Use of functional units of periphytic protozoa for monitoring water quality in marine ecosystems: bioindicator redundancy

2021 ◽  
Author(s):  
Syed Shabi Ul Hassan Kazmi ◽  
Uroosa ◽  
Alan Warren ◽  
Guangjian Xu ◽  
Henglong Xu
Keyword(s):  
Water Quality ◽  
Marine Ecosystems ◽  
Functional Units

scholarly journals Insights into bioassessment of water quality status using functional units of protozoan periphytons in marine ecosystems

2021 ◽  
Author(s):  
Syed Shabi Ul Hassan Kazmi ◽  
Uroosa Uroosa ◽  
Henglong Xu
Keyword(s):  
Water Quality ◽  
Anthropogenic Impacts ◽  
Oxygen Demand ◽  
Marine Ecosystems ◽  
Baseline Survey ◽  
Biological Traits ◽  
Ecological Features ◽  
Water Quality Status ◽  
Functional Units ◽  
Quality Status

Abstract Protozoan periphytons with their ecological features are considered as a robust bioindicator for bioassessment of both environmental stress and anthropogenic impacts in aquatic ecosystems. Keeping in view the ability of protozoan fauna for discriminating water quality status, a 1-year baseline survey was conducted using glass slides as an artificial substratum in coastal waters of Yellow sea, northern China. Four sampling sites (A–D) were selected from a clean area to a polluted station, and samples were collected monthly at a depth of 1 m. Environmental variables such as salinity, chemical oxygen demand (COD), dissolved oxygen (DO), soluble reactive phosphates (SRP), ammonium nitrogen (NH4-N) and nitrate nitrogen (NO3-N) were measured synchronically to compare with biotic factors. From a total of 144 identified protozoan species, 53 functional units (FUs) were proposed based on four biological traits: feeding type, resource of food supply, body size and movement type. These FUs represented a clear variability in spatial distribution among four study sites. The relative abundances of the sessile colonial bacterivores (e.g., BOS5s) showed an increasing trend from sites A to D. Multivariate analysis revealed that the patterns of the protozoan FUs showed a significant variation among four sampling sites, and were driven by the increasing levels of nutrients (e.g., NH4-N) and decreasing ranks of DO (P < 0.05). The bacterivorous FUs (e.g., BOS5s and BIS3v) were significantly positively related to NH4-N, while the vagile algivorous FUs (e.g., AIS8v, AOS3v, AOS6v) and sessile predators (e.g., RIS4s) were significantly positively correlated with transparency. These findings suggested that FUs of protozoan periphytons may be used as a useful bioindicators of water quality status in marine ecosystems.

scholarly journals Sustainable Marine Ecosystems: Deep Learning for Water Quality Assessment and Forecasting

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
A. Fernandez Gambin ◽  
E. Angelats ◽  
J. Soriano Gonzalez ◽  
M. Miozzo ◽  
P. Dini
Keyword(s):  
Water Quality ◽  
Deep Learning ◽  
Quality Assessment ◽  
Water Quality Assessment ◽  
Marine Ecosystems

scholarly journals Perbandingan Jenis dan Jumlah Echinodermata Di Perairan Pantai Krakal Gunung Kidul Yogyakarta Dan Pantai Pailus Jepara, Jawa Tengah

2019 ◽  
Vol 8 (2) ◽  
pp. 127-140
Author(s):  
Ardita Elok Mahendra Putri ◽  
Sunaryo Sunaryo ◽  
Hadi Endrawati
Keyword(s):  
Water Quality ◽  
Coral Reefs ◽  
Food Chain ◽  
Organic Material ◽  
Marine Ecosystems ◽  
Quality Parameters ◽  
Holothuria Scabra ◽  
Central Java ◽  
Holothuria Atra ◽  
Descriptive Method

Echinodermata merupakan biota yang dapat ditemukan hampir di semua ekosistem laut. Echinodermata cukup melimpah keberadaannya di kawasan terumbu karang, hal ini karena terumbu karang berperan sebagai tempat berlindung dan mencari makan bagi Echinodermata. Dalam rantai makanan, Echinodermata memiliki peranan sebagai pemakan seston atau detritus, dan merombak sisa bahan organik. Echinodermata juga berperan sebagai bioindikator parameter kualitas perairan. Penelitian ini bertujuan untuk mengetahui kelimpahan Echinodermata yang terdapat di Pantai Krakal, Gunung Kidul, Yogyakarta dan Pantai Pailus, Jepara, Jawa Tengah. Metode yang digunakan dalam penelitian ini yaitu metode deskriptif. Pengambilan sampel pada penelitian ini menggunakan metode transek kuadran dengan ukuran 1x1m. Hasil pengamatan di Pantai Krakal ditemukan 2 kelas dari filum Echinodermata, antara lain 3 species dari Kelas Ophiuroidea yaitu Ophiocoma erinaceus, Ophiocoma scolopendrina, Ophiarachna affinis, dan 3 species dari Kelas Echinoidea yaitu Echinometra viridis, Echinometra oblonga, dan Stomopneustes variolaris. Sedangkan jenis Echinodermata yang ditemukan di Pantai Pailus ditemukan 1 Kelas Echinodermata yaitu Holothuridea yang terdiri dari 3 spesies, yaitu Holothuria atra, Holothuria scabra, dan Holothuria leucospilota. Hasil penelitian menunjukkan kelimpahan individu tertinggi penelitian di Pantai Krakal adalah Ophiocoma scolopendrina (7,05 ind/m²),sedangkan kelimpahan individu tertinggi di Pantai Pailus adalah Holothuria scabra (2,13  ind/m²). Echinodermata is a biota that can be found almost in all marine ecosystems. Echinodermata quite abundant presence in the area coral reefs, because it serves as shelter and feed for Echinodermata. In the food chain, Echinodermata has a role as a seston eater or dentrite, and remodel the rest of the organic material. Echinodermata also serves as a bioindicator of water quality parameters. This study aims to determine the abundance of Echinodermata found in Krakal Beach, Gunung Kidul, Yogyakarta and Pailus Beach, Jepara, Central Java. The method used in this research was descriptive method. Sampling in this research used quadrant transect method with size 1x1m. The results of observation on Krakal Beach found 2 classes of Echinodermata phylum, among others 3 species of Ophiuroidea namely Ophiocoma erinaceus, Ophiocoma scolopendrina, Ophiarachna affinis, and 3 species of Echinoidea is Echinometra viridis, Echinometra oblonga, and Stomopneustes variolaris. While the type of Echinodermata found in Pailus Beach found 1 Class Echinodermata is Holothuridea consisting of 3 species, namely Holothuria atra, Holothuria scabra, and Holothuria leucospilota. The results showed the highest individual abundance of research on Krakal Beach was Ophiocoma scolopendrina (7,05 ind/m²), while the highest individual abundance in Pailus Beach was Holothuria scabra (2,13 ind/m²).

Can functional units of protozoan periphytons be used to evaluate ecological quality status under harmful algal blooms in marine ecosystems?

2021 ◽  
Author(s):  
Uroosa Uroosa ◽  
Syed Shabi Ul Hassan Kazmi ◽  
Mohammad Shafiqur Rahman ◽  
Henglong Xu
Keyword(s):  
Algal Blooms ◽  
Harmful Algal Bloom ◽  
Algal Species ◽  
Marine Ecosystems ◽  
Alexandrium Tamarense ◽  
Biological Traits ◽  
Ecological Quality ◽  
Ecological Quality Status ◽  
Functional Units ◽  
Quality Status

Abstract Based on biological traits the ecological quality status (EQS) under the pressure of two harmful algal bloom (HAB) species was evaluated using functional units (FUs) of protozoan periphytons. Five treatments with different concentrations of Alexandrium tamarense and Gymnodinium catenatum were designed as100, 102, 103, 104 and 105 cell ml− 1. A total of 21 FUs were identified from 25 test protozoan species. Vagile algivores with large sizes showed a decreasing trend towards high concentrations, while the vagile bacterivores and non-selectives with small sizes were dominating in concentrations (104 cell ml− 1) of both algal species. Ellipse test on pair-wise functional distinctness indices revealed a significant departure of test protozoan samples from an expected pattern when algal concentrations were over 104 cell ml− 1. Thus, it is suggested that FUs of protozoan periphyton assemblages may be used as a useful tool for evaluating the effects of HAB on ecological quality status in marine ecosystems.

scholarly journals Spatial extent of riverine flood plumes and exposure of marine ecosystems in the Tully coastal region, Great Barrier Reef

2009 ◽  
Vol 60 (11) ◽  
pp. 1109 ◽  
Author(s):  
Michelle Devlin ◽  
Britta Schaffelke
Keyword(s):  
Water Quality ◽  
Suspended Solids ◽  
Coastal Region ◽  
Marine Ecosystems ◽  
Quality Characteristics ◽  
Wet Season ◽  
Seagrass Meadows ◽  
Coral Sea ◽  
Plume Water ◽  
River Flood

Tully River flood plume monitoring data for 11 events (1994–2008) were used to determine what physical characteristics of the floods (size of flood, direction of plume movement, shape of hydrograph) most influence the flood plume water quality and areal extent. During some events, the maximum area influenced by the Tully flood plumes extended into the Coral Sea. Areal extents depended on wind direction and discharge volume, with large extents more likely during light or northerly winds. Strong gradients in water quality existed away from the Tully mouth during the wet season and the adjacent marine ecosystems were regularly exposed to land-derived material. Flood plumes were grouped into three plume types: primary, secondary and tertiary plumes, based on water-quality characteristics (suspended solids, coloured dissolved organic matter and chlorophyll). The number of reefs and seagrasses exposed to plume waters varied from year to year, and was dependent on the characteristics of the event. Over the 11 years, out of the major 37 reefs and 13 seagrass meadows identified in the Tully marine area, between 11 (30%) and 37 coral reefs (100%) and most of the seagrass meadows were inundated by either a primary or secondary plume every year.

Determining Water Depths for Monitoring Coastal Water Quality Using Multiple Functional Traits of Periphytic Protozoa in Marine Ecosystems

2018 ◽  
Vol 54 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Congcong Guo ◽  
Xiaoyun Bai ◽  
Mamun Abdullah Al ◽  
Mohammad Nurul Azim Sikder ◽  
Henglong Xu
Keyword(s):  
Water Quality ◽  
Functional Traits ◽  
Coastal Water ◽  
Marine Ecosystems ◽  
Coastal Water Quality ◽  
Water Depths
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