Summer use of the tidal freshwaters of the River Seine by three estuarine fish: Coupling telemetry and GIS spatial analysis

Pichon, Céline Le; Coustillas, J.; Zahm, Amandine; Bunel, Marie; Gazeau-Nadin, C.; Rochard, Éric

doi:10.1016/j.ecss.2017.06.028

Cited by 13 publications

(23 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Benthivorous bream are important ecosystem engineers in shallow lakes with high per capita influence of ecosystem dynamics and stability. Although their movements in lowland rivers are relatively well described (Gardner, Deeming, & Eady, 2013;Le Pichon et al, 2017;Lyons & Lucas, 2002), not much is known about their movements between lakes within drainage systems (see however Goldspink, 1978;Lilja, Keskinen, Marjomäki, Valkeajärvi, & Karjalainen, 2003). With their capacity for individual long-distance movements (up to 100 km: e.g., Berg, 1949;Kottelat & Freyhof, 2007;Lucas & Baras, 2008) and long lifespan (10-20 years ;Kottelat & Freyhof, 2007), bream may occupy several lakes during their life (Goldspink, 1978), which may affect local ecosystem dynamics.…”

mentioning

confidence: 99%

Partial nomadism in large‐bodied bream (Abramis brama)

Brodersen

Hansen

Skov

2019

Ecology of Freshwater Fish

View full text Add to dashboard Cite

The recent focus on a common movement ecology paradigm has increased awareness about the importance of distinguishing different movement patterns for understanding their specific impact on animal ecology and evolution. One specific form of movement is nomadism, where animals move between habitats in an arrhythmic fashion. Although not yet described in detail for freshwater fish, nomadism between lakes within drainage systems could affect local lake food webs in an otherwise unpredictable fashion. In this study, we used passive telemetry to describe inter‐lake movements of 1,280 individually tagged adult benthivorous bream (Abramis brama) over nine contiguous years in a drainage system with two paired lakes. The movements can best be described as partial nomadism, where a part of the population is neither resident nor migratory, but instead moves between lakes in a variable, arrhythmic fashion, often with long residency in one lake before moving to the other. We found extensive between‐year variation in the proportion and direction of bream moving, with higher movement propensity being partly associated with lower somatic condition. Notably, movements out of lakes were significantly more in direction of the neighbouring lake than away from the paired lakes, suggesting that at least direction was not random. Since bream are important ecosystem engineers, fluctuating densities of adult bream could affect ecological stability in lakes. Our study suggests that fish populations in interconnected lakes within drainages should not be treated as isolated units, and we discuss this in relation to lake ecology and the importance for lake ecosystem management.

show abstract

mentioning

confidence: 99%

Partial nomadism in large‐bodied bream (Abramis brama)

Brodersen

Hansen

Skov

2019

Ecology of Freshwater Fish

View full text Add to dashboard Cite

show abstract

“…An increase in patch number and shape complexity is generally associated with a larger interface between intertidal and subtidal zones (Figure ). This edge effect allows fish to have permanent water refuges during low tides in close proximity to feeding grounds (Kneib, ; Le Pichon et al, ). Therefore, fish probably respond to a trade‐off between minimizing the risk of predation associated with habitat subdivision and maximizing the availability of low‐tide refuges.…”

Section: Discussionmentioning

confidence: 99%

“…A similar result was noted for diadromous species, the abundance of which was dominated by the European eel, Anguilla anguilla . The spatial distribution of this species is generally restricted to subtidal habitats (Le Pichon et al, ), which explains the poor influence of the intertidal structure on this functional group; however, abundances of both omnivorous and diadromous species were positively related to the distance from the sea, stressing the importance of estuarine habitats located in estuarine upper reaches for these species, even if the intertidal zone is generally narrow (Le Pichon et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, tidal restoration of large sites located close to the sea are expected to promote the overall attractiveness and to enhance the carrying capacity for fish, thus supporting the nursery function of estuarine ecosystems. Nevertheless, the functional role of upper reaches should not be neglected because several fish, including freshwater and some resident species, exhibit tidal movements to feed on oligohaline intertidal areas (Le Pichon et al, ). In estuaries, the phenomenon of coastal squeeze also contributes to the increase in intertidal fragmentation by reducing the width of the lateral intertidal areas.…”

Section: Discussionmentioning

confidence: 99%

“…The estuarine seascape encompassed the whole area subjected to tidal fluctuation, whereas the local seascape was spatially delimited by a radius of 500 m around the trawled areas. This buffer size was chosen to illustrate the environmental context around the sampled area, taking into account the variability of fish species mobility requirements in estuaries (Le Pape & Cognez, ; Le Pichon et al, ; Sheaves, ). An intertidal patch was defined as an area of the seascape lying above water at low tide and under water at high tide, and greater than 10 m in width.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Influence of intertidal seascape on the functional structure of fish assemblages: Implications for habitat conservation in estuarine ecosystems

Teichert

Carassou

Sahraoui

et al. 2018

Aquatic Conservation

View full text Add to dashboard Cite

Habitat loss and fragmentation remain major threats in estuaries, particularly with respect to the erosion of intertidal areas that provide shelter and food resources for numerous fish species. Improving our understanding of the fauna–intertidal seascape relationship is thus of critical importance. Here, the seascapes of 24 tidal estuaries were compared at multiple spatial scales (from estuary to local) to determine how the spatial structure of intertidal patches affects the abundance of several fish functional groups. For the majority of fish groups, our results support the statement that a large intertidal area can support high fish abundance at both of the studied scales; however, the spatial distribution of patches within estuaries, and especially the presence of large intertidal patches close to the estuary mouth, appeared to be an important feature for both marine and estuarine‐resident fish. It was also shown that habitat fragmentation at the estuary scale is associated with a decline in the abundance of several fish groups, probably as a result of reduced intertidal suitability and accessibility. At the local scale, the area of intertidal–subtidal interface was positively related to fish densities, emphasizing the importance of fish having permanently flooded refuges close to feeding grounds. This study provides essential insights to guide conservation and restoration actions for intertidal areas at both estuary and local scales (10–100 m2), by stressing differences in species sensitivity to seascape modification.

show abstract

Temporal patterns of the catadromous thinlip grey mullet migration in freshwater

et al. 2021

View full text Add to dashboard Cite

The thinlip grey mullet (Chelon ramada Risso, 1827) is a catadromous fish that performs massive migrations to freshwater habitats for feeding purposes that can assume a structuring role on riverine ecology due to the biomass involved in these movements. Seasonal movements of thinlip grey mullet through a vertical slot fish pass located in River Mondego (Portugal) were continuously monitored between 2013 and 2017. The extent of trophic migration, population size structure, biomass and the environmental triggers of bi-directional species' migratory activity were analysed. Between March and November of 2013/2014, $2 million and 1 million movements were respectively recorded. From a subsampling approach, the upstream movements between 2015 and 2017 were estimated. Annually, around five hundred thousand upstream movements can occur to provide species access to the upstream freshwater reaches. Movements are exclusively diurnal, and the population composed by young adults in their first year of maturity, yet juveniles and larger fish were present (TL range: 90-540 mm). Upstream movements increased with temperatures above 15 C, reaching a peak at around 20 C coupled with a photoperiod of 15 h. Downstream movements attained the higher rates when temperature dropped from 22 C to 20 C and photoperiod to 13 h. However, under wetter hydrological conditions (as in 2014), discharge flows have a higher influence.These finding provide unique information regarding species migration to freshwater habitats in the Atlantic coast, namely the extended periods spent in such environments, overlapping with the spawning migration period. Additionally, highlights the importance of species' trophic migration both for its life cycle and riverine food-web.

show abstract

Summer use of the tidal freshwaters of the River Seine by three estuarine fish: Coupling telemetry and GIS spatial analysis

Cited by 13 publications

References 58 publications

Partial nomadism in large‐bodied bream (Abramis brama)

Partial nomadism in large‐bodied bream (Abramis brama)

Influence of intertidal seascape on the functional structure of fish assemblages: Implications for habitat conservation in estuarine ecosystems

Temporal patterns of the catadromous thinlip grey mullet migration in freshwater

Contact Info

Product

Resources

About