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Journal articles on the topic 'Lotic ecosystems'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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1

Brandão, Heleno, Fábio Hideki Yamada, Gislayne de Melo Toledo, Edmir Daniel Carvalho, and Reinaldo José da Silva. "Monogeneans (Dactylogyridae) parasitizing gills ofSalminus hilarii from a Neotropical reservoir, Brazil." Revista Brasileira de Parasitologia Veterinária 22, no. 4 (December 2013): 579–87. http://dx.doi.org/10.1590/s1984-29612013000400020.

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With the aim of creating an inventory of the metazoan gill parasites of Salminus hilarii in the Taquari River, state of São Paulo, Brazil, five species of monogeneans (Anacanthorus contortus,A. bicuspidatus, Annulotrematoides parisellei, Jainus iocensis andTereancistrum arcuatus) are reported the first time for this host. A total of 28 fish were sampled quarterly between April 2011 and January 2012, with 10 hosts in a lentic ecosystem and 18 in a lotic ecosystem. Quantitative ecological descriptors (prevalence, intensity of infestation and abundance) were calculated for the purpose to comparing the two ecosystems sampled (lentic and lotic ecosystems). However, no quantitative difference between the lentic and lotic ecosystems was observed. The present study has made available a checklist for species of the genus Anacanthorus and their hosts and geographical distribution in the Neotropical region up to the present time.

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2

Avila-Perez, Humberto, Enrique J. Flores-Munguía, José L. Rosas-Acevedo, Iván Gallardo-Bernal, and Tania A. Ramirez-delReal. "Comparative Analysis of Water Quality Applying Statistic and Machine Learning Method: A Case Study in Coyuca Lagoon and Tecpan River, Mexico." Water 15, no. 4 (February 6, 2023): 640. http://dx.doi.org/10.3390/w15040640.

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The water quality monitoring of lotic and lentic ecosystems allows for informing the possible use in human activities and the consumption of the vital liquid. This work measures the biochemical parameters in Coyuca Lagoon and Tecpan River, localized in Guerrero, Mexico. A comparative statistical analysis of six physicochemical factors in lentic and lotic ecosystems was carried out, finding individual pH values slightly higher for the lagoon ecosystem and lower for the river. For electrical conductivity, we find river sites with parameters lower than 500 µS/cm ideal for human use and consumption. On the contrary, in sites of the lagoon system, the conductivity was higher. As for the total hardness of the river, the values are within the Mexican standard; however, for the lagoon ecosystem, the water has a higher amount of calcium and magnesium salts and is not recommended for human consumption. For chlorides, the lagoon system exceeds the limits of regulations for human consumption; otherwise, it happens with the lotic system. The values of total alkalinity and total dissolved solids are higher for the lentic system than for the lotic one. Finally, the machine learning method shows the importance of measuring other parameters to determine the water quality, especially the salinity and calcium hardness.

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3

Branco, Luis Henrique Z., Orlando Necchi Jr., and Ciro Cesar Z. Branco. "Cyanophyceae from lotic ecosystems of São Paulo State, southeastern Brazil." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 94 (September 16, 1999): 63–87. http://dx.doi.org/10.1127/algol_stud/94/1999/63.

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4

Al-Saeedi, Hind Mahdi Salih, and Ibrahim M. A. Al Salman. "Biodiversity of Phytoplankton in Two Aquatic Ecosystems (LOTIC and LENTIC) During the Autumn Season." Pakistan Journal of Medical and Health Sciences 16, no. 6 (June 29, 2022): 379–85. http://dx.doi.org/10.53350/pjmhs22166379.

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Phytoplankton have been studied in quantity and quality in two aquatic ecosystems represented by two sites in the lake of Baghdad Island tourist as a lotic ecosystem and two sites of the Tigris River, one north of the lake and the other south as an lentic ecosystem, and the study was conducted in the autumn of 2021, where 69 species were diagnosed in the environment of the two ecosystems studied, distributed to 14 species of Chlorophyta, 21 species of Cyanobacteria, 29 species of diatom (1 belongs to Centrales order and 28 to Pennales order), 3 species of Euglenophyta and two species of the Chrysophyta division. The dominance of algae belonging to the genus of; Pinnularia, Synedra, Ankistrodesmus, Chroococcus, Oscillatoria, Synechacoccns, Navicula and Nitzschia during the autumn period and at all Sites. Some species showed high density such as: Ankistrodesmus falcatus, Chroococcus disperses, Chroococcus minor, Oscillatoria limnetica, Synechacoccns aeruginosus, Navicula sp. and Nitzschia longissima. The quantitative results showed that the mean density of the phytoplankton in the lotic aquatic ecosystem exceeded that the lentic aquatic ecosystem when recorded (378.68 × 103 cells/L and 334.21×103 cells/L) respectively. Air temperature values were recorded (20-36) °C and while water temperature ranged between (16-25.5) °C, NTU (5.8-19.5) 4), TDS (421-620) mg/L, as well as EC (1027-1380) μS/cm, whereas pH value was (7.4-8.4), (DO) (6.4-8.6), and BOD (204-305). Also, by measuring the values of the essential macronutrients for algae growth, it was found that the values of concentrations NO3 (0.468-0.986), PO4- (0.038-0.061) SO4- (175.6-293.37), and SO3 (3.9-6.9) mg/L respectively. Keywords: Phytoplankton, Biodiversity, Lotic Ecosystem, Lentic Ecosystem, Physiochemical factors.

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5

Ward, J. V. "The Four-Dimensional Nature of Lotic Ecosystems." Journal of the North American Benthological Society 8, no. 1 (March 1989): 2–8. http://dx.doi.org/10.2307/1467397.

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6

Hamilton, Steven J., and Vince P. Palace. "Assessment of Selenium Effects in Lotic Ecosystems." Ecotoxicology and Environmental Safety 50, no. 3 (November 2001): 161–66. http://dx.doi.org/10.1006/eesa.2001.2111.

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7

Bhattacharyya, Sohini, Ajay Kumar Harit, Manoj Singh, Urvashi Sharma, and Chaitramayee Pradhan. "Occurrence of Antibiotic Resistance in Lotic Ecosystems." SCIENTIFIC TEMPER 13, no. 2 (December 31, 2022): 421–24. http://dx.doi.org/10.58414/scientifictemper.13.2.2022.421-424.

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8

Necchi, Orlando Jr, and João C. L. Moreira. "Longitudinal distribution of macroalgae in two tropical lotic ecosystems from southeastern Brazil." Archiv für Hydrobiologie 135, no. 1 (October 23, 1995): 113–28. http://dx.doi.org/10.1127/archiv-hydrobiol/135/1995/113.

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9

Rojano, Fernando, David Huber, Ifeoma Ugwuanyi, Vadesse Noundou, Andrielle Kemajou-Tchamba, and Jesus Chavarria-Palma. "Net Ecosystem Production of a River Relying on Hydrology, Hydrodynamics and Water Quality Monitoring Stations." Water 12, no. 3 (March 12, 2020): 783. http://dx.doi.org/10.3390/w12030783.

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Flow and water quality of rivers are highly dynamic. Water quantity and quality are subjected to simultaneous physical, chemical and biological processes making it difficult to accurately assess lotic ecosystems. Our study investigated net ecosystem production (NEP) relying on high-frequency data of hydrology, hydrodynamics and water quality. The Kanawha River, West Virginia was investigated along 52.8 km to estimate NEP. Water quality data were collected along the river using three distributed multiprobe sondes that measured water temperature, dissolved oxygen, dissolved oxygen saturation, specific conductance, turbidity and ORP hourly for 71 days. Flows along the river were predicted by means of the hydrologic and hydrodynamic models in Hydrologic Simulation Program in Fortran (HSPF). It was found that urban local inflows were correlated with NEP. However, under hypoxic conditions, local inflows were correlated with specific conductance. Thus, our approach represents an effort for the systematic integration of data derived from models and field measurements with the aim of providing an improved assessment of lotic ecosystems.

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10

Winemiller, Kirk O., Alexander S. Flecker, and David J. Hoeinghaus. "Patch dynamics and environmental heterogeneity in lotic ecosystems." Journal of the North American Benthological Society 29, no. 1 (March 2010): 84–99. http://dx.doi.org/10.1899/08-048.1.

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11

Vieira, Jair, and Orlando Necchi. "Photosynthetic characteristics of charophytes from tropical lotic ecosystems." Phycological Research 51, no. 1 (March 2003): 51–60. http://dx.doi.org/10.1111/j.1440-1835.2003.tb00170.x.

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12

Bernot, Melody J., and Walter K. Dodds. "Nitrogen Retention, Removal, and Saturation in Lotic Ecosystems." Ecosystems 8, no. 4 (June 2005): 442–53. http://dx.doi.org/10.1007/s10021-003-0143-y.

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13

Friberg, Nikolai. "Impacts and indicators of change in lotic ecosystems." Wiley Interdisciplinary Reviews: Water 1, no. 6 (August 20, 2014): 513–31. http://dx.doi.org/10.1002/wat2.1040.

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14

Bere, T., and JG Tundisi. "Biological monitoring of lotic ecosystems: the role of diatoms." Brazilian Journal of Biology 70, no. 3 (March 19, 2010): 493–502. http://dx.doi.org/10.1590/s1519-69842010005000009.

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Increasing anthropogenic influence on lotic environments as a result of civilisation has captured public interest because of the consequent problems associated with deterioration of water quality. Various biological monitoring methods that provide a direct measure of ecological integrity by using the response of biota to environmental changes have been developed to monitor the ecological status of lotic environments. Diatoms have been used extensively in this regard and this review attempts to summarise the basic concepts associated with biological monitoring using benthic diatoms. Where possible, examples from work carried out in Brazil are used.

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15

P S, Dr Anju, and Dr Jaya D S. "Impacts of Clay Mining Activities on Aquatic Ecosystems: A Critical Review." International Journal of Engineering and Advanced Technology 11, no. 4 (April 30, 2022): 128–34. http://dx.doi.org/10.35940/ijeat.d3495.0411422.

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The unconsolidated earth surface is a rich source of minerals, of which clay is one of the richest natural minerals, having various natural and anthropogenic properties. Natural clay is widely available as a cheaper resource, which is non toxic to ecosystems and has the property of preserving ground water and aquifers. At the same time, the ubiquitous and widespread occurrence of clay will have the property to control toxic materials. The uncontrolled exploitation or mining of clay minerals will affect the aquatic ecosystem's sustainability in many ways. Water quality is very essential for the healthy environment and human life, whereas unpredictable conditions like flooding, drought, groundwater loss, loss of biodiversity, and health impacts on the surrounding inhabitants are some of the signs of ecosystem loss. The unwanted mined clay is deposited into the surrounding area of the mining environment, resulting in top soil, ground water, and surface water pollution. The review paper describes the pollution aspects of the aquatic ecosystem with special emphasis on ground water, aquifers, fresh water (lotic and lentic), sediment, and marine ecology and hydrology.

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16

Petruzziello, Antonio, Luca Bonacina, Francesca Marazzi, Silvia Zaupa, Valeria Mezzanotte, and Riccardo Fornaroli. "Effects of high-altitude reservoirs on the structure and function of lotic ecosystems: a case study in Italy." Hydrobiologia 848, no. 7 (February 3, 2021): 1455–74. http://dx.doi.org/10.1007/s10750-020-04510-9.

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AbstractAlpine and pre-alpine lotic ecosystems are often remote and not affected by humans, which makes them some of the world’s most pristine ecosystems. However, their status is often altered by the presence of reservoirs that are built to fulfill agricultural needs and hydroelectric demands. These reservoirs also disrupt stream continuity and alter the magnitude, timing, and frequency of natural flows. The present work assessed how high-altitude reservoirs affect the riverine ecosystems focusing on the following: (i) the macroinvertebrate communities, (ii) the breakdown of organic matter, and (iii) the thermal regime. Stretches altered by high-altitude reservoirs had the best conditions for most macroinvertebrate families due to a more stable flow conditions. The breakdown rate of coarse particulate organic matter was not affected by high-altitude reservoirs but its availability was higher in altered compared to pristine stretches. The presence of hydroelectric power plants modified the stream thermal regime. Reservoirs mitigate the atmospheric influence on stream water temperature while run of the river plants strengthen it in the diverted stretches. Where both these alterations were present, the thermal regime of the stream was more similar to the natural ones compared to stretches subjected to only one kind of alteration. This research showed how river impoundment alters the structure of macroinvertebrate communities and the function of the downstream lotic ecosystems and can provide the basis to correctly guide management strategies for lotic ecosystems affected by hydrological alterations.

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17

Malmqvist, Björn, and Simon Rundle. "Threats to the running water ecosystems of the world." Environmental Conservation 29, no. 2 (June 2002): 134–53. http://dx.doi.org/10.1017/s0376892902000097.

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Running waters are perhaps the most impacted ecosystem on the planet as they have been the focus for human settlement and are heavily exploited for water supplies, irrigation, electricity generation, and waste disposal. Lotic systems also have an intimate contact with their catchments and so land-use alterations affect them directly. Here long-term trends in the factors that currently impact running waters are reviewed with the aim of predicting what the main threats to rivers will be in the year 2025. The main ultimate factors forcing change in running waters (ecosystem destruction, physical habitat and water chemistry alteration, and the direct addition or removal of species) stem from proximate influences from urbanization, industry, land-use change and water-course alterations. Any one river is likely to be subjected to several types of impact, and the management of impacts on lotic systems is complicated by numerous links between different forms of anthropogenic effect. Long-term trends for different impacts vary. Concentrations of chemical pollutants such as toxins and nutrients have increased in rivers in developed countries over the past century, with recent reductions for some pollutants (e.g. metals, organic toxicants, acidification), and continued increases in others (e.g. nutrients); there are no long-term chemical data for developing countries. Dam construction increased rapidly during the twentieth century, peaking in the 1970s, and the number of reservoirs has stabilized since this time, whereas the transfer of exotic species between lotic systems continues to increase. Hence, there have been some success stories in the attempts to reduce the impacts from anthropogenic impacts in developed nations. Improvements in the pH status of running waters should continue with lower sulphurous emissions, although emissions of nitrous oxides are set to continue under current legislation and will continue to contribute to acidification and nutrient loadings. Climate change also will impact running waters through alterations in hydrology and thermal regimes, although precise predictions are problematic; effects are likely to vary between regions and to operate alongside rather than override those from other impacts. Effects from climate change may be more extreme over longer time scales (>50 years). The overriding pressure on running water ecosystems up to 2025 will stem from the predicted increase in the human population, with concomitant increases in urban development, industry, agricultural activities and water abstraction, diversion and damming. Future degradation could be substantial and rapid (c. 10 years) and will be concentrated in those areas of the world where resources for conservation are most limited and knowledge of lotic ecosystems most incomplete; damage will centre on lowland rivers, which are also relatively poorly studied. Changes in management practices and public awareness do appear to be benefiting running water ecosystems in developed countries, and could underpin conservation strategies in developing countries if they were implemented in a relevant way.

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18

Steinman, Alan D., Patrick J. Mulholland, Anthony V. Palumbo, Terry F. Flum, and Donald L. DeAngelis. "Resilience of Lotic Ecosystems to a Light-Elimination Disturbance." Ecology 72, no. 4 (August 1991): 1299–313. http://dx.doi.org/10.2307/1941103.

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19

Pacioglu, Octavian, Alina Satmari, Milca Petrovici, Mălina Pîrvu, Mirela Cîmpean, Karina Paula Battes, Sandra Florina Lele, Angela Curtean-Bănăduc, and Lucian Pârvulescu. "Flash-Floods Influence Macroinvertebrate Communities Distribution in Lotic Ecosystems." Transylvanian Review of Systematical and Ecological Research 21, no. 1 (April 1, 2019): 45–56. http://dx.doi.org/10.2478/trser-2019-0004.

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Abstract Stream dwelling invertebrate populations are facing an ample array of stressors including the habitat imbalance caused by important floods. In this research we used a novel way to estimate the impact of floods upon the substrate, by utilising a remote variable named “flash-flood potential” (FFP), which accounts for the site slope and the average slope of the upstream catchment. The results showed that certain groups are sensitive to the influence of the FFP whereas other are not. We propose this remote variable as a surrogate for assessing stress imposed by floods and sediment scouring for lotic macroinvertebrates.

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20

Fisher, Stuart G. "Recovery processes in lotic ecosystems: Limits of successional theory." Environmental Management 14, no. 5 (September 1990): 725–36. http://dx.doi.org/10.1007/bf02394721.

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21

Kókai, Zsuzsanna, István Bácsi, Péter Török, Krisztina Buczkó, Enikő T-Krasznai, Csaba Balogh, Béla Tóthmérész, and Viktória Béres. "Halophilic diatom taxa are sensitive indicators of even short term changes in lowland lotic systems." Acta Botanica Croatica 74, no. 2 (October 1, 2015): 287–302. http://dx.doi.org/10.1515/botcro-2015-0025.

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Abstract The occurrence and spread of halophilic diatom taxa in freshwater lotic ecosystems are influenced both by natural processes and anthropogenic pollution. Diatom assemblages were regularly monitored in lowland lotic systems in Hungary (Central Europe) during the unusually dry year of 2012. Highly pronounced changes in diatom composition were observed from spring to autumn. Halophilic taxa (especially Nitzschia sensu lato species) appeared in the dry autumn. In addition, the total relative abundances of halophilic species also increased up to autumn. Abundance of Nitzschia cf. lorenziana and Nitzschia tryblionella showed a positive correlation with chloride and phosphate concentration, while that of other taxa like Tryblionella apiculata or Tryblionella calida showed a positive correlation with the concentration of nitrate. Our findings clearly demonstrated that these halophilic and mesohalophilic diatom taxa were sensitive indicators of even short-term changes in lowland lotic ecosystems, such as the increasing salt concentration from spring to autumn caused by the lack of rainfall and/or environmental loads.

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22

Filimon, Marioara Nicoleta, Patricia Drăguşin, Cristina Drăguşin, Roxana Popescu, Maria Mugur, Claudia Ratis, and Sorin Voia. "Fisheries Management Influence on Some Ecophysiological Groups of Bacteria in Lotic Ecosystems Of the Cefa Nature Park (Romania)." Transylvanian Review of Systematical and Ecological Research 15, no. 1 (June 1, 2013): 73–80. http://dx.doi.org/10.2478/trser-2013-0007.

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ABSTRACT The nutrient circuit in aquatic ecosystems may seem simple, but the truth is that nutrient biochemical circuits are rather complex. Circuits are established by a series of interconnected biological, chemical and physical processes. Human activities lead to degradation of wet fields. Water quality and quantity have been changed, especially the quantity of polluting substances. Bacteriological studies in lotic ecosystems from Cefa Nature Park were carried out to establish four ecophysiologic microorganism groups: nitrogen-fixing bacteria, amonifying bacteria, nitrifying bacteria and denitrifying bacteria. Recorded values differ greatly from one species to the other according to sample points and season. Higher values in autumn are due to an increased intake of organic matter at the end of the vegetation period. Decomposition processes are intensified because of a growing number of microorganisms. Fishery management influences qualitative and quantitative variations in the microorganism communities of the lotic ecosystems in Cefa Natural Park.

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23

Tokatli, Cem, and Yasin Baştatli. "ASSESSMENT OF TOXIC METALS IN SEDIMENTS OF MERIÇ, TUNCA AND ERGENE RIVERS BY USING BIOLOGICAL AND ECOLOGICAL RISK INDICES." CBU International Conference Proceedings 4 (September 26, 2016): 785–90. http://dx.doi.org/10.12955/cbup.v4.851.

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The Meriç River, the longest river of the Balkans, is the most important aquatic ecosystem within the Thrace Region of Turkey, along with its main tributaries, the Tunca and Ergene Rivers. In this study, the sediment quality of Meriç, Tunca, and Ergene Rivers was evaluated by using the Potential Ecological Risk Index (RI) and the Biological Risk Index (mERM-Q), both widely used methods in sediment quality assessment studies, to assess the ecological and biological risks of heavy metals within the river ecosystems. According to the results of the Biological Risk Index, nickel and chromium displayed the highest risk factors, and in terms of the Potential Ecological Risk Index, cadmium yielded the highest risk factor across all the investigated lotic ecosystems.

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24

Clements, William H., Nicole K. M. Vieira, and Derek L. Sonderegger. "Use of ecological thresholds to assess recovery in lotic ecosystems." Journal of the North American Benthological Society 29, no. 3 (September 2010): 1017–23. http://dx.doi.org/10.1899/09-133.1.

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25

Tosetto, Everton Giachini, Maristela Cavicchioli Makrakis, and Sergio Makrakis. "SPAWNING HABITAT OF MIGRATORY FISHES IN LOTIC ECOSYSTEMS: ABIOTIC CHARACTERIZATION." Oecologia Australis 20, no. 01 (April 2016): 18–36. http://dx.doi.org/10.4257/oeco.2016.2001.02.

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26

Minshall, G. Wayne, Christopher T. Robinson, and Deron E. Lawrence. "Postfire responses of lotic ecosystems in Yellowstone National Park, U.S.A." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 11 (November 1, 1997): 2509–25. http://dx.doi.org/10.1139/f97-160.

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27

Farcaş, Adina Nicoleta, Angela Curtean-Bănăduc, and Claudiu Vasile Kifor. "ECOLOGICAL ASSESSMENT AS A FIRST STEP IN THE EVALUATION OF ECOSYSTEM SERVICES PROVIDED BY LOTIC ECOSYSTEMS." Management of Sustainable Development 5, no. 2 (December 1, 2013): 9–12. http://dx.doi.org/10.2478/msd-2013-0009.

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ABSTRACT The ecosystems offer to the socio-economic system a series of goods and services derived from their processes and biodiversity. Ecosystem services offered by a river are at their highest potential when the river status is close to the natural one. Once the river is affected by human impact due to resources exploitation, hydro technical works, water abstraction or improper land use, the ecological status declines and the ecosystem services become scarce. This is why an ecological assessment is necessary in order to establish the connection between the ecosystem services and the human impact. In this paper, the ecological assessment of Timiș River was done, allowing the classification of the river in four sectors with different ecological statuses, associated with the various human impacts that differently affect the quality of the water, the riverbed and the flooding area.

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28

Sutton, Isaac A., and Nicholas E. Jones. "Measures of fish community size structure as indicators for stream monitoring programs." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 5 (May 2020): 824–35. http://dx.doi.org/10.1139/cjfas-2019-0268.

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Characterization of community size structure presents an alternative to taxa-based approaches commonly applied to assess lotic ecosystem health. However, few studies have explored the relationship between community size structure and land use stresses in lotic systems. In the present study, we investigated use of metrics including mean body size, body size range, size diversity, size evenness, and the size spectrum slope as indicators of land use disturbance in streams. We also explored the effects of sampling intensity (one- versus three-pass electrofishing) on these size-based variables. We found significant decreases in size range and diversity with increased urban cover. In contrast, mean body size, size evenness, and size spectrum slopes were unrelated to variation in land use. Fewer than 25% of samples collected conformed to the power law model predicted for size distributions in aquatic ecosystems. However, increased departure from the power law form was related to agricultural cover and the use of three-pass electrofishing.

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Ferreira, Marco, João Gago, and Filipe Ribeiro. "Diet of European Catfish in a Newly Invaded Region." Fishes 4, no. 4 (December 8, 2019): 58. http://dx.doi.org/10.3390/fishes4040058.

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Biological invasions are considered to be one of the leading causes of biodiversity loss worldwide. Freshwater ecosystems are amongst the most biodiverse, containing about 50% of the world’s known fish species but, ironically, are the most invaded ecosystems. In Portuguese freshwaters, there are currently 20 identified non-native fishes, arriving at an unprecedented rate of a new species every two years. A recent non-native is the European catfish Silurus glanis, a top predator native to Central and Eastern Europe, that arrived at the Lower Tagus (Portugal) circa 2006. This study compares the dietary habits of this top predator in two different habitats of the Lower Tagus in order to evaluate its potential impact. The stomach contents of 96 individuals were analyzed, 61 from the lotic environment and 35 from the lentic systems. A total of 66 stomachs contained prey items, 38 from the lotic and 28 from the lentic. Diet varied considerably between habitats, with shrimp and crayfish being the most abundant prey items in the lentic systems and shrimp and fish the most abundant prey items in the lotic section. Tendency to piscivory was observed in large-sized individuals. Overall, the findings in this study provide the first evidence of the potential impacts of European catfish through predation on the fish communities.

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30

Mochek, A. D., and D. S. Pavlov. "Comparative Analysis of Fish Distribution in Lentic and Lotic Ecosystems (Review)." Inland Water Biology 14, no. 2 (March 2021): 196–204. http://dx.doi.org/10.1134/s1995082921020103.

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31

KOBA, Keisuke, and Akiko MAKABE. "Studies on Nitrogen Dynamics in Lotic Ecosystems Using Stable Isotope Techniques." JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 19, no. 4 (2006): 293–301. http://dx.doi.org/10.3178/jjshwr.19.293.

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32

Bae, Mi-Jung, Fengqing Li, Piet Verdonschot, and Young-Seuk Park. "Characterization of Ecological Exergy Based on Benthic Macroinvertebrates in Lotic Ecosystems." Entropy 15, no. 12 (June 7, 2013): 2319–39. http://dx.doi.org/10.3390/e15062319.

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33

Zanini Branco, Ciro Cesar, Orlando Necchi Júnior, and Luis Henrique Zanini Branco. "Taxonomy and ecological distribution of Chaetophoraceae (Chaetophorales, Chlorophyta) in lotic ecosystems from São Paulo State, southeastern Brazil." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 106 (August 19, 2002): 43–75. http://dx.doi.org/10.1127/algol_stud/106/2002/43.

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34

Juen, Leandro, Leandro Schlemmer Brasil, Frederico Falcão Salles, Joana Darc Batista, and Helena Soares Ramos Cabette. "Mayfly assemblage structure of the Pantanal Mortes–Araguaia flood plain." Marine and Freshwater Research 68, no. 11 (2017): 2156. http://dx.doi.org/10.1071/mf17013.

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The diversity of lakes, rivers and streams of flood plain sustains great taxonomic and functional diversity. The Bananal flood plain is located mainly in the State of Mato Grosso, in the southern region of the Cerrado Biome and north of the Cerrado–Amazonia transition zone, two very diverse ecosystems. In the present study, to test the hypothesis that composition, richness and functional groups would differ between regions (south and north), as well as between environments (lentic and lotic), always being greater in the northern area and in lotic environments, immature Ephemeroptera individuals were collected from 12 aquatic environments, 6 streams and 6 lakes, in the northern and southern regions of the plains. Composition differed only between regions; the richness of genera and the number of functional feeding groups was higher in the northern region, and did not differ between environments. The greater diversity in the northern region may be because of its location in the ecotone of two highly diverse ecosystems, whereas the similarity between the lentic and lotic environments may be because of the homogenisation temporarily caused by floods during the flood period, increasing fluvial connectivity. Knowledge of the diversity patterns in these inhospitable regions spatially minimises knowledge gaps and provides empirical evidence of the importance of areas such as the Cerrado–Amazon transition for conservation, as shown in the present study.

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35

Padmanabha, B. "Comparative study on the hydrographical status in the lentic and lotic ecosystems." Global Journal of Ecology 2, no. 1 (October 23, 2017): 015–18. http://dx.doi.org/10.17352/gje.000005.

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Staicu, Gabriela. "The significance of macrophyte—phytophilous fauna from lotic and lentic ecosystems (Romania)." SIL Proceedings, 1922-2010 27, no. 7 (September 2001): 3852–55. http://dx.doi.org/10.1080/03680770.1998.11901706.

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Kurniawan, A., Sukandar, C. Satriya, and Guntur. "Biofilm as a bioindicator of Cr VI pollution in the Lotic Ecosystems." IOP Conference Series: Earth and Environmental Science 137 (April 2018): 012062. http://dx.doi.org/10.1088/1755-1315/137/1/012062.

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Matlock, Marty D., Monty E. Matlock, Daniel E. Storm, Michael D. Smolen, and William J. Henley. "LIMITING NUTRIENT DETERMINATION IN LOTIC ECOSYSTEMS USING A QUANTITATIVE NUTRIENT ENRICHMENT PERIPHYTOMETER." Journal of the American Water Resources Association 34, no. 5 (October 1998): 1141–47. http://dx.doi.org/10.1111/j.1752-1688.1998.tb04160.x.

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39

McClain, M. E., and J. E. Richey. "Regional-scale linkages of terrestrial and lotic ecosystems in the Amazon basin: a conceptual model for organic matter." River Systems 10, no. 1-4 (September 18, 1996): 111–25. http://dx.doi.org/10.1127/lr/10/1996/111.

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40

An, Kwang-Guk, Ji-Woong Choi, and Yeong-Jun Lee. "Modifications of ecological trophic structures on chemical gradients in lotic ecosystems and their relations to stream ecosystem health." Animal Cells and Systems 17, no. 1 (February 2013): 53–62. http://dx.doi.org/10.1080/19768354.2013.768295.

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41

C. Nevill, Jon, Peter J. Hancock, Brad R. Murray, Winston F. Ponder, William F. Humphreys, Megan L. Phillips, and Philip K. Groom. "Groundwater-dependent ecosystems and the dangers of groundwater overdraft: a review and an Australian perspective." Pacific Conservation Biology 16, no. 3 (2010): 187. http://dx.doi.org/10.1071/pc100187.

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Abstract:

In many parts of the world, access to groundwater is needed for domestic, agricultural and industrial uses, and global groundwater exploitation continues to increase. The significance of groundwater in maintaining the health of rivers, streams, wetlands and associated vegetation is often underestimated or ignored, resulting in a lack of scrutiny of groundwater policy and management. It is essential that management of groundwater resources considers the needs of natural ecosystems, including subterranean. We review the limited Australian literature on the ecological impacts of groundwater overdraft and place Australian information within an international context, focusing on lentic, lotic, stygobitic and hyporheic communities as well as riparian and phreatophytic vegetation, and some coastal marine ecosystems. Groundwater overdraft, defined as abstracting groundwater at a rate which prejudices ecosystem or anthropocentric values, can substantially impact natural communities which depend, exclusively or seasonally, on groundwater. Overdraft damage is often underestimated, is sometimes irreversible, and may occur over time scales at variance to those used by water management agencies in modelling, planning and regulation. Given the dangers of groundwater overdraft, we discuss policy implications in the light of the precautionary principle, and make recommendations aimed at promoting the conservation of groundwater-dependent ecosystems within a sustainable use context.

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Strona, Giovanni, Simone Fattorini, Barbara Fiasca, Tiziana Di Lorenzo, Mattia Di Cicco, Walter Lorenzetti, Francesco Boccacci, and Diana M. P. Galassi. "AQUALIFE Software: A New Tool for a Standardized Ecological Assessment of Groundwater Dependent Ecosystems." Water 11, no. 12 (December 6, 2019): 2574. http://dx.doi.org/10.3390/w11122574.

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We introduce a suite of software tools aimed at investigating multiple bio-ecological facets of aquatic Groundwater Dependent Ecosystems (GDEs). The suite focuses on: (1) threats posed by pollutants to GDE invertebrates (Ecological Risk, ER); (2) threats posed by hydrological and hydromorphological alterations on the subsurface zone of lotic systems and groundwater-fed springs (Hydrological-Hydromorphological Risk, HHR); and (3) the conservation priority of GDE communities (Groundwater Biodiversity Concern index, GBC). The ER is assessed by comparing tolerance limits of invertebrate species to specific pollutants with the maximum observed concentration of the same pollutants at the target site(s). Comparison is based on an original, comprehensive dataset including the most updated information on tolerance to 116 pollutants for 474 freshwater invertebrate species. The HHR is assessed by accounting for the main direct and indirect effects on both the hyporheic zone of lotic systems and groundwater-fed springs, and by scoring each impact according to the potential effect on subsurface invertebrates. Finally, the GBC index is computed on the basis of the taxonomical composition of a target community, and allows the evaluation of its conservation priority in comparison to others.

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Dirisu, Abdul-Rahman, John Ovie Olomukoro, and Ifeanyi Maxwell Ezenwa. "Physico-chemical trends in the sediments of Agbede Wetlands, Nigeria." Materials and Geoenvironment 64, no. 2 (July 1, 2017): 111–26. http://dx.doi.org/10.1515/rmzmag-2017-0009.

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AbstractThis study assessed the physico-chemical status of sediments in the Agbede Wetlands with the aim to create a reference archive for the Edo North catchment and to further identify the characteristics mostly influenced by the natural and anthropogenic activities going on at the watershed. Nutrients, zinc, nickel and lead were identified to be mostly of anthropogenic origin, while alkali metals and alkaline earth metals were from both anthropogenic and natural sources. The clustering of stations 1 and 4 indicates that the sediment quality in the lentic systems was not completely excluded from the lotic system, suggesting that principal component analysis (PCA) and cluster analysis (CA) techniques are invaluable tools for identifying factors influencing the sediment quality. The mean values of the particle size distribution were in the following order across the ecosystems: sand (61.86–80.53%) > silt (9.75–30.34%) > clay (7.83–13.89%). The contamination of the water bodies was primarily derived from agricultural run-offs and through geochemical weathering of the top soils. Therefore, our analysis indicates that the concentrations of cations, anions and nutrients in the sediments of the lotic and lentic ecosystems in Agbede Wetlands are not at an alarming level.

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Cortez, Daniela P., Ivor O. Growns, Simon M. Mitrovic, and Richard P. Lim. "Effects of a gradient in river regulation on the longitudinal trends in water quality and benthic algal and macroinvertebrate assemblages in the Hunter River, Australia." Marine and Freshwater Research 63, no. 6 (2012): 494. http://dx.doi.org/10.1071/mf11210.

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River regulation impacts lotic ecosystem processes; however, the effect of a gradient of regulation on these attributes has rarely been studied. This study examined the effects of a river regulation gradient on longitudinal trends in water quality and benthic algal and macroinvertebrate assemblages in three tributaries of the Hunter River, New South Wales, Australia. Longitudinal patterns were expected to differ across rivers, with recovery being proportional to its regulation gradient. Significant differences in longitudinal trends were tested using permutational multivariate analysis of variance (PERMANOVA) through exploration of the river by distance from source interaction. Multi-dimensional scaling (MDS) ordination plots identified sites responsible for any significant interaction observed. Similarity percentage analysis (SIMPER) analyses identified variables/taxa responsible for differences at sites below dams. BEST analyses identified environmental variables best explaining biological assemblage patterns. Significant differences in longitudinal trends were observed for all attributes. Increases in the regulation gradient most affected macroinvertebrate assemblages, followed by water quality and benthic algal assemblages respectively. Downstream recovery was absent in the heavily regulated river at its most downstream site, whereas recovery was observed on corresponding sites of the moderately regulated river. The study suggests that a gradient in river regulation increases the magnitude of disruption of lotic ecosystems, with recovery dependent on this gradient.

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Necchi Júnior, Orlando, Daniel Nunes Spezamiglio, Ciro Cesar Zanini Branco, and Luis Henrique Zanini Branco. "Taxonomy and ecological distribution of the genus Microspora (Microsporaceae, Chlorophyta) in lotic ecosystems of São Paulo State, southeastern Brazil." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 105 (June 24, 2002): 39–50. http://dx.doi.org/10.1127/algol_stud/105/2002/39.

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CIOCĂNEA, Cristiana Maria, Petru Ciprian CORPADE, Diana Andreea ONOSE, Gabriel Ovidiu VÂNĂU, Cristian MALOȘ, Milca PETROVICI, Carmen GHEORGHE, Silvia DEDU, Nicolae MANTA, and Róbert Eugen SZÉP. "THE ASSESSMENT OF LOTIC ECOSYSTEMS DEGRADATION USING MULTI-CRITERIA ANALYSIS AND GIS TECHNIQUES." Carpathian Journal of Earth and Environmental Sciences 14, no. 2 (2019): 255–68. http://dx.doi.org/10.26471/cjees/2019/014/077.

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Steinman, Alan D., Patrick J. Mulholland, Anthony V. Palumbo, Terry F. Flum, Jerry W. Elwood, and Donald L. DeAngelis. "Resistance of Lotic Ecosystems to a Light Elimination Disturbance: A Laboratory Stream Study." Oikos 58, no. 1 (May 1990): 80. http://dx.doi.org/10.2307/3565363.

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Gratton, Claudio, and M. Jake Vander Zanden. "Flux of aquatic insect productivity to land: comparison of lentic and lotic ecosystems." Ecology 90, no. 10 (October 2009): 2689–99. http://dx.doi.org/10.1890/08-1546.1.

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Bernot, Melody J., Jesse C. Becker, Jason Doll, and Thomas E. Lauer. "A national reconnaissance of trace organic compounds (TOCs) in United States lotic ecosystems." Science of The Total Environment 572 (December 2016): 422–33. http://dx.doi.org/10.1016/j.scitotenv.2016.08.060.

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Schleiter, Ingrid M., Dietrich Borchardt, Rüdiger Wagner, Thomas Dapper, Klaus-Dieter Schmidt, Hans-Heinrich Schmidt, and Heinrich Werner. "Modelling water quality, bioindication and population dynamics in lotic ecosystems using neural networks." Ecological Modelling 120, no. 2-3 (August 1999): 271–86. http://dx.doi.org/10.1016/s0304-3800(99)00108-8.

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