Variability of Pacific herring (Clupea pallasii) spawn abundance under climate change off the West Coast of Canada over the past six decades

2019 ◽  
Vol 200 ◽  
pp. 103229 ◽  
Author(s):  
Yi Xu ◽  
Caihong Fu ◽  
Angelica Peña ◽  
Roy Hourston ◽  
Richard Thomson ◽  
...  
Keyword(s):  
Climate Change ◽  
West Coast ◽  
Pacific Herring ◽  
The West ◽  
Clupea Pallasii ◽  
The Past

Carbon storage in seagrass ecosystems along the Andaman coast of Thailand

2018 ◽  
Vol 61 (5) ◽  
pp. 429-440 ◽  
Author(s):  
Milica Stankovic ◽  
Naruemon Tantipisanuh ◽  
Anchana Prathep
Keyword(s):  
Climate Change ◽  
Carbon Content ◽  
Carbon Storage ◽  
Significant Influence ◽  
West Coast ◽  
Human Disturbance ◽  
Total Carbon ◽  
The West ◽  
Seagrass Meadows ◽  
Seagrass Ecosystems

Abstract Seagrass ecosystems are important contributors to mitigation of climate change, since they are responsible for large carbon sinks. However, there is limited knowledge regarding the importance of variability of carbon storage in various ecosystems. In this study, we estimated carbon storage in several structurally different seagrass meadows along the west coast of Thailand and determined whether degree of exposure, human disturbance, and meadow type influenced carbon storage within these meadows. Carbon content within the living vegetation was on average 3±2.7 Mg ha−1, whilst average storage of carbon in the sediment was 122±35.3 Mg ha−1. Meadow type and disturbance had a significant influence on total carbon storage in the ecosystem, while the degree of exposure of the bay did not show great differences. Uniform meadows had a higher average total carbon storage than mixed meadows (133±36.2 and 110±41.3 Mg ha−1, respectively). Undisturbed meadows had a higher average total carbon storage than disturbed ones (140±36.5 and 103±34.8 Mg ha−1, respectively). The results obtained contribute to our understanding of carbon storage on an ecosystem scale and can provide a baseline for proper management, conservation, and climate change studies in the region.

scholarly journals A review of factors limiting recovery of Pacific herring stocks in Canada

2010 ◽  
Vol 67 (9) ◽  
pp. 1903-1913 ◽  
Author(s):  
Jacob F. Schweigert ◽  
Jennifer L. Boldt ◽  
Linnea Flostrand ◽  
Jaclyn S. Cleary
Keyword(s):  
West Coast ◽  
Positive Relationship ◽  
Pacific Herring ◽  
Zooplankton Abundance ◽  
Natural Mortality ◽  
Population Recovery ◽  
The West ◽  
Clupea Pallasi ◽  
Adequate Food ◽  
Forage Species

AbstractSchweigert, J. F., Boldt, J. L., Flostrand, L., and Cleary, J. S. 2010. A review of factors limiting recovery of Pacific herring stocks in Canada. – ICES Journal of Marine Science, 67: 1903–1913. On the west coast of Canada, Pacific herring (Clupea pallasi) supported an intensive reduction fishery from the early 1930s until the collapse of all five major stocks in the late 1960s, which then recovered rapidly following a fishery closure. Despite conservative harvests, abundance has declined again recently, with little evidence of recovery. We investigated the effect of bottom-up forcing by zooplankton abundance, top-down forcing by fish and mammal predators, and the effects of sardine abundance as potential competitors on the natural mortality of the herring stock on the west coast of Vancouver Island. Herring mortality was positively related to Thysanoessa spinifera and southern chaetognaths and negatively to pteropod abundance. Estimated predation on herring decreased significantly during the years 1973–2008, with the main consumers changing from fish to mammals. However, the correlation with herring mortality was negative, whereas there was a significant positive relationship with sardine abundance. Population recovery is expected to be facilitated by a combination of factors, including adequate food supply, limited or reduced predation (including fishing), and limited competition particularly for wasp–waist systems, where different forage species may occupy similar niches.

Invasion of the New Zealand Coastline by European Sea-Rocket (Cakile maritima) and American Sea-Rocket (Cakile edentula)

2011 ◽  
Vol 4 (2) ◽  
pp. 260-263 ◽  
Author(s):  
Roger D. Cousens ◽  
Jane M. Cousens
Keyword(s):  
New Zealand ◽  
North America ◽  
West Coast ◽  
Congeneric Species ◽  
The West ◽  
The Past ◽  
The North ◽  
Cakile Maritima ◽  
Cakile Edentula ◽  
North And South

AbstractOn the west coast of North America and in Australia, there have been parallel cases of sequential invasion and replacement of the shoreline plant American sea-rocket by European sea-rocket. A similar pattern has also occurred in New Zealand. For 30 to 40 yr, from its first recording in 1921, American sea-rocket spread throughout the eastern coastlines of the North and South Islands of New Zealand. European sea-rocket has so far been collected only on the North Island. From its first collection in 1937, European sea-rocket spread to the northern extremity of the island by 1973, and by 2010, it had reached the southernmost limit. In the region where both species have occurred in the past, American sea-rocket is now rarely found. This appears to be another example of congeneric species displacement.

Large-scale aeolian sand movement on the west coast of Jutland, Denmark in late Subboreal to early Subatlantic time—a record of climate change or cultural impact?

GFF ◽  
2001 ◽  
Vol 123 (4) ◽  
pp. 193-203 ◽  
Author(s):  
Lars B. Clemmensen ◽  
Andrew S. Murray ◽  
Jens-Henrik Bech ◽  
Anette Clausen
Keyword(s):  
Climate Change ◽  
West Coast ◽  
Large Scale ◽  
Cultural Impact ◽  
Aeolian Sand ◽  
The West ◽  
Sand Movement

The Ethical Neutrality of Prospective Payments: Justice Issues

1996 ◽  
Vol 5 (4) ◽  
pp. 570-578
Author(s):  
Jean McDowell
Keyword(s):  
United States ◽  
Healthcare System ◽  
West Coast ◽  
Healthcare Delivery ◽  
The United States ◽  
Fee For Service ◽  
Reimbursement Mechanisms ◽  
The West ◽  
The Past ◽  
The U.S

The U.S. healthcare system has been subject to unprecedented scrutiny over the past three years; one of the results of this scrutiny has been recognition of the serious problems that exist in both healthcare delivery and reimbursement mechanisms. While the verbal debate in Washington has essentially ceased, within the healthcare community a historic shift has taken place in the way healthcare reimbursement is structured: increasingly, traditional fee-for-service reimbursement methods are being replaced with capitation reimbursement methods. While this phenomenon originated on the West Coast, it has spread to all geographic sectors of the United States in varying degrees and can be expected to dominate the funding patterns of healthcare over the next decade.

scholarly journals Climate Change Is Making India’s West Coast More Vulnerable to Cyclones

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Rishika Pardikar
Keyword(s):  
Climate Change ◽  
West Coast ◽  
Arabian Sea ◽  
The West ◽  
Cyclonic Storms

A new study found significant increases in the intensity, frequency, and duration of cyclonic storms over the Arabian Sea. Is the west coast prepared?

scholarly journals Brief communication: Historical glacier length changes in West Greenland

2012 ◽  
Vol 6 (4) ◽  
pp. 3491-3501 ◽  
Author(s):  
P. W. Leclercq ◽  
A. Weidick ◽  
F. Paul ◽  
T. Bolch ◽  
M. Citterio ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level ◽  
20Th Century ◽  
West Coast ◽  
The West ◽  
Glacier Dynamics ◽  
Glacier Length ◽  
Length Changes ◽  
The 19Th Century ◽  
Insight Into

Abstract. Past glacier fluctuations provide insight into glacier dynamics, climate change, and the contribution of glaciers to sea-level rise. Here, the length fluctuations since the 19th century of 18 local glaciers in West and South Greenland are presented, extending and updating the study by Weidick (1968). The studied glaciers all show an overall retreat with an average of 1.2 ± 0.2 km over the 20th century, indicating a general rise of the equilibrium line along the west coast of Greenland during the last century. The rate of retreat was largest in the first half of the 20th century.

An assessment of the past and present distribution status of the whale shark (Rhincodon typus)along the west coast of India

2016 ◽  
Author(s):  
P.V.R. Premjothi ◽  
B.C. Choudury ◽  
Rahul Kaul ◽  
S. Subburaman ◽  
Manoj Matwal ◽  
...  
Keyword(s):  
West Coast ◽  
Whale Shark ◽  
The West ◽  
Rhincodon Typus ◽  
West Coast Of India ◽  
The Past ◽  
Present Distribution

Monopseudocuma a new genus from the North East Atlantic and redescription of Pseudocuma gilsoni Bacescu, 1950 (Cumacea: Pseudocumatidae)

Zootaxa ◽  
2006 ◽  
Vol 1203 (1) ◽  
pp. 39
Author(s):  
ALISON M. MCCARTHY ◽  
SARAH GERKEN ◽  
DAVID MCGRATH ◽  
GRACE P. MCCORMACK
Keyword(s):  
North Sea ◽  
West Coast ◽  
New Genus ◽  
East Atlantic ◽  
The West ◽  
The Past ◽  
North East ◽  
The North ◽  
The North Sea

The validity of Pseudocuma gilsoni B|cescu 1950 has been questioned in the past. The recent discovery of material in Irish waters, and in the North Sea, confirms the presence of the species in the North East Atlantic and provides the opportunity to present a full redescription. A new genus, Monopseudocuma, is erected to accommodate the species. A neotype is designated from the West coast of Ireland.

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