scholarly journals Zooplankton of mountain and lowland waterbodies of Northwestern India

2018 ◽  
Vol 322 (1) ◽  
pp. 66-83
Author(s):  
L.F. Litvinchuk
Keyword(s):  
Diversity Index ◽  
Zooplankton Biomass ◽  
Species Number ◽  
Species Diversity Index ◽  
Northwestern India ◽  
Zooplankton Density ◽  
Density And Biomass ◽  
Zooplankton Communities ◽  
First Time ◽  
Lowland Lakes

In 2013–2015, 9 waterbodies situated in mountain and lowland regions of Northwestern India were studied. 46 species of zooplankton organisms were revealed, among them 18 Rotifera species, 20 Cladocera, 8 Copepoda, and 1 species of Anostraca. For this part of India, it was the first time detected 8 Rotifera species, 5 Cladocera, and 2 Copepoda. Cosmopolites and Paleotropic species were registered in all waterbodies studied in the Himalayans and lowland India. Palearctic and Holarctic species — in the Himalayans only. Tropic species were found in lowland India only. Species number and zooplankton species diversity index were low. Zooplankton density was relatively high in one from four mountain lakes and in all lowland waterbodies (99–487 thousands ind./m3). Zooplankton biomass was low (0.04–8.00 g/m3) in both mountain and lowland lakes, in exception two lowland lakes with wind onset and overwintering place for large birds. Rotifera dominated by biomass only in mountain region. Cladocera predominated in zooplankton density and biomass in majority of studied waterbodies. This group was represented by coastal and macrophyte forms which are usual for shallow waterbodies. Copepoda were abundant in five studied waterbodies and basically were represented by Cyclopoida. Calanoida group (Diaptomidae) was revealed in only one lowland lake located in a desert. Macrofiltrators represented the main part of zooplankton trophic structure. Microphages and predators subdominated in zooplankton communities.

scholarly journals Ecological investigation of zooplankton abundance in the river Haraz, northeast Iran: Impact of environmental variables

2011 ◽  
Vol 63 (3) ◽  
pp. 785-798 ◽  
Author(s):  
Naser Jafari ◽  
Mohamad Nabavi ◽  
Moslem Akhavan
Keyword(s):  
Diversity Index ◽  
Biological Indicator ◽  
Zooplankton Abundance ◽  
Species Diversity Index ◽  
Haraz River ◽  
Site Variation ◽  
One Year ◽  
First Time ◽  
River Site

The influence of physicochemical properties of Haraz river on its zooplankton composition and abundance were investigated at three sites for one year between August 2009 and July 2010. The present study records for the first time the aspects of zooplankton diversity and composition in relation to the physicochemical environment of the Haraz river. Only three groups of zooplankton were found: Rotifera with eighteen genera; Cladocera with nine and Copepoda with six genera. Rotifera was the predominant group (64.89%), followed by Cladocera (19.62%) and Copepoda (15.32%). Upstream, the abundance was 805 individuals/m3, while it varied from 922 to 1126 ind/m3 downstream. Alkaline pH and nutrients were the main environmental factors which affected zooplankton abundance in the river. Site variation in dominance, diversity, evenness and richness were calculated. The study revealed that the presence of certain species, such as Lepadella sp., Mesocyclops sp., Polyarthra sp. and Brachionus sp. is considered to be a biological indicator for eutrophication. The calculated Jack1 values of sites 1 to 3 were 7.624, 16.426 and 19.221, respectively. The Shannon-Wiever species diversity index (H?) values were also different for all the three sites viz., site 1 (1.992), site 2 (1.21) and site 3 (2.48). Simpson?s dominance index (H) value was highest at site 1 (0.692), indicating maximum dominance, whereas at site 3 dominance was the lowest (0.227) and diversity was the highest. Overall, our results showed that changes in the water quality of the river Haraz have considerable effects on the composition of zooplankton assemblages that can potentially affect the functioning of these ecosystems.

scholarly journals HUBUNGAN KUANTITATIF FITOPLANKTON DAN ZOOPLANKTON PERAIRAN SUAKA PERIKANAN GILI RANGGO TELUK SEREWE LOMBOK TIMUR

2013 ◽  
Vol 13 (1) ◽  
Author(s):  
Lalu Japa, Suripto Dan I Gde Mertha
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Spearman Correlation ◽  
Species Diversity Index ◽  
Quantitative Correlation ◽  
Zooplankton Communities ◽  
Plankton Species

ABSTRAKEmpat belas sampel air laut diamati komunitas planktonnya. Sampel diambil di kawasan perairansuaka perikanan Gili Ranggo Teluk Serewe Lombok Timur, menggunakan jaring plankton bermatajaring 20 mikron. Pengamatan dan identifikasi spesies plankton dilaksanakan di LaboratoriumBiologi Dasar UPT-MIPA Universitas Mataram. Kepadatan setiap jenis fitoplankton danzooplankton ditentukan berdasarkan jumlah individu per liter air. Indeks keanekaragaman jenisfitoplankton dan zooplankton ditentukan berdasarkan “Indeks Shannon-Wienner”. Selanjutnya,hubungan kuantitatif antara fitoplankton dan zooplankton ditentukan dengan menggunakan“Korelasi Jenjang Spearman”. Total plankton teridentifikasi adalah 123 spesies meliputi 82 spesiesfitoplankton dan 41 spesies zooplankton. Komunitas fitoplankton didominasi oleh spesies dari familiBacillariophyceae (diatom), yaitu sebanyak 75 spesies. Tujuh spesies lainnya adalah anggota darifamily Dinophyceae (dinoflagellata). Sedangkan komunitas zooplankton di perairan suaka perikananGili Ranggo Teluk Serewe Lombok Timur didominasi oleh spesies dari genus Tintinnopsis. Nilaiindeks keanekaragaman jenis fitoplankton dan zooplankton termasuk dalam kategorikeanekaragaman sedang. Hubungan kuantitatif fitoplankton dengan zooplankton pada tarafsignifikansi 5% dengan tujuh pasang jenjang, diperoleh hasil rs Hitung lebih kecil dari rs Tabel (0,643 <0,857), artinya bahwa tidak terdapat korelasi positif antara fitoplankton dan zooplankton.Kata-kata kunci: kuantitatif, fitoplankton, zooplankton, suaka perikananABSTRACTFourteen of 50 ml volume bottle plankton net collecting samples were observed for the community ofplankton (phytoplankton and zooplankton) of the fish sanctuary of Gili Ranggo (Serewe Bay) eastLombok. Samples observation and plankton identification were done at the Laboratory of Biology,UPT-MIPA University of Mataram. Density or abundant of each plankton species was determinedbased on the number of individual per liter. Shannon-Wienner Diversity Index was applied fordetermining the species diversity index. Furthermore, the “Spearman Correlation” was also appliedfor analyzing the quantitative correlation of phytoplankton and zooplankton. Total of 50 generacontaining 123 species of plankton were fully identified. This study fully identified of 82 species ofphytoplankton, the members of both Dynophyceae (dinoflagellates) and Bacillariophyceae (diatom)families, and 41 species of zooplankton. The fish sanctuary of Gili Ranggo, Serewe Bay wasdominated by the member of Bacillariophyceae family. The 41 species of zooplankton is dominatedby the species of the genus Tintinnopsis. Both phytoplankton and zooplankton communities have ahigh species diversity index category. Quantitative correlation of phytoplankton and zooplankton ata seven pair and significant of 5%, is rs count less than rs Table (0.643 < 0.857). This means, there wasno possitive correlation between the present of phytoplankton and zooplankton communities.Key Words: quantitative, phytoplankton, zooplankton, fish sanctuary

scholarly journals Avaliação do efeito de borda da Reserva Biológica de Pindorama, SP

2015 ◽  
Vol 10 (4) ◽  
pp. 01 ◽  
Author(s):  
M. T. V. N. Abdo ◽  
S. V. Valeri ◽  
A. S. Ferraudo
Keyword(s):  
Edge Effect ◽  
Diversity Index ◽  
Similarity Index ◽  
Basal Area ◽  
Lower Percentage ◽  
Species Number ◽  
Effect Evaluation ◽  
Importance Value ◽  
Species Diversity Index ◽  
Biological Reserve

<p>Caracterizou dois fragmentos de floresta estacional semidecidual da Reserva Biológica de Pindorama, SP. Em 65 parcelas de 400 m<sup>2</sup> avaliou-se: grau de infestação na parcela, distância da borda, altura, área basal e grau de infestação das quatro maiores árvores e num quadrante sorteado avaliou-se solo, a altitude, o número de espécies, o número, a área basal e a altura de todos indivíduos arbóreos com diâmetro a altura do peito (DAP) ≥ a 5 cm e a fitossociologia. O agrupamento hierárquico dividiu as parcelas em dois grupos onde determinou-se valores médios das variáveis, Índices de diversidade de espécies (H’) e Coeficiente de equabilidade (J) e a similaridade entre os grupos com o Índice de similaridade de Jaccard (ISJ). O agrupamento hierárquico, k-médias e componentes principais caracterizaram grupos de parcelas semelhantes e as variáveis com maior poder de discriminação foram: altura das quatro maiores árvores, número de indivíduos por parcelas, área basal total, infestação por parcelas, número de espécies. No Grupo 2 houve maior infestação de plantas invasoras e lianas nas quatro maiores árvores e menor distância das parcelas da borda com mais parcelas sob efeito de borda (31,75%). O Grupo 1  teve menor porcentagem  de parcelas sob efeito de borda (22,22%). </p><p align="center"><strong><em>Edge effect evaluation of Pindorama Biological Reserve-SP</em></strong></p><p><strong>Abstract</strong><strong>:</strong> Edge effect evaluation in two forest remnants in the Biological Reserve Pindorama, SP, in 65 plots of 400 m<sup>2</sup>, using data of: degree of infestation in the plot, distance from edge, height, basal area and degree of infestation of the four largest trees. In a random quadrant were evaluated soil and altitude, species number, number, basal area and height of trees with diameter at breast height (DBH) ≥ 5 cm and phytosociological describers: density absolute and relative, relative dominancy, frequency relative and absolute , importance value, species diversity index (H '), evenness coefficient (J) and similarity index (ISJ). The hierarchical clustering gathered parcels into two groups with specific values of the variables H’ an J and ISJ between them. The k-means and principal components analyses characterized similar plots groups and the variables with greater power of discrimination were: height of the four largest trees, number of individuals in plots, total basal area, infestation in plots, number of species. Group 2, closer to the edge had  higher infestation of weeds and vines in the four largest trees 31,75% plots under edge effect  and Group 1 had a lower percentage of plots under edge effect (22.22%).</p>

scholarly journals Zooplankton communities in three adjacent softwater lobelia lakes of slightly differentiated morphology and trophic state

2017 ◽  
Vol 17 (4) ◽  
pp. 207-214 ◽  
Author(s):  
Natalia Kuczyńska-Kippen ◽  
Piotr Klimaszyk ◽  
Ryszard Piotrowicz
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Ecological Status ◽  
Zooplankton Community ◽  
Taxonomic Structure ◽  
Environmental Predictors ◽  
Species Diversity Index ◽  
Zooplankton Community Structure ◽  
Lobelia Lakes ◽  
Zooplankton Communities

Abstract The paper presents the results of an investigation of physical-chemical features of water as well as rotifer and crustacean abundance and diversity measures, relating to the taxonomic richness and species diversity index, in three lobelia lakes differing in trophic status and morphometric features. The main purpose of this study was to establish the diversity of zooplankton communities in the open water area of lobelia lakes, including extracting species common for each lake and also to find environmental predictors which are responsible for the development of zooplankton communities. Despite the fact that the three studied lakes are of the same origin, located in the same vicinity and have generally similar environmental factors, zooplankton community structure revealed a great variation in reference to species diversity (only ca. 20% of the species were common for all lakes) and particularly in inhabiting species. Obrowo Lake had the most diverse assemblages of both rotifers and crustaceans compared to Modre and Pomysko lakes. In the taxonomic structure species that are rare for the Polish fauna, such as e.g. Holopedium gibberum and Heterocope appendiculata, occurred. Even though the examined lobelia lakes are ecosystems that undergo varying human-induced impacts, they still remain taxonomically very variable aquatic ecosystems, containing rare species of very high ecological status. The observed symptoms of deterioration of water quality, reflected in the zooplankton biocoenotic features, showed that the best conditions were attributed to Obrowo Lake in comparison with the two remaining lakes – Modre and Pomysko. Total nitrogen and chlorophyll a concentration were decisive for the distribution of zooplankton species in Pomysko and Obrowo lakes, while in case of Modre lake water reactivity and conductivity were of higher impact.

scholarly journals Diversity and Abundance of Copepods in Taninthayi Coastal Waters, Myanmar

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Khin May Chit Maung ◽  
Thaung Htut ◽  
Ei Thal Phyu ◽  
Zaw Myo Hein ◽  
Nyo Nyo Tun
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Coastal Waters ◽  
Correlation Matrix ◽  
Diversity Index ◽  
Species Number ◽  
Species Diversity Index ◽  
Evenness Index ◽  
Richness Index ◽  
Ecosystem Survey

Diversity and abundance of copepods occurring in Taninthayi coastal waters were studied and analyzed from the samples collected by R/V DR. FRIDTJOF NANSEN during the Myanmar ecosystem survey 2018. Seventy-nine copepods species belonging to calanoids (51 species), cyclopoids (21 species), and harpacticoids (7 species) were identified in the copepods community of Taninthayi coastal waters. Copepods species number and density were high at the nearshore stations (Sts 799, 842, 788) and low at the offshore stations (Sts 846, 802, 823). The resulted diversity index values of copepods were varied from 2.61 to 3.78 in species diversity index (H'), from 0.89 to 0.97 in the evenness index (E'), and from 2.51 to 7.50 in species richness index (D'). According to the correlation matrix, the abundance of copepods was positively correlated with temperature, chlorophyll a and fluorescence, and negatively correlated with salinity and oxygen.

Carabidae of Barnaul city parks: ecological characteristics and species composition

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Similarity Index ◽  
Life Forms ◽  
Ground Beetles ◽  
Forest Steppe ◽  
Ecological Groups ◽  
Dominant Group ◽  
Species Diversity Index ◽  
Steppe Species

<p>Anthropogenic impact on the population of ground beetles leads to a change in their numbers, structure of dominance, density, species composition, spectrum of life forms. This makes the beetles Carabidae a convenient and informative bioindicator of the ecological state of biocenoses. The material for this work was the Carabidae collections conducted in June-August 2016-2017 in the park zone of different regions of Barnaul, differing in location, area, hydrological regime, vegetation cover, purpose and anthropogenic load. When processing the material, the quantitative, species and generic composition of the carabidae was determined, calculations were made for such indicators as the Berger-Parker dominance index, the Shannon species diversity index (Hs), and the Jacquard species similarity index. The fauna (Coleoptera, Carabidae) of the park zone of Barnaul is represented by 55 species belonging to 20 genera. The dominant group is represented by species belonging to steppe, forest and polyzonal groups. Forest-steppe species of ground beetles as dominants have not been identified in any of the investigated territories. The greatest variety of ecological groups was noted on the territory of the Yubileyny рark, which is explained by the presence of zones with various microclimatic conditions, the presence of a birch grove that flows through the park with the Pivovarka River, and a wide log in the park. Registered species belong to eight groups of life forms belonging to two classes - zoophagous and myxophytophagous. On the numerical and species abundance, zoophages predominate. The spectrum of life forms corresponds to the zonal spectrum characteristic of the forest-steppe zone.</p><p> </p>

scholarly journals Carbon stocks of homestead forests have a mitigation potential to climate change in Bangladesh

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tarit Kumar Baul ◽  
Tajkera Akhter Peuly ◽  
Rajasree Nandi ◽  
Lars Holger Schmidt ◽  
Shyamal Karmakar
Keyword(s):  
Species Diversity ◽  
Stand Structure ◽  
Diversity Index ◽  
Carbon Stocks ◽  
Small Scale ◽  
Species Diversity Index ◽  
C Stocks ◽  
Homestead Forests ◽  
C Stock ◽  
Low Altitude

AbstractA total of 176 homestead forests at three altitudes in the Chittagong Hill Tracts, Bangladesh were randomly surveyed to estimate carbon (C) stocks and how stand structure affects the biomass C. All woody vegetations were measured, and litter and soil (0–30 cm depth) were sampled. The tree biomass C stock in the top two altitude forests was up to 37–48% higher than in low altitude, owing to significantly higher tree density and species diversity. An increase in species diversity index by one unit increased the biomass stock by 23 Mg C ha−1. The C stock of litterfall in low altitude forests was 22–28% higher than in the top two altitude due to the deposition of litters downslope and deliberate use of mulch for soil improvement and conservation, resulting in up to 5% higher total soil C. The topsoil C was 10–25% higher than the deeper soil, depending on the altitude. The forest stored 89 Mg C ha−1, indicating a potential for C sequestration in trees outside forest. This study would help policymakers to strengthen the recognition of small-scale forests for mitigation in REDD + (reducing emissions from deforestation and forest degradation, the role of conservation, sustainable management of forests, and enhancement of forest carbon stocks) and support owners through C credits from sustainably managed forests.

Carbon stock assessment through above-ground biomass of trees at different forest composition in Mt. Malindawag, Lubilan, Naawan, Misamis Oriental, Philippines

2021 ◽  
Vol 11 (01) ◽  
pp. 100-113
Author(s):  
M. G. Origenes ◽  
R. L. Lapitan
Keyword(s):  
Carbon Stock ◽  
Diversity Index ◽  
Stock Assessment ◽  
Mixed Forest ◽  
Forest Composition ◽  
Above Ground Biomass ◽  
Plantation Forest ◽  
Species Diversity Index ◽  
Ground Biomass ◽  
Number Of Individuals

It is documented that the amounts of carbon stored and its level of degradation in different forests compositions and different types of forest is mostly unknown, Philippines is no exemption as little was done in some places of this country. This study was conducted to assess carbon stock through above ground biomass of trees at different forest composition in Mt. Malindawag. There were three (3) 20m x 20m sample plots (quadrats) (400m2 equivalent to 0.04 ha) established as replicate plots provided with 50m intervals. Forest composition such as the Agroforestry area, mixed forest area and the Plantation forest were assessed in terms of the number of individuals, number of species, diameter, and height to calculate the biomass, tree biomass density as well as the carbon stock. Based on the results of the study conducted in different forest compositions of Mt. Malindawag, plantation forest has the highest carbon stocking rate. However, these results were not significantly different from the other forest composition. This was associated with a higher accumulated diameter, which resulted in higher biomass and eventually carbon stock. Species found in this forest composition are productive and have lesser number of individuals; therefore, there is lesser competition for resources such as light. Such a mechanism might contribute to the higher biomass and carbon stock. However, the result may not be right to other areas due to uncontrollable factors, anthropogenic and environmental factors. Hence, it is recommended to have further studies on areas where trees have similar age, species diversity index as well as stand development and site productivity for a more accurate and quantifiable carbon stock.

scholarly journals Sampling a biodiversity hotspot: the orchid-bee fauna (Hymenoptera: Apidae) of Tarapoto, northeastern Peru, the richest and most diverse site of the Neotropics

2014 ◽  
Vol 74 (3 suppl 1) ◽  
pp. s33-s44 ◽  
Author(s):  
A Nemésio ◽  
C Rasmussen
Keyword(s):  
Diversity Index ◽  
Species Group ◽  
Biodiversity Hotspot ◽  
Single Site ◽  
Additional Species ◽  
Orchid Bees ◽  
Orchid Bee ◽  
Wiener Diversity Index ◽  
First Time

The orchid-bee fauna of the region of Tarapoto, northeastern Peru, was surveyed using seventeen different scents as baits to attract orchid-bee males. Six hundred and fifty-nine males belonging to 41 species were actively collected with insect nets during 120 hours in late July and early August, 2012. Euglossa dressleriMoure, 1968, Euglossa laurensiBembé, 2008, and Euglossa maculilabrisMoure, 1968, three species belonging to the Euglossa cybelia species-group, are here reported for Peru for the first time. Previous sporadic and unpublished samplings in the area recorded eleven additional species. With 53 species, the region of Tarapoto can be considered the richest single site in the Neotropics for orchid bees. Diversity, estimated with the Shannon-Wiener diversity index (H′ = 3.02), was also the highest ever recorded for orchid bees.

scholarly journals Tintinnids (Ciliophora, Oligotrichea) within power plant discharge and marine protected areas in Masinloc-Oyon Bay

Check List ◽  
2021 ◽  
Vol 17 (6) ◽  
pp. 1533-1539
Author(s):  
Jane Abigail Santiago ◽  
Ma Carmen Ablan-Lagman
Keyword(s):  
Power Plant ◽  
Protected Areas ◽  
Marine Protected Areas ◽  
Diversity Index ◽  
Thermal Power ◽  
The Philippines ◽  
Field Sampling ◽  
Species Diversity Index ◽  
Philippine Sea ◽  
West Philippine Sea

There are only five studies on tintinnids of the Philippines. We present a checklist of tintinnids (Ciliophora, Oligotrichea) from Masinloc-Oyon Bay, Province of Zambales, West Philippine Sea. Masinloc-Oyon Bay is a unique in having both marine protected areas and a coal-fired thermal power plant within the same bay. Field sampling was performed in July 2017, which recorded 10 species belonging to one order, six families, and seven genera. Station 1 inside the power plant&rsquo;s outfall had the lowest diversity, whereas the stations within marine protected areas had a relatively higher species diversity index. Our new data are the first records of tintinnid species in Masinloc-Oyon Bay. These records add to the regional checklist of the Philippine Sea.

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