Francesca Rossi

Francesca Rossi
French National Centre for Scientific Research | CNRS · Institut écologie et environnement (INEE)

PhD

About

80
Publications
13,311
Reads
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2,042
Citations
Citations since 2016
22 Research Items
841 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
My work is centered on benthic communities to understand their response to environmental change and determining the consequences on ecosystem functioning. At present my work is focused on seagrass ecosystems. I mainly do experimental field and laboratory studies and I often use stable isotopes at their natural concentrations and as tracers to get inside the trophic relationships between organisms that may modify carbon and nutrient cycling.
Additional affiliations
November 2021 - present
Stazione Zoologica Anton Dohrn
Position
  • research fellow
Description
  • I am part of the associated personnel
January 2010 - January 2022
French National Centre for Scientific Research
Position
  • Senior Researcher
April 2008 - July 2009
Position
  • University of Coimbra

Publications

Publications (80)
Article
Full-text available
Distribution of Earth’s biomes is structured by the match between climate and plant traits, which in turn shape associated communities and ecosystem processes and services. However, that climate–trait match can be disrupted by historical events, with lasting ecosystem impacts. As Earth’s environment changes faster than at any time in human history,...
Article
Drifting macrophyte detritus cast along the shore, often called wrack, can wash around, accumulate in the surf zone and constitute a habitat where fishes forage and/or hide. We compared fish assemblages associated with Posidonia oceanica wrack beds with those associated with bare sand in the surf zone of Sardinia Island (Italy), NW Mediterranean Se...
Article
Full-text available
While considerable evidence exists of biogeographic patterns in the intensity of species interactions, the influence of these patterns on variation in community structure is less clear. Studying how the distributions of traits in communities vary along global gradients can inform how variation in interactions and other factors contribute to the pro...
Article
Seagrass detritus can attract numerous invertebrates as it provides food and substrate within the meadow or in adjacent environments. Nonetheless, several factors could modify the invertebrate response to this habitat. In this study, we tested if epifaunal colonisation of Zostera noltei detritus was related to substrate availability rather than foo...
Article
Full-text available
Understanding the ecological interactions that enhance the resilience of threatened ecosystems is essential in assuring their conservation and restoration. Top‐down trophic interactions can increase resilience to bottom‐up nutrient enrichment, however, as many seagrass ecosystems are threatened by both eutrophication and trophic modifications, unde...
Article
Full-text available
The increasing consideration of gender balance in conservation science and practice has been reflected in the setting of global commitments. Yet, women remain under-represented in science and conservation decision-making. We compiled and analyzed data on the representation of women in hiring, publishing, funding, and leadership positions in Europea...
Article
Human activities degrade and fragment coastal marine habitats, reducing their structural complexity and making habitat edges a prevalent seascape feature. Though habitat edges frequently are implicated in reduced faunal survival and biodiversity, results of experiments on edge effects have been inconsistent, calling for a mechanistic approach to th...
Article
Full-text available
The global distribution of primary production and consumption by humans (fisheries) is well-documented, but we have no map linking the central ecological process of consumption within food webs to temperature and other ecological drivers. Using standardized assays that span 105° of latitude on four continents, we show that rates of bait consumption...
Article
Marine noise pollution (MNP) can cause a multitude of impacts on many organisms, but information is often scattered and general outcomes difficult to assess. We have reviewed the literature on MNP impacts on Mediterranean fish and invertebrates. Both chronic and acute MNP produced by various human activities - e.g. maritime traffic, pile driving, a...
Article
Full-text available
The impact of invasive species on recipient communities can vary with environmental context and across levels of biological complexity. We investigated how an established invasive seaweed species affected the biomass, eco-physiology, carbon and nitrogen storage capacity of native seaweeds at sites with a different environmental setting due to a per...
Article
Full-text available
Seagrass leaf litter decomposition is a key component of marine carbon flow driven by both biotic and abiotic factors, including water movement. In this study, we analyse Posidonia oceanica litter decomposition and invertebrate colonization in three sites with different hydrodynamics in a coastal basin. Litterbags were put on the sea bed along a gr...
Poster
Full-text available
In the Mediterranean Sea, Zostera noltei (Hornemann, 1832) meadows constitute an important part of the intertidal shallow ecosystems in estuaries, bays and lagoons. Most of the primary production of these ecosystems is not directly used but is channelled to higher trophic levels as detritus. Acting as a faunal magnet, the seagrass detritus hosts an...
Article
Despite the importance of coastal ecosystems for the global carbon budgets, knowledge of their carbon storage capacity and the factors driving variability in storage capacity is still limited. Here we provide an estimate on the magnitude and variability of carbon stocks within a widely distributed marine foundation species throughout its distributi...
Poster
Full-text available
The documented and worldwide loss of seagrasses calls for effective measures to anticipate their decline and improve conservation. It has been suggested that seagrass response to increasing stress can be often non linear and show sudden decline. Ecological theory also proposes that systems close to decline become more stochastic and slow in recover...
Preprint
Full-text available
Seagrass habitat complexity can determine species diversity and abundance, through, for instance, changes in the availability of microhabitats, refuge from predators or changes in the intensity and frequency of abiotic stressors. Human-related perturbations cause seagrass habitat degradation and, therefore, reduce its complexity, thereby affecting...
Preprint
Full-text available
Seagrass habitat complexity can determine species diversity and abundance, through, for instance, changes in the availability of microhabitats, refuge from predators or changes in the intensity and frequency of abiotic stressors. Human-related perturbations cause seagrass habitat degradation and, therefore, reduce its complexity, thereby affecting...
Article
Full-text available
Latitudinal gradients in species interactions are widely cited as potential causes or consequences of global patterns of biodiversity. However, mechanistic studies documenting changes in interactions across broad geographic ranges are limited. We surveyed predation intensity on common prey (live amphipods and gastropods) in communities of eelgrass...
Article
Full-text available
Conditions of low oxygen, as well as strong fluctuations in dissolved oxygen concentrations, can substantially affect marine benthic communities. An early assessment of the status of a community after such an event is of fundamental ecological importance and may help to inform management measures. This paper investigates the response of a foraminif...
Article
Full-text available
Canopy-forming seaweeds are important coastal ecosystem engineers that sustain diverse multi-trophic assemblages. Their losses, with the subsequent reduction in habitat complexity, have been documented across many parts of the world and are often attributed to climate change and other anthropogenic factors. The general aim of the present study was...
Article
Full-text available
Ecosystem engineers change abiotic conditions, community assembly and ecosystem functioning. Consequently, their loss may modify thresholds of ecosystem response to disturbance and undermine ecosystem stability. This study investigates how loss of the bioturbating lugworm Arenicola marina modifies the response to macroalgal detrital enrichment of s...
Article
Full-text available
Hypoxia represents one of the major causes of biodiversity and ecosystem functioning loss for coastal waters. Since eutrophication-induced hypoxic events are becoming increasingly frequent and intense, understanding the response of ecosystems to hypoxia is of primary importance to understand and predict the stability of ecosystem functioning. Such...
Data
Top panel: Oxygen penetration in the undisturbed sediments and the disturbed sediments at opening of the plots on March 30th, 2005. Bottom panel: Temporal variation of pore water oxygen concentration at 500 µm depth in the recovering and undisturbed sediments. Error bars represent one standard error. (DOCX)
Data
Macrobenthos species present in the recovering and undisturbed sediments at the study site (Paulinapolder, 51° 21′ 24′′ N, 3° 42′ 51′′ E). Feeding traits (surface deposit feeder (SDF), subsurface deposit feeder (SSDF), suspension feeder (SF), omnivores (O), predators/scavengers (P), motility traits (living in a fixed tube (T), limited movement (L),...
Data
Results of Mauchley tests for sphericity. (DOCX)
Data
Scatterplots showing relationships between species richness, total abundance, total biomass and community bioturbation potential and ecosystem processes. Filled symbols indicate significant relations at p<0.05, as deduced from Distance based Linear Models. (DOCX)
Data
Effects of the applied defaunation method on abiotic properties. Significance levels of comparisons between undisturbed and disturbed sediments (n = 3) at day 0 after removing of the sheets are obtained from One-way Analysis of Variance (ANOVA). (DOCX)
Article
Full-text available
The decay of non-native and native seaweed mixing may modify sediment biogeochemistry and organic matter transfers within benthic food webs according to their composition and biomass. The non-native species Sargassum muticum was deliberately added to the sediment of an intertidal sandflat at different biomass and mixed to the native species Ulva sp...
Article
Full-text available
Wrack (dead, washed-up seaweed and seagrass) buried in soft substrata may increase the organic content and alter the physical structure of sediments. These effects may influence the composition and structure of macrofaunal assemblages in the sediment. Such influences can be expected to vary according to the type and amount of wrack as well as the p...
Article
An experiment was performed to test an alternative dredging strategy for the Westerschelde estuary. Clean sand dredged from the navigation channel was disposed seawards of an eroding intertidal flat in order to modify morphology and hydrodynamics, improving the multi-channel system with ecologically productive shallow water habitat. Five years of i...
Article
Native and exotic seaweeds frequently lie on the beach and sustain part of the benthic food web. However, the role of exotic seaweeds as food sources for beach consumers has been poorly studied. We studied the temporal and spatial variability in the trophic significance of the invasive brown seaweed Sargassum muticum on sandy beaches. We measured t...
Article
Full-text available
Invasion of alien species poses serious threats to many ecosystems. Despite the potential of Sargassum muticum to spread and invade new areas, no attention has been given to the Study of variability of structural or morphological features across different spatial scales. We employed a hierarchical sampling design to examine patterns of spatial vari...
Article
Full-text available
In estuaries, eelgrass meadows contribute to fundamental ecosystem functions of estuaries, providing food to several predators and buffering the negative effects of eutrophication. We asked whether the presence of the eelgrass Zostera noltii decreased the nitrogen concentration in the overlying water, affected the sources of nitrogen sequestrated b...
Article
Talitrid amphipods are the most abundant herbivores on exposed sandy beaches. Despite their important role as trophic intermediates between macrophytes and higher levels (i.e. insect and bird) of beach food webs, very little information is available on their feeding patterns. The main aim of this study was to investigate intraspecific differences i...
Article
Intense disturbance may locally destroy patches of habitat and shape the landscape into a mosaic of reassembling communities. The development of ecosystem properties during such community reassembly is poorly understood. In intertidal bare sediments, trophic relations between microphytobenthos or heterotrophic bacteria and macrofauna invertebrates...
Article
Full-text available
We investigated which variables, including environmental variables and food availability, could predict the spatial distribution and dynamics of benthic macrofauna on an intertidal flat. A time series of macrobenthos and sediment grain size samples was complemented by time series of microphytobenthos and saltmarsh vegetation biomass and sediment gr...
Article
Full-text available
Species loss or gain can change ecosystem functions according to the ecological context (e.g. assemblage composition, habitat heterogeneity and disturbance regime). We document how the suspension-feeder cockle Cerastoderma edule (L.) affects some properties of intertidal sediments during macrofauna recovery after deliberately induced anoxia. Forty...
Article
Full-text available
The effect of physical disturbance in the form of trampling on the benthic environment of an intertidal mudflat was investigated. Intense trampling was created as unintended side-effect by benthic ecologists during field experiments in spring and summer 2005, when a mid-shore area of 25×25m was visited twice per month by on average five researchers...
Article
In intertidal sediments, burial and decomposition of macroalgal detritus can fuel the sediment of carbon (C) and nitrogen (N), which can be either promptly mineralised or assimilated to enter the food web. This study investigates the transfer of algal-derived C and N to the sediment and to the infauna feeding primarily on benthic diatoms. Thalli of...
Article
Full-text available
In marine sediments, cages are widely used to detect effects of predation on infauna. Artifacts due to the use of cages have been, instead, poorly estimated. In this study we have analysed the changes in macrofauna and in sediment composition when cages of different mesh sizes are used to exclude predators. In a shallow micro-tidal flat, the effect...
Article
Patches of dead seaweeds can deposit, bury, and age into the sediment. Decomposition and release of algal-derived nutrients can influence patterns of distribution of benthic organisms. Here, I investigated how small-scale burial of Ulva spp. affected spatial variation of macrofauna in intertidal sediment. I deliberately buried Ulva detritus under t...
Article
Coastal lagoons can be characterised by strong environmental changes along the outer marine-inner brackish gradient, which are reflected in the patterns of distribution of organisms and composition of assemblages. Close to the sea the assemblages are dominated by marine animals, while in the innermost confined areas, there would be estuarine taxa a...
Article
Full-text available
Deposit-feeders are common components of macrofaunal assemblages in intertidal soft sediments. Predation has been considered to have a central role in affecting their distribution and population dynamics. This study investigates the effect of epibenthic predators on deposit-feeders, inhabiting the shallow layers of the sediment (surface and subsurf...
Article
Deposit and suspension feeders can switch feeding behavior and show variations in feeding mode as individuals pass through life-cycle stages. Stable carbon and nitrogen isotopes were used to trace changes in diet of the tellinid bivalves M. balthica (facultative deposit feeder) and C. edule (obligatory suspension feeder), according to their size cl...
Article
Full-text available
Deposit and suspension feeders can switch feeding behavior and show variations in feeding mode as individuals pass through life-cycle stages. Stable carbon and nitrogen isotopes were used to trace changes in diet of the tellinid bivalves M. balthica (facultative deposit feeder) and C. edule (obligatory suspension feeder), according to their size cl...
Article
Full-text available
This study analyses the spatial distribution of burrowing by the soldier crab Mictyris longicarpus (Mictyridae) in relation to the topography of intertidal sandflats. Four different locations were sampled in Port Jackson and Botany Bay (Sydney, New South Wales, Australia). In each location, abundances of crabs and the proportion of juvenile crabs v...
Article
In coastal intertidal flats, assemblages of deposit-feeders often vary seasonally and according to the availability of food in sediments. In the mudflat where this study has been done, the deposit-feeder assemblage changed after a sharp increase of fresh detritus, which occurred in summer 1997. The number of the animals increased and abundances of...
Article
Assemblages on top of and underneath rocks in intertidal boulder-fields have been investigated in several studies, although macrobenthic assemblages in soft-sediments below these rocks have generally been ignored. The model where the presence of a boulder changes the sediment below it and/or the composition of the soft-bottom benthic assemblages li...
Article
Availability of food in the sediment can play an important role in determining the dynamics of deposit feeders. Generally the abundance of deposit feeders during winter and spring is related to an increase in the nutritive value of the sediment due to the concurrent microalgal peaks. This work investigated, in 1998, the seasonal variability pattern...
Article
Full-text available
Wrack (dead, washed-up seaweed and seagrass) buried in soft substrata causes increased organic content and alters the physical structure of sediments. These effects may influence the types and relative abundances of species in the sediment. Such influences can be expected to vary according to the type and organic content of the sediment. In this st...
Article
Full-text available
The importance of changes in nutritive value of the sediment in regulating the dynamics of the small deposit-feeding polychaete Streblospio shrubsolii (Buchanam, 1890) was examined. First, fluctuations in the population dynamics of S. shrubsolii and in the nutritive content of the sediment were studied on a seasonal scale. Subsequently, a manipulat...
Article
Full-text available
From summer 1996 through to autumn 1997 the seasonal changes of a macrofaunal assemblage, the nutritional value of organic matter (as content of lipids, proteins and carbohydrates) and the content of chlorophyll a in a Mediterranean mudflat were analysed. Sediment for macrofauna and biochemical analyses (chlorophyll a, lipids, proteins, and carbohy...
Article
1. This paper describes the long-term dynamics of the macrozoobenthic communities in the Orbetello Lagoon, one of the largest Western Mediterranean lagoons, which was affected by eutrophication processes that began in the 1980s and peaked with two severe anoxic crises in 1992 and 1993. 2. The aim of the present research was first to establish the c...