Essays about: "predator-prey"

Showing result 16 - 20 of 28 essays containing the word predator-prey.

  1. 16. Interspecies animal "friendships"

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Nadil Silva; [2017]
    Keywords : species; stress; animal bonds; play; behaviour;

    Abstract : Even though conspecific close relationships are well documented, scientific studies done on interspecies close relationships are scarce. There is no agreement of using the word friendships without inverted commas when describing close relationships of animals. READ MORE

  3. 17. Dinosaur Warfare: Ankylosaur and Theropod Coevolution

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Christopher Freer; [2017]
    Keywords : ankylosaur; theropod; coevolution; phenotypic mismatch; red queen; tyrannosaurid; ankylosaurier; theropoder; samevolution; phenotypic mismatch; röd drottning; tyrannosaurid;

    Abstract : Ankylosauria is a clade of armoured dinosaurs that, throughout the Mesozoic, demonstrates divergent evolution of defensive traits, between the robust spikes and osteoderms of nodosaurids to the ankylosaurid tail clubs and lightweight armour. One of the longer-standing hypotheses, which is supported by histological data, stipulates that armament was a direct result of a predator-prey relationship between theropods and ankylosaurians. READ MORE

  4. 18. The population structure of Late Pliocene and Early Pleistocene Neptunea angulata, Gastropoda and an investigation into bias in the fossil record and museum collections.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Thomas Owen; [2016]
    Keywords : Bias; age distributions; taphonomy; population structure.; Partiskhet; åldersfördelning; tafonomi; populationsstrukturer.;

    Abstract : The fossil population structure of the gastropod Neptunea angulata from the late Pliocene and Early Pleistocene was investigated in this project in order to contribute to a wider study on the influence of predation on populations and the evolutionary history of organisms. Over time, predator-prey relationships can drive evolution in a way similar to the Red Queen Hypothesis. READ MORE

  5. 19. Evolution av färgteckningen hos zebror : varför har zebrorna fått sina ränder och varför har olika zebraarter olika färgteckning

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Sofia Karlsson Warring; [2016]
    Keywords : zebror; Equus; ränder; mönster; kamouflage; grevyzebra; bergszebra; stäppzebra; zebra; pattern; stripes; camouflage; Equus grevyi; Equus zebra; Equus quagga;

    Abstract : Detta arbete är en litteraturstudie med syfte att gå igenom teorier bakom zebrans ränder och de eventuella anledningarna bakom arternas varierande färgteckning. Det finns många teorier som sägs vara anledningen till zebrans ränder och jag har valt ut de mest studerade teorier och de jag själv tycker är rimligast. READ MORE

  6. 20. Analysis and Implementation of Adaptive Explicit Two-Step Methods

    University essay from Lunds universitet/Matematik LTH

    Author : Kjartan Kari Gardarsson Myrdal; [2015]
    Keywords : numerical methods; two-step; variable; multistep methods; ODE; adaptive; differential equations; parametric; explicit; Mathematics and Statistics;

    Abstract : Recently a new way of constructing variable step-size multistep methods has been proposed, that parametrizes the entire domain of multistep methods. In the presented work the case of explicit two-step methods is looked at, analyzed and related to the already known theory of multistep methods. READ MORE