Search results
Results From The WOW.Com Content Network
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → Daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
Terrestrial ecosystems occupy 55,660,000 mi 2 (144,150,000 km 2), or 28.26% of Earth's surface. [5] Major plant taxa in terrestrial ecosystems are members of the division Magnoliophyta (flowering plants), of which there are about 275,000 species, and the division Pinophyta (conifers), of which there are about 500 species.
Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...
Temperate deciduous or temperate broad-leaf forests are a variety of temperate forest 'dominated' by deciduous trees that lose their leaves each winter. [1] They represent one of Earth's major biomes , making up 9.69% of global land area. [ 2 ]
In plants, it is the result of natural processes. "Deciduous" has a similar meaning when referring to animal parts, such as deciduous antlers in deer, [5] deciduous teeth (baby teeth) in some mammals (including humans); or decidua, the uterine lining that sheds off after birth.
An oak forest is a plant community with a tree canopy dominated by oaks (Quercus spp.). In terms of canopy closure , oak forests contain the most closed canopy, compared to oak savannas and oak woodlands .
The Central forest region touches 30 states from Cape Cod to the Rio Grande and back up to Canada. This forest is mostly deciduous which means that is green in the summer and bare in the winter. Although the main component is hardwood, there are several important softwoods. Eastern white pine and Virginia pine are common throughout the forest.
The boreal forest of Canada is considered to be the largest intact forest on earth, with around 300,000 square kilometres (120,000 sq mi) undisturbed by roads, cities or industry. [18] The Canadian Arctic tundra is the second-largest vegetation region in the country consisting of dwarf shrubs , sedges and grasses , mosses and lichens . [ 19 ]