Biogeography

Biogeography is the study of the geographical distribution of plants and animals.

A wolf dog sitting in the grass.

European Wolves Could Be Replaced by Wolf-Dog Hybrids

Katarina Samurović

Scientists are now worried that the future of the 17,000 wolves known to live in Europe is in jeopardy due to crossbreeding with dogs.

An analysis of 24 years of radar data shows a shift to earlier spring migrations, particularly for birds at higher latitudes where regions are warming more quickly. Figure: Horton et al., 2020.

Spring Bird Migration is Happening Earlier for Some Birds

Caitlin Dempsey

With changes in temperature due to climate change, researchers looking at  24 years of radar data from the National Oceanic and Atmospheric Administration (NOAA) have found that migrating birds were more likely to arrive at certain stops earlier than they would have twenty years ago. 

A long-term habitat connectivity experiment. Source: Damschen et al., 2019.

Connecting Fragmented Habitat Improves Biodiversity

Elizabeth Borneman

Researchers found that connecting natural corridors of habitat to one another promotes biodiversity in the plants and animals that are able to thrive in those locations.

Dumbo octopus. Source: NOAA.

Life at the Entrance to the Arctic Ocean

Caitlin Dempsey

Researchers traveled to the Chukchi Borderlands to learn more about deep ocean life at the entrance to the Arctic Ocean.

Do Bison Influence the Spring Season?

Caitlin Dempsey

Researchers took a look at the foraging behavior of Yellowstone’s bison (Bison bison) to see how well their grazing behavior fits with the Green Wave Hypothesis.

How Wildfires are Changing Boreal Forests and Increasing Emissions

Katarina Samurović

Boreal forests are changing along with our climate.

Small-scale Deforestation is on the Rise in the Amazon

Caitlin Dempsey

Researchers analyzed forest loss rates across the entire Amazon between 2001 and 2014. 

How Refugia Will Protect Some Animals and Plants from Climate Change

Elizabeth Borneman

Scientists and conservationists are working to find refuge areas in order to further land management plans and climate change predictions.

Three goats standing on gravel.

How Goats in Samothraki are Increasing Landslides

Elizabeth Borneman

Overgrazing by the island's large goat population has left Samothraki’s hills and valleys unprotected by vegetation, making them vulnerable to landslides and erosion from heavy rainfall and other weather.

Researchers Find Thriving Bee Populations in Power Line Corridors

Elizabeth Borneman

Researchers have found that the bee populations located in the power line corridors were nearly ten times as high as the bee populations living in the more forested areas nearby.

Haloarchaea are salt-loving microorganisms that impart the pink and red colors of Lake Natron in Tanzania. Image: Landsat 8 acquired March 6, 2017.

This Lake is Home to the Highest Concentrations of Lesser Flamingos in East Africa

Caitlin Dempsey

The protective salt marshes that ring Lake Natron in Tanzania have nurtured the highest concentrations of lesser and greater flamingos in East Africa.

Mule Deer Create Mental Maps Of Migration Routes

Katarina Samurović

During their seasonal migrations, large grazing mammals like deer are able to easily navigate the state of Wyoming.

Structurally Complex Forests Better At Carbon Capture, Study Shows

Katarina Samurović

Researchers have discovered that structurally diverse forests are better at carbon sequestration that monocultures.

How Scientists Used Satellite Imagery to Find an Untouched Mountain Rainforest

Elizabeth Borneman

Dr. Julian Bayliss, a Welsh researcher, used Google Earth satellite images to pinpoint a small rainforest at the summit of Mount Lico.

Mapping Where Planting Trees Can Help with Climate Change Mitigation

Mark Altaweel

Researchers have mapped out where to plant trees to mitigate climate change.

The dark-green, rectangular, reforested area of the Auwahi dryland forest in Hawaii as seen from above with surrounding grassland. Photo: Arthur Medeiros, USGS. Public domain.

What Is The Difference Between Afforestation and Reforestation?

Katarina Samurović

Both reforestation and afforestation represent a conversion of non-forested areas into new forests. So what's the difference between the two terms?

Iceland's land mass is sparsely populated by trees. Image: NASA, public domain.

Iceland’s Long Road to Reforestation

Katarina Samurović

Reforestation and afforestation have a long tradition in Iceland, but the results are barely noticeable - only a tiny fraction of the land is now covered in forests.

Frozen Lake Trout eggs being weighed for a thiaminase assay. Photo: Diane Nicks, USGS. Public domain.

Is a Vitamin Deficiency Killing Wildlife?

Katarina Samurović

Researchers believed that thiamine (Vitamin B1) deficiency is playing a role in declining populations of some wildlife.

The characteristic bull’s-eye patterned rash after the bit from a blacklegged tick infected with Borrelia burgdorferi. Photo: Centers for Disease Control

How Climate Change is Affecting Tick Season

Geo Contributor

As the global climate warms, it is more likely that some ticks will remain active through the warmer winters and can expand their habitats into new areas.

An annotated aerial of a church forest in South Gondar, Ethiopia. Source: Klepeis et al., 2016

Ethiopia’s Church Forests Are Pockets of Biodiversity

Caitlin Dempsey

Also known as coptic forests, church forests range in size from a few acres to 300 hectares and provide a range of spiritual and ecological benefits to the local community.  

Photo of a Piping Plover on the sand.

The Foot-trembling Bird Gets the Worm

Caitlin Dempsey

Foot-trembling is a foraging technique used by some species of birds to find prey beneath the surface of the ground.

Source: Watson et al., 2018

Mapping the Last Wilderness

Katarina Samurović

An international group of scientists led by James E. M. Watson and James R. Allan mapped the world’s remaining terrestrial wilderness in 2016.

Black-legged Kittiwakes forage on Pacific sand lance and capelin near their colony on Gull Island, Cook Inlet on June 28, 2018. Photo: Sarah Schoen, USGS, Alaska Science Center. Public domain.

Industrial Fishing Has a Global Impact on Bird Populations

Olivia Harne

A study published in Current Biology - from the Sea Around Us project at the University of British Columbia and French National Center for Scientific Research in Montpellier - provides evidence that industrial fishing practices are starving seabirds around the world.

These Wolves in Minnesota are Very Very Territorial

Caitlin Dempsey

Researchers with the Voyageurs Wolf Project released maps showing 68,000 GPS-locations of seven wolves being tracked.  

A Brief Introduction to Medieval Music

Caitlin Dempsey

Music was an important aspect of Medieval life.

Brought to the Carribean by enslaved Africans, this is the only baobab tree on St. John. Photo: Carrie Stengel, NPS, Virgin Islands National Park, public domain.

Study Shows Southern African Ancient Baobabs Are Dying

Katarina Samurović

A study published in the journal Nature Plants found that 9 of out of 13 oldest, and 5 of 6 most massive baobab trees died during the study, many of them suddenly.