scholarly journals Temporal and Spatial Changes of Dissolved Silicon and Diatoms in the North-eastern Ariake Bay

2013 ◽  
Vol 69 (7) ◽  
pp. III_307-III_313
Author(s):  
Hiroshi KUMAGAI ◽  
Yuko ISHIBASHI ◽  
Yoshito TANAKA
Keyword(s):  
Ariake Bay ◽  
The North ◽  
Spatial Changes ◽  
North Eastern ◽  
Temporal And Spatial ◽  
Dissolved Silicon

Spatiotemporal dynamics of the molluscan community associated with seagrass on the western equatorial Atlantic

2019 ◽  
Vol 99 (06) ◽  
pp. 1285-1294 ◽  
Author(s):  
Lorraine Lopes Cavalcante ◽  
Cristiane Xerez Barroso ◽  
Pedro Bastos de Macêdo Carneiro ◽  
Helena Matthews-Cascon
Keyword(s):  
Seagrass Meadow ◽  
Shoot Density ◽  
Halodule Wrightii ◽  
Conservation Unit ◽  
Equatorial Atlantic ◽  
Eastern Brazil ◽  
Spatial Changes ◽  
North Eastern ◽  
Temporal And Spatial ◽  
Epifaunal Assemblages

AbstractThis study aimed to qualitatively and quantitatively analyse the molluscan assemblages associated with a Halodule wrightii seagrass bed in a rarely studied area within a conservation unit in north-eastern Brazil. Seasonal and spatial changes in several seagrass meadow characteristics, including sediment, were evaluated to explain temporal and spatial variations in the molluscs found there. The molluscan community differed in its structure among periods and meadows, as well as in the composition of its infaunal and epifaunal assemblages. The results of this study indicated that molluscs are affected by the particular characteristics of a seagrass meadow, especially by its location in the intertidal zone, more than by the area of the meadow. Molluscs were also affected by other characteristics of the seagrass meadow, such as above-ground biomass and shoot density. Changes in all molluscan assemblages were also mediated by differences among months and seasons in this region of the western equatorial Atlantic, but not by seasonal changes of the meadow. The studied meadow was found to be one of the densest in Brazil, which has considerable importance to its associated fauna.

Immediate impacts of a severe tropical cyclone on the microclimate of a rain-forest canopy in north-east Australia

2004 ◽  
Vol 20 (5) ◽  
pp. 583-586 ◽  
Author(s):  
Stephen M. Turton ◽  
Danny T. Siegenthaler
Keyword(s):  
Forest Canopy ◽  
Spatial Scales ◽  
Light Penetration ◽  
Rain Forests ◽  
Recovery Processes ◽  
North East ◽  
The North ◽  
North Eastern ◽  
Temporal And Spatial ◽  
Tree Falls

Tropical cyclones, which are frequent along the north-eastern Australian coast, can result in severe disturbances to rain forests in the region (Grove et al. 2000, Webb 1958). Branch breakages and tree falls result in high levels of light penetration to the forest floor, which is normally heavily shaded (Turton 1992). This change in microclimate stimulates the growth of normally suppressed seedlings, the germination of seeds that are triggered by sunlight (Chazdon 1988), and often, invasion by weeds. Fragmented rain forests, that are common in the region, are particularly vulnerable to impacts of cyclones because of their large edge to forest area ratio. Appropriate management of such rain forests, following catastrophic disturbance, requires a thorough understanding of recovery processes at a number of temporal and spatial scales (Grove et al. 2000).

Discussion on “The grinding wheel and production” at the North-Eastern Section of the Institution

1942 ◽  
Vol 21 (8) ◽  
pp. 315
Author(s):  
Bowen ◽  
Vickery ◽  
Buchanan ◽  
Swallow ◽  
Perks ◽  
...  
Keyword(s):  
Grinding Wheel ◽  
The North ◽  
North Eastern

The influence of submesoscale eddies on hydrochemical parameters and structural and functional characteristics of phytoplankton in the north-eastern part of the Black Sea

2019 ◽  
pp. 24-40
Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  
Keyword(s):  
Anticyclonic Eddy ◽  
The Black Sea ◽  
Hydrochemical Parameters ◽  
North East ◽  
The North ◽  
Seasonal Thermocline ◽  
North Eastern ◽  
Quantitative Indicators ◽  
The City ◽  
North Eastern Part

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.

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