The dynamics of rivers in relation to fishes and fisheries

Petts, Geoffrey E.; Gosselin, Marie‐Pierre; Gray, J. S.

doi:10.1002/9781118394380.ch3

Cited by 5 publications

(3 citation statements)

References 125 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The habitat mapping is another simplistic element of the modelling, but it served our purpose of producing a map that was approximately representative of the true distribution of habitat for salmon and perch. We believe we achieved this as the mapped habitat is consistent with knowledge that salmon spawn in fast flowing rivers (Armstrong et al, 2003) such as that in the poorly connected subnetworks in the upper parts of the Don Catchment, whereas perch prefer slower flows (Petts et al, 2016) such as those found in the lower parts of the catchment. It was not possible to validate the habitat maps as the salmon was extirpated hundreds of years ago and there is a paucity of data recording the distribution of perch.…”

Section: River Connectivity Modelling As An Aid For Planning Connectisupporting

confidence: 71%

Importance of partial barriers and temporal variation in flow when modelling connectivity in fragmented river systems

Shaw

Lange

Shucksmith

et al. 2016

Ecological Engineering

View full text Add to dashboard Cite

a b s t r a c t(1) The potential for catchment-scale connectivity modelling to help plan the restoration of connectivity in fragmented river systems is not yet well understood. In the present study the importance of two interrelated aspects of such modelling in determining predictions of connectivity are explored: (1) uncertainty in the passability of partial barriers (such as fish passes) and how the passabilities of series of partial barriers combine, and (2) temporal variation in connectivity due to flow. (2) Connectivity for Atlantic salmon (Salmo salar L.) and European perch (Perca fluviatilis L.) are modelled under alternative restoration strategies in the heavily impounded Don Catchment UK using two different methods for simulating the combined passability of series of partial barriers. Catchment-scale hydraulic and connectivity modelling were integrated using a novel method to account for the effect of flow on connectivity, achieved by consideration of flow-fish pass efficiency relationships and the treatment of gaps between habitat patches as partial barrier.(3) Modelled connectivity is very sensitive to uncertainty in barrier passability and the method used to simulate the combined passability of series of partial barriers. Flow also has a strong and complex effect on connectivity, with predicted temporal patterns being particularly dependent on how the combined impact of series of barriers is modelled. The sensitivity of the modelling constrains its capacity to predict the outcome of alternative connectivity restoration strategies. Nevertheless it does serve as a tool to think critically about connectivity restoration. If applied thoughtfully in full awareness of its limitations it can still be used assist in the planning and appraisal of alternative restoration options. (4) The modelling also provides a number of important practical insights. It shows that series of fish passes may be ineffective unless they operate at very high efficiencies. Small changes to flow-fish pass efficiency relationships can have a large effect on temporal patterns in connectivity. Overall fish pass efficiency is comprised of attraction and passage efficiencies which may differ in the extent to which they are determined by random processes. This likely has significant implications for the nature of the combined passability of series of fish passes.

show abstract

Section: River Connectivity Modelling As An Aid For Planning Connectisupporting

confidence: 71%

Importance of partial barriers and temporal variation in flow when modelling connectivity in fragmented river systems

Shaw

Lange

Shucksmith

et al. 2016

Ecological Engineering

View full text Add to dashboard Cite

show abstract

“…We recognize the importance of under standing the environment in which fishes live, feed, reproduce and compete, as well as the natural dynamics of aquatic systems (Sigler & Sigler, 1990). Chapters on freshwater ecosystems and their dynamics (Moss, 2015;Petts et al, 2015;Potter et al, 2015) and recruitment processes (Johnston et al, 2015), however, are covered elsewhere in this book. Given that in recreational fisheries it is impossible to divorce the actions of the fisher and the managers from ecological processes, it is unwise to consider the various com ponents independently (Hunt et al, 2013).…”

Section: Inland Recreational Fisheries As Coupled Social-ecological Systemsmentioning

confidence: 99%

Recreational fisheries in inland waters

Cooke

Arlinghaus

Johnson

et al. 2015

Freshwater Fisheries Ecology

View full text Add to dashboard Cite

Recreational fisheries represent the dominant fisheries sector targeting wild freshwater fishes in all industrialized nations and are becoming increasingly popular in some emerging economies. The socio-economic benefits of recreational fisheries are numerous and substantial. Recreational fisheries through their practices (e.g. overharvest, habitat change, release mortality, stocking and dispersal of non-native fishes), however, have been implicated in negative effects on populations and ecosystems. In inland waters, fish populations also face a variety of threats that are external to the recreational fisheries sector such that recreational fisheries often operate on top of already imperilled resources. This chapter characterizes the scope and magnitude of inland recreational fisheries globally, explores recreational fisheries as a coupled social-ecological system, reviews management strategies, identifies the main issues faced by inland recreational fisheries and discusses the future of recreational fishing in inland waters with an emphasis on research and information needs to ensure their long-term sustainability.

show abstract

“…However, in the era of the Anthropocene, in which human populations have been growing, the need for increased use of traditional ecological services provided by aquatic ecosystems (fish resources, water resources) is constantly growing. Therefore, these activities are now unfavorable for preserving the ecological sustainability of river habitats and river basins as a whole (Petts et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the ecological sustainability of river basins based on the modified the ESHIPPOfish model on the example of the Velika Morava basin (Serbia, Central Balkans)

Simić

Bănăduc

Curtean–Bănăduc

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

This study examines the ecological sustainability of the Velika Morava River Basin (Serbia, Central Balkans) under modern conditions of multiple freshwater stressors, including climate change. The impact of stressors on the ecological services of the river basin is considered, including: drinking water, irrigation, recreation, tourism, ecotourism, and fishing. In order to assess the ecological sustainability of the river basin, a modification of the ESHIPPO model was performed. The essence of the modification is a change to the ES component, which, in the basic model, assesses the degree of ecological specialization of a taxon; and in the modified assessment of the ecological stability of the ecosystem (ESE). The structure of ichthyocenosis is used as the basic biological indicator for the assessment of ESE. The assessment of river basin sustainability was obtained as the difference between ESE and the impact of multiple factors, including: habitat change, invasive species, pollution, human population growth (social factors), and the over-exploitation of resources (HIPPO). The statistical analysis (SOM—Self Organizing Map) highlights the most reliable indicators of both biotic (ichthyocenosis structure elements) and the indicators that best detect the influence of HIPPO factors. The structure of the model is based on general and easily measurable indicators, which enables its application in any river basin in the world. The results of the model indicate that 80% of the studied basin is ecologically unsustainable and that its potential environmental services are greatly reduced.

show abstract

The dynamics of rivers in relation to fishes and fisheries

Cited by 5 publications

References 125 publications

Importance of partial barriers and temporal variation in flow when modelling connectivity in fragmented river systems

Importance of partial barriers and temporal variation in flow when modelling connectivity in fragmented river systems

Recreational fisheries in inland waters

Assessment of the ecological sustainability of river basins based on the modified the ESHIPPOfish model on the example of the Velika Morava basin (Serbia, Central Balkans)

Contact Info

Product

Resources

About