Results 71 to 80 of about 2,013 (255)

Arctic Ocean Shipping

, 2018
In Arctic Ocean Shipping, Donald R. Rothwell assesses contemporary navigation, security and sovereignty issues in the North American Arctic. Shipping in the Arctic Ocean is becoming a critical legal, geopolitical and security issue as a result of climate change and increased interest from non-Arctic States such as China. The law of the sea provides the
openaire   +2 more sources

Reduced size of larvae and small fish linked to warming and reduced prey density

Ecography, EarlyView.
Body size is an integrative trait that has declined across many ecological assemblages in the last decades. Changes in body size of early life stages and small‐bodied fish are driven by complex interactions between size‐dependent mortality, and temperature‐ and food‐dependent growth, and can have consequences for recruitment to the adult stock and food
Max Lindmark, Malin Werner, Peter Thor, Federico Maioli, Eros Quesada, Valerio Bartolino, Philip Jacobson   +6 more
wiley   +1 more source

The relationship between cellular protein content and selenium accumulation in freshwater microalgae

Integrated Environmental Assessment and Management, EarlyView.
Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie, Melanie Gallant, James R. Elphick, Christopher Kennedy   +3 more
wiley   +1 more source

Comparative and critical analysis of data sources used for ship traffic spatial pattern analysis in Canada and across the global Arctic

Maritime Transport Research
This study presents a comprehensive comparative analysis of three primary datasets commonly employed to evaluate shipping patterns in Arctic waters: 1) Northern Canada Vessel Traffic Zone (NORDREG), 2) satellite-based Automatic Identification System (S ...
Adrian Nicoll, Jackie Dawson, Jérôme Marty, Michael Sawada, Luke Copland   +4 more
doaj   +1 more source

Governance of Arctic Shipping

, 2020
This open access book is a result of the Dalhousie-led research project Safe Navigation and Environment Protection, supported by a grant from the Ocean Frontier Institute’s the Canada First Research Excellent Fund (CFREF). The book focuses on Arctic shipping and investigates how ocean change and anthropogenic impacts affect our understanding of risk ...
openaire   +2 more sources

Risk Forecasting in Shipping Exchange‐Traded‐Fund (ETF) Markets

International Journal of Finance &Economics, EarlyView.
ABSTRACT This article examines the risk properties of freight‐derivative‐based exchange‐traded funds (ETFs), focusing on the Breakwave Dry Bulk Shipping ETF (BDRY), and evaluates the accuracy of Value‐at‐Risk (VaR) and Expected Shortfall (ES) forecasts across a range of econometric models.
Christos Katris, Manolis G. Kavussanos, Stergiani (Stella) A. Moysiadou   +2 more
wiley   +1 more source

Arctic shipping threatens wildlife [PDF]

Current Biology, 2018
Summary The dramatic decline of sea ice in the Arctic is opening up new shipping routes and other commercial opportunities from resource extraction to tourism. This expansion of human activities into higher latitudes will have serious effects on the Arctic wildlife already impacted by the regional climate changing more rapidly than the global average.
openaire   +1 more source

Industry Signals and the Dynamics of Stock Market Predictability

International Journal of Finance &Economics, EarlyView.
ABSTRACT We investigate whether industry portfolios contain information that forecasts aggregate stock market returns. Earlier research reports evidence of their usefulness as predictors, yet later studies find weaker and unstable effects. Using updated U.S.
Michael Ellington, Sam Pybis, Yawen Zheng   +2 more
wiley   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

Irrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Bringing the Lab to the Field: Exploring Water‐Borne Corticosterone as a Physiological Indicator in Captive and Wild Common Frog Larvae (Rana temporaria)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Assessing physiological condition in wild populations is important for understanding how environmental variation shapes organismal performance. Water‐borne corticosterone (WB‐CORT) sampling shows promise for studying amphibian stress physiology, but its ecological relevance and limitations require evaluation, particularly when methods ...
Fabian Bartels, Katharina Ruthsatz
wiley   +1 more source