13. Which of the following statements is correct? A. Population size of predators increases when their prey's population is low. B. Competition for resources is density-independent when food is plentiful. C. Disease is density-dependent because spreading occurs more easily when a population is closer together. D. A change in average temperature is a density-dependent factor because fewer organisms can acclimate to variations in temperature.
Q: Ecosystem
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- Name: Kathryn Laverty Date: Biology Introduced Species Directions: Write a short response for each of the following scenarios, describing the effect of the invasive species on ecosystem based on the information in the corresponding graphs. In your responses, please use complete sentences with proper grammar and spelling. 1. This graph comes from a study on the effects of European green crabs on the food web in Bodega Bay Harbor, California. 300 Response: 250 Wi 200 0 European Green Crabs Clams Crabs Year 2. The following graphs give information about the populations of Burmese pythons and mammals in the Florida Everglades. 400 SOME ANIMALS ON THE DECLINE IN EVERGLADES NATIONAL PARK 350 Crabs (no./trap) Clams (no./core) European Green Crabs (no./50m²)TejaTscharntke’s studies of the food web associated with Phragmites reeds revealedthat:a.only a single parasitoid species can persist exploiting a single speciesof herbivore.b.only a single herbivore species can persist attacking a single speciesof plant.c.predation by birds actually protects herbivores, because the birds feedon parasitoid-infested herbivore galls but not uninfested galls.d.within local food webs, all interactions tend to be of roughly the samestrength.e.recognizing variation in interaction strength can greatly simplify thedepiction of a food web.Match the invasive species with the appropriate descriptor Since its introduction into Guam, has decimated the local bird population [ Choose ] Kudzu Vine Asian Long Horned Beetle European Rabbit Fossa Monarch Butterfly Asian Carp Dutch Elm Disease Black Rat Burmese Python Asian Tiger Mosquito Fruit Bat Cane Toad Brown Tree Snake Lionfish Estimated to have killed nearly 75% of the species of trees it infected after it was introduced into North America [ Choose ] Kudzu Vine Asian Long Horned Beetle European Rabbit Fossa Monarch Butterfly Asian Carp Dutch Elm Disease Black Rat Burmese Python Asian Tiger Mosquito Fruit Bat…
- How is fire ants current range likely to change as a result of climate change? Things that you don't want to miss in your answer to get a high score: Define any terms such as range, niche. Do they prefer or are they limited by weather? What happens to their spread as weather changes The evidence for their limitation by cold weather is in the reading, and you should know that some species, particularly invasives, may spread as the climate warms.ENDANGERED ANIMAL is CA least tern bird 1-3 bases on the bird Reasons for Endangerment Explain the various factors that have led to this species’ current plight. Expand on these points individually, based on your species’ unique story. Domino Effects As we’ve learned, species are not islands unto themselves; they are integrated with many other organisms in trophic relationships, mutualisms, competition, etc. How is the absence of this species (or its lowered population size) likely to impact the other members of its habitat? (If findings specific to this point are available, please include them – otherwise, I’m asking you to speculate based on what you’ve learned about the biology of this organism.) Conservation Efforts Discuss past, current, and proposed efforts to conserve this species. Are these strategies effective? Are they realistic? What is the outlook for this organism?-2- SECTION A Answer ALL. questions in this section. Write your answers in the spuces provided in this booklet. 1. Students of an ecology elass conduct a field study in an area located on the boundary between a savannah and a forest. In addition to using various sampling methods to estimate species abundance, they observe the feeding patterns of the organinms (a) (1) Describe TWO sampling methods which the students could use to estimate the abundance of plant species in the area. (i1) Describe ONE method they could use to collect data on the mobile animals which inhabit the arca (b) The students record their data in a table similar to Table 1 TABLE 1: DATA ON ORGANISMS IN THE FIELD STUDY Estimated Numbers in 100 m Species Names Feeding Behaviour Savannah grass 1000 Grasshopper 50 Eats grass and leaves Caterpillar 25 Eats leaves Poui tree Hawk Eats woodpeckers and lizards Woodpecker Eats caterpillars 15 Eats caterpillars 33 Lizard
- C Clever | Portal e Edcite Q 15 | 2021 SCI_G8_12_MI X A Did you finish your interim? If no A edcite.com/apps/MOElemViewer?assignid%3Dnhaadmin_1611780315611&exid%3Dnhaassessn Use the information below to answer the question. Below is a model that traces the movement of energy and matter within an Amazon rainforest ecosystem. Ocelot Jaguar Carbon dioxide Golden lion tamarin Woolly monkey Long-horned grasshopper Dead-leaf moth Banana plant Bromeliad plant Fungi Oxygen Review / End Test Flag Options This assignment uses a Viewer designed by Edcite to meet the needs of students to pr the state assessment provider. As such, the Edcite viewer may differ 2013-2021 Edcite, InBase your answers to questions 7 and 8 on the graph belo the growth of a population of rabbits in a specific ecosyste Rabbit Population in a Specific Ecosystem Time 7. Which environmental factor could have caused the change ir A. increased predation by herbivores B. increased number of decomposers C. increased ayailability of food Population SizeENDANGERED ANIMAL is CA least tern bird 1-2 bases on the CA least tern bird Domino Effects As we’ve learned, species are not islands unto themselves; they are integrated with many other organisms in trophic relationships, mutualisms, competition, etc. How is the absence of this species (or its lowered population size) likely to impact the other members of its habitat? (If findings specific to this point are available, please include them – otherwise, I’m asking you to speculate based on what you’ve learned about the biology of this organism.) Conservation Efforts Discuss past, current, and proposed efforts to conserve this species. Are these strategies effective? Are they realistic? What is the outlook for this organism?
- Base your answer to the following question on the information and graph below and on your knowledge of biology. The graph contains information about an ecosystem. The graph below shows the carrying capacities of an ecosystem for three different species, 1, 2, and 3, that inhabit an area and the actual population sizes of these three different species in the area. Carrying Capacities of an Ecosystem Key O Carrying capacity O Actual population size 2 Species Identify which species population would have the least competition among its members. Support your answer using information from the graph. Number of Individuals in the SpeciesNeed help Can you think of a species of animal that is well adapted to survive in multiple land cover categories in the Central Valley.Name the species and explain?Article readings: Why some animals are more important to ecosystem than others. From the article, list down all the species being described as keystone species and their negative effect when removed from their ecosystem. Define the ‘Keystone species concept” and differentiate it from “morphological species concept”. How does a keystone species plays its role in having a trophic cascade scenario? 1 sentence only.