Northeast Atlantic paleoclimatic changes over the past 600,000 years

1977 ◽  
Vol 24 (4) ◽  
pp. 295
Keyword(s):  
Northeast Atlantic ◽  
The Past ◽  
Paleoclimatic Changes

Elemental composition of the Laguna Potrok Aike sediment sequence reveals paleoclimatic changes over the past 51 ka in southern Patagonia, Argentina

2014 ◽  
Vol 52 (4) ◽  
pp. 349-366 ◽  
Author(s):  
Annette Hahn ◽  
◽  
Pierre Kliem ◽  
Markus Oehlerich ◽  
Christian Ohlendorf ◽  
...  
Keyword(s):  
Elemental Composition ◽  
The Past ◽  
Paleoclimatic Changes ◽  
Southern Patagonia

scholarly journals Three initial OSPAR tests of ecological coherence: heuristics in a data-limited situation

2008 ◽  
Vol 65 (8) ◽  
pp. 1527-1533 ◽  
Author(s):  
Jeff A. Ardron
Keyword(s):  
Protected Area ◽  
Marine Protected Area ◽  
Limited Resources ◽  
Personal Perspective ◽  
Ecological Data ◽  
Policy Makers ◽  
Northeast Atlantic ◽  
The Past ◽  
Ecological Coherence ◽  
Made In

Abstract Ardron, J. A. 2008. Three initial OSPAR tests of ecological coherence: heuristics in a data-limited situation. – ICES Journal of Marine Science, 65: 1527–1533. As marine protected area (MPA) networks become established worldwide, it will be necessary to track the progress made in meeting the networks’ underlying ecological goals. The 12 coastal European nations of the OSPAR Convention have agreed to establish an “ecologically coherent” network of MPAs within the waters of the Northeast Atlantic by 2010. However, the meaning of ecological coherence has not been explicitly defined, and it has not been explained how it can be assessed. OSPAR’s work on this topic over the past 4 years is summarized here. As the 2010 deadline approaches, the urgency to assess ecological coherence increases. Proper scientific assessment is hampered by the current lack of detailed ecological data, and policy-makers are concerned that collecting data for indicators will tax already limited resources. Unconventional approaches that can make do with what little information is available are being developed, and three initial spatial tests are presented here. A personal perspective of lessons learnt is provided.

On the distinction of Harmothoe globifera (G.O. Sars, 1873) and some other easily confused polynoids in the NE Atlantic, with the description of a new species of Acanthicolepis Norman in McIntosh, 1900 (Polychaeta, Polynoidae)

Zootaxa ◽  
2010 ◽  
Vol 2525 (1) ◽  
pp. 1 ◽  
Author(s):  
RUTH BARNICH ◽  
DIETER FIEGE
Keyword(s):  
New Species ◽  
Cold Water ◽  
Identification Key ◽  
Ne Atlantic ◽  
Additional Material ◽  
Northeast Atlantic ◽  
The Past ◽  
A New Species ◽  
Synoptic Table

In the Northeast Atlantic several polynoid species have been confused in the past due to similarities in their elytral characters: Harmothoe globifera (G.O.Sars, 1873), Eunoe nodosa (M. Sars, 1861), Eunoe oerstedi Malmgren, 1866, Leucia nivea (M. Sars, 1863), and Acanthicolepis zibrowii n. sp., a new species from deep cold-water corals. The five species are redescribed and figured based on type and additional material. An identification key allowing also the identification of juveniles and anterior fragments and a synoptic table listing the major distinguishing characters of the species covered are provided.

scholarly journals Age verification of boarfish (Capros aper) in the Northeast Atlantic

2011 ◽  
Vol 69 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Karin Hüssy ◽  
Julie O. Coad ◽  
Edward D. Farrell ◽  
Lotte A. W. Clausen ◽  
Maurice W. Clarke
Keyword(s):  
Stock Assessment ◽  
Age Determination ◽  
Fishing Industry ◽  
Daily Growth ◽  
Northeast Atlantic ◽  
The Past ◽  
Growth Increments ◽  
Recent Interest ◽  
Marginal Increment ◽  
Age Verification

Abstract Hüssy, K., Coad, J. O., Farrell, E. D., Clausen, L. A. W., and Clarke, M. W. 2012. Age verification of boarfish (Capros aper) in the Northeast Atlantic. – ICES Journal of Marine Science, 69: 34–40. The boarfish (Capros aper) is a pelagic species of recent interest to the fishing industry, with landings increasing by >500% over the past 3 years. The objective of the study was to provide a method for age determination based on whole sagittal otoliths, with the results to be used in stock assessment. Translucent zones laid down at regular intervals are identified by marginal increment analysis as seasonally recurring. Translucent zones are formed between September/October and March/April, regardless of fish age. The occurrence of the first annulus is validated by analysis of presumed daily growth increments. Subsequent annulus deposition is homogenous between individuals and allows general guidelines to be derived for interpreting the age of boarfish using their otoliths.

Loess depositional dynamics and paleoclimatic changes in the Yili Basin, Central Asia, over the past 250 ka

CATENA ◽  
2020 ◽  
Vol 195 ◽  
pp. 104881
Author(s):  
He Yang ◽  
Guoqiang Li ◽  
Xin Huang ◽  
Xiaoyan Wang ◽  
Yunian Zhang ◽  
...  
Keyword(s):  
Central Asia ◽  
The Past ◽  
Paleoclimatic Changes

Dissimilarity Mapping Between Fossil and Contemporary Pollen Spectra in Europe for the Past 13,000 Years

1990 ◽  
Vol 33 (3) ◽  
pp. 360-376 ◽  
Author(s):  
Brian Huntley
Keyword(s):  
Distance Measure ◽  
Threshold Value ◽  
Late Glacial ◽  
The Holocene ◽  
The Past ◽  
Rates Of Change ◽  
Paleoclimatic Changes ◽  
Chord Distance ◽  
Changing Patterns

AbstractThe degree of analogy between fossil and contemporary pollen spectra in Europe has been investigated using the chord-distance dissimilarity measure. No-analog pollen spectra represent vegetation without a modern analog and hence, by inference, represent macroclimatic conditions different from any occurring in the region today. Such spectra have minimum chord distances that exceed a threshold value assessed using contemporary samples from the same and different vegetation u units. Contoured maps of minimum chord distance portray the changing patterns of analogous and no-analog pollen spectra, and hence vegetation units, since 13,000 yr B.P. No-analog vegetation units have been extensive in some regions for much of the Holocene, persisting as recently as 1000 years ago in many areas. The chord-distance measure has also been used to explore the patterns, extent, and rates of change in European pollen spectra since 13,000 yr B.P. Pollen spectra changed rapidly during late-glacial and early Holocene times and during the last millennium. Paleoclimatic changes have brought about the major changes in the Holocene paleovegetation of Europe. Human impact upon European vegetation has obscured neither the contemporary relationship between pollen spectra and vegetation nor the climatically determined long-term changes of vegetation across the continent since 13,000 yr B.P.

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