scholarly journals Assessing freshwater life-stage vulnerability of an endangered Chinook salmon population to climate change influences on stream habitat

2016 ◽  
Vol 71 (2) ◽  
pp. 127-137 ◽  
Author(s):  
JM Honea ◽  
MM McClure ◽  
JC Jorgensen ◽  
MD Scheuerell
Keyword(s):  
Climate Change ◽  
Chinook Salmon ◽  
Life Stage ◽  
Stream Habitat ◽  
Salmon Population

Combined Effects of Climate Change and Bank Stabilization on Shallow Water Habitats of Chinook Salmon

2013 ◽  
Vol 27 (6) ◽  
pp. 1201-1211 ◽  
Author(s):  
JEFFREY C. JORGENSEN ◽  
MICHELLE M. MCCLURE ◽  
MINDI B. SHEER ◽  
NANCY L. MUNN
Keyword(s):  
Climate Change ◽  
Shallow Water ◽  
Chinook Salmon ◽  
Combined Effects ◽  
Bank Stabilization

scholarly journals Combined effects of warming and hypoxia on early life stage Chinook salmon physiology and development

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Annelise M Del Rio ◽  
Brittany E Davis ◽  
Nann A Fangue ◽  
Anne E Todgham
Keyword(s):  
Chinook Salmon ◽  
Early Life ◽  
Life Stage ◽  
Early Life Stage ◽  
Combined Effects

scholarly journals Impacts of climate change on the ecotoxicology of chemical contaminants in estuarine organisms

2015 ◽  
Vol 61 (4) ◽  
pp. 641-652 ◽  
Author(s):  
Marie E. Delorenzo
Keyword(s):  
Climate Change ◽  
Global Climate ◽  
Life Stage ◽  
Interactive Effects ◽  
Chemical Pollution ◽  
Chemical Contaminants ◽  
Climate Conditions ◽  
Mechanisms Of Toxicity ◽  
Estuarine Species ◽  
Impacts Of Climate Change

Abstract Global climate change effects will vary geographically, and effects on estuaries should be independently considered. This review of the impacts of climate change on the ecotoxicology of chemical contaminants aims to summarize responses that are specific to estuarine species. Estuarine organisms are uniquely adapted to large fluctuations in temperature, salinity, oxygen, and pH, and yet future changes in climate may make them more susceptible to chemical contaminants. Recent research has highlighted the interactive effects of chemical and nonchemical stressors on chemical uptake, metabolism, and organism survival. Assessments have revealed that the nature of the interaction between climate variables and chemical pollution will depend on estuarine species and life stage, duration and timing of exposure, prior stressor exposure, and contaminant class. A need for further research to elucidate mechanisms of toxicity under different abiotic conditions and to incorporate climate change factors into toxicity testing was identified. These efforts will improve environmental risk assessment of chemical contaminants and management capabilities under changing climate conditions.

Landlocked Atlantic salmon in a large river-lake ecosystem: managing an endemic, large-bodied population of high conservation value

2020 ◽  
Author(s):  
Larry A. Greenberg ◽  
Johnny R. Norrgård ◽  
Pär Gustafsson ◽  
Eva Bergman
Keyword(s):  
Carrying Capacity ◽  
Habitat Restoration ◽  
Life Stage ◽  
Large River ◽  
Lake Ecosystem ◽  
Lake Ecosystems ◽  
Large Size ◽  
Salmon Population ◽  
High Conservation ◽  
Sustainable Fishery

Managing and conserving threatened migratory salmonid populations in large river-lake ecosystems is challenging not only because of the ecosystems’ large size, but also because there is often more than one anthropomorphic stressor. The River Klarälven-Lake Vänern ecosystem, situated in Norway and Sweden, is a large highly modified ecosystem, home to a threatened, endemic, large-bodied population of landlocked salmon. With 11 dams, the salmon population has been maintained through extensive stocking and a truck and transport system for spawners. Here we review what we have learned about the salmon after 15 years of research, highlighting the major findings for each life stage. Our studies indicate that the salmon population is below carrying capacity, and we suggest measures to increase the number of spawners and downstream passage success. Habitat restoration to compensate for losses from former log driving activities is expected to further increase carrying capacity. Re-establishing salmon in Klarälven’s upper reaches in Norway, while possible, is fraught with both ecological and legislative hurdles. Substantial long-term funding is needed to foster co-management and ensure a sustainable fishery.

scholarly journals Life stage, not climate change, explains observed tree range shifts

2016 ◽  
Vol 22 (5) ◽  
pp. 1904-1914 ◽  
Author(s):  
František Máliš ◽  
Martin Kopecký ◽  
Petr Petřík ◽  
Jozef Vladovič ◽  
Ján Merganič ◽  
...  
Keyword(s):  
Climate Change ◽  
Life Stage ◽  
Range Shifts

Environmental and geospatial factors drive juvenile Chinook salmon distribution during early ocean migration

2013 ◽  
Vol 70 (8) ◽  
pp. 1167-1177 ◽  
Author(s):  
Brian J. Burke ◽  
Martin C. Liermann ◽  
David J. Teel ◽  
James J. Anderson
Keyword(s):  
Chinook Salmon ◽  
Selection Criteria ◽  
Climate Changes ◽  
Sublethal Effects ◽  
Life Stage ◽  
Migration Route ◽  
Relative Importance ◽  
Patchy Distribution ◽  
Multiple Cues ◽  
Fish Distributions

Migrating animals rely on a variety of cues to guide them, but the relative importance of those signals may vary with size, life stage, or location. During their initial ocean migration, yearling Chinook salmon (Oncorhynchus tshawytcha) from the Columbia River have stock-specific spatial distributions that shift through time. We used a two-process mixture model to examine how the distribution of yearling migrants from three Chinook salmon stocks varies as a function of geospatial (e.g., latitude and distance from shore) and environmental (e.g., chlorophyll a and temperature) covariates. In this framework, one process described the probability of being inside the spatial, temporal, and environmental boundaries of the migration route, and one process described the patchy distribution of salmon abundance within that route. We found that both environmental and geospatial covariates explained substantial portions of observed spatial patterns in abundance, suggesting that these stocks responded to multiple cues during migration. However, model selection criteria indicated that fish distributions were more affected by geospatial than by environmental covariates. We conclude that during migration, behavioral responses to environmental variation are secondary to responses to geospatial variation, sometimes resulting in suboptimal environmental conditions. This may have sublethal effects on growth and could ultimately influence stock-specific responses to broad-scale climate changes.

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