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Seed Ecology Iii
SEED ECOLOGY III The Third International Society for Seed Science Meeting on Seeds and the Environment “Seeds and Change” Conference Proceedings June 20 to June 24, 2010 Salt Lake City, Utah, USA Editors: R. Pendleton, S. Meyer, B. Schultz Proceedings of the Seed Ecology III Conference Preface Extended abstracts included in this proceedings will be made available online. Enquiries and requests for hardcopies of this volume should be sent to: Dr. Rosemary Pendleton USFS Rocky Mountain Research Station Albuquerque Forestry Sciences Laboratory 333 Broadway SE Suite 115 Albuquerque, New Mexico, USA 87102-3497 The extended abstracts in this proceedings were edited for clarity. Seed Ecology III logo designed by Bitsy Schultz. i June 2010, Salt Lake City, Utah Proceedings of the Seed Ecology III Conference Table of Contents Germination Ecology of Dry Sandy Grassland Species along a pH-Gradient Simulated by Different Aluminium Concentrations.....................................................................................................................1 M Abedi, M Bartelheimer, Ralph Krall and Peter Poschlod Induction and Release of Secondary Dormancy under Field Conditions in Bromus tectorum.......................2 PS Allen, SE Meyer, and K Foote Seedling Production for Purposes of Biodiversity Restoration in the Brazilian Cerrado Region Can Be Greatly Enhanced by Seed Pretreatments Derived from Seed Technology......................................................4 S Anese, GCM Soares, ACB Matos, DAB Pinto, EAA da Silva, and HWM Hilhorst -
Specialist Foragers in Forest Bee Communities Are Small, Social Or Emerge Early
Received: 5 November 2018 | Accepted: 2 April 2019 DOI: 10.1111/1365-2656.13003 RESEARCH ARTICLE Specialist foragers in forest bee communities are small, social or emerge early Colleen Smith1,2 | Lucia Weinman1,2 | Jason Gibbs3 | Rachael Winfree2 1GraDuate Program in Ecology & Evolution, Rutgers University, New Abstract Brunswick, New Jersey 1. InDiviDual pollinators that specialize on one plant species within a foraging bout 2 Department of Ecology, Evolution, and transfer more conspecific and less heterospecific pollen, positively affecting plant Natural Resources, Rutgers University, New Brunswick, New Jersey reproDuction. However, we know much less about pollinator specialization at the 3Department of Entomology, University of scale of a foraging bout compared to specialization by pollinator species. Manitoba, Winnipeg, Manitoba, CanaDa 2. In this stuDy, we measured the Diversity of pollen carried by inDiviDual bees forag- Correspondence ing in forest plant communities in the miD-Atlantic United States. Colleen Smith Email: [email protected] 3. We found that inDiviDuals frequently carried low-Diversity pollen loaDs, suggest- ing that specialization at the scale of the foraging bout is common. InDiviDuals of Funding information Xerces Society for Invertebrate solitary bee species carried higher Diversity pollen loaDs than Did inDiviDuals of Conservation; Natural Resources social bee species; the latter have been better stuDied with respect to foraging Conservation Service; GarDen Club of America bout specialization, but account for a small minority of the worlD’s bee species. Bee boDy size was positively correlated with pollen load Diversity, and inDiviDuals HanDling EDitor: Julian Resasco of polylectic (but not oligolectic) species carried increasingly Diverse pollen loaDs as the season progresseD, likely reflecting an increase in the Diversity of flowers in bloom. -
Guidelines for Determining Significance and Report Format and Content Requirements
COUNTY OF SAN DIEGO GUIDELINES FOR DETERMINING SIGNIFICANCE AND REPORT FORMAT AND CONTENT REQUIREMENTS BIOLOGICAL RESOURCES LAND USE AND ENVIRONMENT GROUP Department of Planning and Land Use Department of Public Works Fourth Revision September 15, 2010 APPROVAL I hereby certify that these Guidelines for Determining Significance for Biological Resources, Report Format and Content Requirements for Biological Resources, and Report Format and Content Requirements for Resource Management Plans are a part of the County of San Diego, Land Use and Environment Group's Guidelines for Determining Significance and Technical Report Format and Content Requirements and were considered by the Director of Planning and Land Use, in coordination with the Director of Public Works on September 15, 2O1O. ERIC GIBSON Director of Planning and Land Use SNYDER I hereby certify that these Guidelines for Determining Significance for Biological Resources, Report Format and Content Requirements for Biological Resources, and Report Format and Content Requirements for Resource Management Plans are a part of the County of San Diego, Land Use and Environment Group's Guidelines for Determining Significance and Technical Report Format and Content Requirements and have hereby been approved by the Deputy Chief Administrative Officer (DCAO) of the Land Use and Environment Group on the fifteenth day of September, 2010. The Director of Planning and Land Use is authorized to approve revisions to these Guidelines for Determining Significance for Biological Resources and Report Format and Content Requirements for Biological Resources and Resource Management Plans except any revisions to the Guidelines for Determining Significance presented in Section 4.0 must be approved by the Deputy CAO. -
The Potential Conservation Value of Unmowed Powerline Strips for Native Bees
BIOLOGICAL CONSERVATION Biological Conservation 124 (2005) 133–148 www.elsevier.com/locate/biocon The potential conservation value of unmowed powerline strips for native bees K.N. Russell a,*, H. Ikerd b, S. Droege c a Division of Invertebrate Zoology, American Museum of Natural History, Central Park West, 79th Street, New York, NY 10024, USA b Bee Biology and Systematics Laboratory, Utah State University, 5310 Old Main Hill, Logan, UT 84322-5310, USA c USGS Patuxent Wildlife Research Center, 12100 Beech Forest, Laurel, MD 20708-4083, USA Received 17 February 2004 Abstract The land area covered by powerline easements in the United States exceeds the area of almost all national parks, including Yel- lowstone. In parts of Europe and the US, electric companies have altered their land management practices from periodic mowing to extraction of tall vegetation combined with the use of selective herbicides. To investigate whether this alternate management practice might produce higher quality habitat for native bees, we compared the bee fauna collected in unmowed powerline corridors and in nearby mowed grassy fields at the Patuxent Wildlife Research Center (MD). Powerline sites had more spatially and numerically rare species and a richer bee community than the grassy fields, although the difference was less pronounced than we expected. Powerline sites also had more parasitic species and more cavity-nesting bees. Bee communities changed progressively through the season, but differences between the site types were persistent. The surrounding, non-grassland landscape likely has a strong influence on the bee species collected at the grassland sites, as some bees may be foraging in the grasslands but nesting elsewhere. -
Wild Bee Declines and Changes in Plant-Pollinator Networks Over 125 Years Revealed Through Museum Collections
University of New Hampshire University of New Hampshire Scholars' Repository Master's Theses and Capstones Student Scholarship Spring 2018 WILD BEE DECLINES AND CHANGES IN PLANT-POLLINATOR NETWORKS OVER 125 YEARS REVEALED THROUGH MUSEUM COLLECTIONS Minna Mathiasson University of New Hampshire, Durham Follow this and additional works at: https://scholars.unh.edu/thesis Recommended Citation Mathiasson, Minna, "WILD BEE DECLINES AND CHANGES IN PLANT-POLLINATOR NETWORKS OVER 125 YEARS REVEALED THROUGH MUSEUM COLLECTIONS" (2018). Master's Theses and Capstones. 1192. https://scholars.unh.edu/thesis/1192 This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository. It has been accepted for inclusion in Master's Theses and Capstones by an authorized administrator of University of New Hampshire Scholars' Repository. For more information, please contact [email protected]. WILD BEE DECLINES AND CHANGES IN PLANT-POLLINATOR NETWORKS OVER 125 YEARS REVEALED THROUGH MUSEUM COLLECTIONS BY MINNA ELIZABETH MATHIASSON BS Botany, University of Maine, 2013 THESIS Submitted to the University of New Hampshire in Partial Fulfillment of the Requirements for the Degree of Master of Science in Biological Sciences: Integrative and Organismal Biology May, 2018 This thesis has been examined and approved in partial fulfillment of the requirements for the degree of Master of Science in Biological Sciences: Integrative and Organismal Biology by: Dr. Sandra M. Rehan, Assistant Professor of Biology Dr. Carrie Hall, Assistant Professor of Biology Dr. Janet Sullivan, Adjunct Associate Professor of Biology On April 18, 2018 Original approval signatures are on file with the University of New Hampshire Graduate School. -
Zootaxa, Halictophagus, Insecta, Strepsiptera, Halictophagidae
Zootaxa 1056: 1–18 (2005) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 1056 Copyright © 2005 Magnolia Press ISSN 1175-5334 (online edition) A new species of Halictophagus (Insecta: Strepsiptera: Halicto- phagidae) from Texas, and a checklist of Strepsiptera from the United States and Canada JEYARANEY KATHIRITHAMBY1 & STEVEN J. TAYLOR2 1Department of Zoology, South Parks Road, Oxford OX1 3PS, U.K. [email protected] 2Center for Biodiversity, Illinois Natural History Survey, 607 East Peabody Drive (MC-652), Champaign IL 61820-6970 U.S.A. [email protected] Correspondence: Jeyaraney Kathirithamby Department of Zoology, South Parks Road, Oxford OX1 3PS, U.K.; e-mail: [email protected] Abstract A new species of Halictophagidae (Insecta: Strepsiptera), Halictophagus forthoodiensis Kathirith- amby & Taylor, is described from Texas, USA. We also present a key to 5 families, and a check-list of 11 genera and 84 species of Strepsiptera known from USA and Canada. Key words: Strepsiptera, Halictophagus, Texas, USA, Canada Introduction Five families and eighty three species of Strepsiptera have been recorded so far from USA and Canada of which thirteen are Halictophagus. Key to the families of adult male Strepsiptera found in USA and Canada 1. Mandibles absent..................................................................................... Corioxenidae – Mandibles present ........................................................................................................ 2 2. Legs with -
Carnivorous Plant Newsletter V44 N4 December 2015
Technical Refereed Contribution Soil pH values at sites of terrestrial carnivorous plants in south-west Europe Lubomír Adamec • Institute of Botany of the Czech Academy of Sciences • Dukelská 135 • CZ-379 82 Trˇebonˇ • Czech Republic • [email protected] Keywords: Soil water pH, neutral soils, Pinguicula spp., Drosera intermedia, Drosophyllum lusitanicum. Abstract: Although the majority of terrestrial carnivorous plants grow in acidic soils at a pH of 3.5-5.5, there are many dozens of carnivorous species, mostly mountainous or rocky Pinguicula species, which grow preferen- tially or strictly in neutral or slightly alkaline soils at pHs between 7-8. Knowledge of an optimum soil pH value and an amplitude of this factor may be important not only for understanding the ecology of various species and their conservation, but also for successfully growing them. I report soil pH values at microsites of 15 terrestrial carnivorous plant species or subspecies in SW Europe. Introduction The majority of terrestrial carnivorous plants grow in wetlands such as peat bogs, fens, wet meadows, or wet clayish sands. The soils have usually low available mineral nutrient content (N, P, K, Ca, Mg), are hypoxic or anoxic and usually acidic (Juniper et al. 1989; Adamec 1997; Rice 2006). Unlike mineral nutritional character- istics of these soils, which have commonly been studied and related to carnivorous plant growth in the field or greenhouse experiments and which have also been published (for the review see Adamec 1997), relatively very little is known about the relationship between soil pH and growth of terrestrial carnivorous plants. Although some limited knowledge of soil pH at habitats of carnivorous plants or in typical substrates exist among botanists and growers (e.g., Roberts & Oosting 1958; Aldenius et al. -
Unique Bee Communities Within Vacant Lots and Urban Farms Result from Variation in Surrounding Urbanization Intensity
sustainability Article Unique Bee Communities within Vacant Lots and Urban Farms Result from Variation in Surrounding Urbanization Intensity Frances S. Sivakoff ID , Scott P. Prajzner and Mary M. Gardiner * ID Department of Entomology, The Ohio State University, 2021 Coffey Road, Columbus, OH 43210, USA; [email protected] (F.S.S.); [email protected] (S.P.P.) * Correspondence: [email protected]; Tel.: +1-330-601-6628 Received: 1 May 2018; Accepted: 5 June 2018; Published: 8 June 2018 Abstract: We investigated the relative importance of vacant lot and urban farm habitat features and their surrounding landscape context on bee community richness, abundance, composition, and resource use patterns. Three years of pan trap collections from 16 sites yielded a rich assemblage of bees from vacant lots and urban farms, with 98 species documented. We collected a greater bee abundance from vacant lots, and the two forms of greenspace supported significantly different bee communities. Plant–pollinator networks constructed from floral visitation observations revealed that, while the average number of bees utilizing available resources, niche breadth, and niche overlap were similar, the composition of floral resources and common foragers varied by habitat type. Finally, we found that the proportion of impervious surface and number of greenspace patches in the surrounding landscape strongly influenced bee assemblages. At a local scale (100 m radius), patch isolation appeared to limit colonization of vacant lots and urban farms. However, at a larger landscape scale (1000 m radius), increasing urbanization resulted in a greater concentration of bees utilizing vacant lots and urban farms, illustrating that maintaining greenspaces provides important habitat, even within highly developed landscapes. -
Diversified Floral Resource Plantings Support Bee Communities After
www.nature.com/scientificreports Corrected: Publisher Correction OPEN Diversifed Floral Resource Plantings Support Bee Communities after Apple Bloom in Commercial Orchards Sarah Heller1,2,5,6, Neelendra K. Joshi1,2,3,6*, Timothy Leslie4, Edwin G. Rajotte2 & David J. Biddinger1,2* Natural habitats, comprised of various fowering plant species, provide food and nesting resources for pollinator species and other benefcial arthropods. Loss of such habitats in agricultural regions and in other human-modifed landscapes could be a factor in recent bee declines. Artifcially established foral plantings may ofset these losses. A multi-year, season-long feld study was conducted to examine how wildfower plantings near commercial apple orchards infuenced bee communities. We examined bee abundance, species richness, diversity, and species assemblages in both the foral plantings and adjoining apple orchards. We also examined bee community subsets, such as known tree fruit pollinators, rare pollinator species, and bees collected during apple bloom. During this study, a total of 138 species of bees were collected, which included 100 species in the foral plantings and 116 species in the apple orchards. Abundance of rare bee species was not signifcantly diferent between apple orchards and the foral plantings. During apple bloom, the known tree fruit pollinators were more frequently captured in the orchards than the foral plantings. However, after apple bloom, the abundance of known tree fruit pollinating bees increased signifcantly in the foral plantings, indicating potential for foral plantings to provide additional food and nesting resources when apple fowers are not available. Insect pollinators are essential in nearly all terrestrial ecosystems, and the ecosystem services they provide are vital to both wild plant communities and agricultural crop production. -
ALFABETISCHE TERMENLIJST Pagina 2 a a Z
ALFABETISCHE TERMENLIJST Pagina 2 A a z. alpha. A = afk. adenine: toegepast in schematische weergave vd. bouw van DNA en RNA. a. = afk. Lat. anno: in het jaar. a-, an- = voorvoegsel met de betekenis: niet, zonder. Å = ångstrom: verouderde lengteeenheid; 1 millimeter is gelijk aan 10 miljoen ångstrom; v. nm, afk. van nanometer. Aalwijn, Aalwee N. ZAfr. = Aloe spp. (Asphodelaceae), ook enkele aloë-achtige verwante soorten. Aaron's Beard N. = Opuntia leucotricha (Cactaceae). Aaron's Rod N. = Koningskaars: Verbascum thapsus (Scrophulariaceae). ABA z. abscisic acid. abaxial ADJ. = aan de vd. as verwijderde zijde, aan de onderzijde (ve. blad); syn. dorsal; ant. adaxial, ventral. abbreviate ADJ. = afgekort. ABC Islands N. = Aruba, Bonaire & Curaçao: de voormalig Ned. eilanden die, tov. de andere Kleine Antillen ver naar het Westen, voor de kust van Venezulela liggen; v. Leeward Islands, Windward Islands. aberrant ADJ. = afwijkend, niet normaal, ongewoon, iets verschilled vh. type; syn. abnormal. abiogenesis N. = veronderstelde ontwikkeling van levende organismen uit dood anorganisch materiaal. abiotic ADJ. = abiotisch: btr. factoren uit de niet-levende omgeving die het leven van planten en dieren beïnvloeden; bv. beschikbaar water, pH vd. bodem, kooldioxidegehalte vd. lucht en licht; v. biotic. abnormal ADJ. = ongewoon, abnormaal, afwijkend; v. aberrant. aboriginal ADJ. = oorspronkelijk, inheems; btr. plant die van nature in een gebied thuis hoort; syn. native, indigeneous; ant. exotic. aborted ADJ. = defect, onvruchtbaar, onvolledig ontwikkeld. abortion N. = het feit dat een orgaan of deel vd. plant zich niet ontwikkelt of in de volwassen plant niet meer aanwezig is. abortive ADJ. = al in een vroeg stadium onvolledig ontwikkeld. Abrojo Sp. N. = 1) Opuntia tunicata (Cactaceae) 2) ook O. -
Land Uses That Support Wild Bee (Hymenoptera: Apoidea: Anthophila) Communities Within an Agricultural Matrix
Land uses that support wild bee (Hymenoptera: Apoidea: Anthophila) communities within an agricultural matrix A DISSERTATION SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY Elaine Celeste Evans IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Dr. Marla Spivak December 2016 © Elaine Evans 2016 Acknowledgements Many people helped me successfully complete this project. Many years ago, my advisor, mentor, hero, and friend, Marla Spivak, saw potential in me and helped me to become an effective scientist and educator working to create a more bee-friendly world. I have benefitted immensely from her guidance and support. The Bee Lab team, both those that helped me directly in the field, and those that advised along the way through analysis and writing, have provided a dreamy workplace: Joel Gardner, Matt Smart, Renata Borba, Katie Lee, Gary Reuter, Becky Masterman, Judy Wu, Ian Lane, Morgan Carr- Markell. My committee helped guide me along the way and steer me in the right direction: Dan Cariveau (gold star for much advice on analysis), Diane Larson, Ralph Holzenthal, and Karen Oberauser. Cooperation with Chip Eullis and Jordan Neau at the USGS enabled detailed land use analysis. The bee taxonomists who helped me with bee identification were essential for the success of this project: Jason Gibbs, John Ascher, Sam Droege, Mike Arduser, and Karen Wright. My friends and family eased my burden with their enthusiasm for me to follow my passion and their understanding of my monomania. My husband Paul Metzger and my son August supported me in uncountable ways. -
Hymenoptera: Apoidea) Habitat in Agroecosystems Morgan Mackert Iowa State University
Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2019 Strategies to improve native bee (Hymenoptera: Apoidea) habitat in agroecosystems Morgan Mackert Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Recommended Citation Mackert, Morgan, "Strategies to improve native bee (Hymenoptera: Apoidea) habitat in agroecosystems" (2019). Graduate Theses and Dissertations. 17255. https://lib.dr.iastate.edu/etd/17255 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Strategies to improve native bee (Hymenoptera: Apoidea) habitat in agroecosystems by Morgan Marie Mackert A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Ecology and Evolutionary Biology Program of Study Committee: Mary A. Harris, Co-major Professor John D. Nason, Co-major Professor Robert W. Klaver The student author, whose presentation of the scholarship herein was approved by the program of study committee, is solely responsible for the content of this thesis. The Graduate College will ensure this thesis is globally accessible and will not permit alterations after a degree is conferred. Iowa State University Ames, Iowa 2019 Copyright © Morgan Marie Mackert, 2019. All rights reserved ii TABLE OF CONTENTS Page ACKNOWLEDGEMENTS ............................................................................................... iv ABSTRACT ....................................................................................................................... vi CHAPTER 1.