Carbon Credit Systems in Alberta Agriculture

The Pan-Canadian Framework was implemented in 2016 to help meet emission reduction targets set out by the Paris Agreement. Carbon pricing is at the foundation of this framework, where Alberta has used a carbon-credit market to reduce emissions from large-scale emitters. Agricultural producers voluntarily participate in these markets through agricultural carbon offset protocols; regulated emitters can purchase agricultural carbon credits to meet their emission reduction requirements. The main goal of these agricultural protocols is to reduce on-farm emissions through the adoption of best management practices (BMPs), alongside providing producers with the potential benefit of earning additional revenue by selling carbon credits on the market. While producers have participated in the market for quite some time, the impact of the market on Alberta agricultural producers is unknown. The main objective of this paper is to understand this impact by analyzing two considerations: 1) emission reductions (or removals) from agricultural protocols; and 2) economic benefits to producers from participating in the carbon offset market. After a case study of current agricultural carbon offset protocols, the results suggest producers are mainly participating for the economic benefits stemming from the adoption of BMPs, rather than the potential revenue from selling carbon credits on the market. Results also show protocols have high emission reduction potential, but this analysis was limited due to a lack of publicly available data. The most significant observation is that the majority of protocol emission reductions come from one protocol, the Conservation Cropping Protocol. The remaining agricultural protocols have seen minimal uptake in participation, specifically from livestock producers, which is concerning given the retirement of the Conservation Cropping Protocol on December 31, 2021. The main consideration will be addressing current protocol shortcomings to ensure producers are willing and able to participate in the market

Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon

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Carbon Credit Systems in Alberta Agriculture

The Pan-Canadian Framework was implemented in 2016 to help meet emission reduction targets set out by the Paris Agreement. Carbon pricing is at the foundation of this framework, where Alberta has used a carbon-credit market to reduce emissions from large-scale emitters. Agricultural producers voluntarily participate in these markets through agricultural carbon offset protocols; regulated emitters can purchase agricultural carbon credits to meet their emission reduction requirements. The main goal of these agricultural protocols is to reduce on-farm emissions through the adoption of best management practices (BMPs), alongside providing producers with the potential benefit of earning additional revenue by selling carbon credits on the market. While producers have participated in the market for quite some time, the impact of the market on Alberta agricultural producers is unknown. The main objective of this paper is to understand this impact by analyzing two considerations: 1) emission reductions (or removals) from agricultural protocols; and 2) economic benefits to producers from participating in the carbon offset market. After a case study of current agricultural carbon offset protocols, the results suggest producers are mainly participating for the economic benefits stemming from the adoption of BMPs, rather than the potential revenue from selling carbon credits on the market. Results also show protocols have high emission reduction potential, but this analysis was limited due to a lack of publicly available data. The most significant observation is that the majority of protocol emission reductions come from one protocol, the Conservation Cropping Protocol. The remaining agricultural protocols have seen minimal uptake in participation, specifically from livestock producers, which is concerning given the retirement of the Conservation Cropping Protocol on December 31, 2021. The main consideration will be addressing current protocol shortcomings to ensure producers are willing and able to participate in the market

Carbon Credit Systems in Alberta Agriculture

The Pan-Canadian Framework was implemented in 2016 to help meet emission reduction targets set out by the Paris Agreement. Carbon pricing is at the foundation of this framework, where Alberta has used a carbon-credit market to reduceemissions from large-scale emitters. Agricultural producers voluntarily participate in these markets through agricultural carbon offset protocols; regulated emitters can purchase agricultural carbon credits to meet their emission reduction requirements. The main goal of these agricultural protocols is to reduce on-farm emissions through the adoption of best management practices (BMPs), alongside providing producers with the potential benefit of earning additional revenue by selling carbon credits on the market. While producers have participated in the market for quite some time, the impact of the market on Alberta agricultural producers is unknown. The main objective of this paper is to understand this impact by analyzing two considerations: 1) emission reductions (or removals) from agricultural protocols; and 2) economic benefits to producers from participating in the carbon offset market. After a case study ofcurrent agricultural carbon offset protocols, the results suggest producers are mainly participating for the economic benefits stemming from the adoption of BMPs, rather than the potential revenue from selling carbon credits on the market. Results also show protocols have high emission reduction potential, but this analysis was limited due to a lack of publicly available data. The most significant observation is that the majority of protocol emission reductions come from one protocol, the Conservation Cropping Protocol. The remaining agricultural protocols have seen minimal uptakein participation, specifically from livestock producers, which is concerning given the retirement of the Conservation Cropping Protocol on December 31, 2021. The main consideration will be addressing current protocol shortcomings to ensure producers are willing and able to participate in the market

Multifaceted framework for defining conservation units: An example from Atlantic salmon (Salmo salar) in Canada

Abstract Conservation units represent important components of intraspecific diversity that can aid in prioritizing and protecting at‐risk populations, while also safeguarding unique diversity that can contribute to species resilience. In Canada, identification and assessments of conservation units is done by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC). COSEWIC can recognize conservation units below the species level (termed “designatable units”; DUs) if the unit has attributes that make it both discrete and evolutionarily significant. There are various ways in which a DU can meet criteria of discreteness and significance, and increasing access to “big data” is providing unprecedented information that can directly inform both criteria. Specifically, the incorporation of genomic data for an increasing number of non‐model species is informing more COSEWIC assessments; thus, a repeatable, robust framework is needed for integrating these data into DU characterization. Here, we develop a framework that uses a multifaceted, weight of evidence approach to incorporate multiple data types, including genetic and genomic data, to inform COSEWIC DUs. We apply this framework to delineate DUs of Atlantic salmon (Salmo salar, L.), an economically, culturally, and ecologically significant species, that is also characterized by complex hierarchical population structure. Specifically, we focus on an in‐depth example of how our approach was applied to a previously data limited region of northern Canada that was defined by a single large DU. Application of our framework with newly available genetic and genomic data led to subdividing this DU into three new DUs. Although our approach was developed to meet criteria of COSEWIC, it is widely applicable given similarities in the definitions of a conservation unit

Data from: Fine-scale temperature associated genetic structure between inshore and offshore populations of sea scallop (Placopecten magellanicus)

In the northwest Atlantic Ocean, sea scallop (Placopecten magellanicus) have been characterized by a latitudinal genetic cline with a breakpoint between northern and southern genetic clusters occurring at ~45°N along eastern Nova Scotia, Canada. Using 96 diagnostic single nucleotide polymorphisms (SNPs) capable of discriminating between northern and southern clusters, we examined fine-scale genetic structure of scallops among 27 sample locations, spanning the largest geographic range evaluated in this species to date (~37-51°N). Here, we confirmed previous observations of northern and southern groups, but we show that the boundary between northern and southern clusters is not a discrete latitudinal break. Instead, at latitudes near the previously described boundary, we found unexpected patterns of fine-scale genetic structure occurring between inshore and offshore sites. Scallops from offshore sites, including St. Pierre Bank and the eastern Scotian Shelf, clustered with southern stocks, whereas inshore sites at similar latitudes clustered with northern stocks. Our analyses revealed significant genetic divergence across small spatial scales (i.e., 129 to 221 km distances), and that spatial structure over large and fine scales was strongly associated with temperature during seasonal periods of thermal minima. Clear temperature differences between inshore and offshore locations may explain the fine-scale structuring observed, such as why southern lineages of scallop occur at higher latitudes in deeper, warmer offshore waters. Our study supports growing evidence that fine-scale population structure in marine species is common, often environmentally associated, and that consideration of environmental and genomic data can significantly enhance the identification of marine diversity and management units

Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon

Gene flow between wild and domestic populations has been repeatedly demonstrated across a diverse range of taxa. Ultimately, the genetic impacts of gene flow from domestic into wild populations depend both on the degree of domestication and the original source of the domesticated population. Atlantic salmon, Salmo salar, used in North American aquaculture are ostensibly of North American origin. However, evidence of European introgression into North American aquaculture salmon has accumulated in recent decades, even though the use of diploid European salmon has never been approved in Canada. The full extent of such introgression as well as the potential impacts on wild salmon in the Northwest Atlantic remains uncertain. Here, we extend previous work comparing North American and European wild salmon (n = 5799) using a 220 K SNP array to quantify levels of recent European introgression into samples of domestic salmon, aquaculture escapees, and wild salmon collected throughout Atlantic Canada. Analysis of North American farmed salmon (n = 403) and escapees (n = 289) displayed significantly elevated levels of European ancestry by comparison with wild individuals (p < 0.001). Of North American farmed salmon sampled between 2011 and 2018, ~17% had more than 10% European ancestry and several individuals exceeded 40% European ancestry. Samples of escaped farmed salmon similarly displayed elevated levels of European ancestry, with two individuals classified as 100% European. Analysis of juvenile salmon collected in rivers proximate to aquaculture locations also revealed evidence of elevated European ancestry and larger admixture tract in comparison to individuals collected at distance from aquaculture. Overall, our results demonstrate that even though diploid European salmon have never been approved for use in Canada, individuals of full and partial European ancestry have been in use over the last decade, and that some of these individuals have escaped and hybridized in the wild

Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon

Gene flow between wild and domestic populations has been repeatedly demonstrated across a diverse range of taxa. Ultimately, the genetic impacts of gene flow from domestic into wild populations depend both on the degree of domestication and the original source of the domesticated population. Atlantic salmon, Salmo salar, used in North American aquaculture are ostensibly of North American origin. However, evidence of European introgression into North American aquaculture salmon has accumulated in recent decades, even though the use of diploid European salmon has never been approved in Canada. The full extent of such introgression as well as the potential impacts on wild salmon in the Northwest Atlantic remains uncertain. Here, we extend previous work comparing North American and European wild salmon (n = 5799) using a 220 K SNP array to quantify levels of recent European introgression into samples of domestic salmon, aquaculture escapees, and wild salmon collected throughout Atlantic Canada. Analysis of North American farmed salmon (n = 403) and escapees (n = 289) displayed significantly elevated levels of European ancestry by comparison with wild individuals (p < 0.001). Of North American farmed salmon sampled between 2011 and 2018, ~17% had more than 10% European ancestry and several individuals exceeded 40% European ancestry. Samples of escaped farmed salmon similarly displayed elevated levels of European ancestry, with two individuals classified as 100% European. Analysis of juvenile salmon collected in rivers proximate to aquaculture locations also revealed evidence of elevated European ancestry and larger admixture tract in comparison to individuals collected at distance from aquaculture. Overall, our results demonstrate that even though diploid European salmon have never been approved for use in Canada, individuals of full and partial European ancestry have been in use over the last decade, and that some of these individuals have escaped and hybridized in the wild