Influence of the aquatic vegetation landscape on larval fish abundance

Massicotte, Philippe; Bertolo, Andrea; Brodeur, Philippe; Hudon, Christiane; Mingelbier, Marc; Magnan, Pierre

doi:10.1016/j.jglr.2015.05.010

Cited by 32 publications

(18 citation statements)

References 53 publications

(58 reference statements)

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“…Fluctuations in reproductive output can also occur owing to a large number of spawners in a given reproductive season, or even a small number finding ideal conditions for spawning, offspring development, or both. Features such as the presence of aquatic macrophytes (Massicotte et al, ), tributary morphometry (Brown & Coon, ), reduced competition for food resources (Shuai et al, ), optimal water clarity, physicochemical conditions, and the potential for primary production in backwaters (Werner, ) are factors that contribute to the advantages of a specific spawning tributary for a species.…”

Section: Discussionmentioning

confidence: 99%

Tributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná River

Silva

Miranda

Makrakis

et al. 2019

Aquatic Conservation

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1. Conservation of fish assemblages in severely impounded rivers has often focused on providing longitudinal and lateral connectivity along the main stem. Less attention has been given to tributaries, some of which remain unimpounded.2. This study shows that the biodiversity of ichthyoplankton in tributaries to the largest reservoir in the Paraná River, Brazil, is similar to that of tributaries of the few remaining unimpounded stretches of the Paraná River.3. Annual and seasonal variability in discharge within and among tributaries attracts and supports a diverse mix of species in each spawning season.4. Tributaries enrich the fish biodiversity of the entire system by providing a variety of environmental conditions, access to spawning habitat, refugia for early life stages, and by promoting ecological heterogeneity. Thus, tributaries can mitigate the adverse influence of an impounded main stem. 5. Tributaries also support populations of endangered and threatened species. A focus on tributaries offers conservation alternatives that are more feasible given the scale and large number of impoundments constructed on the main stem.6. Conservation in the main stem may focus on maintaining passage through dams and access to large floodplains. Conversely, in tributaries conservation may focus on managing the quality of inflows from catchments, preserving suitable instream habitats and flows, and preserving access to smaller but more numerous floodplains.

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Section: Discussionmentioning

confidence: 99%

Tributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná River

Silva

Miranda

Makrakis

et al. 2019

Aquatic Conservation

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“…Submerged Aquatic Vegetation (SAV) is a key component of aquatic ecosystems as it creates habitat for fauna, regulates water flow, stabilizes sediments, and contributes to biogeochemical cycling [1][2][3][4][5][6]. SAV refers to all plants that obligately grow underwater, though they may have floating or emersed reproductive organs.…”

Section: Introductionmentioning

confidence: 99%

A Review of Remote Sensing of Submerged Aquatic Vegetation for Non-Specialists

Rowan

Kalácska

2021

Remote Sensing

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Submerged aquatic vegetation (SAV) is a critical component of aquatic ecosystems. It is however understudied and rapidly changing due to global climate change and anthropogenic disturbances. Remote sensing (RS) can provide the efficient, accurate and large-scale monitoring needed for proper SAV management and has been shown to produce accurate results when properly implemented. Our objective is to introduce RS to researchers in the field of aquatic ecology. Applying RS to underwater ecosystems is complicated by the water column as water, and dissolved or suspended particulate matter, interacts with the same energy that is reflected or emitted by the target. This is addressed using theoretical or empiric models to remove the water column effect, though no model is appropriate for all aquatic conditions. The suitability of various sensors and platforms to aquatic research is discussed in relation to both SAV as the subject and to project aims and resources. An overview of the required corrections, processing and analysis methods for passive optical imagery is presented and discussed. Previous applications of remote sensing to identify and detect SAV are briefly presented and notable results and lessons are discussed. The success of previous work generally depended on the variability in, and suitability of, the available training data, the data’s spatial and spectral resolutions, the quality of the water column corrections and the level to which the SAV was being investigated (i.e., community versus species.)

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“…These types of microhabitat features were not recorded in the present study, but may have influenced space‐use dynamics of certain fish species – in particular, small‐bodied fishes (e.g. small species or juvenile fishes; Paradis, Bertolo, Mingelbier, Brodeur, & Magnan, ; Massicotte et al, ; Stahr & Shoup, ). Similar to Opinicon Lake, differences in mean transect water depth were detected between lake zones within Newboro Lake and may have also influenced species richness between zones.…”

Section: Discussionmentioning

confidence: 66%

Evidence of fish spillover from freshwater protected areas in lakes of eastern Ontario

Zolderdo

Abrams

Reid

et al. 2019

Aquatic Conservation

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Research has identified numerous conservation benefits attributed to the use of marine protected areas (MPAs), yet comparatively less is known about the effectiveness of freshwater protected areas (FPAs). This study assessed multiple long‐standing (>70 years active) intra‐lake FPAs in three lakes in eastern Ontario, Canada, to evaluate their potential conservation benefits. These FPAs were intended initially to protect exploited populations of largemouth bass (Micropterus salmoides (Lacépède, 1802)), but since their establishment no empirical data have been collected to evaluate the effectiveness of FPAs for protecting bass or the broader fish community. A comparative biological census of fish species abundance, biomass and species richness was conducted using snorkelling surveys within FPAs, along the bordering transition zones, and in more distant non‐protected areas of the lake that had similar habitats to the FPAs. In general, the FPAs yielded benefits that were most obvious (in terms of abundance and biomass) for the focal protected species (i.e. largemouth bass) as well as several shiner species. Largemouth bass and shiner abundance and biomass were highest in the FPA, lowest in the distant non‐protected areas, and intermediate in the transition zone. Species richness was also highest in the FPAs in two of the three lakes. Collectively, these results support the use of FPAs as a viable and effective conservation strategy that extends beyond simply limiting the exploitation of a target species. Beyond the benefits afforded to fish within the FPA, evidence of spillover in adjacent areas was also observed, which is promising. Additional research is needed on the effectiveness of FPAs in a variety of regions and water‐body types facing various threats in an effort to understand when, where and how to best use FPAs to benefit aquatic biodiversity.

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Influence of the aquatic vegetation landscape on larval fish abundance

Cited by 32 publications

References 53 publications

Tributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná River

Tributaries as biodiversity preserves: An ichthyoplankton perspective from the severely impounded Upper Paraná River

A Review of Remote Sensing of Submerged Aquatic Vegetation for Non-Specialists

Evidence of fish spillover from freshwater protected areas in lakes of eastern Ontario

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