Schiltach is considered by many as the most beautiful town in the Black Forest, Germanyand surely all of those people cannot be all wrong.The town is cute indeed, the building are colourful and well-preserved and it has avery 'homey' atmosphere. But enough about the town, this post is about the ducks :) These ducks were photographed in the water canal that passed by the car park. Spending some time observing the group and some interesting behaviours can be seen and photographed.
Sunday, March 27, 2011
On Site: Ducks in Schiltach
Schiltach is considered by many as the most beautiful town in the Black Forest, Germanyand surely all of those people cannot be all wrong.The town is cute indeed, the building are colourful and well-preserved and it has avery 'homey' atmosphere. But enough about the town, this post is about the ducks :) These ducks were photographed in the water canal that passed by the car park. Spending some time observing the group and some interesting behaviours can be seen and photographed.
Sunday, March 13, 2011
On site: Triberg
The town of Triberg, hidden in the dense Black Forest, Germany is most famously known for its waterfalls, but while I was walking around, the waterfall, as beautiful as can ben, was what capture my attention the least.In fact, the flora and fauna that embraces the waterfall is also worthy of recognition. There are squirrels, black and red, nutcrackers and other birds, marching around, trying to escape the human eye and the camera lenses.
Wednesday, March 9, 2011
On Site: On the move
Tuesday, March 8, 2011
On site: Sea Lion
Monday, March 7, 2011
Yesterday's Zoo
Very cute video about extinction and the importance of wildlife conservation by SHANE DEROLF
read more:http://news.mongabay.com/2011/0306-derolf_yesterdays_zoo.html?utm_campaign=General+news&utm_medium=Twitter&utm_source=SNS.analytics
Sunday, March 6, 2011
Vanishing of the Bees
Vanishing of the Bees - Trailer from Bee The Change on Vimeo.
Film by: George Langworthy and Maryam Henein
A Change of Colour: Tawny Owl
Recent studies in Finland, show that tawny owls (Strix aluco) populations are changing their plumage colour from grey to brown. It seems that the increase in owls with brown plumage may be related to climate change and the consequent decrease in snow cover.
Feather colour is hereditary, that is, is passed genetically from generation to generation, and the grey allele is said to be dominant over the brown allele, therefore, when both alleles are present, the progeny is grey-feathered, and only when it possess two brown alleles, the plumage is brown instead.
The terminology of colour change is misleading as tawny owls do not suffer any colour changes during its lifetime, they remain with the same colour, so why are scientists saying that the colours are changing?
Well, the truth is, that the brown phenotype (colour) is becoming more predominant, with a 20% increase. Thus nowadays the population of brown tawny owls makes up 50% of the entire population.
Grey and Brown Tawny Owls
Why this increase?
Population phenotypes change due to environmental pressures that select for advantageous characteristics, that is, if there is an advantage of having brown feathers, then the grey individuals will die, and the brown individuals will survive and pass on their winning genes. This is called Natural Selection and the 'survival of the fittest'.
So in the case of the tawny owl, it has been suggested that due to the decrease in snow cover, brown owls have more chances of survival as predators cannot detect them as easily as when there is thick snow cover.
The grey owls, conversely, are more easily camouflaged by the snow, and thus had higher survival rates, which counted for the predominance of this phenotype in the population.
However, these brown individuals possess disadvantageous genetic traits such as a weaker immune system and higher metabolism, requiring more foraging in search for food. Such characteristics are not found in the grey populations thus the increase of this phenotype may increase the vulnerability of the species overall.
Thus, it has been found that climate-driven selection is causing the species to evolve and raises concerns as to whether the grey 'gene pool' may disappear, causing a lower genetic diversity and a reduction in the variety of heritable material, which can cause the species to become genetically vulnerable to other environmental pressures and be at risk.
Such studies are important in determining not only the impacts of climate change on species but also the mechanisms from which species evolve and attempt to overcome adverse conditions, important information that is useful to our understanding of ecological interactions and allows scientists to devise more accurate and efficient conservation measures in order to prevent the detriment caused in our environment by human and non-human induced threats.
Thursday, March 3, 2011
There's a new species in town
Yesterday the Eastern Cougar was declared extinct but today the media is talking about a new species. Some come, some go it seems.
Wednesday, March 2, 2011
End of the Cougar 'Big Foot'
Today is a sad day for all conservationists and for all of the non-conservationists. We lost someone. A species that was long questioned of its existence, yet a glimmer of hope still lingered in the eyes of cougar enthusiasts. Named the "ghost cat", the Eastern Cougar has been official declared extinct by the U.S FIsh and Wildlife Services on the 2nd of March of 2011.
Eastern Cougar (Puma concolor couguar) is a subspecies of the puma or mountain lion which since the killing of the last known individual in 1938 has been surrounded by a lot of speculation and myths.
Not a lot can be said about this unique subspecies as perhaps it vanished too soon for proper research to be conducted, thus its confirmed loss today, signifies, among many things, the loss of potentially insightful scientific knowledge that will never be obtained.
In 1973, the Eastern Cougar was placed in the endangered species list, e
ven though it wasn't certain whether the subspecies still walked around Florida. It is said that some hunters and outdoor enthusiast believed that an
Eastern Cougar
elusive breeding population was still roaming around. Encouraged by the people and backed by e 108 confirmed sighting between 1900 and 2010 from the Wildlife Service, researchers gathered in order to find that "ghost" population, but came back empty-handed.
If there was a breeding population, there should have been traces of it, scats, snow tracks, road-kills, caught in trail cameras, just to name a few. But nothing was detected, not a single trace.
It is certainly a great loss for the planet and many conservationists may feel defeated, however, there is still time to save the other subspecies of puma: the Florida Panther.
If the confirmation of the extinction of the Easter Cougar, conservation efforts can now turn to the other threatened mammal, hopefully having a happier-everafter.
The Florida Panther can be rescued from extinction by preservation its current habitat and reintroducing it to its historical homes. And there is a perfect place to start: Okefenokee refuge
Sure it is a bit unpronounceable but the pumas will not mind as it seems that is houses the habitat requirements which would perhaps save this equally unique subspecies and restore nature's balance.
Pumas, being a top predator, have a critical control on the lower trophic levels, in a process called Mesopredator suppression, and the dramatic loss of such predators is thus resulting in the increase of this larger herbivores, which can potentially have catrastrophic effect to the ecosystem around them. One consequence is the overgrazing of the flora by feral hog, which include several native plants. Being a
non-native
species the feral hog is a threat to the native biodiversity found in Okefenokee, but with theTuesday, March 1, 2011
Sun Come Up
Sun Come Up Trailer from Sun Come Up on Vimeo.