A237 LP5 Biogeochemical cycles by NURUL INSYIRAH BTE MOHAMED A https://padlet.com/200155351/z1amz9n7ku61fzgj Made with a quick smile en-us 2021-05-25 02:45:13 UTC 2025-10-24 11:15:37 UTC hello@padlet.com Carbon Cycle (saikit) 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556076051 2021-05-25 02:47:26 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556076051 Phosphorus Cycle (danial) 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556076435 2021-05-25 02:47:36 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556076435 Nitrogen Cycle (gerlaine) 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556077120 2021-05-25 02:47:52 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556077120 Silicon cycle (Insyirah) 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556078344 2021-05-25 02:48:18 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556078344 Biochemical cycles 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556183584 2021-05-25 03:34:25 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556183584 common terms 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556196238 - carbon reservoir 
- carbon sink 
- carbon source
- flux 
- carbon fixation ]]> 2021-05-25 03:40:36 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556196238 within the ocean gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556204697 2021-05-25 03:44:43 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556204697 carbon reservoir 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556204998 - a place where carbon is stored 
e.g rocks and sediments, ocean, atmosphere]]> 2021-05-25 03:44:53 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556204998 between the land and water body near by gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556205393 - Nitrogen fixation by cynobacteria
- Nitrite/nitrate/ammonia in water is used by phytoplankton
- After organisms die, the skin to the bottom and get decomposed by bacteria, which remineralises them into inorganic nitrogen]]> 2021-05-25 03:45:05 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556205393 between the organisms and water gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556206044 Happens within water bodies on top of chemical nitrogen cycle.]]> 2021-05-25 03:45:38 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556206044 carbon sink 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556210425 - carbon reservoir that absorbs more carbon than it releases
e.g carbon forests, soil and ocean]]> 2021-05-25 03:47:51 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556210425 carbon source 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556213078 - a carbon reservoir that releases more carbon than it absorbs
e.g fossil fuels extracted from deep within the ground are a carbon source]]> 2021-05-25 03:49:18 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556213078 flux 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556216826 - rate of exchange between reservoirs 
e.g atmosphere has inflows from decomposition (CO2 released by the breakdown of organic matter)

]]> 2021-05-25 03:51:21 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556216826 carbon fixation 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556221760 - process by which photosynthetic organisms turn inorganic carbon compounds into organic carbon compounds ]]> 2021-05-25 03:54:04 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556221760 purpose: gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556226837 provides a constant source of nutrients for marine vegetation which allows the nutrients to be passed onto other marine animals as they consume the marine vegetation.]]> 2021-05-25 03:56:55 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556226837 common terms seen in the nitrogen cycle: gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556233365 nitrogen fixation
nitrification
denitrification
anammox (fixation)]]> 2021-05-25 04:00:24 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556233365 3 different pumps 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556234596 - physical carbon pump
- biological carbon pump
- carbonate pump]]> 2021-05-25 04:01:06 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556234596 physical carbon pump 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556236671 - physical mixing and sinking of carbonates into the deep ocean
- downwelling currents bring dissolved CO2 down to the deep ocean 
- upwelling currents brings the deep, cold ocean water to the surface, water warms and dissolved CO2
 ]]> 2021-05-25 04:02:18 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556236671 Dissolution 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556237461 - Phosphate from rocks and inland soil washed off into the ocean 
- due to rain 
- will become dissolved phosphate. ]]> 2021-05-25 04:02:45 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556237461 Purpose 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556237913 -ocean pH buffer
-ocean's hardness 
-forms part of the skeleton of marine organism ]]> 2021-05-25 04:03:00 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556237913 Excretion 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556243307 - Faeces of marine animals contain trace amount of phosphorus
 - contribute greatly to the amount of dissolved phosphorus in the ocean.]]> 2021-05-25 04:06:10 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556243307 Decomposition 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556245771 Marine animals that have died will release phosphorus when they decompose.]]> 2021-05-25 04:07:39 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556245771 Purpose of phosphorus for marine life 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556247577 - Phosphorus is a source of nutrients for marine organisms 
- e.g. algae and vegetation. - These organisms form the base of the ocean's food chain 
- necessary so that all marine organisms have sustainable food sources.]]> 2021-05-25 04:08:36 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556247577 How is it a cycle? 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556254227 - Marine organisms such as vegetation and algae take in large amounts of P, 
 - marine animals that decompose, excrete as well as phosphate from rocks and inland that runoff into the ocean act as a source of P. 
- These processes regulate the amount of phosphorus in the ocean and help sustain life.]]> 2021-05-25 04:12:19 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556254227 N2 fixation gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556254458 when N2 from the atmosphere is dissolved is converted to ammonia by microbes]]> 2021-05-25 04:12:28 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556254458 Nitrification gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556257153 conversion of ammonia to nitrate and nitrite by microbes]]> 2021-05-25 04:13:52 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556257153 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556258498 -important nutrient that overlaps with carbon cycle 
-forms the skeleton structures of aquatic plankton

]]> 2021-05-25 04:14:37 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556258498 Denitrification gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556259131 conversion of nitrate and nitrite to inorganic nitrogen]]> 2021-05-25 04:14:57 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556259131 Anammox gerlainelau https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556260505 conversion of (ammonia) to an inorganic nitrogen (N2)]]> 2021-05-25 04:15:40 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556260505 biological pumps 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556262550 - phytoplankton near the water surface make use of the light to make food
- phytoplankton respire to give out CO2
- marine creatures excrete waste, giving out carbon in the faeces 
- dead marine life decompose, carbon return into the surrounding waters

]]> 2021-05-25 04:16:41 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556262550 How Humans disrupt the P cycle 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556262719 - Artificial fertilisers created by humans contain llarge amounts of phosphorus 
- wash off into the ocean, thereby increasing the source of P 
- resulting in algal bloom due to abundance of P,
- results in fish death.
- This process is also known as eutrophication.]]> 2021-05-25 04:16:47 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556262719 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556272693 Source: 
River influx
Weathering (Silicate)
-> break down of rocks, soil, mineral through the contact with water


Sink: 
Ocean ]]> 2021-05-25 04:22:00 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556272693 Cycle of Minor Elements (danial) 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556274801 Mercury
Cadmium
Rhenium
Iron]]> 2021-05-25 04:23:00 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556274801 carbonate pump 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556282933 - CO2 dissolves in the ocean water forming carbonic acid (H2CO3)
- carbonic acid dissociates to from bicarbonate ions 
- bicarbonate ions react with dissolved calcium ion to form calcium carbonate ]]> 2021-05-25 04:26:57 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556282933 Iron 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556284047 - Constituent of enzymes 
- Nitrogen binding and nitrate reduction
- Many marine organisms have trace amount of iron in their body which is essential for their survival ]]> 2021-05-25 04:27:27 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556284047 Rhenium 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556288232 - Used by brown algae as a food source
- brown algae acts as a sink for rhenium
- black shale, copper sanstones act as rhenium source]]> 2021-05-25 04:29:28 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556288232 Process of Silicon Cycle 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556292695 Photic Zone: 
-Inorganic absorption 
-Upwelling 

-Dissolution: returns Si into usable form.
-Deposition 

Sediments: 
-Dissolved opal 
-Dissolved silica 
-Opaline skeletal debris 

]]> 2021-05-25 04:31:25 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556292695 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556293096 decrease in pH value due to more dissolved CO2 would cause carbonate levels to decrease]]> 2021-05-25 04:31:36 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556293096 Cadmium 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556295038 - Essential for marine diatoms in carbon concentration
- Sources of cadmium include artificial phosphate fertilizers, and weathered rocks
- sink of cadmium is marine diatoms]]> 2021-05-25 04:32:29 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556295038 Importance of carbon cycle 20022191_4 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556300473 - contributes to the ocean being the world's largest buffer system 
- forms part of the skeleton of the marine organisms 
- contributes to the hardness of the water]]> 2021-05-25 04:34:44 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556300473 Mercury 200159691 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556302790 - Can cause build up of deadly neurotoxins via the process of forming methylmercury. 
- Build up of mercury in fishes can be deadly to humans when consumed
- Sources of mercury include weathered rocks
- sinks of mercury include bio-accumulation from fishes]]> 2021-05-25 04:35:45 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556302790 Human Impact 200155351 https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556314614 Contamination of ocean: 
-Agriculture Runoff 
-Industrial Runoff

Effects:
-Reduce the amount of dissolved silica that reaches the ocean through freshwater. 
-Would affect food chain and system in the ocean 
(Diatomic growth is limited to dissolved silica)]]> 2021-05-25 04:41:01 UTC https://padlet.com/200155351/z1amz9n7ku61fzgj/wish/1556314614