Bat will tell ya

Let Us Be Bats

The National Bat Monitoring Programme surveys are carefully designed so that anybody can take part in monitoring these fascinating but easily overlooked mammals. As well as being of great value to bat conservation, the surveys are fun and rewarding to carry out.

They usually involve visiting a roost or potential foraging site on two evenings in the summer. We run different surveys which cater to different levels of experience and knowledge.

Mr_c_Darwin

 

UK Bat Research Group

 

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Not a UK Bat!

 

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The Last Universal Ancestor

Evolutionary processes give rise to diversity at every level of biological organisation, including the levels of species, individual organisms, and molecules.

Mr_c_Darwin

All life on Earth shares a common ancestor known as the last universal ancestor, which lived approximately 3.5–3.8 billion years ago, although a study in 2015 found “remains of biotic life” from 4.1 billion years ago in ancient rocks in Western Australia. According to one of the researchers, “If life arose relatively quickly on Earth … then it could be common in the universe.”

Repeated formation of new species (speciation), change within species (anagenesis), and loss of species (extinction) throughout the evolutionary history of life on Earth are demonstrated by shared sets of morphological and biochemical traits, including shared DNA sequences.

These shared traits are more similar among species that share a more recent common ancestor, and can be used to reconstruct a biological “tree of life” based on evolutionary relationships (phylogenetics), using both existing species and fossils.

charles darwin

The fossil record includes a progression from early biogenic graphite, to microbial mat fossils, to fossilized multicellular organisms. Existing patterns of biodiversity have been shaped both by speciation and by extinction. More than 99 percent of all species that ever lived on Earth are estimated to be extinct. Estimates of Earth’s current species range from 10 to 14 million, of which about 1.2 million have been documented.

 

In the mid-19th century, Charles Darwin formulated the scientific theory of evolution by natural selection, published in his book On the Origin of Species (1859). Evolution by natural selection is a process demonstrated by the observation that more offspring are produced than can possibly survive, along with three facts about populations:

1) traits vary among individuals with respect to morphology, physiology, and behaviour (phenotypic variation),

2) different traits confer different rates of survival and reproduction (differential fitness), and

3) traits can be passed from generation to generation (heritability of fitness). Thus, in successive generations members of a population are replaced by progeny of parents better adapted to survive and reproduce in the biophysical environment in which natural selection takes place.

This teleonomy is the quality whereby the process of natural selection creates and preserves traits that are seemingly fitted for the functional roles they perform. Natural selection is the only known cause of adaptation but not the only known cause of evolution. Other, nonadaptive causes of microevolution include mutation and genetic drift.

Blind_Watchmaker

driver ants – are they really such a menace?

Dorylus clean up for nature

Dorylus, also known as driver ants, safari ants, or siafu, is a large genus of army ants found primarily in central and east Africa, although the range also extends to
tropical Asia.

The term siafu is a loanword from Swahili,and is one of numerous similar words from regional Bantu languages used by indigenous peoples to describe
various species of these ants.

 

 

Seasonally, when food supplies become short, they leave the hill and form marching columns of up to 50,000,000 ants, which are considered a menace to
people, though they can be easily avoided; a column can only travel about 20 metres in an hour. It is for those unable to move, or when the columns pass through homes,
that there is the greatest risk…

Source 

 

 

 

The Importance of Elephants

 

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The magnificent African Elephant

100,000 elephants in Africa were killed for their ivory in just three years between the years 2010 & 2012.

 

Find more information and share about elephants by giving support to these sites:

 

MumWendi-withNewBorn

 

 

 

 

 

 

 

Education for the elephant children – fact guide. 

 

 

 

 

 

 

 

 

 

Means of Natural Selection

Selimiye_Camii_ve_Mavi_Gökyüzü
Coleyartastro – Sun over Religion.

 

Darwin’s Re:Evolution is natural…

 

It presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution. Darwin included evidence that he had gathered on the Beagle expedition in the 1830s and his subsequent findings from research, correspondence, and experimentation.

 

Evolved?

 

Darwin’s book introduced the scientific theory that populations evolve over the  course of generations through a process of natural selection.

 

Continue reading “Means of Natural Selection”