Q: How would you describe the slope ofa rank-abundance curve that vary with increasing species…
A: A rank abundance curve is also called Whittaker plot. This is a chart used by ecologists to display…
Q: Develop a sampling method/design to measure the sample size species richness of the invertebrates of…
A: The Slovin's formula would be used to calculate the sample size of the study. First, the researcher…
Q: give natural examples of density-independent Population regulation (e.g. aquatic weed in South…
A: In ecology, a density-independent factor, also known as a limiting factor, is any force that…
Q: Habitat
A: Introduction: Habitat is known as home for an organism. An organism gets everything he needs for…
Q: Which of the following is associated with the reproductive potential of a species? a. few offspring…
A: A species is a group of organisms that can interbreed to produce fertile and viable progeny.
Q: State two possible reasons why species may have a regular (uniform) distribution? Write 2 sentences…
A: Regular or uniform population is considered in a situation in which the organisms spread out…
Q: The process by which many new species arise in a relatively short period of time is known as________…
A: A species refers to a group of the individual organism which can interbreed and produce viable…
Q: Discuss the slope of a rank abundance curve that vary with increasing species evenness?
A: Rank Abundance Curve : The curve is a two-dimensional graph with the abundance rank on the X-axis…
Q: Does the species seem more characteristic of mountain areas or of valley areas? Why do you think…
A: As per the link provided in the question and the video by Prof. David Wake from the University of…
Q: Draw a species area curve for the data shown in Table 1. Don’t forget to label the axes and to…
A: An area species curve is a graphical representation of the relationship between the area of a…
Q: explain properly. How is a species’ population dynamics affected by the presence of another species…
A: A species ecological niche can be defined as the range of resources and the conditions allowing the…
Q: Of the following islands, where would you expect the equilibrium number of species to be the…
A: Equilibrium Theory of Island Biogeography (ETIB) The ETIB is associated with the theoretical…
Q: What limiting factors exist between regional species pools and local communities? Name all 3.
A: Introduction: There are 3 limiting factors which exist between regional species pool and local…
Q: How tradeoffs affect boundaries of niche? Explain in 10 sentences.
A: Trade off -- The term trade off is commonly used where a statistically significant negative…
Q: If human activities allow an invasive species to thrive, its speciation and population growth rates…
A: Speciation is a term which describes the process in which new species forms from the existing…
Q: Think of two possible reasons why species may have a regular (uniform) distribution. Write 2…
A: Individual interactions such as competitiveness and territoriality often result in uniform patterns…
Q: significance of species collection and why is it critical to understand how to collect and preserve…
A: Species collection is a way of collecting, preserving and organising a variety of biological species…
Q: Explain why niche overlap may lead to character displacement
A: Niche is the change in character of an organism to adapt to the ecological changes. All the…
Q: Formation of a new species occurs when two populations of an existing species first become_______…
A: The two main components of nature and abiotic and biotic components. The environment constitutes the…
Q: Give at least two keystone species in the Philippines with their scientific name , illaborate each…
A: Keystone species are the species which defines the entire ecosystem. Without the presence of the…
Q: Plot survivorship curves for all three species illustrated in Table 1 on a single graph. Label the…
A: For the above data, survival will be plotted on Y-axis and time (in units) will be plotted on…
Q: (log) Number of species 12 10 8 2 0 0 400 800 1200 Age of clade (My) Figure 2. The relationship…
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Q: Based on the data in the table below, determine whether mutualism will evolve in Species 1 and…
A: * Mutualism an interaction between two species in which both species will get benifits. *Examples…
Q: Which negative effect can habitat fragmentation have on a metapopulation? A. It can make patches…
A: Habitat fragmentation can be defined as the process during which a large expanse of habitat is…
Q: The basic metapopulation model also allows for the calculation of extinction rates and colonization…
A: Proportion of occupied patches : p Probability of extention : e Rate of extinction : (e x p)…
Q: The chart shows the average daily population growth rate and the competitive interaction strengths…
A: Lottery model is defined as a model for depicting the way organisms or species compete. Under this…
Q: Discuss what effective population size (Ne) is , and why is it of importance for conservation…
A: The effective populace size is the size of an optimal populace that would lose heterozygosity at a…
Q: Given the fluctuation of a pest population, provide an explanation (reason/ mechanism) based on…
A: Pests are organisms that degrade crop or plant quality or yield. Pest control employs a variety of…
Q: What is the significance of the slope of regression in a species – arearelationship?
A: Species refers to group of organisms that can interbreed among themselves to give rise to fertile…
Q: Life history adaptations of ___________ populations are characterized by an early age of first…
A: There are two kinds of population of organisms which possess different qualities of life history…
Q: True or False: a species that exhibits stasis lacks variation and is unchanging. Explain your answer
A: In the course of successive generations, evolution has changed the genetic properties of biological…
Q: Why is the proportion of occupied patches in a metapopulation at equilibrium determined by the rates…
A: Metapopulation alludes to the gathering of various populaces of an animal types that disseminated…
Q: How does the illegal fishing bombs may aid the problem of mass extinction? Cite specific example.
A: Fishing is one of the important sources of livelihood for people in developing nations and the…
Q: What characteristics are common to r-selected species? Choose All That Apply Rapid development and…
A: Depending on their evolutionary strategies as selected by natural selection for the animal and plant…
Q: Levins-style metapopulation model did not accurately reflect the dynamics of a stream fish…
A: In a landscape of linked patches, metapopulation models explain the colonisation and extinction of…
Q: Describe the Population distribution pattern of Samoa
A: Samoa is a tiny island country in the South Pacific Ocean. the island is composed of an archipelago…
Q: life history patterns and how different
A: Life history - A history of the changes through which an organism passes in its development, and…
Q: Metapopulations: model The figure below indicates overall colonization and extinction patterns based…
A: The individuals in a population are spatially distributed into 2 or more subpopulations in a habitat…
Q: The model of metapopulations postulates that some patches that are suitable for a species will not…
A: When several local are interconnected by migration and gene flow between the various patches, the…
Q: Why do r-selected species tends to be successful in a pioneer community? Why? (answer in minimum of…
A: Depending on the nature of the life history and patterns of growth, reproduction the species are…
Q: Using the community assembly theory, provide a framework or explanation on: How do some exotic…
A: Community Assembly theory states that the composition and relative abundance of species within a…
Q: Study these two figures? Which graph represents Semibalanus? (d) When competition is asymmetric and…
A: The various organisms in an ecosystem occupy their own niche or speciality (feeding habits,…
Q: Draw a graph showing the growth of the species’ populations with time: put all species’ populations…
A: Time will be plotted in X-axis and Change in number of individuals will be plotted in Y- axis as per…
Q: Create a two-part figure showing the effects of forest fragmentation on the community of small…
A: Figure A should depict the interaction network of a large forest patch with higher species…
Q: What tupe of succession will occur over time in this type of case ?
A: The mechanism by which the organization of a biological society changes over time is known as…
Q: Calculate for the Diversity Indices of the different communities given below using PAST. Relative…
A: The relative abundance (Pi) is calculated by dividing the number of species of one group to the…
Q: Define the following: metapopulation, genetic drift, demographic bottleneck.
A: Metapopulation Metapopulation is known as "Population of population". It is a group of same…
Explain the concept of metapopulations. Discuss the role of source and sink populations in contributing to the metapopulation structure.
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- List the possible reasons why two individuals of a certain speciesmight differ in V•O2max.For the metapopulation of Daphnia in Scandinavian freshwater pools, which situation would be most likely to result in maintenance of the metapopulation, rather than its extinction? A) Immigrants increase the genetic diversity of pools, slightly increasing r. B) Years of drought decrease the average size of all pools. C) Small pools “wink off” and are not repopulated by dispersal from larger pools. D) The pools are mostly small, and there is no dispersal among them. E) Dispersal among pools is infrequent, and many pools reach zero density.What are consequences of overpopulation?
- What are pioneer species? What is the role of pioneer species?Explain why parapatric speciation is more likely to occur in sedentary organismsThe model of metapopulations postulates that some patches that are suitable for a species will not be occupied by the species. Does that mean that the patch is not really suitable after all? Does it mean that it is unimportant for the conservation of the species and can be used for industrial development? Explain.
- Habitat fragmentation can lead to: a)The disappearance of the matrix due to decreased habitat heterogeneity b) Changes in patch use by animals, with smaller patches leading increased size of home range or movement for many animals c) Variation in microenvironment near the edge of the patch with negative consequences for diversityWhich of these following scenarios is caused by the Allee effect? Corals rely on external fertilization when gametes (sperm and eggs) are released into the sea in large quantities and have to meet at random chance. When coral densities drop due to coral bleaching and die back, external fertilization becomes inefficient, few zygotes form, and coral populations further decline or go extinct. After a big disturbance in forests, such as fire, many seeds germinate and seedlings compete for space, light and resources. K-selected species produce fewer, but larger seeds that are initially outnumbered by the numerous sEeds and resulting seedlings of r-selected species. The initial advantage of r-selected species of Occupying more locations and therefore by random chance also better locations, is later overcome by the K-selected species higher competitive ability. Therefore, for the first years to decades, r-selected species dominate areas that experienced severe disturbances, while in mature…Ecologists use a rank-abundance curve to display relative species abundance, which is a component of biodiversity. It can also be used to demonstrate species richness and evenness. Figure 1 shows the rank- abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Pollution of streams, on the other hand, reduces the diversity of Trichoptera and several other groups of stream insects, reducing both species richness and species diversity. Interpret why those happened. These rank-abundance curves show that the mountain stream caddisfly community has higher species richness and greater species evenness. 0.1 - Mountain stream 0.01 Greater richness and species evenness 0,001 Coastal ponds 0.0001 20 40 60 80 Abundance rank Figure 1: Rank-abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Proportional abundance
- Why is the proportion of occupied patches in a metapopulation at equilibrium determined by the rates of patch colonization and extinction?Diversification of species can be driven by factors such as physiological or morphological features of the species. These types of factors are called 1)heterogenous 2) extrinsic 3) endogenousProvide a detailed summary of spatial distribution of lumbricina terrestris. Also include the distribution of the species/individuals at various scales, within population and WHY this spatial pattern may have developed or evolved?