Ecological regime shift drives declining growth rates of sea turtles throughout the West Atlantic

2017 ◽  
Vol 23 (11) ◽  
pp. 4556-4568 ◽  
Author(s):  
Karen A. Bjorndal ◽  
Alan B. Bolten ◽  
Milani Chaloupka ◽  
Vincent S. Saba ◽  
Cláudio Bellini ◽  
...  
Keyword(s):  
Growth Rates ◽  
Regime Shift ◽  
Sea Turtles ◽  
The West ◽  
Ecological Regime

Swamp plant communities with Salix reptans Rupr. and S. lanata L. in the west of tundra zone of Taymyr Peninsula

2003 ◽  
pp. 28-40 ◽  
Author(s):  
L. L. Zanokha
Keyword(s):  
Plant Communities ◽  
Species Group ◽  
Intermediate Position ◽  
Tundra Zone ◽  
The West ◽  
Diagnostic Species ◽  
New Associations ◽  
Mire Vegetation ◽  
Humidity Gradient ◽  
Ecological Regime

The 2 new associations, Carici stantis—Salicetum reptantis and Salico-Polemonietum acutiflori, are described within the all. Caricionstantis of the class Scheuchzerio-Caricetea fuscae R. Tx. 1937 for the northern belt of the typical tundra subzone of Taymyr. The diagnostic species group of the first syntaxon includes plants typical of sites with excessive watering. The ass. Carici stantis—Salicetum reptantis is restricted to bottoms or lower parts of the watershed and moun­tain terrace slopes. The ecological regime of these sites is subject to slight variations reflected in presence/ absence of certain species. Due to floristic differences, the association is subdivided into several subassociations which form a topographic-ecological series along the humidity gradient: epilobietosum palustris→ptilidietosum ciliaris→typicum→petasitetosum frigidi. The ass. Carici stantis—Salicetum reptantis is referred to the all. Caricionstantis which also includes the associations Meesiotriquetris—Caricetumstantis and Pooarcticae—Dupontietumfisheri (also described from the Ragozinka R. basin); the latter occur in the wet depres­sions between sloping hills and the flowing valleys, respectively. If compared to these two, the ass. Carici stantis—Salicetum reptantis is shown to hold an intermediate position between them. The ass. Salico-Polemonietum acutiflori with the 2 variants, Salix lanata and S. reptans, represents various variants of mire vegetation which have under­gone zoogenic transformation (by lemmings). The stands size 1—1.5 m2 in space. The diagnostic species group comprises plants common of the wet mossy stream banks. The association is referred to the all. Caricion stantis, although many diagnostic species of the alliance are not present in its composition. When the new data are available, the association is probable to be separated into an independent alliance.

An ecological regime shift resulting from disrupted predator–prey interactions in Holocene Australia

Ecology ◽  
2014 ◽  
Vol 95 (3) ◽  
pp. 693-702 ◽  
Author(s):  
Thomas A. A. Prowse ◽  
Christopher N. Johnson ◽  
Corey J. A. Bradshaw ◽  
Barry W. Brook
Keyword(s):  
Regime Shift ◽  
Predator Prey ◽  
Ecological Regime

Czechoslovak industrial exports: structural change, re-orientation and specialization (1989 - 1992)

1996 ◽  
Vol 5 (3) ◽  
Author(s):  
Adam Slater
Keyword(s):  
Structural Change ◽  
Open Economy ◽  
Growth Rates ◽  
Rapid Growth ◽  
Transition Period ◽  
Small Open Economy ◽  
Considerable Extent ◽  
The West ◽  
Export Sector ◽  
Reorientation Process

Fostering a strong export sector is essential for the kind of small, open economy like post-communist Czechoslovakia (latterly the Czech and Slovak Republics). The CSFR export sector has to a considerable extent the defied expectations, of many of the more pessimistic commentators in regard to the expansion of exports to the West, as many industries with a previously poor record on the EC market have attained very rapid growth rates of exports to that market. Nevertheless, the evidence of section 3 points to a weakening of the reorientation process in 1992, and raises questions about the future of many of the industries which formerly exported largely to the CMEA area. Whilst the overall level of exports has been largely maintained in the transition period, export growth to the West has not allowed most of the CMEA-oriented industries to maintain their shares in total exports.

Temporal, spatial, and body size effects on growth rates of loggerhead sea turtles (Caretta caretta) in the Northwest Atlantic

2013 ◽  
Vol 160 (10) ◽  
pp. 2711-2721 ◽  
Author(s):  
Karen A. Bjorndal ◽  
Barbara A. Schroeder ◽  
Allen M. Foley ◽  
Blair E. Witherington ◽  
Michael Bresette ◽  
...  
Keyword(s):  
Body Size ◽  
Growth Rates ◽  
Size Effects ◽  
Sea Turtles ◽  
Caretta Caretta ◽  
Loggerhead Sea Turtles ◽  
Northwest Atlantic

Age, growth and maturation of the European squid Loligo vulgaris (Myopsida, Loliginidae) on the west Saharan shelf

1995 ◽  
Vol 75 (3) ◽  
pp. 593-604 ◽  
Author(s):  
Alexander Arkhipkin
Keyword(s):  
Life Cycle ◽  
Sexual Dimorphism ◽  
Power Function ◽  
Growth Rates ◽  
Gompertz Function ◽  
The West ◽  
Loligo Vulgaris ◽  
Growth Increments ◽  
Males And Females ◽  
June July

Age, growth and maturation of Loligo vulgaris were studied by examination of growth increments within statoliths of 294 specimens (mantle length, ML, ranging from 31 to 498 mm) caught on the west Saharan shelf between 1985 and 1988. Maximum age was 335 d (290 mm ML) for females, and 396 d (498 mm ML) for males. Growth rates varied considerably among individuals with a greater range in males. Sexual dimorphism in length was apparent after about 210 d. Males and females diverged considerably in weight, with males reaching a greater weight after about 180 d. Growth in length between 124 and 396 d was best described by a power function, while growth in weight was best described by the Gompertz function. Males started maturing at 180–210 d and mature males ranged in age between 250 and 396 d; while females started maturing at 240–270 d and mature females ranged between 285 and 335 d. Loligo vulgaris hatched throughout the year with two distinct peaks; in winter (December - early March) and summer (June-July). The life cycle of L. vulgaris populations on the west Saharan shelf lasts ~1 y, with large males (>450 mm ML) living slightly longer.

A Tropical Cyclone-Induced Ecological Regime Shift: Mangrove Forest Conversion to Mudflat in Everglades National Park (Florida, USA)

Wetlands ◽  
2020 ◽  
Vol 40 (5) ◽  
pp. 1445-1458 ◽  
Author(s):  
Michael J. Osland ◽  
Laura C. Feher ◽  
Gordon H. Anderson ◽  
William C. Vervaeke ◽  
Ken W. Krauss ◽  
...  
Keyword(s):  
Tropical Cyclone ◽  
Mangrove Forest ◽  
National Park ◽  
Regime Shift ◽  
Everglades National Park ◽  
Forest Conversion ◽  
Ecological Regime

scholarly journals Using a Social-ecological Regime Shift Approach to Understand the Transition from Livestock to Game Farming in the Eastern Cape, South Africa

Land ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 97
Author(s):  
Therezah Achieng ◽  
Kristine Maciejewski ◽  
Michelle Dyer ◽  
Reinette Biggs
Keyword(s):  
South Africa ◽  
Land Use ◽  
Regime Shift ◽  
Ecological Impacts ◽  
Eastern Cape ◽  
Livestock Farming ◽  
Social Ecological ◽  
Trade Offs ◽  
And Function ◽  
Ecological Regime

This study explored the shift in land use from livestock farming to game farming in the Eastern Cape, South Africa, from a social-ecological regime shift perspective. A regime shift can be defined as a large, persistent change in the structure and function of the intertwined social and ecological components of a landscape. This research focused on the Amakhala game reserve as a case study to understand how the shift affected the provision of ecosystem services and human wellbeing. We used remote sensing techniques to quantify changes in vegetation and found evidence of vegetation recovery following the shift. We then conducted interviews with both landowners and farmworkers and used participatory mapping to understand their perceptions of the main drivers and social-ecological impacts of the shift in land use. Social narratives revealed stark differences in different stakeholders’ perceptions, highlighting that the change in land use had varied implications for, and were perceived differently by, different stakeholders. Farmworkers emphasized changes in social structures that weakened community bonds and erased valued connections to the land. At the same time, they increased employment of women, skills development, and increased wages as benefits of the new game farming regime. Landowners, on the other hand, indicated financial gains from the land use change. The transition therefore resulted in trade-offs that surfaced as social, economic, and cultural losses and gains. These changes, especially in social relationships and community structures, have implications for resilience and possible future pathways of development in the region.

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