@misc{13357, abstract = {{Determination key of German damselfly and dragonfly exuviae (Odonata) – An identification key for the exuviae and final-instar larvae of all 82 damselfly and dragonfly species recorded in Germany to date is presented. The introduction describes methods and search strategies for collecting exuviae, presents phenological aspects being important for exuviae surveys, and introduces methods for recording exuviae. Information is given on the storage, transport and shipping of exuviae and the preservation of larvae. Materials and procedures for the preparation and identification of exuviae and larvae are described. The terminology used in the key to describe the morphological features of exuviae and larvae is given by presenting figures and a glossary. In the main section the determination key for exuviae of all 82 damselfly and dragonfly species recorded in Germany is presented. The breakdown is done down to the species level, except for the following species and species pairs, as no reliable distinctive features are known for them so far: Coenagrion puella/C. pulchellum and Sympecma fusca/S. paedisca, as well as Sympetrum meridionale, whose distinguishing features from S. sanguineum and S. striolatum are not yet sufficiently known. The key baises on the currently known and published distinctive features for exuviae and final-instar larvae, focusing on differentiation characteristics that have proven to be robust and reliable and are also easily recognisable for beginners in exuviae identification. }}, author = {{Lohr, Mathias}}, booktitle = {{Libellula Supplement}}, issn = {{0723-6514}}, keywords = {{Libellenkunde, Odonatologie, Odonata, Bestimmungsschlüssel}}, pages = {{1--96}}, publisher = {{Gesellschaft deutschsprachiger Odonatologen}}, title = {{{Bestimmungsschlüssel für die Exuvien der Libellen Deutschlands (Odonata)}}}, volume = {{18}}, year = {{2025}}, } @misc{12272, abstract = {{Leucorrhinia pectoralis and Coenagrion hastulatum (Odonata) in the low mountain ranges of Lower Saxony, Germany – two species with syntopic occurrences but oppos-ing trends? – Coenagrion hastulatum and Leucorrhinia pectoralis both mainly inhabit mesotrophic-dystrophic waters with riparian reed vegetation in Lower Saxony, but show opposing population trends throughout the state. For both species, the current database of the NGO Working Group of Dragonflies in Lower Saxony and Bremen was used to ana-lyse whether population changes can be observed in the highest low mountain ranges of the state – the Harz and the Solling region. The calculated trends especially for the Solling are influenced by a lack of consistency in survey activities in the different periods considered and are therefore not very robust. In the Harz, a moderate decline in C. has-tulatum has been recorded, which presumably results from the silting up and overgrowth of some small water bodies formerly colonised by the species. This in turn is the result of increasing summer drought in recent years and thus climate change. A similar situation can be assumed for the Solling, where water bodies formerly used for reproduction by C. hastula tum have repeatedly dried up in recent years. A decline in the species solely due to the rise in temperature, as is assumed for the lowlands of Lower Saxony, cannot be detected in either the montane Harz or the submontane Solling. For L. pectoralis, which is regarded as a climate change winner in Central and Northern Europe, different popu-lation trends are calculated in the two regions. No increase is recognisable in the Harz; observations are still primarily limited to single individuals. In contrast, the species ap-pears to be increasing in the Solling, although what was previously its “best” water body with reproduction has failed in recent years due to drying out. However, the calculated very strong positive trend is methodologically overestimated, as Odonata inventories in the Solling have been largely limited to targeted surveys of this Habitats Directive spe-cies over the past ten years. The species is certainly much more common in the Solling, situated in lower altitudes, than in the Harz, although the Harz has various water bodies with structures suitable for the species. At least for the Harz, the question of an opposing trend development of C. hastula tum and L. pectoralis must be ruled out according to the current state of knowledge. In the submontane zone of the Solling, on the other hand, the trend analysis indicates an increase in L. pectoralis and a shift in abundance between the two species in favour of L. pectoralis. The importance of the Harz and Solling as refugia for C. hastulatum, which is now classified as threatened with extinction in the lowlands of Lower Saxony, should be emphasised. Due to gaps in the data, studies are necessary for both species in the Solling, especially in areas where no surveys have been carried out for more than ten years. Finally, some recommendation are given on how to promote both species in the Harz and Solling.}}, author = {{Baumann, Kathrin and Lohr, Mathias}}, booktitle = {{Libellula Supplement 17 - Festschrift zum 75. Geburtstag von Reinhard Jödicke}}, issn = {{0723-6514}}, pages = {{87--107}}, publisher = {{GdO }}, title = {{{Leucorrhinia pectoralis und Coenagrion hastulatum (Odonata) in niedersächsischen Mittelgebirgen - zwei Arten mit syntopen Vorkommen, aber gegenläufiger Entwicklung?}}}, volume = {{17}}, year = {{2024}}, } @misc{12270, author = {{Jödicke, Reinhard and Lohr, Mathias}}, booktitle = {{Libellula}}, issn = {{0723-6514}}, number = {{3/4}}, pages = {{91--94}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen }}, title = {{{Checkliste der Libellenfauna Deutschlands (Odonata). Stand: 15.02.2024.}}}, volume = {{42}}, year = {{2023}}, } @article{6626, author = {{Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V.. Supplement }}, number = {{16}}, pages = {{177--188}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen }}, title = {{{Selysiothemis nigra new for continental France (Odonata: Libellulidae)}}}, volume = {{Supplement}}, year = {{2021}}, } @article{6564, author = {{Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. : Supplement}}, pages = {{103--107}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen }}, title = {{{Blaubereiftes Weibchen von Crocothemis erythraea (Odonata: Libellulidae)}}}, volume = {{15}}, year = {{2019}}, } @article{6659, author = {{Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{98 -- 101}}, title = {{{Erythromma lindenii (Selys, 1840)}}}, year = {{2015}}, } @article{6660, author = {{Ott, J. and Conze, K.-J. and Günther, Alicia and Lohr, Mathias and Mauersberger, R. and Roland, H.-J. and Suhling, F.}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{395 -- 422}}, title = {{{Rote Liste und Gesamtartenliste der Libellen Deutschlands mit Analyse der Verantwortlichkeit}}}, volume = {{2}}, year = {{2015}}, } @article{6664, author = {{Lohr, Mathias and Mauersberger, R. and Brockhaus, T.}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{146 -- 149}}, title = {{{Aeshna isoceles (Müller, 1767)}}}, year = {{2015}}, } @article{6665, author = {{Clausnitzer, H.-J. and Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{178 -- 181}}, title = {{{Boyeria irene (Fonscolombe, 1838)}}}, year = {{2015}}, } @article{6666, author = {{Lohr, Mathias and Martens, A. and Weihrauch, F.}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{182 -- 185}}, title = {{{Brachytron pratense (Müller, 1764)}}}, year = {{2015}}, } @article{6667, author = {{Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{310 -- 313}}, title = {{{Sympetrum flaveolum (Linnaeus, 1758)}}}, year = {{2015}}, } @article{6668, author = {{Moritz, R. and Roland, H.-J. and Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula : Zeitschrift der Gesellschaft deutschsprachiger Odonatologen (GdO) e.V. }}, number = {{Libellula Supplement 14}}, pages = {{318 -- 321}}, title = {{{Sympetrum meridionale (Selys, 1841)}}}, year = {{2015}}, } @article{6669, author = {{Fiebig, Isabel and Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{32}}, pages = {{115 -- 139}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen}}, title = {{{Libellengemeinschaften oligotroph-saurer Sekundärgewässer im Solling, Süd-Niedersachsen (Odonata)}}}, year = {{2013}}, } @article{6558, author = {{Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{1/2}}, pages = {{87--107}}, title = {{{Libellenbeobachtungen in Südportugal (Odonata)}}}, volume = {{24}}, year = {{2005}}, } @article{6776, author = {{Leifeld, Dirk and Lohr, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{3/4}}, pages = {{222--231}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen}}, title = {{{Erstfund von Gomphus flavipes an der Oberweser}}}, volume = {{19}}, year = {{2000}}, } @article{6787, author = {{Gerken, Bernd and Wienhöfer, Mathias}}, issn = {{0723-6514}}, journal = {{Libellula}}, number = {{3/4}}, pages = {{249--267}}, publisher = {{Gesellschaft Deutschsprachiger Odonatologen}}, title = {{{Biozönologische Betrachtungen an Libellen einer französischen Flußaue im Rahmen eines tierökologischen Geländepraktikums}}}, volume = {{12}}, year = {{1993}}, }