Download August 2020
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The New Age of Extinction
Wednesday, Apr. 01, 2009 The New Age of Extinction By Bryan Walsh / Madagascar There are at least 8 million unique species of life on the planet, if not far more, and you could be forgiven for believing that all of them can be found in Andasibe. Walking through this rain forest in Madagascar is like stepping into the library of life. Sunlight seeps through the silky fringes of the Ravenea louvelii, an endangered palm found, like so much else on this African island, nowhere else. Leaf-tailed geckos cling to the trees, cloaked in green. A fat Parson's chameleon lies lazily on a branch, beady eyes scanning for dinner. But the animal I most hoped to find, I don't see at first; I hear it, though — a sustained groan that electrifies the forest quiet. My Malagasy guide, Marie Razafindrasolo, finds the source of the sound perched on a branch. It is the black-and-white indri, largest of the lemurs — a type of small primate found only in Madagascar. The cry is known as a spacing call, a warning to other indris to keep their distance, to prevent competition for food. But there's not much risk of interlopers. The species — like many other lemurs, like many other animals in Madagascar, like so much of life on Earth — is endangered and dwindling fast. Madagascar — which separated from India 80 million to 100 million years ago before eventually settling off the southeastern coast of Africa — is in many ways an Earth apart. All that time in geographic isolation made Madagascar a Darwinian playground, its animals and plants evolving into forms utterly original. -
Newsletter V5-N2
V irg in ia Herpetological Society August 1995 Volume 5, Number 2 NEWSLETTER Catesheiana Co-editors President Paul W. Saltier Ron Southwick R. Terry Spohn Paul Sattler - Pres. Elect Newsletter Editor Sccrctarv/Trcasurcr Mike Finder Bob Hogan microdistribution patterns of Worldwide Amphibian Decline salamanders in terrestrial environments Is There a Virginia Connection? (Wyman and Hawksley-Lescault, 1987). Increased ultraviolet radiation, apparently due to the thinning of the Submitted by Joseph C. Mitchell, Department of Biology, ozone layer, has been shown to k ill University o f Richmond, Richmond, VA 23173 developing eggs of the Cascades frog (Rana cascadae) and western toad (Bufo boreas) (Blaustein et al., 1994a). Amphibians have received Congress of Herpetology held in The widespread fungus (Saprolegnia considerable media and scientific Canterbury, England in 1989. ferax) introduced into ponds and lakes attention over the past half dozen years Pin-pointing the causes of in the Pacific northwest by introduced because of species extinctions and these problems has been elusive. Early fish has caused egg mortality in the population declines worldwide. on, scientists were looking for one western toad (Blaustein et al., 1994b). Observations such as (1) the last global smoking gun, but the results of An unidentified virus carried by individual of the Australian gastric studies that have been published since introduced fish, such as tilapia, brooding frog (Rheobatrachus silus) the alarm surfaced indicate that the guppies, and carp, is suspected as was seen in 1979 (Tyler and Davies, causes are varied and often local. The causing frog decline in Australia 1985); (2) the golden toad (Bufo most common cause of local population (Anderson, 1995). -
Partial Report of Activities Carried out in the Masako Forest Reserve
PARTIAL REPORT OF ACTIVITIES CARRIED OUT IN THE MASAKO FOREST RESERVE PROJECT ID: 27590-1 By Franck Masudi Muenye Mali May 2019 The project is funded by the Rufford Foundation “Amphibian diversity and environmental education for local people and capacity building for decision makers for the survival of Masako Forest Reserve in the DRC” PROJECT ID: 27590-1 Table of Contents 1. INTRODUCTION ............................................................................................................................... 3 2. FIELD METHODOLOGY ..................................................................................................................... 3 2.1. Investigation ............................................................................................................................ 3 2.2. Amphibian inventory .................................................................................................................... 4 3. PRELIMINARY RESULTS .................................................................................................................... 5 3.1. Views and proposals collected from the local community on the destruction of the Masako forest reserve ...................................................................................................................................... 5 3.1.1. Summary of responses to questions submitted to the local community ....................... 5 3.1.2. Immediate consequences observed following the destruction of the Masako reserve . 5 3.2. List of direct consequences -
The Puzzling Golden Toad Crack the Puzzle and Reveal the Secret Word Activity Guide
The Puzzling Golden Toad Crack the puzzle and reveal the secret word Activity Guide Did you know that the specific effects of climate change on animals are still unknown? Meet the golden toad and learn why scientists are still puzzled by his mysterious disappearance. Try This! Step 1: Set up the time line sheet. Step 2: Find the seven puzzle pieces and read the information on each. Step 3: Organize the time line to reveal the secret word. How do you think scientists study the effect of climate change on species such as the Golden Toad? Climate Connection The effect of climate change on species is still unknown and widely debated. Scientists believe that factors such as increased droughts and the spread of a fungus may have led to the demise of the Golden Toad. The number of Golden Toads people saw declined from 1,500 to zero in such a short period of time. Scientists suspect that conditions related to climate change was the reason for their extinction. Turn the page over to learn more! Sciencenter, Ithaca, NY Page 1 www.sciencenter.org The Puzzling Golden Toad Activity Guide What’s Happening? The Golden Toad (Bufo periglenes) was an amphibian only found in areas near the Monteverde Cloud Forest Preserve in Costa Rica. This species strangely disappeared in the late 1980’s, which led to extensive studies on what caused the extinction of this species. After studying the drastic manner in which this species declined, scientists started to suspect that climate change was the reason for their extinction. Scientists began to study how stress relating to moisture, temperature, diseases and contaminants in combination with climate change could have affected the Golden Toad. -
Redescrição De Ischnocnema Holti (Amphibia: Anura: Brachycephalidae)
Redescrição de Ischnocnema holti (Amphibia: Anura: Brachycephalidae) Mariane Targino 1 & Sergio P. de Carvalho-e-Silva 2 1 Setor de Herpetologia, Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, São Cristóvão, 20940-040 Rio de Janeiro, Rio de Janeiro, Brasil. E-mail: [email protected] 2 Laboratório de Anfíbios e Répteis, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro. Caixa Postal 68044, 21944-970 Rio de Janeiro, Rio de Janeiro, Brasil. ABSTRACT. Redescription of Ischnocnema holti (Amphibia, Anura). Ischnocnema holti (Cochran, 1948) was de- scribed based on a single specimen collected in the beginning of 20th century at the Itatiaia mountain range. In this study, we present a redescription of the species based on 25 specimens (18 males and seven females) collected at the type locality. Measurements of the specimens, description of its color pattern in life, as well as aspects of its biology and reproduction are presented. Ischnocnema holti is a medium-sized species (snout-vent length from 13.5 to 31.7mm), snout shape rounded in dorsal and lateral views and digital discs well developed. Ischnocnema holti presents considerable plasticity in its morphology and coloration. This study includes I. holti in the I. lactea (Miranda-Ribeiro, 1923) group and compares it with some of its components. KEY WORDS. Brazil; Itatiaia mountain range; Ischnocnema lactea group; neotropics; taxonomy. RESUMO. Ischnocnema holti (Cochran, 1948) foi descrito com base em apenas um único indivíduo coletado no início do século XX no alto da Serra do Itatiaia. Neste trabalho é apresentada uma redescrição dessa espécie, baseada em 25 exemplares (18 machos e sete fêmeas), coletados na localidade-tipo. -
The IUCN Amphibians Initiative: a Record of the 2001-2008 Amphibian Assessment Efforts for the IUCN Red List
The IUCN Amphibians Initiative: A record of the 2001-2008 amphibian assessment efforts for the IUCN Red List Contents Introduction ..................................................................................................................................... 4 Amphibians on the IUCN Red List - Home Page ................................................................................ 5 Assessment process ......................................................................................................................... 6 Partners ................................................................................................................................................................. 6 The Central Coordinating Team ............................................................................................................................ 6 The IUCN/SSC – CI/CABS Biodiversity Assessment Unit........................................................................................ 6 An Introduction to Amphibians ................................................................................................................................. 7 Assessment methods ................................................................................................................................................ 7 1. Data Collection .................................................................................................................................................. 8 2. Data Review ................................................................................................................................................... -
Goliath Frogs Build Nests for Spawning – the Reason for Their Gigantism? Marvin Schäfera, Sedrick Junior Tsekanéb, F
JOURNAL OF NATURAL HISTORY 2019, VOL. 53, NOS. 21–22, 1263–1276 https://doi.org/10.1080/00222933.2019.1642528 Goliath frogs build nests for spawning – the reason for their gigantism? Marvin Schäfera, Sedrick Junior Tsekanéb, F. Arnaud M. Tchassemb, Sanja Drakulića,b,c, Marina Kamenib, Nono L. Gonwouob and Mark-Oliver Rödel a,b,c aMuseum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany; bFaculty of Science, Laboratory of Zoology, University of Yaoundé I, Yaoundé, Cameroon; cFrogs & Friends, Berlin, Germany ABSTRACT ARTICLE HISTORY In contrast to its popularity, astonishingly few facts have become Received 16 April 2019 known about the biology of the Goliath Frog, Conraua goliath.We Accepted 7 July 2019 herein report the so far unknown construction of nests as spawning KEYWORDS sites by this species. On the Mpoula River, Littoral District, West Amphibia; Anura; Cameroon; Cameroon we identified 19 nests along a 400 m section. Nests Conraua goliath; Conrauidae; could be classified into three types. Type 1 constitutes rock pools parental care that were cleared by the frogs from detritus and leaf-litter; type 2 constitutes existing washouts at the riverbanks that were cleared from leaf-litter and/or expanded, and type 3 were depressions dug by the frogs into gravel riverbanks. The cleaning and digging activ- ities of the frogs included removal of small to larger items, ranging from sand and leaves to larger stones. In all nest types eggs and tadpoles of C. goliath were detected. All nest types were used for egg deposition several times, and could comprise up to three distinct cohorts of tadpoles. -
Protected Area Management Plan Development - SAPO NATIONAL PARK
Technical Assistance Report Protected Area Management Plan Development - SAPO NATIONAL PARK - Sapo National Park -Vision Statement By the year 2010, a fully restored biodiversity, and well-maintained, properly managed Sapo National Park, with increased public understanding and acceptance, and improved quality of life in communities surrounding the Park. A Cooperative Accomplishment of USDA Forest Service, Forestry Development Authority and Conservation International Steve Anderson and Dennis Gordon- USDA Forest Service May 29, 2005 to June 17, 2005 - 1 - USDA Forest Service, Forestry Development Authority and Conservation International Protected Area Development Management Plan Development Technical Assistance Report Steve Anderson and Dennis Gordon 17 June 2005 Goal Provide support to the FDA, CI and FFI to review and update the Sapo NP management plan, establish a management plan template, develop a program of activities for implementing the plan, and train FDA staff in developing future management plans. Summary Week 1 – Arrived in Monrovia on 29 May and met with Forestry Development Authority (FDA) staff and our two counterpart hosts, Theo Freeman and Morris Kamara, heads of the Wildlife Conservation and Protected Area Management and Protected Area Management respectively. We decided to concentrate on the immediate implementation needs for Sapo NP rather than a revision of existing management plan. The four of us, along with Tyler Christie of Conservation International (CI), worked in the CI office on the following topics: FDA Immediate -
Golden Toad Fact Sheet
Golden Toad Fact Sheet Common Name: Golden Toad Scientific Name: Incilius periglenes, formerly Bufo periglenes Wild Status: Extinct Habitat: Cloud Forest Country: Costa Rica Shelter: Underground Life Span: Estimated 10 Years Size: 3 inches approx Details The golden toad is one of the many victims of global decline in amphibians. The causes are not well understood for amphibians or for the golden toad. Because golden toads laid many eggs in shallow pools, some speculate a drought harmed the toad population. Others believe it may be a combination of climate change, air pollution, and disease. As amphibian populations continue to decline, biologists look to the case of the golden toad as a sign of what could happen not just to toads, but any cold blooded creature sensitive to its surroundings. Cool Facts • Like many other toads, this species spent much of its life underground, waiting for the rain. • Was found only in Costa Rica in what is called a "cloud forest" due to the constant, cloudy fog. • Females were bigger than males and came in a variety of colors. Males were usually golden in color. • Unlike cane toads, the golden toads did not have poison • The last golden toad was seen in 1989. In 2004, it was considered extinct. Taxonomic Breakdown Kingdom: Animalia Phylum: Chordata Class: Amphibia Order: Anura Family: Bufonidae Genus: Incilius Species: I. periglenes Conservation & Helping Although the toads were closely examined and counted each year, scientists were not able to stop the decline of the toad, and they are considered extinct. Their average lifespan are just over 10 years, and no golden toads have been seen in decades. -
Yosemite Toad Conservation Assessment
United States Department of Agriculture YOSEMITE TOAD CONSERVATION ASSESSMENT A Collaborative Inter-Agency Project Forest Pacific Southwest R5-TP-040 January Service Region 2015 YOSEMITE TOAD CONSERVATION ASSESSMENT A Collaborative Inter-Agency Project by: USDA Forest Service California Department of Fish and Wildlife National Park Service U.S. Fish and Wildlife Service Technical Coordinators: Cathy Brown USDA Forest Service Amphibian Monitoring Team Leader Stanislaus National Forest Sonora, CA [email protected] Marc P. Hayes Washington Department of Fish and Wildlife Research Scientist Science Division, Habitat Program Olympia, WA Gregory A. Green Principal Ecologist Owl Ridge National Resource Consultants, Inc. Bothel, WA Diane C. Macfarlane USDA Forest Service Pacific Southwest Region Threatened Endangered and Sensitive Species Program Leader Vallejo, CA Amy J. Lind USDA Forest Service Tahoe and Plumas National Forests Hydroelectric Coordinator Nevada City, CA Yosemite Toad Conservation Assessment Brown et al. R5-TP-040 January 2015 YOSEMITE TOAD WORKING GROUP MEMBERS The following may be the contact information at the time of team member involvement in the assessment. Becker, Dawne Davidson, Carlos Harvey, Jim Associate Biologist Director, Associate Professor Forest Fisheries Biologist California Department of Fish and Wildlife Environmental Studies Program Humboldt-Toiyabe National Forest 407 West Line St., Room 8 College of Behavioral and Social Sciences USDA Forest Service Bishop, CA 93514 San Francisco State University 1200 Franklin Way (760) 872-1110 1600 Holloway Avenue Sparks, NV 89431 [email protected] San Francisco, CA 94132 (775) 355-5343 (415) 405-2127 [email protected] Boiano, Daniel [email protected] Aquatic Ecologist Holdeman, Steven J. Sequoia/Kings Canyon National Parks Easton, Maureen A. -
BOA5.1-2 Frog Biology, Taxonomy and Biodiversity
The Biology of Amphibians Agnes Scott College Mark Mandica Executive Director The Amphibian Foundation [email protected] 678 379 TOAD (8623) Phyllomedusidae: Agalychnis annae 5.1-2: Frog Biology, Taxonomy & Biodiversity Part 2, Neobatrachia Hylidae: Dendropsophus ebraccatus CLassification of Order: Anura † Triadobatrachus Ascaphidae Leiopelmatidae Bombinatoridae Alytidae (Discoglossidae) Pipidae Rhynophrynidae Scaphiopopidae Pelodytidae Megophryidae Pelobatidae Heleophrynidae Nasikabatrachidae Sooglossidae Calyptocephalellidae Myobatrachidae Alsodidae Batrachylidae Bufonidae Ceratophryidae Cycloramphidae Hemiphractidae Hylodidae Leptodactylidae Odontophrynidae Rhinodermatidae Telmatobiidae Allophrynidae Centrolenidae Hylidae Dendrobatidae Brachycephalidae Ceuthomantidae Craugastoridae Eleutherodactylidae Strabomantidae Arthroleptidae Hyperoliidae Breviceptidae Hemisotidae Microhylidae Ceratobatrachidae Conrauidae Micrixalidae Nyctibatrachidae Petropedetidae Phrynobatrachidae Ptychadenidae Ranidae Ranixalidae Dicroglossidae Pyxicephalidae Rhacophoridae Mantellidae A B † 3 † † † Actinopterygian Coelacanth, Tetrapodomorpha †Amniota *Gerobatrachus (Ray-fin Fishes) Lungfish (stem-tetrapods) (Reptiles, Mammals)Lepospondyls † (’frogomander’) Eocaecilia GymnophionaKaraurus Caudata Triadobatrachus 2 Anura Sub Orders Super Families (including Apoda Urodela Prosalirus †) 1 Archaeobatrachia A Hyloidea 2 Mesobatrachia B Ranoidea 1 Anura Salientia 3 Neobatrachia Batrachia Lissamphibia *Gerobatrachus may be the sister taxon Salientia Temnospondyls -
Global Amphibian Declines Houlahan Et Al
Amphibian Population Declines and Malformations Extinct, 1989 Bufo periglenes, CR Hyla regilla, OR Matthew J. Gray University of Tennessee Worldwide Amphibian Population Declines Global Amphibian Declines Houlahan et al. 2000, Nature 404:752–755 North America Western Europe 250 300 s 200 250 200 150 150 100 100 50 50 Number of Populations Number of Population 0 0 1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996 1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996 1 History of Amphibian Declines Prior 1970s: •Few extinctions; some localized die-offs Ohio Journal of Science 49:70-71 1970-mid-1980s: •Few extinctions •Localized die-offs in temperate areas associated with habitat destruction Alberta Naturalist 11:1-4 Late 80s-Now: •Increase in extinctions •Localized & regional die-offs in temperate and tropical areas; some in “pristine” areas Conservation Biology 7:355-362, 8:72-85, 10:406-413, 10:414-425, 12:106-117, 13:117-125; Biotropica 20:230-235; Nature 404:752-755 Status of Amphibian Populations United States: •1 Species Extinct (Rana fisheri) Western U.S. •10 Endangered; 7 Threatened; 8 Awaiting •CA = 6 Spp.; SE = 5 Spp.; Wyoming = 1 spp •SW = 6 Spp. (Chiracahua Leopard Frog, 80%) Puerto Rico: •3 Spp. Extinct (Golden, mottled, web-footed Coquis) 24 spp. (16 coquis) •1 Spp. of Toad; 2 Spp. Coquis 61% spp. in Caribbean Australia: •8 Spp. Extinct; 6 Spp. in Serious Decline Gastric-brooding Frogs Elevation (Discovered in ‘70s) Costa Rica: •1 Spp. Extinct (Golden toad) Pristine •Multiple in Decline Global Amphibian Distributions 2 Status of Amphibian Populations In Threat of 1/3 of amphibian species 43% in Extinction: 12% = birds, 23% = mammals decline Status of Amphibian Populations Greatest Percent (>80%) Largest number of species Status of Amphibian Populations Extinct Critically Endangered Data deficient Endangered Vulnerable Near Least Concern Threatened http://www.globalamphibians.org 3 Status of Amphibian Populations % Threaten Total EX EW CR EN VU NT LC DD ed or Order Table 1.