What happens to energy in an ecosystem?
Energy flows through ecosystems in food chains and food webs
1. food chain(energy flow)
2. food web真實世間中大多消費者不只一種食物來源故食物鏈成為網狀
3. trophic level營養級
Energy flows through ecosystems in food chains and food webs
1. food chain(energy flow)
2. food web真實世間中大多消費者不只一種食物來源故食物鏈成為網狀
3. trophic level營養級
caterpillar毛蟲
robin知更鳥
hawk鷹,隼
sperm whale 抹香鯨
crabeater seal食蟹海豹
elephant seal象海豹
Leopard seal 豹海豹
petrel 海燕
adelie penguin 阿德利企鵝
carnivorous肉食性的
plankton浮游生物
herbivorous食草的
zooplankton浮游動物
phytoplankton浮游植物
krill磷蝦
Usable energy decreases with each link in a food chain or web
4. def biomass生物量(the dry weight of all organic matter contained in its organisms)
5. ecological efficiency 2% to 40%, 10% is typical(熱力學第二定律)
6. pyramid of energy flow能量金字塔 (吃蔬果少吃肉可減碳)
7. food chains and webs rarely have more than four or five trophic levels
Some ecosystems produce plant matter faster than others do
8. gross primary porductivity (GPP)粗初級生產力, net primary productive(NPP)淨初級生產力=GPP-R(respiration)
9. human (1%)now use, waste, or destory about 20-32% of the earth's total potential NPP(承載量)
robin知更鳥
hawk鷹,隼
sperm whale 抹香鯨
crabeater seal食蟹海豹
elephant seal象海豹
Leopard seal 豹海豹
petrel 海燕
adelie penguin 阿德利企鵝
carnivorous肉食性的
plankton浮游生物
herbivorous食草的
zooplankton浮游動物
phytoplankton浮游植物
krill磷蝦
Usable energy decreases with each link in a food chain or web
4. def biomass生物量(the dry weight of all organic matter contained in its organisms)
5. ecological efficiency 2% to 40%, 10% is typical(熱力學第二定律)
6. pyramid of energy flow能量金字塔 (吃蔬果少吃肉可減碳)
7. food chains and webs rarely have more than four or five trophic levels
Some ecosystems produce plant matter faster than others do
8. gross primary porductivity (GPP)粗初級生產力, net primary productive(NPP)淨初級生產力=GPP-R(respiration)
9. human (1%)now use, waste, or destory about 20-32% of the earth's total potential NPP(承載量)
aerobic需氧的;有氧的
expense開支;經費
swamp林澤,mash草澤 A marsh is different from a swamp, which has a greater proportion of open water surface, and is generally deeper than a marsh. In North America, the term swamp is used for wetland dominated by trees rather than grasses and low herbs.
expense開支;經費
swamp林澤,mash草澤 A marsh is different from a swamp, which has a greater proportion of open water surface, and is generally deeper than a marsh. In North America, the term swamp is used for wetland dominated by trees rather than grasses and low herbs.
