Effects of global climate change on freshwater biota: A review with special emphasis on the Italian situation

Fenoglio, Stefano; Bo, Tiziano; Cucco, Marco; Mercalli, Luca; Malacarne, Giorgio

doi:10.1080/11250000903176497

Cited by 62 publications

(49 citation statements)

References 75 publications

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“…The southern Mediterranean areas are of special concern because of their intrinsic geo-climatic characteristics, increased human development, biological invasions, land-use, and particularly high susceptibility to climate change (Fenoglio et al 2010). Against this background, the low number of studies focussing on freshwater mussels of the Italian Peninsula is a significant shortfall.…”

Section: Discussionmentioning

confidence: 99%

Lifting the curtain on the freshwater mussel diversity of the Italian Peninsula and Croatian Adriatic coast

et al. 2017

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Freshwater mussels of the order Unionida have been dramatically declining globally. Despite their ecological importance, conservation of these animals has been hindered by unresolved taxonomy and a lack of data on the distribution and status of populations, especially in southern Europe. Although the Italian Peninsula has been noted as a centre of endemism and one of the major refugia of the glacial ages for several taxa, few studies have been performed on the genetic diversity of Unionida. Most importantly, the taxonomic status of several freshwater mussel populations of the Italian Peninsula is still unresolved. Here we present the first comprehensive dataset for the Unionida of the region spanning Italy and the coastal Croatian region (west of the Dinaric Alps). In total, Communicated by Robert Cowie.This article belongs to the Topical Collection: Coastal and marine biodiversity. (COI, 16S and 28S). Genetic analyses were performed to understand major phylogenetic and phylogeographic patterns. Seven species were detected: three Anodonta species (A. anatina, A. cygnea and A. exulcerata), two Unio species (U. mancus and U. elongatulus), Microcondylaea bonellii, and the invasive Sinanodonta woodiana. The presence of three endemic species (A. exulcerata, U. elongatulus and M. bonellii) confirms the importance of the region as a centre of endemism for freshwater mussels. The Apennine Mountains act as an important biogeographic barrier. Electronic supplementary material

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Section: Discussionmentioning

confidence: 99%

Lifting the curtain on the freshwater mussel diversity of the Italian Peninsula and Croatian Adriatic coast

et al. 2017

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“…Severe repercussions are also expected on riverine biotic communities (Lake, 2000;Fenoglio et al, 2010). Indeed, lentification and fragmentation of freshwater habitats have consequences on the metabolism of the biotic communities and, in particular, of the primary producers.…”

Section: Introductionmentioning

confidence: 99%

Suggestions for diatom-based monitoring in intermittent streams

Falasco

Piano

Bona

2016

Knowl. Manag. Aquat. Ecosyst.

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-Over the last decades, river lentification processes and droughts have been dramatically spreading worldwide, due to global and local drastic changes due to human activities. Under this scenario, the evaluation of physical disturbance caused by intermittency and droughts has become more and more relevant. In this research, we compare samples collected in Mediterranean streams following both traditional and experimental approaches with the aim of understanding if diatom indices calculated from a new sampling strategy could provide additional information for the physical disturbance assessment. Moreover, we also evaluated the response of functional metrics. Our results demonstrated that even though an enhanced sampling method better reflects hydrological disturbance than the traditional one, diatom indices do not detect it. Conversely, functional traits proved to be important metrics for the hydrological disturbance assessment. In particular, benthic diatom chlorophyll a showed significantly lower values in sections more subject to droughts. With respect to ecological guilds, the motile taxa proved to be linked to depositional areas, which resulted important microhabitats (MHs) to be explored in rivers affected by lentification. Including different MHs in the sampling process improves the information we can obtain from the analysis of the diatom community and presents important implications in documenting species distribution and autecology.Keywords: diatom indices / functional metrics / hydrological disturbance / intermittency / Mediterranean streams Résumé -Suggestions pour la biosurveillance avec les diatomées benthiques dans les rivières intermittentes. Au cours des dernières décennies, les processus de ralentissement des rivières et les sécheresses ont été considérablement répandus dans le monde entier, en raison de changements drastiques globaux et locaux dûs aux activités humaines. Selon ce scénario, l'évaluation des perturbations physiques causées par intermittence et les sécheresses est devenue de plus en plus pertinente. Dans cette recherche, nous comparons les échantillons prélevés dans des rivières méditerranéennes suivant des approches traditionnelles et expérimentales dans le but de comprendre si les indices diatomées calculés à partir d'une nouvelle stratégie d'échantillonnage pourraient fournir des informations supplémentaires pour l'évaluation des perturbations physiques. De plus, nous avons également évalué la réponse des paramètres fonctionnels. Nos résultats ont montré que, même si une méthode d'échantillonnage améliorée reflète mieux les perturbations hydrologiques que la méthode traditionnelle, les indices diatomées ne les détectent pas. À l'inverse, les traits fonctionnels se sont avérés être des paramètres importants pour l'évaluation des perturbations hydrologiques. En particulier, la chlorophylle a des diatomées benthiques a montré des valeurs significativement plus faibles dans les sections plus exposées à la sécheresse. En ce qui concerne les guildes écologiques, les taxons mo...

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“…Nitrogen deposition, warming, and shifts in precipitation and runoff patterns, acting at a global scale, must be added to these threat categories (Fenoglio et al 2010). The global extent of human alteration can be illustrated by an example regarding damming: over half (172 out of 292) of the world's large rivers are affected by dams, including the eight most biogeographically diverse (Nilsson & Berggren 2000).…”

Section: Threatsmentioning

confidence: 99%

Italian freshwater biodiversity: status, threats and hints for its conservation

Fochetti¹

2012

Italian Journal of Zoology

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Freshwater makes up 3% of the planet's water, 67% of which is 'trapped' in glaciers and polar caps. Lakes, ponds, streams, etc. (excluding subterranean waters) constitute approximately 6.5% of freshwater, which is less than 0.2% of the earth water and 0.8% of its surface. Nevertheless, beyond supporting the livelihood of billions of people, especially in poor countries, according to the different estimates 100,000/126,000 animal species are known for inland waters, from 6 to 9.5% of the total animal described. As far as Italy is concerned, there are 5496 freshwater animal species out of 55,732 total; that is, around 10% of its fauna (terrestrial species are 41,923, while marine are 8330, several eurialine species being considered as present in both marine and freshwater environments). This fauna is highly specific: we can estimate a percentage of Italian freshwater endemics that could exceed 10%. Unfortunately, freshwater species are extinct or at risk with loss rates which could be of the same extent of those of previous transitions between geological epochs like the Pleistocene-to-Holocene. In Italy it is difficult to evaluate the conservation status and trends of aquatic faunas due to the lack of previous studies. The analysis of selected taxa seems to depict a critical situation. Besides, inland waters only recently have been addressed by conservation politics and only a reduced part of their fauna is involved in preservation measures. As regards protection politics in Italy, we can safely say that those regarding freshwater animals are badly addressed: out of 841 protected species only 100 are from inland waters, and only 15 of them are invertebrates.Proposals and priorities for conservation and management of Italian freshwaters are discussed.

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Effects of global climate change on freshwater biota: A review with special emphasis on the Italian situation

Cited by 62 publications

References 75 publications

Lifting the curtain on the freshwater mussel diversity of the Italian Peninsula and Croatian Adriatic coast

Lifting the curtain on the freshwater mussel diversity of the Italian Peninsula and Croatian Adriatic coast

Suggestions for diatom-based monitoring in intermittent streams

Italian freshwater biodiversity: status, threats and hints for its conservation

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