Biological response to climate change in the Arctic Ocean: the view from the past

Cronin, Thomas M.; Cronin, Matthew A.

doi:10.1007/s41063-015-0019-3

Cited by 13 publications

(8 citation statements)

References 187 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During glacial maxima, such as the LGM, the Arctic and much of the adjacent continents and oceans were covered with massive ice sheets, thick ice-shelves, and perennial sea-ice, making them virtually uninhabitable to most coastal species 46 – 49 . At the height of LGM, when the sea-level was ca.…”

Section: Discussionmentioning

confidence: 99%

Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

Neiva

Paulino

Nielsen

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s. l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s. l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.

show abstract

Section: Discussionmentioning

confidence: 99%

Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

Neiva

Paulino

Nielsen

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Hybridization is often viewed as having negative consequences on biodiversity (Edmands 2007), given its potential to break up coadapted gene complexes for local adaptations (Barton and Hewitt 1989); however, introgression can also provide benefits by creating genetic and phenotypic variation that may give individuals a fitness advantage (Pardo-Diaz et al 2012, Dowling et al 2016, Hanemaaijer et al 2018. Such benefits become especially relevant in regions such as the Arctic Ocean which are facing widescale habitat modifications (Cronin and Cronin 2015) that are expected to change reproductive interactions among species (Garroway et al 2009, Chunco 2014) and ultimately impact community-wide dynamics (Farkas et al 2015, Canestrelli et al 2017). However, predicting the outcomes and attributing drivers of hybridization (e.g., ocean warming) is difficult (Potts et al 2014), primarily due to the lack of baseline assessments.…”

Section: Introductionmentioning

confidence: 99%

Low levels of hybridization between sympatric cold-water-adapted Arctic cod and Polar cod in the Beaufort Sea confirm genetic distinctiveness

et al. 2022

View full text Add to dashboard Cite

As marine ecosystems respond to climate change and other stressors, it is necessary to evaluate current and past hybridization events to gain insight on the outcomes and drivers of such events. Ancestral introgression within the gadids has been suggested to allow cod to inhabit a variety of habitats. Little attention has been given to contemporary hybridization especially within cold-water adapted cod (Boreogadus saida and Arctogadus glacialis). We used whole-genome, restriction-site associated, and mitochondrial sequence data to explore the degree and direction of hybridization between these species where previous hybridization had not been reported. Although nearly identical morphologically at certain life stages, we detected very distinct nuclear and mitochondrial lineages. We detected one potential hybrid with a Arctogadus mitochondrial haplotype and Boreogadus nuclear genotype, but no early generational hybrids. The presence of a late generation hybrid suggests that at least some hybrids survive to maturity and reproduce. However, a historical introgression event could not be excluded. Contemporary gene flow appears asymmetrical from Arctogadus into Boreogadus which may be due to overlap in timing of spawning, environmental heterogeneity, or differences in population size. This study provides important baseline information for the degree of potential hybridization between these species within Alaska marine environments.

show abstract

“…The Arctic is undergoing a sound transformation, affecting climate [1] and ocean temperature [2], sea ice extent [3], and terrestrial and marine biodiversity [4,5], driven by the Arctic amplification phenomenon [6][7][8]. Our understanding of long-term climate change effects on the Arctic water cycle is deduced from observations and reanalysis data [9], and relies heavily on existing forecasting and modeling experience, together with general assumptions elaborated mostly for temperate regions [10,11].…”

Section: Introductionmentioning

confidence: 99%

Permafrost Hydrology Research Domain: Process-Based Adjustment

2020

View full text Add to dashboard Cite

Permafrost hydrology is an emerging discipline, attracting increasing attention as the Arctic region is undergoing rapid change. However, the research domain of this discipline had never been explicitly formulated. Both ‘permafrost’ and ‘hydrology’ yield differing meanings across languages and scientific domains; hence, ‘permafrost hydrology’ serves as an example of cognitive linguistic relativity. From this point of view, the English and Russian usages of this term are explained. The differing views of permafrost as either an ecosystem class or a geographical region, and hydrology as a discipline concerned with either landscapes or generic water bodies, maintain a language-specific touch of the research in this field. Responding to a current lack of a unified approach, we propose a universal process-based definition of permafrost hydrology, based on a specific process assemblage, specific to permafrost regions and including: (1) Unconfined groundwater surface dynamics related to the active layer development; (2) water migration in the soil matrix, driven by phase transitions in the freezing active layer; and (3) transient water storage in both surface and subsurface compartments, redistributing runoff on various time scales. This definition fills the gap in existing scientific vocabulary. Other definitions from the field are revisited and discussed. The future of permafrost hydrology research is discussed, where the most important results would emerge at the interface between permafrost hydrology, periglacial geomorphology, and geocryology.

show abstract

Biological response to climate change in the Arctic Ocean: the view from the past

Cited by 13 publications

References 187 publications

Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

Low levels of hybridization between sympatric cold-water-adapted Arctic cod and Polar cod in the Beaufort Sea confirm genetic distinctiveness

Permafrost Hydrology Research Domain: Process-Based Adjustment

Contact Info

Product

Resources

About