Colonization patterns and densities of zebra musselDreissena in muddy offshore sediments of Western Lake Erie, Canada

Coakley, John P.; Brown, Glenn R.; Ioannou, S. E.; Charlton, Murray N.

doi:10.1007/bf02406901

Cited by 15 publications

(1 citation statement)

References 3 publications

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“…The introduction of dreissenid bivalves into North American freshwaters in the 1980s and 1990s created visible aggregations of mussels on lake bottoms and provided a need for assessment, for which videography was explored as a potentially cost-effective tool. Dreissena in the Great Lakes have been studied using side scan sonar (Coakley et al, 1997) and underwater video in the nearshore zone (Custer and Custer, 1997;Lietz et al, 2015;Mehler et al, 2018;Ozersky et al, 2009, Ozersky et al, 2011. Incorporation of remote sensing methods into designs of benthic surveys allows much larger bottom areas to be sampled than surveys with traditional bottom grabs or SCUBA diving, provides valuable information on the distribution patterns of Dreissena at various spatial scales, and may significantly increase the precision of mussel population size estimates.…”

Section: Introductionmentioning

confidence: 99%

Benthic video image analysis facilitates monitoring of Dreissena populations across spatial scales

Karatayev

Mehler

Burlakova

et al. 2018

Journal of Great Lakes Research

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Section: Introductionmentioning

confidence: 99%

Benthic video image analysis facilitates monitoring of Dreissena populations across spatial scales

Karatayev

Mehler

Burlakova

et al. 2018

Journal of Great Lakes Research

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Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

McCabe¹,

Beekey²,

Mazloff³

et al. 2006

Aquatic Conservation

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ABSTRACT1. Lake sturgeon (Acipenser fulvescens) are threatened or endangered throughout much of their range. Juvenile sturgeon utilize sandy and silty habitats extensively during their growth. Invasive zebra mussels change the nature of sandy and silty habitats because they settle on and coat the habitat with the shells of living and dead individuals. The potential impacts of this increased habitat complexity on lake sturgeon is unknown.2. Juvenile lake sturgeon habitat choice was assessed in laboratory experiments, and zebra mussel impact on the foraging success of juvenile lake sturgeon on three different prey species was measured.3. Sturgeon foraging on chironomids was virtually eliminated by 95% zebra mussel cover of the sand floor of the foraging arena, and 50% cover reduced foraging significantly. Foraging on more mobile prey items (amphipods and isopods) was essentially eliminated by either 95% or 50% zebra mussel cover of the arena floor. In habitat choice experiments, sturgeon avoided the zebra-musselcovered habitat more than 90% of the time.4. This combination of zebra mussel avoidance and reduced foraging in the presence of zebra mussels may be detrimental to sturgeon restocking programmes utilizing smaller sturgeon in zebra-mussel-infested waterways.

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Mapping serpulid worm reefs (Polychaeta: Serpulidae) for conservation management

Moore

Bates

Mair

et al. 2008

Aquatic Conservation

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ABSTRACT1. This study describes investigations into mapping of the biogenic reefs produced by the polychaete worm, Serpula vermicularis, for the purposes of conservation management.2. Reef distribution throughout Loch Creran, Scotland, was mapped using a diver transect technique and was found to be restricted to a peripheral band, with a mean upper limit of distribution of 2.7 m. The mean lower limit was found to decrease with distance from the mouth of the loch, with a lower limit of 9.3 m in the lower basin rising to 6.6 m in the upper basin; the likely influence of a corresponding decrease in the upper depth distribution of muds is discussed.3. Through determination of the mean width of the reef band and coastline length, the areal extent of the reef band was estimated as 108 ha, revealing Loch Creran to harbour the most extensive known development of S. vermicularis reef habitat in the world.4. The utility of sidescan sonar in mapping serpulid reefs was examined in four of the major embayments. Reef material appeared as characteristic patterning on the sonargrams, with the morphology of individual larger reefs being discernible.5. Sidescan sonar was found to be particularly valuable for the identification and monitoring of threats to the conservation of serpulid reefs. Sidescan sonar surveying was found to facilitate identification of loss of habitat extent resulting from anthropogenic activities such as moorings, aquaculture installations and dredging and can also be used to monitor the potentially damaging activity of otter trawling. Further improvements in the mode of deployment of sidescan sonar are discussed.

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Colonization patterns and densities of zebra musselDreissena in muddy offshore sediments of Western Lake Erie, Canada

Cited by 15 publications

References 3 publications

Benthic video image analysis facilitates monitoring of Dreissena populations across spatial scales

Benthic video image analysis facilitates monitoring of Dreissena populations across spatial scales

Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

Mapping serpulid worm reefs (Polychaeta: Serpulidae) for conservation management

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