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The thin green line

22/3/2024

11 Comments

 
PictureThe Corinella foreshore walk ... a wide, shaded, wind-protected microclimate created by the low trees and shrubs. Photos: Geoff Ellis
By Ed Thexton

I VISITED the Corinella Foreshore recently and it was a revelation.  In the harsh clifftop environment, directly exposed to the prevailing south westerlies, the path west of the boat ramp wound through a wide, shaded, wind-protected microclimate created by the continuity of diverse, indigenous low trees and shrubs. Elevated vantage points provided views to Western Port.  

I couldn’t help but contrast it with the foreshore path in my home town of Inverloch, which looks more like a municipal utility than a natural experience.  

I drove to the northern section of the Corinella path, where the abundant birdlife on the bay spoke of the richness of the near shore marine environment.

Google Earth puts the Corinella foreshore into context.  The aerial view shows the 30ha, 4.5km foreshore reserve to be the only connected vegetation in the vicinity of Corinella.  The proximity to Western Port lends it a special significance.  This coastal vegetation and Corinella itself are part of the internationally recognised UNESCO Western Port World Biosphere Reserve.  ​
Picture
This diminutive slither of vegetation is critical because of its location as the meeting point of the land and the sea, of terrestrial and aquatic ecosystems.  Denoted as an ecotone, the meeting of two ecosystems is typically biologically richer than either alone. 

The Friends of the Corinella Foreshore prompted my visit.  They described how the beauty that I saw was a product of the sustained work of the Corinella Foreshore Committee of Management over the past 30 odd years.  When they say it was the work of the committee, they don’t mean by employees, they mean by volunteers.  All the co-ordination and much of the work, strategically aided by contractors when circumstances and finances allowed.  The beauty of the current day is the product of persistent and consistent work by unpaid locals over decades. 
​​
Why would I find it so astounding?  As a resident of Inverloch, I have experienced first hand, the coastal reserves of South Gippsland now part of the Yallock Bullock Marine and Coastal Park.  In addition, I can identify with the vegetation management of the Corinella Foreshore because I was engaged in similar work for the past 40 years across the state’s urban and rural waterways. 

​Having walked hundreds, if not thousands, of waterway frontages, including many Crown water frontage reserves, I can tell you it’s exceptionally rare to find a water frontage managed by a landowner, at times across generations, that has kept the biological values, as has the Corinella Foreshore Committee.  The contrast between frontages actively managed for biodiversity and those not managed was always obvious.
​
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The views have it
Jan 24, 2024 - Corinella homeowners have won their battle for a sea view with the long awaited landscape plan by DEECA declaring that vegetation may be thinned or cleared in residential areas with "view line potential".
The Corinella Foreshore is public land, part of the Coastal Reserve of Victoria, about 2000kms long in total, which was set aside by our forebears for the public. This is something that is denied to both NSW and Queensland where private land runs to the beach.  The value of coastal reserves is becoming clearer with our changing climate.  It is our buffer. 

The usual story is clearing, disturbance, reduction and localised extinction of indigenous plants and animals, invasion by pest plants, animals, and grazing.  Suppressed, degraded and invaded, the indigenous vegetation is usually a mere shadow of its former self.  Once the cattle are removed, weeds proliferate. 

It has been my little joke that our visionary forebears set aside these strips of land before the rest of the land was cleared. It has only taken us 100-plus years to work out why and join them in realising their true value.  In the meantime, we managed it by unrestricted grazing, just like we did the rest of the catchment. 

What sets the Corinella Foreshore apart is that they kept management local, like a farmer. And they took over at the critical juncture when stock grazing was being phased out.  The results are reflected in today’s vegetation.  The species mix along the Corinella Foreshore walk contrasts markedly with the vegetation of the coastal reserve on the cliffs west of Inverloch, where exotic invasives are strongly represented. 
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Because they live locally, the Corinella committee members have come to understand the individual and collective properties of the indigenous vegetation species in this harsh environment.  They observed first hand, over years and decades, the cycles of species establishment, growth and senescence.  They could evaluate the results of their interventions and adjust.  Because money was short and volunteer time always limited, they opted to do what works best at least expense.  Removing exotic woody weeds, for example, can be expensive but not if the seedlings are removed repeatedly before they have a chance to grow large. 

The net result is that Corinella is way ahead of other coastal towns.  I can only hope the advantage – and all that hard work – isn’t squandered. All vegetation requires ongoing management and informed care.  Fragmentation is the enemy of biodiversity.  With fragmentation my beautiful experience of that walk may become a thing of the past, never to be replicated. 

​Ed Thexton is president of the South Gippsland Conservation Society.
​
11 Comments
Jenny Date
23/3/2024 12:12:38 pm

Ed's assessment of the future facing the Corinella Foreshore Reserve is a very thoughtful and timely one. Thankyou for your intelligent and insightful remarks, Ed.

Reply
Mike link
23/3/2024 05:25:16 pm

Bass Coast Post Ed Thexton

Dear Mr Ed Thexton thanks for your comment on the Thin Green “Strip of Land “of the Corinella foreshore.

I would have enjoyed accompanying you on the walk for the following reasons.
I have been a Corinella landowner and resident for over 20 years and a Scientist with an interested in Ecology.
We have measured the Western precinct change over the years and especially now having very few Indigenous species and low ground cover.
Our Foreshore Biome is not ‘diverse’ but measurably mostly as mono-species dominated by the planted Non EVC plants of Casuarina’s (thousands) Boobialla (hundreds)and Blackwood’s (50) in a density defined as a forest by UN. We have 80% canopy it’s hard not to notice the edge effect of humans planting so close species which have such Allelopathic behaviour. Our Bird life over the 20 years has decreased by 50 species according to our local bird watcher.

All is a Planted Green Line by the then Corinella Foreshore Committee from 2005 to 2015/6 with Govt. The use of grants funding contractors, not only by Volunteers and under strict personal direction of the then committee with no evidence or knowledge of EVC or biodiversity. Your 40 years would understand EVC and its importance and diversity of species for resilience for Climate change.

You mentioned Ecotone and human activity creates edges with problems through development, agriculture as was ours with the Foreshore strip planting, causing fragmentation. Often, the changes are detrimental to both the size of the habitat and to species. We can see this with dominance of the exotics Casuarinas, almost to the extent of Wilson’s Prom. The edge has higher fire risk, more predators of animals, insects and loss of foraging habitat deterioration with extinction of native indigenous cascades.
What would the Ramsar UNESCO world experts do to the Human interventionists past Committee of management and the lack of EVC commitment which in Victoria we must observe as a Hierarchal Vegetation code in this Biome.
Lastly if you had walked on the beach, you would have witnessed the erosion of cliff edge with toppling Casuarina’s every few meters, showing instability, typical water erosion around their surface roots. Around the world its known Casuarina’s do cause cliff erosion in a riparian soil not granite rock as is Wilson Prom. We need low ground cover along the cliff edge as is seen on the island and as in our EVC. Hopefully it will happen, as in the Landscape plan, which people need to understand has evidence behind it and not all about aesthetics.

Mike G.

Reply
Ant
23/3/2024 07:33:20 pm

Great info Mike. Are you able to navigate the new evc mapping system? The previous version was not very user friendly, but I was lucky to have done an extensive evc our my local foreshore area and thankfully I still have it all on file. Do you know of anyone who can provide online training for the new evc mapping system I would appreciate this and would like to update my skills. Evc is very important. Is broken important for this area? Thank you

Reply
Ant
23/3/2024 09:29:08 pm

Can I also add, that as challenging as the EVC mapping tool is to use, it is fun and exciting especially with some of the historical information you can get.

Reply
Ant
23/3/2024 09:32:10 pm

Apologies Mike, the last sentence was meant to read "Is Braken important for this area? It seems to be slowly disappearing.

Reply
Ed Thexton
24/3/2024 09:33:51 am

Mike C.
Thanks I’d love to walk and talk with you along the foreshore anytime. Please contact me at your convenience. I’ll be away for much of the school holidays.
Cheers
Dear

Reply
Barb
24/3/2024 03:40:47 pm

Well said Mike , it’s about time someone has the knowledge and understanding of the corinella foreshore and has the courage to respond appropriately.

Reply
Glenn Quagmire
24/3/2024 09:10:55 pm

Mike G. knows what he’s talking about. Ed Thexton clearly does not. Gìggity.

Reply
Ann
24/3/2024 10:37:09 pm

Mike, you obviously do not have the views Barbara has. But were you one the committee?

Reply
ant
25/3/2024 09:48:27 am

This is the EVC mapping tool. Not very user friendly, but worth playing around with. You can fine tune areas you would like to map for Flora & Fauna
https://maps2.biodiversity.vic.gov.au/Html5viewer/index.html?viewer=NatureKit

Reply
Barb
5/4/2024 07:22:46 am

"By George" what an interesting summary. Thanks Mike. On reflection it appears that the information provided might need refining. with examples of the missing plants.
Perhaps a list of the birds no longer seen on the Corinella Reserve could be provided so habitat could be reinstated, that would be a good start.

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