scholarly journals The use of morphometric analysis to predict the swimming efficiency of two Neotropical long-distance migratory species in fish passage

2012 ◽  
Vol 10 (4) ◽  
pp. 797-804 ◽  
Author(s):  
Lucileine de Assumpção ◽  
Maristela Cavicchioli Makrakis ◽  
Sergio Makrakis ◽  
Ricardo Luiz Wagner ◽  
Patrícia Sarai da Silva ◽  
...  
Keyword(s):  
Swimming Performance ◽  
Hydroelectric Power Plant ◽  
Fish Passage ◽  
Hydroelectric Power ◽  
Migratory Species ◽  
Long Distance ◽  
Prochilodus Lineatus ◽  
Fish Ladder ◽  
Swimming Efficiency ◽  
Ascent Time

This study investigated the external body morphology (based on morphometric data) and the swimming efficiency in fish passages (based on the ascent time in a fish ladder) of two Neotropical long-distance migratory species. The fish were collected in the fish ladder of the Porto Primavera Hydroelectric Power Plant (known as Engenheiro Sergio Motta), upper Paraná River, Brazil. The species differ in several morphometric ratios related to swimming performance. Prochilodus lineatus exhibited a higher muscle ratio and caudal fin length ratio. However, Leporinus elongatus showed higher values for the fineness ratio, a higher length from snout to pectoral fin base ratio, and a higher caudal peduncle depth factor. Although both species show good swimming performance, the characteristics listed above may enable L. elongatus to apply greater power and propulsion, allowing it to reach a high swimming speed and to exhibit greater efficiency than P. lineatus. Leporinus elongatus moves faster than P. lineatus and has a lower mean ascent time (1.39 hours) than P. lineatus (3.76 hours). Prochilodus lineatus would require a somewhat longer time to pass through the fish ladder.

scholarly journals Analysis of fishing activity in the Itá reservoir, Upper Uruguay River, in the period 2004-2009

2013 ◽  
Vol 73 (3) ◽  
pp. 559-571 ◽  
Author(s):  
. Schork ◽  
Hermes-Silva. G. ◽  
. S ◽  
E. Zaniboni-Filho
Keyword(s):  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Catch Per Unit Effort ◽  
Migratory Species ◽  
Long Distance ◽  
Fishing Activity ◽  
Small Vessels ◽  
Annual Productivity ◽  
Socioeconomic Profile ◽  
Uruguay River

This study characterized fishing activity in the reservoir of the Hydroelectric Power Plant of Itá in Brazil. The reservoir is located in the Upper Uruguay River, which forms the border between the states of Santa Catarina and Rio Grande do Sul. To analyze fishing activity and the composition of ichthyofauna in the reservoir after damming, questionnaires were administered to fishermen in the region between 2004 and 2009. The results showed that fishing in the Itá reservoir can be classified as a subsistence activity performed on small vessels and usually involving the use of drift nets and handlines. Between 2004 and 2009, 292,780.10 kg worth of fish were captured, with an average annual productivity of 3.46 kg ha−1 yr−1. We recorded the highest values of catch per unit effort in 2006, with an annual average of 9.69 kg fisherman−1 day−1. A total of 27 morphospecies were captured during the sample period; carp, traíra, mandi and jundiá together accounted for almost 60% of the catch. This finding indicates that fishing is centered on the capture of sedentary and short-distance migratory species. Despite their lower abundance, long-distance migratory species continue to be captured. The case of the piracanjuba, a long-distance migratory species reintroduced to the region in 2004 and still present in the catches, is particularly noteworthy. Regarding the fishermen's socioeconomic profile, all were men, most of who have engaged in the activity for more than eleven years, have a low educational level, fish with the aid of family members and list agriculture as their main economic activity.

scholarly journals Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent

2012 ◽  
Vol 10 (4) ◽  
pp. 785-795 ◽  
Author(s):  
Ricardo Luiz Wagner ◽  
Sergio Makrakis ◽  
Theodore Castro-Santos ◽  
Maristela Cavicchioli Makrakis ◽  
João Henrique Pinheiro Dias ◽  
...  
Keyword(s):  
Hydroelectric Power Plant ◽  
Paraná River ◽  
Failure Rates ◽  
Migratory Fish ◽  
Hydroelectric Power ◽  
Long Distance ◽  
Prochilodus Lineatus ◽  
Piaractus Mesopotamicus ◽  
Parana River ◽  
Large Dam

This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil. The evaluation was designed to quantify entry and passage proportions of 4 long-distance migratory fish species: Brycon orbignyanus (piracanjuba), Piaractus mesopotamicus (pacu), Prochilodus lineatus (curimba), and Rhinelepis aspera (cascudo-preto). Proportions finding and entering the fishway differed between species, ranged from 7.4 % (Prochilodus lineatus) to 55.4% (Piaractus mesopotamicus). Also, proportion passing was different between species, ranged from 31% (R. aspera) to 100% (Prochilodus lineatus). Fish that were marked and released within the fishway had greater failure rates than those that entered volitionally. Total time to pass ranged from 1.48 hours (Prochilodus lineatus) to 178.9 hours (R. aspera). Failure rates were greatest in the lower end of the fishway. Although some individuals of all species passed successfully, significant challenges remain to restoring connectivity of the upper Paraná River.

scholarly journals Comparing on site human and video counts at Igarapava fish ladder, south eastern Brazil

2006 ◽  
Vol 4 (2) ◽  
pp. 291-294 ◽  
Author(s):  
Mark D. Bowen ◽  
Simone Marques ◽  
Luiz G. M. Silva ◽  
Volney Vono ◽  
Hugo P. Godinho
Keyword(s):  
Fish Species ◽  
Accurate Method ◽  
Fish Passage ◽  
Southeastern Brazil ◽  
Human Observer ◽  
Full Spectrum ◽  
Prochilodus Lineatus ◽  
Number Of Species ◽  
Fish Ladder ◽  
Number Of Individuals

On site human observations and video images were collected and compared at the window of the Igarapava Dam fish ladder (IDFL), rio Grande , Southeastern Brazil, between March 1st and June 30th, 2004. We conducted four experiments with two humans (Observer 1 and Observer 2) observing fish passage in the IDFL window while a Sony 3CCD video camera (Observer 3) recorded fish passage at the same time. Experiments, each one hour in length, were distributed throughout the diel cycle using full spectrum lights. We identified fish species, the number of individuals for each species, and the real time that they passed. Counts from each human observer were compared to the video counts. The fish species most commonly observed in the window were - curimba (Prochilodus lineatus), mandi-amarelo (Pimelodus maculatus), piau-três-pintas (Leporinus friderici) and ferreirinha (Leporinus octofasciatus). The number of species and individuals were indistinguishable for the three observers. But, the number of species and individuals were significantly different among experiments. Thus, the three observers register the same number of species and count the same number of individuals even when these two response variables differ significantly among experiments. Based on these results, we concluded that the video count was an accurate method to assess fish passage at the IDFL.

THE ENERGY OF SEA TIDES IN THE CONTEXT OF SOLVING CLIMATE PROBLEMS

2021 ◽  
Author(s):  
Elena Shirkova ◽  
Eduard Shirkov
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Main Idea ◽  
Hydroelectric Power Plant ◽  
Capital Intensity ◽  
Tidal Energy ◽  
Hydroelectric Power ◽  
Energy Potential ◽  
Long Distance ◽  
North East

"The article presents an overview of the technical, economic, and environmental arguments in favour of wider use of the gigantic energy potential of sea tides to solve the most important climate problem today – the reduction of anthropogenic pollution of the Earth's atmosphere with carbon dioxide. The main idea of the considered solution is the replacement of carbon fuels for thermal power plants and transport with ""green"" hydrogen. The production of such hydrogen is carried out by electrolysis using the energy of carbon–free renewable sources. Tidal hydroelectric power plants are the cheapest, largest and most economically safe electricity supplier for the production of green hydrogen today. Until now, this direction of the energy sector has not become widespread due to the high capital intensity, as well as due to the geographic remoteness of the places where tidal energy is concentrated from large centres of electricity consumption. The explosive growth in global hydrogen demand in recent years alleviates the problem of very expensive transport and large losses in long distance transmission of electricity. Hydrogen can be transported without loss and relatively cheaply by pipelines and sea tankers over unlimited distances. The use of the energy of the highest tides and flow in the Pacific Ocean for the production of ""green"" hydrogen is proposed in the revived project of construction of the world's largest Penzhinsk Tidal Hydroelectric Power Plant (the Sea of Okhotsk’ north–east, Russia)."

scholarly journals Assessing fish assemblages similarity above and below a dam in a Neotropical reservoir with partial blockage

2013 ◽  
Vol 73 (4) ◽  
pp. 727-736 ◽  
Author(s):  
FG. Araújo ◽  
ABI. Santos ◽  
RJ. Albieri
Keyword(s):  
Fish Assemblage ◽  
Fish Assemblages ◽  
Fish Passage ◽  
Migratory Species ◽  
Wet Season ◽  
Prochilodus Lineatus ◽  
Oxygen Conductivity ◽  
Composition And Structure ◽  
Pimelodus Maculatus ◽  
Hoplosternum Littorale

Damming rivers disrupts the water flow and changes the ichthyofauna organisation. We investigated an impoundment with permanent connection and homogeneous environmental conditions between the zones above and below the dam. Temperature was comparatively higher during wet season irrespective of zone, and both zones had higher dissolved oxygen, conductivity and transparency in the dry season. A total of 1687 individuals comprising 27 species were collected in the downriver zone, while the reservoir had 879 individuals and 23 species. Each zone had different fish assemblage composition and structure, but assemblages were not explained by the examined environmental variables (r2 = 0.08; p = 0.307). Migratory species such as Pimelodus maculatus, Pimelodus fur, Leporinus copelandii and Prochilodus lineatus were the most affected, and probably are prevented to perform upriver migrations. On the other hand, lentic adapted species such as G. brasiliensis, Hoplias malabaricus and Hoplosternum littorale successfully colonised the reservoir. Therefore we conclude that the presence of the lateral hydrological connectivity alone does not guarantee the ecological connectivity since fish assemblage similarity differed between the two zones. Fish passage facilities should be monitored and managed to evaluate and improve their functionality.

Diel vertical migration of fish in a Neotropical reservoir

2017 ◽  
Vol 68 (6) ◽  
pp. 1070 ◽  
Author(s):  
I. G. Prado ◽  
P. S. Pompeu
Keyword(s):  
Power Plant ◽  
Vertical Migration ◽  
Diel Vertical Migration ◽  
Power Plants ◽  
Hydroelectric Power Plant ◽  
Distribution Patterns ◽  
Fish Passage ◽  
Fish Distribution ◽  
Hydroelectric Power ◽  
Operational Variables

Vertical distribution of fish was studied immediately upstream of the Três Marias hydroelectric power plant dam from December 2010 to December 2011. Eighteen field trips were conducted for hydroacoustic sampling over a period of 24h each time, with 6-h diel sampling intervals within each of the 18 sample dates. Gill nets were used to collect information on fish species composition and length. The greater fish abundance near the surface during the night and at higher depths during the daytime over a 1-day period suggests that the behavioural phenomenon known as diel vertical migration occurs at Três Marias reservoir. Therefore, the aim of the present study was to evaluate the occurrence of diel vertical migration of fish in a Neotropical reservoir, the possible relationship with the operation of the hydroelectric power plant and the variables that may affect fish distribution in water column. Analysis of some limnological and operational variables showed that water transparency, temperature and dissolved oxygen were correlated with vertical fish distribution patterns. These results are important for proposing management measures to mitigate the effects of hydroelectric power plants on fish, such as fish passage through turbines.

scholarly journals The Canal da Piracema at Itaipu Dam as a fish pass system

2007 ◽  
Vol 5 (2) ◽  
pp. 185-195 ◽  
Author(s):  
Sérgio Makrakis ◽  
Luiz Carlos Gomes ◽  
Maristela Cavicchioli Makrakis ◽  
Domingo Rodriguez Fernandez ◽  
Carla Simone Pavanelli
Keyword(s):  
Abundant Species ◽  
Migratory Species ◽  
Long Distance ◽  
Pass System ◽  
Prochilodus Lineatus ◽  
Fish Stocks ◽  
Fish Pass ◽  
Iheringichthys Labrosus ◽  
Search For Information ◽  
Abundance And Distribution

The Canal da Piracema is the longest (nearly 10 km) fish pass system in the world. The construction of this fish pass was somehow controversial, because it connected two distinct ichthyofaunistic provinces. This study evaluated the ichthyofauna present in the Canal da Piracema and the abundance and distribution of long-distance migratory fish species along this fish pass system (evaluated possible selectivity). The Canal da Piracema was shown to be difficult to sample because of its environmental heterogeneity: artificial ponds, ladders and nature-like fish pass. To solve this problem, we used several fishing gears, adequate for the several biotopes present (unstructured and structured littoral were sampled with seining nets and electrofishing; lentic were sampled with gillnets and longlines (deeper areas); and rapid water areas were sampled with cast nets). The ichthyofauna of the Canal da Piracema followed the pattern for South America and the Paraná River, with a predominance of Characiformes and Siluriformes. The most representative families were Characidae, Anostomidae, Pimelodidae and Loricariidae. We captured 116 species (17 were long-distance migratory) during the period studied. Small-sized species were predominant in unstructured and structured littoral areas, especially Bryconamericus exodon and Apareiodon affinis.The most abundant species was Hypostomus spp. in lentic areas, followed by Iheringichthys labrosus. Hoplias aff. malabaricus predominated in deeper lentic areas. Long-distance migratory species were abundant in rapid waters; they were Prochilodus lineatus and Leporinus elongatus. The sharp reduction in the number of species, including migratory ones, is an indication that the Canal da Piracema is selecting the species that ascend it. Therefore, the search for information on the efficiency of the various fish passes present in the Canal da Piracema is fundamental, to facilitate upward movements of fish. If this is reached, this polemic fish pass has the potential to contribute to the conservation of fish stocks in Itaipu Reservoir and upstream stretches, because of the presence of spawning and development (nurseries) areas for migratory species.

scholarly journals Structure dynamics of a fish community over ten years of formation in the reservoir of the hydroelectric power plant in upper Uruguay River

2017 ◽  
Vol 77 (4) ◽  
pp. 710-723 ◽  
Author(s):  
G. Schork ◽  
E. Zaniboni-Filho
Keyword(s):  
Power Plant ◽  
Fish Assemblage ◽  
Hydroelectric Power Plant ◽  
Medium Size ◽  
Hydroelectric Power ◽  
Prochilodus Lineatus ◽  
Astyanax Fasciatus ◽  
Iheringichthys Labrosus ◽  
Numeric Representation ◽  
Migratory Movements

Abstract The objective of this study was to evaluate the structure of the fish assemblage in the ten years following the closing of the lake of the Itá Hydroelectric Power Plant. Seasonal collections were conducted from 2001 to 2010. During this period, 44,834 fish were captured, totaling 3,818.01 kg, among 8 orders, 24 families and 84 species. In general, profound changes were not observed in the fish assemblage in the ten years after the formation of the Itá lake. Few species changed in dominance over time, while many were rare in the environment. The ichthyofauna in the reservoir was dominated by small and medium size opportunist species that conduct short or no migratory movements. Among the most abundant, six species were responsible for more than 50% of the numeric representation: Steindachnerina brevipinna, Astyanax fasciatus, Apareiodon affinis, Hypostomus isbrueckeri, Iheringichthys labrosus and Loricariichthys anus. The increase in the representation of the later species stood out. The biomass was dominated by Steindachneridion scriptum, Prochilodus lineatus, I. laborsus, Schizodon nasutus, Hoplias malabaricus, Acestrorhynchus pantaneiro, Hoplias lacerdae, H. isbrueckeri and L. anus. Despite the presence of large migrators in the region of the reservoir, their vulnerability was revealed by the low numeric abundance and accidental capture. The k-dominance curve of numerical abundance and biomass indicates a moderately disturbed community, in which the representation of small species was also important to the amounts of biomass.

scholarly journals Fish ladder of Lajeado Dam: migrations on one-way routes?

2007 ◽  
Vol 5 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Angelo Antônio Agostinho ◽  
Elineide Eugênio Marques ◽  
Carlos Sérgio Agostinho ◽  
Deusimar Augusto de Almeida ◽  
Rafael José de Oliveira ◽  
...  
Keyword(s):  
Hydroelectric Plant ◽  
Fish Passage ◽  
Management Tool ◽  
Migratory Fish ◽  
Migratory Species ◽  
Migration Routes ◽  
Management Tools ◽  
Fish Ladder ◽  
Fish Samples ◽  
Tocantins River

Fish ladders are generally conceived to reestablish connectivity among critical habitats for migratory species, thus mitigating the impacts of the blockage of migration routes by dams. If this management tool is to be meaningful for conserving fish species, it must provide a fully permeable connection and assure both upward and downward movements. However, because reservoirs have very different hydrodynamics than the original river, it is expected that, at least in the inner area, they may constitute an additional barrier to this movement, especially for descending fish. Thus, the present study sought to determine if migratory fish and their offspring disperse downstream from the dam after ascending a ladder and spawning in the upper reaches of a basin. To achieve this purpose, we evaluated the limitation imposed by lentic areas to the descent of eggs, larvae and adults of migratory species; we also determined the abundance and composition of larvae present in the plankton near the dam, and compared the intensity of the upward and downward movements of adult fish. Samples of ichthyoplankton were taken upriver, inside the reservoir, in the river downstream from the dam, and in the forebay of the Lajeado Dam on the Tocantins River (Luis Eduardo Magalhães Hydroelectric Plant), from October, 1999 through September, 2004. The densities of fish ascending and descending the ladder were determined experimentally on eight occasions, from June, 2004 to March, 2005. Due to difficulties in identifying the true fish origin (up or down) in the environments connected by the fish passage system, the evaluation of the distribution of migratory fish in reservoirs was based on the landings of the commercial fishery conducted along the Itaipu Reservoir during the four years preceding (2001 through 2003) the construction of the lateral channel (fish-passage mechanism). Fish eggs and larvae drifting down the Tocantins River did not appear in samples taken in the lower half of the reservoir; those found in water flowing through the spillways, turbines or fish ladder of Lajeado Dam belonged essentially to non-migratory clupeids that spawn in the inner part of the reservoir. In addition, results showed that in a reservoir with no fish-passage mechanism, migrants select habitats that still maintain riverine characteristics, in the upper parts of the impounded area. The downward movements are negligible compared to those upward, in the experiments conducted in the fish ladder. It is concluded, therefore, that the Lajeado fish ladder, and possibly those at other dams, is essentially a one-way route that promotes upstream movements of migrants, without the necessary return of adults or their offspring. Thus, the low permeability of the connections provided by these management tools can drastically increase the level of environmental impact that they were actually intended to reduce.

scholarly journals Utilization of the fish ladder at the Engenheiro Sergio Motta Dam, Brazil, by long distance migrating potamodromous species

2007 ◽  
Vol 5 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Sérgio Makrakis ◽  
Maristela Cavicchioli Makrakis ◽  
Ricardo Luiz Wagner ◽  
João Henrique Pinheiro Dias ◽  
Luiz Carlos Gomes
Keyword(s):  
Lower Pool ◽  
Abundant Species ◽  
Future Research ◽  
Southern Brazil ◽  
Migratory Species ◽  
Long Distance ◽  
Sampling Protocol ◽  
Fish Ladder ◽  
Upper Pool ◽  
Number Of Individuals

Utilization of the fish ladder installed at the Engenheiro Sergio Motta Dam (also known as Porto Primavera) on the Paraná River, Southern Brazil, by long-distance migrating potamodromous species (sampling Protocol I), and ascending and descending movements (Protocol II) were evaluated. Three pools along the fish ladder (designated as lower, middle, and upper) were sampled monthly between December, 2004 and March, 2005 to determine the abundance of species in the ladder. The ascending and descending movements of the species in the ladder were also analyzed in the same period. In the samples for both protocols, 37 species representing 17 families and 5 orders (Characiformes, Siluriformes, Perciformes, Gymnotiformes, and Myliobatiformes) were recorded. Characiformes were represented by 21 species. Long- distance migratory species (11 species) predominated in the ladder (60% of the total number of individuals), with high abundance of Rhinelepis aspera (5645 individuals). For protocol I, mean abundance varied greatly among the months and pools, with lowest values in December and March for all pools, and highest in January for the lower pool due to high capture of R. aspera. Fish abundance declined from the lower to the upper pool, especially for R. aspera and Rhaphiodon vulpinus. For Protocol II, 17 species were recorded ascending the ladder, where Astyanax altiparanae and Leporinus friderici were the most abundant species (684 and 111 individuals, respectively). However, 18 species showed descending movements, with high captures of Metynnis maculatus and A. altiparanae (339 and 319 individuals, respectively). Twelve species (52%) moved in both directions, and among the seven migratory species sampled, four were recorded ascending and descending, and three species only ascending the ladder. The fish ladder appears to selectively favor species with high swimming capabilities. A discussion is presented on the requirements for future research on attraction to the fish ladder entrance, downstream movements, fish utilization of the ladder, and impacts on spawning and rearing habitat both upstream and downstream of the dam.

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