Rocco Tiberti

Rocco Tiberti
Dept. of Earth and Environmental Sciences -DSTA

PhD
University of Pavia

About

65
Publications
18,084
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701
Citations
Citations since 2016
40 Research Items
601 Citations
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Introduction
Prior to entering the field of aquatic ecology, I spent some time with studying amphibians, reptiles and birds. After having been attracted to alpine ecosystems I focused on the ecology of alpine lakes. My purpose is to understand food web functioning in the field. Most of my studies have been carried out the Gran Paradiso National Park. At the moment I am coordinating a LIFE project LIFE20 NAT/ES/000369 RESQUE ALPYR about the conservation of high mountain lakes. https://liferesquealpyr.eu/

Publications

Publications (65)
Article
Mountains are an essential component of the global life-support system. They are characterized by a rugged, heterogenous landscape with rapidly changing environmental conditions providing myriad ecological niches over relatively small spatial scales. Although montane species are well adapted to life at extremes, they are highly vulnerable to human...
Article
Full-text available
Introduced fish are a widespread ecological threat in originally fishless high mountain lakes. However, basic distribution data are largely missing for most high mountain regions. Using time‐consuming standard methods (e.g. Nordic standard fishing nets) to assess fish distribution and relative densities at a relevant spatial scale can be impractica...
Article
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Small fish species such as minnows (Phoxinus sp.) are introduced into mountain lakes by anglers that use them as live bait for fishing salmonids, that were previously introduced in these naturally fishless habitats. Introduced fish severely impact native biota but minnows are nevertheless released believing to provide forage for game fish, i.e., sa...
Article
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The effects of the COVID-19 lockdown on deposition and surface water chemistry were investigated in an area south of the Alps. Long-term data provided by the monitoring networks revealed that the deposition of sulfur and nitrogen compounds in this area has stabilized since around 2010; in 2020, however, both concentrations and deposition were signi...
Poster
Full-text available
Within the activities for the implementation of the NEC Directive, aimed to the reduction of atmospheric pollutant emission, 8 high altitude alpine lakes in the N-W Italian Alps have been selected for monitoring . In this poster, the sampling campaigns, the adopted monitoring protocols and the dataset developed are described, as well as some prelim...
Article
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A high frequency monitoring (HFM) system for the deep subalpine lakes Maggiore, Lugano and Como is under development within the EU INTERREG project SIMILE. The HFM system is designed to i) describe often neglected but potentially relevant processes occurring on short time scale; ii) become a cost-effective source of environmental data; and iii) str...
Article
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Stocking game fish into originally fishless mountain systems is a major threat for high-altitude lakes and the inhabiting native species. The adoption of stocking and fishing bans and the implementation of eradication actions have proven to be effective in stopping this biological invasion. However, there is still little appetite for such measures/...
Article
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1. Invasive alien species are among the most important threats to biodiversity. Plans for their eradication have been implemented worldwide but estimating residual population size and eradication probability to assess removal success is complicated by the imperfect detection of residual individuals. 2. Most methods to assess residual abundance and...
Article
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Whilst poorly dispersing taxa such as amphibians may have limited scope to track recent and rapid climate change by means of large range shifts, they may follow their climate envelope with short elevational shifts in mountain areas. Such elevational shifts are poorly documented by empirical data for amphibians. In this study, we analysed a 15-year...
Article
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High mountain lakes provide essential ecosystem services and have a high conservation value. Therefore, understanding how glacier retreat will affect their ecological functioning and water quality is crucial. Here, we tested how shallow high mountain lakes having different glacial influence differ in their abiotic main features and food-web structu...
Conference Paper
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Educational outreach can be achieved through responsible Whale Watching (WW). Here, we investigate the factors affecting customers’ satisfaction on WW experience in the Strait of Gibraltar Important Marine Mammal Area. Between July and September 2017 and 2018, guides of the WW company TURMARES Tarifa submitted 398 questionnaires to customers random...
Article
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Mountain lakes provide some fundamental ecosystem services (i.e., water supply for drinking and energy production) and have an enormous aesthetic and conservation value. Ecological knowledge on mountain lakes, however, is still scarce and limited to a few geographical areas and mainly to abiotic features. To fill this gap, a limnological campaign w...
Article
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Introduced fish can have detrimental effects on native biota inhabiting alpine freshwaters with the extent of their impact depending on variables such as habitat features. The present study aims to compare the recovery of macroinvertebrate communities following a fish eradication campaign in a mountain lake (Lake Dres, 2087 m a.s.l., Western Italia...
Experiment Findings
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Article
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High mountain lakes (HML) provide essential ecosystem services, have tremendous conservation and aesthetic value, and are good model ecosystems to study the ecological consequences of global change. Multi-year (2008–2017) chemical data from 25 HML from the Gran Paradiso National Park (Western Italian Alps) were used to address two specific objectiv...
Article
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Fish stocking is a serious threat to originally fishless mountain lakes. We used non-chemical eradication methods (i.e. gillnetting and electrofishing) in four high mountain lakes in the Gran Paradiso National Park (Western Italian Alps) to eradicate alien brook trout Salvelinus fontinalis. Data of amphibians, macroinvertebrates, zooplankton, chlor...
Article
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In order to mitigate the ecological impact of alien species there is a need to control or eradicate those species that are causing a loss of biodiversity. However, such conservation actions can lack public support. In their editorial to The European Zoological Journal (Vol. 85, pp. 227-228), Fenoglio and co-authors observe that public opinion is li...
Article
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1. Because of ancient introductions, some alien species can be erroneously considered native. Salvelinus alpinus survived as a post glacial relict in the northern European Alps, whereas documented ancient introductions question its native status in a few mountain lakes from the southern Alps (Trentino Alto Adige, Italy). Regardless of its uncertain...
Article
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A portion of the terrestrial subsidies to lentic habitats consists of arthropods. In high mountain, originally fishless lakes, terrestrial arthropods are an important seasonal food resource for introduced fish. Here we investigate how brook trout Salvelinus fontinalis can alter the input of terrestrial arthropods in ten high mountain lakes contrast...
Article
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1. Fish introductions into originally fishless mountain lentic habitats can affect native amphibians at different spatial scales. Introductions are often associated with local extinctions, but they can also affect amphibian metapopulations at a landscape level, intercepting amphibians when they move into reproductive and overwintering sites, preven...
Article
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Stocking programmes for recreational angling are primarily responsible for the spread and ecological impact of introduced fish in high-altitude, originally fishless lakes. In 2013, the Gran Paradiso National Park started an eradication campaign of brook trout by intensive gill-netting. Local anglers were invited to attend two angling sessions to st...
Chapter
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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 in...
Article
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Brook trout Salvelinus fontinalis have been used worldwide to stock fishless alpine lakes, negatively affecting native biota. Understanding its spatial ecology in invaded ecosystems can provide information to interpret and contrast its ecological impact. We opportunistically used capture points of brook trout gillnetted during an eradication campai...
Article
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Emerging insects are important nutrient vectors for lake-to-land linkages, but they are affected by fish predation. We manipulated the fish density in four high altitude lakes in connection with a brook trout eradication project. We used a paired benthic and surface funnel trap design to test whether fish density affects abundance, size, and propor...
Poster
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Alien fish have been introduced into once fishless mountain lakes worldwide, seriously affecting native biota. In the Gran Paradiso National Park (GPNP, Western Italian Alps), the brook trout (Salvelinus fontinalis) was introduced in several alpine lakes, where it dramatically affected the entire ecosystems, thus leading the GPNP to undertake an er...
Poster
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Established in 1921, the Gran Paradiso National Park (Western Italian Alps, Torino) is the oldest protected area in Italy and one of the oldest in the world. During its nearly century-old history it was able to conserve most of the terrestrial alpine biodiversity and have the invaluable merit of having saved from extinction the Alpine ibex (Capra i...
Article
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Introduced fish represent a major threat for aquatic ecosystems and species and their impact on semiaquatic vertebrates, such as amphibians, has been extensively studied. On the other hand, little is known about their impact on semiaquatic mammals, such as water shrews (Neomys spp., Soricidae), although small mammals have been reported in their die...
Article
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Introduced fish are a major threat for high altitude aquatic habitats and Salvelinus fontinalis have been widely used throughout the Alps for stocking lakes and rivers. Understanding its feeding ecology is a basic, but essential tool for interpreting its impact. To assess which factors determine the diet of S. fontinalis we analyzed more than 500 s...
Article
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The diet of Rana temporaria (Linnaeus, 1758) was studied in the Gran Paradiso National Park, at and above the local timberline, up to the upper limit of its altitudinal distribution. A total of 128 adult frogs (length range: 3.7-9.0 cm) were captured from 2010 to 2012. Stomach content from 46 individuals was obtained by stomach flushing, of which 6...
Article
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Mount Guglielmo in the Italian Alps is an ancient transhumance area where man-made ponds for watering cattle are an ancestral component of the landscape and represent the most important breeding sites for common frogs (Rana temporaria) in the study area. Egg-masses in 30 mountain ponds from the Mount Guglielmo were counted from 2005-2015 to monitor...
Conference Paper
Full-text available
Alien fish have been introduced into once fishless mountain lakes worldwide, seriously affecting biota. In the Gran Paradiso National Park (GPNP, Western Italian Alps), the impact of introduced brook trouts fish (Salvelinus fontinalis) on biodiversity in high altitude alpine lakes was quantified, and was so strong as to lead the GPNP to undertake a...
Conference Paper
Full-text available
We studied the diet of common frog (Rana temporaria) in the alpine tundra above 2000 m a.s.l. in the Gran Paradiso National Park. A total of 137 adult frogs (length range: 4.3-8.3 cm) were captured from 2010 to 2012, each frog underwent stomach flushing and we collected 46 stomach contents (the 66% of the stomachs was empty). No frog has been injur...
Article
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The present study provides new distribution data of the herpetofauna of the Mount Guglielmo (1957 m a.s.l., southern Alps, Brescia), above the 1000 m a.s.l contour line. 726 observations have been collected over a 11 years long monitoring campaign (2005-2015). Five species of amphibians (Salamandra salamandra, Triturus carnifex, Bombina variegata,...
Article
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Transhumance – the summer transfer of livestock to highland pastures – is a traditional practice in the European Alps and is considered an integral part of the mountain ecosystem. Mountain lakes are generally oligotrophic systems and are particularly sensitive to the nutrient input caused by livestock. The aim of the present study was to quantify t...
Article
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Introduced fish seriously affect zooplankton communities in mountain lakes, often leading to the loss of large species. Selective predation is recognized to be the ultimate cause of such a strong impact. Here we describe the selection of zooplankton preys by analyzing the stomach contents of more than 300 brook trout (Salvelinus fontinalis) inhabit...
Article
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Zooplanktonic microcrustaceans of the Daphnia pulex group appear highly differentiated at high altitudes as a result of alternative colonizations and quick local adaptation to harsh environments. In particular, the occurrence of deeply differentiated mountain lineages of European Daphnia pulicaria (EuPC) is highly related to glacial advances and re...
Article
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In alpine regions climatic change will alter the balance between water sources (rainfall, ice-melt, snowmelt, and groundwater) for aquatic systems, particularly modifying the relative contributions of meltwater, groundwater and rain to both rivers and lakes. While these changes are expected to have implications for alpine aquatic ecosystems, little...
Data
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This thesis aims at understanding the functioning of high altitude lakes ecosystems in Gran Paradiso National Park. The entire work is based on field data from 20 alpine lakes, collected with a non-manipulative approach. The organisms inhabiting alpine lakes are subjected to strong environmental pressures, resulting in low diversity and simple foo...
Conference Paper
Full-text available
Alien fish species have been introduced into naturally fishless mountain lakes worldwide, with negative consequences for native amphibians. In the Gran Paradiso National Park (Western Italian Alps) the presence of introduced fish (brook trout, Salvelinus fontinalis) is a factor of ecological exclusion for common frog (Rana temporaria), compromising...
Article
Full-text available
Fish introduction is a major threat to alpine lake biota leading to the loss of native species and to the degeneration of natural food-webs. This study provides an extensive investigation on the impact of the introduced fish Salvelinus fontinalis on the native communities of alpine lakes in the Gran Paradiso National Park. We compared the macroinve...
Article
Full-text available
We studied hydrochemistry and plankton dynamics in two remote Alpine lakes: lake Nivolet superiore (2530 m asl) and lake Trebecchi superiore (2729 m asl) in the Gran Paradiso National Park (Western Italian Alps) in summer 2009. The aim of this study was to enhance the understanding of natural ecological dynamics in the pelagic habitat of Alpine lak...
Article
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We discuss a simplified mathematical model for alpine lake ecosystems, describing the summer (i.e. ice-free period) dynamics of phosphorus, phytoplankton, three zooplankton compartments and fish abundance. Model output is compared with measurements of total phosphorus, chlorophyll-a and zooplankton biomass recorded in twelve high-altitude mountain...
Article
Full-text available
The Gran Paradiso National Park (GPNP) has recently approved an eradication plan, financed within the LIFE+ project BIOAQUAE (Biodiversity Improvement of Aquatic Alpine Ecosystems), to restore some mountain lakes impacted by the introduction of brook trout ( Salvelinus fontinalis ). This extensive eradication project involves the use of intensive g...
Article
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The avoidance of visually feeding fish has long been considered as the primary driver of diel vertical migration of zooplankton. The diurnal vertical distribution of Cyclops gr. abyssorum, Arctodiaptomus alpinus, and Daphnia gr. longispina from 13 alpine lakes with fish (Salvelinus fontinalis) and without, was compared in order to understand whethe...
Article
Full-text available
Alien fish species have been introduced into naturally fishless mountain lakes worldwide, with negative consequences for native fauna. This study describes the impact of introduced Brook trout (Salvelinus fontinalis) on Common frog (Rana temporaria) in the Gran Paradiso National Park (Western Italian Alps). We conducted an extensive, six years long...
Conference Paper
Full-text available
Recentemente, nel Parco Nazionale del Gran Paradiso (Alpi Italiane occidentali), sono state scoperte popolazioni di Daphnia pigmentata di grandi dimensioni (lunghezza massima: 3,4 mm). Morfologicamente ed ecologicamente, esse risultano appartenere a Daphnia middendorffiana (Fischer, 1851), ampiamente distribuita nella regione artica, ma con alcune...
Article
Full-text available
Zooplankton vertical migration was described in four high altitude lakes in Gran Paradiso National Park (Northern Italy) during 2008 summertime. The authors succeeded in describing the vertical distribution of 6 species: diel vertical migrations were observed in the case of adult crustacean species (Cyclops gr. abyssorum, Arctodiaptomus alpinus and...
Article
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Daphnia middendorffiana has an arctic, circumpolar distribution, with some isolated southerly populations restricted to mountainous areas, including the Alps. In this paper, new records of Daphnia middendorffiana on the Alps are reported. The species was regularly recorded in several samples collected from 2006 to 2009 in four high altitude lakes i...
Article
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The diurnal vertical distribution of zooplankton have been compared on a sunny and on a cloudy day in two shallow, oligotrophic and fishless alpine lakes, exploring the role of cloud cover in shaping zooplankton movements. UV ray avoidance is considered the ultimate reason for zooplankton vertical migration in the lakes, which are naturally devoid...
Article
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The authors describe the first case of parasitism on anuran amphibian, Rana temporaria, by the freshwater leech Helobdella stagnalis, in a mountainous area of northwestern Italy. The presence of skin abrasions and haemorrhages attributable to leech attack discards the hypothesis of a simple phoretic relationship between leech and frog.
Article
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Twelve Alpine lakes located in the Gran Paradiso National Park, in the western Italian Alps, were sampled during the ice free period in 2008 and analysed for the main morphological, chemical and physical variables in relation to the characteristics of their watershed, with the aim to create a reference database for present and future ecological stu...
Article
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Periodic mass die-offs of Rana temporaria tadpole populations have occurred in the ponds of prealpine mountain areas of Brescia (northern Italy) since the early 2000s. The author reports some observational data and analytical results from three sites: tadpoles from mortality events had erythema, especially on the legs, suggestive of septicemia. Bac...