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Journal articles on the topic 'Fish communities'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2024

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1

Deudero, S., P. Merella, B. Morales-Nin, E. Massutí, and F. Alemany. "Fish communities associated with FADs." Scientia Marina 63, no. 3-4 (December 30, 1999): 199–207. http://dx.doi.org/10.3989/scimar.1999.63n3-4199.

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2

Bell, RJ, MJ Fogarty, and JS Collie. "Stability in marine fish communities." Marine Ecology Progress Series 504 (May 14, 2014): 221–39. http://dx.doi.org/10.3354/meps10730.

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3

Wong, Allan H. K., D. Dudley Williams, Donald J. McQueen, Eric Demers, and Charles W. Ramcharan. "Macroinvertebrate abundance in two lakes with contrasting fish communities." Fundamental and Applied Limnology 141, no. 3 (March 9, 1998): 283–302. http://dx.doi.org/10.1127/archiv-hydrobiol/141/1998/283.

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4

Siagian, Mindo Tua, B. Sengli J. Damanik, and Retno Widhiastuti. "Public Perception to Communities Floating Fish Cage At Lake Toba." Indian Journal of Applied Research 3, no. 7 (October 1, 2011): 329–35. http://dx.doi.org/10.15373/2249555x/july2013/101.

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5

Crampton, W. G. R. "Gymnotiform fish: an important component of Amazonian fioodplain fish communities." Journal of Fish Biology 48, no. 2 (February 1996): 298–301. http://dx.doi.org/10.1111/j.1095-8649.1996.tb01122.x.

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6

Crampton, W. "Gymnotiform fish: an important component of Amazonian floodplain fish communities." Journal of Fish Biology 48, no. 2 (February 1996): 298–301. http://dx.doi.org/10.1006/jfbi.1996.0029.

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7

McCann, Kevin. "DENSITY-DEPENDENT COEXISTENCE IN FISH COMMUNITIES." Ecology 79, no. 8 (December 1998): 2957–67. http://dx.doi.org/10.1890/0012-9658(1998)079[2957:ddcifc]2.0.co;2.

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8

Lopez-Rojas, Hector, Antonio Machado-Allison, Francisco Mago-Leccia, and R. H. Lowe-McConnell. "Ecological Studies in Tropical Fish Communities." Copeia 1988, no. 2 (May 18, 1988): 503. http://dx.doi.org/10.2307/1445899.

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9

Chao, Ning Labbish, and R. H. Lowe McConnell. "Ecological Studies in Tropical Fish Communities." Estuaries 11, no. 1 (March 1988): 76. http://dx.doi.org/10.2307/1351725.

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10

Henderson, P. A. "The structure of estuarine fish communities." Journal of Fish Biology 33, sa (December 1988): 223–25. http://dx.doi.org/10.1111/j.1095-8649.1988.tb05577.x.

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11

Hugueny, Bernard, and Didier Paugy. "Unsaturated Fish Communities in African Rivers." American Naturalist 146, no. 1 (July 1995): 162–69. http://dx.doi.org/10.1086/285792.

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12

Morgan, N. C. "Ecological studies in tropical fish communities." Biological Conservation 44, no. 4 (1988): 317. http://dx.doi.org/10.1016/0006-3207(88)90023-7.

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13

Iacarella, Josephine C., Emily Adamczyk, Dan Bowen, Lia Chalifour, Aaron Eger, William Heath, Sibylla Helms, et al. "Anthropogenic disturbance homogenizes seagrass fish communities." Global Change Biology 24, no. 5 (March 2, 2018): 1904–18. http://dx.doi.org/10.1111/gcb.14090.

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14

Rice, Jake, Niels Daan, Henrik Gislason, and John Pope. "Does functional redundancy stabilize fish communities?" ICES Journal of Marine Science 70, no. 4 (July 1, 2013): 734–42. http://dx.doi.org/10.1093/icesjms/fst071.

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AbstractRice, J., Daan, N., Gislason, H., and Pope, J. Does functional redundancy stabilize fish communities? – ICES Journal of Marine Science, 70: 734–742. Functional redundancy of species sharing a feeding strategy and/or maximum size has been hypothesized to contribute to increased resilience of marine fish communities (the “portfolio effect”). A consistent time-series of survey data of fish in the North Sea was used to examine if trophic functional groups or maximum length of species (Lmax) groups with larger numbers of species had lower coefficients of variation in abundance and biomass over time than did groupings with fewer species. Results supported this hypothesis. However, the stabilizing effect of numbers of species in a group on variation in abundance or biomass could be accounted for by the Law of Large Numbers, providing no evidence that specific ecological processes or co-adaptations are necessary to produce this effect. This implies that successful conservation policies to maintain the resilience of a marine fish community could be based on strategies to maintain the number of species in functional groups, without having to know the detailed ecological interactions between the species.

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15

Sale, Peter F. "Ecological studies in tropical fish communities." Trends in Ecology & Evolution 3, no. 1 (January 1988): 27–28. http://dx.doi.org/10.1016/0169-5347(88)90082-1.

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16

Mihalitsis, Michalis, Renato A. Morais, and David R. Bellwood. "Small predators dominate fish predation in coral reef communities." PLOS Biology 20, no. 11 (November 29, 2022): e3001898. http://dx.doi.org/10.1371/journal.pbio.3001898.

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Ecosystem processes are challenging to quantify at a community level, particularly within complex ecosystems (e.g., rainforests, coral reefs). Predation is one of the most important types of species interactions, determining several ecosystem processes. However, while it is widely recognised, it is rarely quantified, especially in aquatic systems. To address these issues, we model predation on fish by fish, in a hyperdiverse coral reef community. We show that body sizes previously examined in fish–fish predation studies (based on a metanalysis), only represent about 5% of likely predation events. The average fish predator on coral reefs is just 3.65 cm; the average fish prey just 1.5 cm. These results call for a shift in the way we view fish predation and its ability to shape the species or functional composition of coral reef fish communities. Considered from a functional group approach, we found general agreement in the distribution of simulated and observed predation events, among both predator and prey functional groups. Predation on coral reefs is a process driven by small fish, most of which are neither seen nor quantified.

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17

Bai, Shijie, and Gang Hou. "Microbial communities on fish eggs from Acanthopagrus schlegelii and Halichoeres nigrescens at the XuWen coral reef in the Gulf of Tonkin." PeerJ 8 (February 7, 2020): e8517. http://dx.doi.org/10.7717/peerj.8517.

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Coral reefs are an important part of the ocean ecosystem and are a vital spawning ground for marine fish. Microorganisms are abundant in this environment and play a key role in the growth and development of host species. Many studies have investigated the microbial communities of fish with a focus on the intestinal microbiome of laboratory-reared adult fish. Little is known about the relationship between fish eggs and their microorganisms, especially as microbial communities relate to wild fish eggs in coral reefs. In this study, we analyzed the microbial communities of two species of coral fish eggs, Acanthopagrus schlegelii and Halichoeres nigrescens, using 16S rRNA gene amplicon sequencing technology. Pseudomonas, Archromobacter, and Serratia were the main bacterial genera associated with these fish eggs and are known to be bacteria with potentially pathogenic and spoilage effects. The microbial community structures of Acanthopagrus schlegelii and Halichoeres nigrescens eggs were separated based on the 30 most abundant operational taxonomic units (OTUs). Principal coordinate analysis (PCoA) and non-metric multidimensional scaling analysis (NMDS) further confirmed that the microbial communities of coral fish eggs differ by species, which may be due to host selection. A functional prediction of the microbial communities indicated that most of the microbial communities were chemoheterotrophic and involved in nitrogen cycling. Our results showed that the microbial communities of coral fish eggs were distinct by species and that key microorganisms were potentially pathogenic, leading to the spoilage of fish eggs, high mortality, and low incubation rates. This study provided new insights for understanding the relationship between microorganisms and wild fish eggs.

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18

Machias, A., I. Karakassis, M. Giannoulaki, KN Papadopoulou, CJ Smith, and S. Somarakis. "Response of demersal fish communities to the presence of fish farms." Marine Ecology Progress Series 288 (2005): 241–50. http://dx.doi.org/10.3354/meps288241.

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19

Lin, Chien-Hsiang, Brigida De Gracia, Michele E. R. Pierotti, Allen H. Andrews, Katie Griswold, and Aaron O’Dea. "Reconstructing reef fish communities using fish otoliths in coral reef sediments." PLOS ONE 14, no. 6 (June 14, 2019): e0218413. http://dx.doi.org/10.1371/journal.pone.0218413.

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20

Zhao, Jing, Jie Cao, Siquan Tian, Yong Chen, and Shouyu Zhang. "Evaluating Sampling Designs for Demersal Fish Communities." Sustainability 10, no. 8 (July 24, 2018): 2585. http://dx.doi.org/10.3390/su10082585.

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Fish communities play an important role in determining the dynamics of marine ecosystems, while the evaluation and formulation of protective measures for these fish communities depends on the quality and quantity of data collected from well-designed sampling programs. The ecological model was used first to predict the distribution of the demersal fish community as the “true” population for the sampling design. Four sampling designs, including simple random sampling, systematic sampling, and stratified sampling with two sampling effort allocations (proportional allocation and Neyman allocation), were compared to evaluate their performance in estimating the richness and biodiversity indices of the demersal fish community. The impacts of two different temperature change scenarios, uniform temperature and non-uniform temperature increase on the performance of the sampling designs, were also evaluated. The proportional allocation yielded the best estimates of fish community richness and biodiversity relative to a synthetic baseline. However, its performance was not always robust relative to the simulated temperature change. When the water temperature changed unevenly, systematic sampling tended to perform the best. Thus, it is important to adjust the strata for a stratified sampling when the habitat experiences large changes. This suggests that we need to carefully evaluate the appropriateness of stratification when temperature change-induced habitat changes are large enough to result in substantial changes in the fish community.

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21

Jamilah, Jamilah, Nurmala Nurmala, Sullaida Sullaida, Siti Nadhiratun Nisa, and Divia Novita. "PROCESSED PRODUCT DIVERSIVATION BASED COTTLE FISH FOR COASTAL FISHING COMMUNITIES." IRPITAGE JOURNAL 2, no. 1 (November 26, 2021): 1–6. http://dx.doi.org/10.54443/irpitage.v2i1.59.

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The highest production (catching) of tuna reached 32.22% per year but the selling price of fish was very low, while the fish processing business was only in the form of wooden fish (keumamah) and smoking due to low mastery of technology and absorption of innovation. The business of processing tuna into shredded fish and fish crackers has never been carried out by the coastal fishing communities of Aceh, even though this business has the potential to be developed on a household scale. The service activity aims to provide training on processing tuna into shredded fish and fish crackers for fishing communities in coastal areas in the category of poor families. The method used is the survey method and Focus Group Discussion (FGD). Demonstrations of processing tuna into shredded fish and fish crackers can open up insights and business opportunities for housewives and young fishermen in creating added value and profit for traditional fishing households as well as improving production management and marketing of competitively processed fish. This activity can foster an entrepreneurial spirit among coastal fishing communities to increase fishermen's household income.

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22

Zhao, Jinfa, Chunhou Li, Teng Wang, Chunran Li, Jianzhong Shen, Yong Liu, and Peng Wu. "Distribution Pattern of Mangrove Fish Communities in China." Biology 11, no. 12 (November 24, 2022): 1696. http://dx.doi.org/10.3390/biology11121696.

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Mangroves are among the most productive marine and coastal ecosystems and play an important role in maintaining the stability and diversity of fish communities. To explore the structure of mangrove fish communities in China, we compiled previous studies, monographs, and two databases on 54 mangrove areas published in the past 30 years. Mangrove fish communities in China comprised Osteichthys (597 species) and Chondrichthyes (14 species), representing 611 species in 344 genera, 117 families, and 28 orders. Perciformes were the predominant taxon, with 350 species in 52 families, accounting for 57% of the total species richness. Reef fish accounted for 29.62%. With regard to feeding groups, there were 328 carnivorous species (53.68%), 214 omnivorous species (35.02%), 41 herbivorous species (6.71%), and 28 detritivores species (4.58%). Classified by body size, 57.61% were small-sized, 24.22% medium-sized, and 18.17% were large-sized fishes. A total of 5.23% (32 species) of these mangrove fish are currently on IUCN red lists, i.e., 2 species are critically endangered, 4 are endangered, 12 are vulnerable, and 14 are near threatened. Cluster analyses shows that Chinese mangroves fish were divided into two categories, i.e., coastal mangrove and island mangrove type. This is closely related to the distribution of reef fish. Moreover, the number of fish species showed a strong positive correlation with mangrove area, but not with latitude. The main reasons may be the subtropical and tropical geographic locations, as well as the characteristics of the South China Sea and the Taiwan Warm Current. The size and integrity of mangrove area are crucial to the local ecosystems; thus, protecting and restoring mangroves is of great significance to large-scale ecosystem-stability and local biodiversity.

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23

Almany, Glenn R. "PRIORITY EFFECTS IN CORAL REEF FISH COMMUNITIES." Ecology 84, no. 7 (July 2003): 1920–35. http://dx.doi.org/10.1890/0012-9658(2003)084[1920:peicrf]2.0.co;2.

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24

Myers, Ransom A., and Boris Worm. "Rapid worldwide depletion of predatory fish communities." Nature 423, no. 6937 (May 2003): 280–83. http://dx.doi.org/10.1038/nature01610.

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25

Pinault, M., N. Loiseau, P. Chabanet, P. Durville, H. Magalon, J. P. Quod, and R. Galzin. "Marine fish communities in shallow volcanic habitats." Journal of Fish Biology 82, no. 6 (April 30, 2013): 1821–47. http://dx.doi.org/10.1111/jfb.12110.

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26

Knierim, Bernhard, Paul Wilmes, Rick I. Webb, Kent McDonald, Luis Comolli, Birgit Luef, Kenneth H. Downing, et al. "Correlative TEM/FISH Imaging of Microbial Communities." Biophysical Journal 98, no. 3 (January 2010): 581a. http://dx.doi.org/10.1016/j.bpj.2009.12.3157.

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27

Mladineo, I. "Parasite communities of Adriatic cage-reared fish." Diseases of Aquatic Organisms 64 (2005): 77–83. http://dx.doi.org/10.3354/dao064077.

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28

Colby, Peter J., Philip A. Ryan, Dennis H. Schupp, and Steven L. Serns. "Interactions in North-Temperate Lake Fish Communities." Canadian Journal of Fisheries and Aquatic Sciences 44, S2 (December 19, 1987): s104—s128. http://dx.doi.org/10.1139/f87-314.

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Several species interrelationships influenced by actural or preceived disturbances were described which managers should consider when manipulating fish populations and communities. For example, factors controlling homeostasis of adult northern pike (Esox lucius) and white suckers (Catostomus commersoni) in northern lakes may still operate despite walleye reductions, suggesting less niche overlap than we previously expected. In more northern centrarchid type communities, percid abundance and condition depend on how well northern pike and other predators control both white sucker and bluegill (Lepomis macrochirus) abundance. Evidence from walleye (Stizostedion vitreum vitreum) fry and fingerling plantings suggest that when intense interactions between species determine their abundance, these interactions occur during the very early life stages. Climatic changes may also be influential in determining abundance of several fish species common in north-temperate lakes. Rehabilitation of preferred species by removal of less desirable fishes can be successful in some ecosystems, but we warn that an undesirable compensatory response may also occur.

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29

Chang, Fi-John, Wen-Ping Tsai, Tzu-Ching Wu, Hung-kwai Chen, and Edwin E. Herricks. "Identifying natural flow regimes using fish communities." Journal of Hydrology 409, no. 1-2 (October 2011): 328–36. http://dx.doi.org/10.1016/j.jhydrol.2011.08.029.

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30

Lowe-McConnell, Rosemary. "Fish communities in the African Great Lakes." Environmental Biology of Fishes 45, no. 3 (March 1996): 219–35. http://dx.doi.org/10.1007/bf00003090.

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31

Berkman, Hilary E., and Charles F. Rabeni. "Effect of siltation on stream fish communities." Environmental Biology of Fishes 18, no. 4 (December 1987): 285–94. http://dx.doi.org/10.1007/bf00004881.

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32

BYEON, Hwa Keun. "Changes in Fish Communities of Mt. Cheonggye." Korean Journal of Nature Conservation 21, no. 1 (December 2022): 90–100. http://dx.doi.org/10.30960/kjnc.2022.21.1.90.

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33

Yule, Daniel L., Jean V. Adams, David M. Warner, Thomas R. Hrabik, Patrick M. Kocovsky, Brian C. Weidel, Lars G. Rudstam, and Patrick J. Sullivan. "Evaluating analytical approaches for estimating pelagic fish biomass using simulated fish communities." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 12 (December 2013): 1845–57. http://dx.doi.org/10.1139/cjfas-2013-0072.

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Pelagic fish assessments often combine large amounts of acoustic-based fish density data and limited midwater trawl information to estimate species-specific biomass density. We compared the accuracy of five apportionment methods for estimating pelagic fish biomass density using simulated communities with known fish numbers that mimic Lakes Superior, Michigan, and Ontario, representing a range of fish community complexities. Across all apportionment methods, the error in the estimated biomass generally declined with increasing effort, but methods that accounted for community composition changes with water column depth performed best. Correlations between trawl catch and the true species composition were highest when more fish were caught, highlighting the benefits of targeted trawling in locations of high fish density. Pelagic fish surveys should incorporate geographic and water column depth stratification in the survey design, use apportionment methods that account for species-specific depth differences, target midwater trawling effort in areas of high fish density, and include at least 15 midwater trawls. With relatively basic biological information, simulations of fish communities and sampling programs can optimize effort allocation and reduce error in biomass estimates.

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34

Desiderà, E., P. Guidetti, P. Panzalis, A. Navone, CA Valentini-Poirrier, P. Boissery, C. Gervaise, and L. Di Iorio. "Acoustic fish communities: sound diversity of rocky habitats reflects fish species diversity." Marine Ecology Progress Series 608 (January 3, 2019): 183–97. http://dx.doi.org/10.3354/meps12812.

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35

Ampofo, Joseph A., and G. C. Clerk. "Infestation of fish-culturing communities with fish-borne bacteria: The Ghanaian case." International Journal of Environmental Health Research 12, no. 3 (September 2002): 277–82. http://dx.doi.org/10.1080/0960312021000001032.

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36

Wang, Xiaoyang, Fan Li, Fei Shao, Hongjun Song, Na Song, Xiaomin Zhang, and Linlin Zhao. "Exploring Seasonal Variations in Fish Communities: A Study of the Yellow River Estuary and Its Adjacent Waters Using eDNA and Trawl Surveys." Fishes 9, no. 6 (May 23, 2024): 192. http://dx.doi.org/10.3390/fishes9060192.

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The Yellow River Estuary and its adjacent waters serve as crucial spawning, foraging, and nursery areas for marine organisms, possessing abundant biological resources. Monitoring fish communities provides a baseline for implementing the sustainable utilization of marine resources. In this study, data were collected from 15 spring surface and bottom sites and 17 summer surface sites using eDNA and trawl surveys. The results showed that 37, 40, and 35 fish species were detected using eDNA in the spring (surface and bottom) and summer (surface), respectively, with 38 fish species caught during summer trawling. The dominant species mainly belonged to Engraulidae of Clupeiformes in the spring and Gobiidae of Perciformes in the summer, characterized by smaller-sized, short-lived, and pelagic fish species. The summer surface communities exhibited higher diversity than the spring surface and bottom communities. NMDS analysis revealed a degree of seasonal differences in fish communities and that there may be a lack of vertical stratification in the spring communities. The pH and DO were identified as the key environmental factors affecting the fish community. Additionally, the combination of eDNA and trawl surveys was regarded as a superior survey method. Our study provides valuable information for understanding seasonal fish communities in the Yellow River Estuary and its adjacent waters, contributing to fishery resource management and conservation in the region.

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37

Ikomi, R. B., O. Odum, and M. Erueseraise. "Fish communities of the Ovwere Stream in the Niger Delta Area, Nigeria." Acta Ichthyologica et Piscatoria 27, no. 2 (December 31, 1997): 113–25. http://dx.doi.org/10.3750/aip1997.27.2.07.

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38

Pollino, Carmel A., Pat Feehan, Michael R. Grace, and Barry T. Hart. "Reply to the comment by Crook and Koster (2006) 'Temporal change in fish assemblages in the lower Goulburn River, south-eastern Australia'." Marine and Freshwater Research 57, no. 3 (2006): 309. http://dx.doi.org/10.1071/mf05145.

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In an earlier paper, multivariate statistics were used on historic fisheries data sets to show spatial differences between fish communities in the Goulburn Catchment (Victoria, Australia). In this reply paper, some further statistical analyses are presented to provide evidence for the assertion that fish communities at each site were stable over the temporal scale of the data was valid. Indeed, evidence for the stabilisation and persistence of fish communities after a major disturbance has also been recognised in other studies. Furthermore, in making judgements about the stability and persistence of fish communities, the scale of a study is an important factor, with patterns at the catchment scale often not being the same as those at smaller spatial scales.

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39

VALTONEN, E. T., K. PULKKINEN, R. POULIN, and M. JULKUNEN. "The structure of parasite component communities in brackish water fishes of the northeastern Baltic Sea." Parasitology 122, no. 4 (April 2001): 471–81. http://dx.doi.org/10.1017/s0031182001007491.

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We used nestedness analysis to seek non-random patterns in the structure of component communities of metazoan parasites collected from 31 sympatric fish species from the northeastern Bothnian Bay, the most oligohaline area of the Baltic Sea. Only 8 marine parasite species were found among the 63 species recorded, although some marine fish species reproduce in the bay and others occasionally visit the area. Marine parasite species can utilize both freshwater and marine fish species as intermediate or final hosts, and marine fish can harbour freshwater parasite species. This exchange of parasite species between marine and freshwater fish has probably resulted from ecological factors acting over short time scales rather than from evolutionary processes acting over longer time; the key factor probably being the immediate presence of suitable intermediate and definitive hosts. Marine fish were expected to harbour species-poor parasite communities consisting mainly of generalists acquired from the sympatric freshwater fish species, which would result in a nested pattern among the different component communities. However, an anti-nested pattern was found in the component communities of metazoan parasites of fishes from the Bothnian Bay. A likely explanation for the observed pattern is that there are specialist parasite species, the majority of which are cestodes, in some of the freshwater fish species which otherwise have depauperate parasite communities.

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40

Soeprijadi, Liliek, Endang Yuli, Edi Susilo, and Rudianto Rudianto. "Model Joint Business Group Based Knowledge for Fishermen Community Empowerment Strategies (Case Study of Business Diversification on Solid Capture Region Cirebon City)." Business and Management Horizons 1, no. 1 (April 5, 2013): 96. http://dx.doi.org/10.5296/bmh.v1i1.3485.

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The purpose of this study was to analyze the effect of public capital fishing, fish processing business and micro-business skills to the programs and activities of the agency joint venture (KUB) coastal fishing town of Cirebon: to analyze the effect of public capital fishing, fish processing business and micro-enterprise skills through the agency the joint venture (KUB) fisherman exchange coastal fishing town of Cirebon: to analyze the effect of public capital fishing, fish processing business and micro-enterprise skills through a joint venture group institutions (KUB) and exchange fishing to conservation of fish resources in the coastal city of Cirebon , and to formulate a model of the joint venture (KUB) knowledge as a strategy of empowerment of fishing communities in the city of Cirebon. Analysis of regression weights measurement models with business groups (KUB) based knowledge as a fishing community empowerment strategy was as follows: capital fishing communities and micro-enterprise skills significantly influence the institutional joint venture (KUB) Cirebon fishermen. While the fish processing business variables didn’t significantly influence the institutional joint venture (KUB) Cirebon fishermen; stock fishing communities, fish processing business and micro-enterprise skills together through the institution of the joint venture (KUB) fisherman significant effect on the value of rate of coastal fishing town of Cirebon. While the partial correlation between public capital fishing, fish processing business and micro-enterprise skills exchange coastal fishing town of Cirebon was not significant; stock fishing communities, fish processing business and micro-enterprise skills together through the institution of the joint venture (KUB) and exchange rates have a significant effect fishing conservation of coastal fish resources Cirebon. While the partial correlation between public capital fishing, fish processing business and micro-business skills for the preservation of coastal fishery resources Cirebon was not significant, and KUB institutional model based knowledge capital in the form of fishing communities, fish processing business and micro-enterprise skills through a strategy of empowerment fishing communities significantly influence conservation of fish resources in coastal city of Cirebon.

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41

Sentosa, Agus Arifin, Astri Suryandari, and Amula Nurfiarini. "TROPHIC INTERACTIONS OF THE FISH COMMUNITIES IN CIRATA RESERVOIR, WEST JAVA." Indonesian Fisheries Research Journal 27, no. 2 (September 20, 2021): 79. http://dx.doi.org/10.15578/ifrj.27.2.2021.79-90.

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The utilization of food resources by the fish communities in the Cirata Reservoir depends on the environmental conditions of the reservoir. Eutrophication and the presence of potentially invasive alien fishes could affect the trophic interactions of food utilization by the fish communities in the Cirata reservoir. This study aimed to analyze the trophic interactions of the fish communities in the Cirata Reservoir, West Java. The samplings were conducted in October, December 2018, and April 2019. The fish samples were collected using experimental gill nets with different mesh sizes. The stomach contents were dissected to study their food habits under a stereoscopic microscope. Data analysis was performed using the index of preponderance, niche breadth, trophic level, and index Schoener. A total of 21 species of fishes in the Cirata Reservoir utilized food resources, including phytoplankton, zooplankton, aquatic plants/macrophytes, molluscs, insects (adult and larvae), worms, a body part of fishes and crustaceans, pellets and detritus. The fish communities had a wide range of niche between 0.00-0.32 and trophic levels between 2.00-3.63. The non-native fishes in the Cirata Reservoir had the food overlapping potential with native fishes, from low to high categories, especially from the Cichlidae. Trophic interaction of fish communities in the Cirata reservoir was still relatively stable, characterized by overlapping food niche in the low to medium categories. The fish stock enhancement effort such as fish introduction or restocking in the Cirata Reservoir could still be carried out with a precautionary approach to filling empty niches and avoiding the potential for invasive alien fish species.

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42

Akuffo, Akua S., and Kwamena K. Quagrainie. "Assessment of Household Food Security in Fish Farming Communities in Ghana." Sustainability 11, no. 10 (May 16, 2019): 2807. http://dx.doi.org/10.3390/su11102807.

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The Government of Ghana and international NGOs have been encouraging the adoption of fish farming to alleviate poverty and food insecurity through training workshops, financial contributions and creation of a fisheries ministry. Nevertheless, there is no study on how these efforts have influenced the household’s welfare, particularly their nutritional quality. Based on this, our objective is to identify the ways through which fish farming impacts the household’s nutritional quality. We hypothesize that engaging in fish farming will increase steady income flow and access to fish for the household’s direct consumption. We adopted the Propensity Score Matching (PSM) approach in a logit framework to achieve this objective and address the endogeneity from the bias of self -selection by creating a statistically similar-looking control group. The results suggest that fish farming households have higher nutritional quality and frequency of food consumed than the non-fish farming households through direct consumption. The probability of adopting fish farming increases with wealth, location, ecological zone and household size but decreases with household income per capita. The average effect of adopting fish farming on household nutritional quality is 15.5 Food Consumption Score points. Policies that encourage women to engage in not only fish processing, but production as well are advised.

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Jacobsen, Nis S., Henrik Gislason, and Ken H. Andersen. "The consequences of balanced harvesting of fish communities." Proceedings of the Royal Society B: Biological Sciences 281, no. 1775 (January 22, 2014): 20132701. http://dx.doi.org/10.1098/rspb.2013.2701.

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Balanced harvesting, where species or individuals are exploited in accordance with their productivity, has been proposed as a way to minimize the effects of fishing on marine fish communities and ecosystems. This calls for a thorough examination of the consequences balanced harvesting has on fish community structure and yield. We use a size- and trait-based model that resolves individual interactions through competition and predation to compare balanced harvesting with traditional selective harvesting, which protects juvenile fish from fishing. Four different exploitation patterns, generated by combining selective or unselective harvesting with balanced or unbalanced fishing, are compared. We find that unselective balanced fishing, where individuals are exploited in proportion to their productivity, produces a slightly larger total maximum sustainable yield than the other exploitation patterns and, for a given yield, the least change in the relative biomass composition of the fish community. Because fishing reduces competition, predation and cannibalism within the community, the total maximum sustainable yield is achieved at high exploitation rates. The yield from unselective balanced fishing is dominated by small individuals, whereas selective fishing produces a much higher proportion of large individuals in the yield. Although unselective balanced fishing is predicted to produce the highest total maximum sustainable yield and the lowest impact on trophic structure, it is effectively a fishery predominantly targeting small forage fish.

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Nhat, Nguyen Hong, Mitsuyo Saito, Mayuko Hamada, and Shin-ichi Onodera. "Evaluation of the Effects of Environmental Factors on Seasonal Variations in Fish Diversity on a Coastal Island in Western Japan." Environments 11, no. 3 (March 20, 2024): 60. http://dx.doi.org/10.3390/environments11030060.

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Coastal habitats are crucial for supporting ecological processes and serve as vital ecosystems for diverse fish species, providing essential functions such as feeding, nursery provision, and reproductive habitats. Fish communities are ecologically important components of coastal ecosystems and are affected by multiple environmental factors. Despite their importance, determining the effects of environmental factors on seasonal variations in fish species diversity and community dynamics remains a challenge. The advent of environmental DNA (eDNA) technology, an environmentally conscious approach, has resulted in considerable advancements in recent years and has been progressively adopted for marine fish population monitoring. Here, we used environmental DNA metabarcoding to study seasonal variations in fish community structure on a coastal island, and we assessed the effects of environmental factors in structuring these communities. Our findings revealed a rich diversity of 72 fish species across 40 families and 23 orders in the seawater surrounding an island of the Seto Inland Sea (SIS), Western Japan. Notably, the composition of fish communities varied significantly between seasons, with seawater temperature, salinity, and dissolved inorganic phosphorus (DIP) concentration identified as important factors correlated with fish communities’ structures. In conclusion, our study provides useful information of fish diversity, and we suggest that eDNA is a valuable technique for monitoring fish diversity in coastal areas. These findings are crucial for ecological studies and the environmental monitoring of oceanic coastal environments.

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Garnett, Jeffrey A., and Darold P. Batzer. "Longitudinal variation in community structure of floodplain fishes along two rivers of the southeastern USA." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 9 (September 2014): 1291–302. http://dx.doi.org/10.1139/cjfas-2013-0422.

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Many studies have examined whether longitudinal variation exists in fish communities within stream channels. Yet despite the acknowledged importance of adjacent floodplain ecosystems, no study has investigated longitudinal variation in fish communities in floodplain wetlands. We conducted a study to determine if distinct fish communities exist between upper and lower river floodplains. We predicted that floodplains in the upper portions of a watershed will be dominated by opportunistic riverine fish. In contrast, floodplains farther downstream in the watershed will primarily consist of obligate floodplain fishes. We sampled fishes at 21 floodplain sites along the lengths of the Oconee–Altamaha and Broad–Savannah river systems of Georgia, USA, during the 2008 and 2009 flood seasons. A modified mark–recapture method was utilized to estimate probabilities of species detection and occupancy. Ordination and analysis of similarity using species site occupancy estimates identified two unique communities related to floodplain position, and indicator species analysis supported our hypothesis of community distinction based on life history traits. Water resource managers should consider how flood pulse character influences fish communities when regulating flow regimes.

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Fedushko, M. P., D. L. Bondarev, N. L. Gubanova, and O. V. Zhukov. "Effects of eutrophication on the long-term dynamics of juvenile fish communities." Agrology 4, no. 4 (2021): 149–64. http://dx.doi.org/10.32819/021018.

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The article reveals the patterns of the temporal dynamics of juvenile fish communities under conditions of eutrophication of water bodies. The study was conducted in the reservoirs of the nature reserve “Dniprovsko-Orilsky”. Ichthyological sampling was carried out according to standard methods used in the study of the quantitative and qualitative composition of fish communities. During the study period, representatives of 38 species of juvenile fish were established in the surveys. Numbers of fish communities showed temporal patterns and differed significantly between habitat types. At presence of the general temporary trends of abundance, each of types of biotopes is characterized by the features of temporary dynamics. The highest level of abundance was characteristic of the channel part of the Dnieper River. Lake ecosystems of the Dnieper River floodplain were characterized by a much lower level of fish abundance. Among lake ecosystems, the highest number of juvenile fish communities was established for the reservoirs of the Taromsky ledge. The highest biomass was established for the channel part of the Dnieper River. The biomass of juvenile fish communities was significantly lower in the lacustrine water bodies. Species diversity of juvenile fish communities statistically reliably depends on habitat type and year as a categorical variable. The number of species increases with the growth of community abundance up to a certain level, after which there is an exit to a plateau: the growth of abundance is not accompanied by a significant increase in the number of species in the community. Biotopes can be divided into three groups according to the level of diversity. It has been substantiated that the establishment of protected areas and the maintenance of a fish conservation regime within them is an important factor in stabilizing the temporal dynamics of abundance, diversity and sustainability of fish populations over a much larger area than the territory of the reserve itself. Young fish communities are a sensitive indicator of the temporal dynamics of the ecological state of water bodies and respond both to the negative impact of anthropogenic activities and to positive measures of protection of biological diversity in protected areas.

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Liang, Yangyang, Zijia Wang, Na Gao, Xiaoxue Qi, Juntao Zeng, Kai Cui, Wenxuan Lu, and Shijie Bai. "Variations and Interseasonal Changes in the Gut Microbial Communities of Seven Wild Fish Species in a Natural Lake with Limited Water Exchange during the Closed Fishing Season." Microorganisms 12, no. 4 (April 16, 2024): 800. http://dx.doi.org/10.3390/microorganisms12040800.

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The gut microbiota of fish is crucial for their growth, development, nutrient uptake, physiological balance, and disease resistance. Yet our knowledge of these microbial communities in wild fish populations in their natural ecosystems is insufficient. This study systematically examined the gut microbial communities of seven wild fish species in Chaohu Lake, a fishing-restricted area with minimal water turnover, across four seasons. We found significant variations in gut microbial community structures among species. Additionally, we observed significant seasonal and regional variations in the gut microbial communities. The Chaohu Lake fish gut microbial communities were predominantly composed of the phyla Firmicutes, Proteobacteria(Gamma), Proteobacteria(Alpha), Actinobacteriota, and Cyanobacteria. At the genus level, Aeromonas, Cetobacterium, Clostridium sensu stricto 1, Romboutsia, and Pseudomonas emerged as the most prevalent. A co-occurrence network analysis revealed that C. auratus, C. carpio, and C. brachygnathus possessed more complex and robust gut microbial networks than H. molitrix, C. alburnus, C. ectenes taihuensis, and A. nobilis. Certain microbial groups, such as Clostridium sensu stricto 1, Romboutsia, and Pseudomonas, were both dominant and keystone in the fish gut microbial network. Our study offers a new approach for studying the wild fish gut microbiota in natural, controlled environments. It offers an in-depth understanding of gut microbial communities in wild fish living in stable, limited water exchange natural environments.

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Syarki, Maria, Anastasia Sidorova, Andrey Georgiev, and Julia Slastina. "Biological resources of Lake Kroshnozero (North-West of Russia)." E3S Web of Conferences 420 (2023): 09007. http://dx.doi.org/10.1051/e3sconf/202342009007.

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A comprehensive analysis of plankton and benthic communities, composition, structure and quantitative characteristics indicate that the ecosystem of Lake Kroshnozero has a eutrophic status or a transitional one between the β-mesotrophic and α-eutrophic. Plankton communities are in a stable state and provide a sustainable food base for planktivores fishes. A slight decrease in the quantitative indicators of benthos is possibly due to the methodological features of sampling and the underestimation of littoral communities. The composition and structure of benthic communities have been preserved since previous studies in the 50-90s of the last century. The ichthyofauna of Kroshnozero includes 13 fish species. Whitefish, zander, and vendace are fish of commercial importance. Fish of secondary importance are bream, perch, ruff, roach, and pike. Fish such as bleak, grayling sculpin, and burbot are relatively rare and do not serve as objects of fishing. Model calculations of fish productivity of planktivores, benthophages and predatory fish, taking into account losses to 2.3 kcal/m2 per season or 22.6 kg/ha. The average modelled ichthyomass is 4.6 kg/ha. Possible catches are one third of fish productivity equal to 7.5 kg/ha. To improve the quality and quantity of commercial stocks, recommendations are given to preserve the conditions for the reproduction and growth of valuable fish.

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Bănăduc, Doru, Victor Stroilă, and Angela Curtean-Bănăduc. "The Fish Fauna of the Timiş River (Banat, Romania)." Transylvanian Review of Systematical and Ecological Research 15, no. 3 (December 1, 2013): 145–72. http://dx.doi.org/10.2478/trser-2013-0040.

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ABSTRACT This study assessed the fish communities’ diversity and structure spatial dynamic in the Timiş River, in correlation with the biotope characteristics to establish management measures. The results are based on quantitative fish samples from 21 stations of the Timiş River, situated between its sources and the Romanian-Serbian border (241 km). The sampling campaign was conducted during 2011-2012. In the reference zone 32 fish species were identified, belonging to 27 genera and nine families. The fish associations present a high diversity along the entire Romanian sector of the Timiş River. The fish communities’ diversity distribution patterns reflect the biotope conditions diversity and the human impact factors presence and degree on the Timiş River sectors. The fish communities’ diversity assessment in correlation to biotope characteristics allows the establishment of priorities, objectives and measures for the sustainable management of the studied river biodiversity.

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Ainsworth, T. D., M. Fine, L. L. Blackall, and O. Hoegh-Guldberg. "Fluorescence In Situ Hybridization and Spectral Imaging of Coral-Associated Bacterial Communities." Applied and Environmental Microbiology 72, no. 4 (April 2006): 3016–20. http://dx.doi.org/10.1128/aem.72.4.3016-3020.2006.

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ABSTRACT Microbial communities play important roles in the functioning of coral reef communities. However, extensive autofluorescence of coral tissues and endosymbionts limits the application of standard fluorescence in situ hybridization (FISH) techniques for the identification of the coral-associated bacterial communities. This study overcomes these limitations by combining FISH and spectral imaging.

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