This figure has three graphs that have important implications for understanding how carbon flow andelements cycle through ecosystems through decomposition. The figures show data on thedecomposition rates in a tropical forest. Please select all of the statements that are reasonableof at least one of the figures.interpretationsDaily rate of mass loss (k)from 0 to 50 days(b)0.90.80.70.60.50.40.30.20.10.00Leaf mass remaining (percent)(a)100%8046040200050100150Days of decomposition12168Leaf solubility (mg C/g dry leaf) (c)Daily rate of mass loss (k)from 51 to 230 days0.0090.0060.0030.000200Trumpet treeInga treeKapok treeBrazilian firetree25023Ratio of leaf lignin:leaf nitrogen4Relyea, Ecology, 9e, Ⓒ2021 W. H. Freeman and CompanyO Leaves that release more soluble carbon pounds decompose much faster than those that release lessLeaves that are rich in nitrogen relative to lignin decompose much faster increasing the rate of the nitrogencycleO Leaves that are rich in lignin relative to nitrogen are tougher and more carbon rich and decompose muchfaster increasing the rate of the nitrogen cycleO Kapok tree leaves decompose much faster than leaves of the trumpetKapok tree leaves decompose much more slowly than leaves of the trumpet tree

Here the daily rate of mass loss refers to decomposition of the leaves. In the first graph different…

Answered: nts cycle through ecosystems through…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter46: Ecosystems

Section: Chapter Questions

Problem 1VCQ: Figure 46.8 Why do you think the value for gross productivity of the primary producers is the same...

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estimate the total primary production in the oceans (in million metric tons carbon) using the following information - 92% of oceans are open ocen with an average productivity of 125 gC/m2/yr - 8% of the oceans are coastal, with an average productivity of 2,000 gC/m2/yr - remember a metric ton is 1,000 Kg
A family travels from New York City to Costa Rica three times a year for a vacation. The family would like to purchase some forested land in the Catskills, keeping the trees intact as an offset to the carbon dioxide they produce travelling each year. How much forest must they purchase? Use the following assumptions to measure the carbon offset provided by this intact forest. • The biomass of the forest increases at an annual rate of 2.8 × 105 kg/ha. • The forest biomass is 45% carbon by mass. • There are four people in the family. • 0.2 kg of CO2 is produced each mile per person on the flight. • The round-trip distance is 4,500 miles. • There are 2.47 acres in one hectare. 1. Calculate the mass of carbon, in kilograms, that is accumulated and stored in 1.0 ha of this forest in one year. 2. Calculate the mass of carbon, in kilograms, that is emitted by the family as a result of their round-trip flights to Costa Rica each year. 3. Calculate the number of acres of forest that must be…
A family travels from New York City to Costa Rica three times a year for a vacation. The family would like to purchase some forested land in the Catskills, keeping the trees intact as an offset to the carbon dioxide they produce travelling each year. How much forest must they purchase? Use the following assumptions to measure the carbon offset provided by this intact forest. The biomass of the forest increases at an annual rate of 2.8 × 105 kg/ha. The forest biomass is 45% carbon by mass. There are four people in the family. 2 kg of CO2 is produced each mile per person on the flight. The round-trip distance is 4,500 miles. There are 2.47 acres in one hectare. Calculate the mass of carbon, in kilograms, that is accumulated and stored in 1.0 ha of this forest in one year. Show your work. Calculate the mass of carbon, in kilograms, that is emitted by the family as a result of their round-trip flights to Costa Rica each year. Show your work. Calculate the number of acres of forest…
support or refute the following statements based on what you learned about energy flow, biogeochemical cycling, decomposition, trophic levels, and keystone species. You may add a diagram or illustration to support your answer. Planting mangroves is better than putting dolomite sand on the coast of the polluted Manila Bay.
Scientists at the Global Footprint Network calculate the energycomponent of our ecological footprint by estimating the amountof ecologically productive land and sea required to absorb thecarbon released from fossil fuel combustion. This translates into4.9 ha of the average American’s 7.2-ha ecological footprint.Another way to think about our footprint, however, is to estimatehow much land would be needed to grow biomass with anenergy content equal to that of the fossil fuel we burn.Assume that you are an average American who burns about6.3 metric tons of oil-equivalent in fossil fuels each year andthat average terrestrial net primary productivity (p. 32) can beexpressedas 0.0037 metric tons/ha/year. Calculate how manyhectares of land it would take to supply our fuel use by presentdayphotosynthetic production. Compare the energy component of your ecological footprintcalculated in this way with the 4.9 ha calculated usingthe method of the Global Footprint Network. Explainwhy results from…
What is the range of values for percentage of emissions from transport of food to retailers (delivery)? Weber and Mathews found that 83% of food’s total emissions came from its production process on the farm or feedlot. What do these numbers tell you about how you might best reduce your own footprint with regard to food?
P Parchment Exchange - Leader arn.edgenuity.com/player/ ce - SC5181 A 21 Unmark this X + gestion 01 M DELL TEXTO A ก A mature oak and hickory forest ecosystem experienced an intense forest fire that burned the existing trees the ground. Despite the intensity of the fire, some soils remained. Total biomass, species richness, and net productivity were reduced significantly after the initial disturbance. There have not been any more fires since. Twenty years after the fire, there are medium-sized trees and bushes growing, as well as ferns and flowering plants. The forest is in the middle, or intermediate, stage of succession. How has the current stage of succession affected total biomass, species richness, and net productivity of the ecosystem? O Total biomass remained the same, species richness decreased, net productivity remained the same O Total biomass increased, species richness increased, net productivity decreased O Total biomass increased, species richness increased, net…
The following graph shows the values of radiation and photosynthesis of quelite plants (Amaranthus hybridus) measured in four days during a month. Answer the relationship between both variables and what implications they have for the adaptation of this species to radiation. Photosynthesis in (umol CO2 m-2 s-1) 100 80 40 20 O lh 1 2 3 4 Date 2100 1600 1100 600 100 -400 Radiation in (umol m-2 S-1) Photosynthesis Radiation Active photosynthetic radiation compared to Photosynthesis of Quelite in 4 different dates: 1=June 8, 2=June 25, 3=June 26 and 4-June 27
refrigeration and air conditioning decomposition of waste in landfill (d) (i) Some of the human sources of greenhouse gases in the atmosphere are shown below. crop farming using chemical fertilisers factories burning fossil fuels car engines running on petrol livestock farmers keeping cattle decomposition of waste in landfill exhaust emissions from old trucks and buses use of aerosol sprays Fill in the table to show sources for the different greenhouse gases. Use each source once only. greenhouse gas human source co, methane CFCS N,0 (ii) Another human source of greenhouse gas emissions c.. be described as follows, • results in the release of CO2 · associated with change from natural to urban or agricultural land use. Suggest the name of this source of greenhouse gas emissions. source (e) The table gives the amount of carbon emitted into the atmosphere in carbon dioxide from 1860 to 2000. These are cumulative totals (new amounts released each year have been added to those already…
support or refute the following statements based on what you learned about energy flow, biogeochemical cycling, decomposition, trophic levels, and keystone species. You may add a diagram or illustration to support your answer. Shark fin soup can cause the collapse of coral reef ecosystem
Which one of the following sentences is NOT true? Select one: Compared with other land-based food production systems, fisheries and aquaculture have a relatively small overall carbon footprint. Global fish production from capture and culture operations contributed up to 1.5% to the world’s CO2 emissions. CO2 emissions by marine and inland fishing vessels were about 0.5% of the total global emissions. Being a minor contributor in global terms, fisheries and aquaculture have no opportunities to mitigate emissions of greenhouse gases.
Figure 46.8 Why do you think the value for gross productivity of the primary producers is the same as the value for totall heat and respiration (20,810 kcal/ m2/yr)?

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