Fall 2021 Series: Register Now!

We are excited to announce the Fall 2021 schedule – Click here

Webinars will run from 12:00 – 1:00 Mountain Time. Don’t worry if you can’t make it; recordings will be posted here for viewing.

In this bi-weekly webinar series, audience members from across Canada and diverse organizations join us to explore the latest research and Indigenous ways of knowing regarding caribou ecology and recovery in Canada—from the mechanisms of caribou declines to potential recovery options.

For recordings of previous webinars, scroll down:

Fall 2021 recordings:

The National Boreal Caribou Knowledge Consortium – Advancing conservation through collaborative knowledge sharing, generation and mobilization

Tatyana Flick and Matthew Boeckner

The National Boreal Caribou Knowledge Consortium (NBCKC), which launched in 2018 under Canada’s federal action plan for boreal caribou, is a forum for collaborative knowledge sharing, knowledge generation, and knowledge mobilization to support boreal caribou conservation and recovery. Members of the NBCKC represent federal, provincial and territorial governments, Wildlife Co-Management Boards, Indigenous Peoples, communities and organizations, industry, environmental non-governmental organizations, and academic researchers. This initiative brings together a diverse network of knowledge holders, practitioners and decision makers to inform action through its Working Groups, the Indigenous Knowledge Circle, and by developing tools such as the Canadian Conservation and Land Management (CCLM) Knowledge Portal. In this webinar we will introduce the NBCKC, highlight the power of collaboration and the unique opportunities that emerge when people commit to working together to leverage our collective strengths for conservation action. To learn more about the NBCKC and how you can get involved email the NBCKC Secretariat at cnscb-nbckc@ec.gc.ca .

Follow this link to begin exploring the repository of newsletters, guidance documents, best practices, tool kits and other resources that have been developed collaboratively by the NBCKC and housed on the CCLM boreal caribou sub-portal.

A Holistic Approach to Restoration in FNFN Territory: By Us, For Us

Katherine Wolfenden, Jesse Tigner, and Susan Leech

Climate change is expected to increasingly impact populations of woodland caribou and much focus has been placed on how a warming climate has facilitated the northward expansion of apparent competitors (e.g., white-tailed deer) and novel predators (e.g., coyotes). Climate change, however, may also exert effects on caribou populations that are not mediated by predation. Here, we used data from 21 populations in western Canada to assess the demographic response of woodland caribou to annual variation in a suite of meteorological and phenological metrics. Caribou populations in Canada and globally are declining as a result of several factors. In western Canada, boreal caribou declines are ultimately driven primarily by industrial land uses within and adjacent to caribou range. These areas also overlap traditional lands of Indigenous communities, who have stewarded their territories and all the values contained within them for generations. Despite this long-held role, ecological and conservation perspectives generally focus on the science of caribou recovery, without considering the complexities and nuances of First Nations’ perspectives of land and species conservation, or the economic opportunities and ramification of land use, policy, and conservation decisions.

In this talk we discuss ongoing caribou conservation and restoration projects undertaken by us, the Fort Nelson First Nation. Specifically, we will focus on three main themes in this talk. First, from a policy and governance perspective, we will discuss how several projects came to be within the context of Federal and provincial caribou policy, and how and why conservation decisions were made from the FNFN perspective. Second, from a nuts and bolts perspective, we will discuss practical delivery of habitat restoration treatments in remote locations in winter and summer seasons, economic opportunities generated from a restoration economy, and local partnerships created to generate new business opportunities. Third, we will discuss results and outcomes of vegetation and wildlife response to restoration activities, including variation in vegetation response to summer and winter restoration deliveries and treatments. We will conclude with our broader vision and next steps in ongoing restoration.

Previous sessions:

Demographic responses of threatened woodland caribou to annual variation in meteorological and phenological conditions

Craig DeMars

Climate change is expected to increasingly impact populations of woodland caribou and much focus has been placed on how a warming climate has facilitated the northward expansion of apparent competitors (e.g., white-tailed deer) and novel predators (e.g., coyotes). Climate change, however, may also exert effects on caribou populations that are not mediated by predation. Here, we used data from 21 populations in western Canada to assess the demographic response of woodland caribou to annual variation in a suite of meteorological and phenological metrics. Recent research on other ungulate populations suggests that climatic variation may have minimal direct impact on low-density populations such as woodland caribou because per-capita resources may remain sufficient even in “bad” years. We tested this prediction by relating climatic variation to juvenile recruitment and adult female survival, two vital rates with high influence on caribou demography. Contrary to the low-density/low-impact prediction, we recorded relatively strong effects in both rates, though explained variation across all demographic models was low, suggesting that factors other than adverse climatic conditions had a greater influence on caribou demography during our monitoring period (1994–2015). In general, juvenile recruitment was more affected by variation in growing season conditions in the year prior to birth, responding positively to longer, more productive growing seasons and negatively to those that were warmer and drier. Adult female survival, in contrast, was more affected by winter conditions, responding negatively to colder and more variable winters during the monitoring year and up to three years prior. Given these unexpected results, we discuss alternative explanations as to why these woodland caribou populations did not conform to the low-density/low-impact prediction. The demographic effects we recorded have direct implications for caribou conservation, highlighting the increased relevance of recovery actions when adverse climatic conditions are more likely to negatively affect caribou demography.

Wild forest reindeer returns to its historical range – first releases from breeding enclosures in a Finnish reintroduction project

Sakari Mykrä-Pohja, Milla Niemi & Pekka Kilpeläinen

The Finnish wild forest reindeer Rangifer tarandus fennicus occurred throughout Finland still in the 17th century. It was gradually hunted to nationwide extinction by the 1920s but started to re-establish in the 1950s. Nowadays it occurs in Finland and the Western parts of Russia. The total world population is about 4000 individuals. The overall trend has been negative. In 2016, Finland and the EU started a seven-year conservation project WildForestReindeerLIFE. One of the actions is a new reintroduction into two areas in the subspecies’ historical range. This will be carried out through captive breeding and soft releases. Founders both from zoos and from the wild have been moved into two enclosures since autumn 2017. The first calves were born in May 2018. During the autumn 2019, we released 17 individuals of varying age and origin. Eight of them were born in the enclosures. Based on the GPS-tracking, camera traps and field observations, the released animals have mainly stayed close (< 1 km) to the enclosures. In one site, young males made two short-term explorative trips about 20 km distance from the enclosure. In the other site, adult zoo-born female with her calf explored the landscape for some days before settling down near the enclosure. Especially young zoo-born males have been tamer than expected. Near the breeding enclosures, their flight distance could be as short as a few meters, whereas away from the enclosure it appears to be longer. We’ll follow the behavior of released animals in the coming years.

Seasonal patterns of mortality for boreal caribou in the southern Northwest Territories

Allicia Kelly

Seasonality is an important component in shaping the dynamics that influence ecosystems, including mortality. We investigated temporal patterns of mortality in the boreal ecotype of woodland caribou (Rangifer tarandus caribou) in the southern Northwest Territories. Survival data were collected from 423 adult female caribou tracked by radio collars between 2003 and 2018, 172 of which died during the study from predation (106), non-predation (i.e., starvation), (15), harvest (11), accidents (3), or unknown causes (37). We used generalized additive mixed models to evaluate temporal patterns of mortality across the year. We found that probability of mortality followed a trimodal pattern with three peaks, one during pre-calving, one in mid-summer, and a smaller peak in late autumn, with a 6-fold difference in mortality risk between the lowest and highest periods of the year. Mortality risk was higher overall from late spring (pre-calving) to mid-summer than it was from late summer until the end of winter, despite decreasing for about 6 weeks post-calving. We explored potential factors contributing to mortality risk at different times of the year.

Recovery actions for woodland caribou: Predicting and testing the efficacy of habitat restoration

Melanie Dickie

Anthropogenic habitat alteration via land conversion directly reduces habitat availability and disrupts ecological processes. Western Canada’s boreal forest has undergone rapid landscape change as a result of human expansion and resource development. Resulting habitat loss and alteration is hypothesized to be the ultimate cause of boreal woodland caribou declines, one of the most high-profile species at risk in Canada’s boreal forest. While a variety of recovery actions are being employed to recover caribou populations, habitat restoration has been identified as a necessary and important management tool. Restoration is required to restore ecological processes to address the ultimate cause of caribou declines, habitat loss and alteration, as well as the proximate cause, unsustainable predation rates as a result of human-mediated changes to predator-prey dynamics. While the importance of conducting habitat restoration is clear, the effectiveness of restoration treatments is not well understood. Given the spatial extent of these disturbances and the cost of habitat restoration treatments, it behooves researchers and managers to predict and monitor the effectiveness of restoration treatments. Here we explore the predicted success of restoration for recovering caribou populations using predator-prey simulations, and empirically test the effectiveness of restoration treatments. We present a multiple-lines-of-evidence approach for understanding caribou, moose, wolf and bear response to habitat restoration treatments aimed to restore the functional and ecological processes in northeastern Alberta. Understanding behavioral and population-level responses to restoration treatments is necessary to ensure successful recovery and adaptive management.

Indigenizing Science

Morgan Hrycak

Environmental and biological sciences are often siloed from examining Indigenous-related concerns, which can compromise Indigenous rights. Learning about braiding Indigenous ways of knowing and Western Science can be an invaluable way to strengthen relationships and facilitate project support (e.g. on caribou conservation projects). This presentation series will provide perspectives on Indigenous Knowledge and bioethics, decolonizing genomic science, and harvesting rights.

• Part 1: Perspectives on Bioethics and Research Implications will focus on examples of Indigenous Knowledge, bioethical considerations of scientific research, governance of Indigenous community data, and science communication principles. By knowing these topics, Western scientists can better understand Indigenous concerns on-the-ground. For more information about references used in this presentation, please see the References for Indigenizing Science-Bioethics and Research Implications.
• Part 2: Chronic Wasting Disease will focus on the decolonization of genomic science, harvesting rights, and the science behind prion diseases. Chronic wasting disease is a fatal nervous system disorder affecting cervids, such as deer and moose. However, Canada’s caribou populations are considered at high risk for this disease. Due to Indigenous connections to the land, understanding chronic wasting disease from Indigenous perspectives can help in understanding and managing the spread of this disease.

Movement, energetics, and demography of Norwegian reindeer

Rebecca Viejou

In Norway, reindeer are fragmented into roughly 23 wild populations and 76 semi-domestic herding districts.  The variation in forage quantity, migratory behaviour, and demography across these populations provide an opportunity to examine the causes and consequences of migration.  In this presentation, I will summarize the results of three studies with the following research goals:

1. Use forage biomass, digestibility and energy data, and previously defined landscape models of vegetation and geoclimatic variation to develop maps of summer and winter digestible energy across Norwegian reindeer ranges.
2. Use GPS locations of 304 wild reindeer trajectories to test a series of predictions that follow from the forage quantity hypothesis for migration.
3. Use 15 years of population data for 43 semi-domestic herding districts to test the basic assumption that migrations provide a demographic benefit.

The results of this work suggest that access to winter ranges with high digestible energy may be an important driver of the large-scale seasonal movements of reindeer, with measurable demographic consequences.

Science to inform policy: Linking population dynamics to habitat for threatened species in Canada

Cheryl Johnson

You can find the published manuscript for this presentation here.

Boreal forests provide numerous ecological services, including the ability to store large amounts of carbon, and are of significance to global biodiversity. Increases in industrial activities in boreal landscapes since the mid‐20th century have added to concerns over biodiversity loss and climate change. Boreal forests are home to dwindling populations of boreal caribou Rangifer tarandus caribou in Canada, a species at risk that requires large, undisturbed landscapes for persistence. In 2012, the Canadian government defined critical habitat for boreal caribou by relating calf recruitment to disturbances. Some have questioned whether the recruitment relationship can be extrapolated beyond the environmental conditions represented in the analysis.

We examined the effects of human disturbances and fire (alone and in combination) on variation in recruitment and adult female survival using data from 58 study areas in Canada. Top models were used in aspatial scenarios of landscape change to evaluate the efficacy of the critical habitat definition in achieving the recovery objectives for boreal caribou in two contrasting landscapes: Little Smoky, dominated by high levels of human disturbances, and the northern boreal shield of Saskatchewan (SK1), dominated by fire.

The top recruitment model suggested the negative effect of fire was three to four times smaller than human disturbances. The top adult female survival model included human disturbances only. These results re‐affirm that human disturbances are the primary factor contributing to boreal caribou declines.

Our aspatial scenarios suggested that undisturbed habitat would have to increase to ≥68% for Little Smoky to maintain a self‐sustaining population of boreal caribou with some degree of certainty. In contrast, the SK1 population was self‐sustaining with 40% undisturbed habitat when fire disturbance predominates, but could become vulnerable with increases in human disturbances (8%–9%).

Policy implications. Boreal caribou are listed as threatened under Canada’s Species at Risk Act. Our results suggest that the 65% undisturbed critical habitat designation in Canada’s boreal caribou Recovery Strategy may serve as a reasonable proxy for achieving self‐sustaining populations of boreal caribou in landscapes dominated by human disturbances. However, some populations may be less or more vulnerable, as illustrated by the scenarios in a landscape dominated by fire (SK1). Continued population monitoring will be essential to assessing the effectiveness of land management strategies developed for boreal caribou recovery, especially with climate change.

Let it grow? Moose response to habitat disturbance in caribou ranges

Laura Finnegan

Boreal caribou winter range in the Central Mackenzie Valley, NWT: What is it, where is it, and how can we manage for it proactively?

Jesse Tigner

Using forecasting tools to inform recovery actions for woodland caribou: a comparison of the tested and the untested

Mariana Nagy-Reis & Chris Johnson

A recurring challenge for resource managers and decision makers is quantifying the trade-offs associated with alternative recovery actions for species-at-risk. Provincial and federal agencies have either employed or planned to employ recovery actions to halt precipitous declines in woodland caribou populations. Nonetheless, testing the efficacy of such actions on the ground is difficult due to insufficient time and limited replication. Here we showcase two modeling approaches developed independently to quantify trade-offs associated with tested and untested recovery actions for woodland caribou, including Linear Feature Restoration/Deactivation, Maternal Penning, Predator Exclosure, Conservation Breeding, Wolf Reduction, and Moose Reduction. More specifically, we compare the estimated costs and demographic benefits associated with each action and discuss knowledge gaps, limitations of tested recovery actions, and uncertainties associated with untested actions. The two case studies demonstrate the utility of forecasting tools to inform recovery actions and guide decisions by explicitly estimating trade-offs associated with actions, which ultimately can be used in structured-decision making approaches to help bridge the gap between management and science.

Application of integrated population models for conservation of at-risk caribou populations

Mark Hebblewhite

Population monitoring can take many different forms, and monitoring elusive and endangered species frequently involves a variety of sparse data from different sources. Small populations are often hard to sample precisely and without bias, so when estimates of vital rates like survival or recruitment point to conflicting population trends, it can be hard to determine which is more correct. Integrated Population Models (IPM) provide an applied statistical framework to reconcile different types of data together in a unified population model. IPM’s help reconcile discrepancies between different data types, missed years, and often lead to increased precision in trend estimates as well. IPM models can also be used to evaluate efficiency of recovery actions. Finally, the process of developing IPM’s also often improves the science of database management, sampling designs, and highlights challenging assumptions and ways of improving efficiency. In this webinar, we highlight three case studies of the application of IPM modeling to the question of trend monitoring of threatened or endangered caribou (Rangifer tarandus caribou) in Alberta, Jasper National Park, and the Central Group of Southern Woodland caribou. All three case studies brought together dozens of biologists, managers, data scientists, and modelers to developed customized Bayesian IPM models to aid trend estimation, and reconcile differences amongst conflicting trends from different data types. In Alberta, we developed a R Shiny App (Eacker et al. Wildlife Society Bulletin) to aid Alberta caribou biologists in the data management processes to efficiently estimate caribou trends across the province using the Hatter-Bergerud R-M Equation. In Jasper National Park, we worked with Park Biologists to integrate data from data from juvenile recruitment surveys, telemetry-based survival, aerial population counts/mark-resight data, and non-invasive capture-recapture DNA data to better understand population status and trend of the South Jasper Local Population Unit. Finally, in the Central Group, we worked with local biologists and First Nations to develop IPMs for the Quintette and Klinse Za that helped test for efficacy of management and recovery actions. IPMs provide a useful, flexible tool for biologists to monitor populations and provides a valuable example of the benefits of integrated population modeling approaches for endangered species management and recovery.

30 years of change: Linking habitat, predators and alternative prey to explain recruitment variations of an endangered caribou population

Martin-Hugues St-Laurent

Woodland caribou populations suffer from habitat modifications and most are currently in decline. It has been suggested that the conversion of old-growth coniferous forests into early-seral stages has increased cervid abundances, which have, in turn, stimulated a numerical response of predator populations, ultimately threatening caribou populations via a habitat-mediated apparent competition mechanism. Using a long-term dataset (1984-2012) of the Atlantic-Gaspésie caribou population, we quantified changes in habitat structure and in interspecific interactions triggered by apparent competition between moose and caribou via the responses of two incidental predators, coyote and black bear. We also documented calf recruitment rates and analysed temporal trends in this vital rate. Our results show that the loss of high-quality habitat for caribou in the area surrounding the Gaspésie National Park varied from -30 to -56%, while the gain of preferential habitat for predators varied from +3 to +66%, mainly driven by logging. Inter-annual variations in autumn calf recruitment were mostly affected by the proxy of regional abundance of coyotes, which was highly correlated with moose and black bear proxies of abundance. The increase in coyote abundance in the Gaspésie Peninsula following anthropogenic habitat modifications seems to be the main mechanism responsible for the current decline in this caribou population. Our analyses revealed some impacts of habitat alteration and the complexity of the resulting trophic cascades. Moreover, we pointed out that an 802-km2 protected area is not enough to prevent the decline of a caribou herd if we drastically increase the disturbance level in the surrounding matrix.

Density-dependent social behaviour: from individuals in groups to populations

Quinn Webber

Density dependence is a key population ecology parameter that can influence variation in life-history, morphology, and behaviour. Caribou population density is known to fluctuate through space and time. In Newfoundland, caribou occupy approximately 14 distinct sub-populations, and since the late 1990s, nearly all of these sub-populations have experienced declines in population size. In this talk, we outline three potential behavioural outcomes of the drastic change in population density observed for Newfoundland caribou. First, based on a thirty-year dataset of caribou group size observations collected during aerial surveys, we found that groups varied in size both spatially and temporally. In contrast to our expectation, groups decreased in size as a function of increasing population density, while groups tended to be larger in winter compared to summer, presumably as a result of seasonal access to foraging opportunities. Second, we examined the role of the social environment to determine whether reproductive success varies for caribou that form calving aggregations during parturition compared to those that give birth solitarily. We found that approximately 80% of caribou in the Middle Ridge herd give birth within a social calving aggregation, but there was no difference in reproductive success between animals that gave birth on, or off, the calving ground. However, when only considering caribou on the calving ground, we found that animals living closer to the periphery of the social aggregation had lower reproductive success than those at the core of the social aggregation. Finally, we found that social network strength and habitat specialization were density-dependent, while more social individuals were habitat generalists. However, habitat specialization had a greater effect on fitness, where habitat specialists had higher fitness than habitat generalists, but only at high density. Our work on caribou in Newfoundland addresses questions about the density and context dependence of social behaviour and provides a theoretical framework for future studies to address similar questions. We broadly integrate aspects diverse ecological fields, including socioecology, spatial ecology, movement ecology, and conservation biology.

Habitat loss on seasonal migratory range imperils an endangered ungulate: implications for redefining critical habitat for mountain caribou

Sara Williams

Using a telemetry location dataset spanning 1981 – 2018, we tested for changes in prevalence of migratory tactics (resident, migrant) over time, switching between tactics, shifts in seasonal space-use including migration corridors, and survival consequences of migrant and resident tactics for 237 adult female endangered woodland mountain caribou in one population in western Canada. Over more than three decades, the proportion of individuals displaying annual migration to the low elevation forested winter range declined from nearly 100% to 38%. Correspondingly, there was a strong switch away from being migrant to being year-round residents at high elevation. These behavioral changes corresponded to abandonment of low elevation winter ranges in association with increasing levels of anthropogenic land uses, including forestry and oil and gas developments. Furthermore, there were no identifiable migration corridors to target for migratory route protection. Shifts in migratory behavior translated to lower survival rates, particularly for caribou demonstrating resident tactics, consistent with recent declines of the caribou population. That migrants switched to residency in their largely undisturbed summer range, despite lower survival, indicates maladaptive habitat selection consistent with recent patterns of mountain caribou extirpations.

Continental and regional patterns in caribou resource selection across a wide gradient of fire frequency

Eric Palm

Boreal caribou living in an area shaped by natural disturbances: insights into the ecology and conservation of the species from where we know the least

Clara Superbie

The decline of boreal and mountain caribou (Rangifer tarandus caribou) is widely believed to be a result of anthropogenic and natural disturbance by means of disturbance-mediated apparent competition (DMAC). Here, landscape disturbance increases the abundance of browsing ungulates by reducing the seral age of forests, promoting predator numbers, and in turn heightening predation risk to caribou. However, research on the species has mostly focused on where caribou have been impacted by significant industrial disturbances, in relatively productive southern boreal and mountain systems. Yet, about 2/3 of the Canadian caribou population exists principally in northern taiga and shield habitat where logging is absent, and where other industrial activities are quasi-inexistent. In such wildfire-dominated ecoregions of low productivity, we know very little of how DMAC acts as a limiting factor to caribou. Here, we propose to summarize some of the results coming out of 6-years of research on the ecology of caribou living in the northern boreal shield of Saskatchewan. We propose to discuss if DMAC applies as a threat in this population and investigate how caribou and their predators respond to fire but extremely low levels of linear features. Put in perspectives with recently published studies on the topics, we raise questions about how to best protect northern caribou units which may serve as sources to southern caribou populations. Answers to these questions are important to both theoretical and applied ecology, including how we might improve caribou conservation.

Caribou habitat restoration: A trial in northeastern Alberta

Shannon O’Dwyer

Woodland caribou (Rangifer tarandus caribou) are a threatened species federally and provincially in Alberta. Habitat restoration is critical to maintaining suitable habitat to support healthy populations. Current reclamation criteria in Alberta do not support practices that facilitate the restoration of low productivity black spruce and lichen-dominated ecosystems which are important predator refuge and foraging habitats for caribou. At a steam assisted gravity drainage facility in northeastern Alberta, a trial program was developed to recover caribou habitat on six well sites in bog or fen habitats. The six sites underwent habitat restoration in 2014 with each site split into quadrants with four treatment types: i) inverted mound, planted with black spruce seedlings and transplanted reindeer lichen mats, ii) non-inverted mound, planted with black spruce seedlings and transplanted reindeer lichen mats, iii) planted black spruce seedlings and transplanted reindeer lichen mats, and iv) a control area with no mounding, planting or lichen transplantation. Results over three monitoring events have shown promising results. Success of the treatments was measured by health of lichen mats, height and density of seedlings, and overall ground cover of vegetation species. It was found that mounding treatments appear to be returning the OSE wells back to caribou habitat more quickly than the planting only and control treatments. Mounding treatments give planted black spruce seedlings a head start and have taller trees than the planting only treatment.

Partial Cutting: Changing the timber harvest paradigm in Alberta to conserve mountain caribou

Kirby Smith

Mountain caribou (Rangifer tarandus) are classified as threatened in Canada. In May of 2018, the Government of Canada released an “Imminent Threat Assessment for the Redrock/Prairie Creek and Narraway herds of mountain caribou in west central Alberta, the two most northerly mountain herds in Alberta. The Assessment stated that “the effects of the threats facing the species will make achieving the recovery objectives of the species highly unlikely or impossible without immediate intervention including population and habitat management measures”. These caribou winter ranges are considered 84% (Narraway) and 71% (Redrock/Prairie Creek) disturbed, well above the maximum of 35% recommended in the Recovery Strategy for Woodland Caribou, Southern Mountain populations (Environment Canada 2014). Based on results of a 19-year study that examined the effects of partial timber harvest on ground based flora (Vitt et al. 2019), an alternative to clear-cut logging is proposed to reduce the impact of this industrial activity on mountain caribou range. Partial cutting has the potential to maintain the forest in a perpetual “caribou-friendly” condition by preserving lichen cover while not enhancing browse, thereby significantly reducing “apparent competition” between mountain caribou and alternate prey species. Moreover, this approach could still provide logging opportunities with additional jobs while reducing impacts on other species of concern (i.e. grizzly bears, bull trout). Additional work is proposed to examine the socio-economic benefits/drawbacks of partial cutting.

Informing Woodland Caribou Habitat Restoration Strategies Through an Innovation Roadmap

Matthew Pyper

Restoration of legacy seismic lines within woodland caribou habitat has received considerable attention in the last seven years in western Canada. Restoration programs have successfully transitioned from testing techniques at an experimental scale to delivering operational scale programs of up to 350 km per year. However, restoration is extremely expensive, averaging $8,000-$16,000 per kilometre. Clearly, innovation is required to continue to advance operational implementation of restoration programs, and to achieve larger scale implementation at lower cost.
To help guide the identification of innovation opportunities for linear restoration, a series of organizations came together to fund a Restoration Innovation Roadmap. The goal was to facilitate adaptive management within restoration programs and to expedite learnings and efficiencies for future restoration programs. The first phase of this roadmap identified a total of eight key conclusions and opportunities to reduce costs and improve effectiveness were identified. These ranged from ecological knowledge related to successful tree re-establishment following restoration, to operational guidelines such as exploring opportunities to create new microsites using new implements to increase the efficiency and quality of treatments. The second phase identified a series of new technologies and techniques that could significantly increase the efficiency of restoration treatments, while maintaining or improving the ecological effectiveness. A total of 23 potential technologies or techniques were identified that could reduce the costs of restoration treatment delivery while maintaining or improving ecological effectiveness. The core observation from this study is that the cumulative impact of adopting multiple innovations could lead to a significant change in the way restoration programs could be delivered in the future.
The two papers resulting from this project can be accessed here:
https://www.cclmportal.ca/resource/restoration-innovation-roadmap-phase-1
https://www.cclmportal.ca/resource/restoration-innovation-roadmap-phase-2

A National Network of Adaptive Management and Trophic consequences of terrestrial eutrophication for a threatened ungulate

Robert Serrouya

This webinar has two components:

1. Launched in June 2018, the National Boreal Caribou Knowledge Consortium (NBCKC) is a forum for collaborative knowledge generation and sharing to support conservation and recovery of boreal caribou. Within the NCBCK, a population management working group was formed (PMWG), as a result of an action identified in the Federal Action Plan for Boreal Caribou. Population management includes actions intended to provide a relatively immediate benefit to caribou numbers, until the legacy of habitat distance diminishes as a result of habitat restoration and protection. The purpose of the PMWG is to discuss the breadth and efficacy of population management actions under various scenarios, and to rapidly disseminate information across jurisdictions.
2. Changes in primary productivity have the potential to substantially alter food webs, with positive outcomes for some species and negative outcomes for others. Understanding the environmental context and species traits that give rise to these divergent outcomes is a major challenge to the generality of both theoretical and applied ecology. In aquatic systems, nutrient-mediated eutrophication has led to major declines in species diversity, motivating us to seek terrestrial analogues using a large-mammal system across 598 000 km² of the Canadian boreal forest. These forests are undergoing some of the most rapid rates of land-use change on Earth and are home to declining caribou (Rangifer tarandus caribou) populations. Using satellite-derived estimates of primary productivity, coupled with estimates of moose (Alces alces) and wolf (Canis lupus) abundance, we used path analyses to discriminate among hypotheses explaining how habitat alteration can affect caribou population growth. Hypotheses included food limitation, resource dominance by moose over caribou, and apparent competition with predators shared between moose and caribou. Results support apparent competition and yield estimates of wolf densities (1.8 individuals 1000 km⁻²) above which caribou populations decline. Our multi-trophic analysis provides insight into the cascading effects of habitat alteration from forest cutting that destabilize terrestrial predator–prey dynamics. Finally, the path analysis highlights why conservation actions directed at the proximate cause of caribou decline have been more successful in the near term than those directed further along the trophic chain.

Indigenous-led Conservation: Pathways to recovery for the nearly extirpated Klinse-za mountain caribou

Clayton Lamb

Indigenous Peoples around the northern hemisphere have long relied on caribou for subsistence, ceremonial, and community purposes. Unfortunately, caribou are currently in decline in many areas across Canada. Caribou recovery efforts by Federal and Provincial agencies highlight a complex intersection of legal, economic, ecological, and human-rights issues. In response to recent and dramatic declines of mountain caribou populations within their traditional territory, the West Moberly First Nations and Saulteau First Nations (collectively, the ‘Nations’) came together to create a new vision for caribou recovery on the lands they have long stewarded. The Nations focused on the Klinse-Za subpopulation, which had once encompassed so many caribou that Elders remarked that they were “like bugs on the landscape”. The Klinse-Za caribou declined from >300 animals in the 1990’s to only 38 in 2013. In collaboration with Treaty 8 First Nations, Provincial and Federal governments, and scientists, this Indigenous-led conservation initiative paired short-term population recovery actions—predator reduction and maternal penning—with long-term habitat protection in an effort to create a self-sustaining caribou population. Here, we review these recovery actions and the promising evidence that the abundance of Klinse-Za caribou has more than doubled from 38 animals in 2013 to 89 in 2020, representing rapid population growth in response to recovery actions. With looming extirpation averted, the Nations focused efforts on securing a landmark conservation agreement in 2020 that protects caribou habitat over a 7,986 km2 area. The Partnership Agreement was signed in 2020. and the lands will be co-managed by the WMFN, SFN, and Provincial governments. The Agreement provides habitat protection for >85% of the Klinse-Za subpopulation (up from only 1.8% protected pre-conservation agreement) and affords moderate protection for neighboring caribou subpopulations (29-47% of subpopulation area, up from 0-20%). This Indigenous-led conservation initiative has set both the Indigenous and Canadian governments on the path to recover the Klinse-Za subpopulation and reinstate a culturally meaningful caribou hunt. This effort highlights how Indigenous governance and leadership can be the catalyst needed to establish meaningful conservation actions, enhance endangered species recovery, and honor cultural connections to now imperilled wildlife.

Supplemental feeding increases the growth rate of an endangered caribou herd

Doug Heard

Predation has both direct and indirect effects on prey. I considered the possibility that caribou population growth may be limited by summer food because they quit ‘surfing the green wave’, because of the increased risk of wolf predation at lower elevations. If that were the case, then supplemental feeding in might compensate for that limitation and contribute to population growth. To test that hypothesis, we fed high-quality food pellets to free-ranging caribou in the Kennedy Siding caribou herd in central BC, each fall for 7 years, starting in 2015. Beginning in 2016, the Province of British Columbia began a concurrent annual program to promote caribou population increase by attempting to remove most wolves within the Kennedy Siding and the adjacent caribou herds’ ranges. After 4 years, in the Kennedy Siding herd, when both feeding and wolf reduction occurred concurrently, lambda was 1.16 and in the Quintette herd, where the only management action was wolf reduction, lambda was1.08. The higher growth rate of the Kennedy Siding herd was due to higher cow survival (96.2%/yr vs. 88.9%/yr). During the 5th year of this experiment, the Kennedy Siding herd grew at a similar rate as before (λ=1.14) but the numbers in Quintette herd did not change (λ=1.01). On the surface those results lend further support to our previous conclusion that supplemental feeding increased herd growth. However, part of the increase in Kennedy Siding herd numbers may have been due to bulls coming from elsewhere.

New development in genomics methods to inform on caribou population demography

Micheline Manseau

Information on the size, distribution and trend of wildlife populations are key parameters when assessing the status of wildlife species. Quantifying the impacts of natural and anthropogenic activities on these dynamics is also essential in the development of recovery and restoration efforts. New methods using genetic data and advanced computing are becoming more accessible and very effective for studying sensitive species. Genetic data, most often obtained non-invasively by collecting fecal or hair samples, is then used to determine the population genetic structure, the extent of inbreeding and genetic differentiation within and among populations. The data is also used to generate a range of population demographic parameters including population size and trends, survival and recruitment rates, spatially-explicit densities, fitness levels and dispersal rates. New metagenomics methods are also being used to determine a range of health parameters (diet, microbiome diversity, parasites and viruses). In this presentation, I will show examples from projects completed on boreal and central mountain caribou and discuss the value of these methods for producing critical baseline data and ecological inferences that are directly linked to our conservation efforts. I will then discuss the evolution of wildlife monitoring in Canada, the importance of long-term datasets and reflect on future opportunities.