History of and Advances in Barriers as an Alternative Method to Suppress Sea Lampreys in the Great Lakes

Lavis, Dennis S.; Hallett, Andrew; Koon, Ellie M.; McAuley, Tom C.

doi:10.1016/s0380-1330(03)70500-0

Cited by 104 publications

(64 citation statements)

References 16 publications

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“…Similarly, our approach could be adapted to identify cases where it would be beneficial to retain existing barriers or construct new barriers to inhibit the spread of invasive species and pathogens (37). In the GLB, for example, more than 60 barriers have been constructed or modified to control the spread of invasive sea lampreys (38).…”

Section: Resultsmentioning

confidence: 99%

Enhancing ecosystem restoration efficiency through spatial and temporal coordination

Neeson

Ferris

Diebel

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

136

151

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In many large ecosystems, conservation projects are selected by a diverse set of actors operating independently at spatial scales ranging from local to international. Although small-scale decision making can leverage local expert knowledge, it also may be an inefficient means of achieving large-scale objectives if piecemeal efforts are poorly coordinated. Here, we assess the value of coordinating efforts in both space and time to maximize the restoration of aquatic ecosystem connectivity. Habitat fragmentation is a leading driver of declining biodiversity and ecosystem services in rivers worldwide, and we simultaneously evaluate optimal barrier removal strategies for 661 tributary rivers of the Laurentian Great Lakes, which are fragmented by at least 6,692 dams and 232,068 road crossings. We find that coordinating barrier removals across the entire basin is nine times more efficient at reconnecting fish to headwater breeding grounds than optimizing independently for each watershed. Similarly, a one-time pulse of restoration investment is up to 10 times more efficient than annual allocations totaling the same amount. Despite widespread emphasis on dams as key barriers in river networks, improving road culvert passability is also essential for efficiently restoring connectivity to the Great Lakes. Our results highlight the dramatic economic and ecological advantages of coordinating efforts in both space and time during restoration of large ecosystems.

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Section: Resultsmentioning

confidence: 99%

Enhancing ecosystem restoration efficiency through spatial and temporal coordination

Neeson

Ferris

Diebel

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

136

151

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“…In sea lamprey control programs, barriers have been an important non-chemical approach used to prevent 595 migrating adults from accessing spawning habitats, with the general aims of disturbing their spawning potential and reducing the number of streams used for ammocoete production (Lavis et al, 2003). The effective use of barriers has also reduced the use of lampricide applications 600 and other control program costs (Hunn and Youngs, 1980).…”

Section: Management Of Migration Blockagesmentioning

confidence: 99%

“…The effective use of barriers has also reduced the use of lampricide applications 600 and other control program costs (Hunn and Youngs, 1980). Several types of barriers have been used to block migration routes, including the "standard" low-head barriers, adjustable-crest barriers, velocity barriers, and electrical barriers (Lavis et al, 2003).…”

Section: Management Of Migration Blockagesmentioning

confidence: 99%

“…These were frequently constructed on streams in strategic locations throughout the Great Lakes basin, with around 61 installed or modified between 1958 and 1999, with others added in 90 streams after 1999 (Lavis et al, 2003). Approximately 20 dams were also estab-615 lished for other purposes that have since been modified to also prevent adult movement, and there are also a number of existing dams and traditional fish passes that limit P. marinus access to spawning habitat (Lavis et al, 2003;McLaughlin et al, 2007).…”

mentioning

confidence: 99%

“…Where barrier 625 removal is impossible, then modification to barrier height could be a more sustainable solution to blockages in European rivers. Evidence from the Great Lakes suggests that modifications to low-head barriers in Europe would need to ensure a vertical drop of less than 30 cm 630 (headwater to tailwater) to provide the maximal capacity for P. marinus passage (Lavis et al, 2003). The vertical height of the fixed-crest barriers should be considered carefully; based on adjustable-crest barriers in the Great Lakes, the crest should be lowered during the period of 635 upstream migration to make them passable and also during the period of downstream movement of larvae/juveniles.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Sea LampreyPetromyzon marinusBiology and Management Across Their Native and Invasive Ranges: Promoting Conservation by Knowledge Transfer

Andreou

Britton

2016

Reviews in Fisheries Science & Aquaculture

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Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning‐migration obstructions

Nunn

Taylor

Cowx

et al. 2017

Aquatic Conservation

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1. Recent advances in the understanding of lamprey migrations have led to concerns over the impacts of obstructions on the demography of many species. This study investigated sea lamprey (Petromyzon marinus) larvae (ammocoetes) in two adjacent but contrasting rivers, both designated Special Areas of Conservation under the EC Habitats Directive (92/43/EEC), one (the River Wye) with a small number of potential migration obstructions in its upper reaches and one (the River Usk) with obstacles along its course. The geographical distributions, densities and age structures of the ammocoete populations were examined in relation to the locations of potential obstructions to the spawning migrations of anadromous adults. 2. A minimum of three age classes was recorded as far as 200 km upstream of the mouth of the River Wye (93% of the length of the mainstem), demonstrating that adults regularly migrate to the upper reaches of the catchment (downstream of a natural waterfall). By contrast, sea lamprey ammocoetes appeared to be absent (in suitable habitat) from 20 km (17%) of the River Usk, and there was a reduction in density, prevalence and the number of age classes upstream of two putative spawning-migration obstructions.3. This study highlights some of the potential impacts of habitat fragmentation by obstructions on the spawning migrations of anadromous species, as inferred from ammocoete demography.When used in combination to compare contiguous reaches, ammocoete densities, prevalence and age structure may be a useful indicator of which structures are likely to be important migration obstructions, and where further studies or mitigation efforts should be focused. It is likely that passage past some obstructions is enhanced if high river levels occur during the spawning migration, but there is a need to facilitate passage during all conditions, to improve access to under-exploited spawning and nursery areas.

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History of and Advances in Barriers as an Alternative Method to Suppress Sea Lampreys in the Great Lakes

Cited by 104 publications

References 16 publications

Enhancing ecosystem restoration efficiency through spatial and temporal coordination

Enhancing ecosystem restoration efficiency through spatial and temporal coordination

Sea LampreyPetromyzon marinusBiology and Management Across Their Native and Invasive Ranges: Promoting Conservation by Knowledge Transfer

Demography of sea lamprey (Petromyzon marinus) ammocoete populations in relation to potential spawning‐migration obstructions

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