Preliminary Evaluation of Potential Site-Specific Zinc and Cadmium Standards for the Upper Arkansas River, Segments 2B and 2C Technical Memorandum

Total Page:16

File Type:pdf, Size:1020Kb

Preliminary Evaluation of Potential Site-Specific Zinc and Cadmium Standards for the Upper Arkansas River, Segments 2B and 2C Technical Memorandum SPS!IS Document ID 1052370 GEI \X';itcr ResGi.irct.-i Lnvironniental jjiel PRELIMINARY Lxtilogical Services EVALUATION OF POTENTIAL SITE-SPECIFIC ZINC AND CADMIUM STANDARDS FOR THE UPPER ARKANSAS RIVER, SEGMENTS 2B AND 2C TECHNICAL MEMORANDUM Submitted to: Resurrection Mining Company Submitted by: GEI Consultants, Inc./ Chadwick Ecological Division 5575 South Sycamore Street, Suite 101 Littleton, Colorado 80120 September 2006 Project 062510 Iff!-' PRELIMINARY EVALUATION OF POTENTIAL SITE-SPECIFIC ZINC AND CADMIUM STANDARDS FOR THE UPPER ARKANSAS RIVER, SEGMENTS 2B AND 2C TECHNICAL MEMORANDUM Submitted to: Resurrection Mining Company Submitted by: GEI Consultants, Inc./ Chadwick Ecological Division 5575 South Sycamore Street, Suite 101 Littleton, Colorado 80120 September 2006 Project 062510 Steven Canton Project Manager Table of Contents Section 1 - Background 3 Section 2 - Determination of the Appropriate Residential Fauna 4 Section 3 - Approaches to the Development of Site-Specific Standards 8 3.1 Potential Site-Specific Acute and Chronic Criteria for Zinc 8 3.2 Potential Site-Specific Acute and Chronic Standards for Cadmium 17 3.3 Proposed Site-Specific Zinc and Cadmium Standards 20 Section 4 - References 22 List of Tables Table I General macroinvertebrate groups identified from benthic samples collected spring and fall (2000-2005) from the Upper Arkansas River, Segments 2b and 2c. Table 2 New acute and chronic zinc data from the literature review included in CEC et al. Table 3 Updated acute toxicity database for zinc, with genus mean acute values (GMAV) and species mean acute values (SMAV) ranked from least sensitive to most sensitive genus (all normalized to hardness = 50 mg/L by updated slope = 0.8537). Table 4 Summary of current Colorado table value standards (TVS) and updated zinc criteria at varying hardness levels using updated toxicity database, revised pooled-hardness slope, and updated acute-chronic ratio. Table 5 Site-specific acute zinc toxicity databases for the Upper Arkansas River, Segment 2b and Segment 2c. Table 6 Recalculation of the acute and chronic site-specific zinc standard for Segment 2b of the upper Arkansas River (N = 26 genera, R = sensitivity rank in database). Table 7 Colorado chronic cadmium loxicity database ranked by genus mean chronic values (GMCV) normalized to hardness = 50 mg/L as CaCO3 , with the chronic toxicity hardness slope (0.7998). Table 8 Updated cadmium acute-chronic ratio from CEC (2004c). Only bold values were used in the final acute-chronic ratio (FACR) calculation. Table 9 Summary of existing Colorado TVS and proposed site-specific zinc and cadmium standards for Segments 2b and 2c of the upper Arkansas River at varying hardness levels. All values are u.g dissolved zinc or cadmium/L. 0625ID I l-OV-05 Preliminary I-v;iluation of PolcntiaJ Site-Spec September 2006 List of Figures Figure 1 The relationship between the species mean acute values (SMAV) and species mean acute-chronic ratios (SMACR) (log-log scale) for cadmium. List of Appendices Appendix A Benthic Macroinvertebrate Summary Appendix B Upper Arkansas River, Segments 2b and 2c 052510 I Ml'Mtt Preliminary EvaJualion of Potential Siie-Spec September 2006 Section 1 - Background At the request of Resurrection Mining Co., GEI Consultants, Inc./Chadwick Ecological Division (GEI/CED) has evaluated the potential for deriving site-specific standards, in the form of hardness based equations, for zinc and cadmium for the Upper Arkansas River. These potential site-specific standards would be for Segments 2b, and 2c of the Upper Arkansas (CDPHE 2006) representing the first two segments downstream of California Gulch. Segment 2b includes the section of the upper Arkansas River from a point immediately upstream of the confluence with California Gulch to a point immediately upstream of the confluence with the Lake Fork. Segment 2c includes the section of the upper Arkansas River from immediately upstream of the confluence with the Lake Fork to a point immediately upstream the confluence with Lake Creek. Both segments presently have temporary modifications for zinc (270 ug/L and 250 ug/L, respectively), while Segment 2b also has a temporary modification for cadmium (1.3 ug/L). Temporary modifications tor these two segments expire December 2007. While the Upper Arkansas River is classified as a cold-water, aquatic life stream, "aquatic life" is a broad designation. It is important to more appropriately characterize the aquatic life expected to be present (i.e., characterize uses that can be attained) for a specific stream segment to ensure that any proposed standards are protective of that expected "aquatic life" (Michael and Moore 1997). As such, the proposed site-specific standards derived in this effort took into consideration a number of factors, including: 1. Use of results of long-term field sampling of available habitat, fish, and benthic invertebrate communities to determine potential resident species in these segments, 2. Use of the zinc and cadmium toxicity databases underlying the current Colorado table value standards (TVS), 3. Use of more recent data, resulting in a further update of the Colorado zinc toxicity database, including unpublished data from the Colorado Division of Wildlife (CDOW), and 4. Use of the USEPA recalculation procedure for water quality criteria (USEPA 1994). ()f)2MO 1 MW-05 Preliminary Evaluation of Potential Site-Spec September 2006 Section 2 - Determination of the Appropriate Residential Fauna Before beginning a recalculation by deletion of non-resident taxa, one must first determine resident and potentially resident fauna for the waterbody in question. The upper Arkansas River Segments 2b and 2c provide adequate habitat for benthic macroinvertebrates and maintenance of coldwater fish communities. This has been documented with extensive biological monitoring conducted on behalf of Resurrection Mining Co., from 1994 to present (CEC 2006). These efforts have established historical resident benthic macroinvertebrate and fish species at various stations along the upper Arkansas River from the confluence of the East Fork to downstream of the confluence with Empire Gulch. The analysis in this report specifically focuses on the more recent biological data collected 2000-2005 from Segments 2b and 2c of the upper Arkansas River. Sampling sites in these segments include AR-3a and AR3b for Segment 2b and AR-4 and AR-5 (and additional fish sampling sites of the Colorado Division of Wildlife) for Segment 2c. Data collected from the sampling site immediately upstream of California Gulch (AR-2) were also taken into consideration for the determination of potentially resident species of Segments 2b and 2c that may not have been present historically due to water quality limitations. All sampling sites are described by CEC (2006). For species that were not specifically sampled for in the long-term monitoring program (e.g. zooplankton, bryozoans, ostracods), the potential for residence was determined from analyses of appropriate habitat and literature reviews. Because Segment 2 of the Upper Arkansas River is a high altitude mountain stream, several organisms included in the updated Colorado zinc toxicity database would potentially not be expected to occur. For example, warm water fish would not be expected to occur in Segments 2b or 2c of the upper Arkansas River. In addition, based on habitat preferences and known distributions, zooplankton would not be expected to inhabit these streams as "resident" populations. The potential absence (or presence) of this taxonomic group can be important, as they often represent sensitive taxa that can drive the final criteria for a particular metal. Further discussions of these groups follow. Planklonic Microinverlebrales - Despite their affinity for lentic (ponds, lakes) habitats, zooplankton, including cladocerans, are periodically observed in lotic (stream) systems. Many of these organisms are "accidentals," washed out of an upstream or off-channel lake, pond, or reservoir, with no means of sustaining a population within the stream system without the contribution of this downstream drift from the source population. 0625IO I I-O'MIS Preliminary Kvidualion of Potential Site-Spec September 2006 For example, Chandler (1937) studied the persistence of plankton drifting from three Michigan lakes into three low gradient, slow flowing rivers. He determined that plankton drifting into the rivers were rapidly eliminated, with Crustacea (which includes cladocerans) and Rotifera being the most quickly removed, having a pronounced decrease in density within a half mile and often within a few meters of the lake. These rates of removal are similar to results reported by Ward (1975), which determined that zooplankton, cladocerans in particular, are fairly rapidly removed from lotic systems below their lentic source. This pattern ofcladoceran removal from lotic habitats downstream of lentic "donor" habitats has been well documented (Novotny and Hoyt 1982, Phillips 1995). Hynes (1970) concluded that zooplankton can maintain themselves against only minimal velocities of a few millimeters/second, and that swiftly flowing systems would quickly eliminate any true zooplankton. Thorp et al. (1994) studied the zooplankton community of the Ohio River, and determined that the density of plankton in the river was negatively correlated with river velocity and was probably physically controlled. In a study of the Illinois River and its tributaries in Arkansas, Brown el al. (1989) found cladocerans comprised
Recommended publications
  • 2008 Annual Report
    Document ID #P113359 Report covers work performed under BPA contract #26763 Report was completed under BPA contract #34772 REPORT ON THE PREDATION INDEX, PREDATOR CONTROL FISHERIES, AND PROGRAM EVALUATION FOR THE COLUMBIA RIVER BASIN EXPERIMENTAL NORTHERN PIKEMINNOW MANAGEMENT PROGRAM 2008 ANNUAL REPORT Prepared by: Russell Porter Pacific States Marine Fisheries Commission In Cooperation with: Oregon Department of Fish and Wildlife Washington Department of Fish and Wildlife U.S. Department of Agriculture Prepared for: U.S. Department of Energy Bonneville Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208-3621 Project Number 199007700 Contract Number 00026763 Table of Contents Executive Summary 5 Report A – Sport Reward Fishery in the Columbia and Snake Rivers 10 Abstract 11 Introduction 12 Methods of Operation 13 Fishery Operation 13 Boundaries and Season 13 Registration Stations 14 Reward System 14 Angler Sampling 15 Returning Anglers 16 Non-Returning Anglers 16 Northern Pikeminnow Handling Procedures 17 Biological Sampling 17 PIT Tag Detection 17 Northern Pikeminnow Processing 18 Results and Discussion 18 Northern Pikeminnow Harvest 18 Harvest by Week 19 Harvest by Fishing Location 20 Harvest by Registration Station 21 Harvest by Species/Incidental Catch 22 Angler Effort 24 Effort by Week 25 Effort by Fishing Location 27 Effort by Registration Station 27 Catch Per Angler Day (CPUE) 28 CPUE by Week 29 CPUE by Fishing Location 30 CPUE by Registration Station 30 Angler Totals 31 Tag Recovery 34 Northern
    [Show full text]
  • Development of a System-Wide Predator Control Program: Northern Squawfish Management Program
    Development of a System-wide Predator Control Program Northern Squawfish Management Program - Implementation Annual Report 1997 October 1998 DOE/BP-24514-8 This Document should be cited as follows: Young, Franklin, "Development of a System-wide Predator Control Program; Northern Squawfish Management Program - Implementation", 1997 Annual Report, Project No. 199007700, 100 electronic pages, (BPA Report DOE/BP-24514-8) Bonneville Power Administration P.O. Box 3621 Portland, OR 97208 This report was funded by the Bonneville Power Administration (BPA), U.S. Department of Energy, as part of BPA's program to protect, mitigate, and enhance fish and wildlife affected by the development and operation of hydroelectric facilities on the Columbia River and its tributaries. The views in this report are the author's and do not necessarily represent the views of BPA. DEVELOPMENT OF A SYSTEMWIDE PREDATOR CONTROL PROGRAM: STEPWISE IMPLEMENTATION OF A PREDATION INDEX, PREDATOR CONTROL FISHERIES, AND EVALUATION PLAN IN THE COLUMBIA RIVER BASIN SECTION I: IMPLEMENTATION 1997 ANNUAL REPORT Prepared by: Franklin R. Young Columbia Basin Fish and Wildlife Authority In Cooperation With Nez Perce Tribe of Idaho Oregon Department of Fish and Wildlife Washington Department of Fish and Wildlife Pacific States Marine Fisheries Commission Columbia River Inter-tribal Fish Commission Confederated Tribes of the Umatilla Indian Reservation Confederated Tribes of the Warm Springs Reservation of Oregon Confederated Tribes and Bands of the Yakama Indian Reservation Prepared
    [Show full text]
  • Diversity of Alien Macroinvertebrate Species in Serbian Waters
    water Article Diversity of Alien Macroinvertebrate Species in Serbian Waters Katarina Zori´c* , Ana Atanackovi´c,Jelena Tomovi´c,Božica Vasiljevi´c,Bojana Tubi´c and Momir Paunovi´c Department for Hydroecology and Water Protection, Institute for Biological Research “Siniša Stankovi´c”—NationalInstitute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia; [email protected] (A.A.); [email protected] (J.T.); [email protected] (B.V.); [email protected] (B.T.); [email protected] (M.P.) * Correspondence: [email protected] Received: 29 September 2020; Accepted: 7 December 2020; Published: 15 December 2020 Abstract: This article provides the first comprehensive list of alien macroinvertebrate species registered and/or established in aquatic ecosystems in Serbia as a potential threat to native biodiversity. The list comprised field investigations, articles, grey literature, and unpublished data. Twenty-nine species of macroinvertebrates have been recorded since 1942, with a domination of the Ponto-Caspian faunistic elements. The majority of recorded species have broad distribution and are naturalized in the waters of Serbia, while occasional or single findings of seven taxa indicate that these species have failed to form populations. Presented results clearly show that the Danube is the main corridor for the introduction and spread of non-native species into Serbia. Keywords: Serbia; inland waters; allochthonous species; introduction 1. Introduction The Water Framework Directive (WFD) [1] represents key regulation and one of the most important documents in the European Union water legislation since it was adopted in 2000.
    [Show full text]
  • Rough Fish”: Paradigm Shift in the Conservation of Native Fishes Andrew L
    PERSPECTIVE Goodbye to “Rough Fish”: Paradigm Shift in the Conservation of Native Fishes Andrew L. Rypel | University of California, Davis, Department of Wildlife, Fish and Conservation Biology, 1 Shields Ave, Davis, CA 95616 | University of California, Davis, Center for Watershed Sciences, Davis, CA. E-mail: [email protected] Parsa Saffarinia | University of California, Davis, Department of Wildlife, Fish and Conservation Biology, Davis, CA Caryn C. Vaughn | University of Oklahoma, Oklahoma Biological Survey and Department of Biology, Norman, OK Larry Nesper | University of Wisconsin–Madison, Department of Anthropology, Madison, WI Katherine O’Reilly | University of Notre Dame, Department of Biological Sciences, Notre Dame, IN Christine A. Parisek | University of California, Davis, Center for Watershed Sciences, Davis, CA | University of California, Davis, Department of Wildlife, Fish and Conservation Biology, Davis, CA | The Nature Conservancy, Science Communications, Boise, ID Peter B. Moyle | University of California, Davis, Center for Watershed Sciences, Davis, CA Nann A. Fangue | University of California, Davis, Department of Wildlife, Fish and Conservation Biology, Davis, CA Miranda Bell- Tilcock | University of California, Davis, Center for Watershed Sciences, Davis, CA David Ayers | University of California, Davis, Center for Watershed Sciences, Davis, CA | University of California, Davis, Department of Wildlife, Fish and Conservation Biology, Davis, CA Solomon R. David | Nicholls State University, Department of Biological Sciences, Thibodaux, LA While sometimes difficult to admit, perspectives of European and white males have overwhelmingly dominated fisheries science and management in the USA. This dynamic is exemplified by bias against “rough fish”— a pejorative ascribing low- to- zero value for countless native fishes. One product of this bias is that biologists have ironically worked against conservation of diverse fishes for over a century, and these problems persist today.
    [Show full text]
  • Burner, L. C, J. A. North, R. A. Farr, and T. A. Rien. 2000
    WHITE STURGEON MITIGATIONMITIGATION AND RESTORATIORESTORATIONN IN THE COLUMBIA ANDAND SNAKE RIVERS UPSTREAUPSTREAMM FROM BONNEVILLE DADAM.M. ANNUAL PROGRESS REPORT APRIL 1998 - MARCH 1999 Edited by: David L. Ward Oregon Department of Fish and Wildlife In Cooperation With: Washington Department of Fish and Wildlife U.S. Geological Survey Biological Resources Division U.S. Fish and Wildlife Service Columbia River Inter-Tribal Fish Commission University of Idaho Prepared For: U.S. Department of Energy Bonneville Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208-3621 Project Number 86-50 Contract Number DE-AI79-86BP63584 CONTENTS Page EXECUTIVE SUMMARY by David L. Ward 3 REPORT A. Evaluate the success of developing and implementing a management plan for enhancing production of white sturgeon in reservoirs between Bonneville and McNary dams. by Lisa C. Burner, John A. North, Ruth A. Farr, and Thomas A. Rien 6 REPORT B. Evaluate the success of developing and implementing a management plan for white sturgeon in reservoirs between Bonneville and McNary dams in enhancing production. Describe the life history and population dynamics of subadult and adult white sturgeon upstream of McNary Dam and downstream from Bonneville Dam. by John D. DeVore, Brad W. James, Dennis R. Gilliland, and Brad J. Cady 41 REPORT C. Describe reproduction and early life history characteristics of white sturgeon populations in the Columbia River between Bonneville and Priest Rapids dams. Define habitat requirements for spawning and rearing white sturgeons and quantify the extent of habitat available in the Columbia River between Bonneville and Priest Rapids dams. by Kevin M. Kappenman, Darren G.
    [Show full text]
  • Molecular Confirmation of the North American Leech Placobdella Ornata (Verrill, 1872) (Hirudinida: Glossiphoniidae) in Europe
    BioInvasions Records (2015) Volume 4, Issue 3: 185–188 Open Access doi: http://dx.doi.org/10.3391/bir.2015.4.3.05 © 2015 The Author(s). Journal compilation © 2015 REABIC Rapid Communication Molecular confirmation of the North American leech Placobdella ornata (Verrill, 1872) (Hirudinida: Glossiphoniidae) in Europe Jan Soors1*, Joost Mertens2, William E. Moser3, Dennis J. Richardson4, Charlotte I. Hammond4 and Eric A. Lazo-Wasem5 1Research Institute for Nature and Forest, Kliniekstraat 25, 1070 Brussels, Belgium 2Vlaamse Milieumaatschappij (VMM), Raymonde de Larochelaan 1, 9051 Sint-Denijs-Westrem, Belgium 3Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology, Museum Support Center MRC 534, 4210 Silver Hill Road, Suitland, MD 20746 USA 4School of Biological Sciences, Quinnipiac University, 275 Mt. Carmel Avenue, Hamden, Connecticut 06518 USA 5Division of Invertebrate Zoology, Peabody Museum of Natural History, Yale University, P.O. Box 208118, New Haven, Connecticut 06520 USA E-mail: [email protected] (JS), [email protected] (JM), [email protected] (WEM), [email protected] (DJR), [email protected] (CIH), [email protected] (EALW) *Corresponding author Received: 28 January 2015 / Accepted: 15 May 2015 / Published online: 12 June 2015 Handling editor: Vadim Panov Abstract Specimens of the North American leech, Placobdella ornata (Verrill, 1872) were confirmed from the Donkmeer, a freshwater lake in the province of East Flanders, Belgium, by morphological and molecular analysis. Leech specimens from Belgium were morphologically consistent with the syntype series and description of P. ornata by Verrill (1872). Molecular comparison of the Belgian specimens to specimens of P. ornata from the type locality (New Haven, Connecticut, USA) using the cytochrome c oxidase subunit I (COI) gene revealed a similarity of 99.5%.
    [Show full text]
  • Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin
    DEVELOPMENT OF A SYSTEM-WIDE PREDATOR CONTROL PROGRAM: STEPWISE IMPLEMENTATION OF A PREDATION INDEX, PREDATOR CONTROL FISHERIES, AND EVALUATION PLAN IN THE COLUMBIA RIVER BASIN 2004 ANNUAL REPORT Prepared by: Russell Porter Pacific States Marine Fisheries Commission In Cooperation with: Oregon Department of Fish and Wildlife Washington Department of Fish and Wildlife Prepared for: U.S. Department of Energy Bonneville Power Administration Environment, Fish and Wildlife P.O. Box 3621 Portland, OR 97208-3621 Project Number 199007700 Contract Number 00004477 TABLE OF CONTENTS Page EXECUTIVE SUMMARY 4 REPORT A 9 Acknowledgments 10 Abstract . 11 Introduction 12 Methods Of Operation 13 Fishery Operation Boundaries And Season. 13 Registration Stations 13 Reward System . 14 Angler Sampling 15 Returning Anglers . 16 Non Returning Anglers . 16 Northern Pikeminnow Handling Procedures Biological Sampling 16 Pit Tag Detection 17 Northern Pikeminnow Processing. 17 Results And Discussion 18 Northern Pikeminnow Harvest . 18 Incidental Catch/Harvest By Species 21 Returning Anglers. 21 Non-Returning Angler Catch And Harvest Estimates. 22 Fork Length Data. 24 Angler Effort. 24 Catch Per Angler Day . 27 Angler Totals. 30 Tag Recovery. 32 Summary 35 Recommendations For The 2005 Season. 36 References 37 Appendices. 40 i REPORT B 42 Introduction 43 Catch And Payments 43 Tagged Fish Payments 43 Accounting 43 2003 Sport Reward Payments Summary 44 REPORT C 45 Summary 46 Introduction 49 Methods 49 Fishery Evaluation, Predation Estimates, Tag Loss, And Age Validation 49 Field And Laboratory Procedures 49 Data Analysis 51 Biological Evaluation 54 Field And Laboratory Procedures 54 Data Analysis 55 Results 57 Fishery Evaluation, Predation Estimates, Tag Loss, And Age Validation 57 Biological Evaluation 65 Discussion 82 Acknowledgments 95 References 96 Appendix A.
    [Show full text]
  • Acipenser Brevirostrum
    AR-405 BIOLOGICAL ASSESSMENT OF SHORTNOSE STURGEON Acipenser brevirostrum Prepared by the Shortnose Sturgeon Status Review Team for the National Marine Fisheries Service National Oceanic and Atmospheric Administration November 1, 2010 Acknowledgements i The biological review of shortnose sturgeon was conducted by a team of scientists from state and Federal natural resource agencies that manage and conduct research on shortnose sturgeon along their range of the United States east coast. This review was dependent on the expertise of this status review team and from information obtained from scientific literature and data provided by various other state and Federal agencies and individuals. In addition to the biologists who contributed to this report (noted below), the Shortnose Stugeon Status Review Team would like to acknowledge the contributions of Mary Colligan, Julie Crocker, Michael Dadswell, Kim Damon-Randall, Michael Erwin, Amanda Frick, Jeff Guyon, Robert Hoffman, Kristen Koyama, Christine Lipsky, Sarah Laporte, Sean McDermott, Steve Mierzykowski, Wesley Patrick, Pat Scida, Tim Sheehan, and Mary Tshikaya. The Status Review Team would also like to thank the peer reviewers, Dr. Mark Bain, Dr. Matthew Litvak, Dr. David Secor, and Dr. John Waldman for their helpful comments and suggestions. Finally, the SRT is indebted to Jessica Pruden who greatly assisted the team in finding the energy to finalize the review – her continued support and encouragement was invaluable. Due to some of the similarities between shortnose and Atlantic sturgeon life history strategies, this document includes text that was taken directly from the 2007 Atlantic Sturgeon Status Review Report (ASSRT 2007), with consent from the authors, to expedite the writing process.
    [Show full text]
  • Chromosome Numbers in Three Species Groups of Freshwater flatworms Increase with Increasing Latitude Sven Lorch, Dirk Zeuss, Roland Brandl & Martin Brandle€
    Chromosome numbers in three species groups of freshwater flatworms increase with increasing latitude Sven Lorch, Dirk Zeuss, Roland Brandl & Martin Brandle€ Department of Ecology, Animal Ecology, Faculty of Biology, Philipps-Universitat€ Marburg, Karl-von-Frisch-Straße 8, 35043 Marburg, Germany Keywords Abstract Geographical range, parthenogenesis, Platyhelminthes, polyploidy, reproduction. Polyploidy in combination with parthenogenesis offers advantages for plasticity and the evolution of a broad ecological tolerance of species. Therefore, a posi- Correspondence tive correlation between the level of ploidy and increasing latitude as a surro- Martin Brandle,€ Department of Ecology, gate for environmental harshness has been suggested. Such a positive Animal Ecology, Faculty of Biology, Philipps- correlation is well documented for plants, but examples for animals are still € Universitat Marburg, Karl-von-Frisch-Straße 8, rare. Species of flatworms (Platyhelminthes) are widely distributed, show a 35043 Marburg, Germany. remarkably wide range of chromosome numbers, and offer therefore good Tel: +49 6421 28 26607; Fax: +49 6421 28 23387; model systems to study the geographical distribution of chromosome numbers. E-mail: [email protected] We analyzed published data on counts of chromosome numbers and geographi- cal information of three flatworm “species” (Phagocata vitta, Polycelis felina and Funding Information Crenobia alpina) sampled across Europe (220 populations). We used the mean DZ is supported by a PhD scholarship from chromosome number across individuals of a population as a proxy for the level Evangelisches Studienwerk Villigst, funded by of ploidy within populations, and we tested for relationships of this variable the German Federal Ministry of Education with latitude, mode of reproduction (sexual, asexual or both) and environmen- and Research tal variables (annual mean temperature, mean diurnal temperature range, mean Received: 2 March 2015; Revised: 16 precipitation and net primary production).
    [Show full text]
  • Volume II, Chapter 2 Columbia River Estuary and Lower Mainstem Subbasins
    Volume II, Chapter 2 Columbia River Estuary and Lower Mainstem Subbasins TABLE OF CONTENTS 2.0 COLUMBIA RIVER ESTUARY AND LOWER MAINSTEM ................................ 2-1 2.1 Subbasin Description.................................................................................................. 2-5 2.1.1 Purpose................................................................................................................. 2-5 2.1.2 History ................................................................................................................. 2-5 2.1.3 Physical Setting.................................................................................................... 2-7 2.1.4 Fish and Wildlife Resources ................................................................................ 2-8 2.1.5 Habitat Classification......................................................................................... 2-20 2.1.6 Estuary and Lower Mainstem Zones ................................................................. 2-27 2.1.7 Major Land Uses................................................................................................ 2-29 2.1.8 Areas of Biological Significance ....................................................................... 2-29 2.2 Focal Species............................................................................................................. 2-31 2.2.1 Selection Process............................................................................................... 2-31 2.2.2 Ocean-type Salmonids
    [Show full text]
  • Montana Fishing Regulations
    MONTANA FISHING REGULATIONS 20March 1, 2018 — F1ebruary 828, 2019 Fly fishing the Missouri River. Photo by Jason Savage For details on how to use these regulations, see page 2 fwp.mt.gov/fishing With your help, we can reduce poaching. MAKE THE CALL: 1-800-TIP-MONT FISH IDENTIFICATION KEY If you don’t know, let it go! CUTTHROAT TROUT are frequently mistaken for Rainbow Trout (see pictures below): 1. Turn the fish over and look under the jaw. Does it have a red or orange stripe? If yes—the fish is a Cutthroat Trout. Carefully release all Cutthroat Trout that cannot be legally harvested (see page 10, releasing fish). BULL TROUT are frequently mistaken for Brook Trout, Lake Trout or Brown Trout (see below): 1. Look for white edges on the front of the lower fins. If yes—it may be a Bull Trout. 2. Check the shape of the tail. Bull Trout have only a slightly forked tail compared to the lake trout’s deeply forked tail. 3. Is the dorsal (top) fin a clear olive color with no black spots or dark wavy lines? If yes—the fish is a Bull Trout. Carefully release Bull Trout (see page 10, releasing fish). MONTANA LAW REQUIRES: n All Bull Trout must be released immediately in Montana unless authorized. See Western District regulations. n Cutthroat Trout must be released immediately in many Montana waters. Check the district standard regulations and exceptions to know where you can harvest Cutthroat Trout. NATIVE FISH Westslope Cutthroat Trout Species of Concern small irregularly shaped black spots, sparse on belly Average Size: 6”–12” cutthroat slash— spots
    [Show full text]
  • R E S E a R C H / M a N a G E M E N T Aquatic and Terrestrial Flatworm (Platyhelminthes, Turbellaria) and Ribbon Worm (Nemertea)
    RESEARCH/MANAGEMENT FINDINGSFINDINGS “Put a piece of raw meat into a small stream or spring and after a few hours you may find it covered with hundreds of black worms... When not attracted into the open by food, they live inconspicuously under stones and on vegetation.” – BUCHSBAUM, et al. 1987 Aquatic and Terrestrial Flatworm (Platyhelminthes, Turbellaria) and Ribbon Worm (Nemertea) Records from Wisconsin Dreux J. Watermolen D WATERMOLEN Bureau of Integrated Science Services INTRODUCTION The phylum Platyhelminthes encompasses three distinct Nemerteans resemble turbellarians and possess many groups of flatworms: the entirely parasitic tapeworms flatworm features1. About 900 (mostly marine) species (Cestoidea) and flukes (Trematoda) and the free-living and comprise this phylum, which is represented in North commensal turbellarians (Turbellaria). Aquatic turbellari- American freshwaters by three species of benthic, preda- ans occur commonly in freshwater habitats, often in tory worms measuring 10-40 mm in length (Kolasa 2001). exceedingly large numbers and rather high densities. Their These ribbon worms occur in both lakes and streams. ecology and systematics, however, have been less studied Although flatworms show up commonly in invertebrate than those of many other common aquatic invertebrates samples, few biologists have studied the Wisconsin fauna. (Kolasa 2001). Terrestrial turbellarians inhabit soil and Published records for turbellarians and ribbon worms in leaf litter and can be found resting under stones, logs, and the state remain limited, with most being recorded under refuse. Like their freshwater relatives, terrestrial species generic rubric such as “flatworms,” “planarians,” or “other suffer from a lack of scientific attention. worms.” Surprisingly few Wisconsin specimens can be Most texts divide turbellarians into microturbellarians found in museum collections and a specialist has yet to (those generally < 1 mm in length) and macroturbellari- examine those that are available.
    [Show full text]