Wildlife Predation
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The Music of Place, You Will Find the Addresses of Internet Sites You Can Visit to Hear Audio Clips Related to the Stories
THE MU T Kokopelli, the Flute Player S Sounds of the Colorado Plateau . S IC OF PLACE Where this symbol appears in the OF THE WE THE OF pages of Sojourns—The Music of S ☉ Place, you will find the addresses of Internet sites you can visit to hear audio clips related to the stories. himsical appropriations have a long history in Western , AND CANYON , society. New England is populated with commercial S We’ve also teamed up with KNAU renderings of Minutemen and stiff-lipped Pilgrims, the W Arizona Public Radio at the South has its Jonny Rebs, and here in the American Southwest we see University of Northern Arizona to howling coyotes steel-cast as yard ornaments and the hunchbacked PLATEAU , Kokopelli making appearances everywhere from hand towels to S bring you a sampling of music and earrings and coffee cups. Just as the clever canine hunter is tamed by sounds collected in conjunction with the addition of a neck bandana, the fierce flute-playing warrior is often the contents of this issue. To listen, depicted with a cock-eyed grin and sleepy eyes. go to the KNAU Web site at http:// www.knau.org/Sojourns. Thanks to The original Kokopelli, however, is an extremely powerful and ancient THE PEAK AMONG S John Stark, general manager, and supernatural driven by lust and the capacious winds of seasonal the KNAU staff for collaborating change. He is fecundity incarnate and a capricious trickster in his AUDIO LINKS INSIDE with Sojourns to offer this additional games of seducing and enticing the unwary. -
Predators As Agents of Selection and Diversification
diversity Review Predators as Agents of Selection and Diversification Jerald B. Johnson * and Mark C. Belk Evolutionary Ecology Laboratories, Department of Biology, Brigham Young University, Provo, UT 84602, USA; [email protected] * Correspondence: [email protected]; Tel.: +1-801-422-4502 Received: 6 October 2020; Accepted: 29 October 2020; Published: 31 October 2020 Abstract: Predation is ubiquitous in nature and can be an important component of both ecological and evolutionary interactions. One of the most striking features of predators is how often they cause evolutionary diversification in natural systems. Here, we review several ways that this can occur, exploring empirical evidence and suggesting promising areas for future work. We also introduce several papers recently accepted in Diversity that demonstrate just how important and varied predation can be as an agent of natural selection. We conclude that there is still much to be done in this field, especially in areas where multiple predator species prey upon common prey, in certain taxonomic groups where we still know very little, and in an overall effort to actually quantify mortality rates and the strength of natural selection in the wild. Keywords: adaptation; mortality rates; natural selection; predation; prey 1. Introduction In the history of life, a key evolutionary innovation was the ability of some organisms to acquire energy and nutrients by killing and consuming other organisms [1–3]. This phenomenon of predation has evolved independently, multiple times across all known major lineages of life, both extinct and extant [1,2,4]. Quite simply, predators are ubiquitous agents of natural selection. Not surprisingly, prey species have evolved a variety of traits to avoid predation, including traits to avoid detection [4–6], to escape from predators [4,7], to withstand harm from attack [4], to deter predators [4,8], and to confuse or deceive predators [4,8]. -
Effects of Human Disturbance on Terrestrial Apex Predators
diversity Review Effects of Human Disturbance on Terrestrial Apex Predators Andrés Ordiz 1,2,* , Malin Aronsson 1,3, Jens Persson 1 , Ole-Gunnar Støen 4, Jon E. Swenson 2 and Jonas Kindberg 4,5 1 Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, SE-730 91 Riddarhyttan, Sweden; [email protected] (M.A.); [email protected] (J.P.) 2 Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Postbox 5003, NO-1432 Ås, Norway; [email protected] 3 Department of Zoology, Stockholm University, SE-10691 Stockholm, Sweden 4 Norwegian Institute for Nature Research, NO-7485 Trondheim, Norway; [email protected] (O.-G.S.); [email protected] (J.K.) 5 Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden * Correspondence: [email protected] Abstract: The effects of human disturbance spread over virtually all ecosystems and ecological communities on Earth. In this review, we focus on the effects of human disturbance on terrestrial apex predators. We summarize their ecological role in nature and how they respond to different sources of human disturbance. Apex predators control their prey and smaller predators numerically and via behavioral changes to avoid predation risk, which in turn can affect lower trophic levels. Crucially, reducing population numbers and triggering behavioral responses are also the effects that human disturbance causes to apex predators, which may in turn influence their ecological role. Some populations continue to be at the brink of extinction, but others are partially recovering former ranges, via natural recolonization and through reintroductions. -
The Retriever, Issue 1, Volume 39
18 Features August 31, 2004 THE RETRIEVER Alien vs. Predator: as usual, humans screwed it up Courtesy of 20th Century Fox DOUGLAS MILLER After some groundbreaking discoveries on Retriever Weekly Editorial Staff the part of the humans, three Predators show up and it is revealed that the temple functions as prov- Many of the staple genre franchises that chil- ing ground for young Predator warriors. As the dren of the 1980’s grew up with like Nightmare on first alien warriors are born, chaos ensues – with Elm street or Halloween are now over twenty years Weyland’s team stuck right in the middle. Of old and are beginning to loose appeal, both with course, lots of people and monsters die. their original audience and the next generation of Observant fans will notice that Anderson’s filmgoers. One technique Hollywood has been story is very similar his own Resident Evil, but it exploiting recently to breath life into dying fran- works much better here. His premise is actually chises is to combine the keystone character from sort of interesting – especially ideas like Predator one’s with another’s – usually ending up with a involvement in our own development. Anderson “versus” film. Freddy vs. Jason was the first, and tries to allow his story to unfold and build in the now we have Alien vs. Predator, which certainly style of Alien, withholding the monsters almost will not be the last. Already, the studios have toyed altogether until the second half of the film. This around with making Superman vs. Batman, does not exactly work. -
Nhbs Monthly Catalogue New and Forthcoming Titles Issue: 2013/08 August 2013 [email protected] +44 (0)1803 865913
nhbs monthly catalogue new and forthcoming titles Issue: 2013/08 August 2013 www.nhbs.com [email protected] +44 (0)1803 865913 Welcome to the August 2013 edition of the NHBS Monthly Catalogue. This monthly Zoology: update contains all of the wildlife, science and environment titles added to nhbs.com in Mammals the last month. Birds Editor's Picks - New in Stock this Month Reptiles & Amphibians Fishes ● The Warbler Guide Invertebrates ● The Avian Migrant Palaeontology ● The Biology of Peatlands Marine & Freshwater Biology ● Birds of the Indian Ocean Islands General Natural History ● A Field Key to Lichens on Trees Regional & Travel ● Frogs of the United States and Canada (2-Volume Set) ● Mammals of China (Pocket Edition) Botany & Plant Science ● Marine Plants of the Canary Islands Animal & General Biology ● Reunion Island Orchids / Orchidees de La Reunion Evolutionary Biology ● Penguins: Natural History and Conservation Ecology ● Reptiles and Amphibians of the Pacific Islands: A Comprehensive Guide Habitats & Ecosystems ● River Conservation and Management Conservation & Biodiversity ● The Symbol: Wall Lizards of Ibiza and Formentera Find out more about services for libraries and organisations: NHBS Environmental Science LibraryPro Physical Sciences Sustainable Development Best wishes, -The NHBS Team Data Analysis Reference View this Monthly Catalogue as a web page or save/print it as a .pdf document. Mammals A Pictorial Guide to Non-human Primates of India 173 pages | colour illustrations, colour Sangita Mitra maps | This is a colorful pictorial guide for Indian Primates, which concisely describes all the 15 species Paperback | 01/2011 | 9788192061610 occurring in India including their distribution, habit, habitat, morphology, sexual dimorphism, | #207408A | £26.99 Add to basket natural diet, endemicity, interspecific .. -
A Review of Planktivorous Fishes: Their Evolution, Feeding Behaviours, Selectivities, and Impacts
Hydrobiologia 146: 97-167 (1987) 97 0 Dr W. Junk Publishers, Dordrecht - Printed in the Netherlands A review of planktivorous fishes: Their evolution, feeding behaviours, selectivities, and impacts I Xavier Lazzaro ORSTOM (Institut Français de Recherche Scientifique pour le Développement eri Coopération), 213, rue Lu Fayette, 75480 Paris Cedex IO, France Present address: Laboratorio de Limrzologia, Centro de Recursos Hidricob e Ecologia Aplicada, Departamento de Hidraulica e Sarzeamento, Universidade de São Paulo, AV,DI: Carlos Botelho, 1465, São Carlos, Sï? 13560, Brazil t’ Mail address: CI? 337, São Carlos, SI? 13560, Brazil Keywords: planktivorous fish, feeding behaviours, feeding selectivities, electivity indices, fish-plankton interactions, predator-prey models Mots clés: poissons planctophages, comportements alimentaires, sélectivités alimentaires, indices d’électivité, interactions poissons-pltpcton, modèles prédateurs-proies I Résumé La vision classique des limnologistes fut de considérer les interactions cntre les composants des écosystè- mes lacustres comme un flux d’influence unidirectionnel des sels nutritifs vers le phytoplancton, le zoo- plancton, et finalement les poissons, par l’intermédiaire de processus de contrôle successivement physiqucs, chimiques, puis biologiques (StraSkraba, 1967). L‘effet exercé par les poissons plaiictophages sur les commu- nautés zoo- et phytoplanctoniques ne fut reconnu qu’à partir des travaux de HrbáEek et al. (1961), HrbAEek (1962), Brooks & Dodson (1965), et StraSkraba (1965). Ces auteurs montrèrent (1) que dans les étangs et lacs en présence de poissons planctophages prédateurs visuels. les conimuiiautés‘zooplanctoniques étaient com- posées d’espèces de plus petites tailles que celles présentes dans les milieux dépourvus de planctophages et, (2) que les communautés zooplanctoniques résultantes, composées d’espèces de petites tailles, influençaient les communautés phytoplanctoniques. -
Can More K-Selected Species Be Better Invaders?
Diversity and Distributions, (Diversity Distrib.) (2007) 13, 535–543 Blackwell Publishing Ltd BIODIVERSITY Can more K-selected species be better RESEARCH invaders? A case study of fruit flies in La Réunion Pierre-François Duyck1*, Patrice David2 and Serge Quilici1 1UMR 53 Ӷ Peuplements Végétaux et ABSTRACT Bio-agresseurs en Milieu Tropical ӷ CIRAD Invasive species are often said to be r-selected. However, invaders must sometimes Pôle de Protection des Plantes (3P), 7 chemin de l’IRAT, 97410 St Pierre, La Réunion, France, compete with related resident species. In this case invaders should present combina- 2UMR 5175, CNRS Centre d’Ecologie tions of life-history traits that give them higher competitive ability than residents, Fonctionnelle et Evolutive (CEFE), 1919 route de even at the expense of lower colonization ability. We test this prediction by compar- Mende, 34293 Montpellier Cedex, France ing life-history traits among four fruit fly species, one endemic and three successive invaders, in La Réunion Island. Recent invaders tend to produce fewer, but larger, juveniles, delay the onset but increase the duration of reproduction, survive longer, and senesce more slowly than earlier ones. These traits are associated with higher ranks in a competitive hierarchy established in a previous study. However, the endemic species, now nearly extinct in the island, is inferior to the other three with respect to both competition and colonization traits, violating the trade-off assumption. Our results overall suggest that the key traits for invasion in this system were those that *Correspondence: Pierre-François Duyck, favoured competition rather than colonization. CIRAD 3P, 7, chemin de l’IRAT, 97410, Keywords St Pierre, La Réunion Island, France. -
Herbivore Physiological Response to Predation Risk and Implications for Ecosystem Nutrient Dynamics
Herbivore physiological response to predation risk and implications for ecosystem nutrient dynamics Dror Hawlena and Oswald J. Schmitz1 School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511 Communicated by Thomas W. Schoener, University of California, Davis, CA, June 29, 2010 (received for review January 4, 2010) The process of nutrient transfer throughan ecosystem is an important lower the quantity of energy that can be allocated to production determinant of production, food-chain length, and species diversity. (20–23). Consequently, stress-induced constraints on herbivore The general view is that the rate and efficiency of nutrient transfer up production should lower the demand for N-rich proteins (24). the food chain is constrained by herbivore-specific capacity to secure Herbivores also have low capacity to store excess nutrients (24), N-rich compounds for survival and production. Using feeding trials and hence should seek plants with high digestible carbohydrate with artificial food, we show, however, that physiological stress- content to minimize the costs of ingesting and excreting excess N. response of grasshopper herbivores to spider predation risk alters the Such stress-induced shift in nutrient demand may be especially nature of the nutrient constraint. Grasshoppers facing predation risk important in terrestrial systems in which digestible carbohydrate had higher metabolic rates than control grasshoppers. Elevated represents a small fraction of total plant carbohydrate-C, and may metabolism accordingly increased requirements for dietary digestible be limiting even under risk-free conditions (25). Moreover, stress carbohydrate-C to fuel-heightened energy demands. Moreover, di- responses include break down of body proteins to produce glucose gestible carbohydrate-C comprises a small fraction of total plant (i.e., gluconeogenesis) (14), which requires excretion of N-rich tissue-C content, so nutrient transfer between plants and herbivores waste compounds (ammonia or primary amines) (26). -
Year Group: 3 Class Teacher: Mr Brehony Topic 5: Predator
Year group: 3 Class teacher: Mr Brehony Topic 5: Predator Project 4: Literacy links to predator and prey. This week we will explore creative writing and art, looking at what makes a good beast and how to avoid being eaten! Day 1: NC Objective: Introducing: predators in fiction texts. Many of our favourite and well-known stories feature Computing: Use search technologies effectively. gruesome beasts wanting to eat the main characters, from Harry Potter to Red Riding Hood. Art: create sketch books to record observations and use them to review and For your first task, use your internet search skills to find information about these predators revisit ideas. and make a mind map all about the predator’s personality. Literacy: in narratives, creating settings, characters and plot; write in Day 2: paragraphs. Revolting Rhymes. Today’s activity is all about rewriting stories with famous beasts. Check out Roald Dahl’s retelling of Red Riding Hood. Think about the characters and what is WALT: different from the original story: https://www.youtube.com/watch?v=Y3uVQIhSYfY Then, Art: design and create a fearsome predator, using your knowledge of write your own version of the same story in paragraphs. It must be different to Roald Dahl’s! literature. Day 3: Fearsome predators in Harry Potter. There are many scary monsters in Harry Potter books and films. The basilisk is a huge snake monster that tries to eat Harry. There is some information about the creature here: https://harrypotter.fandom.com/wiki/Basilisk Today, sketch a detailed drawing of the basilisk, labelling its features. -
Interspecific Killing Among Mammalian Carnivores
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC vol. 153, no. 5 the american naturalist may 1999 Interspeci®c Killing among Mammalian Carnivores F. Palomares1,* and T. M. Caro2,² 1. Department of Applied Biology, EstacioÂn BioloÂgica de DonÄana, thought to act as keystone species in the top-down control CSIC, Avda. MarõÂa Luisa s/n, 41013 Sevilla, Spain; of terrestrial ecosystems (Terborgh and Winter 1980; Ter- 2. Department of Wildlife, Fish, and Conservation Biology and borgh 1992; McLaren and Peterson 1994). One factor af- Center for Population Biology, University of California, Davis, fecting carnivore populations is interspeci®c killing by California 95616 other carnivores (sometimes called intraguild predation; Submitted February 9, 1998; Accepted December 11, 1998 Polis et al. 1989), which has been hypothesized as having direct and indirect effects on population and community structure that may be more complex than the effects of either competition or predation alone (see, e.g., Latham 1952; Rosenzweig 1966; Mech 1970; Polis and Holt 1992; abstract: Interspeci®c killing among mammalian carnivores is Holt and Polis 1997). Currently, there is renewed interest common in nature and accounts for up to 68% of known mortalities in some species. Interactions may be symmetrical (both species kill in intraguild predation from a conservation standpoint each other) or asymmetrical (one species kills the other), and in since top predator removal is thought to release other some interactions adults of one species kill young but not adults of predator populations with consequences for lower trophic the other. -
Dynamical Analysis of Predator-Prey Model Leslie-Gower with Omnivore
Predator-Prey Model Leslie-Gower with Omnivore 126 (Exviani et al) Dynamical Analysis of Predator-Prey Model Leslie-Gower with Omnivore Rina Exviani1*, Wuryansari Muharini Kusumawinahyu2, Noor Hidayat3 1Master Program of Mathematics, Faculty of Mathematics and Natural Sciences, University of Brawijaya, Malang, Indonesia 2Department of Mathematics, Faculty of Mathematics and Natural Sciences, University of Brawijaya, Malang, Indonesia Abstract This article discussed a dynamical analysis on a model of predator-prey Leslie-Gower with omnivores which is modified by Lotka-Volterra model with omnivore. The dynamical analysis was done by determining the equilibrium point with its existing condition and analyzing the local stability of the equilibrium point. Based on the analysis, there are seven points of equilibrium. Three of them always exist while the four others exist under certain conditions. Four points of equilibrium, which are unstable, while the others three equilibrium point are local asymptotically stable under certain conditions. Moreover, numerical simulations were also conducted to illustrate the analytics. The results of numerical simulations agree with the results of the dynamical analysis. Keywords: local stability, omnivore, predator-prey models, the equilibrium point. INTRODUCTION species are omnivores. This model is constructed Lotka-Volterra model was firstly introduced by assumming there are just three species in such Lotka in 1925 and Volterra in 1926 [1]. Lotka- an ecosystem. The first species, called as prey Volterra’s study has produced a simple model of (rice plant), the prey for the second and the third predation or interaction between two species in species. The second species, called as predator an ecosystem. They also have introduced classi- (carrion), only feeds on the first species and can cal Lotka-Volterra model, which is currently de- extinct with prey. -
Aliens, Predators and Global Issues: the Evolution of a Narrative Formula
CULTURA , LENGUAJE Y REPRESENTACIÓN / CULTURE , LANGUAGE AND REPRESENTATION ˙ ISSN 1697-7750 · VOL . VIII \ 2010, pp. 43-55 REVISTA DE ESTUDIOS CULTURALES DE LA UNIVERSITAT JAUME I / CULTURAL STUDIES JOURNAL OF UNIVERSITAT JAUME I Aliens, Predators and Global Issues: The Evolution of a Narrative Formula ZELMA CATALAN SOFIA UNIVERSITY ABSTRACT : The article tackles the genre of science fiction in film by focusing on the Alien and Predator series and their crossover. By resorting to “the fictional worlds” theory (Dolezel, 1998), the relationship between the fictional and the real is examined so as to show how these films refract political issues in various symbolic ways, with special reference to the ideological construct of “global threat”. Keywords: film, science fiction, narrative, allegory, otherness, fictional worlds. RESUMEN : en este artículo se aborda el género de la ciencia ficción en el cine mediante el análisis de las películas de la serie Alien y Predator y su combinación. Utilizando la teoría de “los mundos ficcionales” (Dolezel, 1999), se examina la relación entre los planos ficcional y real para mostrar cómo estas películas reflejan cuestiones políticas de diversas formas simbólicas, con especial referencia a la construccción ideológica de la “amenaza global”. Palabras clave: film, ciencia ficción, narrativa, alegoría, alteridad, mundos fic- cionales In 2004 20th Century Fox released Alien vs. Predator, directed by Paul Anderson and starring Sanaa Latham, Lance Henriksen, Raoul Bova and Ewen Bremmer. The film combined and continued two highly successful film series: those of the 1979 Alien and its three successors Aliens (1986), Alien 3 (1992) and Alien Resurrection (1997), and of the two Predator movies, from 1987 and 1990 respectively.