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A New State Record for Aguascalientes, Mexico: Phrynosoma Cornutum (Squamata: Phrynosomatidae), the Texas Horned Lizard
Herpetology Notes, volume 7: 551-553 (2014) (published online on 3 October 2014) A new state record for Aguascalientes, Mexico: Phrynosoma cornutum (Squamata: Phrynosomatidae), the Texas horned lizard José Carlos Arenas-Monroy1*, Uri Omar García-Vázquez1, Rubén Alonso Carbajal-Márquez2 and Armando Cardona-Arceo3 Horned lizards of the genus Phrynosoma are widely most are typical of the Chihuahuan desert herpetofauna distributed through North America and range from (Morafka, 1977); some of these species have only southern Canada to western Guatemala (Sherbrooke, recently been documented (e.g. Quintero-Díaz et al., 2003). The genus comprises 17 species (Leaché and 2008; Sigala-Rodríguez et al., 2008; Sigala-Rodríguez McGuire, 2006; Nieto-Montes de Oca et al., 2014) and Greene, 2009). However, these arid plains still that exhibit exceptional morphological, ecological, remain relatively unexplored, because the majority and behavioral adaptations to arid environments of sampling efforts have focused on the canyons, (Sherbrooke, 1990, 2003). mountains, and sierras on the western half of the state Of these, Phrynosoma cornutum (Harlan, 1825) (Vázquez-Díaz and Quintero-Díaz, 2005). Here, we inhabits grasslands and scrublands from central United document the first records of Phrynosoma cornutum States southward to the Mexican states of Chihuahua, from the state of Aguascalientes. Coahuila, Durango, Nuevo León, San Luis Potosí, During a field trip on 16 July 2008, UOGV collected a Sonora, Tamaulipas, and Zacatecas from sea level up to male Phrynosoma cornutum ca. 4.7 km S of San Jacinto, 1830 m above sea level (m asl); this species has one of Rincón de Romos (22.304219°N, 102.238156°W; the largest ranges in the genus (Price, 1990). -
Sunshine Is Delicious, Rain Is Refreshing, Wind Braces Us Up, Snow Is Exhilarating; There Is Really No Such Thing As Bad Weather
3/14/11 The Midden Photo by Nathan Veatch Galveston Bay Area Chapter - Texas Master Naturalists April 2011 Table of Contents AT/Stewardship/Ed 2 Spring is Here by Diane Humes, President 2011 Outreach Opportunities Prairie Ponderings 3 Sunshine is delicious, rain is refreshing, wind braces us up, snow is exhilarating; there Wetland Wanderings 4 is really no such thing as bad weather, only different kinds of good weather. - John Ruskin Spring 2011 Class 6 Fishy Facts 7 We have had all kinds of good weather this winter, threat of ice, snow, and sleet unfortunately causing our first-ever chapter meeting cancellation in February. “Heartbreak” Turtles 7 Fortunately, we all stayed warm, dry, and safe. Our speaker, Chris LaChance, has re- Hook ‘em Horns 9 scheduled her presentation for the June meeting, so all is now well. We look forward Horny Toads 10 to all different kinds of good weather and good times for the coming year! FoGISP Training 11 The new chapter training class began February 17 and Raptor Workshop 12 continues most Thursdays into May. Check the schedule and please drop by to meet the 22 future Guppies from Julie 13 Galveston Bay Area Master Naturalists and welcome Red Harvester Ants 14 them to our mission of preservation, restoration, and education about our natural environment. The new class members bring a wealth of experience and love of nature, most citing experiences camping and exploring the outdoors since childhood. They are already into the food, fun, and friendship! The year 2011 marks our chapter’s 10th anniversary and plans are being formulated for a year of celebration. -
Texas Horned Lizard Watch Monitoring Packet
Management and Monitoring Packet What’s happened to contents all the horny toads? About Horned Lizards......................2 Everyone loves horny toads, but for many Texans, the fierce-looking, yet Management of amiable, reptiles are only a fond childhood memory. Once common through- out most of the state, horned lizards have disappeared from many parts of Horned Lizards .................................4 their former range. How to Monitor A statewide survey conducted by the Horned Lizard Conservation Society in Horned Lizards .................................7 1992 confirmed many Texans’ personal experiences—in the latter part of the Landowner Access 20th century the Texas Horned Lizard nearly disappeared from the eastern Request Form ...................................8 third of Texas and many respondents reported that horned lizards were in- creasingly rare in Central and North Texas. Only in West and South Texas do Site Survey Data Form .....................9 populations seem somewhat stable. Transect Data Form ...................... 10 Many factors have been proposed as culprits in the disappearance of horned lizards, often fondly called “horny toads,” including collection for the pet Contact Information ..................... 11 trade, spread of the red imported fire ant, changes in agricultural land use, habitat loss and fragmentation as a result of urbanization, and environmental References ..................................... 11 contaminants. For the most part, however, the decline of horned lizards has remained a mystery with little understanding of management actions that could be taken to reverse it. Even less is known about the status of our other two horned lizard species—the Round-tailed Horned Lizard and the Greater Short-horned Lizard. But you can help! Through participation in Texas Horned Lizard Watch as a citizen scientist, you can collect data and observations about the presence or absence of horned lizards and habitat characteristics on your monitoring site. -
The Effects of Burning and Grazing on Survival, Home Range, and Prey Dynamics of the Texas Horned Lizard in a Thornscrub Ecosystem
The Effects of Burning and Grazing on Survival, Home Range, and Prey Dynamics of the Texas Horned Lizard in a Thornscrub Ecosystem Anna L. Burrow1, Richard T. Kazmaier1, Eric C. Hellgren1, and Donald C. Ruthven, III2 Abstract.—We examined the effects of rotational can increase the amount of woody vegetation (Archer livestock grazing and prescribed winter burning on the and Smeins 1991). Ruthven et al. (2000) found that state threatened Texas horned lizard, Phrynosoma forbs increased on southern Texas rangelands in the first cornutum, by comparing home range sizes, survival year after a winter burn, but were not affected by estimates and prey abundance across burning and grazing. Bunting and Wright (1977) also found that grazing treatments in southern Texas. Adult lizards were forbs and grass cover increased following fire. Ants, the fitted with backpacks carrying radio transmitters and main prey of horned lizards, are not deleteriously relocated daily. Prey abundance (harvester ants, affected by fire or grazing (McCoy and Kaiser 1990; Pogonomyrmex rugosus) and activity were greater in Heske and Campbell 1991; McClaran and Van Devender burned pastures, but grazing had a variable effect 1995:165 Fox et al. 1996). depending on the timing since the last burn. Home ranges in burned pastures were smaller than in Specific objectives of our research were to: compare the unburned pastures in the active season. Level of grazing relative abundance and activity of harvester ants, (heavy vs. moderate) did not affect home range size. Pogonomyrmex rugosus, the main food source of the Texas Summer survival rates of horned lizards were higher in horned lizard, among different burning and grazing the moderately grazed sites than the heavily grazed sites. -
Phrynosoma Cornutum and P
STRATEGIES OF PREDATORS AND THEIR PREY: OPTIMAL FORAGING AND HOME RANGE BEHAVIOR OF HORNED LIZARDS (PHRYNOSOMA SPP.) AND RESPONSE BY HARVESTER ANTS (POGONOMYRMEX DESERTORUM). Item Type text; Dissertation-Reproduction (electronic) Authors MUNGER, JAMES CAMERON. Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 10/10/2021 20:56:51 Link to Item http://hdl.handle.net/10150/185315 INFORMATION TO USERS This reproduction was made from a copy of a document sent to us for microfilming. While the most advanced technology has been used to photograph and reproduce this document, the quality of the reproduction is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help clarify markings or notations which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure complete continuity. 2. When an image on the film is obliterated with a round black mark, it is an indication of either blurred copy because of movement during exposure, duplicate copy, or copyrighted materials that should not have been filmed. For blurred pages, a good image of the page can be found in the adjacent frame. -
Texas Horned Lizards If You’Re Like Most Texans of a Certain Age, You’Ve Got Memories of finding “Buckets” of Horned Lizards in Your Youth
Subscribe Past Issues Translate RSS View this email in your browser September/October 2020 Newsletter In this issue: Visit our website for updates: Bexar Audubon Society President's Message Update on Bird City Texas Audubon Course Online: Puffins BAS August 26 Online Meeting: Bats BAS/Mitchell Lake Sept. 8: Hummingbirds BAS September 23 Online Meeting: American Badgers BAS October 8: Preventing Bird Strikes BAS October 28 Online Meeting: Building Bird-friendly Cities BAS/SA Audubon Nov. 5: Texas Horned Lizard Sparrow ID Presentation Sept. 3: S. A. Audubon Society Mitchell Lake Audubon Center Online Presentations Welcome New BAS Members Thank You, BAS Donors! Call for BAS Volunteers AmazonSmile Area Birding Info Membership & BAS Board PRESIDENT'S MESSAGE Patsy Inglet, President Even though COVID-19 cases are on a downward trend in our area and some schools are offering in- person instruction, Bexar Audubon is continuing to hold our meetings and other programs remotely. Of course, we are looking forward to the re-opening of Mitchell Lake Audubon Center sometime this fall so we can see birds and our fellow birders in person and stretch our birding brain cells while keeping our social distance. Great Texas Birding Classic: Another opportunity is the 24th Annual Great Texas Birding Classic, postponed this spring due to health concerns, but now rescheduled for October 1-31. With new rules and birding team categories, it still supports Texas Parks & Wildlife bird and birding conservation project grants while meeting pandemic health guidelines. Take a look at the GTBC website, put together a team, pick a date in October that works for you, and get out there! Special Event: Looking ahead to the first Thursday of November (11/5), Bexar Audubon and San Antonio Audubon are once again teaming up for a fall event with a very special speaker, Dr. -
Anolis Equestris) Should Be Removed When Face of a Watch
VOLUME 15, NUMBER 4 DECEMBER 2008 ONSERVATION AUANATURAL ISTORY AND USBANDRY OF EPTILES IC G, N H , H R International Reptile Conservation Foundation www.IRCF.org Central Netted Dragons (Ctenophorus nuchalis) from Australia are popular in captivity due to their striking appearance and great temperament. See article on p. 226. Known variously as Peters’ Forest Dragon, Doria’s Anglehead Lizard, or Abbott’s Anglehead Lizard (depending on subspecies), Gonocephalus doriae is known from southern Thailand, western Malaysia, and Indonesia west of Wallace’s Line SHANNON PLUMMER (a biogeographic division between islands associated with Asia and those with plants and animals more closely related to those on Australia). They live in remaining forested areas to elevations of 1,600 m (4,800 ft), where they spend most of their time high in trees near streams, either clinging to vertical trunks or sitting on the ends of thin branches. Their conservation status has not been assessed. MICHAEL KERN KENNETH L. KRYSKO KRISTA MOUGEY Newly hatched Texas Horned Lizard (Phrynosoma cornutum) on the Invasive Knight Anoles (Anolis equestris) should be removed when face of a watch. See article on p. 204. encountered in the wild. See article on p. 212. MARK DE SILVA Grenada Treeboas (Corallus grenadensis) remain abundant on many of the Grenadine Islands despite the fact that virtually all forested portions of the islands were cleared for agriculture during colonial times. This individual is from Mayreau. See article on p. 198. WIKIPEDIA.ORG JOSHUA M. KAPFER Of the snakes that occur in the upper midwestern United States, Populations of the Caspian Seal (Pusa caspica) have declined by 90% JOHN BINNS Bullsnakes (Pituophis catenifer sayi) are arguably the most impressive in in the last 100 years due to unsustainable hunting and habitat degra- Green Iguanas (Iguana iguana) are frequently edificarian on Grand Cayman. -
History of Insular Ecology and Biogeography - Harold Heatwole
OCEANS AND AQUATIC ECOSYSTEMS- Vol. II - History of Insular Ecology and Biogeography - Harold Heatwole HISTORY OF INSULAR ECOLOGY AND BIOGEOGRAPHY Harold Heatwole North Carolina State University, Raleigh, North Carolina, USA Keywords: islands; insular dynamics; One Tree Island; Aristotle; Darwin; Wallace; equilibrium theory; biogeography; immigration; extinction; species-turnover; stochasticism; determinism; null hypotheses; trophic structure; transfer organisms; assembly rules; energetics. Contents 1. Ancient and Medieval Concepts: the Birth of Insular Biogeography 2. Darwin and Wallace: the Dawn of the Modern Era 3. Genetics and Insular Biogeography 4. MacArthur and Wilson: the Equilibrium Theory of Insular Biogeography 5. Documenting and Testing the Equilibrium Theory 6. Modifying the Equilibrium Theory 7. Determinism versus Stochasticism in Insular Communities 8. Insular Energetics and Trophic Structure Stability Glossary Bibliography Biographical Sketch Summary In ancient times, belief in spontaneous generation and divine creation dominated thinking about insular biotas. Weaknesses in these theories let to questioning of those ideas, first by clergy and later by scientists, culminating in Darwin's and Wallace's postulation of evolution through natural selection. MacArthur and Wilson presented a dynamic equilibrium model of insular ecology and biogeography that represented the number of species on an island as an equilibrium between immigration and extinction rates, as influenced by insular sizes and distances from mainlands. This model has been tested and found generally true but requiring minor modifications, such as accounting for disturbancesUNESCO affecting the equilibrium nu–mber. EOLSS There has been basic controversy as to whether insular biotas reflect deterministic or stochastic processes. It is likely that neither extreme SAMPLEis completely correct but rather CHAPTERS the two kinds of processes interact. -
MGMT BULLETIN2-V2
MANAGEMENTOFTEXASHORNEDLIZARDS ScottE.HenkeandWm.ScottFair ResearchScientists CaesarKIebergWildlifeResearchInstitute TexasA&MUniversity-Kingsville,Kingsville,Texas78363 Abstract: Texas horned lizards are declining in abundance and distribution in Texas. There are no obvious causes for their decline; however, multiple factors such as widespread pesticide use, habitat loss, over-collection, and fire ants have been suggested as possible reasons. Texas horned lizards are a threatened species in Texas and are listed as a Federal Species of Concern. The ecology and habitat requirements of Texas horned lizards are outlined in this paper and management practices are sug- gested that should benefit this species. INTRODUCTION TAXONOMY AND DESCRIPTION The Texas horned lizard is a part of the history Much like the bandits of western folklore, Texas and culture of Texas. In fact, most Texans have fond horned lizards have used many aliases. Two of the memories of growing up with Texas horned lizards. most commonly-used misnomers are horned toads Horned lizards are as much of Texas folklore as cow- and horned frogs. However, Texas horned lizards boys, longhorns, the Alamo, and listening to coy- are, as their true name implies, lizards! Toads are otes howl at the moon. Unfortunately, many young tailless amphibians with rough, warty skin and live Texans have not experienced the thrill of seeing a on moist land or in water (i.e., during breeding). horned lizard in their backyard. This is because the Frogs also are tailless amphibians but have smooth Texas horned lizard population has declined in Texas skin and are equally adapted to land and water. over the past couple of decades. -
Center for Conservation and Research at San Antonio Zoo® Celebrates More Hatchings of Texas Horned Lizards
FOR IMMEDIATE RELEASE | August 13, 2020 San Antonio Zoo Contact: Hope Roth, VP Marketing, Sales and Communication [email protected] LINK TO IMAGES: https://sanantoniozoo.box.com/s/6zecso99uff8xw26arvx5fjqzsw7hxol Center for Conservation and Research at San Antonio Zoo® Celebrates More Hatchings of Texas Horned Lizards SAN ANTONIO - The Center for Conservation and Research at San Antonio Zoo is thrilled to announce another successful Texas horned lizard hatching. Although this is not the first clutch of eggs to hatch this season, it is an important milestone for the Texas Horned Lizard Reintroduction Project: they now have enough captive-born lizards to conduct their first release into the wild. About 100 young lizards are expected to be released this Fall. This is a tremendous step forward for the Texas Horned Lizard Reintroduction Project, which will bolster the survival of their species here in South Texas. Since launching the project four years ago, the Center for Conservation and Research team has been diligently working on breeding and preserving the State Reptile of Texas by utilizing Geographic Information System (GIS) data, genetics, and current knowledge about horned lizard ecology and distribution in an effort to release large numbers of captive-born individuals in suitable habitats. “I am proud of the work we are doing to bring back the beloved Texas horned lizard,” said Tim Morrow, President & CEO of San Antonio Zoo. “While we have a multitude of global conservation projects, it’s especially rewarding to be able to secure a future for wildlife right here in our backyard,” said Morrow. To monitor the lizards after they’ve been released, San Antonio Zoo will utilize a horned lizard detection canine, a dog that is specially trained to cue on the scent of Texas horned lizards as well as their shed skin, eggs, and scat. -
Chapter 11A Structuring Herbivore Communities
CHAPTER 11A STRUCTURING HERBIVORE COMMUNITIES The role of habitat and diet SIPKE E. VAN WIEREN AND FRANK VAN LANGEVELDE Resource Ecology Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands E-mail: [email protected] Abstract. This chapter tries to address the question “Why are there so many species?” with a focus on the diversity of herbivore species. We review several mechanisms of resource specialisation between herbivore species that allow coexistence, ranging from diet specialisation, habitat selection to spatial heterogeneity in resources. We use the ungulate community in Kruger National Park to illustrate approaches in niche differentiation. The habitat overlap of the ungulate species is analysed, continued with the overlap in diet and the spatial heterogeneity in resources. This focus on the constraints on species’ exclusive resources is a useful tool for understanding how competitive interactions structure communities and limit species diversity. In explaining community structure of mobile animals, we argue that the existence of exclusive resources governed by spatial heterogeneity plays an important role. Trade- offs between food availability and quality, food availability and predation risk, or food and abiotic conditions (different habitat types) may constrain competitive interactions among mobile animals and allow the existence of exclusive resources. We propose that body mass of the animals considered is crucial here as animals with different body mass use different resources and perceive spatial heterogeneity in resources differently. A functional explanation of the role of body mass in the structuring of communities is still lacking while the study of how much dissimilarity is minimally needed to permit coexistence between strongly overlapping species is still in its infancy. -
Society for Ecological Restoration Intern a T I O N
society for ecological restoration intern a t i o n a l The SER International Primer o n Ecological Restoration Society for Ecological Restoration International Science & Policy Working Group (Version 2: October, 2004)* Section 1: Overview . 1 Section 2: Definition of Ecological Restoration . 3 Section 3: Attributes of Restored Ecosystems . 3 Section 4: Explanations of Terms . 4 Section 5: Reference Ecosystems . 8 Section 6: Exotic Species . 9 Section 7: Monitoring and Evaluation . 10 Section 8: Restoration Planning. 11 Section 9: Relationship Between Restoration Practice and Restoration Ecology . 11 Section 10: Relationship of Restoration to Other Activities . 12 Section 11: Integration of Ecological Restoration into a Larger Program. 13 This document should be cited as: Society for Ecological Restoration International Science & Policy Working Group. 2004. The SER International Primer on Ecological Restoration. www.ser.org & Tucson: Society for Ecological Restoration International. The principal authors of this Primer were André Clewell (Quincy, FL USA), James Aronson (Montpellier, France), and Keith Winterhalder (Sudbury, ON Canada). Clewell initially proposed the Primer and wrote its first draft. Aronson and Winterhalder, in collaboration with Clewell, revised the Primer into its present form. Winterhalder, in his capacity as Chairperson of SER’s Science & Policy Working Group, coordinated this effort and invited other Working Group members to participate. Eric Higgs (Victoria, BC Canada) crafted the Overview sec- tion. Dennis Martinez (Douglas City, CA USA) contributed a position paper that became the basis for text pertaining to cultural ecosystems. Other Working Group members provided critiques and suggestions as the work progressed, including Richard Hobbs (Murdoch, WA Australia), James Harris (London, UK), Carolina Murcia (Cali, Colombia), and John Rieger (San Diego, CA USA).