BiologyBrowser - Botswana

26-28 September 2011 - XLV Congresso Internazionale della Società di Linguistica Italiana

kim hunter — Tue, 09 Aug 2011 08:10:51 +0000

Aosta/Torino, Italy

23-24 March 2012 - Annual Meeting of the Georgia Academy of Science

kim hunter — Mon, 08 Aug 2011 11:41:28 +0000

Kennesaw State University, Kennesaw, Georgia, USA

30 September - 02 October 2011 - Colorado Native Plant Society Annual Meeting

kim hunter — Wed, 03 Aug 2011 11:53:33 +0000

Carbondale, Colorado, USA

Macrofauna communities in surface sediments in the Amundsen Basin, at the Morris Jesup Rise and at the Yermak Plateau (Eurasian Arctic Ocean)

admin — Mon, 22 Nov 2010 19:47:18 +0000

Macrofaunal communities of the western Eurasian Arctic Ocean were studied along a transect from the North Pole, across the Amundsen Basin and Gakkel Ridge towards the Morris Jesup Rise and the Yermak Plateau. Samples were collected during autumn 1991, from depths of 560?4411 m, using a box corer. Macrofaunal species numbers varied from 1 to 11 per 0.02 m**2 in the basins approaching the Morris Jesup Rise and from 44 to 81 per 0.25 m**2 at the Yermak Plateau. Abundances increased from 1 to 31 per 0.02 m**2 in the basin and on the Morris Jesup Rise to 24?60 per 0.02 m**2 on the Yermak Plateau.

Pollen analysis from Fiekers Busch, Rinteln, Germany

admin — Mon, 22 Nov 2010 19:47:10 +0000

Fiekers Busch is a wet alder wood close to Rinteln (southwest of Hannover/West Germany) existing there since about 6 000 or - at the most - 7 500 radiocarbon years. The sandy layers below the peaty sequence date from about 9 000 BP. The pollen diagram shows the basic trends of the postglacial vegetational development. Low pollen frequency and poor pollen preservation do , however, strongly restrict the possibilities to explain the peculiarities of the pollendiagram, especially the high pine and linden values.

10Be records of sediment cores from high northern latitudes

admin — Mon, 22 Nov 2010 19:47:02 +0000

The 10Be records of four sediment cores forming a transect from the Norwegian Sea at 70?N (core 23059) via the Fram Strait (core 23235) to the Arctic Ocean at 86?N (cores 1533 and 1524) were measured at a high depth resolution. Although the material in all the cores was controlled by different sedimentological regimes, the 10Be records of these cores were superimposed by glacial/interglacial changes in the sedimentary environment.

Magnetic and gravity measurements on North-South profiles across the Grosse Meteor Bank, North Atlantic

admin — Mon, 22 Nov 2010 19:46:45 +0000

During the first section of the "Meteor" cruise No. 2 a profile was run from the Azores to the south across the flanks of the Mid-Atlantic Ridge with a chain of seamounts. The profile extended between the Cruiser (living) and the Hyeres seamounts, which, according to our soundings, form a connected massif, and across the centre of the Grosse Meteor Bank (30?N, 28.5 ?W). These seamounts rise from a depth of more than 4000 m up till close to the surface of the sea forming there a large almost flat plateau. In the case of the Grosse Meteor Bank, this plateau has a N-S extension of approx.

Alkenones in the Mediterranean Sea

admin — Mon, 22 Nov 2010 19:46:23 +0000

Time-series of downward alkenone fluxes have been investigated at 200 m depth over a one year sediment trap experiment, in the Northwestern Mediterranean Sea. Alkenone flux maxima occurred in autumn and to a lesser extent in May, during the spring bloom. Temperature estimates calculated from the UK'37 index revealed that alkenone producers preferentially develop in subsurface waters (at about 50 m) in spring, whereas the autumn alkenone production occurred upper in the water column (around 30 m).

Stable carbon and oxygen isotope record of Marine Isotope Stage 11 in the South Atlantic

admin — Mon, 22 Nov 2010 19:46:06 +0000

Oxygen and carbon isotopic gradients in surface waters were reconstructed for the past 450 kyr by analysis of the planktic foraminifer Neogloboquadrina pachyderma in cores located at approximately 43?, 47?, and 54?S across the Polar Frontal Zone in the South Atlantic sector of the Southern Ocean. Comparison of the oxygen isotopic records for peak interglacial conditions during the past 450 kyr reveals that Marine Isotope Stage (MIS) 11 was not substantially warmer than other interglacials at high southern latitudes, although the period of warmth lasted longer.

Pollen analysis of sediment profile WO1 from Wollingster See

admin — Mon, 22 Nov 2010 19:45:57 +0000

A palynological study of a 15 m sediment core from the centre of Lake Wollingst (water depth 14,5 m) is presented. The pollen record shows 3 lateglacial thermomers, called Meiendorf, B?lling, Aller?d and the early holocene Friesland-Thermomer. The succession of forest vegetation taking place on the lake surroundings during the Holocene was typical for older moraine soils which are poor in nutrients: forest vegetation started with birch and pine, followed by hazel, oak and elm in the Boreal and by alder, lime and ash-tree in the Atlantic. Beech and hornbeam reached the area during Subboreal.