Species composition and distribution patterns of the family Corycaeidae Dana, 1852 (Copepoda: Cyclopoida) in the middle Adriatic Sea

Seagrass beds and their associate biota are very important in maintaining the balance of coastal ecosystems. Samuh Beach is one of seagrass ecosystem area in Bali Island. One of the biota that exists in the seagrass ecosystem in Samuh Beach is Echinodermata. Since the limited information and the complex activities at Samuh Beach make research about associations of Echinodermata with seagrass, this research seems become important to be conducted. This study was aimed to determine the density of species, species composition, and distribution patterns of lamun and Echinodermata in the coastal waters of Samuh beach. Data analysis was performed by using density type, species composition, dispersion index of morisita and association. The average seagrass density of each station in Samuh coastal waters ranged from 156-246 stands/m2 and the highest density of Echinoderms is Diadema setosum in each station. The species composition of seagrass in Samuh beach comprises five species of seagrass namely: Enhalus acoroides, Halophila ovalis, Thalassodendron ciliatum, Cymodocea serrulata and Syringodium isoetifolium. The composition of Echinodermata species that found amounted to 13 species of Echinodermata namely: Diadema setosum, Amphiura sp., Archaster typicus, Asterias sp., Mespilia globulus, Tripneustes gratilla, Pseudoboletia maculata, Protoreaster nodusus, Ophiactis resillens, Ophiopteris antipodum, Centrostephanus rodgersii, Echinothrix and Echinothrix mathei. Based on the calculation of morisita, seagrass and Echinodermata Index in Samuh Beach was spread uniformly and clumped. The result of association analysis showed that there were positive association, negative association and association with no relation between seagrass and Echinodermata in Samuh Beach.

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Species composition and distribution patterns of the Mangrove forests of the Western Niger Delta, Nigeria

African Geographical Review ◽

10.1080/19376812.2021.1947333 ◽

2021 ◽

pp. 1-15

Author(s):

Ufuoma Efe Akpovwovwo ◽

Adeniyi Gbadegesin

Keyword(s):

Species Composition ◽

Niger Delta ◽

Distribution Patterns ◽

Mangrove Forests ◽

Species Composition And Distribution

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Diversity and Distribution Patterns of Hard Bottom Polychaete Assemblages in the North Adriatic Sea (Mediterranean)

Diversity ◽

10.3390/d12100408 ◽

2020 ◽

Vol 12 (10) ◽

pp. 408

Author(s):

Barbara Mikac ◽

Margherita Licciano ◽

Andrej Jaklin ◽

Ljiljana Iveša ◽

Adriana Giangrande ◽

...

Keyword(s):

Adriatic Sea ◽

Benthic Communities ◽

Structural Similarity ◽

Distribution Patterns ◽

Northern Adriatic Sea ◽

Environmental Pressures ◽

Northern Adriatic ◽

The North ◽

The Family ◽

Abundance And Diversity

The knowledge on the hard bottom polychaete assemblages in the Northern Adriatic Sea, a Mediterranean region strongly affected by environmental pressures, is scarce and outdated. The objective of this paper was to update the information on polychaete diversity and depict their patterns of natural spatial variation, in relation to changes in algal coverage at increasing depth. Hard bottom benthos was quantitatively sampled by scraping off the substrate from three stations at Sveti Ivan Island (North Adriatic) at three depths (1.5 m, 5 m and 25 m). Polychaete fauna comprised 107 taxa (the majority of them identified at species level) belonging to 22 families, with the family Syllidae ranking first in terms of number of species, followed by Sabellidae, Nereididae, Eunicidae and Serpulidae. Considering the number of polychaete species and their identity, the present data differed considerably from previous studies carried out in the area. Two alien species, Lepidonotus tenuisetosus, which represented a new record for the Adriatic Sea, and Nereis persica, were recorded. The highest mean abundance, species diversity and internal structural similarity of polychaete assemblages were found at 5 m depth, characterised by complex and heterogeneous algal habitat. The DISTLM forward analysis revealed that the distribution of several algal taxa as well as some algal functional-morphological groups significantly explained the observed distribution patterns of abundance and diversity of polychaete assemblages. The diversity of the North Adriatic hard bottom polychaete fauna is largely underestimated and needs regular updating in order to detect and monitor changes of benthic communities in the area.

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The study of the zoobenthos of the Tsraudon river basin (the Terek river basin)

E3S Web of Conferences ◽

10.1051/e3sconf/202016903006 ◽

2020 ◽

Vol 169 ◽

pp. 03006

Author(s):

Ia E. Dzhioeva ◽

Susanna K. Cherchesova ◽

Oleg A. Navatorov ◽

Sofia F. Lamarton

Keyword(s):

Species Diversity ◽

Species Composition ◽

River Basin ◽

Mountain Forest ◽

Forest Zone ◽

Distribution Boundary ◽

The Family ◽

Species Composition And Distribution

The paper presents data on the species composition and distribution of zoobenthos in the Tsraudon river basin, obtained during the 2017-2019 research. In total, 4 classes of invertebrates (Gastropoda, Crustacea, Hydracarina, Insecta) are found in the benthic structure. The class Insecta has the greatest species diversity. All types of insects in our collections are represented by lithophilic, oligosaprobic fauna. Significant differences in the composition of the fauna of the Tsraudon river creeks and tributary streams have been identified. 7 families of the order Trichoptera are registered in streams, and 4 families in the river. It is established that the streamlets of the family Hydroptilidae do not occur in streams, the distribution boundary of the streamlets of Hydropsyche angustipennis (Hydropsychidae) is concentrated in the mountain-forest zone. The hydrological features of the studied watercourses are also revealed.

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Epiphytic diatom communities on Phyllophora antarctica from the Ross Sea

Antarctic Science ◽

10.1017/s0954102014000327 ◽

2014 ◽

Vol 27 (1) ◽

pp. 44-56 ◽

Cited By ~ 5

Author(s):

Roksana Majewska ◽

Mario De Stefano

Keyword(s):

Species Composition ◽

Growth Form ◽

Ross Sea ◽

Distribution Patterns ◽

Trophic Levels ◽

Sampling Effort ◽

Epiphytic Diatoms ◽

Diatom Communities ◽

Ice Conditions ◽

Species Composition And Distribution

AbstractAntarctic seaweeds play an important ecological role, but the vast macroalgal beds, typical of the shallow-water zone, are not efficiently grazed. However, macroalgal thalli are covered by epiphytic diatoms which represent a rich food source for higher trophic levels. We describe the abundances, growth form structure, species composition and distribution patterns in the diatom communities associated with Phyllophora antarctica from selected sites within the Ross Sea. The goal of this work was to learn more about the relationships between various components of the epiphytic community and its habitat. To examine diatoms at the microscale, four relatively well described sampling sites were chosen and analyses were performed on a large number of diatoms. All observations and counts were made with the scanning electron microscope. Samples collected in the same season but from different sites and under different sea and ice conditions differed significantly in terms of species composition, but all represented abundant and well-developed diatom communities. A list of species associated with P. antarctica from the investigated area is provided and the influence of the sampling effort on the observed diatom diversity is assessed.

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Nereididae (Annelida: Polychaeta) from intertidal habitats in the Gulf of Oman, Iran

Zootaxa ◽

10.11646/zootaxa.3013.1.2 ◽

2011 ◽

Vol 3013 (1) ◽

pp. 48 ◽

Cited By ~ 7

Author(s):

SHETAV YOUSEFI ◽

HASAN RAHIMIAN ◽

SEID MOHAMMAD BAGHER NABAVI ◽

CHRISTOPHER GLASBY

Keyword(s):

Arabian Gulf ◽

Distribution Patterns ◽

North Coast ◽

Gulf Region ◽

Gulf Of Oman ◽

The North ◽

The Family ◽

Iranian Coast ◽

Intertidal Habitats ◽

Species Composition And Distribution

The species composition and distribution patterns of Nereididae (Annelida: Polychaeta) from the north coast of Gulf of Oman were investigated. Specimens were collected from ten intertidal sites along the Iranian coast, including mangrove, muddy, boulder and rocky, coral and sandy-rocky shore habitats. Eight species of Nereididae were identified: Leonnates decipiens Fauvel, Nereis coutieri Gravier, Neanthes deplanata Mohammad, Perinereis nuntia (Savigny), Perinereis heterodonta Gravier, Perinereis cultrifera (Grube), Perinereis horsti Gravier and Pseudonereis trimaculata Horst. The eight species are redescribed and two Perinereis species, P. heterodonta and P. horsti, currently junior synonyms of P. nuntia and P. vancaurica (Ehlers) respectively, are raised from synonymy. All reported species are new records for the Gulf of Oman, bringing the known total number of species in the family to twelve; P. trimaculata is also a new record for the Arabian Sea–Arabian Gulf region. Nereidid diversity within the region is comparable to other Indo-Pacific coastal regions, and higher than other parts of the world.

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PRELIMINARY STUDY OF SPECIES COMPOSITION AND DISTRIBUTION OF ECONOMICALLY VALUABLE PRAWNS IN THE NORTHEASTERN COASTAL WATERS OF VIETNAM

Marine Research in Indonesia ◽

10.14203/mri.v37i2.28 ◽

2015 ◽

Vol 37 (2) ◽

pp. 105-108

Author(s):

Do Dinh Thinh

Keyword(s):

Species Composition ◽

Environmental Pollution ◽

Coastal Waters ◽

Economic Importance ◽

The Family ◽

Preliminary Study ◽

Species Composition And Distribution ◽

Marine Environmental ◽

Marine Environmental Pollution

The northeastern coastal waters of Vietnam contains diverse and abundant prawns with economic importance. In recent years, overexploitation and marine environmental pollution have led to the decrease of prawns. The purpose of this study is to identify the current diversity and distribution of prawns in this region. Prawns were sampled by a trawl net at four sites in 2011. A total of 21 species of three families of the superfamily Penaeoidea was distributed in this area. The family Penaeidae is the most diverse with 19 species, while each of family Sicyoniidae and Solenoceridae has only one species.

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Tree Species Composition and Distribution Pattern in a Myristica Swamp of Northern Kerala, India

Current World Environment ◽

10.12944/cwe.11.3.08 ◽

2016 ◽

Vol 11 (3) ◽

pp. 743-750

Author(s):

K. A Sreejith ◽

U. M Chandrashekara ◽

T. K Nirmesh ◽

V. B Sreekumar

Keyword(s):

Species Composition ◽

Distribution Pattern ◽

Tree Species ◽

Dominant Species ◽

Basal Area ◽

Essential Elements ◽

Tree Species Composition ◽

The Family ◽

Species Composition And Distribution ◽

Species Specific

Knema Phytosociological studies have been carried out in a Myristica swamp in Northern Kerala to reveal the composition and distribution pattern of different tree species. On the basis of IVI, the family Myristicaceae was dominant and the association is attenuata - Myristica malabarica -Holigarna arnottiana type. The species like Gymnacranthera canarica and Myristica fatua var. magnifica, which are believed to be the essential elements of Myristica swamps, are totally absent here. A total 403 individuals (gbh > 10.1 cm) were recorded with a basal area of 34.25 m2 ha-1 in 0.5 ha. area. Total number of species recorded was 28, which represent 21families in which Myristicaceae represents 48.18% of total IVI. Among two dominant species, Myristica malabarica prefer swampy area hence their number of individual shows decreasing trend when we move from the swamp while the second dominant species Knema attenuata showing a reverse trend and was completely absent in the first five quadrats where soil water content is too high. Species specific eco-physiological studies are required to understand the reasons for change in the distribution pattern of these dominant species.

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