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Journal articles on the topic 'Large fish indicator (LFI)'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Modica, Larissa, Francisco Velasco, Izaskun Preciado, Maria Soto, and Simon P. R. Greenstreet. "Development of the large fish indicator and associated target for a Northeast Atlantic fish community." ICES Journal of Marine Science 71, no. 9 (2014): 2403–15. http://dx.doi.org/10.1093/icesjms/fsu101.

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AbstractThe large fish indicator (LFI) was developed to support the North Sea fish community Ecological Quality Objective (EcoQO) pilot study, intended to establish an operational ecosystem approach to management. Subsequently, procedures established in the North Sea were applied to the Celtic Sea to derive an LFI and target specific to this region. The Marine Strategy Framework Directive (MSFD) requires EU Member States sharing marine regions to cooperate using the Regional Seas Conventions, and using indicators already adopted by them. The MSFD explicitly suggests the LFI as a foodweb indica

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Shephard, Samuel, David G. Reid, and Simon P. R. Greenstreet. "Interpreting the large fish indicator for the Celtic Sea." ICES Journal of Marine Science 68, no. 9 (2011): 1963–72. http://dx.doi.org/10.1093/icesjms/fsr114.

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Abstract Shephard, S., Reid, D. G., and Greenstreet, S. P. R. 2011. Interpreting the large fish indicator for the Celtic Sea. – ICES Journal of Marine Science, 68: 1963–1972. The large fish indicator (LFI) was developed in the North Sea as a size-based indicator of fish community state. It is now established as OSPAR's fish community Ecological Quality Objective (EcoQO) metric and will be applied across all OSPAR regions. To produce a protocol for use when developing regional LFIs, the North Sea experience is interpreted using data from the Celtic Sea. Differences in fish community species com

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Shephard, Samuel, Hans D. Gerritsen, Michel J. Kaiser, Holly S. Truszkowska, and David G. Reid. "Fishing and environment drive spatial heterogeneity in Celtic Sea fish community size structure." ICES Journal of Marine Science 68, no. 10 (2011): 2106–13. http://dx.doi.org/10.1093/icesjms/fsr137.

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Abstract Shephard, S., Gerritsen, H. D., Kaiser, M. J., Truszkowska, H. S., and Reid, D. G. 2011. Fishing and environment drive spatial heterogeneity in Celtic Sea fish community size structure. – ICES Journal of Marine Science, 68: 2106–2113. The Large Fish Indicator (LFI) is a univariate size-based indicator of fish community state that has been selected to support the OSPAR fish community Ecological Quality Objective (EcoQO). To operate this EcoQO, a survey-based LFI for each OSPAR region needs to be developed. However, fish communities in these regions are spatially heterogeneous, and ther

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Shephard, Samuel, Tak Fung, Jennifer E. Houle, Keith D. Farnsworth, David G. Reid, and Axel G. Rossberg. "Size-selective fishing drives species composition in the Celtic Sea." ICES Journal of Marine Science 69, no. 2 (2012): 223–34. http://dx.doi.org/10.1093/icesjms/fsr200.

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Abstract Shephard, S., Fung, T., Houle, J. E., Farnsworth, K. D., Reid, D. G., and Rossberg, A. G. 2012. Size-selective fishing drives species composition in the Celtic Sea. – ICES Journal of Marine Science, 69: 223–234. Fishing alters community size structure by selectively removing larger individual fish and by changing the relative abundance of different-sized species. To assess the relative importance of individual- and species-level effects, two indices of fish community structure were compared, the relative abundance of large fish individuals (large fish indicator, LFI) and the relative

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ENGELHARD, GEORG H., CHRISTOPHER P. LYNAM, BERNARDO GARCÍA-CARRERAS, PAUL J. DOLDER, and STEVEN MACKINSON. "Effort reduction and the large fish indicator: spatial trends reveal positive impacts of recent European fleet reduction schemes." Environmental Conservation 42, no. 3 (2015): 227–36. http://dx.doi.org/10.1017/s0376892915000077.

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SUMMARYThe large fish indicator (LFI), or ‘proportion of fish greater than 40 cm length in bottom trawl surveys,’ is a frequently debated indicator of Good Environmental Status in European regional seas. How does the LFI respond to changes in fishing pressure? This question is addressed here through analysis of fine-scale spatial trends in the LFI within the North Sea, compared between two periods of contrasting fisheries management: 1983–1999 and 2000–2012, respectively, before and after the onset of the European Union's fleet reduction scheme. Over the entire period, the LFI has decreased in

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Engelhard, G. H., C. P. Lynam, B. Garcia-Carreras, and P. J. Dolder. "Effort reduction and the large fish indicator: spatial trends reveal positive impacts of recent European fleet reduction schemes." Environmental Conservation 42, no. 3 (2014): 227–36. https://doi.org/10.1017/S0376892915000077.

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<strong>Summary</strong> The large fish indicator (LFI), or ‘proportion of fish greater than 40 cm length in bottom trawl surveys,’ is a frequently debated indicator of Good Environmental Status in European regional seas. How does the LFI respond to changes in fishing pressure? This question is addressed here through analysis of fine-scale spatial trends in the LFI within the North Sea, compared between two periods of contrasting fisheries management: 1983–1999 and 2000–2012, respectively, before and after the onset of the Eu

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Sundelöf, Andreas, Håkan Wennhage, and Henrik Svedäng. "A red herring from the Öresund (ICES40G2): the apparent recovery of the Large Fish Indicator (LFI) in the North Sea hides a non-trawled area." ICES Journal of Marine Science 70, no. 6 (2013): 1081–84. http://dx.doi.org/10.1093/icesjms/fst117.

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Abstract Sundelöf, A., Wennhage, H., and Svedäng, H. 2013. A red herring from the Öresund (ICES40G2): the apparent recovery of the Large Fish Indicator (LFI) in the North Sea hides a non-trawled area. – ICES Journal of Marine Science, 70: 1081–1084. As reported in a number of previous papers in this journal, the Large Fish Indicator (LFI) was developed for the North Sea. ICES Statistical Rectangle 40G2 was accidentally included in the North Sea calculations of LFI for 2004, 2007 and 2008. This inclusion significantly increased the LFI and was subsequently removed from the analysis. We identify

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Greenstreet, Simon P. R., Stuart I. Rogers, Jake C. Rice, et al. "Development of the EcoQO for the North Sea fish community." ICES Journal of Marine Science 68, no. 1 (2010): 1–11. http://dx.doi.org/10.1093/icesjms/fsq156.

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Abstract Greenstreet, S. P. R., Rogers, S. I., Rice, J. C., Piet, G. J., Guirey, E. J., Fraser, H. M., and Fryer, R. J. 2011. Development of the EcoQO for the North Sea fish community. – ICES Journal of Marine Science, 68: 1–11. Development of the Ecological Quality Objective (EcoQO) for the North Sea demersal fish community is described. Size-based metrics were identified as the most effective indicators of the state of the community, but such metrics are also sensitive to environmental influence. Redefining the large fish indicator (LFI) produced a metric more sensitive to fishing-induced ch

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Mindel, Beth L., Francis C. Neat, Thomas J. Webb, and Julia L. Blanchard. "Size-based indicators show depth-dependent change over time in the deep sea." ICES Journal of Marine Science 75, no. 1 (2017): 113–21. http://dx.doi.org/10.1093/icesjms/fsx110.

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Abstract Size-based indicators are well established as a management tool in shelf seas as they respond to changes in fishing pressure and describe important aspects of community function. In the deep sea, however, vital rates are much slower and body size relationships vary with depth, making it less clear how size-based indicators can be applied and whether they are appropriate for detecting changes through time. The deep-sea fish stocks of the North Atlantic underwent a period of exploitation followed by management and conservation action that relieved this pressure. We used data from a deep

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Česonienė, Laima, Daiva Šileikienė, and Midona Dapkienė. "Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania." Water 12, no. 2 (2020): 500. http://dx.doi.org/10.3390/w12020500.

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The larger and deeper lakes and ponds are, the better the conditions for spontaneous water purification, slower hydrobiological processes and slower accumulation of sediment. The goal of this research was to assess the ecological status of selected Lithuanian lentic water bodies and the impact of morphometric indicators on water quality. Multiple studies were conducted on 29 lakes and 10 ponds located throughout Lithuania in 2014–2018. The study proved that higher maxima and average depths of lakes correlate with lower Ptotal, Ntotal yield and macrophyte taxonomic composition values, indicatin

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Kozobrod, Inna, M. Pyatinsky, and Elena Vlasenko. "AZOV SEA VIMBA INDICATOR ASSESSMENT OF THE STATE OF FISH POPULATION IN TERMS OF LACK OF BIOLOGICAL DATA BY LBI MODEL." Fisheries 2021, no. 3 (2021): 68–75. http://dx.doi.org/10.37663/0131-6184-2021-3-68-75.

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Stock assessment of vimba population Vimba vimba (Linnaeus, 1758) in period 2015–2020 was performed by qualitative indicator method LBI (Length-Based Indicators) that allows to assess qualitative characteristics of the population and fisheries and MSY biological reference points. The indicator, qualitative approach to stock assessment was applied due to absence vimba population of stable stock-recruitment relationship (due to artificial reproduction exist), which makes impossible to apply surplus production approach to solve production equation dB/dt.  LBI model was performed based on av

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Česonienė, Laima, Midona Dapkienė, and Petras Punys. "Assessment of the Impact of Small Hydropower Plants on the Ecological Status Indicators of Water Bodies: A Case Study in Lithuania." Water 13, no. 4 (2021): 433. http://dx.doi.org/10.3390/w13040433.

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Hydropower plants produce renewable and sustainable energy but affect the river’s physico-chemical characteristics and change the abundance and composition of the aquatic organisms. The impact of large HPPs on the ecological conditions of surface water bodies have been extensively studied, but less attention has been paid to environmental impact studies of small hydropower plants (SHPs). The impact of hydropeaking on both the river flow regime and ecosystems has been well-studied for peaking mode plants, mainly medium to large-sized ones. However, for small hydroelectric power plants, and espe

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Edelist, Dor, Daniel Golani, and Ehud Spanier. "First implementation of the Large Fish Index (LFI) in the eastern Mediterranean." Scientia Marina 78, no. 2 (2014): 185–92. http://dx.doi.org/10.3989/scimar.03936.26a.

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Hutorowicz, Andrzej. "Use of Hydroacoustic Methods to Assess Ecological Status Based on Fish: A Case Study of Lake Dejguny (Poland)." Water 16, no. 2 (2024): 282. http://dx.doi.org/10.3390/w16020282.

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The idea of the article was to verify the thesis that acoustic studies of ichthyofauna in lakes provide sufficient information to determine the necessity (or lack thereof) of carrying out a full procedure for assessing the ecological status based on fish. The manuscript compares acoustic data collected in 2008 and 2021 in Lake Dejguny (Poland) as a result of acquisition carried out with the same EY-500 echosounder, on the same routes (transects), and the echogram analyses were carried out using software dedicated to this echosounder. Target strength (TS) distribution was determined in the lake

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Fung, Tak, Keith D. Farnsworth, David G. Reid, and Axel G. Rossberg. "Recent data suggest no further recovery in North Sea Large Fish Indicator." ICES Journal of Marine Science 69, no. 2 (2012): 235–39. http://dx.doi.org/10.1093/icesjms/fsr206.

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Abstract Fung, T., Farnsworth, K. D., Reid, D. G., Rossberg, A. G. 2012. Recent data suggest no further recovery in North Sea Large Fish Indicator. – ICES Journal of Marine Science, 69: 235–239. We detail the calculations of North Sea Large Fish Indicator values for 2009–2011, demonstrating an apparent stall in recovery. Therefore, recovery to the Marine Strategy Framework Directive's good environmental status of 0.3 by the 2020 deadline now looks less certain and may take longer than was expected using data from 2006 to 2008.

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Greenstreet, Simon P. R., Stuart I. Rogers, Jake C. Rice, et al. "A reassessment of trends in the North Sea Large Fish Indicator and a re-evaluation of earlier conclusions." ICES Journal of Marine Science 69, no. 2 (2012): 343–45. http://dx.doi.org/10.1093/icesjms/fsr201.

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Abstract Greenstreet, S. P. R., Rogers, S. I., Rice, J. C., Piet, G. J., Guirey, E. J., Fraser, H. M., and Fryer, R. J. 2012. A reassessment of trends in the North Sea Large Fish Indicator and a re-evaluation of earlier conclusions. – ICES Journal of Marine Science, 69: 343–345. Previous analysis of the Large Fish Indicator, the basis for the North Sea “fish communities” EcoQO, suggested a strong recovery between 2001 and 2008. Discovery of a mistake in this earlier analysis now suggests that this recovery is not as strong as first thought, but reanalysis of the corrected data still supports t

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Trenkel, Verena, and Laurent Bergen. "A fisheries acoustic multi-frequency indicator to inform on large scale spatial patterns of aquatic pelagic ecosystems." Ecological indicators 30 (July 1, 2013): 72–79. https://doi.org/10.1016/j.ecolind.2013.02.006.

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Fisheries acoustic instruments provide information on four major groups in aquatic ecosystems: fish with and without swim bladder (tertiary and quaternary consumers), fluidlike zooplankton (secondary consumers) and small gas bearing organisms such as larval fish and phytoplankton (predominantly primary producers). We entertain that this information is useable to describe the spatial structure of organism groups in pelagic ecosystems. The proposal we make is based on a multi-frequency indicator that synthesises in a single metric the shape of the acoustic frequency response of different organis

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Houle, Jennifer E., Keith D. Farnsworth, Axel G. Rossberg, and David G. Reid. "Assessing the sensitivity and specificity of fish community indicators to management action." Canadian Journal of Fisheries and Aquatic Sciences 69, no. 6 (2012): 1065–79. http://dx.doi.org/10.1139/f2012-044.

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We assessed ten trophodynamic indicators of ecosystem status for their sensitivity and specificity to fishing management using a size-resolved multispecies fish community model. The responses of indicators to fishing depended on effort and the size selectivity (sigmoid or Gaussian) of fishing mortality. The highest specificity against sigmoid (trawl-like) size selection was seen from inverse fishing pressure and the large fish indicator, but for Gaussian size selection, the large species indicator was most specific. Biomass, mean trophic level of the community and of the catch, and fishing in

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Gandiwa, Patience Zisadza, Samuel Chiganze, Paul Chirombe, Clayton Mashapa, Never Muboko, and Edson Gandiwa. "Abundance and Distribution of African Fish Eagles along Major Rivers in Gonarezhou National Park, Zimbabwe." Greener Journal of Biological Sciences 3, no. 9 (2013): 336–41. https://doi.org/10.15580/gjbs.2013.9.111213952.

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African fish eagles (<em>Haliaeetus vocifer</em>) are important birds of prey and indicator of ecosystem integrity in aquatic environments. We assessed the population abundance and spatial distribution of African fish eagles along three major rivers in Gonarezhou National Park, Zimbabwe. Data were collected using walked transect surveys along Mwenezi, Runde and Save rivers in Gonarezhou between March and April 2011. A total of 54 African fish eagles were recorded with an average density of 0.62 individuals per km. African fish eagles were mostly distributed in areas with large water pools alon

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Pin, Kakada, Savat Nut, Zeb Hogan, et al. "Cambodian Freshwater Fish Assemblage Structure and Distribution Patterns: Using a Large-Scale Monitoring Network to Understand the Dynamics and Management Implications of Species Clusters in a Global Biodiversity Hotspot." Water 12, no. 9 (2020): 2506. http://dx.doi.org/10.3390/w12092506.

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Mekong River Basin is one of the world’s fish biodiversity hotspots. Fisheries of the Cambodian Mekong are characterized by high diversity and productivity. However, few studies have focused on broad scale patterns and fish assemblage structure of this important system at a national level. Here, we describe spatial and seasonal variation in fish assemblages by analyzing one year of daily fish catch data sampled at 32 sites covering Cambodia’s main inland water bodies. We recorded 125 fish species. Four clusters were distinguished based on assemblage composition similarity, and 95 indicator spe

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Kuczuk, Anna, Janusz Pospolita, and Jacek Pieczonka. "Emergy analysis of pond fish farming – a case study for a large fish farm in Poland." Economics and Environment 85, no. 2 (2023): 369–94. http://dx.doi.org/10.34659/eis.2023.85.2.555.

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The immediate goal of the article is an emergy analysis of fish production on an exemplary fish farm. Additionally, it was compared, in terms of environmental burden, with other exemplary agricultural productions. On the basis of the calculated emergy inflows, selected emergy indicators (ELR, EYR, REN) were calculated, showing the scale of use of renewable and non-renewable resources. The results show that the analysed fish production does not burden the environment and largely uses renewable resources, unlike other intensive agricultural productions. The ELR value was compared with its values

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Eger, Aaron, Catherine Pigeon-Dubeau, and Lauriane Sibileau. "Parrotfish Body Size As An Indicator of Diurnal Fish Species Richness On Fringing Coral Reefs in Barbados." McGill Science Undergraduate Research Journal 9, no. 1 (2014): 11–16. http://dx.doi.org/10.26443/msurj.v9i1.155.

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Background: Coral reefs around the world are host to some of the most condensed and varied ecosystems. However, over the past decades, their biodiversity has alarmingly decreased. A rapid and reliable way of assessing their status is urgently needed to monitor and prevent their decline. The purpose of this study is to assess whether or not family Scaridae (common name: parrotfish) body size can be used as an index to evaluate the diurnal fish diversity on coral reefs. Methods: We selected 6 accessible reefs on the West coast of Barbados and measured the size of parrotfish we encountered,

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Arts, Michael T., and W. Gary Sprules. "Large Daphnia as an indicator of fish predation on another zooplankton species (Holopedium gibberum Zaddach)." SIL Proceedings, 1922-2010 23, no. 3 (1988): 1685–91. http://dx.doi.org/10.1080/03680770.1987.11898086.

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Pazhayamadom, Deepak George, Ciarán J. Kelly, Emer Rogan, and Edward A. Codling. "Self-starting cumulative sum harvest control rule (SS-CUSUM-HCR) for status-quo management of data-limited fisheries." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 3 (2016): 366–81. http://dx.doi.org/10.1139/cjfas-2015-0039.

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We demonstrate a harvest control rule based on the self-starting cumulative sum (SS-CUSUM) control chart that can maintain a fish stock at its starting (status-quo) level. The SS-CUSUM is an indicator monitoring tool commonly used in quality control engineering and does not require a long time series or predefined reference point for detecting temporal trends. The reference points in SS-CUSUM are calibrated in the form of running means that are updated on an ongoing basis when new observations become available. The SS-CUSUM can be initiated with as few as two observations in the time series an

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Davie, Alec W., and Joe B. Pera. "The Fish Health Risk Indicator: linking water quality and river flow data with fish health to improve our predictive capacity around fish death events." Marine and Freshwater Research 73, no. 2 (2022): 193. http://dx.doi.org/10.1071/mf20360.

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Severe drought conditions contributed to three mass fish mortality events in the Darling River near Menindee, part of the Murray–Darling Basin, Australia, during the summer of 2018–19. An independent assessment recommended the need for improved modelling approaches to identify when sections of rivers may be more susceptible to fish kill events. We present a geographic information system (GIS)-based tool that combines meteorological forecasts with river flow and algal biomass datasets to identify river reaches where additional stresses on fish health may produce an increased risk of mass fish d

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Blazhekovikj-Dimovska, Dijana, Stojmir Stojanovski, Jouni Taskinen, Stoe Smiljkov, and Biljana Rimcheska. "Glochidia Infection of Endemic Fishes from Lake Prespa, N. Macedonia." Hydrobiology 2, no. 1 (2022): 36–43. http://dx.doi.org/10.3390/hydrobiology2010003.

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Large freshwater mussels (Unionida) are long-lived, have large bodies, and produce thousands to millions of larvae (glochidia) that usually must attach to host fish tissue to complete their life cycle. This is an obligate parasitic stage of mussel larvae. However, less than one in onemillion find a suitable host and survive. The degree of host specificity varies among unionid species, from specialists that can successfully parasitize only one or a few closely related fish species to generalists that can complete development on a taxonomically broad range of fish species. In addition, freshwate

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Höök, Tomas O., Nicholas I. Kalejs, Thomas Axenrot, Martin Ogonowski, and Alfred Sandström. "Stable isotope and fatty acid variation of a planktivorous fish among and within large lakes." PLOS ONE 19, no. 7 (2024): e0304089. http://dx.doi.org/10.1371/journal.pone.0304089.

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Aquatic food webs are spatially complex, potentially contributing to intraspecific variability in production pathway reliance of intermediate trophic level consumers. Variation in trophic reliance may be described by well-established trophic indicators, like stable isotope ratios (δ13C, δ15N), along with emerging trophic indicators, such as fatty acid composition. We evaluated stable isotope ratios and fatty acid profiles of European smelt (Osmerus eperlanus) among and within distinct regions of three large Swedish lakes (Hjälmaren, Mälaren, Vättern) which differed in trophic status. We expect

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Amosova, V. М., S. V. Ivanov, and S. Yu Gulyugin. "Non-model method for the stock status assessing and catch forecasting of the Flounder 26+28 subdivisions ICES in the Baltic Sea." Trudy VNIRO 196 (June 20, 2024): 124–33. http://dx.doi.org/10.36038/2307-3497-2024-196-124-133.

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The aim of this article: to assess the flounder stock state in the 26+28 ICES subdivisions of the Baltic Sea and forecast its catch in the Russian part of the 26th ICES subdivision using non-model methods.Methods used: The qualitative condition of the stock was assessed by length (LBI method — Length Based Indicators). To develop catch recommendations for flounder stock in 26+28 ICES subdivision, as well as in the Russian sea area, was used an approach for a stock category 3 (ICES classification), based on a combined biomass index for fish from bottom trawl surveys. The assessment was based on

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Lyon, Jarod P., Tomas Bird, Simon Nicol, et al. "Efficiency of electrofishing in turbid lowland rivers: implications for measuring temporal change in fish populations." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 6 (2014): 878–86. http://dx.doi.org/10.1139/cjfas-2013-0287.

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To quantify how electrofishing capture probability varies over time and across physiochemical and disturbance gradients in a turbid lowland river, we tagged between 68 and 95 fish·year−1 with radio transmitters and up to 424 fish·year−1 with external and passive integrated transponder (PIT) tags. We surveyed the site noninvasively using radiotelemetry to determine which of the radio-tagged fish were present (effectively closing the radio-tagged population to emigration) and then electrofished to estimate the proportion of available fish that were captured based on both this and standard mark–r

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Hur, Jun, Min-Ho Jang, Kyung-Hoon Shin, Kyung-Lak Lee, and Kwang-Hyeon Chang. "Ecological Niche Space of Fish Communities in Impounded Sections of Large Rivers: Its Application to Assessment of the Impact of Weirs on River Ecosystems." Sustainability 10, no. 12 (2018): 4784. http://dx.doi.org/10.3390/su10124784.

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To estimate the impact of weirs on large river fish communities, we applied the ecological niche space (ENS) measured quantitatively using carbon and nitrogen stable isotope ratios to the monitoring of effects of weirs constructed on four major rivers in Korea. ENS was calculated using the Bayesian stable isotope in R statistics. The ENS of fish communities showed persistent differences between upstream and downstream areas of all studied weirs. The ENSs of omnivores were larger in upstream impounded areas but the ENSs of predator species, both endemic (Erythroculter erythropterus) and exotic

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Thomas, Aline, Fabrice Crivello, Bernard Mazoyer, Stephanie Debette, Christophe Tzourio, and Cecilia Samieri. "Fish Intake and MRI Burden of Cerebrovascular Disease in Older Adults." Neurology 97, no. 22 (2021): e2213-e2222. http://dx.doi.org/10.1212/wnl.0000000000012916.

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Background and ObjectivesFish intake may prevent cerebrovascular disease (CVD), yet the mechanisms are unclear, especially regarding its impact on subclinical damage. Assuming that fish may have pleiotropic effect on cerebrovascular health, we investigated the association of fish intake with global CVD burden based on brain MRI markers.MethodsThis cross-sectional analysis included participants from the Three-City Dijon population-based cohort (age ≥65 years) without dementia, stroke, or history of hospitalized cardiovascular disease who underwent brain MRI with automated assessment of white ma

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Stamoulis, Antonios, and Els Torreele. "The response of the North Sea demersal fish community to changing fishing pressure as seen through the prism of the large fish indicator." Fisheries Research 181 (September 2016): 222–33. http://dx.doi.org/10.1016/j.fishres.2016.05.002.

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Wang, Sai, Tuan-Tuan Wang, Jin-Peng Tang, et al. "Longitudinal variation in fish prey utilization, trophic guilds, and indicator species along a large subtropical river, China." Ecology and Evolution 8, no. 23 (2018): 11467–83. http://dx.doi.org/10.1002/ece3.4577.

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Probst, Wolfgang Nikolaus, Vanessa Stelzenmüller, and Heino Ove Fock. "Using cross-correlations to assess the relationship between time-lagged pressure and state indicators: an exemplary analysis of North Sea fish population indicators." ICES Journal of Marine Science 69, no. 4 (2012): 670–81. http://dx.doi.org/10.1093/icesjms/fss015.

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Abstract Probst, W. N., Stelzenmüller, V., and Fock, H. 2012. Using cross-correlations to assess the relationship between time-lagged pressure and state indicators: an exemplary analysis of North Sea fish population indicators. – ICES Journal of Marine Science, 69: 670–681. A sustainable ecosystem-based management, as postulated by the European Union-Marine Strategy Framework Directive (MSFD), requires a sound understanding of the cause–effect relationships between human pressures and ecosystem states. In this study, cross-correlations are used to introduce a protocol for the analysis of time-

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Hammond, S. Austin, Christopher J. Nelson, and Caren C. Helbing. "Environmental influences on the epigenomes of herpetofauna and fish." Biochemistry and Cell Biology 94, no. 2 (2016): 95–100. http://dx.doi.org/10.1139/bcb-2015-0111.

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Herpetofauna (amphibians and reptiles) and fish represent important sentinel and indicator species for environmental and ecosystem health. It is widely accepted that the epigenome plays an important role in gene expression regulation. Environmental stimuli, including temperature and pollutants, influence gene activity, and there is growing evidence demonstrating that an important mechanism is through modulation of the epigenome. This has been primarily studied in human and mammalian models; relatively little is known about the impact of environmental conditions or pollutants on herpetofauna or

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Pita, Pablo, Diana Fernández-Márquez, and Juan Freire. "Spatiotemporal variation in the structure of reef fish and macroalgal assemblages in a north-east Atlantic kelp forest ecosystem: implications for the management of temperate rocky reefs." Marine and Freshwater Research 69, no. 4 (2018): 525. http://dx.doi.org/10.1071/mf17193.

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Temperate rocky reefs and kelp forest ecosystems have been severely affected by overfishing, pollution and habitat destruction, and climate change is a major driver of kelp decline in many regions. Although necessary for management, ecological interactions between kelp and fish remain largely unknown in the north-east Atlantic. In the present study, underwater visual censuses (UVC) and univariate and multivariate multiple regression models were used to analyse the spatiotemporal variations in the abundance and habitat use of the rocky reef fish and macroalgae assemblages of Galicia (north-west

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Suman, Ali, Hari Eko Irianto, Fayakun Satria, and Khairul Amri. "POTENSI DAN TINGKAT PEMANFAATAN SUMBER DAYA IKAN DI WILAYAH PENGELOLAAN PERIKANAN NEGARA REPUBLIK INDONESIA (WPP NRI) TAHUN 2015 SERTA OPSI PENGELOLAANNYA." Jurnal Kebijakan Perikanan Indonesia 8, no. 2 (2017): 97. http://dx.doi.org/10.15578/jkpi.8.2.2016.97-100.

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Sumber daya ikan di perairan Indonesia merupakan salah satu modal menuju kemakmuran bagi bangsa, apabila dikelola secara berkelanjutan.Kajian potensi dan tingkat pemanfaatan tahun 2015, merupakan salah satu dasar utama dalam merumuskan pengelolaan tersebut menuju pemanfaatan sumber daya yang lestari bagi kesejahteraan bangsa. Secara keseluruhan komposisi jenis sumber daya ikan di perairan Indonesia didominasi kelompok ikan pelagis kecil sebesar 36 % dan ikan pelagis besar sebesar 25 %. Potensi sumber daya ikan di perairan Indonesia adalah sebesar 9,931 juta ton per tahun dengan potensi terting

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Bader, Steffen, Julia Gaye-Siessegger, Barbara Scholz, Mário Mota-Ferreira, and Alexander Brinker. "Obtaining accurate population estimates with reduced workload and lower fish mortality in multi-mesh gillnet sampling of a large pre-alpine lake." PLOS ONE 19, no. 3 (2024): e0299774. http://dx.doi.org/10.1371/journal.pone.0299774.

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The EU Water Framework Directive requires monitoring of the ecological status of lakes, with fish as a relevant class of biotic quality indicator, but monitoring fish populations in large lakes is demanding. This study evaluated use in Lake Constance of a novel multi-mesh gillnet modified to reduce catch numbers. In direct comparison with conventional European Committee for Standardization (CEN) nets we achieved 48% reduction in fish mortality with 38% less labour for tasks directly influenced by fish catch numbers, while maintaining comparable species composition and catch per unit effort. Co

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Le, Dung Quang, and Thanh-Khiet L. Bui. "Mercury Concentrations in Fish Species from Can Gio Mangrove Reserve and Implications for Human Health Risk." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 30, no. 2 (2025): 213–20. https://doi.org/10.14710/ik.ijms.30.2.213-220.

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Mercury (Hg) exposure in humans primarily occurs through fish consumption, making fish an important indicator of potential health risks. This study represents one of the first efforts to assess Hg levels in edible marine fish from Can Gio Mangrove Reserve (CGMR), Vietnam, providing essential baseline data for evaluating potential health risks to consumers. A total of 75 fish specimens were analyzed for mercury concentrations in their muscle tissue. Hg levels ranged from 0.02 to 0.61 mg.kg-1 dry weight, with an average concentration of 0.16 mg.kg-1 dry weight. Among the species studied, the lar

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Ross, Fiona M., Laura Chiecchio, GianPaolo Dagrada, et al. "Deletion 13, Detected by Metaphase Analysis, Is Not a Significant Prognostic Indicator In Myeloma." Blood 116, no. 21 (2010): 2980. http://dx.doi.org/10.1182/blood.v116.21.2980.2980.

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Abstract Abstract 2980 Introduction: Deletion of chromosome 13, detected by conventional chromosome analysis (CC), has been suggested to be an independent indicator of poor prognosis in myeloma (MM). With the exception of a single study using conventional therapy this has not been confirmed in multicenter randomized controlled trials which have mostly used FISH analysis. We set out to assess the prognostic value of del(13) and compare its detection by FISH and CC. Methods: We have examined the effect of del(13) in a large multicenter randomized controlled phase III trial, MRC Myeloma IX (ISRCT

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Fea, Nyree I., Robert Harcourt, and Chris Lalas. "Seasonal variation in the diet of New Zealand fur seals (Arctocephalus forsteri) at Otago Peninsula, New Zealand." Wildlife Research 26, no. 2 (1999): 147. http://dx.doi.org/10.1071/wr98024.

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We examined the diet of New Zealand fur seals (Arctocephalus forsteri) at a rookery on Otago Peninsula, New Zealand, by analysing diagnostic remains from 500 faecal samples and 84 regurgitates collected between July 1993 and September 1994. In total, 27 taxa (species or genera) were identified. Small fish were numerically dominant in faecal samples, with five fish species (three species of lanternfish (Myctophidae), ahuru (Auchenoceros punctatus) and juvenile red cod (Pseudophycis bachus)) accounting for over 90% of prey items. Regurgitates occurred only seasonally and contained predominantly

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Chukwuka, Azubuike Victor. "First Report of Fishkill Incidence in Bonny-Andoni Coastal Area, Nigeria." Croatian Journal of Fisheries 81, no. 2 (2023): 83–91. http://dx.doi.org/10.2478/cjf-2023-0010.

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Abstract A fish kill is characterised by the death of a large number of fish in a given area within a short period of time. This is an indicator that water quality and ecosystem conditions in general have deteriorated. Remote sensing data from the MODIS instrument on the Aqua and Merra-2 satellites were accessed from 18 to 22 March 2020, a period that spans before and after the fish kill was reported. Analysis of the remote sensing data shows that the fish kill was preceded by strong winds, i.e. major and sustained wind events. The maps of sea surface temperatures prior to the fish kill show t

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Chiecchio, Laura, Rebecca K. M. Protheroe, Tim Parker, et al. "Critical Importance of Conventional Cytogenetics in Detecting Prognostically Significant Chromosome 13 Deletions in Myeloma." Blood 106, no. 11 (2005): 1544. http://dx.doi.org/10.1182/blood.v106.11.1544.1544.

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Abstract Among chromosomal abnormalities described in myeloma (MM), deletion of chromosome 13 (Δ13) has been linked to a poor outcome. However, prognosis appears to vary according to the detection method used: conventional cytogenetics (CC) or FISH. We have investigated this inconsistency in a large multi-center cytogenetic study. Bone marrow samples from 814 MM patients were provided from 95 UK hospitals. FISH on purified plasma cells (n=697) and/or CC (n=577) was performed centrally: 458 samples had both tests. Sample quality was often poor, with low cell counts (median 2x107 and low plasma

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A. Nefedova, S., A. A. Korovushkin, G. M. Tunikov, O. A. Fedosova, Yu V. Yakunin, and R. V. Baryshev. "Immunoferment, Cytomorphological, Cytochemical Parameters of Fish as Ecological Indicators of Resistance to Helminthes, Passed by Fish-Eating Birds." International Journal of Engineering & Technology 7, no. 4.36 (2018): 217–21. http://dx.doi.org/10.14419/ijet.v7i4.36.23748.

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A search for indicators reflecting resistance of fish to helminth infections passed by fish-eating birds has been carried out. A decrease in the concentration of lysozyme by 13.5 % and an increase in hemagglutinin by 7.7 % for the bighead carp (Hypophthalmichthys nobilis), 19.9 % and 7.4 % correspondingly for scaly carp (Cyprinus carpio) and 18.6 % and 11.4 %, respectively for white amur (Ctenopharyngodon idela) identify the fish at risk for the incidence of helminths of Trematoda class (Posthodiplostomum brevicaudatum and Diplostomum spathaceum) and Cestoidea class (Pseudophyllidea). The diff

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Setyadji, Bram, and Hety Hartaty. "Modelling the Diel Vertical Movement of Swordfish (Xiphias gladius Linnaeus, 1758) Based on Temperature and Depth Recorder Data." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 21, no. 1 (2016): 9. http://dx.doi.org/10.14710/ik.ijms.21.1.9-16.

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Understanding the vertical distribution of large pelagic fish, swordfish in particular, could improve our knowledge on its fisheries strategy, management and resource conservation. However the methods often require expensive tools and resources, which probably most scientists from the development countries couldn’t afford. Thus developing model on the diel vertical movement behavior of swordfish using number of hook between float (HBF) and complete-set temperature and depth recorder (TDR) data could be an alternative. In general context, capture depth distributions are a good indicator of the

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Greenstreet, Simon P. R. "Biodiversity of North Sea fish: why do the politicians care but marine scientists appear oblivious to this issue?" ICES Journal of Marine Science 65, no. 8 (2008): 1515–19. http://dx.doi.org/10.1093/icesjms/fsn102.

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Abstract Greenstreet, S. P. R. 2008. Biodiversity of North Sea fish: why do the politicians care but marine scientists appear oblivious to this issue? – ICES Journal of Marine Science, 65: 1515–1519. Political drivers underpinning the development of an Ecosystem Approach to Marine Management (EAMM) focus on conserving and restoring biodiversity. However, the Element of Ecological Quality for Fish Communities that emerged from the 2002 Bergen North Sea Ministerial Conference relates to “Changes in the proportion of large fish and hence the average weight and average maximum length of the fish c

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Waisertreiger, Irina, Katherine Popovich, Maya Block, Krista R. Anderson, and Jacqueline H. Barlow. "Visualizing locus-specific sister chromatid exchange reveals differential patterns of replication stress-induced fragile site breakage." Oncogene 39, no. 6 (2019): 1260–72. http://dx.doi.org/10.1038/s41388-019-1054-5.

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Abstract Chromosomal fragile sites are genomic loci sensitive to replication stress which accumulate high levels of DNA damage, and are frequently mutated in cancers. Fragile site damage is thought to arise from the aberrant repair of spontaneous replication stress, however successful fragile site repair cannot be calculated using existing techniques. Here, we report a new assay measuring recombination-mediated repair at endogenous genomic loci by combining a sister chromatid exchange (SCE) assay with fluorescent in situ hybridization (SCE-FISH). Using SCE-FISH, we find that endogenous and exo

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Englmaier, Gernot K., Daniel S. Hayes, Paul Meulenbroek, et al. "Longitudinal river zonation in the tropics: examples of fish and caddisflies from the endorheic Awash River, Ethiopia." Hydrobiologia 847, no. 19 (2020): 4063–90. http://dx.doi.org/10.1007/s10750-020-04400-0.

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Abstract Specific concepts of fluvial ecology are well studied in riverine ecosystems of the temperate zone but poorly investigated in the Afrotropical region. Hence, we examined the longitudinal zonation of fish and adult caddisfly (Trichoptera) assemblages in the endorheic Awash River (1,250 km in length), Ethiopia. We expected that species assemblages are structured along environmental gradients, reflecting the pattern of large-scale freshwater ecoregions. We applied multivariate statistical methods to test for differences in spatial species assemblage structure and identified characteristi

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ZENISEK, DAVID, and GARY MATTHEWS. "Calcium action potentials in retinal bipolar neurons." Visual Neuroscience 15, no. 1 (1998): 69–75. http://dx.doi.org/10.1017/s0952523898151064.

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Patch-clamp and calcium-indicator measurements were used to examine the electrical excitability of large-terminal bipolar neurons from goldfish retina. Large, transient increases in intracellular calcium occurred spontaneously in the synaptic terminal but not in the soma of bipolar neurons. Calcium transients were blocked by hyperpolarization, by external application of calcium-channel blockers, and by the neurotransmitters GABA and glutamate. These observations suggest that calcium action potentials are responsible for the spontaneous increases in intraterminal calcium, which was directly con

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ISAAC, VICTORIA J., MORGANA C. ALMEIDA, TOMMASO GIARRIZZO, et al. "Food consumption as an indicator of the conservation of natural resources in riverine communities of the Brazilian Amazon." Anais da Academia Brasileira de Ciências 87, no. 4 (2015): 2229–42. http://dx.doi.org/10.1590/0001-3765201520140250.

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ABSTRACT The present study analyzed and compared the daily consumption of foods of animal origin in eleven communities of the Lower Amazon, Trombetas and Purus Rivers, representing three different management systems and levels of conservation in the Brazilian Amazon. All food items of animal origin were weighed by at least 10% of the families in the study communities during a week in each period of the flood cycle between 2006 and 2008. Fish was the most important food, and was consumed during six days of the week, with an average rate of 169 kg.person-1.year-1. Game was second in importance,

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