scholarly journals Sustainable Conservation and Use of Chum Salmon under Warming Climate and Changing Ocean Conditions

2019 ◽  
pp. 109-112
Author(s):  
Masahide Kaeriyama
Keyword(s):  
Chum Salmon ◽  
Warming Climate ◽  
Ocean Conditions ◽  
Sustainable Conservation

scholarly journals Adapting Hokkaido Hatchery Strategies to Regional Ocean Conditions Can Improve Chum Salmon Survival and Reduce Variability

2016 ◽  
Vol 6 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Mitsuhiro Nagata ◽  
Yasuyuki Miyakoshi ◽  
Makoto Fujiwara ◽  
Kiyoshi Kasugai ◽  
Daisei Ando ◽  
...  
Keyword(s):  
Chum Salmon ◽  
Ocean Conditions

scholarly journals Adapting Hokkaido Hatchery Strategies to Regional Ocean Conditions Can Improve Chum Salmon Survival and Reduce Variability

2016 ◽  
Vol 6 (1) ◽  
pp. 73-85
Author(s):  
Mitsuhiro Nagata ◽  
Yasuyuki Miyakoshi ◽  
Makoto Fujiwara ◽  
Kiyoshi Kasugai ◽  
Daisei Ando ◽  
...  
Keyword(s):  
Chum Salmon ◽  
Ocean Conditions

Review of Certain Environmental Factors Affecting the Production of Pink and Chum Salmon

1958 ◽  
Vol 15 (5) ◽  
pp. 1103-1126 ◽  
Author(s):  
W. P. Wickett
Keyword(s):  
Environmental Factors ◽  
Preliminary Data ◽  
Chum Salmon ◽  
Environmental Changes ◽  
Early Stage ◽  
Factors Affecting ◽  
Stream Discharge ◽  
Ocean Conditions

The relation between stock and numbers of spawners is obscured by annual environmental changes. Stream discharge at the time the spawners are migrating upstream, at the time when the eggs are in the early stage of incubation, and extreme discharge during the period eggs and alevins are in the gravel can impose an 8-fold variation in the stock resulting from a given number of spawners in one area. Ocean conditions soon after the fry enter the sea have been observed to increase or decrease survival by a factor of 3. The density of spawners that produces the greatest numbers of fry is related to the average permeability of the stream bottom. Preliminary data indicate that more spawners could be used to advantage in most areas of the coast.

Modelling ecosystem adaptation and dangerous rates of global warming

2019 ◽  
Vol 3 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Rebecca Millington ◽  
Peter M. Cox ◽  
Jonathan R. Moore ◽  
Gabriel Yvon-Durocher
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Diffusion Rate ◽  
Individual Species ◽  
Genetic Evolution ◽  
Rates Of Change ◽  
Rapid Climate Change ◽  
Warming Climate ◽  
Intraspecies Competition ◽  
High Trait

Abstract We are in a period of relatively rapid climate change. This poses challenges for individual species and threatens the ecosystem services that humanity relies upon. Temperature is a key stressor. In a warming climate, individual organisms may be able to shift their thermal optima through phenotypic plasticity. However, such plasticity is unlikely to be sufficient over the coming centuries. Resilience to warming will also depend on how fast the distribution of traits that define a species can adapt through other methods, in particular through redistribution of the abundance of variants within the population and through genetic evolution. In this paper, we use a simple theoretical ‘trait diffusion’ model to explore how the resilience of a given species to climate change depends on the initial trait diversity (biodiversity), the trait diffusion rate (mutation rate), and the lifetime of the organism. We estimate theoretical dangerous rates of continuous global warming that would exceed the ability of a species to adapt through trait diffusion, and therefore lead to a collapse in the overall productivity of the species. As the rate of adaptation through intraspecies competition and genetic evolution decreases with species lifetime, we find critical rates of change that also depend fundamentally on lifetime. Dangerous rates of warming vary from 1°C per lifetime (at low trait diffusion rate) to 8°C per lifetime (at high trait diffusion rate). We conclude that rapid climate change is liable to favour short-lived organisms (e.g. microbes) rather than longer-lived organisms (e.g. trees).

Elucidating the Consequences of a Warming Climate for Common Bat Species in North-Western Europe

2020 ◽  
Vol 21 (2) ◽  
pp. 359
Author(s):  
Niamh Roche ◽  
Steve Langton ◽  
Tina Aughney ◽  
Deirdre Lynn ◽  
Ferdia Marnell
Keyword(s):  
Western Europe ◽  
Warming Climate ◽  
North Western

Planning for the future

2018 ◽  
Author(s):  
Karen J. Esler ◽  
Anna L. Jacobsen ◽  
R. Brandon Pratt
Keyword(s):  
Best Practice ◽  
Integrated Management ◽  
Biodiversity Loss ◽  
Future Climate Change ◽  
Land Sharing ◽  
Land Protection ◽  
Land Sparing ◽  
Habitat Conversion ◽  
Sustainable Conservation ◽  
Terrestrial Biomes

Mediterranean-type climate (MTC) regions are highlighted in several global analyses of conservation risk and priorities. These regions have undergone high levels of habitat conversion and yet of all terrestrial biomes they have the second lowest level of land protection. With transformation pressures set to continue (Chapter 8), planning for a sustainable conservation future in MTC regions is therefore essential. Conservation activities are represented by a variety of philosophies and motives, partially driven by the underlying differences in transformation drivers and sociopolitical contexts across MTC regions. These activities include investment in, and best-practice management of, protected areas (land sparing), an interdisciplinary focus on integrated management of production landscapes (land sharing; stewardship), as well as ecological restoration to increase habitat, improve connectivity, and provide a hedge against the impacts of future climate change. These responses need to be applied in a strategic, synergistic manner to minimize future biodiversity loss.

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