Land within the Arctic region has seasonally varying snow and ice cover , with predominantly treeless permafrost permanently frozen underground ice containing tundra. Arctic seas contain seasonal sea ice in many places. The Arctic region is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme conditions. Life in the Arctic includes zooplankton and phytoplankton , fish and marine mammals , birds, land animals, plants and human societies.
Tropical Grassland/Savanna - Research Paper Example
Biomes - Term Paper
Rising temperatures are disrupting a primary engine of life on Earth: photosynthesis. A recent study from Brazil adds to fears that climate change is altering the face of the planet. This ecoregion abjacent to the Amazon Rainforest is where savanna, grasslands and forests mingle. The area has warmed perceptibly in recent decades, and heat waves that regularly sweep the region are becoming hotter and dryer. How much a leaf warms depends on how much solar radiation it absorbs and what it loses through conduction and as long-wave radiation. Leaves facing the harsh tropical sun heat up faster than the ambient air around them.
In Arctic Siberia, Russian scientists are trying to stave off catastrophic climate change—by resurrecting an Ice Age biome complete with lab-grown woolly mammoths. Only after he smashed us into the first tree did the connection become clear. We were driving through a remote forest in Eastern Siberia, just north of the Arctic Circle, when it happened. The summer thaw was in full swing.
The core areas of the Cerrado biome are the Brazilian highlands , the Planalto. The main habitat types of the Cerrado consist of forest savanna, wooded savanna, park savanna and gramineous -woody savanna. Savanna wetlands and gallery forests are also included. The first detailed European account of the Brazilian cerrados was provided by Danish botanist Eugenius Warming in the book Lagoa Santa ,  in which he describes the main features of the cerrado vegetation in the state of Minas Gerais. Since then vast amounts of research have proved that the Cerrado is one of the richest of all tropical savanna regions and has high levels of endemism.