of Sue are invited to contribute brief written
tributes. These will appear in the next Bulletin.
EXCURSION REPORTS
Excursion To Tasmanian Aquaculture & Fisheries Labs. Sat. 6
May 2000
Report by Don Hird
Ten members were shown around the TAFI complex by Caleb Gardner.
Crayfish, Jasus edwardsii, behavior was observed in outside tanks
fed with seawater from the adjacent Derwent Estuary. Crayfish have
hierarchical behavior; usually the largest and strongest individuals occupy
the prime deep crevices available. We were shown the collecting traps
used to sample Puerulus larvae at the settlement stage following their
18-24 months of larval life in widely-circulating ocean currents. The extent
of such settlement and the species concerned are monitored and used to
predict likely population numbers in future years. At the puerulus
stage the young rock lobsters begin to closely resemble the adult form.
Recently there has been a very significant settlement of a NSW commercial
species, Jasus verreauxi, probably as a result of warmer ocean currents
reaching Tasmania.
Another feature of the complex was the Stripey Trumpeter program. Large
adults of 10-15 Kg fed voraciously; mind your fingers ! This program
is aimed at domesticating this local species so that it can be farmed in
the way that salmonids already are. Raising the larval stages has
proved to be something of a stumbling block so far.
Tasmanian Giant Crabs were observed out of their normal deepwater environment,
and a bonus to a very informative excursion was a taste of this premium
product to those who so chose.
Fern Excursion To Snug Falls – 3 June 2000
Report by Robin Cribbes
Ten members collected at the car park. We set off on a perfect,
still sunny day, led by Michael Garrett, fern expert. David and Genevieve
were combining the fern day with fungi collecting, carting a load of necessary
equipment and found many species.
It was evident that there had been recent rains by the cond8ition of
the track, which was badly eroded in places. Not much in the way
of ferns was found until we nearer the falls. We saw a man fern Dicksonia
antarctica, a rough tree fern, Cyathea australis and necklace
ferns, Asplenium flabellifolium. Don pointed out a ringtail
possum nest, an untidy heap of leaves tucked into a tree fork. Robin
found a bird’s nest, bery delicate, made of spider webs and moss, supported
precariously between a couple of twigs a couple of metres above the ground.
We speculated that it belonged to a silvereye or a scarlet robin.
When we got to the falls, Michael identified plenty of ferns for us
high up and alongside the waterfall; Blechnum nudum, B. volcanicum,
B. wattsii, B. ,minus and B. chambersii; coral fern Gleichenia
microphylla, filmy fern Hymenophyllum cupressiforme, fork fern
Sticherus
tener, also many baby man ferns less recognisable at that growth stage.
Anna found a dead wallaby in the rock pool at the base of the falls so
we weren’t tempted to drink from there.
Kevin found plenty of snails. Caryodes dufresnii, Prolesophanta
nelsoniensis, Stenacapha hamiltoni, Pernagera kingstonensis, Allocharopa
legrandi, Elsothera ricei, Roblinella gadensis, were all common.
He also found a fine specimen of a symphylan, a pale centipede-like creature
2cm long which Kevin said is quite big for that group. He also showed
us a velvet worm, a lovely soft black and a delight to watch.
John identified most of the birds for us. Superb fairy wren, dusky
robin, eastern spinebill, yellow throated honeyeater, grey fantail and
beautiful firetail. Julia heard currawongs and a green rosella.
Whilst we ate lunch a crescent honeyeater joined us, settling in small
shrubs and clearly observable.
Springs Excursion, Mt Wellington on 8 July 2000
David Ratkowsky:
The July outing was scheduled to be held in the Lake Dobson area with
Dr. Gintaras Kantvilas as leader, but illness prevented his participation.
Although the morning of Sunday, 9 July was wet and rainy, seven members
and friends met at the Museum, where it was decided that we could see plenty
of lichens on "The Mountain". Thus, we drove to the Upper Springs
Carpark, intending to walk to Sphinx Rock, down to the Shoobridge Track,
and over to Junction Cabin before returning via the Lenah Valley Track.
The presence of many lichens, and our attempts to match them with Bruce
Fuhrer's photos in "Lichens of rainforest in Tasmania and south-eastern
Tasmania" by Kantvilas and Jarman, meant that 15 minutes later we were
still in the Carpark. About two hours later, we had only got to Sphinx
Rock! However, during that time we had observed and identified several
species of lichen, thanks largely to Anna, who put her newly purchased
copy of the rainforest lichen book to good use.
At Sphinx Rock, we felt cold and hungry, so we made our way to Rock
Cabin where Don and the others got a warming fire going and enjoyed our
lunch, supplemented by a 250g bar of Roast Almond chocolate provided by
Genevieve. A heavy rain-shower fell while we sheltered there.
The rainy weather meant that the bush took on a myriad of subtle colours,
with great variation in the various shades of green. The lichens
showed themselves to be a handsome group of plants, their appearance enhanced
by the subtle lighting effect produced by not having too bright a background
(i.e. absence of sunshine!).
All participants seem to have had a good time; the inclement weather
in no way serving to dampen our spirits. Thanks especially go to
Anna, who kept the focus of attention of the group onto lichens.
Below is a list of species that she compiled of lichens found during the
Outing, all on the Lenah Valley Track between the Springs Upper Carpark
and Rock Cabin.
Lichens found on excursion to The Springs, Mt Wellington on 8 July 2000
Anna McEldowney
Hypogymnia (3 spp.) Cladia (3 spp.) Cladonia
capitellata
C. ochrachlora C. pleurota C. merochlorophaea
Placopsis gelida Psoroma asperellum Bunodophoron sp.
Knightiella splachnirima Stereocaulon ramulosum Peltigera dolichorhiza
Dibaeis sp. Pseudocyphellaria faveolata Pseudocyphellaria (3
spp.)
Fungi found on excursion to The Springs, Mt Wellington on 8 July
2000
Genevieve Gates
Cortinarius ‘fuscous-bump"; Trametes versicolor
Psilocybe sp.; Tricholoma "grey"
Marasmius sp.; Dermocybe austro-veneta
Cortinarius abnormis; Two species of Dermocybe
Laccaria sp.; Clitocybe "grey"
Collybia butyracae; Galerina patagonica
Clavulinopsis amoena; Bertrandia astatogala
Heterotextus peziziformis; Cortinar "lilac"
Hydnium repandum; Inocybe "pale buff with orange centre"
Panellus longinquus; Cortinar "very small, white"
Aleuria rhenana Cortinarius sp. ‘very deep violet with olivaceus
gills"
Cortinarius spp. ‘many species of various sizes, shapes
and colours"
Kelsey Aves has compiled some fascinating biographical notes on the
late Harold Sargison, a long-term club member, with particular reference
to his prodigious efforts in organising Field Nats Easter Camps.
The will appear in a future Bulletin.
Recently we received announcement from Parks and Wildlife of a project
on working towards a comprehensive Nature Conservation Stategy. Submissions
are invited; progressive reports and discussion papers have followed, and
more are promised.
Of the committee members who have followed this development (Kevin
Bonham and Don Hird), we found that the claims of being an innovative program
were somewhat dubious, as we see this principle as being both widely established
and regularly neglected so far in Tasmania.
One example of an apparent shortcoming in this area ensued from an
article in the Hobart Mercury on Barred Bandicoots taking cultivated truffles
from farms in northern Tasmania. Apparently the animals were astute
at detecting and eating the gourmet fare ! The farmers were not overly
concerned – adequate fencing should protect their future crop. The
Barred Bandicoot is nonetheless an important species in the Tasmanian conservation
context, being on the verge of extinction on mainland Australia.
When I looked on the official Parks website at the Barred Bandicoot species
data no mention of its inadequate reserved habitat is mentioned.
Underlying this is the problem that there hasn’t been enough systematic
survey work to determine the full range of their natural habitats in Tasmania.
It is nonetheless a very worthwhile process; interested members are
invited to follow the thread of the Stategy, either through the club or
directly.
Don Hird
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