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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.
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 ...
An example of a topological food web (image courtesy of USDA) [1] The soil food web is the community of organisms living all or part of their lives in the soil. It describes a complex living system in the soil and how it interacts with the environment, plants, and animals. Food webs describe the transfer of energy between species in an ecosystem.
Agriculture in Albania is still a significant sector of the economy of Albania, which contributes to 22.5% of the country's GDP. [1] The country spans 28,748 square kilometres (11,100 square miles) of which 24% is agricultural land, 36% forest land, 15% pasture and meadow and 25% urban areas including lakes, waterways, unused rocky and mountain land. [2]
The observed values of connectance in empirical food webs appear to be constrained by the variability of the physical environment, [4] by habitat type, [5] which will reflect on an organism's diet breadth driven by optimal foraging behaviour. This ultimately links the structure of these ecological networks to the behaviour of individual organisms.
Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin and contains essential nutrients such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy, maintain life, or stimulate ...
The ministry is responsible for agriculture, rural development, food safety and consumer protection, fisheries and aquaculture, and waters administration. It was formed as the Ministry of Agriculture within the special cabinet created on 4 December 1912, right after the Declaration of Independence , with the first minister Pandeli Cale .
As one of the world's few ancient lakes, it is the lake which contains the largest number of endemic species in the world, with 212 species of animals and plants. [ 82 ] [ 83 ] It is the habitat for many rare fish species such as the endangered Ohrid trout , one of the most ancient trout in the entire Balkan Peninsula .