20 research outputs found

    Contribución al conocimiento de los tricópteros (Insecta: Trichoptera) de Andalucía

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    Based on a comprehensive literature review and new data in this study it states that the number of species of caddisflies registered in Andalusia amounts to 136, included in 53 genera and 17 families. This number accounts for around 38% of the species recorded in the Iberian Peninsula. Catagapetus mclachlani and Oxyethira falcata are new records for Andalusia, as well as Beraea genera. Moreover, the presence of Stenophylax permistus has been confirmed. Besides a new species of Hydropsyche, another of Helicopsyche, and a possible new species of Agapetus are recorded. The most abundant families are Hydroptilidade (18%), Limnephilidae (17%), Leptoceridae (13%) and Hydropsychidae (13%). This update lists 86 new provincial records, significantly improving the inventory of the provinces of Granada, Jaén, Málaga and Seville. The caddisflies in the provinces of Huelva and Almería are barely known, especially the first. The biogeographical study conducted among the eight geographical units shows three distinct domains: Sierra Morena, Betic system and the Guadalquivir River Valley. However, the fauna of the Serranía de Ronda and Campo de Gibraltar seems to depart from this model, showing greater similarity to the Sierra Morena. The Andalusian fauna of caddisflies is mainly composed of elements of European origin (over 50%) and endemism (42%), of which 60% are unique to Andalusia. These data show that, within the Iberian Peninsula, this region stands out as an important area of refuge and speciation center for caddisflies.A partir de una exhaustiva revisión bibliográfica y de nuevos datos aportados en este estudio se establece que el número de especies de tricópteros registradas en Andalucía asciende a 136, incluidas en 53 géneros y 17 familias. Este número equivale aproximadamente al 38% de las especies presentes en la península ibérica. Catagapetus mclachlani y Oxyethira falcata constituyen nuevas citas para Andalucía, así como el género Beraea. Se confirma asimismo la presencia de Stenophylax permistus. Además se menciona una nueva especie de Hydropsyche, otra de Helicopsyche y una probable nueva especie del género Agapetus. Las familias mejor representadas son Hydroptilidade (18%), Limnephilidae (17%), Leptoceridae (13%) e Hydropsychidae (13%). Con esta actualización se han registrado 86 nuevas citas provinciales, mejorando sensiblemente los inventarios de las provincias de Granada, Jaén, Málaga y Sevilla. Los tricópteros de las provincias de Almería y especialmente los de Huelva, permanecen sin embargo muy poco estudiados. El estudio biogeográfico llevado a cabo entre las ocho unidades geográficas propuestas muestra tres grandes dominios diferenciados: Sierra Morena, el Sistema Bético y la depresión del Guadalquivir. Contrariamente a lo que se podría pensar, la tricopterofauna de las sierras Béticas húmedas (Serranía de Ronda y Campo de Gibraltar) parece mostrar una mayor similitud con la de Sierra Morena. La fauna de tricópteros andaluza está formada mayoritariamente por componentes de origen europeo (más del 50%) y endemismos (42%), de los que un 60% son exclusivos de Andalucía. Estos datos muestran que, dentro de la península ibérica, esta región destaca como una zona importante de refugio y centro de especiación para los tricópteros

    Vulnerability to climate change for two endemic high-elevation, low-dispersive Annitella species (Trichoptera) in Sierra Nevada, the southernmost high mountain in Europe

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    This is the peer reviewed version of the following article: Múrria, C., Sáinz-Bariáin, M., Vogler, A.P., Viza, A., González, M. and Zamora-Muñoz, C. (2020), Vulnerability to climate change for two endemic high-elevation, low-dispersive Annitella species (Trichoptera) in Sierra Nevada, the southernmost high mountain in Europe. Insect Conserv Divers, 13: 283-295, which has been published in final form at https://doi.org/10.1111/icad.12387. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.Climate change is predicted to progressively shift habitat characteristics that will alter the distribution and eco-physiological responses of organisms. High-elevation stream insects without extensive dispersal are expected to be highly vulnerable if they are unable to track predicted shifts. Understanding dispersal is therefore crucial to implement practical solutions in conservation. The evolutionary history of the Palaearctic genus Annitella (Trichoptera), the population dynamics and habitat distribution (present and future) of two endemic species (A. esparraguera and A. iglesiasi) confined to Baetic Mountains (SE-Iberian Peninsula) were assessed to gain fundamental insights into species responses to climate warming and to identify populations at risk. Diversification of Annitella was dated to the Pleistocene and was likely associated with southern and extra-Mediterranean refugia located across Europe. The two endemic species belong to distant lineages that preferred similar cold headwater pristine habitats. The range of A. esparraguera was larger than that of A. iglesiasi. Both species showed low genetic diversity in cox1, but only A. esparraguera exhibit locally unique haplotypes, indicating limited gene flow. For A. esparraguera, modelled future habitat suitability showed 88.4% range contraction by 2050 (RCP scenario 8.5) and a displacement of 41.5% of the current potential distribution to higher elevations. Populations of A. esparraguera are predicted to be lost because of the reduction of optimal habitat and limited propensity for tracking future suitable conditions. Beyond the preservation of their current habitat, their conservation might require proactive measures (translocations). Similar predictions may apply to other Mediterranean endemic headwater specialist restricted to isolated high-elevation streams.This research received support from the project ref. 039/2007 funded by the Organismo Autónomo de Parques Nacionales of the Spanish Ministerio de Agricultura, Alimentación y Medio Ambiente, and by the project of the Ministerio de Ciencia e Innovación CGL2007- 61856/BOS. Sierra Nevada National Park and Andalusian Government supplied logistic help and sampling permissions. We are very grateful to John E. Brittain, Alejandra Fernández, Modesto Berbel, János Oláh and all the people who helped us during the field work, and to Anna Papadopoulou and Miquel A. Arnedo for help with phylogenetic analyses. Alain Dohet, Ana Foresight, Bronislaw Szczesny, Ivan Vučković, János Oláh, Jesús Martínez, José Manuel Tierno de Figueroa, Núria Bonada and Miklos Bálint provided specimens for molecular analyses. We thank Núria Bonada for comments that improved the manuscript. CM was supported by a Beatriu de Pinós postdoctoral fellowship (BP-DGR-2011) from Agència de Gestió d’Ajuts Universitaris i de Recerca, Catalunya, and MSB was supported by two predoctoral fellowships from Gobierno de Navarra and the Research Council of Norway (Program: Yggdrasil).S

    Predicting River Macroinvertebrate Communities Distributional Shifts under Future Global Change Scenarios in the Spanish Mediterranean Area

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    Several studies on global change over the next century predict increases in mean air temperatures of between 1°C to 5°C that would affect not only water temperature but also river flow. Climate is the predominant environmental driver of thermal and flow regimes of freshwater ecosystems, determining survival, growth, metabolism, phenology and behaviour as well as biotic interactions of aquatic fauna. Thus, these changes would also have consequences for species phenology, their distribution range, and the composition and dynamics of communities. These effects are expected to be especially severe in the Mediterranean basin due its particular climate conditions, seriously threatening Southern European ecosystems. In addition, species with restricted distributions and narrow ecological requirements, such as those living in the headwaters of rivers, will be severely affected. The study area corresponds to the Spanish Mediterranean and Balearic Islands, delimited by the Köppen climate boundary. With the application of the MEDPACS (MEDiterranean Prediction And Classification System) predictive approach, the macroinvertebrate community was predicted for current conditions and compared with three posible scenarios of watertemperature increase and its associated water flow reductions. The results indicate that the aquatic macroinvertebrate communities will undergo a drastic impact, with reductions in taxa richness for each scenario in relation to simulated current conditions, accompanied by changes in the taxa distribution pattern. Accordingly, the distribution area of most of the taxa (65.96%) inhabiting the mid-high elevations would contract and rise in altitude. Thus, families containing a great number of generalist species will move upstream to colonize new zones with lower water temperatures. By contrast, more vulnerable taxa will undergo reductions in their distribution area.This work was funded by GUADALMED-II (REN2001-3438-C07-06/HID), a project of excellence from “Junta de Andalucía” (RNM-02654/FEDER), the Spanish “Ministerio de Ciencia e Innovación” (CGL2007-61856/BOS), projects and a collaboration agreement between the “Spanish Ministerio de Medio Ambiente, Medio Rural y Marino” and the University of Granada (21.812-0062/8511)

    An evaluation of freshwater monitoring programs in ILTER nodes and mountain national parks: identifying key variables to monitor global change effects

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    Este artículo contiene 30 páginas, 6 tablas, 4 figuras.Identifying and quantifying global change impacts on biotic and abiotic components of ecosystems is critical to promote an effective adaptation that increases the success of conservation strategies. To achieve this goal, global and regional assessment efforts require certain degree of harmonization on local monitoring programs to establish relevant comparisons at different spatio-temporal scales. Otherwise, the lack of harmonization might hinder the detection and assessment on the effects of human impacts. In this work we have compiled information on freshwater monitoring programs located in areas of intensive research and conservation interest: International Long Term Ecological Research (ILTER) nodes and mountain National Parks. We aimed at evaluating the quality and robustness of these programs to assess the impact of global change, addressing from the worldwide to the European and Spanish national scale. Results highlighted that freshwater monitoring programs lack a common strategy to monitor these ecosystems. Even at the continental and national scales, contrasting strategies and level of detail have been historically applied. Water quality, habitat and biodiversity are more commonly monitored than community structure and ecosystem functioning. Monitoring efforts on the Spanish Mountain National parks indicated differences on the targeted aquatic ecosystems. Rivers and lakes received a higher attention, while mires were rarely considered. Our results provide evidence that greater efforts should be directed towards constructing a coordinated strategy to monitor freshwater ecosystems at national, continental, and global scales. This strategy should involve a shared backbone of biophysical and biogeochemical variables for each habitat type on agreed protocols that are implemented across regions and administrative borders. Achieving this will support a substantial advance on the ecological research to further delineate proper conservation strategies to face the challenges imposed by global change.This study was carried out with the financial support of the EU LIFE programme, as part of the project LIFE-DIVAQUA (Proyecto LIFE18 NAT/ES/000121).Peer reviewe
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