Our reports

Fisheries framework obscures the long-term picture of declining populations

In this article published in Policy Options, CCIRA’s science coordinator Alejandro Frid and co-author Will Atlas write that DFO’s Sustainable Fisheries Framework uses shifting baselines to determine if a species stock is healthy, which fails to account for historical declines.

Fisheries framework obscures the long-term picture of declining populations

Growth parameter k and location affect body size responses to spatial protection by exploited rockfishes

Since 2013, CCIRA and technical staff from the Wuikinuxv, Nuxalk, Heiltsuk and Kitasoo/Xai’xais First Nations, have surveyed rockfish populations and their habitats along British Columbia’s Central Coast. Using these ongoing surveys, this study examines the extent to which Rockfish Conservation Areas have promoted the recovery of different rockfish species.

Growth parameter k and location affect body size responses to spatial protection by exploited rockfishes (PDF)

Prioritizing conservation actions for Pacific salmon in Canada

This collaborative research—involving Simon Fraser University, The Pacific Salmon Foundation, CCIRA and its member Nations, and other partners—applies a Priority Threat Management framework to prioritize strategies for conserving and restoring Pacific salmon populations along BC’s Central Coast—a region with high salmon biodiversity that spans the territories of the Heiltsuk, Nuxalk, Kitasoo/Xai’xais and Wuikinuxv First Nations.

Prioritizing conservation actions for Pacific salmon in Canada (PDF)

Trophic position scales positively with body size within but not among four species of rocky reef predators

This collaborative research—involving CCIRA, The Hakai Institute, and the University of Victoria–examines the ecological role of three rockfish species and of lingcod. The findings suggest that overfishing of large individuals degrades food webs, and fisheries should be managed more conservatively to mitigate these impacts.

Trophic position scales positively with body size within but not among four species of rocky reef predators (PDF)

Conservation Risk and Uncertainty in Recovery Prospects for a Collapsed and Culturally Important Salmon Population in a Mixed‐Stock Fishery

Highlighting collaborative research initiated and directed by the Nuxalk Nation, this study aims to better understand the collapse of Sockeye Salmon in the Atnarko watershed—specifically the role of mixed‐stock fisheries in impeding recovery of this culturally important species.

Conservation Risk and Uncertainty in Recovery Prospects for a Collapsed and Culturally Important Salmon Population in a Mixed‐Stock Fishery (PDF)

Assessing bias and solutions in camera-based groundfish surveys

Since 2015, CCIRA has conducted groundfish surveys by towing a video camera equipped with lasers behind a boat. In this paper, CCIRA scientists assess sources of bias in these fish counts, and provide corrections to strengthen future research efforts and lead to better conservation outcomes.

Addendum to “Chasing the light: Positive bias in camera-based surveys of groundfish examined as risk-foraging trade-offs” Biological Conservation, 231, 133–138 (PDF)

Chasing the light: Positive bias in camera-based surveys of groundfish examined as risk-foraging trade-offs (PDF)

Indigenous perspectives improve research and resource management

Co-authored by representatives from all four of our Nations, this paper highlights the individual strengths of Indigenous knowledge and western science, illustrating how these complementary world views can be used in combination to enhance research and resource management. Critically, when Indigenous perspectives are not considered in research, policymakers may lack the information needed to make socially just decisions. The authors make recommendations to other ecologists for effective collaboration with Indigenous peoples.

 The Incorporate Indigenous perspectives for impactful research and effective management (PDF)

Key habitats identified for rockfish conservation

Cover image of Conservation Letters Journal May/June 2018

Rockfish are an important part of the ecosystems, cultures and local economies of Central Coast communities. This study sheds new light on the most important habitat types for the 22 species of rockfish that live in nearshore waters of our Nations’ territories.  This new information could help strengthen the design of Marine Protected Areas with respect to long-term rockfish conservation. Researchers also discovered previously undocumented nearshore areas with a high diversity of rockfish and large concentrations of deep-water corals and glass sponges.   The area–heterogeneity tradeoff applied to spatial protection of rockfish (Sebastes spp.) species richness(PDF)

Indigenous peoples’ rights and marine protected areas

Marine Policy Journal

Marine protected areas (MPAs) have the potential to recognize, honour, and re-invigorate Indigenous rights and support biodiversity conservation. This paper is a review of global case studies examining the inclusion of indigenous rights within marine planning processes. Special reference is given to the ongoing government-to-government collaboration in BC within the MPA network planning process.

Listen to a short podcast that summarizes this important work (PDF)

Indigenous peoples’ rights and marine protected areas (PDF)

Indigenous knowledge contributes to crab management and conservation

Ecosystem Health & Sustainability

Dungeness crab are an important part of our culture as a traditional source of local food for our Nations. As recreational and commercial fishing pressure has increased over time, the decline in the local abundance of crab has made it harder to catch enough to meet our food needs.  However, long-term scientific data to support management actions for central coast crab are sparse.  In this paper, the local and traditional knowledge of our fishers is used to fill in gaps in existing scientific data and provide new insights into changes in central coast crab populations. Results uncovered severe declines in crab populations since the 1990s, while illustrating that our fishers’ local and traditional knowledge can make important contributions to crab management and conservation.

Crab management infographic (PDF)

Indigenous knowledge as data for modern fishery management: a case study of Dungeness crab in Pacific Canada (PDF)

Indigenous knowledge illuminates yelloweye rockfish population declines

Yelloweye rockfish are important components of marine ecosystems and they also have cultural and commercial value as a source of food. In recent decades this species has been experiencing dramatic declines in size and abundance on the central coast of BC. Our people’s knowledge of this species goes back decades further than any scientific dataset, and is the best source of data on historical yelloweye populations in this region. This paper, published by scientists at the University of Victoria and CCIRA, illustrates how our traditional and local knowledge has enhanced our understanding of changes in yelloweye populations over the past 65 years. This work also serves as a template for integrating indigenous knowledge into research and management of other fisheries in Canada and elsewhere.

Infographic representation of the results (PDF)

Diving back in time: Extending historical baselines for yelloweye rockfish with Indigenous knowledge (PDF)

Declining size and age of rockfishes

Our fisheries and science coordinators, Madeleine McGreer and Alejandro Frid, have published a new paper showing that recent declines in the size and age of rockfishes in our territories are rapid, strong, and appear to be ongoing. These species, that our Nations rely on for food and cultural sustenance, are at historical low levels of abundance. Since older, bigger rockfish produce more young than smaller, younger fish, the authors suggest that managers strive to restore old and large fish to aid the recovery of central coast rockfish populations.

Declining size and age of rockfishes (Sebastes spp.) inherent to Indigenous cultures of Pacific Canada (PDF)

Rockfish conservation and indigenous rights

rockfish-paper-capture

Our science and fisheries coordinators, Alejandro Frid and Madeleine McGreer, just published research by our Nations linking the ages and sizes of rockfish in our territories to our indigenous right to harvest wild food for food and cultural practice. The research found that Yelloweye and Quillback rockfishes were larger in areas with lower fishery pressure. Possibly due to overfishing, however, old-aged Yelloweye rockfish were rare. Because older fish produce more larvae that survive better and grow faster, this finding raises concern about the conservation status of Yelloweye. The research also suggests that Rockfish Conservation Areas—where non-indigenous fisheries are excluded—can protect First Nation’s access to rockfish, as long as habitat suitability and effective monitoring and enforcement are included in spatial management.

Rockfish size and age: The crossroads of spatial protection, central place fisheries and indigenous rights(PDF)

Atnarko Sockey Recovery Plan

Cover page of the Atnarko Sockeye Recovery Plan

The Atnarko River watershed is located in Nuxalk Ancestral Territory on the Central Coast of British Columbia approximately 55 km east of the community of Bella Coola. The river flows 43km through a series of five connected Sockeye salmon nursery lakes (Elbow, Rainbow, Tenas, Lonesome, and Stillwater) before joining the Talchako River to become the Bella Coola River. Atnarko Sockeye have been observed spawning in and between all five lakes as well as downstream of Stillwater Lake. Sockeye from the Atnarko appear to exhibit three distinct life-history types that differ in the amount of time they rear in freshwater before migrating to sea.

Atnarko Sockeye Recovery Plan(PDF)

Dungeness crab and spatial closures

global-ecology

CCIRA’s science and fisheries coordinators, Alejandro Frid and Madeleine McGreer, recently published results our on-going Dungeness crab research. Research results confirm the hypothesis that fisheries decrease the abundance and size of exploited species, but spatial protection can reverse these effects. Read about it in global ecology.

Rapid recovery of Dungeness crab within spatial fishery closures declared under indigenous law in British Columbia (PDF)

Dungeness crab research by the wuikinuxv nation

crab

Our ongoing field studies are monitoring the status of Dungeness crab throughout our territories. This report presents interim results from a tagging study conducted by the Wuikinuxv Nation during May of 2014 at two sites in Rivers Inlet.

Dungeness Crab Research (PDF)

Social and economic assessment and analysis of first nation communities

se-report

A social and economic assessment and analysis of First Nation communities and territorial natural resources in the region. Project components include a community survey to create a demographic profile of First Nation communities on the Central Coast and a commercial economic assessment of marine resource sectors in the region.

Social and Economic Assessment (PDF)