Implications for Clean Water Act Implementation

Total Page:16

File Type:pdf, Size:1020Kb

Implications for Clean Water Act Implementation UNIVERSITY OF CALIFORNIA Los Angeles Protecting and Restoring our Nation’s Waters: The Effects of Science, Law, and Policy on Clean Water Act Jurisdiction with a focus on the Arid West A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Environmental Science and Engineering by Forrest Brown Vanderbilt 2013 © Copyright by Forrest Brown Vanderbilt 2013 ABSTRACT OF THE DISSERTATION Protecting and Restoring our Nation’s Waters: The Effects of Science, Law, and Policy on Clean Water Act Jurisdiction with a focus on the Arid West by Forrest Brown Vanderbilt Doctor of Environmental Science and Engineering University of California, Los Angeles, 2013 Professor Richard F. Ambrose, Chair Since its initial passage in 1972, the Clean Water Act has attempted to restore and protect our Nation’s waters. The definition of ‘our Nation’s waters’ has undergone periodic debate and scrutiny as the U.S. Environmental Protection Agency, the U.S. Army Corps of Engineers, and the Supreme Court have defined and redefined the standards for determining CWA jurisdiction. The Supreme Court’s most recent set of standards, including the “significant nexus” test, appear to both increase the uncertainty in what is regulated and increase the burden of proof for determining CWA jurisdiction. The Arid West was singled out in the most recent EPA and Corps joint jurisdictional guidance as a problematic area. Focusing on the Arid West, my dissertation evaluates the CWA jurisdiction process from three perspectives: law, policy, and ii science, and explores an understanding of the past, present, and potential future path of CWA jurisdiction. I analyzed Corps jurisdictional determinations from their national database. The data showed that the Corps has reversed their trend of issuing the complex and often time intensive Approved Determination to the expeditious Preliminary Determination that affords the same protection to an aquatic resource with reduced effort, and showed that the number of determinations disclaiming jurisdiction have returned historical levels. Also, the data showed that some local Corps offices do not mirror the national trends. In exploring the current state of stream research, the data showed a parallel in the timing of the Supreme Court Cases and subsequent guidance to increases in the number of articles published. In addition, the data showed that research on Arid West streams have focused on a smaller set of functions and services as compared to all potential stream functions. Using readily available tools and peer reviewed methods, I have proposed a delineation process that would bring transparency and consistency to the Approved JD process. Data showed that these tools and methods produce meaningful results in an Arid West watershed. The current CWA jurisdictional guidance can still meet the primary objective of the Act within the current policy framework and through the incorporation of existing tools into the determination process. iii The dissertation of Forrest Brown Vanderbilt is approved. Ann E. Carlson Terri S. Hogue Philip W. Rundel Richard F. Ambrose, Committee Chair University of California, Los Angeles 2013 iv DEDICATION I dedicate my dissertation to wife, Bethany, and my son, Malcolm. v TABLE OF CONTENTS ABSTRACT OF THE DISSERTATION ................................................................................. ii LIST OF TABLES ................................................................................................................... ix LIST OF FIGURES ................................................................................................................. xi LIST OF ACRONYMS ......................................................................................................... xiii ACKNOWLEDGEMENTS ................................................................................................... xiv VITA ....................................................................................................................................... xv Chapter 1 .............................................................................................................1 Introduction ...........................................................................................................1 CWA Jurisdiction and Rapanos v. United States .................................................................. 1 Corps CWA jurisdictional implementation ........................................................................... 4 Literature Review and Scientific Tools for the JD process identified by Justice Kennedy .. 4 Objectives .............................................................................................................................. 7 References ............................................................................................................................. 9 Chapter 2 ...........................................................................................................14 Past, Present, and Future of Clean Water Act policy, legal interpretation, and guidance on defining ‘waters of the United States’ .................................................14 Introduction ......................................................................................................................... 14 Clean Water Act .................................................................................................................. 16 Clean Water Act Jurisdictional Regulation ......................................................................... 18 Supreme Court Rulings ....................................................................................................... 20 Discussion ........................................................................................................................... 35 Tables .................................................................................................................................. 38 References ........................................................................................................................... 41 Appendix A – Summary of lower court decisions post-Rapanos ....................................... 47 Appendix B – U.S. Environmental Protection Agency and U.S. Army Corps of Engineers Draft Guidance Document dated April 2011 ............................................................................ 64 Appendix C – Bibliography and relevant section from the U.S. Environmental Protection Agency and U.S. Army Corps of Engineers Draft Guidance Document dated April 2011 .... 103 Chapter 3 .........................................................................................................113 A Review of U.S. Army Corps of Engineers Clean Water Act Jurisdictional Determinations post-SWANCC through post-Rapanos: Implications for Clean Water Act Implementation .....................................................................................113 Introduction ....................................................................................................................... 113 vi Data Sources and Methods ................................................................................................ 119 Results and Discussion ...................................................................................................... 122 Corps HQ data ............................................................................................................... 122 Los Angeles and Portland Data ..................................................................................... 123 Savannah and Jacksonville ............................................................................................ 124 Charleston, Wilmington, and Baltimore ........................................................................ 126 Conclusion ......................................................................................................................... 127 Tables ................................................................................................................................ 130 Figures ............................................................................................................................... 146 References ......................................................................................................................... 161 Chapter 4 .........................................................................................................164 A review of published stream research, 1939-2010: Functions, Services, and Values, focusing on the Arid Southwest ................................................................164 Introduction ....................................................................................................................... 164 Bibliometric methods ........................................................................................................ 169 Methods and Data Sources ................................................................................................ 170 Results and Discussion ...................................................................................................... 171 Characteristics of publications ....................................................................................... 171 Distribution of Journals and Databases ......................................................................... 172 Distribution of search terms in article title, keywords, and abstract analysis
Recommended publications
  • Intermittent Rivers and Ephemeral Streams
    Intermittent Rivers and Ephemeral Streams: A Unique Biome With Important Contributions to Biodiversity and Ecosystem Services Ross Vander Vorste, University of Wisconsin La Crosse, La Crosse, WI, United States Romain Sarremejane, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom Thibault Datry, IRSTEA, UR-Riverly, Centre de Lyon-Villeurbanne, Villeurbanne, France © 2019 Elsevier Inc. All rights reserved. What Are Intermittent Rivers and Ephemeral Streams? 1 Hydrologically Diverse and Globally Abundant 1 Three-in-One: IRES Contribute to Lotic, Lentic, and Terrestrial Dynamics 2 Biogeochemical Dynamics in Intermittent Rivers and Ephemeral Streams 3 Biodiversity in Intermittent Rivers and Ephemeral Streams 4 From Microbes to Elephants, IRES Support High Biodiversity 4 Strategies for Persistence in IRES 6 Organization of Metacommunities Within IRES 6 Management of Intermittent Rivers and Ephemeral Streams 7 Ecosystem Services Provided by IRES 7 Protection and Management of IRES 7 Future of IRES and Global Change 7 Summary 8 References 9 Abstract The majority of flowing waterbodies throughout the world can be considered intermittent rivers or ephemeral streams (IRES) because at some point in time and space they stop flowing or dry. Despite their global abundance, less is known about this biome compared to perennial—permanently flowing—rivers. However, a recent surge in research has dramatically improved our understanding of how IRES function and what types of biodiversity and ecosystem services they support. A cycle of terrestrial-aquatic habitat conditions caused by the periodic drying and rewetting creates a high temporal dynamic in the biogeochemistry, biodiversity, and ecosystem services of IRES. Vast amounts of accumulated sediment, organic matter and organisms can be transported from IRES downstream to larger rivers or lakes, contributing to the global C cycle.
    [Show full text]
  • New Species of the Corumbataia Cuestae Group (Siluriformes: Loricariidae) from the Rio Tocantins Basin, with Comments on Its Phylogenetic Relationships
    Neotropical Ichthyology Original article https://doi.org/10.1590/1982-0224-2020-0060 urn:lsid:zoobank.org:pub:535A5954-0017-4BFC-950E-CCE3BD06AB22 New species of the Corumbataia cuestae group (Siluriformes: Loricariidae) from the Rio Tocantins basin, with comments on its phylogenetic relationships Correspondence: Mateus Giovanni Rocha Thimotheo1, Ricardo Cardoso Benine1, Gabriel de Souza da Costa e Silva 2 1 [email protected] Claudio Oliveira and Gabriel de Souza da Costa e Silva A new species of Corumbataia is described from Rio Maranhão, Rio Tocantins basin, central Brazil. The new species is distinguished from all congeners by the presence of a small, naked area on snout tip; by having the abdomen covered with small platelets forming a shield which reaches the lateral mid-ventral plates; by the anterior profile of the head rounded in dorsal view; by the lower lip not reaching the transversal line of the pectoral girdle; and by the presence of 28 or 29 vertebrae. High genetic divergence in mitochondrial cytochrome c oxidase subunit I (COI) further supports the validity of this new species. Our phylogenetic analysis shows a derived subclade in Corumbataia, herein named as the Corumbataia cuestae group, composed of the new species plus C. cuestae, C. tocantinensis, C. britskii, C. liliai, and C. lucianoi. This group is defined by having Submitted July 8, 2020 a conspicuous crest of hypertrophied odontodes on head; absence of the adipose Accepted November 9, 2020 fin or a single series of platelets at adipose-fin position; and anastomosis of the by Gloria Arratia infraorbital and otic sensory canals over the pterotic-supracleithrum.
    [Show full text]
  • No. 40. the System of Lunar Craters, Quadrant Ii Alice P
    NO. 40. THE SYSTEM OF LUNAR CRATERS, QUADRANT II by D. W. G. ARTHUR, ALICE P. AGNIERAY, RUTH A. HORVATH ,tl l C.A. WOOD AND C. R. CHAPMAN \_9 (_ /_) March 14, 1964 ABSTRACT The designation, diameter, position, central-peak information, and state of completeness arc listed for each discernible crater in the second lunar quadrant with a diameter exceeding 3.5 km. The catalog contains more than 2,000 items and is illustrated by a map in 11 sections. his Communication is the second part of The However, since we also have suppressed many Greek System of Lunar Craters, which is a catalog in letters used by these authorities, there was need for four parts of all craters recognizable with reasonable some care in the incorporation of new letters to certainty on photographs and having diameters avoid confusion. Accordingly, the Greek letters greater than 3.5 kilometers. Thus it is a continua- added by us are always different from those that tion of Comm. LPL No. 30 of September 1963. The have been suppressed. Observers who wish may use format is the same except for some minor changes the omitted symbols of Blagg and Miiller without to improve clarity and legibility. The information in fear of ambiguity. the text of Comm. LPL No. 30 therefore applies to The photographic coverage of the second quad- this Communication also. rant is by no means uniform in quality, and certain Some of the minor changes mentioned above phases are not well represented. Thus for small cra- have been introduced because of the particular ters in certain longitudes there are no good determi- nature of the second lunar quadrant, most of which nations of the diameters, and our values are little is covered by the dark areas Mare Imbrium and better than rough estimates.
    [Show full text]
  • Glossary Glossary
    Glossary Glossary Albedo A measure of an object’s reflectivity. A pure white reflecting surface has an albedo of 1.0 (100%). A pitch-black, nonreflecting surface has an albedo of 0.0. The Moon is a fairly dark object with a combined albedo of 0.07 (reflecting 7% of the sunlight that falls upon it). The albedo range of the lunar maria is between 0.05 and 0.08. The brighter highlands have an albedo range from 0.09 to 0.15. Anorthosite Rocks rich in the mineral feldspar, making up much of the Moon’s bright highland regions. Aperture The diameter of a telescope’s objective lens or primary mirror. Apogee The point in the Moon’s orbit where it is furthest from the Earth. At apogee, the Moon can reach a maximum distance of 406,700 km from the Earth. Apollo The manned lunar program of the United States. Between July 1969 and December 1972, six Apollo missions landed on the Moon, allowing a total of 12 astronauts to explore its surface. Asteroid A minor planet. A large solid body of rock in orbit around the Sun. Banded crater A crater that displays dusky linear tracts on its inner walls and/or floor. 250 Basalt A dark, fine-grained volcanic rock, low in silicon, with a low viscosity. Basaltic material fills many of the Moon’s major basins, especially on the near side. Glossary Basin A very large circular impact structure (usually comprising multiple concentric rings) that usually displays some degree of flooding with lava. The largest and most conspicuous lava- flooded basins on the Moon are found on the near side, and most are filled to their outer edges with mare basalts.
    [Show full text]
  • Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca
    Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca John F. Lamoreux, Meghan W. McKnight, and Rodolfo Cabrera Hernandez Occasional Paper of the IUCN Species Survival Commission No. 53 Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca John F. Lamoreux, Meghan W. McKnight, and Rodolfo Cabrera Hernandez Occasional Paper of the IUCN Species Survival Commission No. 53 The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. The views expressed in this publication do not necessarily reflect those of IUCN or other participating organizations. Published by: IUCN, Gland, Switzerland Copyright: © 2015 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational or other non-commercial purposes is authorized without prior written permission from the copyright holder provided the source is fully acknowledged. Reproduction of this publication for resale or other commercial purposes is prohibited without prior written permission of the copyright holder. Citation: Lamoreux, J. F., McKnight, M. W., and R. Cabrera Hernandez (2015). Amphibian Alliance for Zero Extinction Sites in Chiapas and Oaxaca. Gland, Switzerland: IUCN. xxiv + 320pp. ISBN: 978-2-8317-1717-3 DOI: 10.2305/IUCN.CH.2015.SSC-OP.53.en Cover photographs: Totontepec landscape; new Plectrohyla species, Ixalotriton niger, Concepción Pápalo, Thorius minutissimus, Craugastor pozo (panels, left to right) Back cover photograph: Collecting in Chamula, Chiapas Photo credits: The cover photographs were taken by the authors under grant agreements with the two main project funders: NGS and CEPF.
    [Show full text]
  • Is Extraterrestrial Organic Matter Relevant to the Origin of Life on Earth?
    IS EXTRATERRESTRIAL ORGANIC MATTER RELEVANT TO THE ORIGIN OF LIFE ON EARTH? D. C. B. WHITTET Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, U.S.A. (Received 19 August 1996) Abstract. I review the relative importance of internal and external sources of prebiotic molecules on Earth at the time of life's origin 3.7 Gyr ago. The ef®ciency of synthesis in the Earth's atmosphere was critically dependent on its oxidation state. If the early atmosphere was non-reducing and CO2- dominated, external delivery might have been the dominant source. Interplanetary dust grains and micrometeorites currently deliver carbonaceous matter to the Earth's surface at a rate of 3 5 7 10 kg/yr (equivalent to a biomass in 2 Gyr), but this may have been as high as 5 10 kg/yr (a biomass in only 10 Myr) during the epoch of late bombardment. Much of the incoming material is in the form of chemically inactive kerogens and amorphous carbon; but if the Earth once had a dense (10-bar) atmosphere, small comets rich in a variety of prebiotic molecules may have been suf®ciently air-braked to land non-destructively. Lingering uncertainties regarding the impact history of the Earth and the density and composition of its early atmosphere limit our ability to draw ®rm conclusions. 1. Introduction In at least one sense, a connection between the Universe at large and life in our small corner of it is inevitable. The hydrogen, carbon, nitrogen, oxygen, and other elements that make up our bodies and other living things were created billions of years ago in the interiors of stars and, in the case of hydrogen, in the the Big Bang itself (see Trimble, 1997, in this volume for an eloquent review).
    [Show full text]
  • For Review Only
    Page 63 of 123 Evolution Moen et al. 1 1 2 3 4 5 Appendix S1: Supplementary data 6 7 Table S1 . Estimates of local species composition at 39 sites in Middle America based on data summarized by Duellman 8 9 10 (2001). Locality numbers correspond to Table 2. References for body size and larval habitat data are found in Table S2. 11 12 Locality and elevation Body Larval Subclade within Middle Species present Hylid clade 13 (country, state, specific location)For Reviewsize Only habitat American clade 14 15 16 1) Mexico, Sonora, Alamos; 597 m Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 17 Smilisca baudinii 76.0 pond Middle American Smilisca clade 18 Smilisca fodiens 62.6 pond Middle American Smilisca clade 19 20 21 2) Mexico, Sinaloa, Mazatlan; 9 m Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 22 Smilisca baudinii 76.0 pond Middle American Smilisca clade 23 Smilisca fodiens 62.6 pond Middle American Smilisca clade 24 Tlalocohyla smithii 26.0 pond Middle American Tlalocohyla 25 Diaglena spatulata 85.9 pond Middle American Smilisca clade 26 27 28 3) Mexico, Durango, El Salto; 2603 Hyla eximia 35.0 pond Middle American Hyla 29 m 30 31 32 4) Mexico, Jalisco, Chamela; 11 m Dendropsophus sartori 26.0 pond Dendropsophus 33 Exerodonta smaragdina 26.0 stream Middle American Plectrohyla clade 34 Pachymedusa dacnicolor 82.6 pond Phyllomedusinae 35 Smilisca baudinii 76.0 pond Middle American Smilisca clade 36 Smilisca fodiens 62.6 pond Middle American Smilisca clade 37 38 Tlalocohyla smithii 26.0 pond Middle American Tlalocohyla 39 Diaglena spatulata 85.9 pond Middle American Smilisca clade 40 Trachycephalus venulosus 101.0 pond Lophiohylini 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Evolution Page 64 of 123 Moen et al.
    [Show full text]
  • Evaluating the Monophyly and Biogeography of Cryptantha (Boraginaceae)
    Systematic Botany (2018), 43(1): pp. 53–76 © Copyright 2018 by the American Society of Plant Taxonomists DOI 10.1600/036364418X696978 Date of publication April 18, 2018 Evaluating the Monophyly and Biogeography of Cryptantha (Boraginaceae) Makenzie E. Mabry1,2 and Michael G. Simpson1 1Department of Biology, San Diego State University, San Diego, California 92182, U. S. A. 2Current address: Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, Missouri 65211, U. S. A. Authors for correspondence ([email protected]; [email protected]) Abstract—Cryptantha, an herbaceous plant genus of the Boraginaceae, subtribe Amsinckiinae, has an American amphitropical disjunct distri- bution, found in western North America and western South America, but not in the intervening tropics. In a previous study, Cryptantha was found to be polyphyletic and was split into five genera, including a weakly supported, potentially non-monophyletic Cryptantha s. s. In this and subsequent studies of the Amsinckiinae, interrelationships within Cryptantha were generally not strongly supported and sample size was generally low. Here we analyze a greatly increased sampling of Cryptantha taxa using high-throughput, genome skimming data, in which we obtained the complete ribosomal cistron, the nearly complete chloroplast genome, and twenty-three mitochondrial genes. Our analyses have allowed for inference of clades within this complex with strong support. The occurrence of a non-monophyletic Cryptantha is confirmed, with three major clades obtained, termed here the Johnstonella/Albidae clade, the Maritimae clade, and a large Cryptantha core clade, each strongly supported as monophyletic. From these phylogenomic analyses, we assess the classification, character evolution, and phylogeographic history that elucidates the current amphitropical distribution of the group.
    [Show full text]
  • Correlates of Eye Colour and Pattern in Mantellid Frogs
    SALAMANDRA 49(1) 7–17 30Correlates April 2013 of eyeISSN colour 0036–3375 and pattern in mantellid frogs Correlates of eye colour and pattern in mantellid frogs Felix Amat 1, Katharina C. Wollenberg 2,3 & Miguel Vences 4 1) Àrea d‘Herpetologia, Museu de Granollers-Ciències Naturals, Francesc Macià 51, 08400 Granollers, Catalonia, Spain 2) Department of Biology, School of Science, Engineering and Mathematics, Bethune-Cookman University, 640 Dr. Mary McLeod Bethune Blvd., Daytona Beach, FL 32114, USA 3) Department of Biogeography, Trier University, Universitätsring 15, 54286 Trier, Germany 4) Zoological Institute, Division of Evolutionary Biology, Technical University of Braunschweig, Spielmannstr. 8, 38106 Braunschweig, Germany Corresponding author: Miguel Vences, e-mail: [email protected] Manuscript received: 18 March 2013 Abstract. With more than 250 species, the Mantellidae is the most species-rich family of frogs in Madagascar. These frogs are highly diversified in morphology, ecology and natural history. Based on a molecular phylogeny of 248 mantellids, we here examine the distribution of three characters reflecting the diversity of eye colouration and two characters of head colouration along the mantellid tree, and their correlation with the general ecology and habitat use of these frogs. We use Bayesian stochastic character mapping, character association tests and concentrated changes tests of correlated evolu- tion of these variables. We confirm previously formulated hypotheses of eye colour pattern being significantly correlated with ecology and habits, with three main character associations: many tree frogs of the genus Boophis have a bright col- oured iris, often with annular elements and a blue-coloured iris periphery (sclera); terrestrial leaf-litter dwellers have an iris horizontally divided into an upper light and lower dark part; and diurnal, terrestrial and aposematic Mantella frogs have a uniformly black iris.
    [Show full text]
  • Geological Survey of Alabama Calibration of The
    GEOLOGICAL SURVEY OF ALABAMA Berry H. (Nick) Tew, Jr. State Geologist WATER INVESTIGATIONS PROGRAM CALIBRATION OF THE INDEX OF BIOTIC INTEGRITY FOR THE SOUTHERN PLAINS ICHTHYOREGION IN ALABAMA OPEN-FILE REPORT 0908 by Patrick E. O'Neil and Thomas E. Shepard Prepared in cooperation with the Alabama Department of Environmental Management and the Alabama Department of Conservation and Natural Resources Tuscaloosa, Alabama 2009 TABLE OF CONTENTS Abstract ............................................................ 1 Introduction.......................................................... 1 Acknowledgments .................................................... 6 Objectives........................................................... 7 Study area .......................................................... 7 Southern Plains ichthyoregion ...................................... 7 Methods ............................................................ 8 IBI sample collection ............................................. 8 Habitat measures............................................... 10 Habitat metrics ........................................... 12 The human disturbance gradient ................................... 15 IBI metrics and scoring criteria..................................... 19 Designation of guilds....................................... 20 Results and discussion................................................ 22 Sampling sites and collection results . 22 Selection and scoring of Southern Plains IBI metrics . 41 1. Number of native species ................................
    [Show full text]
  • Multilocus Molecular Phylogeny of the Suckermouth Armored Catfishes
    Molecular Phylogenetics and Evolution xxx (2014) xxx–xxx Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Multilocus molecular phylogeny of the suckermouth armored catfishes (Siluriformes: Loricariidae) with a focus on subfamily Hypostominae ⇑ Nathan K. Lujan a,b, , Jonathan W. Armbruster c, Nathan R. Lovejoy d, Hernán López-Fernández a,b a Department of Natural History, Royal Ontario Museum, 100 Queen’s Park, Toronto, Ontario M5S 2C6, Canada b Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada c Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA d Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario M1C 1A4, Canada article info abstract Article history: The Neotropical catfish family Loricariidae is the fifth most species-rich vertebrate family on Earth, with Received 4 July 2014 over 800 valid species. The Hypostominae is its most species-rich, geographically widespread, and eco- Revised 15 August 2014 morphologically diverse subfamily. Here, we provide a comprehensive molecular phylogenetic reap- Accepted 20 August 2014 praisal of genus-level relationships in the Hypostominae based on our sequencing and analysis of two Available online xxxx mitochondrial and three nuclear loci (4293 bp total). Our most striking large-scale systematic discovery was that the tribe Hypostomini, which has traditionally been recognized as sister to tribe Ancistrini based Keywords: on morphological data, was nested within Ancistrini. This required recognition of seven additional tribe- Neotropics level clades: the Chaetostoma Clade, the Pseudancistrus Clade, the Lithoxus Clade, the ‘Pseudancistrus’ Guiana Shield Andes Mountains Clade, the Acanthicus Clade, the Hemiancistrus Clade, and the Peckoltia Clade.
    [Show full text]
  • Louisiana's Animal Species of Greatest Conservation Need (SGCN)
    Louisiana's Animal Species of Greatest Conservation Need (SGCN) ‐ Rare, Threatened, and Endangered Animals ‐ 2020 MOLLUSKS Common Name Scientific Name G‐Rank S‐Rank Federal Status State Status Mucket Actinonaias ligamentina G5 S1 Rayed Creekshell Anodontoides radiatus G3 S2 Western Fanshell Cyprogenia aberti G2G3Q SH Butterfly Ellipsaria lineolata G4G5 S1 Elephant‐ear Elliptio crassidens G5 S3 Spike Elliptio dilatata G5 S2S3 Texas Pigtoe Fusconaia askewi G2G3 S3 Ebonyshell Fusconaia ebena G4G5 S3 Round Pearlshell Glebula rotundata G4G5 S4 Pink Mucket Lampsilis abrupta G2 S1 Endangered Endangered Plain Pocketbook Lampsilis cardium G5 S1 Southern Pocketbook Lampsilis ornata G5 S3 Sandbank Pocketbook Lampsilis satura G2 S2 Fatmucket Lampsilis siliquoidea G5 S2 White Heelsplitter Lasmigona complanata G5 S1 Black Sandshell Ligumia recta G4G5 S1 Louisiana Pearlshell Margaritifera hembeli G1 S1 Threatened Threatened Southern Hickorynut Obovaria jacksoniana G2 S1S2 Hickorynut Obovaria olivaria G4 S1 Alabama Hickorynut Obovaria unicolor G3 S1 Mississippi Pigtoe Pleurobema beadleianum G3 S2 Louisiana Pigtoe Pleurobema riddellii G1G2 S1S2 Pyramid Pigtoe Pleurobema rubrum G2G3 S2 Texas Heelsplitter Potamilus amphichaenus G1G2 SH Fat Pocketbook Potamilus capax G2 S1 Endangered Endangered Inflated Heelsplitter Potamilus inflatus G1G2Q S1 Threatened Threatened Ouachita Kidneyshell Ptychobranchus occidentalis G3G4 S1 Rabbitsfoot Quadrula cylindrica G3G4 S1 Threatened Threatened Monkeyface Quadrula metanevra G4 S1 Southern Creekmussel Strophitus subvexus
    [Show full text]