The species composition and distribution of free-living nematodes (Nematoda) in an area of natural oil and gas seeps in Lake Baikal

A study of the species composition of birds at the Nizhneangarsk airport (Northern Baikal, Buryatia) and the adjacent territories within a radius of 15 km was carried out. A wide variety of landscapes and biotopes determines a relatively rich species and ecological diversity of birds. 145 species were identified; the majority of them belong to the order of Passeriformes (41,3%), Charadriiformes (19,2%), Anseriformes (11,7%) and Falconiformes (6,3%), the share of other orders is small (no more than 4%). 39 bird species were recorded in the central area around the airport within a 2 km radius. The rock dove, waxwing, magpie, house and field sparrows are common among them. 144 bird species have been recorded in the area adjacent to the airport (radius 15 km). The largest concentration of wetland bird species is observed in the Verkhneangarsk sor (bay) of Lake Baikal. Cormorants, gulls and ducks are numerous here. Among the birds there are quite a few species that form large flocks and colonies, as well as species feeding in the air and soaring high above the ground. Nizhneangarsk airport in terms of aircraft flight safety is located in an area of increased risk of collision with birds. This circumstance provides for strengthening the work of the ornithological service of this airport.

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Cruise summary for P-1-02-SC: acoustic imaging of natural oil and gas seeps and measurement of dissolved methane concentration in coastal waters near Pt. Conception, California

Open-File Report ◽

10.3133/ofr03122 ◽

2003 ◽

Author(s):

T.D. Lorenson ◽

Jennifer A. Dougherty ◽

William Ussler ◽

Charles K. Paull

Keyword(s):

Coastal Waters ◽

Methane Concentration ◽

Oil And Gas ◽

Acoustic Imaging ◽

Dissolved Methane ◽

Natural Oil ◽

Gas Seeps

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Species composition and distribution of free-living marine nematodes in Vostok Bay, Sea of Japan

Russian Journal of Marine Biology ◽

10.1134/s1063074006010019 ◽

2006 ◽

Vol 32 (1) ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

Yu. A. Trebukhova ◽

O. N. Pavlyuk

Keyword(s):

Species Composition ◽

Sea Of Japan ◽

Marine Nematodes ◽

Vostok Bay ◽

Free Living ◽

Species Composition And Distribution

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Species composition and distribution of marine macro algae at Co To and Thanh Lan archipelago

Tạp chí Khoa học và Công nghệ Biển ◽

10.15625/1859-3097/20/3/15247 ◽

2020 ◽

Vol 20 (3) ◽

pp. 267-276

Author(s):

Dam Duc Tien ◽

Nguyen Thi Mai Anh ◽

Linh Manh Nguyen ◽

Pham Thu Hue ◽

Lawrence Liao

Keyword(s):

Species Composition ◽

Littoral Zone ◽

Marine Algae ◽

Similarity Coefficient ◽

Algal Flora ◽

Average Value ◽

Site Number ◽

Species Composition And Distribution ◽

Total Species ◽

Macro Algae

This paper exhibites species composition and distribution of marine seaweed at 10 sites of Co To and Thanh Lan islands in May 2019. The studies record 76 species of marine algae in the area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five species are classified into Cyanophytes (comprising 6.6% of total species); thirty-four species into Rhodophytes (44.7%); twenty-one species into Ochrophytes/Phaeophytes (27.6%) and sixteen species into Chlorophytes (21.1%). The species composition of marine seaweeds in Co To and Thanh Lan shows significant differences as follows: 22 species (sites number 4 and 10) to 58 species (site number 2) and the average value is 38.7 species per site. Sørensen similarity coefficient fluctuates from 0.33 (sites number 5 and 10) to 0.84 (sites number 1 and 3) and the average value is 0.53. The current investigations show that four species of twenty-one species are collected in the littoral zone and forty-two species in the sub-littoral zone (in which there are thirteen species distributed in both littoral zone and sub-littoral zone). The algal flora in Co To and Thanh Lan is characterized by subtropics.

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