To produce about 3 tons of fish and fishery products annually, approximately how many hectares of mangrove must be protected/preserved from human activities? 3ha 2ha 1ha 5ha
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To produce about 3 tons of fish and fishery products annually, approximately how many hectares of mangrove must be protected/preserved from human activities?
- 3ha
- 2ha
- 1ha
- 5ha
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- productivity in above-ground biomass increment is greater in the estuarine stand than the island fringing stand productivity in litterfall is greater in the estuarine stand than the island fringing stand O productivity can be measured in part by measuring carbon in litterfall O productivity can be measured in part by measuring carbon in above-ground biomass increment subtracting above-ground biomass increment from litterfall provides the total productivity for a mangrove standTree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 2. One of the worst population catastrophes ever recorded occurred in Mesoamerica between 1519 and 1600 a. d., when around 22 million people native to the region died. Which period between 137 B.C. and 1992 had the most severe drought? How long did that drought last?Tree Rings and Droughts El Malpais National Monument, in west central New Mexico, has pockets of vegetation that have been surrounded by lava fields for about 3,000 years, so they have escaped wildfires, grazing animals, agricultural activity, and logging. Henri Grissino-Mayer generated a 2,129-year annual precipitation record using tree ring data from living and dead trees in this park (FIGURE 27.23). FIGURE 27.23 A 2.129-year annual precipitation record inferred from com pled tree ring data in El Malpais National Monument Now Mexico. Data ware averaged over 10-yeer intervals; graph correlates with other indicators of rainfall collected in all parts of North America. PDSI, Palmer Drought Severity Index: O, normal rainfall increasing numbers mean increasing excess of rainfall decreasing numbers mean increasing severity of drought A severe drought contributed to a series of catastrophic dust stem's that turned the rid western United States into a oust bow between 1933 and 1939. 1. Around 770 A. D., the Mayan civilization began to suffer a massive population loss, particularly in the southern lowlands of Mesoamerica. The El Malpais tree ring data show a drought during that time. Was it more or less severe than the dust bowl drought?
- Coral reefs and algal beds Tropical wet forest Wetlands Tropical dry forest Temperate evergreen forest Estuary Temperate deciduous forest Savanna Boreal forest Woodland and shrubland Cultivated land Temperate grassland Upwelling zones Ocean neritic zone Lake and stream Tundra Open ocean Desert and semidesert scrub Rock, sand, ice (a) NPP per unit area 0 Aquatic Terrestrial open ocean algal beds and reefs 15 20 500 1000 1500 2000 2500 0 Average net primary production (g/m²/yr) Percentage of Earth's net primary production Which aquatic habitat type in the figure makes available the most net biomass tissue per unit area available for consumers? tropical wet forest wetlands (b) Area covered, by ecosystem type E X 1 2 3 4 5 6 Percentage of Earth's surface area 65 (c) Total NPP = 0 5 10 25Examine the situation below. What function/services of the ecosystem is highly depicted in this situation? Justify. For 3-5 sentences only* One of the wetland ecosystem which is subjected to this degradation and considered as heavy polluted lake in the Philippines Laguna de Bay (LDB) (Framework for Philippine Plant Conservation Strategy and Action Plan retrieved 2018). LDB is the largest lake in the country and amongst the largest in Southeast Asia. It is a significant natural resource, being the catchment of an expansive and environmentally important watershed (Israel 2007). The shorelines of LDB serve as important locations for industrial, commercial and tourism activities in the country. It plays an ecological importance because it serves as spawning areas for fish and a natural protection from floodsThere are many theories that explain why there is higher species richness in the tropical rainforest than the temperate forests. Provide two biotic factors and two abiotic factors explanation.
- c) Deforestation and loss of biodiversity is a problem in many forests in different parts of the world. In no more than 400 words. discuss the effects and consequences due to deforestation and loss of biodiversity in rain forests.Describe the past and present situation of the mangrove forest by researching on its biota and provide relevant information and examples. How is the mangrove forest contributing to our GDP? Explain what is the current situation there due to the famous Rampal Power Station? Lastly, how can we preserve the largest mangrove forest in the world?Which of the following statements about the effects of clear-cutting on the Amazonian forest are true? Select all that apply. a) Soil moisture is likely to decline. b) Nutrient export is likely to decline. c) Species diversity is likely to decline. d) Atmospheric CO2 is likely to decline.
- Which trophic level is most affected by fires in Gorongosa? Explain. They gave me four options. First/producers, second/primary consumers, third/secondary consumers, or fourth/tertiary consumers.What are three (3) of the most serious negative consequences of massive tropical deforestation?The cutting and burning of tropical rain forests leads to which of the following? 1. Addition of CO2 to the atmosphere 2. Decreased removal of CO2 from the atmosphere 3. Reduced biodiversity 4. Climate change 1 only 2, 3, and 4 1, 2, and 3 1, 2, 3, and 4 1 and 2
