scholarly journals Catching the future: Applying Bayesian belief networks to exploratory scenario storylines to assess long‐term changes in Baltic herring ( Clupea harengus membras, Clupeidae) and salmon ( Salmo salar, Salmonidae) fisheries

2020 ◽  
Vol 21 (4) ◽  
pp. 797-812
Author(s):  
Mia Pihlajamäki ◽  
Inari Helle ◽  
Päivi Haapasaari ◽  
Simo Sarkki ◽  
Sakari Kuikka ◽  
...  
Keyword(s):  
Salmo Salar ◽  
Bayesian Belief Networks ◽  
Clupea Harengus ◽  
Belief Networks ◽  
Baltic Herring ◽  
Long Term Changes ◽  
The Future

Long-term changes in migration timing of adult Atlantic salmon (Salmo salar) at the southern edge of the species distribution

2004 ◽  
Vol 61 (12) ◽  
pp. 2392-2400 ◽  
Author(s):  
Francis Juanes ◽  
Stephen Gephard ◽  
Kenneth F Beland
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Global Climate ◽  
Life History Trait ◽  
Connecticut River ◽  
Migration Timing ◽  
Atlantic Salmon Salmo Salar ◽  
The North ◽  
Long Term Changes

The Connecticut River historically represented the southernmost extent of the North American range of Atlantic salmon (Salmo salar), but the native population was extirpated 200 years ago by dam construction. An extensive restoration effort has relied upon stock transfers from more northerly rivers, especially the Penobscot River (Maine). Recent work has shown differences in age structure between donor and derivative populations. Here we focus on a related life-history trait, the timing of the adult migration. We examined 23 years of migration timing data collected at two capture locations in the Connecticut River drainage. We found that both dates of first capture and median capture dates have shifted significantly earlier by about 0.5 days·year–1. To conclude whether this is a consequence of local adaptation or a coast-wide effect, we also quantified changes in migration timing of more northerly stocks (in Maine and Canada). We found that the changes in migration timing were not unique to the Connecticut River stock and instead observed coherent patterns in the shift towards earlier peak migration dates across systems. These consistent shifts are correlated with long-term changes in temperature and flow and may represent a response to global climate change.

Back to the future: using palaeolimnology to infer long-term changes in shallow lake food webs

2010 ◽  
Vol 55 (3) ◽  
pp. 600-613 ◽  
Author(s):  
RUTH RAWCLIFFE ◽  
CARL D. SAYER ◽  
GUY WOODWARD ◽  
JONATHAN GREY ◽  
THOMAS A. DAVIDSON ◽  
...  
Keyword(s):  
Food Webs ◽  
Shallow Lake ◽  
Long Term Changes ◽  
The Future

scholarly journals Monitoring of the “lichen desert” in the Belgrade area (1980/81, 1991 and 2007)

2008 ◽  
Vol 60 (2) ◽  
pp. 215-222 ◽  
Author(s):  
M. Cvijan ◽  
Gordana Subakov-Simic ◽  
Jelena Krizmanic
Keyword(s):  
Air Quality ◽  
Maximum Allowable Concentration ◽  
Winter Period ◽  
Comparison Of Results ◽  
Long Term Changes ◽  
The Future ◽  
A Current ◽  
So2 Concentration

This paper treats long-term changes in area of the ?lichen desert?, i.e., the region characterized (especially in the winter period) by average daily SO2 concentration exceeding 150?g/m3 of air, the maximum allowable concentration (MAC) for populated regions. Comparison of results obtained in 1980/81 and 1991 indicates that the ?lichen desert? expanded (from 12 to about 13 km2) as a consequence of deterioration of the air quality in the Belgrade area. Comparing the results obtained in 1991 with investigations carried out in 2007, we found that ?lichen desert? shrank substantially in the Belgrade area to a current size of about 11 km2. The new boundaries of the ?lichen desert? are presented, together with the main reasons for its shrinkage in the Belgrade area during the last 16 years and predictions of further alterations in the future.

scholarly journals Modeling Long-Term Changes in Climate, Ice Sheets and Sea Level: Using the Paleo Record to Understand Possibilities for the Future

2014 ◽  
Author(s):  
Bette Otto-Bliesner ◽  
William Lipscomb ◽  
Shawn Marshall ◽  
William Sacks ◽  
Jeremy Fyke ◽  
...  
Keyword(s):  
Sea Level ◽  
Ice Sheets ◽  
Long Term Changes ◽  
The Future ◽  
And Sea Level
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