Here's how Posphorus Circulates through its cycle.pptx.pdf
- 1. Here's how Phosphorus circulates through its cycle Phosphorus Cycle Terrestrial & Aquatic Environments
- 2. Phosphorus (P) Phosphorus is needed to make: DNA Nucleotides (Phosphate group) ATP (Cellular Energy) Phospholipids - outer boundary of cells
- 3. The Phosphorus Cycle The phosphorus cycle is a biogeochemical process describing how phosphorus (P) moves through the biosphere, the hydrosphere, and the lithosphere . The phosphorus cycle does not include the atmosphere because very little phosphorus circulates through the atmosphere as a gas.
- 4. The Cycle ● Weathering of Rocks The weathering of rocks containing phosphate minerals is the main way that phosphorus enters the cycle. Phosphate ions are released by this mechanism into the water and soil. ● Absorption by Plants and Animals Phosphorus can be absorbed by plants, fungus, and microbes and used by them for growth once they are in the soil. A portion of it also finds its way into freshwater bodies of water, such as the ocean, where it is drunk by animals and absorbed by plants along with phosphorus. The phosphorus enters the animals when they eat the vegetation. ● Decomposition Decomposers (such as bacteria and fungus) break down the organic matter left behind by dead plants and animals, returning phosphorus to the soil in the form of inorganic phosphate. ● Sedimentation When phosphorus-containing compounds from the bodies or wastes of marine organisms sink to the floor of the ocean, they form new sedimentary layers. Over long periods of time, phosphorus-containing sedimentary rock may be moved from the ocean to the land by a geological process called uplift. ● Uplift and Exposure Geological processes such as tectonic uplift can expose these phosphate-rich sediments at the Earth's surface, where they can again be weathered, continuing the cycle. The phosphorus cycle is a biogeochemical process describing how phosphorus (P) moves through the biosphere, the hydrosphere, and the lithosphere . The phosphorus cycle does not include the atmosphere because very little phosphorus circulates through the atmosphere as a gas.
- 5. The Phosphorus Cycle Weathering of Rocks The weathering of rocks containing phosphate minerals is the main way that phosphorus enters the cycle. Phosphate ions are released by this mechanism into the water and soil.
- 6. The Phosphorus Cycle Absorption by Plants and Animals Phosphorus can be absorbed by plants, fungus, and microbes and used by them for growth once they are in the soil. A portion of it also finds its way into freshwater bodies of water, such as the ocean, where it is drunk by animals and absorbed by plants along with phosphorus. The phosphorus enters the animals when they eat the vegetation.
- 7. The Phosphorus Cycle Decomposition Decomposers (such as bacteria and fungus) break down the organic matter left behind by dead plants and animals, returning phosphorus to the soil in the form of inorganic phosphate.
- 8. The Phosphorus Cycle Sedimentation When phosphorus-containing compounds from the bodies or wastes of marine organisms sink to the floor of the ocean, they form new sedimentary layers. Over long periods of time, phosphorus-containing sedimentary rock may be moved from the ocean to the land by a geological process called uplift.
- 9. The Phosphorus Cycle Uplift and Exposure Geological processes such as tectonic uplift can expose these phosphate-rich sediments at the Earth's surface, where they can again be weathered, continuing the cycle.
- 10. Occurrence of Algal bloom in Laguna de bay Source: Laguna Lake Development Authority Source: Laguna Lake Development Authority
- 11. Source: Laguna Lake Development Authority https://view.officeapps.live.com/op/view.aspx?src=https%3A%2F%2Fpsa.gov.ph%2Fsystem%2Ff iles%2Fenrad%2FTable%25201.31%2520Concentration%2520Level%2520of%2520Phosphate% 2520in%2520Laguna%2520de%2520Bay%2520and%2520its%2520Major%2520Tributaries%25 2C%25202012-2022.xlsx&wdOrigin=BROWSELINK Concentration Level of Phosphate in Laguna de Bay and its Major Tributaries by Station
- 12. Mass Coral Bleaching in Talim Bay, Lian, Batangas Source: DLSU Br. Alfred Shields FSC Ocean Research Center- FB Page https://www.facebook.com/dlsushore
- 13. Actions to reduce or eliminate ✔Catchment management ✔Restoratio n ✔Control MITIGATION STRATEGIES 3 COMPONENTS TO REHABILITATION
- 15. (1) Strategy: Restoration DEEP AERATION
- 16. DEEP AERATION - Mechanical method - O2 injection, stirring, etc.
- 17. DEEP AERATION - Multiple stations will be chosen to be subjected to aeration (LLDA, 2023). Two purposes: ❖ to improve DO concentration without changing the water layer, thus stimulating transformation of the anaerobic environment into an aerobic environment; and ❖ to enhance the growth environment of benthonic organisms and increase the food supply.
- 18. (2) Strategy: Control RIPARIAN BUFFERS Deliver numerous benefits: ❖ Filtering nutrients, pesticides, and animal waste ❖ Stabilizing eroding banks ❖ Filtering sediment from runoff ❖ Provide shelter, shade, and food for fish and other aquatic organisms, and etc.
- 19. RIPARIAN BUFFERS - Buffer zones (Mangrove areas) - Needs continuous long-term management to ensure benefits
- 20. Possible Effective Strategy Biological Methods ❖ uses specific microorganisms, aquatic plants, and aquatic animals to degrade, absorb, and transform lake nutrients.
- 21. BIOLOGICAL METHODS ● Bioremediation ● Biomanipulation technologies Ecological Engineering
- 23. References: ● Kang, S., Luo, P., Lyu, J., Wang, P., Zhang, Y., Zhao, S., and Zhou, M. 2020. Control and Remediation Methods for Eutrophic Lakes in the past 30 years. Water Sci Technol. 81 (6): 1099-1113. ● Broadmeadow, S. and Nisbet, T.R. 2004. The Effects of Riparian Forest Management Freshwater Environment: A Literature Review of Best Management Practice. Hydrol. Earth Syst. Sci. 8: 286-305. ● Rinkevich, B. 2021. Ecological Engineering Approaches in Coral Reef Restoration. ICES Journal of Marine Science. 8 (1): 410-420. ● Escober, E. and Espino, M. 2023. A New Trophic State Index for Assessing Eutrophication of Laguna de Bay, Philippines. Environmental Advances. 13: 2666-7657.
- 24. Thanks!