Tag: fish

Coastal and marine, The Applied Ecologist community

From blind amoeba to Nemo: the evolution of fish (and vertebrate) vision

This blog is part of our colourful countdown to the holiday season where we’re celebrating the diversity and beauty of the natural world. In this post, Martin Luehrmann of The University of Queensland takes us on a journey through the development of sight through the evolution of fish and early vertebrates. Imagine waking up and the world is black, your eyelids won’t open. You are … Continue reading From blind amoeba to Nemo: the evolution of fish (and vertebrate) vision

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Freshwater, Research summaries

Go with the flow

Exploring the importance of autocorrelation in flow-ecology management, Associate Editor, Angela Strecker discusses the recent article by Bruckerhoff et al., Flow–ecology relationships are spatially structured and differ among flow regimes. In ecology, it is widely accepted that stream flow is a master variable for fishes. Human alterations to rivers have changed the flow regime significantly, often dampening the natural variability and changing the timing of … Continue reading Go with the flow

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Designing waterfronts that work for fish and people

In this post Stuart Munsch discusses his new article ‘Effects of shoreline armouring and overwater structures on coastal and estuarine fish: opportunities for habitat improvement‘ Shallow ecosystems facilitate the development and survival of juvenile fish. These areas are productive and provide fish with an abundance of small invertebrates produced in intertidal substrate, backshore vegetation, and the water column. In addition, predators are rare or ineffective … Continue reading Designing waterfronts that work for fish and people

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New techniques for Atlantic sturgeon conservation

In this post Associate Editor Verena Trenkel discusses a paper she recently handled from Michael Melnychuk and colleagues ‘Informing conservation strategies for the endangered Atlantic sturgeon using acoustic telemetry and multi-state mark–recapture models‘ According to the International Union for Conservation of Nature (ICUN), ten out 17 sturgeon species are currently critically endangered. Among the two species listed as least concern is Atlantic sturgeon which occurs … Continue reading New techniques for Atlantic sturgeon conservation

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Using reef fish movement to inform marine reserve design

In this post Rebecca Weeks discusses her recent paper ‘Using reef fish movement to inform marine reserve design‘. The majority of marine protected areas in Pohnpei (Federated States of Micronesia) are too small to protect the species that people care about most. But when livelihoods depend on fishing, establishing large no-take areas is a big challenge. Overfishing and unsustainable fishing practices are amongst the greatest threats … Continue reading Using reef fish movement to inform marine reserve design

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Fine-scale salmon diversity sustains fisheries and supports food security of indigenous communities

A new study from Holly Nesbitt and Jonatahn Moore at Simon Fraser University shows that high biodiversity in salmon fisheries supports the food security of indigenous people. Salmon-folios Instead of analyzing market returns of different financial portfolios, this study examined indigenous fisheries with different “salmon-folios”. Like a well-balanced financial portfolio that can smooth market fluctuations, fisheries that caught a more diverse portfolio of salmon populations … Continue reading Fine-scale salmon diversity sustains fisheries and supports food security of indigenous communities

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New spatio-temporal model improves the ability of fishery managers to set sustainable catch limits

In this post Associate Editor Andre Punt discusses a paper he recently handled by James T. Thorson, Jason Jannot and Kayleigh Somers ‘Using spatio-temporal models of population growth and movement to monitor overlap between human impacts and fish populations‘ In many jurisdictions, including the U.S., conservation management of fish stocks involves comparing catches with estimates of an overfishing limit (OFL). The OFL is a catch … Continue reading New spatio-temporal model improves the ability of fishery managers to set sustainable catch limits

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Coastal and marine, Perspectives, Practitioners

Jazz-band ecosystem monitoring

In this post Adel Heenan and Kelvin Gorospe discuss their recent Practitioner’s Perspective article ‘Ecosystem monitoring for ecosystem-based management: using a polycentric approach to balance information trade-offs‘ Long-term ecosystem monitoring can be used to take the pulse of an ecosystem, much like a routine check-up with your doctor. Medical analogies like this are common in our field, as we work for the Pacific Reef Assessment and Monitoring Program (RAMP) … Continue reading Jazz-band ecosystem monitoring

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Research summaries

Environmental DNA and crayfish management

In this post Matthew Dougherty discusses his recent paper ‘Environmental DNA (eDNA) detects the invasive rusty crayfish Orconectes rusticus at low abundances‘ Tangled buoy strings, lost traps, pinched fingers, sweaty brows, and boats smeared with beef liver: these images define the experiences of countless managers and scientists who use baited trapping to monitor crayfish invasions, especially in lakes of the upper Midwest, USA. While these … Continue reading Environmental DNA and crayfish management

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The effects of seals on Scottish cod stock recovery

In this post Robin Cook discusses his recent paper with Steven Holmes and Robert Fryer ‘Grey seal predation impairs recovery of an over-exploited fish stock’ Both seals and humans prey on fish and so potentially compete for the same resource. Such competition is vividly illustrated in the controversy surrounding the effect grey seals have on cod in a number of regions including Canada and the … Continue reading The effects of seals on Scottish cod stock recovery

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