Contrasting effects of dams with and without reservoirs on the population density of an amphidromous goby in southwestern Japan

SUMIZAKI, Yoshifumi; Kawanishi, Ryota; Inoue, Mikio; Takagi, Motohiro; Omori, Koji

doi:10.1007/s10228-018-00678-2

Cited by 4 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dams and other barriers, such as perched culverts, evidently alter the fish communities upstream in areas where amphidromous species are prevalent. Case studies from New Zealand (Joy and Death 2001; Jellyman and Harding 2012), Japan (Fukushima et al 2007;Sumizaki et al 2019), and Puerto Rico (Coomey and Kwak 2013) indicate that dams result in decreased abundance and species richness upstream, driven by a loss of diadromous species. Barriers need not be large dams for this pattern to emerge; indeed, island-wide surveys of Puerto Rico have demonstrated that amphidromous (and other diadromous) species are typically restricted (though not completely blocked) by 2 m high structures, and extirpated above 4 m high barriers (Coomey and Kwak 2013).…”

Section: Physical Barriers To Migrationmentioning

confidence: 99%

Water infrastructure and the migrations of amphidromous species: impacts and research requirements

Jarvis

Closs

2019

Journal of Ecohydraulics

View full text Add to dashboard Cite

Amphidromous species undertake a number of migrations throughout their life-history, migrating to sea immediately after hatching in freshwater, migrating back to freshwater after a pelagic larval period, and potentially undertaking adult spawning migrations. Amphidromous species are therefore likely to be highly susceptible to water infrastructure, having different migratory directions, objectives, and requirements at different life stages. We review the current state of knowledge on the migrations of amphidromous species, identifying the requirements for successful migrations, and potential threats from water infrastructure associated with anthropogenic activities. Newly hatched larvae migrating downstream are susceptible to numerous hazards associated with water infrastructure, including larval retention and starvation in freshwater, entrainment and impingement at water intakes, and barotrauma and physical damage associated with weirs and turbines. Distinct patterns of larval drift (spatial and temporal) may provide opportunities to alleviate mortality during larval emigration. While instream barriers inhibit the upstream migrations of amphidromous post-larvae and juveniles, climbing abilities are common, allowing for creative solutions facilitating upstream migration. Downstream spawning migrations are common in numerous amphidromous taxa, and are often associated with natural changes in flow regime, highlighting the need for bidirectional passage, and the potential for artificial flow alteration to negatively affect reproduction. Much research on the passage of amphidromous taxa has focussed on upstream migrating juveniles, while downstream migrating adults and larvae, which may be far more susceptible to water infrastructure, have largely been ignored. This life-stage bias represents a key research gap that must be addressed to safeguard amphidromous species in future.

show abstract

Section: Physical Barriers To Migrationmentioning

confidence: 99%

Water infrastructure and the migrations of amphidromous species: impacts and research requirements

Jarvis

Closs

2019

Journal of Ecohydraulics

View full text Add to dashboard Cite

show abstract

Seasonal habitat use by warmwater fishes in a braided river, southwestern Japan: effects of spatiotemporal thermal heterogeneity

2022

View full text Add to dashboard Cite

Reservoirs facilitate colonization of river catchments by a native invasive fish through provision of pelagic larval rearing habitat

et al. 2023

View full text Add to dashboard Cite

Dams on rivers are known to facilitate the colonisation and spread of aquatic alien and native invasive species, but the actual mechanisms involved are poorly understood. Since the construction of the Solina Dam on the upper San River system in Poland, European perch (Perca fluviatilis) have expanded their distribution into the headwaters of this river system, becoming a native invader. In this study, we assessed the spread of perch in detail over time upstream of the Solina Reservoir, and used otolith trace element microchemistry to determine the spawning and larval rearing locations of perch in the catchment upstream of the dam. Extensive sampling over several years across the catchment upstream of the Solina Reservoir confirmed the widespread occurrence of perch into the headwaters of the tributary river systems, with smaller size classes dominating locations closer to the Solina Reservoir. Despite perch being widely distributed upstream of the Solina Reservoir, otolith microchemical analysis indicated the populations from various reservoir tributaries mostly shared the same spawning and larval rearing habitat, most likely the Solina Reservoir. Our results suggest that reservoirs can facilitate the colonisation of river systems by providing a critical habitat element that would be otherwise missing from riverine landscapes, i.e., an extensive and productive pelagic larval rearing environment. This research shows that the impacts of large dams can extend many kilometers upstream from the river reaches directly affected by the resulting impoundment.

show abstract

Contrasting effects of dams with and without reservoirs on the population density of an amphidromous goby in southwestern Japan

Cited by 4 publications

References 28 publications

Water infrastructure and the migrations of amphidromous species: impacts and research requirements

Water infrastructure and the migrations of amphidromous species: impacts and research requirements

Seasonal habitat use by warmwater fishes in a braided river, southwestern Japan: effects of spatiotemporal thermal heterogeneity

Reservoirs facilitate colonization of river catchments by a native invasive fish through provision of pelagic larval rearing habitat

Contact Info

Product

Resources

About