|
TASMANIAN FIELD NATURALISTS CLUB INC.
established 1904.
BULLETIN
http://www.tased.edu.au/tasonline/tasfield/
Editor : Don Hird. (hirdd@primus.com.au
)
Bulletin No. 303 (quarterly) July 2001
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 write
to GPO Box 68, Hobart, 7001.
Programme
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.
Thurs. 2 August. 7.45p.m.: Karen Edyvane, Dept. Primary Industry,
Water & Environment (DPIWE), will speak Giant Kelp, its ecology and
conservation status.
Sat. 4 Aug. Excurs. Meet at The Museum at 8.30 a.m. to travel to Kettering
to take the 9.30 a.m. Ferry to Bruny Island where we will take the walk
to Cape Queen Elizabeth (formerly Cape Trobriand), at the north end of
Adventure Bay. This walk affords fine views and traverses a range
of interesting coastal habitats. Although we will overlook nearby
kelp fields, close inspection will be optional !
Thurs. 6 September Paul Hedge, a Project Officer with DPIWE,.will speak
on yet another pestilential introduced species; Rice Grass.
Sun. 9 Sept. Excurs. 9.00 a.m.: Little Swanport is both a location
to view the effects of Rice Grass on estuarine environments and a fine
spring venue in itself.
Thurs. 4 October 7.45p.m.: Les Rubenach, a member of this club and expert
photographer, will speak on Orchids.
Sat. 6 Oct. Excurs. 9.00 a.m.: Several locations within easy reach
of Hobart will be visited as orchids are often site-specific. Most
likely we will start at Waverly Flora Park and finish in the Pelverata
area with another orchid site in between.
Thurs. 1 November 7.45p.m.: Pat Quilty will speak on aspects of Antarctic
biology with special reference to geology and fossils.
Friday to Sunday, 2-4 November SGAP Flower Show
This year’s theme is Gondwana. We aim to provide a small exhibition
of our activities and specimens. In lieu of an excursion we will
attend to our exhibit.
Jewel Beetles of Tasmania, our latest publication, is available for
$10 until the end of August.
FEDERATION WEEKEND 21-23 SEPTEMBER
This meeting will be hosted by the Central North Field Nats and held
at the Arm River Camp facilities in NW Tasmania.As usual a full and interesting
range of activies as well as social interaction with other Tasmanian Naturalists
will be on offer.
SEPTEMBER – Biodiversity Month
A detailed kit of activities and information on Biodiversity will be
available at the next two meetings.
Our Conservation Policy is under continuing development. An early
draft is on our website. See a committee member is you wish to be
involved.
Excursion Reports
FIELD TRIP TO YARLINGTON TIER RAINFOREST
SITE
Report by Robin Cribbes
On Sunday 4th February, five of us met at the agreed meeting place
for the excursion to see the remnant rain forest at Yarlington Tier. The
bulletin promised us a "short scrubby walk", a wonderful piece of hyperbole.
The ground was littered with huge fallen trees and boulders of various
sizes and I can truly say I fell over every one of them. The rest of the
party leapt over them like mountain goats.
We crossed a large sphagnum bog surrounding the remnant rain forest
which was absolutely fascinating as each footfall sank at least 20cm into
the moss and you could see all the footsteps ahead very clearly. This stopped
me getting lost while I was following the coo-ees from the advance party.
When we got there I was surprised at how small the remnant was. There
were only a few species of trees, the names of which I can’t remember (and
guess what, my field guides were in the car. Where else?). It was surprisingly
quiet with very few bird sounds.
We moved off from there for Kevin to search for his snails, Spider
Bob his millipedes and Don his dung beetles, his particular interest being
the different species of beetles to be found in the different marsupial
scats. He found some wombat scats which when broken open showed evidence
of beetles and there were plenty of possum scats with beetles. Spider Bob
found the particular millipedes he was looking for, he sends them to a
colleague in Chicago for DNA testing as part of a program he is conducting.
He explained that Tasmania is fascinating to naturalists as there is little
movement of species between the east and west of the island. Kevin found
a bit of everything, even some millipedes for Bob, and showed me a beautiful
velvet worm, which was irresistible to touch.
For the return journey I was thankful that we avoided the sphagnum
bog but I fell over anyway and we got back to our cars tired but happy.
T.F.N.C. Outing to Collins Cap on 3rd March 2001.
Saturday, 3.3.01 was a perfect day for climbing Collins Cap, a clear
mild day with no wind. Twelve of us in three cars left the museum at 9am
and started the walk at the end of Suhr’s Rd. near the settlement of Collins
Cap. This is an alternative route to the more usual way up Myrtle Forest.
Perhaps Field Naturalists aren’t meant to be observing domestic pigs
but the piggery at the start provided much amusement, especially the piglets!
A Wellington Park sign greeted us at the edge of the sclerophyll forest
which looked like excellent habitat for fungi and snails but, like everywhere
else, the forest was suffering the effects of "not enough rain". We did
find a fungus by the name of Fistulina hepatica or commonly, the
"beef steak" fungus. This is a polypore that grows on wood and is edible.
Its common name refers to the pinkish colouring top and bottom and the
wrinkled upper surface which makes it look a bit like a hunk of meat (depends
on how hungry you are as to how much it resembles a steak!!!).
This is also a Fungimap species and we were pleased to get a photo
of a collection in such good condition. The only other fungal collection
was a puffball - a species of the genus Scleroderma. We climbed
up the fire trail, listening to bird calls and trying to keep Hugh out
of the way of the jack jumpers which were especially abundant. The vegetation
is very similar to that on Radfords track, with lots of Richea pandanifolia,
Cyathodes species, Tasmannia lanceolata (mountain pepper) and
Telopea
truncata (Waratah). This is not surprising, seeing as we were at approximately
the same altitude. Lunchtime saw us at the summit and then we started naturalising
in earnest. The swarm of flying insects was hard to identify until two
met their fate in my cup of tea and were fished out and given to Kevin
to take to Peter McQuillan.
Amanda found a very pretty jumping spider which actually remained
still enough for her to photograph, unlike the butterflies which flitted
off just as Robyn got "The Book" out. Kevin was challenged to find a snail
at the top and shortly produced a microscopic mollusc with much glee. On
the return, David, Kevin and I took the Myrtle Forest Track, hoping to
encounter wetter conditions. Alas, the wet gully is a very dried up gully,
many Dicksonia antartica ferns were dead and Bedfordia salicina
and
Olearia
argophylla shrubs were limp and desiccated. We did find four more fungi
species but three of these are always in the same place so it wasn’t a
very fruitful excursion for fungi or snails.
Fungi list
| Fistulina hepatica |
Scleroderma sp. |
Paxillus muelleri |
| Scutellinia sp. |
Phellinus wahlbergii |
Xylaria polymorpha |
T.F.N.C Excursion for June 2001
"Knapping," as defined in Webster’s dictionary, is to break or shape
stones or flints by a quick, sharp blow. At this excursion, 13 Field Naturalists
spent a very pleasant, interesting and informative 2 hours in the warm
morning sun in the Bond Courtyard at the Tasmanian Museum. We were watching
Kim Ackerman demonstrate the ancient craft of knapping. Chips of obsidian
(volcanic glass), chert and glass flew around as he deftly manipulated
another lump of rock, in this case dolerite, or a deer’s antler to create
an axe or knife capable of slicing through an animal hide with the ease
of a sharp knife passing through soft butter, which he demonstrated on
the spot!!
Using techniques called "direct" and "indirect" percussion and a more
refined "pressure flaking" technique he created beautiful arrowheads, knives
and axes with elaborate "bevelled" edges. Heat treating the rock will affect
the internal structure and make the rock harder. The Aborigines were aware
of this effect and had sophisticated methods of heating and cooling carried
out in "kangaroo ovens". Kim said that from the ripples on a tool he could
tell whether the knapper was left or right handed, whether he was sitting
cross-legged, with one leg out in front or squatting. It is this glimpse
of man in the past that fascinates Kim and indeed all of us who were present,
although I think that Luis and Marc were more impressed with the sharpness
of these stone implements and their potential as deadly weapons.
Mt Field Outing 6 May 01, report by Kevin Bonham
After her talk on sphagnum bogs, Jennie Whinnam was kind enough to
lead us on a trip to see them in the field, Mt Field to be precise. About
twelve Field Nats turned up and we walked around Lake Dobson and a short
distance down the Lake Seal track. We saw a few small sphagnum patches
around Lake Dobson, and Jennie was also soon instructing us on how to tell
different Richea species apart and which ones only grow with sphagnum.
The patches of sphagnum on the Lake Seal track - mostly growing in areas
where underground boulders had impeded water drainage and produced conditions
more suited to sphagnum than trees. We were able to see some of Jennie's
old study sites where fenced-off sections demonstrated the effect of mammal
grazing in promoting sphagnum over grasses. We had lunch at one of the
larger sphagnum patches and then returned to the Lake Dobson carpark, where
we were surprised to encounter ten Launceston Field Naturalists receiving
a talk on alpine insects from Peter McQuillan! Among other natural history
items, fungi were plentiful and diverse around the lake. Snails were not,
but I did find Roblinella sp. "Tahune", a fairly common western
Tasmanian snail which has never been recorded from Mt Field before. I also
observed an example of change in the natural environment - on several visits
in the 1980s I had seen galaxid fish in a deep creek which drains into
Lake Dobson. On this visit the creek had silted up and the fish were nowhere
to be seen.
Report on the Jewel Beetles Booklaunch
On Friday 20th July we at last officially launched the club’s 3rd book
in as many decades, this time Jewel Beetles of Tasmania. Around 60
members and friends gathered in the zoology gallery of the Tasmanian Museum
& Art Gallery, at least some striving to imitate the iridescence of
the beetles in their attire.
Genevieve Gates, as colourful club president, introduced the speakers.
Don Hird recounted the inception of the book some five years earlier, as
a result of he and David Cowie, the author, meeting in the curatorial area
of the Museum. Peter McQuillan, a former club president and leading
Tasmanian entomologist spoke of the diversity of beetles in general and
the wealth of information yet to be recorded. David Cowie signed
books with flourish, clearly proud of our joint achievement.
New Books in the Library
Jones, D., Wapstra, H., Tonelli, P. and Harris, S. The Orchids
of Tasmania, Melbourne University Press, Vic., 1999. 408pp
HB
A detailed guide to every known orchid in Tasmania. Introductory chapters
on habitats, conservation and notes on orchids are followed by a key to
the genera, and a key to orchid leaves. The book is clearly set out with
a page devoted to each species, including its description, photograph and
locality map. These are preceded by notes on the genus, often with explanatory
drawings and for the larger genera, a key a key to the species.
Includes glossary, references, and index to the species and a checklist
of the species, as well as an appendix on orchid taxa erroneously recorded
for Tasmania.
Lane, P., Morris, D. and Shannon, G. Common Grasses of Tasmania:
An Agriculturalists’ Guide. Tasmanian Environment Centre, Hobart,
1999. 83pp pbk.
This book provides clear descriptions of the more common grasses in
Tasmania, concentrating on those of agricultural significance. The
descriptions are divided into three groupings, native/pasture, introduced/pasture
and introduced/weed grasses. A double page spread is devoted to each species
with a description and photograph of the plant as well as diagrams of identifying
features. Although the book only covers a small proportion
of the total number of species in the state, notes on similar species are
included at the foot of each description. The book includes a glossary.
Given that grasses form such an important component of our landscape, this
is a useful guide.
Kantvilas, G. and Jarman, S.J. Lichens of Rainforest in
Tasmania and south-eastern Australia. (Flora of Australian Supplementary
Series Number 9.) Australian Biological Resources Study, Canberra,
1999. 212pp pbk.
The cool temperate rainforests in Tasmania provide habitat for a remarkable
diversity of lichen flora. This book is both a guide to the lichens, beautifully
illustrated by Bruce Fuhrer’s clear photographs, and an introduction to
their distribution, relationships, biology and the composition of the lichen
flora and communities. Includes notes on identifying lichens,
a key, glossary references and index.
Jarman, S. J. and Fuhrer, B. A. Mosses and liverworts of rainforest
in Tasmania and south-eastern Australia. CSIRO and Forestry Tasmania,
1995. 134pp pbk.
This book is an introduction to the Bryophytes (mosses and liverworts)
in cool temperate forests and other wet vegetation types.
It is not an identification guide, and therefore does not contain scientific
descriptions and keys, but is aimed at the non-specialist to increase awareness
of a beautiful but largely neglected flora. Bruce Fuhrer’s beautiful
photographs should inspire us to take a closer look. Contains an index
and glossary.
Kirkpatrick, J.B. and Harris, S. The Disappearing Heath
Revisited. Tasmanian Environment Centre Inc. Hobart, 1999.
210pp pbk.
Chapters in this interesting book cover history, (including pre-human
evolution of heath), ecology, different heath communities, the flora, significant
species and conservation. Illustrated with line drawings by Georgina
Davis and a few coloured photographs. A third of the book is taken
up with appendices devoted to distribution maps and percentage frequency
of species in particular communities.
Leaman, David. Walk into History in Southern Tasmania. Leaman
Geophysics, Hobart, 1999. 282pp pbk.
This is not a conventional walking guide or a geology field guide,
but an interesting mix, describing 64 reasonably accessible day walks in
the southern region. Most of these walks are centered about Hobart and
Mt Wellington, extending as far as Orford, Huon and Channel and Tasman
Penisnsula. They are not just walks but insights into the places
in terms of their natural history, dependent on the underlying geology,
as well as the more recent human history. The author also reviews several
controversial planning issues and major developments where geology has
been given inadequate attention, in the hope that such mistakes can be
avoided in the future. Members who attended David’s talk and
outing last year will remember the Long Beach dune saga at Sandy Bay, and
the issues vexing the cliffs at Taroona.
The book is written in Leaman’s easy and energetic style. The
general information given in the front provides an understanding of the
geology dealt with as a backdrop for everything else in the book.
The book is well illustrated with coloured photographs, sketch maps and
diagrams and also includes a glossary and index.
Perhaps the book will provide some interesting ideas for club outings…
______________________________________
|