Journal articles: 'Aquatic'

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Cota-Sánchez, J. Hugo, and Kirsten Remarchuk. "An Inventory of the Aquatic and Subaquatic Plants in SASKWater Canals in Central Saskatchewan, Canada, Before and After the Application of the Herbicide Magnacide." Canadian Field-Naturalist 121, no. 2 (April 1, 2007): 164. http://dx.doi.org/10.22621/cfn.v121i2.441.

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This study focuses on the floristic composition of aquatic and semi-aquatic plants in the SASKWater canal system and their potential effect on irrigation systems. A checklist, evaluation, and synthesis of the species identified in this survey before and after the application of the herbicide Magnacide are provided, in addition to a brief discussion of the environmental effects of Magnacide. Thirty-three species in 26 genera within 20 plant families were identified. Two unidentified green algae were also collected. Common aquatics (i.e., green algae, Potamogeton spp., Alisma gramineum, A. plantago-aquatica, Ceratophyllum demersum, and Myriophyllum sibiricum) combined with debris from terrestrial plants were the primary contributors to blockage of irrigation drains. In general, the concentration of Magnacide used in this study had a minor effect on aquatic plant diversity, but effectively reduced plant density. However, the long-term effects of pesticides on the surrounding aquatic and terrestrial environments of the SASKWater irrigation system are unknown.

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Triyatmo, Bambang, and Namastra Probosunu. "BUDIDAYA TERPADU LELE DUMBO DENGAN TANAMAN ECENG GONDOK (Eichornia crassipes), KANGKUNG AIR (Ipomea aquatica) DAN KAPU-KAPU (Pistia stratiotes)." Jurnal Perikanan Universitas Gadjah Mada 4, no. 2 (August 28, 2002): 30. http://dx.doi.org/10.22146/jfs.8910.

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Catfish (Clarias gariepinus) was cultured with an aquatic plant, water hyacinth/eceng gondok (Eichornia crassipes), kangkung air (Ipomea aquatica) or kapu-kapu (Pistia stratiotes) in concrete ponds, for 3 months. Catfish cultured without aquatic plant was used as a control. The experiment was carried out to evaluate the survival rate as well as the growth of fish and aquatic plants.The survival rates of catfish cultured with I. aquatica, E. crassipes, and P. stratiotes were 76, 87, and 98%, respectively. In addition the survival rate of catfish cultured without any aquatic plant was 93%. The weight gain of catfish was 14,1-16,2 kg per pond. Whereas, the total weight gains of aquatic plant were 37,0, 27,7 and 7,7 kg per pond for E. crassipes, P. stratiotes, and I. aquatica,. Respectively. Dissolved oxygen, and the concentrations of NH3, NH4+ and PO43- in water with aquatic plants were higher than that of in water without aquatic plant. However, the concentration of CO2 was higher in water with aquatic plant.

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Monira Akter Ame, Lima Khatun, Sonia Khatun, Shamima Afroj Sumona, and AHM Mahbubur Rahman. "Investigation of aquatic vascular flora at Sadullapur Upazila of Gaibandha District, Bangladesh." GSC Biological and Pharmaceutical Sciences 21, no. 1 (October 30, 2022): 175–87. http://dx.doi.org/10.30574/gscbps.2022.21.1.0395.

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The present article focused on aquatic vascular plants diversity and their conservation status in natural and manmade wetlands habitats of Sadullapur Gaibandha. The study was conducted in between May 2019 to June 2020. A total of 52 aquatic plant species was recorded from Sadullapur Gaibandha in the present study. These are assigned to 35 genera under 30 families. For each species scientific name, local name, family, division, habit, habitat, use and status are provided. Ecological habitats analysis of aquatics shows variations. Among them, 37% species prefers to grow near the edge of water, 13% submerged, 11% as emergent, 11% as free floating and 28% as rooted floating in the aquatic habitat. In case of submerged species, they produce flowers on surface of the water. After pollination fruits remain under water up to maturation. Among them, 49% species used as fodder, 22% as medicinal, 4% as aquarium purpose, 9% as vegetable, 6% as edible, 10% as fish food in the study area. The population number of different aquatic plant species in habitats is not uniform. Overall analysis showed that 46% aquatic plant species in the study area found to be rare, 44% species found common and 10% species found as abundant. This status of aquatic plant species is very preliminary. Based on field observations and discussion with local people we are able to identify a good number of rare aquatic plants and also pointed some conservation measures for them in future. The investigation recorded a number of rare aquatic plant species from the study area. These are Trapa bispinosa (Singara), Nelumbo nucifera (Paddo), Nymphaea pubescens (Sada shapla), Oenanthe javanica (Panidhone), Nymphaea rubra (Lal shapla), Ottelia alismoides (Panikola), Enhydra fluctuans (Titidata) and Centrostachys aquatica (Thuash). Populations of such species in the wild are very rare because of local demand for the use. These species need to be cared for conservation.

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Conatser, Phillip, Martin Block, and Monica Lepore. "Aquatic Instructors’ Attitudes Toward Teaching Students with Disabilities." Adapted Physical Activity Quarterly 17, no. 2 (April 2000): 197–207. http://dx.doi.org/10.1123/apaq.17.2.197.

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The purpose was to examine attitudes of aquatic instructors (female, n = 59; male, n = 23) toward teaching swimming to students with mild to severe disabilities in an inclusive setting. Aquatic instructors from 28 states representing 75 cities across the U.S. participated in this study. Data were collected by mail with a modified version of Rizzo’s (1984) “Attitudes of Physical Educators Toward Teaching Handicapped Pupils” (renamed “Physical Educators’ Attitudes Toward Teaching Individuals with Disabilities - Swim”). A correlated t test showed that aquatic instructors were significantly more favorable toward teaching aquatics to students with mild disabilities than students with severe disabilities. Stepwise multiple regression analysis indicated that conducting an inclusive aquatic program was the best predictor of favorable attitudes toward including students with mild disabilities, while having more certifications in aquatics was the best predictor of favorable attitudes toward including students with severe disabilities in regular aquatic programs.

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Hazra, Harich And, Md Al Mujaddade Alfasane, Sharmin Kauser, Umme Fatema Shahjadee, and Moniruzzaman Khondker. "Biochemical Composition of Some Selected Aquatic Macrophytes Under Ex-Situ Conditions." Journal of the Asiatic Society of Bangladesh, Science 44, no. 1 (June 25, 2018): 53–60. http://dx.doi.org/10.3329/jasbs.v44i1.46545.

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Ex-situ culture studies of five selected aquatic macrophytes, namely Nymphaea nouchali Burm. f., Enhydra fluctuans Lour., Ipomoea aquatica Forsk., Hygroryza aristata (Retz.) Nees ex Wight & Arn. and Limnocharis flava (L.) Buch. were carried out. Comparing the biochemical composition of the above mentioned five aquatic macrophytes, on an average, Enhydra fluctuans was found to contain highest amounts of proteins (18.20%) and Ipomoea aquatica contains highest amounts of carbohydrate (58.60%). Lowest amounts of proteins (14.35%) were recorded in Hygroryza aristata and Limnocharis flava. On the other hand lowest amounts of carbohydrates were obtained in Nymphaea nouchali. Ipomoea aquatica contained highest amounts of energy (321.23 kcal) and lowest amount was observed in Limnocharis flava. The five aquatic plants were low in fiber, fat and also in ash. Among all the five aquatic macrophytes, highest values of calcium and phosphorus were found to be present in Limnocharis flava and iron was highest in Nymphaea nouchali. Lowest values of calcium and phosphorus were present in Ipomoea aquatica and lowest amount of iron was present in Limnochris flava. The present study demonstrated that, these five aquatic macrophytes are the important sources of carbohydrate, protein and minerals, which are suitable for incorporation in human diet and feed also. Asiat. Soc. Bangladesh, Sci. 44(1): 53-60, June 2018

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Grosse, MS, Susan J. "The role of the aquatic professional in the collaboration process." American Journal of Recreation Therapy 11, no. 3 (July 1, 2012): 7–16. http://dx.doi.org/10.5055/ajrt.2012.0022.

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The professional in therapeutic recreation has the potential to interact with a variety of other persons who are involved in the life of an individual with a disability. If that individual participates in an aquatic program, one of the persons with whom a therapeutic recreation staff member interacts is the professional in aquatics. To make that interaction as productive as possible, this article will explore several aspects of the interaction between professionals in therapeutic recreation and professionals in aquatics. There are two aspects to the role of the aquatic professional and that professional’s interaction with therapeutic recreation staff participating in the collaboration process when working with individuals with disabilities. The aquatic professionals’ first job is to obtain information that can possibly impact the aquatic participation of the individual with a disability. If the aquatic program is part of a broader therapeutic recreation program, the primary source for that information may be the therapeutic recreation staff. Second and more often overlooked, there is information that the aquatic professional can provide to other individuals, professionals in therapeutic recreation, and caregivers alike, who also interact with the person with a disability. Because of the unique nature of staffing and participation in aquatics, participation in the collaborative process may be difficult. This article explores the specific details of the interactions of the aquatic professional in the collaboration process. Barriers to collaboration are discussed and possible solutions are presented.

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Eakin, Annie C., and Terese M. Schurger. "Aquatics Benchmarks: Personnel, Programming, and Facilities." Recreational Sports Journal 31, no. 1 (April 2007): 61–68. http://dx.doi.org/10.1123/rsj.31.1.61.

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Among professionals a need exists to compile benchmark data in all areas for the field of aquatics. To address this need, the questionnaire “Benchmarking Study for Campus Aquatic Programs” was created and distributed to NIRSA members. The questionnaire focuses on gathering data related to aquatic staff, facilities, and programs. Results indicate that the job responsibilities and certifications for hourly staff positions are similar across institutions. Pay rates for each hourly position are not unanimous for each position, but rather have a range that was common. Programming questions address available pool time and how it is divided among various activities. This article presents the collected data to establish benchmark statistics for the aquatics community with the intent that it be used as guidelines or benchmarks by aquatic professionals and decision makers in the development of recreational aquatics programs.

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Arnold, Cathy M., and Robert A. Faulkner. "The Effect of Aquatic Exercise and Education on Lowering Fall Risk in Older Adults With Hip Osteoarthritis." Journal of Aging and Physical Activity 18, no. 3 (July 2010): 245–60. http://dx.doi.org/10.1123/japa.18.3.245.

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Objective:To evaluate the effect of aquatic exercise and education on fall risk factors in older adults with hip osteoarthritis (OA).Method:Seventy-nine adults, 65 years of age or older with hip OA and at least 1 fall risk factor, were randomly assigned to 1 of 3 groups: aquatics and education (AE; aquatic exercise twice a wk with once-a-wk group education), aquatics only (A; 2 wk aquatic exercise) and control (C; usual activity). Balance, falls efficacy, dual-task function, functional performance (chair stands), and walking performance were measured pre- and postintervention or control period.Results:There was a significant improvement in fall risk factors (full-factorial MANCOVA, baseline values as covariates;p= .038); AE improved in falls efficacy compared with C and in functional performance compared with A and C.Conclusion:The combination of aquatic exercise and education was effective in improving fall risk factors in older adults with arthritis.

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Cahya Putri Rifiah, Amelia, Sacinta Julia Astasagita, and Rony Irawanto. "PEMULIHAN PERAIRAN TERCEMAR MENGGUNAKAN MAKROFITA AIR." Prosiding SEMSINA 4, no. 01 (December 9, 2023): 314–21. http://dx.doi.org/10.36040/semsina.v4i01.8117.

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Indonesia possesses a potential and diverse biodiversity of plants that can be utilized as phytoremediation agents. One of the ecosystems frequently encountering pollution is the aquatic ecosystem. Therefore, this research is conducted to identify the diversity of aquatic macrophytes with the potential for water remediation efforts. The method employed is qualitative descriptive based on literature review. The literature study revealed 30 species of aquatic macrophytes, with 15 species prominently utilized for environmental remediation. Among these, Ipomea aquatica and Scirpus grossus emerge as the most widely employed aquatic macrophytes.

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Singh, Sangeeta. "Insights in Medicinal Value of Aquatic Plants Eichhornia Crassipes, Ipomoea Aquatica, and Hydrilla Verticillata: Potential Therapeutics in Drug Design and Discovery." African Journal of Biological Sciences 6, Si4 (July 5, 2024): 2097–106. http://dx.doi.org/10.48047/afjbs.6.si4.2024.2097-2106.

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Plants play a pivotal role in human medicine, offering a vast array of bioactive compounds with therapeutic properties. As the main producers in most water habitats, aquatic plants are crucial. Though the aquatic habitat is rich in plant species, little research has been done on their medicinal potential. Some studies studied aquatic flora's ethno-medicinal, economic, and edible functions. Aquatic plants contain unique biological properties that could be used in agriculture, ornamentation, nutraceuticals, horticulture, and medicine. Aquatic plants, such as Eichhornia crassipes, Ipomoea aquatica, and Hydrilla verticillata, possess valuable effects like antimicrobial, antitumor, and antioxidant effects. Despite their potential, aquatic plants have often been undervalued, and more work required to fully explore their medicinal properties in various regions. In this review aquatic plants from India which is calmed to cure various diseases in Indian system of medicine. Moreover, the present review highlights the therapeutic potential of above three aquatic plants, urging researchers to evaluate their medicinal effectiveness and consider their applicability in medical fields.

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Huang, Jun-En, Hai-Yan Song, Xi-Gen Huang, Jian Ma, and Dian-Ming Hu. "Phaeomonilia aquatica sp. nov., an aquatic hyphomycete from China." Mycotaxon 132, no. 4 (January 17, 2018): 919–23. http://dx.doi.org/10.5248/132.919.

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Nowak, Julia S., Jasmine Ono, and Quentin C. B. Cronk. "Anatomical study of an aquatic mustard: Subularia aquatica (Brassicaceae)." Aquatic Botany 93, no. 1 (July 2010): 55–58. http://dx.doi.org/10.1016/j.aquabot.2010.02.004.

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Heeger, Felix, Elizabeth C. Bourne, Christian Wurzbacher, Elisabeth Funke, Anna Lipzen, Guifen He, Vivian Ng, Igor V. Grigoriev, Dietmar Schlosser, and Michael T. Monaghan. "Evidence for Lignocellulose-Decomposing Enzymes in the Genome and Transcriptome of the Aquatic Hyphomycete Clavariopsis aquatica." Journal of Fungi 7, no. 10 (October 12, 2021): 854. http://dx.doi.org/10.3390/jof7100854.

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Fungi are ecologically outstanding decomposers of lignocellulose. Fungal lignocellulose degradation is prominent in saprotrophic Ascomycota and Basidiomycota of the subkingdom Dikarya. Despite ascomycetes dominating the Dikarya inventory of aquatic environments, genome and transcriptome data relating to enzymes involved in lignocellulose decay remain limited to terrestrial representatives of these phyla. We sequenced the genome of an exclusively aquatic ascomycete (the aquatic hyphomycete Clavariopsis aquatica), documented the presence of genes for the modification of lignocellulose and its constituents, and compared differential gene expression between C. aquatica cultivated on lignocellulosic and sugar-rich substrates. We identified potential peroxidases, laccases, and cytochrome P450 monooxygenases, several of which were differentially expressed when experimentally grown on different substrates. Additionally, we found indications for the regulation of pathways for cellulose and hemicellulose degradation. Our results suggest that C. aquatica is able to modify lignin to some extent, detoxify aromatic lignin constituents, or both. Such characteristics would be expected to facilitate the use of carbohydrate components of lignocellulose as carbon and energy sources.

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Simanjuntak, Mega Sarmauli, Aryadi Rachman, and Nurdiansyah Nurdiansyah. "Analisis manajemen pembinaan club tibra banua aquatic." Jurnal Porkes 7, no. 1 (June 30, 2024): 387–99. http://dx.doi.org/10.29408/porkes.v7i1.25693.

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The purpose of the study was to examine the management of coaching athletes club tibra banua aquatic. The population determination is the club management and athletes, for purposive sampling testing selected with the club owner, 2 coaches and 2 athletes. Qualitative descriptive approach method. Instruments and data collection techniques through observation, interviews, documentation and triangulation techniques. After the data is collected, it is reduced and then analyzed. The results show that the tibra banua aquatic club has implemented the management function correctly, the planning of the tibra banua aquatic club is quite good. Evidenced by the running of daily activity management and training which is held regularly according to a predetermined schedule, the tibra banua aquatics club already has an organizational structure, supervision at the tibra banua aquatics club is directly supervised by the club's chief coach and assisted by assistant coaches, for beginners directly supervised by assistant coaches and chief coaches and senior athletes supervised by the chief coach, supervision is carried out openly. For funding there is no sponsor, and only from monthly athlete fees and other service fees, club funds for the needs of tibra banua aquatic club activities. In conclusion, the club is an organization that has been registered with the parent sport, namely the Indonesian aquatic federation, so the club is said to be a legal organization and can take part in competitions held by the parent sport.

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Langendorfer, Stephen. "Aquatic Experiences for Young Children: Evaluating Risks and Benefits." Pediatric Exercise Science 1, no. 3 (August 1989): 230–43. http://dx.doi.org/10.1123/pes.1.3.230.

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Aquatic experiences including structured instructional programs for young children have become extremely popular over the past two decades despite opposition and controversy. Surprisingly, this popularity and controversy have not given rise to extensive or sustained research efforts by exercise scientists or aquatic professionals. Most information available for assessing risks and benefits of aquatic experiences for young children must be gleaned from ancillary sources in medical and educational literature. This paper reviews important issues and questions in the medical, developmental, and pedagogical areas of early childhood aquatics. The need for basic and applied research efforts by teams of exercise scientists from physiologic, psychologic, medical, and aquatic backgrounds is apparent.

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Looman, J. "The vegetation of the Canadian Prairie Provinces III. Aquatic and semi-aquatic vegetation, Part 3 Aquatic plant communities." Phytocoenologia 14, no. 1 (March 10, 1986): 19–54. http://dx.doi.org/10.1127/phyto/14/1986/19.

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Czeczuga, Bazyli, and Anna Godlewska. "Aquatic insects as vectors of aquatic zoosporic fungi parasitic on fishes." Acta Ichthyologica et Piscatoria 31, no. 2 (December 31, 2001): 87–104. http://dx.doi.org/10.3750/aip2001.31.2.07.

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Verhaegen, Marc. "Aquatic Versus Savanna: Comparative and Paled-Environmental Evidence." Nutrition and Health 9, no. 3 (July 1993): 165–91. http://dx.doi.org/10.1177/026010609300900304.

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This paper begins by comparing anatomical and physiological features of humans and other groups of mammals (apes and arboreal mammals, open-country dwellers, fully aquatic mammals, and semi-aquatics), in order to establish the nature of the environment where Homo originated. It concludes that the evidence completely invalidates the savanna theory and strongly favours the semi-aquatic hypothesis. The second part points out that nothing in the fossil record disproves this conclusion, and quotes paleo-environmental evidence concerning the milieu where the ancient hominids fossilised.

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Kroflič, Ana, Mateja Germ, Špela Mechora, and Vekoslava Stibilj. "Selenium and its compounds in aquatic plant Veronica anagallis-aquatica." Chemosphere 151 (May 2016): 296–302. http://dx.doi.org/10.1016/j.chemosphere.2015.12.103.

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Conatser, Phillip, Martin Block, and Bruce Gansneder. "Aquatic Instructors’ Beliefs Toward Inclusion: The Theory of Planned Behavior." Adapted Physical Activity Quarterly 19, no. 2 (April 2002): 172–87. http://dx.doi.org/10.1123/apaq.19.2.172.

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The purpose was to (a) examine aquatic instructors’ beliefs (female, n = 82; male, n = 29) about teaching swimming to individuals with disabilities in inclusive settings and (b) test the theory of planned behavior model (Ajzen, 1985, 1988, 2001). Aquatic instructors from 25 states representing 122 cities across the U.S. participated in this study. The instrument, named Aquatic Instructors’ Beliefs Toward Inclusion (AIBTI), was an extended version of the Physical Educators’ Attitudes Toward Teaching Individuals with Disabilities— Swim (Conatser, Block, & Lepore, 2000). A correlated t test showed aquatic instructors’ beliefs (attitudes toward the behavior, normative beliefs, perceived behavioral control, intention, behavior) were significantly more favorable toward teaching aquatics to individuals with mild disabilities than individuals with severe disabilities. Stepwise multiple regression showed perceived behavioral control and attitude significantly predicted intention, and intention predicted instructors’ inclusive behavior for both disability groups. Further, results indicated the theory of planned behavior predicts aquatic instructors’ behavior better than the theory of reasoned action.

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Sudipta, I. Gusti Made, I. Wayan Arthana, and Endang Wulandari Suryaningtyas. "Kerapatan dan Persebaran Tumbuhan Air di Danau Buyan Kabupaten Buleleng, Provinsi Bali." Journal of Marine and Aquatic Sciences 6, no. 1 (September 11, 2020): 67. http://dx.doi.org/10.24843/jmas.2020.v06.i01.p09.

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The Bali province has four lakes, one of them is Buyan lake. One of communities that has important roles in lake waters ecosystem as an primary production is a community of aquatic plants. The existence of aquatic plants as weed will suffer losses more than the beneficial. So that research on density and distribution of aquatic plants in Buyan lake is very important to do. The research aims to find out the density, distribution, domination, percent of closure and other types of aquatic plants in Buyan lake. This research was conducted for 1 month during the month of March until April 2017. The value of the density of the population (KP) aquatic plants has ranged from 2-357 individuals/m2. The value of the frequency of attendance (FK) aquatic plants ranging between 0,1-1. Morisita Index (Id) has ranged from 4,9-1,39 which shows a pattern of clumped. The value of Dominance (D) aquatic plants has ranged between 0,0001-0,9823 that showed with its low variation and high abundance. The value of aquantic plant cover has percent range from 1-72% that showed of the vegetation very rare, rare and dense. The aquatic plants found during research had 4 types of living that were type of free float (Free Floating) Salvinia molesta, Eichhornia crassipes (Submerged) Myriophyllum aquaticum, (Floating) Alternanthera philoxeroides, sticking (Emergent) Schoenoplectus paludicola, Phragmites australis, Typha capensis.

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Indriani, Rafiatun, Yani Hadiroseyani, Iis Diatin, and Media Fitri Isma Nugraha. "The The Growth Performance and Physiological Status of Comet Goldfish (Carassius auratus) in Aquascape System with Different Aquatic Plant Species." Jurnal Akuakultur Indonesia 22, no. 1 (February 10, 2023): 36–46. http://dx.doi.org/10.19027/jai.22.1.36-46.

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This study aimed to evaluate the physiological performance and status of comet goldfish (Carassius auratus) in aquascape system with different aquatic plant species. Comet goldfish (6.5 ± 0.073 cm length and 9.1 ± 0.1 g weight in average) were reared in aquaria with 10 fish/L density per aquarium for 45 days. The results obtained a positive correlation between SR value and SGR value, followed by a significant different value among the treatments applied (P<0.05). Based on the total chromatophore cells, comet goldfish reared in aquarium containing aquatic plants had a significant different (P<0.05) on the total chromatophore cells compared to aquarium without aquatic plants (control). After blood glucose test, comet goldfish reared with aquatic plants consistently showed a lower blood glucose level than without aquatic plants. The liver SOD level of comet goldfish obtained a significant different value between fish reared with aquatic plants and without aquatic plants, while the MDA value on all treatments was insignificantly different. Also, increased total erythrocytes, total leucocytes, hemoglobin, and hematocrit were found on comet goldfish reared with aquatic plants. This study concludes that aquatic plants in rearing system can improve the survival rate, specific growth rate, health status of comet goldfish due to mutualistic symbiosis discovered between fish and aquatic plants. Key words: aquatic plants, comet goldfish, growth performance, and health status.

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Chanu, Laitonjam, and Abhik Gupta. "Toxicity of Zinc on Growth of an Aquatic Macrophyte, Ipomoea Aquatica Forsk." Current World Environment 11, no. 1 (April 25, 2016): 218–27. http://dx.doi.org/10.12944/cwe.11.1.27.

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The effects of different concentrations of Zn on growth of an aquatic macrophyte, Ipomoea aquatica Forsk. were studied. Fresh weight, dry weight, shoot length, root length, number of nodes, development of leaves, and chlorophyll and carotene contents were the different growth parameters considered. Toxicity symptoms like browning and decaying of roots could be observed in plants treated at 22.7 mg L-1 Zn as early as 3rd day of experiment while yellowing of older leaves appeared during the later period of exposure. High concentration of Zn (12.71 – 22.7 mg L-1) significantly inhibited the growth of plant while lower Zn concentrations up to 4.09 mg L-1 enhanced its growth. However, at 7.26 mg L-1 Zn the chlorophyll as well as total carotene content in leaf of I. aquatica were significantly reduced from that in control on 5th day of exposure and subsequently the reduction was observed in lower concentrations. Thus, I. aquatica can be employed in biomonitoring of Zn polluted aquatic ecosystems using root browning, root and shoot growth inhibition, and chlorophyll and total carotene contents as sensitive biomarkers.

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Junghanns, Charles, Monika Moeder, Gudrun Krauss, Claudia Martin, and Dietmar Schlosser. "Degradation of the xenoestrogen nonylphenol by aquatic fungi and their laccases." Microbiology 151, no. 1 (January 1, 2005): 45–57. http://dx.doi.org/10.1099/mic.0.27431-0.

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Degradation of technical nonylphenol (t-NP), known as an endocrine-disrupting compound mixture, was assessed, using the mitosporic fungal strain UHH 1-6-18-4 isolated from nonylphenol-contaminated river water, and a strain of the aquatic hyphomycete Clavariopsis aquatica. GC-MS analysis could resolve 12 peaks attributable to nonyl chain-branched t-NP isomers. All were degraded, to individual extents. Analysis of degradation metabolites suggested intracellular hydroxylation of the nonyl moieties of individual t-NP isomers. Further metabolites also indicated shortening of branched nonyl chains, and 4-hydroxybenzoic acid was identified as a t-NP breakdown product in UHH 1-6-18-4. The t-NP degradation efficiency was higher in UHH 1-6-18-4 than in C. aquatica, and a lower specificity in degradation of individual t-NP constituents in UHH 1-6-18-4 than in C. aquatica was observed. Strain UHH 1-6-18-4 concomitantly produced extracellular laccase under degradation conditions. A mixture of CuSO4 and vanillic acid considerably enhanced laccase production in both fungi. Laccase preparations derived from UHH 1-6-18-4 and C. aquatica cultures also converted t-NP. Laccase-catalysed transformation of t-NP led to the formation of products with higher molecular masses than that of the parent compound. These results emphasize a role of fungi occurring in aquatic ecosystems in degradation of water contaminants with endocrine activity, which has not previously been considered. Furthermore, the results are in support of two different mechanisms employed by fungi isolated from aquatic environments to initiate t-NP degradation: hydroxylation of individual t-NP isomers at their branched nonyl chains and further breakdown of the alkyl chains of certain isomers; and attack of t-NP by extracellular laccase, the latter leading to oxidative coupling of primary radical products to compounds with higher molecular masses.

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Suraiya, Sharmin, Suraiya Afrin Bristy, Md Sadek Ali, Anusree Biswas, Md Rasal Ali, and Monjurul Haq. "A Green Approach to Valorizing Abundant Aquatic Weeds for Nutrient-Rich Edible Paper Sheets Production in Bangladesh." Clean Technologies 5, no. 4 (October 23, 2023): 1269–86. http://dx.doi.org/10.3390/cleantechnol5040064.

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The rapid and unprecedented expansion of the global population highlights concerns about the sufficiency of food resources to sustain this growth. This study investigates and substantiates the feasibility of renewable food resources in order to meet the nutritional requirements of consumers. Three edible aquatic weeds, helencha (Enhydra fluctuans), malancha (Alternanthera philoxeroides), and kalmi (Ipomoea aquatica), were used to produce edible paper sheets. The composition of the raw aquatic weeds and paper sheet samples was analyzed, including the proximate composition, amino acid content, minerals and heavy metal contents, and bioactive compounds. The dried raw aquatic weeds and paper sheets showed similar proximate compositions, with carbohydrates being the highest component (50.38–64.63%), followed by crude protein (15.25–19.13%), ash (9.30–15.88%), and lipid (1.55–3.43%). The raw weeds and paper sheets were rich in essential minerals like Na, Ca, and Zn with contents ranging from 27.7 mg/100 g to 30.4 mg/100 g, 126.8 mg/100 g to 489.65 mg/100 g, and 4.5 mg/100 g to 16.3 mg/100 g, respectively. Acceptable levels of heavy metals, including Ni, Pb, and Cu, were found. The paper sheets contained seven essential and eight non-essential amino acids. Among the essential amino acids, the phenylalanine content was the highest at 2735.9 mg/100 g in E. fluctuans paper sheets, followed by methionine at 2377.29 mg/100 g in the raw E. fluctuans and histidine at 1972.6 mg/100 g in E. fluctuans paper sheets. A. philoxeroides sheets showed the highest total amino acid content (16,146.81 mg/100 g), while I. aquatica showed the lowest (13,118.67 mg/100 g). The aquatic weed paper sheets were rich in bioactive compounds, and the numbers in E. fluctuans, A. philoxeroides, and I. aquatica paper sheets were 31, 33, and 40, respectively. There were no significant changes in the nutritional content of the aquatic weeds in paper sheet form compared with the raw weeds, which suggests promising prospects for their production and consumption as a source of nutrition and bioactive compounds.

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FU, XINHUA, LESLEY BALLANTYNE, and CHRISTINE L. LAMBKIN. "Aquatica gen. nov. from mainland China with a description of Aquatica wuhana sp. nov. (Coleoptera: Lampyridae: Luciolinae)." Zootaxa 2530, no. 1 (July 8, 2010): 1. http://dx.doi.org/10.11646/zootaxa.2530.1.1.

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Aquatica, a new genus of aquatic fireflies from mainland China, is described and keyed from males of A. leii (Fu et Ballantyne 2006), A. ficta (Olivier 1909), A. hydrophila (Jeng et al. 2003) and A. lateralis (Motsch. 1860), all transferred from Luciola, and A. wuhana sp. n. from Hubei Province, which is described from adult males and females and larvae. Adult females and larvae are associated for all species. Five species of aquatic fireflies are now recorded from China.

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Uddin, Mohammad Zashim, and Joton Chandra Pal. "Preliminary taxonomic survey of aquatic plants of Feni district, Bangladesh." Bangladesh Journal of Plant Taxonomy 27, no. 1 (June 14, 2020): 103–11. http://dx.doi.org/10.3329/bjpt.v27i1.47572.

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Preliminary taxonomic survey of aquatic plants of Feni district was conducted between July 2016 and June 2017. Traditional taxonomic techniques and random meander methods were applied to record and collect aquatic plant species. A total of 56 aquatic plant species under 29 families were recorded from Feni district. Ecological habitats of aquatic plant species showed variations. Among them, 30% species prefer to grow near the edge of water, 20% as rooted submerged, 18% as rooted emergent, 16% as free floating, 12% as rooted floating and 4% surface creeper in the aquatic habitat. The uses of aquatic plants were showed that 27% species were used as fodder, 14% as medicinal, 11% as vegetable, 11% as edible fruits, 5% as duck weeds, 2% as artifacts and 30% as others purposes in the study area. Abundance of aquatic plant species in the habitat was showed variations. Among them 9% was found very abundant, 30% found common and 61% found rare in the study area. Based on the field observations and discussion with local people we were able to identify a good number of threats to aquatic plants and also pointed out some conservation measures for them. It was seemed that the species Achyranthes aquatica (thuash), Oenanthe javanica (painnaadani), and Chumannianthus dichotomus (patipata) were found to be limited in distribution outside Feni. These rare species need to be given priority for in situ and ex situ conservation. Bangladesh J. Plant Taxon. 27(1): 103-111, 2020 (June)

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Kawade, S. S., Sedyaaw Panchakarla, and P. H. Sapkale. "Review on Aquatic Weeds and Their Management." Environment and Ecology 41, no. 4C (December 2023): 2900–2908. http://dx.doi.org/10.60151/envec/wilr4817.

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When aquatic weeds grow too much, they pose a threat to fish farming. An essential component of pond management is weed control. Out of approximately 160 aquatic weeds, the primary focus in India revolves around Eichhornia crrassipes, Ipomoea aquatica, Typha angustata, Ceratophyllum demersum, Salvinia molesta, Nelumbo nucifera, Alternanthera philoxeroides, Hydrilla verticillata, Vallisneria spiralis, Chara spp., Nitelia spp., and Potamogeton spp. Aquatic weeds are rapidly expanding in several irrigation and hydropower projects across the nation, including the Kakki and Idikki reservoirs in Kerala, the Tungabhadra project in Karnataka, the Nagarjuna Sagar project in Andhra Pradesh and the Powai Lake in Maharashtra. Biological, chemical, and physical strategies can all be used to control aquatic weeds. Aquatic weeds can be stopped from spreading or eliminated using a few common control methods. Physical remedies work best for small-scale infestations, but they are expensive and prone to regrowth when used on big water bodies. Herbicide control of tiny infestations has frequently been quite successful, but it significantly depends on trained operators who keep a close eye out for the appearance of regrowth or seedlings over a lengthy period. The amount of nutrients released into water in recent decades has significantly increased from home and industrial sources as well as from land where fertilizers are applied or where clearing has increased run off. This essay examines the problems associated with eight aquatic weeds in India and the efforts made so far to control them through a range of techniques.

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Wan Mohd Musdek, Wan Noraina Atikah, Mohd Khalizan Sabullah, Nor Mustaiqazah Juri, Norliza Abu Bakar, and Noor Azmi Shaharuddin. "Screening of aquatic plants for potential phytoremediation of heavy metal contaminated water." Bioremediation Science and Technology Research 3, no. 1 (November 2, 2015): 6–10. http://dx.doi.org/10.54987/bstr.v3i1.245.

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Bioremediation is a new green economic approach in providing solutions for cleaning up contaminated sites. Phytoremediation uses plants as a tool for remediation purposes. The usage of plant species offers higher potential solution to remediate heavy metal contaminated sites. This study aimed on screening potential plant species for phytoremediation of heavy metal contaminated water. The potential of three aquatic macrophytes species (Eichorrnia crassipes, Pistia stratiotes and Ipomoea aquatica) for chromium and nickel phytoremediations was tested. The plants were exposed for 10 days under hydroponic conditions in heavy metal contaminated water. E. crassipes showed the highest chromium and nickel concentrations in its biomass, 1.60 and 2.40 Î¼g/L respectively. Meanwhile, P. stratiotes had chromium and nickel concentrations detected at 0.89 and 0.081 Î¼g/L, respectively; chromium and nickel concentrations of I. aquatica detected were, 0.49 and 0.08 Î¼g/L, respectively. The ability of these plants to accumulate heavy metals and survived throughout the experiment demonstrates the potential of these plants to remediate metal-enriched water. Among the three tested aquatic plants, E. crassipes was proven to be the most suitable plant species that can phytoremediate heavy metal contaminated water followed by P. stratiotes and I. aquatica.

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Elakovich, Stella D. "Allelopathic aquatic plants for aquatic weed management." Biologia Plantarum 31, no. 6 (November 1989): 479–86. http://dx.doi.org/10.1007/bf02876221.

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Li, Wenxiang, and Zhongjie Li. "In situ nutrient removal from aquaculture wastewater by aquatic vegetable Ipomoea aquatica on floating beds." Water Science and Technology 59, no. 10 (May 1, 2009): 1937–43. http://dx.doi.org/10.2166/wst.2009.191.

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Nutrient-rich effluents caused rising concern due to eutrophication of aquatic environment by utilization of a large amount of formula feed. Nutrient removal and water quality were investigated by planting aquatic vegetable on artificial beds in 36-m2 concrete fishponds. After treatment of 120 days, 30.6% of total nitrogen (TN) and 18.2% of total phosphorus (TP) were removed from the total input nutrients by 6-m2 aquatic vegetable Ipomoea aquatica. The concentrations of TN, TP, chemical oxygen demand (COD) and chlorophyll a in planted ponds were significantly lower than those in non-planted ponds (P<0.05). Transparency of water in planted ponds was much higher than that of control ponds. No significant differences in the concentration of total ammonia nitrogen (TAN), nitrate nitrogen (NO3−-N) and nitrite nitrogen (NO2−-N) were found between planted and non-planted ponds. These results suggested that planting aquatic vegetable with one-sixth covered area of the fishponds could efficiently remove nutrient and improve water quality.

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Kamada, Takashi, Shean-Yeaw Ng, Chin-Soon Phan, and Charles S. Vairappan. "Chemical Composition and Antibacterial Activity of Bornean Medicinal Ginger Alpinia aquatica." Natural Product Communications 13, no. 6 (June 2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300623.

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One new phenylbutenoid, (3 Z)-2′,4′,5′-trimethoxyphenylbutadiene (1) along with five known metabolites were isolated from aquatic galangal ( Alpinia aquatica Rosc.) and their chemotaxonomy importance in five populations of A. aquatica collected from Kota Kinabalu, Ranau and Kota Belut in Sabah, Malaysia. The antibacterial potential as well as the chemosystematics importance of this discovery is discussed.

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Solé, Magali, Ines Müller, Marek J. Pecyna, Ingo Fetzer, Hauke Harms, and Dietmar Schlosser. "Differential Regulation by Organic Compounds and Heavy Metals of Multiple Laccase Genes in the Aquatic Hyphomycete Clavariopsis aquatica." Applied and Environmental Microbiology 78, no. 13 (April 27, 2012): 4732–39. http://dx.doi.org/10.1128/aem.00635-12.

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ABSTRACTTo advance the understanding of the molecular mechanisms controlling microbial activities involved in carbon cycling and mitigation of environmental pollution in freshwaters, the influence of heavy metals and natural as well as xenobiotic organic compounds on laccase gene expression was quantified using quantitative real-time PCR (qRT-PCR) in an exclusively aquatic fungus (the aquatic hyphomyceteClavariopsis aquatica) for the first time. Five putative laccase genes (lcc1tolcc5) identified inC. aquaticawere differentially expressed in response to the fungal growth stage and potential laccase inducers, with certain genes being upregulated by, e.g., the lignocellulose breakdown product vanillic acid, the endocrine disruptor technical nonylphenol, manganese, and zinc.lcc4is inducible by vanillic acid and most likely encodes an extracellular laccase already excreted during the trophophase of the organism, suggesting a function during fungal substrate colonization. Surprisingly, unlike many laccases of terrestrial fungi, none of theC. aquaticalaccase genes was found to be upregulated by copper. However, copper strongly increases extracellular laccase activity inC. aquatica, possibly due to stabilization of the copper-containing catalytic center of the enzyme. Copper was found to half-saturate laccase activity already at about 1.8 μM, in favor of a fungal adaptation to low copper concentrations of aquatic habitats.

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IpsitaSarkar and ShaikhMotasimBillah. "Assessment of soil chemical properties through application of fresh aquatic weeds." Journal of Scientific and Innovative Research 3, no. 2 (April 25, 2014): 227–33. http://dx.doi.org/10.31254/jsir.2014.3218.

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Soils from Bajoa soil series (Typic endoequepts) were placed in pots for aquatic weeds application and to analyze chemical parameters (pH, EC, N, P, K, S, organic matter) of the treated soil. Three aquatic weeds were selected; those are Water hyacinth (Eichhomia crassipes), Water lettuce (Pistia stratiotes) and Water spinach (Ipomea aquatica). All the chemical properties were found improved for the treatment T3 (water spinach; 3000kg hac-1) and T4 (water spinach; 2000 kg hac-1) and most of the attributes were found as minimum for control. The macro nutrients such as N, P, K, S, are improved in the soil by the application of aquatic weeds as green manure because green manure plant creates more acidic condition which extracts more nutrients from fixed position in soil to bio-available form by root exudation.

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Gili, Claudia, Mauro Vasconi, and Flavio Gagliardi. "Impact of SARS-CoV-2 on Aquaria: An Italian Perspective." Journal of Applied Animal Ethics Research 3, no. 1 (May 4, 2021): 74–90. http://dx.doi.org/10.1163/25889567-bja10015.

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Abstract Aquatic animals have been maintained by humans in confined spaces since very ancient times. In the last century both, the need to implement seafood productions and the popularity of aquatic exhibits, have facilitated professional scientific development of live fish management techniques. In this context, aquatic animal welfare has therefore become an important standpoint to guarantee good and safe quality of seafood and sustainable aquaria and zoological collections. At the end of 2019, SARS-CoV-2 severely affected human health in China and shortly became pandemic, hence influencing globally most types of businesses. All animal industries fully dependent on human daily activities and resources, have been severely impacted by human distancing and isolation protocols. During this world crisis, extensive changes in aquarium management procedures had to be applied. Specific contingency plans were developed to protect humans and to guarantee animal care, in order to avoid the risk for aquaria fading away.

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Crews, Sarah C., Erika L. Garcia, Joseph C. Spagna, Matthew H. Van Dam, and Lauren A. Esposito. "The life aquatic with spiders (Araneae): repeated evolution of aquatic habitat association in Dictynidae and allied taxa." Zoological Journal of the Linnean Society 189, no. 3 (December 17, 2019): 862–920. http://dx.doi.org/10.1093/zoolinnean/zlz139.

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Abstract Despite the dominance of terrestriality in spiders, species across a diverse array of families are associated with aquatic habitats. Many species in the spider family Dictynidae are associated with water, either living near it or, in the case of Argyroneta aquatica, in it. Previous studies have indicated that this association arose once within the family. Here we test the hypothesis of a single origin via the broadest phylogeny of dictynids and related ‘marronoids’ to date, using several taxa that were not previously sampled in molecular analyses to provide the first quantitative test of the hypothesis put forth by Wheeler et al. (2016). We sampled 281 terminal taxa from 14 families, assembling a matrix with 4380 total base pairs of data from most taxa. We also assembled an atlas of morphological traits with potential significance for both ecology and taxonomy. Our resulting trees indicate that an aquatic habitat association has arisen multiple times within dictynids. Dictynidae and the genus Dictyna are polyphyletic and the genera Lathys and Cicurina remain unplaced. A review of aquatic habitat associations in spiders indicates that it occurs in members of at least 21 families. With our morphological atlas, we explore characters that have been implicated in aiding an aquatic lifestyle, which in the past may have caused confusion regarding taxon placement. Our results indicate that not all spiders with traits thought to be useful for aquatic habitat associations occupy such habitats, and that some spider taxa lacking these traits are nonetheless associated with water.

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Disney, R. Henry L., and Damir Kovac. "New aquatic species of Megaselia Rondani from Bolivia (Diptera: Phoridae)." Fragmenta Entomologica 50, no. 2 (December 21, 2018): 117–30. http://dx.doi.org/10.4081/fe.2018.291.

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Ten aquatic species of Megaselia Rondani (1856) are reported from the internodes of the large bamboo Guadua angustifolia var. chacoensis in Bolivia. Megaselia aquatica sp. n., and M. imitatrix Borgmeier (1969) are named and seven species given code letters as their males remain unknown. Five of these species closely resemble the distinctive M. imitatrix. The eggs of species C, in addition to a subterminal plastron, uniquely have the rest of the egg covered in fine hairs. Three additional Megaselia species reported from bamboo or other phytotelms in the Americas, Megaselia hansonix Disney (2009), M. rufipes (Meigen) (1804) and M. scalaris (Loew) (1866) are illustrated. A key for Megaselia from the Americas reported from aquatic situations is presented.

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Nugraha, Media Fitri Isma, Saeful Yusuf, Th Rina Mulyaningsih, Luki Subehi, Atriyon Julzarika, Kayat, Yustiawati, Imroatushshoolikhah, and Hanhan A. Sofiyuddin. "Phytoremediation test of aquatic plant species in Lake Ledulu Rote Island (Indonesia) using neutron activation analysis." IOP Conference Series: Earth and Environmental Science 1119, no. 1 (December 1, 2022): 012091. http://dx.doi.org/10.1088/1755-1315/1119/1/012091.

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Abstract Ledulu Lake is one of the lakes in the Rote Ndao Region. Lake Ledulu was formed in the Quaternary period with Cenozoic constituents and Neogene deposits based on geological formations. The formations found in the Lake area are sediment, chemical, limestone. The purpose of this study was to measure the metal content in the lake water and its absorption by aquatic vegetation in the ecosystem of Ledulu lake, using Instrumental neutron activation analysis (INAA) technique. NAA is one of the modern methods that is able to measure the level of heavy metal uptake in aquatic biota (water animals and aquatic plants). The metal content in the water of the lake (mg/L) is: Bromine 405.06, Calcium 7,195.66, Cerium 9.10, Cobalt 2.43, Chromium 45.90, Lanthanum 12.07, Magnesium 1,189.93, Sodium 24,382.31. Aquatic plants that absorb heavy metals in lake Ledulu are Panicum sp, Ludwigia adscendens (L.) H.Hara, Ottelia alismoides (L) pers, Najas sp, Ipomea aquatica Forssk, Pontederia korsakowii (Regel & Maack) M.Pell. & C.N.Horn, Callitriche sp, Bacopa monnierii, and Nymphaea alba L. Sodium is not absorbed by Panicum sp, Ludwigia adsendence (L), and Nymphaea alba. Lanthanum is only absorbed by Panicum sp and Callitriche sp. All other elements can be absorbed by aquatic plants in the Ledulu lake ecosystem with different absorption concentrations.

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Fu, Bao Rong, Nan Li, Jian Wu, Run Jie Zhang, and Xiu Juan Hui. "Summary of the Toxicological Effect of Bisphenol A in Aquatic." Advanced Materials Research 518-523 (May 2012): 2034–38. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2034.

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Bisphenol A（BPA）is an exogenous substance. It can disturb the normal incretion and influence the physiological process of organism, especially the aquatic. This article presented the characteristics and distribution of BPA in water. Meanwhile, the effects on daphnia magna and zebra fish and other aquatics caused by BPA were presented in detail. Finally, the research trends of BPA were discussed.

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Ira Nadel. "Aquatic Roth." Philip Roth Studies 14, no. 1 (2018): 36. http://dx.doi.org/10.5703/philrothstud.14.1.0036.

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Baumann, Richard W., Vincent H. Resh, and David M. Rosenberg. "Aquatic Insects." Ecology 67, no. 2 (April 1986): 589. http://dx.doi.org/10.2307/1938611.

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Thomas, J. D., J. M. Caffrey, P. R. F. Barrett, K. J. Murphy, and P. M. Wade. "Aquatic Ecology." Global Ecology and Biogeography Letters 7, no. 3 (May 1998): 229. http://dx.doi.org/10.2307/2997386.

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Fuller, Christopher B., Michael J. Quinney, Natarajan Malupillai, Anand Sundaresan, Shakti Swaroop, and Andrew N. Ernest. "Aquatic sediments." Water Environment Research 67, no. 4 (June 1995): 614–29. http://dx.doi.org/10.2175/106143095x135895.

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Marek, Donald W., Mohammed K. Ali, and Andrew N. Ernest. "Aquatic sediments." Water Environment Research 68, no. 4 (June 1996): 629–62. http://dx.doi.org/10.2175/106143096x135579.

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Castro, Robert, Armando Bosquez, Mohammed K. Ali, and Andrew N. Ernest. "Aquatic sediments." Water Environment Research 69, no. 4 (June 1997): 749–77. http://dx.doi.org/10.2175/106143097x135037.

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Cheng, Chen-Yu, Peggy L. Sumner, Christopher B. Fuller, and Andy N. Ernest. "Aquatic sediments." Water Environment Research 70, no. 4 (June 1998): 780–807. http://dx.doi.org/10.2175/106143098x134497.

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Hernandez, E. Annette, and Andrew N. Ernest. "Aquatic Sediments." Water Environment Research 71, no. 5 (August 1999): 948–73. http://dx.doi.org/10.2175/106143099x133929.

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Jones, J. Gwynfryn, and G. Rheinheimer. "Aquatic Microbiology." Journal of Ecology 74, no. 3 (September 1986): 911. http://dx.doi.org/10.2307/2260413.

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Ulrich, Heidi, Michael Landthaler, and Thomas Vogt. "Aquatic dermatoses." JDDG 6, no. 2 (February 2008): 133–47. http://dx.doi.org/10.1111/j.1610-0387.2007.06590.x.

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T.M.B. "Aquatic Astronomy." Scientific American 257, no. 5 (November 1987): 38–39. http://dx.doi.org/10.1038/scientificamerican1187-38.

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Journal articles on the topic 'Aquatic'

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