Login

Join for Free!
112023 members




Biology Articles » Biogeography

Biogeography

Biogeography is a science that attempts to describe the changing distributions and geographic patterns of living and fossil species of plants and animals. It is also concerned with the factors responsible for the variations in distributions. It therefore wants to answer questions as to where do species occur, how the species got to be where they are, and where are the greatest concentrations. It also tries to explain in part the causes of biodiversity.


Biogeography Articles

Out Of Africa -- Bacteria, As Well: Homo Sapiens And H. Pylori Jointly Spread Across The Globe
When man made his way out of Africa some 60,000 years ago to populate the world, he was not alone

Date: 29 Nov 2007, Rating: 1.00

Geography Predicts Human Genetic Diversity
By analyzing the relationship between the geographic location of current human populations in relation to East Africa and the genetic variability within these populations

Date: 29 Nov 2007, Rating: 1.67

Why Are There So Many More Species Of Insects? Because Insects Have Been Here Longer
In a study appearing in the April issue of the American Naturalist, McPeek and Brown show that many insect groups like beetles and butterflies have fantastic numbers of species

Date: 29 Nov 2007, Rating: not rated

Global Map Shows New Patterns Of Extinction Risk
The most detailed world map of mammals, birds and amphibians ever produced shows that endangered species from these groups do not inhabit the same geographical areas

Date: 29 Nov 2007, Rating: not rated

First Surveys Of Tanzanian Mountains Reveal 160+ Animal Species, Including New & Endemic
The first field surveys of the Rubeho Mountains in Tanzania revealed over 160 animal species--including a new species of frog and eleven endemic species

Date: 29 Nov 2007, Rating: 3.00

New Studies Find Amazing Concentration Of Species Unique To East African Mountains
New studies published this month in the scientific journal Biological Conservation document an amazing concentration of over 1000 species unique

Date: 29 Nov 2007, Rating: 2.33

Understanding Earth's Underwater Forests: Kelp Demography Off The Coast Of California
They share many of the same qualities as old growth forests, but the only way to really appreciate these magnificent places is through the lens of a diving mask.

Date: 29 Nov 2007, Rating: 1.00

Unraveling The Mystery Of Modern Potatoes' Origins
When it comes to veggies, almost everyone can agree on potatoes. But despite its popularity, the common brown potato has a colorful history that some researchers are still disputing.

Date: 29 Nov 2007, Rating: not rated

New Research Proves Single Origin Of Humans In Africa
Research has proved the single origin of humans theory by combining studies of global genetic variations in humans with skull measurements across the world.

Date: 29 Nov 2007, Rating: not rated

University Of Florida Discovery Raises Questions About Origin Of African Mammals
"Into Africa" rather than "Out of Africa" could well be the better description of how certain mammals originated and spread across the world

Date: 29 Nov 2007, Rating: not rated

Saving Space: Climate Change Impact on Species Goes Beyond Latitude
According to a recent study in Ecological Monographs, predicting the impact of climate change on organisms is much more complicated than simply looking at species northern and southern range limits.

Date: 29 Nov 2007, Rating: not rated

New solutions to old problems: widespread taxa, redundant distributions and missing areas in event–based biogeography
The present paper presents the argument that only widespread terminals pose a problem to event–based methods, and three possible solutions are described.

Date: 29 Nov 2007, Rating: 5.00, 11 pages

Biogeographic and species richness patterns of gastropoda on the Southwestern Atlantic
Patterns of richness and biogeography of Gastropoda molluscs were determined based on lists of species from five sites along the southwestern Atlantic.

Date: 29 Nov 2007, Rating: not rated, 7 pages

The Trichoderma koningii aggregate species
The morphological concept of Trichoderma koningii is found to include several species that differ from each other in details of phenotype (including conidium morphology, growth rate) and biogeography.

Date: 29 Nov 2007, Rating: 4.20, 13 pages

Recent transcontinental sweep of Toxoplasma gondii driven by a single monomorphic chromosome
Strains from North America and Europe share distinct genetic polymorphisms that are mutually exclusive from polymorphisms in strains from the south.

Date: 29 Nov 2007, Rating: not rated, 7 pages

Genomics, biogeography, and the diversification of placental mammals
The authors attempted to resolve key uncertainties about the ancient branching pattern of crown placental mammals.

Date: 29 Nov 2007, Rating: not rated, 8 pages

Widespread genetic exchange among terrestrial bacteriophages
A biogeography study involving 25 previously undescribed bacteriophages from the Cystoviridae clade, a group characterized by a dsRNA genome divided into three segments.

Date: 28 Nov 2007, Rating: not rated, 9 pages

Hundreds of thousands of viral species present in the world's oceans
This approach identified tremendous viral diversity with greater than 91% of DNA sequences not present in existing databases.

Date: 24 Jan 2007, Rating: 5.00

Molecular biogeography of the Neotropical fish Hoplias malabaricus (Erythrinidae:Characiformes) in the Iguaçu, Tibagi, and Paraná Rivers
The authors analyzed patterns of similarity of RAPD-PCR genomic markers of samples from Paraná, Iguaçu and Tibagi Rivers.

Date: 25 May 2007, Rating: 8.50, 8 pages

Plate Tectonics, Seaways and Climate in the Historical Biogeography of Mammals
The marsupial and placental mammals originated at a time when the pattern of geographical barriers (oceans, shallow seas and mountains) was very different from that of today, and climates were warmer.

Date: 25 May 2007, Rating: 3.75, 7 pages