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The Impact of Cognition on Seed Dispersal
Fall 08 Animal Cognition Meets Ecosystem Ecology: the Impact of Cognition on Seed Dispersal Francesca Soldati Doctor of Philosophy 2015 Animal Cognition Meets Ecosystem Ecology: the Impact of Cognition on Seed Dispersal Francesca Soldati A thesis submitted in partial fulfilment of the requirements of the University of Lincoln for the degree of Doctor of Philosophy This research programme was carried out in collaboration with the School of Life Sciences August 2015 Abstract Seed dispersal by endozoochory is important for the maintenance of plant populations and biodiversity. As a result, understanding the impact that frugivores’ activities have on seed dispersal is essential in order to better understand plant population dynamics. One factor that is known to affect an animal’s behaviour, yet has received little attention in this context, is animal cognition i.e. whether the information animals learn and remember affects where they access fruit and deposit seeds. Therefore, the aim of this thesis was to address how animal learning and memory affects the seed dispersal process, using two key approaches – experimental tests of frugivore cognition, and a model paramaterised to examine the consequences of different cognitive abilities on seed dispersal. Three questions were investigated: (1) The “where?” - whether the ability of frugivores to relocate previously visited food sources impacts upon their movements and, as a consequence, on plants’ seed shadows. The spatial learning and memory of red-footed tortoises was tested using an egocentric task. Tortoises were able to navigate efficiently in the environment, and remembered the spatial location of food for at least two months. A seed dispersal model designed to test whether frugivores with different spatial memory skills differently affect plants’ seed shadow, suggested that animals with long spatial memory relocate more efficiently food sources than animals’ with shorter memory. -
Burrowing Parrots Cyanoliseus Patagonus As Long-Distance Seed Dispersers of Keystone Algarrobos, Genus Prosopis, in the Monte Desert
diversity Article Burrowing Parrots Cyanoliseus patagonus as Long-Distance Seed Dispersers of Keystone Algarrobos, Genus Prosopis, in the Monte Desert Guillermo Blanco 1,* , Pedro Romero-Vidal 2, Martina Carrete 2 , Daniel Chamorro 3 , Carolina Bravo 4, Fernando Hiraldo 5 and José L. Tella 5 1 Department of Evolutionary Ecology, Museo Nacional de Ciencias Naturales CSIC, 28006 Madrid, Spain 2 Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera, km 1, 41013 Sevilla, Spain; [email protected] (P.R.-V.); [email protected] (M.C.) 3 Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Av. Carlos III s/n, 45071 Toledo, Spain; [email protected] 4 Centre d’Etudes Biologiques de Chizé, UMR 7372, CNRS and La Rochelle Université, F-79360 Beauvoir-sur-Niort, France; [email protected] 5 Department of Conservation Biology, Estación Biológica de Doñana CSIC, 41092 Sevilla, Spain; [email protected] (F.H.); [email protected] (J.L.T.) * Correspondence: [email protected] Abstract: Understanding of ecosystem structure and functioning requires detailed knowledge about plant–animal interactions, especially when keystone species are involved. The recent consideration of parrots as legitimate seed dispersers has widened the range of mechanisms influencing the life cycle of many plant species. We examined the interactions between the burrowing parrot Cyanoliseus Citation: Blanco, G.; Romero-Vidal, patagonus and two dominant algarrobo trees (Prosopis alba and Prosopis nigra) in the Monte Desert, P.; Carrete, M.; Chamorro, D.; Bravo, Argentina. We recorded the abundance and foraging behaviour of parrots; quantified the handling, C.; Hiraldo, F.; Tella, J.L. -
The Functional Roles of Mammals in Ecosystems
Journal of Mammalogy, 100(3):942–964, 2019 DOI:10.1093/jmammal/gyy183 The functional roles of mammals in ecosystems Thomas E. Lacher, Jr.,* Ana D. Davidson, Theodore H. Fleming, Emma P. Gómez-Ruiz, Gary F. McCracken, Norman Owen-Smith, Carlos A. Peres, and Stephen B. Vander Wall Downloaded from https://academic.oup.com/jmammal/article-abstract/100/3/942/5498004 by Colorado State University user on 29 May 2019 Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843-2258, USA (TEL) Global Wildlife Conservation, P.O. Box 129, Austin, TX 78767-0129, USA (TEL) Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO 80523, USA (ADD) Colorado Natural Heritage Program, Colorado State University, Fort Collins, CO 80523, USA (ADD) Emeritus, Department of Biology, University of Miami, Coral Gables, FL 33124, USA (THF) Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México (EPG) Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA (GFM) Centre for African Ecology, School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Wits 2050, South Africa (NO-S) School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom (CAP) Department of Biology and the Program in Ecology, Evolution and Conservation Biology, University of Nevada, Reno, NV 89557, USA (SBVW) * Correspondent: [email protected] The diverse functional roles of over 6,000 species of extant mammals that range in body size across eight orders of magnitude, from blue whales (Balaenoptera musculus) to tiny Etruscan shrews (Suncus etruscus), contribute to shaping Earth’s ecosystems. -
ECOLOGY and CONSERVATION of LARGE-BODIED AVIAN FRUGIVORES of LUZON, PHILIPPINES CARMELA P. ESPAÑOLA a Thesis Submitted in Part
ECOLOGY AND CONSERVATION OF LARGE-BODIED AVIAN FRUGIVORES OF LUZON, PHILIPPINES CARMELA P. ESPAÑOLA A thesis submitted in partial fulfilment of the requirements of the Manchester Metropolitan University for the degree of Doctor of Philosophy Division of Biology and Conservation Ecology School of Science and the Environment Manchester Metropolitan University 2013 ABSTRACT Avian frugivores across Southeast Asia, and in the Philippines in particular, are seriously threatened owing to massive loss of habitat and direct exploitation through hunting and the pet trade. Their declines may have dire consequences for wider ecological processes as many frugivores are also seed dispersers. Conservation programmes in the Philippines are crippled by a lack of knowledge on the status, abundance and ecology of frugivores which extend to other endemic species in the country. This PhD identified factors that influenced frugivore community composition as well as drivers of frugivore distribution across Luzon, the largest island in the Philippines. It also developed cost-effective methods for gathering baseline ecological data to inform conservation measures for frugivores and other little-known species over large geographical areas. This included a way of correcting for the bias caused by non-random transect placement in a study site which is often the case during bird surveys in the tropics. Twenty-five species of pigeons, parrots and hornbills were surveyed using distance sampling along nearly 500 km of line transects at 14 sites across the island of Luzon. I documented surprisingly few reliable disappearances of frugivores from individual forest patches – in fact this and other fieldwork since 2000 has increased the known extent of occurrence of several species. -
The Evolution of Seed Dispersal Syndromes in Prunus
University of Nevada, Reno The evolution of seed dispersal syndromes in Prunus A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Ecology, Evolution and Conservation Biology by Maurie J. Beck Stephen B. Vander Wall, Dissertation Advisor August, 2009 THE GRADUATE SCHOOL We recommend that the dissertation prepared under our supervision by MAURIE BECK entitled The Evolution Of Seed Dispersal Syndromes In Prunus be accepted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Stephen B. Vander Wall, Advisor Stephen H. Jenkins, Committee Member William S. Longland, Committee Member David W. Zeh, Committee Member Thomas J. Nickles , Graduate School Representative Marsha H. Read, Ph. D., Associate Dean, Graduate School August, 2009 i ABSTRACT There are two fruit types in the genus Prunus. The majority of species have fleshy- fruited drupes, which are considered the ancestral phenotype. In the deserts of Eurasia and North America there are also species that produce dry fruits and large nuts, suggesting this fruit type has originated independently on numerous occasions in response to dry conditions. Fleshy-fruited Prunus are dispersed by frugivorous animals, primarily birds and some mammalian carnivores. In this dissertation, by documenting complete seed fate pathways, I demonstrate that desert peach (Prunus andersonii), a dry, nut-producing species in the western Great Basin of North America, is only dispersed by scatter- hoarding rodents. Additionally, I demonstrate that western chokecherry (P. virginiana var. demissa, Rosaceae) is also dispersed by scatter-hoarding rodents, following primary dispersal by endozoochorous frugivores. This type of two-phased seed dispersal is a form of diplochory, a process that employs different modes of dispersal during sequential dispersal phases and usually offers unique benefits during each phase. -
Bird and Ant Synergy Increases the Seed Dispersal Effectiveness of an Ornithochoric Shrub
Oecologia DOI 10.1007/s00442-016-3571-z COMMUNITY ECOLOGY – ORIGINAL RESEARCH Bird and ant synergy increases the seed dispersal effectiveness of an ornithochoric shrub Paulo H. S. A. Camargo1 · Milene M. Martins2 · Rodrigo M. Feitosa3 · Alexander V. Christianini4 Received: 15 August 2015 / Accepted: 24 January 2016 © Springer-Verlag Berlin Heidelberg 2016 Abstract Seed dispersal may involve different vectors (78 %) than it was beneath the parent (44 %), whereas of dispersal in two or more sequential phases (i.e., diplo- ants carried seeds to their nests, where seedling survival chory). However, contributions of each phase to the over- was higher (83 %) than in controls away from their nests all seed dispersal effectiveness (SDE) are poorly under- (63 %). Diplochory allowed a 42 % increase in SDE com- stood and hard to evaluate due to post-dispersal processes pared to dispersal in phase 1 alone. High lipid content in that affect seed and seedling survival. We investigated the fruit pulp of E. ambiguum may facilitate the inclusion the simultaneous bird (phase 1, in plant canopy) and ant of ants in a second step of dispersal after diaspores reach (phase 2, on the floor) contributions to SDE with the orni- the floor. Ants can also buffer the dispersal of diplochorous thochoric shrub Erythroxylum ambiguum in a Brazilian plants against decreases in phase 1 dispersers. Atlantic forest. Twelve species of birds fed on fruit and dis- persed approximately 26 % of the seed crop. The remain- Keywords Atlantic forest · Diplochory · Myrmecochory · ing seed crop, 90 % of which contained viable seeds, fell to Primary dispersal · Secondary dispersal the ground beneath the parental plant. -
Schedule of Sessions
Schedule of Sessions SYMP: Symposia should consist of focused, integrated presentations COS: Contributed oral sessions are collections of submitted abstracts assessing current understanding regarding a particular research problem, each organized around a common study taxon, ecosystem, sub-discipline, concept, application, or educational theme. Generally, symposia should concept/process, or tool/application. Contributed abstracts are reviewed have broad appeal within the ecological community or involve integration and organized by the Program Chairs and Program Coordinator. across sub-disciplines. Symposia focused within particular areas of IGN: Ignite ESA is a session format where participants are given five ecology may be considered if these are areas of particularly active minutes to speak accompanied by 20 slides. Each slide is displayed for research, or if the symposia offer important new insights. Symposia may 15 seconds, and slides are automatically advanced. The presentations integrate historical perspectives explicitly, but this should generally be in are meant to "ignite" the audience on a subject, i.e. to generate the context of understanding current research and research questions. awareness and to stimulate thought and action on the subjects Presentations should offer new results and syntheses; speakers should not presented. simply review previous work and results. No more than 24 symposia can be accepted for an Annual Meeting. PS: Poster sessions are collections of submitted abstracts each organized around a common study taxon, ecosystem, sub-discipline, concept/ OOS: Organized oral sessions allow a wider range of thematic and process, or tool/application. Contributed abstracts are reviewed and conceptual options than symposia. Presentations included in an OOS organized by the Program Chairs and Program Coordinator. -
Synzoochory: the Ecological and Evolutionary Relevance of a Dual Interaction
Biol. Rev. (2019), 94, pp. 874–902. 874 doi: 10.1111/brv.12481 Synzoochory: the ecological and evolutionary relevance of a dual interaction JoseMaríaG´ omez´ 1,∗ , Eugene W. Schupp2 and Pedro Jordano3 1Departamento de Ecología Funcional y Evolutiva, Estaci´on Experimental de Zonas Aridas´ (EEZA-CSIC), Ctra Sacramento s/n, La Ca˜nada de San Urbano, E-04120 Almería, Spain 2Department of Wildland Resources and Ecology Center, S. J. and Jesse E. Quinney College of Natural Resources, 5230 Old Main Hill, Utah State University, Logan, UT 84322-5230, U.S.A. 3Departamento de Ecología Integrativa, Integrative Ecology Group, Estaci´on Biol´ogica de Do˜nana (EBD-CSIC), Avda. Americo Vespucio S/N, E-41092 Sevilla, Spain ABSTRACT Synzoochory is the dispersal of seeds by seed-caching animals. The animal partner in this interaction plays a dual role, acting both as seed disperser and seed predator. We propose that this duality gives to synzoochory two distinctive features that have crucial ecological and evolutionary consequences. First, because plants attract animals that have not only positive (seed dispersal) but also negative (seed predation) impacts on their fitness, the evolution of adaptations to synzoochory is strongly constrained. Consequently, it is not easy to identify traits that define a synzoochorous dispersal syndrome. The absence of clear adaptations entails the extra difficulty of identifying synzoochorous plants by relying on dispersal traits, limiting our ability to explore the full geographic, taxonomic and phylogenetic extent of synzoochory. Second, the positive and negative outcomes of interactions with synzoochorous animals are expressed simultaneously. Consequently, synzoochorous interactions are not exclusively mutualistic or antagonistic, but are located at some point along a mutualism–antagonism continuum. -
Dispersion Épizoochore Des Graines Par Les Ongulés Sauvages Dans Des Paysages Changeants : Le Cerf Élaphe Comme Étude De Cas Ushma Shukla
Dispersion épizoochore des graines par les ongulés sauvages dans des paysages changeants : le cerf élaphe comme étude de cas Ushma Shukla To cite this version: Ushma Shukla. Dispersion épizoochore des graines par les ongulés sauvages dans des paysages changeants : le cerf élaphe comme étude de cas. Sciences agricoles. Université d’Orléans, 2020. Français. NNT : 2020ORLE3060. tel-03166043 HAL Id: tel-03166043 https://tel.archives-ouvertes.fr/tel-03166043 Submitted on 11 Mar 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. UNIVERSITÉ D’ORLÉANS ÉCOLE DOCTORALE Santé, Sciences Biologiques et Chimie du Vivant INRAE Val de Loire, UR Écosystèmes Forestiers THÈSE présentée par Ushma SHUKLA soutenue le : 24 Septembre 2020 pour obtenir le grade de : Docteur de l’Université d’Orléans Discipline/ Spécialité : Écologie Epizoochorous seed dispersal by wild ungulates in changing landscapes the red deer as a case study CO-DIRECTEURS BALTZINGER Christophe IDAE, HDR, INRAE Val de Loire, Université d’Orléans REINEKING Björn Directeur de recherche, INRAE LESSEM, -
INVESTIGATING SEED DISPERSAL and SEED PREDATION in a Hawallan
3~ \\ INVESTIGATING SEED DISPERSAL AND SEED PREDATION IN A HAWAllAN DRY FOREST COMMUNITY IMPLICATIONS FOR CONSERVATION AND MANAGEMENT A THESIS SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAI'I IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN BOTANICAL SCIENCES (BOTANY - ECOLOGY, EVOLUTION, AND CONSERVATION BIOLOGY) DECEMBER 2004 By Charles G. Chimera Thesis Committee: Donald Drake, Chairperson Gerald Carr David Duffy Lloyd L. Loope ACKNOWLEDGEMENTS I would like to thank the EECB Program, the Hawai'i Audubon Society, the Dai Ho Chun Fellowship, and the Charles H. Lamoureux Fellowship in Plant Conservation for providing funding for my research. I would like to thank Sumner Erdman and Tony Durso ofUlupalakua Ranch for facilitating access to my study site through ranch lands. I would like to thank the staffofthe Natural Area Reserve System, particularly Betsy Gagne, Bill Evanson and Bryon Stevens, for providing access to the Kanaio Natural Area Reserve as well as for logistical support. Lloyd Loope and Art Medeiros were extremely generous with their knowledge and guidance, factors that greatly influenced my decision to conduct research in Hawaiian dry forests. Lloyd Loope also provided vehicle support during the initial stages ofmy research. I thank my thesis committee chair, Don Drake, and my committee members, Gerry Carr, Dave Duffy and Lloyd Loope for providing me with guidance and assistance during all stages ofmy thesis research. Finally, I would especially like to thank my wife, Melissa, for providing me with unlimited patience and support during my entire graduate experience. 111 TABLE OF CONTENTS ACKNOWLEDGEMENTS .111 LIST OF TABLES VI LIST OF FIGURES VIII CHAPTER 1. -
Scatter-Hoarding Corvids As Seed Dispersers for Oaks and Pines: a Review of a Widely Distributed Mutualism and Its Utility to Habitat Restoration
Volume 118, 2016, pp. 215–237 DOI: 10.1650/CONDOR-15-125.1 REVIEW Scatter-hoarding corvids as seed dispersers for oaks and pines: A review of a widely distributed mutualism and its utility to habitat restoration Mario B. Pesendorfer,1,2,3* T. Scott Sillett,2 Walter D. Koenig,3,4 and Scott A. Morrison5 1 School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA 2 Migratory Bird Center, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, D.C., USA 3 Cornell Lab of Ornithology, Ithaca, New York, USA 4 Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, USA 5 The Nature Conservancy, San Francisco, California, USA * Corresponding author: [email protected] Submitted July 13, 2015; Accepted December 1, 2015; Published February 3, 2016 ABSTRACT Seed dispersal mutualisms with scatter-hoarders play a crucial role in population dynamics of temperate large-seeded trees. These behaviors shape seed dispersal patterns, which can be applied to conservation of populations, communities, and even ecosystems dominated by large-seeded trees. We draw on a growing body of literature to describe the ecological context and consequences of scatter-hoarding as a seed dispersal mechanism. We synthesize the quantitative literature on the interaction between members of the avian family Corvidae (crows, ravens, jays, magpies, and nutcrackers) and nut-bearing trees such as pines (Pinus spp.) and oaks (Quercus spp.) to examine unique aspects of avian scatter-hoarders as seed dispersers. During the scatter-hoarding process, seed selectivity, transportation distance, hoarding frequency, and cache placement affect seed dispersal effectiveness, a measure of the quantity and quality of dispersal. -
Supplement of the Fate of Seeds in the Soil: a Review of the Influence Of
Supplement of SOIL, 1, 131–146, 2015 http://www.soil-journal.net/1/131/2015/ doi:10.5194/soil-1-131-2015-supplement SOIL © Author(s) 2015. CC Attribution 3.0 License. Supplement of The fate of seeds in the soil: a review of the influence of overland flow on seed removal and its consequences for the vegetation of arid and semiarid patchy ecosystems E. Bochet Correspondence to: E. Bochet ([email protected]) 1 1 Supplementary material. Reference list of the online literature compilation of 697 papers on 2 the fate of seeds in drylands published between 1974 and 2013. 3 Abbo, S., Y. Saranga, et al. (2009). "Reconsidering domestication of legumes versus cereals in 4 the ancient near east." Quarterly Review of Biology 84(1): 29-50. 5 Abiyu, A., M. Lemenih, et al. (2011). "Status of native woody species diversity and soil 6 characteristics in an exclosure and in plantations of Eucalyptus globulus and Cupressus 7 lusitanica in northern Ethiopia." Mountain Research and Development 31(2): 144-152. 8 Aerts, R., W. Maes, et al. (2006). "Surface runoff and seed trapping efficiency of shrubs in a 9 regenerating semiarid woodland in northern Ethiopia." Catena 65(1): 61-70. 10 Aerts, R., K. Van Overtveld, et al. (2006). "Species composition and diversity of small 11 Afromontane forest fragments in northern Ethiopia." Plant Ecology 187(1): 127-142. 12 Aguado, M., M. J. Vicente, et al. (2012). "The role of the soil seed bank in the unpredictable 13 habitat of Anthemis chrysantha J. Gay, a critically endangered species." Flora: Morphology, 14 Distribution, Functional Ecology of Plants 207(12): 903-907.