Comparisons of Zooplankton Community Structure between with- and without- Pesticide Applications on Rice Fields

Herbicide usage in rice fields over time may have a direct and indirect influence on the biodiversity of the fields. The impacts of herbicide usage on non-target organisms were assessed by examining the species richness and zooplankton density of two rice fields. One was 2.08 hectares in size and had been treated with pesticides during the sampling year (RF-PA). The second field, measuring 1.76 hectares, had received no pesticide treatment (RF-NPA). Every two weeks, zooplankton was quantitatively collected from ten sampling sites in each field. At each station, 20 L of measured water was filtered through a plankton net with a mesh size of 20 µm and preserved in 1% Lugol’s solution. The results revealed that RF-NPA and RF-PA had 112 and 88 species of zooplankton, respectively, with an abundance-based Jaccard index (Jabd) of 0.438. The total zooplankton density in RF-NPA was 24.4 ind./L, significantly higher than the 16.6 ind./L in RF-PA (p < 0.001). The Shannon-Wiener diversity index (H’) and evenness (J) were highest in RF-NPA at the second sampling (3.45 and 0.75, respectively). These results indicate that glyphosate application affects the diversity of species and density of zooplankton in rice fields.

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Kepelbagaian Artropod dalam Tanaman Padi Tradisional di Batang Lupar, Sarawak

Jurnal Teknologi ◽

10.11113/jt.v70.3535 ◽

2014 ◽

Vol 70 (6) ◽

Author(s):

Mohd Fitri Masarudin ◽

Maisarah Mohamad Saad

Keyword(s):

Insect Pests ◽

Diversity Index ◽

Analysis Data ◽

Shannon Index ◽

Rice Fields ◽

Rice Varieties ◽

Stages Of Growth ◽

Wiener Diversity Index ◽

Insect Predators ◽

Richness Index

The diversity of arthropod consists of pests and predators in rice fields were contribute to the biological control of crop pests at different stages of growth. The rice fields in Batang Lupar, Sarawak has diverse ecological conditions as well as presence of arthropod too. The study in MARDI research plot Batang Lupar in Sri Aman, Sarawak had been done on traditional rice varieties, Bubuk, Bali and Mamut by using sweeping net. The entire specimens were sorted out and classified into the smallest possible taxa. Statistical analysis were analysed by using Shanon-wiener Diversity Index, Evenness Shannon Index and Margalef Richness Index. A total of 272 individual arthropods had been collected and it consists of 7 order, 18 families and 23 species. Among of that 3 species are spiders, 9 species are insect pests and 11 species are insect predators. Analysis data for the diversity of arthropod has shown that there were no significantly different between three varieties, Bubuk, Bali and Mamut (P > 0.05). Besides that, diversity of the arthropod in Bali is higher than Bubuk and Mamut.

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How does mesh-size selection reshape the description of zooplankton community structure in coastal lakes?

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2014.10.015 ◽

2014 ◽

Vol 151 ◽

pp. 221-235 ◽

Cited By ~ 9

Author(s):

Marco Pansera ◽

Antonia Granata ◽

Letterio Guglielmo ◽

Roberta Minutoli ◽

Giacomo Zagami ◽

...

Keyword(s):

Community Structure ◽

Zooplankton Community ◽

Mesh Size ◽

Zooplankton Community Structure ◽

Coastal Lakes ◽

Size Selection

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Cyanobacteria bloom: selective filter for zooplankton?

Brazilian Journal of Biology ◽

10.1590/1519-6984.10013 ◽

2015 ◽

Vol 75 (1) ◽

pp. 165-174 ◽

Cited By ~ 3

Author(s):

NAST Mello ◽

PM Maia-Barbosa

Keyword(s):

Species Composition ◽

Hydrological Cycle ◽

Diversity Index ◽

Zooplankton Community ◽

Distribution Patterns ◽

Distinct Species ◽

Zooplankton Community Structure ◽

Β Diversity ◽

Cyanobacteria Blooms ◽

The Stability

The Ibirité reservoir is an urban and eutrophic environment, with regular occurrences of cyanobacteria blooms. The reservoir is warm monomict and remains stratified most of the year, circulating in the dry season (winter). During the hydrological cycle of October/07 to October/08 there were four scenarios with different environmental conditions, which influenced the structure of the zooplankton community, as confirmed in a previous study. Changes in the zooplankton community structure between the scenarios were studied, aiming at analyzing the stability and persistence of this community. The Spearman’s coefficient of correlation was used to measure the stability; the persistence was evaluated through a cluster analysis and changes in community composition were estimated by the "temporal" β diversity index. Considering the distribution patterns of abundance, the community was stable only in the transition between scenarios 1 and 2 (n = 30, r = 0.71, p = 0.00001), when there were no cyanobacteria blooms. The persistence of zooplankton between the scenarios was low, showing a distinct species composition for each scenario. The highest variations in species composition, observed by the values of temporal β diversity index, were the transitions between scenarios 3-0 (1.45) and 0-1 (1.05), and the lowest variations occurred in the transition between scenarios 1-2 (0.57). The results suggest that the cyanobacteria blooms at Ibirité reservoir are be acting as "selective filters", and are, thus, disturbances with sufficient ability to change the structure of the zooplankton community. Keywords Urban Reservoir, zooplankton, bloom of cyanobacteria, stability, persistence.

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ZOOPLANKTON COMMUNITY STRUCTURE AT MAJAKERTA ESTUARY AND ITS SURROUNDING WATERS, INDRAMAYU REGENCY, WEST JAVA PROVINCE

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v9i1.17919 ◽

2017 ◽

Vol 9 (1) ◽

pp. 91

Author(s):

Happy Widyarini ◽

Niken T.M. Pratiwi ◽

. Sulistiono

Keyword(s):

Community Structure ◽

Diversity Index ◽

Zooplankton Community ◽

Chemical Parameters ◽

Zooplankton Community Structure ◽

Fishery Resource ◽

Group 2 ◽

Station Group ◽

Physical And Chemical ◽

Group 1

Majakerta estuary and its surrounding waters have a high potential fishery resource which is commonly utilized by the community around the area. Fluctuation of physical and chemical parameters of the waters and fishery activities around the estuary can influence the existence of zooplankton. This study was conducted from December 2014 to May 2015. Samples of the zooplankton were collected monthly at four stations (consisted of sea, river and estuary areas). Based on the study, zooplankton in the Majakerta estuary and its surrounding waters consisted of six classes; i.e. Protozoa (11 genera), Crustaceae (4 genera, 1 nauplius stadia), and Rotifera (4 genera). A higher abundance was found at the sea (29025 ind./m3), while a lower abundance was at the river and estuary (7147 ind./m3 dan 7582 ind./m3). Based on the zooplankton diversity index, it can be inferred that the value was relatively low. There were two habitat groups, namely Station Group 1 (Station 1 and 2; river and estuary) and Station Group 2 (Station 3 and 4; sea) with influencing parameters such as transparency, pH, and salinity. Keywords: estuary, Majakerta, zooplankton, community structure

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Zooplankton Community Structure in Seagrass Ecosystem, Tongkaina Village, Bunaken Darat District, Manado City

JURNAL PERIKANAN DAN KELAUTAN TROPIS ◽

10.35800/jpkt.10.2.2019.24481 ◽

2019 ◽

Vol 10 (2) ◽

pp. 78

Author(s):

Brenda V.A. Lahiwu ◽

Rose O.S.E. Mantiri ◽

Ferdinand F. Tilaar ◽

Laurentius Th. X. Lalamentik ◽

Ruddy D. Moningkey ◽

...

Keyword(s):

Community Structure ◽

Distribution Pattern ◽

Aquatic Ecosystem ◽

Diversity Index ◽

Zooplankton Community ◽

Total Density ◽

Total Zooplankton ◽

Zooplankton Community Structure ◽

Seagrass Ecosystem ◽

Water Conditions

This study aims to determine the type and community structure of zooplankton in the Tongkaina seagrass aquatic ecosystem. Sampling was carried out at 3 location points using plankton nets. Plankton net was drawn along 50 meters from the sea towards the beach. There are 14 genera of zooplankton in the morning and 17 genera in the afternoon. The total density of zooplankton in the morning was 0.064 individual/l , and in the afternoon 0.114 individual/l. The highest density of zooplankton in the morning is Limacina and in the afternoon, Calanus. The zooplankton Diversity Index (H ') in the morning is 2.5907 and in the afternoon is 2.7321, indicating that the diversity level is less diverse. Morning uniformity (e) zooplankton index was 0.5614 and in the afternoon 0.5267, showed that the distribution pattern of zooplankton was moderate. The zooplankton dominance (C) index in the morning was 0.0783 and in the afternoon 0.0720. This shows that there is no dominant genus. Water conditions fall into the good category due to the temperature, salinity, and pH that are quite stable and are still within the limits of feasibility for zooplankton life. Keywords: Zooplankton, Community Structure, Seagrass, Tongkaina Waters.Keywords: Zooplankton, Community Structure, Seagrass, Tongkaina Waters ABSTRAKPenelitian ini bertujuan untuk mengetahui jenis dan struktur komunitas zooplankton yang ada di ekosistem perairan lamun Tongkaina. Pengambilan sampel dilakukan pada 3 titik lokasi dengan menggunakan jaring plankton.Plankton net ditarik sepanjang 50 meter dari laut ke arah pantai. Terdapat 14 genus zooplankton pada waktu pagi dan 17 genus pada waktu sore. Kepadatan total zooplankton pada waktu pagi hari 0.064 ind/l dan sore hari 0.114 ind/l. Kepadatan relatif zooplankton yang tertinggi pada pagi hari yaitu Limacina dan pada sore hari yaitu Calanus. Adapun Indeks Keanekaragaman (H’) zooplankton pada pagi hari sebesar 2.5907 dan sore hari sebesar 2.7321, menunjukkan bahwa tingkat keanekaragaman kurang beragam. Indeks Keseragaman (e) zooplankton pada pagi hari sebesar 0.5614 dan pada sore hari 0.5267, menunjukkan bahwa pola sebaran zooplankton sedang. Indeks Dominansi (C) zooplankton pada waktu pagi hari sebesar 0.0783 dan sore hari 0.0720. Hal ini menunjukkan bahwa tidak ada genus yang dominan. Kondisi perairan masuk dalam kategori baik dikarenakan suhu, salinitas dan pH cukup stabil dan masih berada dalam batas kelayakan bagi kehidupan zooplankton.Kata kunci: Zooplankton, Struktur Komunitas, Lamun, Perairan Tongkaina.

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The Effect of Hydrological Connectivity on the Zooplankton Structure in Floodplain Lakes of a Regulated Large River (the Lower Vistula, Poland)

Water ◽

10.3390/w11091924 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1924 ◽

Cited By ~ 2

Author(s):

Napiórkowski ◽

Bąkowska ◽

Mrozińska ◽

Szymańska ◽

Kolarova ◽

...

Keyword(s):

Diversity Index ◽

Zooplankton Community ◽

Flood Pulse ◽

Large River ◽

Intermediate Disturbance Hypothesis ◽

Floodplain Lakes ◽

Zooplankton Community Structure ◽

Growing Seasons ◽

Vistula River ◽

Α Diversity

The zooplankton community structure and diversity were analysed against the gradient of floodplain lakes connectivity and water level under different flood-pulse dynamics in the Vistula River. The lakes differed in terms of hydrology, among others in the degree/type of their connection with the river (permanent, temporary and no connection). The study was conducted during the growing seasons in the years 2006–2013 and involved the lower Vistula River and three floodplain lakes: isolated, transitional and connected. Water samples were collected biweekly from April to September. Zooplankton was the most diverse and abundant in the transitional lake (the highest Shannon α-diversity index H’ and Pielou’s evenness index J’). The gentle washing of the lakes might have stimulated the development of zooplankton in accordance with the Intermediate Disturbance Hypothesis. The diversity and density of zooplankton were higher in the connected lake compared to the isolated one. We confirmed the hypothesis that zooplankton should be more abundant and diverse in floodplain lakes connected with the river (or transitional) than in isolated ones. Zooplankton analyses indicated that hydrological conditions (flood-pulse regime) contributed most substantially to zooplankton diversity and density in the floodplain lakes of the lower Vistula valley.

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ZOOPLANKTON COMMUNITY STRUCTURE AT MAJAKERTA ESTUARY AND ITS SURROUNDING WATERS, INDRAMAYU REGENCY, WEST JAVA PROVINCE

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v9i1.17919 ◽

2017 ◽

Vol 9 (1) ◽

pp. 91-103 ◽

Cited By ~ 1

Author(s):

Happy Widyarini ◽

Niken T.M. Pratiwi ◽

. Sulistiono

Keyword(s):

Community Structure ◽

Diversity Index ◽

Zooplankton Community ◽

Chemical Parameters ◽

Zooplankton Community Structure ◽

Fishery Resource ◽

Group 2 ◽

Station Group ◽

Physical And Chemical ◽

Group 1

Majakerta estuary and its surrounding waters have a high potential fishery resource which is commonly utilized by the community around the area. Fluctuation of physical and chemical parameters of the waters and fishery activities around the estuary can influence the existence of zooplankton. This study was conducted from December 2014 to May 2015. Samples of the zooplankton were collected monthly at four stations (consisted of sea, river and estuary areas). Based on the study, zooplankton in the Majakerta estuary and its surrounding waters consisted of six classes; i.e. Protozoa (11 genera), Crustaceae (4 genera, 1 nauplius stadia), and Rotifera (4 genera). A higher abundance was found at the sea (29025 ind./m3), while a lower abundance was at the river and estuary (7147 ind./m3 dan 7582 ind./m3). Based on the zooplankton diversity index, it can be inferred that the value was relatively low. There were two habitat groups, namely Station Group 1 (Station 1 and 2; river and estuary) and Station Group 2 (Station 3 and 4; sea) with influencing parameters such as transparency, pH, and salinity. Keywords: estuary, Majakerta, zooplankton, community structure

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The Influence of Water Physical Chemical Quality on the Zooplankton Community Structure in the Upstream Citarum River of West Java Province

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2021/v13i130258 ◽

2021 ◽

pp. 37-47

Author(s):

Seldatia Syifani Alhafidzoh ◽

Zahidah Hasan ◽

. Sunarto ◽

Heti Herawati

Keyword(s):

Diversity Index ◽

Zooplankton Community ◽

Chemical Quality ◽

Chemical Parameters ◽

Dominance Index ◽

West Java ◽

Zooplankton Community Structure ◽

Physical Chemical ◽

Physical And Chemical Parameters ◽

Physical And Chemical

The Citarum River is the longest river in West Java Province which is used for various human activities to produce a load of waste input into water bodies which cause changes in the physical and chemical parameters of the waters that will affect the life of aquatic organisms that live in it, one of which is zooplankton. Zooplankton can be used as a water bioindicator because it has a high level of sensitivity to pollution, especially in freshwater. The purpose of this research is to determine the physical-chemical quality of the water in the Citarum River and its influence on the structure of the zooplankton community in this environment. The research was carried out from August 2020 until October 2020 with a purposive sampling method. Sampling was carried out at 5 stations with 6 repetitions every 1 week. The parameters observed were physical and chemical parameters of the waters, an abundance of zooplankton, diversity index, and dominance index. The results showed that the composition of zooplankton in the Upstream Citarum River was 15 genus consisting of 2 phyla. The abundance of zooplankton obtained ranged from 21 - 51 individuals/L. The Simpson diversity index (D) obtained a range between 0.59 - 0.73 for the high category. The dominance index obtained ranges from 0.27 to 0.41 for the low category. Dissolved oxygen and pH are the parameters that most influence the presence of most of the identified zooplankton orders.

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Macroinvertebrate fauna associated with Pistia stratiotes and Nymphoides indica in subtropical lakes (south Brazil)

Brazilian Journal of Biology ◽

10.1590/s1519-69842007000300015 ◽

2007 ◽

Vol 67 (3) ◽

pp. 499-507 ◽

Cited By ~ 20

Author(s):

EF. Albertoni ◽

LJ. Prellvitz ◽

C. Palma-Silva

Keyword(s):

Aquatic Macrophyte ◽

Diversity Index ◽

Mesh Size ◽

Dry Weight ◽

Pistia Stratiotes ◽

Subtropical Lakes ◽

Taxa Richness ◽

Wiener Diversity Index ◽

Successional Stages ◽

Nymphoides Indica

This study was carried out at the Biguás and Polegar lakes, both small environments but at different successional stages. The main objective was to characterize the macroinvertebrate community associated to the aquatic macrophyte stand in each lake in order for this community, the environmental conditions and their water quality to interact. The samples were taken in 2003. The abiotic variables of N and P totals, the temperature, electrical conductivity, pH and dissolved oxygen, as well as the determined clorophyll a concentration were measured. Macroinvertebrates were sampled with a 500 µ mesh size net, separated under a stereomicroscope and identified at the lowest possible taxonomic level, and their densities were shown as the number of individuals per 100 g of macrophyte dry weight. The Shannon-Wiener Diversity Index (H'), Pielou evenness (J), frequency of occurrence, abundance and taxa richness were calculated for each invertebrate community. The Lago dos Biguás is undergoing a process of eutrophication and during the study presented a large Pistia stratiotes stand. The Lago Polegar is oligotrophic and had only a small Nymphoides indica bankwe. The macrophyte associated invertebrate communities in each lake were considered significantly different (p < 0.05). Sixty seven taxa were found for the Lago dos Biguás and 32 for the Lago Polegar. For both lakes, most of the taxa were considered rare, with a low dominance in a few months. The taxa with highest densities at Lago dos Biguás were Chironomidae, Daphniidae and Cyclopidae, and Oligochaeta, Chironomidae and Coenagrionidae for Lago Polegar.

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Western Pacific Zooplankton Community along Latitudinal and Equatorial Transects in Autumn 2017 (Northern Hemisphere)

Diversity ◽

10.3390/d13020058 ◽

2021 ◽

Vol 13 (2) ◽

pp. 58

Author(s):

Yi Long ◽

Md Abu Noman ◽

Dawei Chen ◽

Shihao Wang ◽

Hao Yu ◽

...

Keyword(s):

Chlorophyll A ◽

Diversity Index ◽

Zooplankton Community ◽

Western Pacific ◽

Zooplankton Abundance ◽

Oithona Similis ◽

Subtropical Countercurrent ◽

Wiener Diversity Index ◽

Zooplankton Communities ◽

The Western Pacific

During the autumn of 2017, a study was conducted to assess the zooplankton community composition in three sections (two latitudinal, going from Japan to the equator, and one longitudinal on the equator) of the Western Pacific Ocean. A total of 384 species of zooplankton adults and 21 groups of zooplankton larvae were identified, with copepods being the predominant taxon. The common dominant species across the three sections were Acrocalanus gibber, Canthocalanus pauper, Oithona similis, Paracalanus aculeatus, and Oncaea venusta. Zooplankton abundance was the highest in the equator section, with a mean abundance of 258.94 ± 52.57 ind./m3. Comparatively, a low abundance was recovered from the Subtropical Countercurrent (STCC) region, while the highest abundance holding stations were located in the eastern equatorial and North Equatorial Countercurrent (NECC) regions. Pearson’s correlation, canonical correspondence analysis, and other methods were used to analyze the relationship between environmental factors and zooplankton. We found that the Shannon–Wiener diversity index and Pielou’s uniformity index were significantly correlated (p < 0.05) with concentrations of nitrite and chlorophyll a. The distribution of zooplankton was also limited by nutrients, chlorophyll a, and dissolved oxygen. In addition, we reveal differences in the abundance of species in the equatorial and latitudinal seas. We found that not only temperature and nutrient salinity, but also ocean currents and the movement of water masses, influence the distribution of zooplankton communities in the Western Pacific.

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