High mountain conservation in a changing world Catalogue en ligne

High mountain conservation in a changing world / Jordi Catalán (2017)

Titre :	High mountain conservation in a changing world
Type de document :	Électronique
Auteurs :	Jordi Catalán ; Josep Maria Ninot i Sugrañes (1955-) ; Mercè Aniz
Editeur :	Springer
Année de publication :	2017
Collection :	Advances in global change research num. 62
Importance :	413 p.
ISBN/ISSN/EAN :	978-3-319-85796-1
Langues :	Anglais (eng)
Catégories :	[LOTERRE-Biodiversité] Changement climatique [CBNPMP-Géographique] Pyrénées
Résumé :	Unique case studies from the Pyrenees providing a view of the main processes involved in the ecosystem shifts in the high mountains. In-depth research into the high mountain experiencing increasing temperatures causing shifts related to atmospheric chemical deposition, land use, and species invasion. A study of how high mountains hold the largest areas for nature conservation, and in many countries are still considered a wilderness.
Lien pérenne :	DOI : 10.1007/978-3-319-55982-7
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148571

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Why should we preserve fishless high mountain lakes? / Marc Ventura (2017)

est un extrait de High mountain conservation in a changing world / Jordi Catalán (2017)

Titre :	Why should we preserve fishless high mountain lakes?
Type de document :	Extrait d'ouvrage
Auteurs :	Marc Ventura ; Rocco Tiberti ; Teresa Buchaca ; Danilo Buñay ; Ibor Sabás ; Alexandre Miró
Editeur :	Springer
Année de publication :	2017
Collection :	Advances in global change research num. 62
Importance :	181-205
Langues :	Anglais (eng)
Catégories :	[CBNPMP-Thématique] Lac d'altitude [CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude
Résumé :	High mountain lakes are originally fishless, although many have had introductions of non-native fish species, predominantly trout, and recently also minnows introduced by fishermen that use them as live bait. The extent of these introductions is general and substantial often involving many lakes over mountain ranges. Predation on native fauna by introduced fish involves profound ecological changes since fish occupy a higher trophic level that was previously inexistent. Fish predation produces a drastic reduction or elimination of autochthonous animal groups, such as amphibians and large macroinvertebrates in the littoral, and crustaceans in the plankton. These strong effects raise concerns for the conservation of high mountain lakes. In terms of individual species, those adapted to live in larger lakes have suffered a higher decrease in the size of their metapopulation. This ecological problem is discussed from a European perspective providing examples from two study areas: the Pyrenees and the Western Italian Alps. Species-specific studies are urgently needed to evaluate the conservation status of the more impacted species, together with conservation measures at continental and regional scales, through regulation, and at local scale, through restoration actions, aimed to stop further invasive species expansions and to restore the present situation. At different high mountain areas of the world, there have been restoration projects aiming to return lakes to their native fish-free status. In these areas autochthonous species that disappeared with the introduction of fish are progressively recovering their initial distribution when nearby fish-free lakes and ponds are available.
Lien pérenne :	DOI : 10.1007/978-3-319-55982-7_8
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148572

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Chapitre 8 (2017)

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Towards a microbial conservation perspective in high mountain lakes / Emilio O Casamayor (2017)

est un extrait de High mountain conservation in a changing world / Jordi Catalán (2017)

Titre :	Towards a microbial conservation perspective in high mountain lakes
Type de document :	Extrait d'ouvrage
Auteurs :	Emilio O Casamayor
Editeur :	Springer
Année de publication :	2017
Collection :	Advances in global change research num. 62
Importance :	157-180
Catégories :	[CBNPMP-Thématique] Biodiversité [CBNPMP-Thématique] Enjeux de conservation des lacs d'altitude [CBNPMP-Thématique] Lac d'altitude
Résumé :	Microorganisms are fundamental components to maintain the ecological integrity of any ecosystem. Microscopic organisms have been, however, mostly excluded in conservation studies and microbiology has been developed as a scientific discipline lacking a natural history background. The detailed genetic studies carried out in the Aigüestortes i Estany de Sant Maurici National Park and recent works in the mostly scarce literature, show that the mostly oligotrophic and highly diluted waters in high mountain lakes hold a larger microbial phylogenetic uniqueness than expected and are reservoirs of large evolutionary potential, providing an overall natural history perspective for alpine archaea, bacteria, fungi and protists. Microbes arise as an important part of the biological richness of these environments that should be considered as a fundamental component of the natural heritage. Microbial ecologists are now closer than ever to deal with conservation biology concepts such as biological richness, extinction, biotic interactions, and ecosystems management. First insights emerge for establishing the microbial tolerance to different environmental conditions, for estimating which is the potentiality of survival and dispersal abilities in the different species, and for highlighting how the underappreciated microbiota will respond to stresses and disturbances brought by the global change. Warming and eutrophication may jeopardise the most idiosyncratic microbial populations that have found in these (ultra)oligotrophic and diluted systems the most appropriate conditions to thrive. Environmental managers and lawyers, citizen, and stakeholders, in general, have now access to scientifically informed advice for the unseen microbial life in the unexpectedly rich high mountain microbial ecosystems.
Lien pérenne :	DOI : 10.1007/978-3-319-55982-7_7
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150766

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Chapitre 7 (2017)

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Livre (2017)

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