Earthworms in Forests
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Impact of Afforestation on Earthworm Populations in Iceland
ICEL. AGRIC. SCI. 26 (2013), 21-36 Impact of afforestation on earthworm populations in Iceland Bjarni D. SigurDSSon and Bjarni E. guDlEifSSon Agricultural University of Iceland, Hvanneyri, IS-311 Borgarnes, Iceland. e-mail: [email protected] (corresponding author), [email protected] ABSTRACT Earthworms were collected from different vegetation types in East and West Iceland. The vegetation types in East Iceland were Siberian larch (Larix sibirica) forests, native mountain birch (Betula pubescens) wood- lands and open heathlands. The study areas in West Iceland were Sitka spruce (Picea sitchensis), lodgepole pine (Pinus contorta) forests, mountain birch woodlands and open heathlands. Four earthworm species (Dendrobaena octaedra, Dendrodrilus rubidus, Aporrectodea caliginosa, Lumbricus rubellus) were identi- fied at both study areas and two additional ones in the West Iceland (Aporrectodea rosea and Octolasion cyaneum). No significant differences were detected in average earthworm species number and biomass between treeless heathlands and forests in East or West Iceland. There were, however, significant differences between the native deciduous forests and the coniferous plantations in West, but not East Iceland. Time since afforestation was found to have a significant effect on both earthworm diversity and density and should always be included in future studies. All earthworm parameters were positively related to soil N and amount of monocots, but negatively related to soil C/N ratio, tree LAI and tree height. Soil pH had no significant influence on any of the earthworm parameters. The most noteworthy finding was that earthworms were generally found in similar biomass and species richness in the exotic coniferous plantations in Iceland compared to the treeless heathlands, even if earthworm species composition showed strong changes. -
Annelida, Lumbricidae) - Description Based on Morphological and Molecular Data
A new earthworm species within a controversial genus: Eiseniona gerardoi sp. n. (Annelida, Lumbricidae) - description based on morphological and molecular data The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Díaz Cosín, Darío J., Marta Novo, Rosa Fernández, Daniel Fernández Marchán, and Mónica Gutiérrez. 2014. “A new earthworm species within a controversial genus: Eiseniona gerardoi sp. n. (Annelida, Lumbricidae) - description based on morphological and molecular data.” ZooKeys (399): 71-87. doi:10.3897/zookeys.399.7273. http:// dx.doi.org/10.3897/zookeys.399.7273. Published Version doi:10.3897/zookeys.399.7273 Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:12406906 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA A peer-reviewed open-access journal ZooKeys 399: A71–87 new (2014) earthworm species within a controversial genus: Eiseniona gerardoi sp. n... 71 doi: 10.3897/zookeys.399.7273 RESEARCH ARTICLE www.zookeys.org Launched to accelerate biodiversity research A new earthworm species within a controversial genus: Eiseniona gerardoi sp. n. (Annelida, Lumbricidae) - description based on morphological and molecular data Darío J. Díaz Cosín1,†, Marta Novo1,2,‡, Rosa Fernández1,3,§, Daniel Fernández Marchán1,|, Mónica Gutiérrez1,¶ 1 -
The Effect of Invasive Earthworm Lumbricus Terrestris on The
The Effect of Invasive Earthworm Lumbricus terrestris on the Distribution of Nitrogen in Soil Profile Sarah Adelson, Christine Doman, Gillian Golembiewski, Luke Middleton University of Michigan Biological Station, Spring 2009 Abstract The purpose of this study was to determine if Lumbricus terrestris, an invasive earthworm in Northern Michigan, is redistributing nitrogen from the organic soil layer to the deeper, mineral soil layer. L. terrestris burrow 2 meters vertically into the ground and emerge to feed on freshly fallen leaf litter. The study included collecting of L. terrestris in 16 0.5 m square plots by method of electro-shock. Soil cores from a depth of 0-5 and 30-40 cm as well as leaf litter were taken from each plot to determine nitrogen content and nitrogen isotope ratios. Data analysis resulted in no significance between plots with earthworms and without earthworms in both nitrogen, N, isotope ratios and N content. Plots with L. terrestris showed no difference between the organic and mineral soil layer. This result suggests that L. terrestris are homogenizing soil layers. However, smaller than ideal sample sizes limit interpretive capacity of the results. Further research needs to be completed to confirm these perceived trends. The analysis of nitrogen isotope ratios suggest that there is another source of 15N other than leaf litter and L. terrestris that is contributing to soil composition and therefore the contribution of each was not conclusively determined. Introduction Invasion of an exotic species into an ecosystem is one of the leading threats to biologically diverse ecosystems throughout the world. Exotic species are initially introduced as a solution for food, farming, aesthetic purposes, or even accidentally. -
Earthworm Annelid Dissection External Anatomy
Name: Section: Earthworm Annelid Dissection External Anatomy Examine your preserved earthworm and determine the anterior and posterior ends in addition to its dorsal and ventral sides. The ventral side will be slightly flattened and will have two openings types of opening. Locate the worm's mouth and anus. Near the mouth will be a fleshy protruberance called the prostomium. The prostomium is located on the dorsal surface of the worm. Note the swelling of the earthworm near its anterior side - this is the clitellum. Label the clitellum on the drawing. The clitellum is active in the formation of an egg capsule, or cocoon. The openings toward the anterior of the worm are the male genital pores or sperm ducts. There are two pairs. The first pair is anterior to the second pair. The second pair is called the genital setae. They are tiny and are located just above the clitellum. They may be too small to see but may be visualized using a dissecting microscope. Sperm are produced in the testes and pass out through these pores. Just above the first pair of sperm ducts are the female genital pores. Again, these may be too small to see without a dissecting microscope. Eggs are produced in the ovaries and pass out of the body through these pores. Locate the dark line that runs down the dorsal side of the worm, this is the dorsal blood vessel. The ventral blood vessel can be seen on the underside of the worm, though it is usually not as dark. Internal Anatomy 1. Place the specimen in the dissecting pan DORSAL side up. -
Utilizing Soil Characteristics, Tissue Residues, Invertebrate Exposures
Utilizing soil characteristics, tissue residues, invertebrate exposures and invertebrate community analyses to evaluate a lead-contaminated site: A shooting range case study Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy In the Graduate School of The Ohio State University By Sarah R. Bowman, M.S. Graduate Program in Evolution, Ecology, and Organismal Biology The Ohio State University 2015 Dissertation Committee: Roman Lanno, Advisor Nicholas Basta Susan Fisher Copyright by Sarah R. Bowman 2015 Abstract With over 4,000 military shooting ranges, and approximately 9,000 non-military shooting ranges within the United States, the Department of Defense and private shooting range owners are challenged with management of these sites. Ammunition used at shooting ranges is comprised mostly of lead (Pb). Shooting ranges result in high soil metal concentrations in small areas and present unique challenges for ecological risk assessment and management. Mean natural background soil Pb is about 32 mg/kg in the eastern United States, but organisms that live in soil or in close association with soil may be at risk from elevated levels of Pb at shooting ranges. Previous shooting range studies on the ecotoxicological impacts of Pb, with few exceptions, used total soil Pb levels as a measure of exposure. However, total soil Pb levels are often not well correlated with Pb toxicity or bioaccumulation. This is a result of differences in Pb bioavailability, or the amount of Pb taken up by an organism that causes a biological response, depending on soil physical/chemical characteristics and species-specific uptake, metabolism, and elimination mechanisms. -
Size Variation and Geographical Distribution of the Luminous Earthworm Pontodrilus Litoralis (Grube, 1855) (Clitellata, Megascolecidae) in Southeast Asia and Japan
A peer-reviewed open-access journal ZooKeys 862: 23–43 (2019) Size variation and distribution of Pontodrilus litoralis 23 doi: 10.3897/zookeys.862.35727 RESEARCH ARTICLE http://zookeys.pensoft.net Launched to accelerate biodiversity research Size variation and geographical distribution of the luminous earthworm Pontodrilus litoralis (Grube, 1855) (Clitellata, Megascolecidae) in Southeast Asia and Japan Teerapong Seesamut1,2,4, Parin Jirapatrasilp2, Ratmanee Chanabun3, Yuichi Oba4, Somsak Panha2 1 Biological Sciences Program, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand 2 Ani- mal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand 3 Program in Animal Science, Faculty of Agriculture Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand 4 Department of Environmental Biology, Chubu University, Kasugai 487-8501, Japan Corresponding authors: Somsak Panha ([email protected]), Yuichi Oba ([email protected]) Academic editor: Samuel James | Received 24 April 2019 | Accepted 13 June 2019 | Published 9 July 2019 http://zoobank.org/663444CA-70E2-4533-895A-BF0698461CDF Citation: Seesamut T, Jirapatrasilp P, Chanabun R, Oba Y, Panha S (2019) Size variation and geographical distribution of the luminous earthworm Pontodrilus litoralis (Grube, 1855) (Clitellata, Megascolecidae) in Southeast Asia and Japan. ZooKeys 862: 23–42. https://doi.org/10.3897/zookeys.862.35727 Abstract The luminous earthworm Pontodrilus litoralis (Grube, 1855) occurs in a very wide range of subtropical and tropical coastal areas. Morphometrics on size variation (number of segments, body length and diameter) and genetic analysis using the mitochondrial cytochrome c oxidase subunit 1 (COI) gene sequence were conducted on 14 populations of P. -
Annelida, Lumbricidae) - Description Based on Morphological and Molecular Data
A peer-reviewed open-access journal ZooKeys 399: A71–87 new (2014) earthworm species within a controversial genus: Eiseniona gerardoi sp. n... 71 doi: 10.3897/zookeys.399.7273 RESEARCH ARTICLE www.zookeys.org Launched to accelerate biodiversity research A new earthworm species within a controversial genus: Eiseniona gerardoi sp. n. (Annelida, Lumbricidae) - description based on morphological and molecular data Darío J. Díaz Cosín1,†, Marta Novo1,2,‡, Rosa Fernández1,3,§, Daniel Fernández Marchán1,|, Mónica Gutiérrez1,¶ 1 Departamento de Zoología y Antropología Física, Facultad de Biología, Universidad Complutense de Madrid, C/ José Antonio Nováis 2, 28040, Madrid, Spain 2 Cardiff School of Biosciences, Cardiff University, BIOSI 1, Museum Avenue, Cardiff CF10, 3TL, UK3 Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA † http://zoobank.org/38538B17-F127-4438-9DE2-F9D6C597D044 ‡ http://zoobank.org/79DA5419-91D5-4EAB-BC72-1E46F10C716A § http://zoobank.org/99618966-BB50-4A01-8FA0-7B1CC31686B6 | http://zoobank.org/CAB83B57-ABD1-40D9-B16A-654281D71D58 ¶ http://zoobank.org/E1A7E77A-9CD5-4D67-88A3-C7F65AD6A5BE Corresponding author: Darío J. Díaz Cosín ([email protected]) Academic editor: R. Blakemore | Received 17 February 2014 | Accepted 25 March 2014 | Published 9 April 2014 http://zoobank.org/F5AC3116-E79E-4442-9B26-2765A5243D5E Citation: Cosín DJD, Novo M, Fernández R, Marchán DF, Gutiérrez M (2014) A new earthworm species within a controversial genus: Eiseniona gerardoi sp. n. (Annelida, Lumbricidae) - description based on morphological and molecular data. ZooKeys 399: 71–87. doi: 10.3897/zookeys.399.7273 Abstract The morphological and anatomical simplicity of soil dwelling animals, such as earthworms, has limited the establishment of a robust taxonomy making it sometimes subjective to authors’ criteria. -
Earthworms (Annelida: Oligochaeta) of the Columbia River Basin Assessment Area
United States Department of Agriculture Earthworms (Annelida: Forest Service Pacific Northwest Oligochaeta) of the Research Station United States Columbia River Basin Department of the Interior Bureau of Land Assessment Area Management General Technical Sam James Report PNW-GTR-491 June 2000 Author Sam Jamesis an Associate Professor, Department of Life Sciences, Maharishi University of Management, Fairfield, IA 52557-1056. Earthworms (Annelida: Oligochaeta) of the Columbia River Basin Assessment Area Sam James Interior Columbia Basin Ecosystem Management Project: Scientific Assessment Thomas M. Quigley, Editor U.S. Department of Agriculture Forest Service Pacific Northwest Research Station Portland, Oregon General Technical Report PNW-GTR-491 June 2000 Preface The Interior Columbia Basin Ecosystem Management Project was initiated by the USDA Forest Service and the USDI Bureau of Land Management to respond to several critical issues including, but not limited to, forest and rangeland health, anadromous fish concerns, terrestrial species viability concerns, and the recent decline in traditional commodity flows. The charter given to the project was to develop a scientifically sound, ecosystem-based strategy for managing the lands of the interior Columbia River basin administered by the USDA Forest Service and the USDI Bureau of Land Management. The Science Integration Team was organized to develop a framework for ecosystem management, an assessment of the socioeconomic biophysical systems in the basin, and an evalua- tion of alternative management strategies. This paper is one in a series of papers developed as back- ground material for the framework, assessment, or evaluation of alternatives. It provides more detail than was possible to disclose directly in the primary documents. -
The Giant Palouse Earthworm (Driloleirus Americanus)
PETITION TO LIST The Giant Palouse Earthworm (Driloleirus americanus) AS A THREATENED OR ENDANGERED SPECIES UNDER THE ENDANGERED SPECIES ACT June 30, 2009 Friends of the Clearwater Center for Biological Diversity Palouse Audubon Palouse Prairie Foundation Palouse Group of the Sierra Club 1 June 30, 2009 Ken Salazar, Secretary of the Interior Robyn Thorson, Regional Director U.S. Department of the Interior U.S. Fish & Wildlife Service 1849 C Street N.W. Pacific Region Washington, DC 20240 911 NE 11th Ave Portland, Oregon Dear Secretary Salazar, Friends of the Clearwater, Center for Biological Diversity, Palouse Prairie Foundation, Palouse Audubon, Palouse Group of the Sierra Club and Steve Paulson formally petition to list the Giant Palouse Earthworm (Driloleirus americanus) as a threatened or endangered species pursuant to the Endangered Species Act (”ESA”), 16 U.S.C. §1531 et seq. This petition is filed under 5 U.S.C. 553(e) and 50 CFR 424.14 (1990), which grant interested parties the right to petition for issuance of a rule from the Secretary of Interior. Petitioners also request that critical habitat be designated for the Giant Palouse Earthworm concurrent with the listing, pursuant to 50 CFR 424.12, and pursuant to the Administrative Procedures Act (5 U.S.C. 553). The Giant Palouse Earthworm (D. americanus) is found only in the Columbia River Drainages of eastern Washington and Northern Idaho. Only four positive collections of this species have been made within the last 110 years, despite the fact that the earthworm was historically considered “very abundant” (Smith 1897). The four collections include one between Moscow, Idaho and Pullman, Washington, one near Moscow Mountain, Idaho, one at a prairie remnant called Smoot Hill and a fourth specimen near Ellensberg, Washington (Fender and McKey- Fender, 1990, James 2000, Sánchez de León and Johnson-Maynard, 2008). -
Ecological Functions of Earthworms in Soil
Ecological functions of earthworms in soil Walter S. Andriuzzi Thesis committee Promotors Prof. Dr L. Brussaard Professor of Soil Biology and Biological Soil Quality Wageningen University Prof. Dr T. Bolger Professor of Zoology University College Dublin, Republic of Ireland Co-promotors Dr O. Schmidt Senior Lecturer University College Dublin, Republic of Ireland Dr J.H. Faber Senior Researcher and Team leader Alterra Other members Prof. Dr W.H. van der Putten, Wageningen University Prof. Dr J. Filser, University of Bremen, Germany Dr V. Nuutinen, Agrifood Research Finland, Jokioinen, Finland Dr P. Murphy, University College Dublin, Republic of Ireland This research was conducted under the auspices of University College Dublin and the C. T. De Wit Graduate School for Production Ecology and Resource Conservation following a Co-Tutelle Agreement between University College Dublin and Wageningen University. Ecological functions of earthworms in soil Walter S. Andriuzzi Thesis submitted in fulfilment of the requirements for the degree of doctor at Wageningen University by the authority of the Rector Magnificus Prof. Dr A.P.J. Mol, in the presence of the Thesis Committee appointed by the Academic Board to be defended in public on Monday 31 August 2015 at 4 p.m. in the Aula. Walter S. Andriuzzi Ecological functions of earthworms in soil 154 pages. PhD thesis, Wageningen University, Wageningen, NL (2015) With references, with summary in English ISBN 978-94-6257-417-5 Abstract Earthworms are known to play an important role in soil structure and fertility, but there are still big knowledge gaps on the functional ecology of distinct earthworm species, on their own and in interaction with other species. -
On the Nematodes of the Common Earthworm. by Gilbert E
ON THE NBMATODES OF THE COMMON EARTHWORM. 605 On the Nematodes of the Common Earthworm. By Gilbert E. Johnson, M.Sc.(Biim.), University of Birmingham ; Board of Agriculture and Fisheries Research Scholar. (Studies from the Research Department in Agricultural Zoology, University of Birmingham.) With Plate 37 and 2 Text-figures. CONTENTS. PAGE Introduction ...... 605 Occurrence ...... 609 Cultural Methods . .612 Identification . .618 Confusion of Two Species under one name . 619 Anatomy ...... 623 Questions of Sex ...... 627 (1) Analysis and Character of Reproduction . 627 (2) The Sex Ratio . .635 Life-History . .637 (1) Investigation of Problems relating to the Life-Cycle . 637 (2) Probable Course of the Life-Cycle . .647 Summary of Principal Results ... 649 INTRODUCTION. (1) Survey of the Literature. IT has long been a matter of common knowledge that larval Dematodes inhabit the common earthworm, Lum- bricus terrestris, Linn. They are found both in the coelom and in the nephridia. Those occurring in the ccelom 606 GILBERT E. JOHNSON. are enclosed in cysts or capsules, by which movement is restricted or entirely prevented. Those inhabiting the nephridia, on the other hand, are free and active. The en- cysted, ccelomic form has long been known as Rhabditis pellio, having been named by Schneider (1) as early as 1866. The nephridial form is generally believed to be the same species, but it was not mentioned by Schneider, and I have not been able to find that its identity has been deter- mined by any subsequent investigator, as the following brief survey of the literature will show. In 1845 Dujardin, according to Bastian (2), recorded the existence of nematodes in the general body-cavity of the earthworm. -
Title of the Paper
Behera ‒ Patnaik: Negative effect of phosphogypsum over physiological activity of earthworm Eisenia fetida - 4455 - NEGATIVE EFFECT OF PHOSPHOGYPSUM OVER PHYSIOLOGICAL ACTIVITY OF EARTHWORM EISENIA FETIDA BEHERA, A. K.* – PATNAIK, A. School of Life Sciences, Sambalpur University, Jyoti Vihar, Burla, Odisha 768019, India (phone: +91-89-8423-7334) *Corresponding author e-mail: [email protected] (Received 22nd Mar 2018; accepted 27th Jun 2018) Abstract. The study aimed to assess the genuine impact of phosphogypsum on the growth, feeding, respiration and regeneration of earthworm Eisenia fetida. In laboratory condition the earthworms were cultured under 0% (control), 4%, 8% and 10% concentration of phosphogypsum for 30 days. After completion of every 10 day changes in the above parameters were observed to track the impact of phosphogypsum. With increasing exposure duration and concentration of phosphogypsum lower growth rate, declined feeding habit, maximum respiration rate and deprived regeneration power were noticed. The highest and lowest growths were 1.39 gm at 0% and 0.05 gm at 10%, respectively. Maximum feeding rate was 32.65 with a minimum rate 16.20 g g-1 live tissue. Respiration rate was highest at 10% i.e. 0.0578 g-1 live worm tissue hr-1 kg-1 soil, as most of the energy used to respire to sustain in such diverse condition and 0.575 g-1 live worm tissue hr-1 kg-1 soil recorded as lowest in 0%. The rate of regeneration was deeply hampered and there was no viable worms left at 8% and 10% concentration to assess. Regeneration was only observed at 0% and 4%.