Distribution Characteristics and Ecosystem Risk Assessment of Dotted Duckweed (&lt;i&gt;Landoltis punctate&lt;/i&gt;) in Jeju Island, Korea

Choi, Jong-Yun; Kim, Nam‐Young; Ryu, Tae-Bok; Choi, Dong‐Hee; Deokki-Kim,; Kim, Seong‐Ki

doi:10.13047/kjee.2018.32.4.425

Cited by 4 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each food item encountered in the gut was allocated a food trophic level (TL/Tis). The food trophic levels for each dietary items were obtained from Kihia Data on the relative contribution of each food item (FI) calculated and respective food item trophic level (Tis) were subsequently used to compute fish trophic levels (TL) as in Choi et al (2008) and Kihia et al (2015) using the following equation:…”

Section: Fish Trophic Levels (Tl)mentioning

confidence: 99%

Diet and trophic interactions between catadromous eels and sympatric fish in Kenyan east flowing river systems

Tembo,

Kihia,

Kitaka

et al. 2023

WIO J. Mar. Sci.

View full text Add to dashboard Cite

Biotic interactions such as competition and predation are important ecological drivers of population structure. Interactions among higher trophic level fish can contribute to further population declines in species, such as eels, made vulnerable by overexploitation or environmental change. Furthermore, trophic interactions may further predispose eel populations to collapse, but this is poorly understood, particularly along the Western Indian Ocean (WIO) rivers. This study evaluated stomach contents of fish captured with glass and commercial fyke nets in the Athi and Ramisi Rivers, which discharge into the WIO. Stomach contents were examined using dissecting microscope to establish diet composition. Eels primarily consumed assorted fish (43 %), and crustaceans (36 %); such as penaeid shrimp (14%) and prawns (13%) and crab (9%), thus belonged to a higher trophic level (TL) of 3.47 than native (2.98) or introduced (2.8) sympatric fish species. Diet breadth of eels was significantly lower (0.20) than for sympatric fish species (0.27), attributed to higher diet specialization. The TL of carnivorous fish (3.19) and their diet compared well with those of eels, even though diet preference differed significantly among fish types. Consequently, eels ranked as vulnerable by the IUCN are further threatened by previously undescribed competition from carnivorous fish.

show abstract

Section: Fish Trophic Levels (Tl)mentioning

confidence: 99%

Diet and trophic interactions between catadromous eels and sympatric fish in Kenyan east flowing river systems

Tembo,

Kihia,

Kitaka

et al. 2023

WIO J. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…Although these species were frequently introduced into South Korea in the past, it was only recently confirmed that a stable settlement was established [77,78]. Moreover, invasive plant species such as Landoltia punctata and P. distichum recently and rapidly began spreading in South Korea [79,80]. The settlement of B. chalybea flavovittata in the Yeongsan River basin is, therefore, an example of a continuous settlement pattern.…”

Section: Geographical Extension and Settlement Of Brachydiplax Chalybea Flavovittata Larvae In South Koreamentioning

confidence: 99%

Habitat Preferences and Trophic Position of Brachydiplax chalybea flavovittata Ris, 1911 (Insecta: Odonata) Larvae in Youngsan River Wetlands of South Korea

Choi

Kim

et al. 2020

Insects

Self Cite

View full text Add to dashboard Cite

In freshwater ecosystems, habitat heterogeneity supports high invertebrate density and diversity, and it contributes to the introduction and settlement of non-native species. In the present study, we identified the habitat preferences and trophic level of Brachydiplax chalybea flavovittata larvae, which were distributed in four of the 17 wetlands we examined in the Yeongsan River basin, South Korea. Larval density varied across four microhabitat types: open water area, and microhabitats dominated by Myriophyllum aquaticum, Paspalum distichum, and Zizania latifolia. Microhabitats dominated by M. aquaticum had the highest larval density, followed by those dominated by P. distichum. The larvae were more prevalent in silt sediments than in plant debris or sand. Stable isotope analysis showed that B. chalybea flavovittata is likely to consume, as a food source, other species of Odonata larvae. We conclude that successful settlement of B. chalybea flavovittata can be attributed to their habitat preferences. As temperature increases due to climate change, the likelihood of B. chalybea flavovittata spreading throughout South Korea increases. We, therefore, recommend continued monitoring of the spread and ecological impacts of B. chalybea flavovittata.

show abstract

“…The length of Lemna minor roots is around 0.5-15 cm [12,13]. Lee et al [14] stated that the root length of Landoltia punctata is 0.81-3.16 cm and has the number of root hairs which is 7-12 [15]. Azolla pinnata has roots of 1-5 cm long and has 3-6 root hairs [16].…”

Section: Biochemical Oxygen Demand 5 (Bod 5 )mentioning

confidence: 99%

The Effectiveness of the Use of Aquatic Plants (Lemna perpusilla, Landoltia punctata and Azolla pinnata) in the Phytoremediation Process of Catfish Aquaculture Wastewater

Amyati

Hasan

Supriadi

et al. 2020

AJFAR

View full text Add to dashboard Cite

Aims: The purpose of this study was to determine aquatic plants (Lemna perpusilla, Landoltila punctata and Azolla pinnata) that have the most effective ability as phytoremediation agents for catfish cultivation wastewater. Study Design: This research was conducted by an experimental method, with a Completely Randomized Design (CRD) consisting of three treatments and four replications. Place and Duration of Study: This research is located at the Wet Laboratory (Ciparanje) of the Faculty of Fisheries and Marine Sciences, Padjadjaran University. Water quality testing is carried out at the Water Resources Laboratory of the Faculty of Fisheries and Marine Sciences. Research was carried out on 20 July-24 September 2019. Methodology: The test wastewater was collected from catfish pond culture and put into twelve aquarium with a volume of 8 litre. Physical and chemical parameters observed include BOD5, dissolved oxygen, CO2 acidity, temperature, nitrate, and phosphate. Results: Lemna perpusilla, Landoltia punctata and Azolla pinnata were able to improve the quality of catfish culture wastewater such as increasing the concentration of dissolved oxygen (DO) and pH, and reducingBOD5, CO2, nitrate and phosphate. Lemna perpusilla was able to reduce the concentration of BOD5, CO2,carbondioxide, nitrate and phosphate from catfish cultivation wastewater by75%; 77.7%; 23.4%; 44.2%, respectively, during the phytoremediation process, and Landoltia punctata was able to reduce the concentrations same parameters by 52%; 68.3%; 17.8%; 18.3% and Azolla pinnata by 41%; 84%; 15.3% and 28.4%. Conclusion: Lemnaper pusillamay improve the quality of catfish culture wastewater better than Landoltia punctata and Azolla pinnata. Lemna perpusilla can be recommended as phytoremediation agents catfish cultivation wastewater to remediate organic matter before being discharged directly into water bodies.

show abstract

Distribution Characteristics and Ecosystem Risk Assessment of Dotted Duckweed (<i>Landoltis punctate</i>) in Jeju Island, Korea

Cited by 4 publications

References 31 publications

Diet and trophic interactions between catadromous eels and sympatric fish in Kenyan east flowing river systems

Diet and trophic interactions between catadromous eels and sympatric fish in Kenyan east flowing river systems

Habitat Preferences and Trophic Position of Brachydiplax chalybea flavovittata Ris, 1911 (Insecta: Odonata) Larvae in Youngsan River Wetlands of South Korea

The Effectiveness of the Use of Aquatic Plants (Lemna perpusilla, Landoltia punctata and Azolla pinnata) in the Phytoremediation Process of Catfish Aquaculture Wastewater

Contact Info

Product

Resources

About