PPT-Multiple-species interactions

Left Image from Wikimedia Commons of one of the earliest known depictions of a food web by Victor Summerhayes amp Charles Elton 1923 for Bear Island Norway Right Provenance of A simplified food web for Northwest Atlantic unknown . Photo . of hawk moth potentially pollinating . Dianthus. from Wikimedia Commons . Facilitation . – in other words, “+” means benefits outweigh costs. Commensalism. . =. +/0. Mutualism. . =. Cornell Notes and Q’s:. Take 2 pages of Cornell Notes based on the information you learn about in this presentation. . Answer the Questions you see included on the slides. (Q:). These notes will be included in a notebook check. 20 . Predation. The capturing of prey as a . means of maintaining life. One organism benefits . One organism is killed. Competition. Competition. – A rivalry between organisms for the same resources; The fitness of one of the organisms is lowered by the presence of another.. Consequences of Species. Interactions. 44. Chapter 44 Opener. Chapter 44 Ecological and Evolutionary Consequences. of Species Interactions. Key Concepts. 44.1 Interactions between Species May Be Positive, Negative, or Neutral. Photo . of hawk moth potentially pollinating . Dianthus. from Wikimedia Commons . Facilitation . – in other words, “+” means benefits outweigh costs. Commensalism. . =. +/0. Mutualism. . =. Organism ecology . = . relationship between organism and physical environment. . Population ecology. . =. investigates the dynamics of population change. Community ecology. . =. focuses on patterns of species diversity and interactions. Types of species interactions. Positive . Negative. N. eutral. Positive species interactions. Mutualism. Both species benefit by interacting with each other. Ant-Acacia mutualism. Mutualism. http://. Chapter . 5. Key Concepts. Species . interactions. Responses to changes in environmental . conditions. Factors determining number of species in a community. Species Diversity and Ecological Stability. and Population Control. Chapter 5 (Miller and . Spoolman. , 2010). Figure 5.1. An endangered southern sea otter in Monterey Bay, California (USA), uses a stone to crack the shell of a clam (insert). It lives in a giant kelp bed near San Clemente Island, California (background). Scientific studies indicate that the otters act as a keystone species in a kelp forest system by helping to control the populations of sea urchins and other kelp-eating species.. Presented by Neil Morley. University of California, Los Angeles. US-EU DCLL Workshop. November 14-15, 2014. Slides from my colleagues S. . Smolentsev. . and M. . Abdou. . gratefully acknowledged. Next 10 Years. Case presentation . Department of Microbiology. BY: . Dr. . Izna. Case. A . 35 years old Female . patient (agricultural worker),came to . Dermatology. department with chief complaints of . Painful, raised lesions over the axilla, upper chest, B/L shoulders and over the back since . avoiding direct competition.. encouraging mutualistic interactions.. enabling prey to hide from predators.. creating new resources.. allowing abiotic factors, such as climate or nutrient availability, to influence the community.. dynamics – Andy Dobson. Many thanks to Peter . Hudson. Mercedes . Pascual. and Stefano . Allesina. Anieke. . van . Leeuwen. & Claire . Standley. Kevin Lafferty, Jennifer Dunne, and . Giulio. Justin Debrow, Alexandra Hughes, . Changqing. Chen*. Dept of Chemistry & Physics, Salem State University. Outline. Introduction. Alzheimer’s Disease (AD) is a progressive neurodegenerative disorder that affects approximately 5.7 million US citizens..