


The bullfrog tannie
By Sheree Béga
Anne Mearns remembers her childhood spent playing in the wetlands on Gauteng's East Rand, surrounded by her "living friends" - frogs. But today most of those wetlands have vanished along with their gentle, croaking inhabitants.
"Many of the wetlands are built up into roads and cluster homes," says Mearns from her Benoni plot.
"These wetlands were the treasure fields of birds, animals, mammals, fish, amphibians and many species of plants that are gone."
Now Mearns, a recipient of the UN Environmental Global 500 Role of Honour for her work on wetlands, is leading a one-year frog identification and awareness campaign with the Gauteng Conservancy Association, which hopes to gather data on the status of frogs across South Africa.
"For this frog identification census we want information on all kinds of frogs, where they occur, what type, what numbers, from all over the country. Call it a national frog count," explains Mearns, adding three-quarters of SA's 110 species are dependant on disappearing wetlands.
The initiative started in March. But frogs have spent the past few months in hibernation and will start to emerge to breed and feed only with the first spring rains.
Mearns is urging residents to identify frogs in their gardens and in local wetlands and grasslands, and report back to the project. She has already received hundreds of phone calls and e-mails. "There's a very big awakening about frogs. We started as a provincial project but people all over South Africa are involved. This is a way to make people aware that there's a place for nature - and for frogs too," says Mearns, who is compiling information booklets on frogs for nursery, primary and high schools, to be delivered within weeks.
In the late 1990s Mearns led a wetland count in the Benoni region that identified about 135. Few remain. Mearns reserves her scorn for property developers destroying the region's wetlands, and questions the authorities who continue to approve development in sensitive areas.
"These people couldn't care less about wetlands or frogs. It's all about money. I've had developers chase me out of their developments, or who laugh at me and call me the 'old bullfrog tannie'. But if you take out a wetland, you destroy so many different kinds of life."
Frogs are vital indicators of the health of ecosystems. "Our water is so polluted, and if frogs are no longer there, it's a sign of how bad it is. I've put myself in the place of these thousands of frogs. If my home is polluted, I have to leave." Mearns is enamoured by the area's giant bullfrogs that live and breed in the surrounding Bullfrog Pan and Sand Pan, which is increasingly encircled by housing developments and major roads. "If you pick up a dead adult giant bullfrog that has been driven over, it's very sad. It can live for 30 years. Last [rainy] season, we rescued 105 adult bullfrogs. We're so happy when we find them because it means they're still around.
"When the first rains come I know I'm going to be so busy. Last year, people arrived at our plot with hundreds of frogs in their car boots that they rescued from being squashed on roads, and we reintroduced them to the wetlands in Benoni."
Conservationists declared 2008 the Year of the Frog because, globally, one in three of the 6 000 known amphibian species, including frogs, toads and salamanders, faces extinction from habitat loss, climate change, pollution, pesticides and invasive species.
A deadly parasitic fungus called amphibian chytrid, believed to have originated from the export of African clawed frogs in SA for use in pregnancy tests abroad, is having a catastrophic effect on global frog populations.
Martin John van Rooyen, an aquarist at Johannesburg Zoo, which is running a breeding programme for local frog species, says places like Boksburg used to be "frog country". "It's amazing how habitat destruction and development have not only changed the life of frogs but also that of birds like the blue crane, which used to be in the wetlands in Midrand. We need to protect these places and invest in our future."
Contact Mearns on 073-210-3340 or
a.mearns@mtnloaded.co.za
This article was originally published on page 8 of The Star
on September 13, 2008

Jozi to get its own green thumb
21/06/2008 17:38 - (SA)
A
planned conservancy along Joburgs southern edge will
link the Klipriviersberg Nature Reserve with the
hills of Roodepoort, writes LUCILLE
JOZI’s distinctive ridges are to be the links for a huge conservancy that could connect Ekurhuleni’s green spaces in the east to the tall koppies of Roodepoort in the west.
The initiative is being driven by development consultant Andrew Barker and Clem Kourie, the honorary chairperson of the Klipriviersberg Nature Reserve Association (KNRA), together with Johannesburg City Parks.
“The
KNRA,
This
project will include the stretch of land from the N12 southern bypass to the
A conservancy is a registered voluntary association between land users and landowners who wish to cooperate to manage their natural resources in an environmentally-friendly manner without changing the land use of their properties.
“The establishment of conservancies gives the ordinary member of a community the opportunity to get involved in the conservation and management of the local environment,” says the KNRA’s website.
There
are 32 conservancies in the province registered with the
Kourie
says residents of the southern suburbs, including Glenanda,
Glenvista, Mulbarton, Mondeor and
“A
critical component of this proposal is the sustainable promotion and
development of the natural environmental resources and rehabilitation of areas
located along the
The conservancy will focus on the 680ha nature reserve south of Mondeor. Game has recently been introduced to the reserve, making it possible for residents to hike and watch game just 10km from the city centre.
“The
area is rich in natural resources, varying from the beautiful wooded Klipriviersberg range of hills to grasslands and wetlands
and to prolific birdlife along the
“It contains red-data species as well as numerous heritage sites such as the ruins of the dwellings of Sotho and Tswana people who lived there 300 and more years ago, an old Voortrekker farmstead, Boer War fortifications and sites of interest from the goldrush days.”
Kourie says the wider area has “considerable tourism, recreational, cultural, educational and developmental potential”.
The
initiative has the backing of many of the players in the area. The South of
Sojo’s main aim is to promote business, tourism and the environment across the southern side of the city.
The Sojo Development Band, established in 2001, is a key focus in Region F’s spatial development framework. The aim is to maximise the value of existing economic and tourism nodes to enhance job creation and investment in the south.
This
will incorporate business, tourism and heritage facilities in
This initiative is to be called the Sojo Business, Tourism and Recreation Loop and will benefit from the establishment of the conservancy.
The
nearby Afrisam quarry and the
The
conservancy will also include the
To the east is the Rietvlei Zoo Farm, the Thaba Ya Batswana and Stonerivers Arches developments, Rand Water property and, further east, the wetlands and pristine hillsides of Ekurhuleni. The estates across Meyersdal to the east will be a valuable addition. All these parties are interested in the new development.
To the north, the Mondeor and Ridgeway hills will also be part of the conservancy and various residential and agricultural holdings will be included.
These areas have valuable recreation facilities already in place. These include cycling, mountain biking, golf and canoeing and extend to micro-lighting and model airplane activities, says Barker.
The agriculture department and City Parks are helping to push the process. City Parks’ conservation specialist, Kenneth Mabila, has been driving the initiative on behalf of the city.
He
says the conservancy ties in with the city’s grasslands project and
The
grasslands project entails the preservation of the biodiversity in the
The conservancy has been incorporated into the city’s integrated development plan and spatial development framework. Once established, it will be the city’s second conservancy.
A conservancy was launched in March 2007 in the northern reaches of Joburg. Called Gekco or the Greater Kyalami Conservancy, it encompasses 4 500ha of mostly agricultural land west of the N1 in Midrand.
Its goal is to “conserve, sustain and share the ecology and natural character of the greater Kyalami area”, says the Gekco website.
Close to a thousand landowners are members of the conservancy and their activities have so far included cleaning up the Jukskei River, planting indigenous trees and removing alien species, keeping an eye on irregular developments and monitoring cellphone tower erections, the rehabilitation of three wetlands in the area, and caring for endangered fauna and flora red-data species.
They are working on creating an eco-trail that includes cycling, hiking and horse paths.
The area contains a major equine industry which creates thousands of jobs. Gekco aims to protect this industry and the main open spaces in the conservancy.
The
first public meeting to take the southern conservancy proposal forward was held
on Wednesday at the Klipriviersberg Recreation Centre
in

Uitroeiers van indringerplant
‘nie xenofobies’
Jun 12
2008 09:24:28:247PM
Die
“Slag van Lantana-laagte” is die naweek
geveg toe sowat 30 inwoners van die Seringveld Bewaria, noord van Pretoria, meer as 400 van dié indringerplante uitgekap en -gegrawe het.
Elise
Tempelhoff
Die
“Slag van Lantana-laagte” is die naweek
geveg toe sowat 30 inwoners van die Seringveld Bewaria, noord van Pretoria, meer as 400 van dié indringerplante uitgekap en -gegrawe het.
Volgens mnr. Jan Visser het 12 grondeienaars en helpers besluit om dít te
doen omdat lan-tanas (Lantana camara) die hele gebied inneem
en inheemse plantegroei “dooddruk.”
Volgens
dr. Alan Urban van die Landbounavorsingsraad (LNR) se
instituut vir plantbeskerming, en lantana-kenner,
is dié struik een van die mees geharde indringers wat die meeste skade, veral aan
weiding, aanrig.
Urban het gesê as al die lantana in die land “skouer
aan skouer” staan, sal dit
’n gebied van 70 000 ha beslaan.
Op plekke waar lantana dig bymekaar groei, is die gebied ondeurdringbaar omdat hulle dorings met mekaar ineenvleg.
Die
Seringveld Bewarea het die lantana-oorlog die naweek gevoer op die Boekenhoutkloof-grondpad se padreserwe
en 1,2 km pad skoongemaak.
Volgens
Visser is die struike afgekap en die stamme daarna met ’n goedgekeurde gif geverf.
Visser het vertel toe hy 20 jaar gelede
in die Seringveld Bewarea kom woon het, was daar
nie ’n enkele lantana op sy grond nie
en hy het toe nie geweet wat
dit is nie. Hy het wel op ’n dag
een struik op ’n buurplaas raakgeloop. Iemand het toe aan hom gesê
dit is lantana.
“As
ek vandag op my grond loop, trap ek heeltyd op lantanas of loop teen hulle
vas.”
Visser meen die pes het
sedert die laat jare tagtig in dié omgewing vertwintigvoudig.
Urban
het gesê ’n lantana is ’n hibried wat
ontstaan het weens die kruising van twee verwante spesies.
Die moeder- en vaderplante kom oorspronklik van Sentraal- en Suid-Amerika. Iemand het in die 1700’s die twee verwante spesies
na Europa
geneem en dit gekruis.
“Daar is tans 650 lantana-hibriede
en hulle is wêreldwyd vervuil. Feitlik die hele wêreld
voer tans ’n stryd om van hulle ontslae
te raak,” vertel Urban.
Hy het gesê in die 1800’s was dit mode om ’n lantana in jou tuin te
hê en die (hibriede-)plante is opsetlik
wêreldwyd versprei.
“Vandag voer ons
’n stryd teen die lantana omdat
hy ons inheemse
plante verdring en beeste van weiding ontneem.
“Ons is dus nie
xenofobies nie en voer nie ’n stryd
teen alles wat vreemd is nie, maar hierdie plant bedreig ons eie
veld en plante se voortbestaan,” het Urban gesê.
Die
LNR het al sowat 12 natuurlike agente vir die biokontrole van lantana landwyd vrygelaat. Dié biokontrole is suksesvol aan die kus van KwaZulu-Natal, maar in die res van die binneland is nog min welslae behaal. As deel van ’n aanvoorprojek is ’n snuitkewer wat sy hele lewensiklus
in die lantana se blaarstingel voer
en die plant se natuurlike vyand
is, asook ’n siekte wat die plant se wortels aanval, in Richardbaai en Nelspruit losgelaat.
eliset@beeld.com