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Ziel: Die Vegetation der mitteleuropäischen Buchenwälder hat sich in den vergangenen Jahrzehnten deutlich verändert. Über die Änderungen in den wärmeliebenden Seggen-Hangbuchenwäldern (Carici-Fagetum) unter dem Einfluss des Nutzungs- und Klimawandels, der Eutrophierung und des Schalenwild-Einflusses ist aber bisher wenig bekannt. Wir verglichen Vegetationsaufnahmen des Carici-Fagetum aus den 1950er Jahren mit aktuellen und fragten: (1) Wie haben sich Struktur, Diversität und Artenzusammensetzung verändert? (2) Was sind die treibenden Faktoren dieser Veränderungen? (3) Welche Rückschlüsse ergeben sich für die zukünftige Entwicklung und Behandlung dieser Wälder?
Untersuchungsgebiet: Göttinger Wald (Süd-Niedersachsen, Deutschland, Mitteleuropa)
Methoden: Die Vegetation von 78 Quasi-Dauerflächen in vier Subassoziationen des Carici-Fagetum wurde im Zeitraum 1955 bis 1960 und 2011 bis 2012 aufgenommen. Unterschiede in der Vegetationsstruktur, der Diversität und Artenzusammensetzung sowie hinsichtlich verschiedener forstlicher und standortökologischer Parameter und ökologischer Artengruppen zwischen beiden Aufnahmeterminen wurden mit Hilfe von Ordinations- und Permutations-Verfahren sowie paarweiser Vergleiche analysiert und statistisch geprüft.
Ergebnisse: Strukturell hat vor allem die Strauchschicht stark zugenommen, insbesondere bedingt durch eine Intensivierung der Rehwild-Bejagung. In der Bodenvegetation haben die typischen Arten des Carici-Fagetum stark abgenommen, darunter auch viele Rote-Liste-Arten. Zugenommen haben dagegen neben den Gehölzen die weit verbreiteten Arten der mesophilen Buchenwälder. Dies zeigt sich auch in den Veränderungen der Zeigerwerte nach Ellenberg. Dem Rückgang von lichtliebenden, trockenheitsertragenden Magerkeitszeigern steht eine Zunahme von schattentoleranten, mesophilen und an eine bessere Nährstoffversorgung gebundenen Arten der geschlossenen Buchenwälder gegenüber, was zu einer zunehmenden Homogenisierung der Vegetation führt. Ursachen für diese Veränderungen sind das geänderte Bestandesklima durch eine dichter schließende Strauchschicht und atmosphärische Stickstoffeinträge, wobei letzteres wohl vor allem das Wachstum der Buche förderte. Eine deutliche Zunahme des immergrünen, ozeanisch verbreiteten Efeu (Hedera helix), der sehr empfindlich auf tiefe Temperaturen im Winter reagiert, gleichzeitig aber bei erhöhtem CO2-Angebot seine Wuchsleistung über proportional erhöht, kann als Reaktion auf den Klimawandel der letzten 50 Jahre gewertet werden. Positiv hat sich auch eine Reduktion des Rehwild-Verbisses auf diese und andere Arten – z. B. Lilium martagon als einzige Rote-Liste-Art mit einer positiven Deckungsgradentwicklung – ausgewirkt.
Schlussfolgerungen: Die wärmeliebenden Seggen-Hangbuchenwälder haben in den letzten 50 Jahren charakteristische und wertvolle floristische Elemente – häufig Relikte der früheren Mittelwaldnutzung in Verbindung mit Waldweide – verloren. Mit der Einstellung der forstlichen Nutzung, z. T. bedingt durch Naturschutzmaßnahmen, der Reduktion des Schalenwildverbisses und den atmosphärischen Nährstoffeinträgen zeigt das Carici-Fagetum im Göttinger Wald heute eine Sukzession zum mesophilen Wald, wie sie für viele thermophile Laubwälder in Mitteleuropa nach Jahrhunderten der Auflichtung und Aushagerung typisch geworden ist.
For faunistic research on a certain animal group, knowledge of the situation in surrounding countries is a necessity. The presence of certain species in neighbouring regions, together with notes on their distribution and trends, offers valuable information for the interpretation of the status of these species in one’s own study area. Changes in the national fauna – e.g. the discovery of a new species – can often better be explained when integrating information on the status of species in nearby countries. Distribution atlases are therefore not only valuable publications for the country of concern, but also for other countries in the same region.
The article reviews distribution records of Deroceras invadens (previously called D. panormitanum and D. caruanae), adding significant unpublished records from the authors’ own collecting, museum samples, and interceptions on goods arriving in the U.S.A. By 1940 D. invadens had already arrived in Britain, Denmark, California, Australia and probably New Zealand; it has turned up in many further places since, including remote oceanic islands, but scarcely around the eastern Mediterranean (Egypt and Crete are the exceptions), nor in Asia. Throughout much of the Americas its presence seems to have been previously overlooked, probably often being mistaken for D. laeve. New national records include Mexico, Costa Rica, and Ecuador, with evidence from interceptions of its presence in Panama, Peru, and Kenya. The range appears limited by cold winters and dry summers; this would explain why its intrusion into eastern Europe and southern Spain has been rather slow and incomplete. At a finer geographic scale, the occurrence of the congener D. reticulatum provides a convenient comparison to control for sampling effort; D. invadens is often about half as frequently encountered and sometimes predominates. Deroceras invadens is most commonly found in synanthropic habitats, particularly gardens and under rubbish, but also in greenhouses, and sometimes arable land and pasture. It may spread into natural habitats, as in Britain, South Africa,
Australia and Tenerife. Many identifications have been checked in the light of recent taxonomic revision, revealing that the sibling species D. panormitanum s.s. has spread much less extensively. A number of published or online records, especially in Australia, have turned out to be misidentifications of D. laeve.
A third Supplement to the 1992 Catalog of the Scolytidae and Platypodidae (Coleoptera) of the World (Wood and Bright 1992) is presented. This Supplement updates the taxonomy, distribution, and biology pertaining to these families of Coleoptera from 2000 to the end of 2010. A few 2011 taxonomic references are included in order to make the nomenclature as current as possible. The format of this Supplement differs slightly from the format of the original 1992 Catalog and the two previous Supplements. Only references relating to general biology, systematics and distribution were selected to be included. Tribal arrangement follows the scheme established in the 1992 World Catalog, with additions. Each genus is listed alphabetically under the current tribe and the species are listed alphabetically under the current genus. Additional information on figures, distribution, hosts, and references relating to the above are given. The bibliography used with this Supplement lists 580 references, most published from 2000 to the end of 2010. New synonymy proposed: Phloeotribus carinatus Burgos and Equihua, 2003 (= Phloeotribus ebeneus Wood, 2007). New combinations proposed: Phloeosinus kinabaluensis Bright to Hyledius; Phloeosinus phyllocladus Bright to Hyledius.
An argument is made for the retention of the family status of the Scolytidae and Platypodidae as members of the superfamily Curculionoidea. A new subfamily and tribal arrangement is proposed: SCOLYTIDAE comprising 13 subfamilies, Hylesininae, with 12 tribes, Hyorrhynchinae, with one tribe; Scolytinae, with one tribe; Hexacolinae, with one tribe; Cylindrobrotinae, with one tribe; Scolytoplatypodinae, with one tribe; Cactopininae, with one tribe; Carphodicticinae, with one tribe; Micracidinae, with one tribe; Crypturginae, with one tribe; Ipinae, with six tribes; Cryphalinae, with one tribe and Corthylinae, with two tribes and PLATYPODIDAE comprising three subfamilies, Coptonotinae, with three tribes; Tesserocerinae, with two tribes and Platypodinae, with one tribe.
The types of nominal species of Diapriinae in the collection of the Natural History Museum, London, are catalogued. Lectotypes are designated for the following taxa: Diapria peraffinis Ashmead, 1896; D. smithii Ashmead, 1896; Galesus bipunctatus Ashmead,1894; G. (G.) foersteri var. nigricornis Kieffer, 1911; G. sexpunctatus Ashmead, 1893; G. walkeri Kieffer, 1907; Idiotypa nigriceps Kieffer, 1909; I. nigriceps Kieffer, 1911; I. pallida Ashmead, 1893; I. pallida Ashmead in Riley, Ashmead & Howard, 1894; Paramesius angustipennis Kieffer, 1911; P. cameroni Kieffer, 1911; Phaenopria cameroni Kieffer, 1911; P. halterata Kieffer, 1911; P. magniclavata Ashmead, 1896; Tropidopsis clavata Ashmead, 1893; T. clavata Ashmead in Riley, Ashmead & Howard, 1894. New combinations are proposed: Aneuropria bifurcata comb. nov. for Mantara bifurcata Dodd, 1920; Basalys quadridens comb. nov. for Microgalesus quadridens Kieffer, 1912; Coptera cratocerus comb. nov. for Galesus cratocerus Cameron, 1912; Coptera sexpunctata comb. nov. for Galesus sexpunctatus Ashmead, 1893; Doliopria magniclavata comb. nov. for Phaenopria magniclavata Ashmead, 1896; Spilomicrus aterrimus comb. nov. for Hoplopria aterrima Dodd,
1920; Spilomicrus campbellanus comb. nov. for Antarctopria campbellana Yoshimoto, 1964; Spilomicrus coelopae comb. nov. for Antarctopria coelopae Early, 1978; Spilomicrus diomedeae comb. nov. for Antarctopria diomedeae Early, 1978; Spilomicrus helosciomyzae comb. nov. for Malvina helosciomyzae Early & Horning, 1978; Spilomicrus insulae comb. nov. for Malvina insulae Early, 1980; Spilomicrus latigaster comb. nov. for Antarctopria latigaster Brues in Tillyard, 1920; Spilomicrus punctatus comb. nov. for Malvina punctata Cameron, 1889; Spilomicrus rekohua comb. nov. for Antarctopria rekohua Early, 1978; Trichopria bouceki comb. nov. for Oxypria bouceki Masner, 1959; Trichopria nigriceps comb. nov. for Tropidopria nigriceps Ashmead in Riley, Ashmead & Howard, 1894; Trichopria nigriceps comb. nov. for Xyalopria nigriceps Kieffer, 1907; Trichopria spinosiceps comb. nov. for Acidopria spinosiceps Dodd, 1920; Trichopria walkeri comb. nov. for Diapria walkeri Dalla Torre, 1890. New replacement names are proposed: Coptera mosselensis nom. nov. for C. nigricornis Nixon, 1930 preocc.; Coptera pijiguaorum nom. nov. for C. sexpunctata Montilla & García, 2008 preocc.; Spilomicrus kozlovi nom. nov. for S. punctatus Kozlov, 1978 preocc.; Trichopria fluminis nom. nov. for T. nigriceps (Kieffer, 1907) preocc.; T. thermarum nom. nov. for T. nigriceps (Kieffer, 1913) preocc. New specific synonyms are proposed: Basalys cursitans (Kieffer, 1911) = B. pedisequa (Kieffer, 1911) syn. nov. (the former removed from synonymy with B. parvus Thomson, 1858); B. iphicla Nixon, 1980 = B. macroptera (Kieffer, 1911) syn. nov.; Coptera bipunctata (Ashmead in Riley, Ashmead & Howard, 1894) = C. sexpunctata (Ashmead, 1893) syn. nov.; Idiotypa nigriceps Kieffer, 1911 = I. nigriceps Kieffer, 1909 syn. nov.; I. pallida Ashmead in Riley, Ashmead & Howard, 1894 = I. pallida Ashmead, 1893 syn. nov.; Psilus nigricornis (Kieffer, 1911) = P. fuscipennis (Curtis, 1831) syn. nov.; P. walkeri (Kieffer, 1907) = P. fuscipennis (Curtis, 1831) syn. nov.; T. bouceki (Masner, 1959) = T. conotoma (Kieffer, 1911) syn. nov.; Trichopria halterata (Kieffer, 1911) = T. halterata (Kieffer, 1909) syn. nov. New generic synonyms are proposed: Antarctopria Brues in Tillyard, 1920 = Spilomicrus Westwood, 1832 syn. nov.; Malvina Cameron, 1889 = Spilomicrus Westwood, 1832 syn. nov.; Mantara Dodd, 1920 = Aneuropria Kieffer, 1905 syn. nov.; Microgalesus Kieffer, 1912 = Basalys Westwood, 1833 syn. nov.; Xyalopria Kieffer, 1907 = Trichopria Ashmead, 1893 syn. nov. (Xyalopria is removed from synonymy with Megaplastopria Ashmead, 1903). A brief account of some aspects of the history of these types is given.
The riparian rainforest on the streamside levees of the coastal floodplain of the Clarence River on the North Coast of New South Wales was cleared during the 1860s by small landholders seeking fertile land. Only three small remnants remain. Using a combination of historical species lists, corner trees from surveyors’ portion plans, habitat information and the NSW Scientific Committee’s (1999) determination for lowland rainforest on floodplain a conceptual model of the original distribution of rainforest suballiances on the levees of the Clarence River coastal floodplain is proposed.
Past concepts and synonymies of Anadenobolus monilicornis (Porat, 1876) (Spirobolida: Rhinocricidae), including the implied synonymy of Rhinocricus ectus Chamberlin, 1920, are consolidated into a formal account with the fi rst illustrations of the holotype. Prior to 1492, A. monilicornis was probably indigenous to an unknown number of southern Antillean islands, but through modern commerce, man has introduced it to Florida, Bermuda, Barbados, the Cayman Islands, and Jamaica, and probably repeatedly (re)introduced conspecifi c material to all the Lesser Antilles, resulting in subcontinuous gene pool mixing and reticulate evolution. A broad species concept is necessary to encompass the multitudinous variants, some of which have been recognized as species; only one true Caribbean species of Anadenobolus Silvestri, 1897, may exist, for which arboreus (Saussure, 1859) is the oldest name. The distribution of A. monilicornis presently extends from Bermuda and southern coastal Florida through the Greater and Lesser Antilles (excepting Cuba) to eastern coastal Venezuela and central Suriname, with outlier populations in Jamaica, the Cayman Islands, and Tampa Bay and the eastern Floridian panhandle; excepting Barbados, the indigenous range may have extended from Hispaniola through the same area. Introductions into Manitoba, Canada, and North Carolina, USA, have not yielded viable populations. Localities are newly recorded from St. Thomas, US Virgin Islands.
Here we present a formal description of Biremis panamae Barka, Witkowski et Weisenborn sp. nov., which was isolated from the marine littoral environment of the Pacific Ocean coast of Panama. The description is based on morphology (light and electron microscopy) and the rbcL, psbC and SSU sequences of one clone of this species. The new species is included in Biremis due to its morphological features; i.e. two marginal rows of foramina, chambered striae, and girdle composed of numerous punctate copulae. The new species also possesses a striated valve face which is not seen in most known representatives of marine littoral Biremis species. In this study we also present the relationship of Biremis to other taxa using morphology, DNA sequence data and observations of auxosporulation. Our results based on these three sources point to an evolutionary relationship between Biremis, Neidium and Scoliopleura. The unusual silicified incunabular caps present in them are known otherwise only in Muelleria, which is probably related to the Neidiaceae and Scoliotropidaceae. We also discuss the relationship between Biremis and the recently described Labellicula and Olifantiella.
A gomphid male from west-central Wisconsin (Eau Claire County, North Fork Eau Claire River, 11 June 1994, K. J. Tennessen leg) with characters that are intermediate between Ophiogomphus carolus Needham, 1897 and Ophiogomphus rupinsulensis (Walsh), 1862 is described and illustrated. The specimen appears to be a hybrid based on intermediate character states of 1) color pattern (slightly closer to O. carolus), 2) hamule morphology (shaped slightly more like those of O. carolus), and 3) anal appendage morphology (slightly more like those of O. rupinsulensis).