Recommendations

Ecosystem-based Monitoring and Reporting: Monitoring and reporting should encompass all key taxonomic groups and their likely relationships, linking responses to main biotic and abiotic drivers of change.

• Better coordinate between disciplines and knowledge systems both within and among Arctic states and Indigenous organizations, including experts in abiotic drivers of change (the Arctic Monitoring and Assessment Program) and other monitoring initiatives.
• Promote long-term integrated studies across biomes and taxonomic groups for examining trophic dynamics and other key interactions.
• Improve integration of factors that underpin changes in phenology, demography, and abundance.

The most urgent priorities for the future are to

(i) improve our knowledge of population distributions to better inform our definitions of discrete flyway populations;

(ii) implement effective mechanisms to at least periodically measure abundance for all northern hemisphere goose populations to assess trends over time;

(iii) initiate research to identify factors responsible for declining trends in populations of concern, and

(iv) evaluate potential negative effects of overabundant goose populations on habitat and sympatric species.

Arthropods : Arthropods are highly diverse and under-studied. They serve as important connections between trophic levels and several are important indicators of changing environments. The START reports on six FECs: pollinators, decomposers, herbivores, prey for vertebrates, blood-feeding insects, and predators and parasitoids. Only a few localized trends are provided due to high variability and lack of monitoring.

• Implement long-term sampling programs at strategic sites with rigorous standardized trapping protocols.
• Collect baseline data, including structured inventories, using standardized protocols for FECs and key attributes.
• Work with Indigenous Knowledge holders, Local Knowledge holders, and/or citizen science to identify regionally important species to monitor, and key locations for long-term monitoring activities.
• Focus monitoring efforts on taxa that: (a) are well-studied with existing data; (b) respond to, or are vulnerable to, change; and/or (c) have possible range shifts. • Monitor dominant habitats at a variety of sites at both small and large geographic scales.
• Monitor relevant microhabitat environmental parameters, in addition to climatological variables, and connect to biological trends at relevant scale.
• Focus on critical FEC attributes, including ecosystem processes such as pollination, decomposition, and herbivory.
• Continue specimen sorting, identification and reporting and construct a complete trait database.
• Complete molecular sequence libraries, increase international collaboration to collate, analyze, archive, and make data accessible.

Methods : Increased attention to methodology facilitates more precise and comparable results, standardized data collection, and ability to link regional monitoring to circumpolar efforts.

• Standardize how data is collected, managed, and reported, including field and sampling protocols, data collection methods, terminology, database harmonization and management, tools for data archiving and specimen libraries, including identification and curation.
• Create a harmonized, accessible, and long-term taxonomic framework for Arctic monitoring.
• Complete baseline studies and structured inventories to improve circumpolar data across FECs.
• Promote multi-species studies and long-term time series data.

Mammals: The START reports on half of mammal FECs including large herbivores (caribou/reindeer, muskoxen), small herbivores (lemming), and medium-sized predators (Arctic fox). Data deficiencies prohibited reporting on medium-sized herbivores, and large and small predators.

• Develop synchronized protocols that include more attributes and reduce geographical knowledge gaps.
• Establish or expand international monitoring networks for medium-sized herbivores and large and small carnivores.
• Emphasize spatial structure and diversity in monitoring efforts due to the northward advance of southern competitors and vegetation changes.
• For large herbivore, small herbivore, and medium-sized predator FECs:
• Agree on priorities and harmonize data collection across sites and programs;
• Share and standardize protocols, in cooperation with relevant partners including Indigenous Peoples and organizations, to include abundance, demographics, spatial structure, health, phenology and, for harvested species, harvest rates; and
• Ensure monitoring programs employ existing methods with new harmonized methods to allow data comparisons.
• Monitor health as an attribute and develop standardized health assessment protocols due to the anticipated impact of climate change on distribution and prevalence of disease.
• Monitor abiotic factors and drivers of change, across greater spatial distributions to assess the cumulative impacts of climate and other anthropogenic change on populations across their ranges.
• Conduct research on the vulnerabilities of populations to climate change and human impacts, and on genetic diversity and spatial structure of FECs.
• Increase collaboration using interdisciplinary and multi-knowledge approaches to share site- and population-specific information. This can improve monitoring and lead to better models to assess the vulnerabilities and resilience of specific populations.
• Address challenges in assessing abundance of FECs across the Arctic, including:
• reliability of abundance estimates, such as lack of precision and accuracy;
• changing baselines, such as changes in species distribution, sampling methodology, and areas monitored; and
• differences in frequency and spatial extent of monitoring.

Local Knowledge and Citizen Science: Local Knowledge exists on a spectrum from long-term, place-based experiential knowledge held by local residents, including harvesters, to knowledge of more recent residents. As such, monitoring efforts to work with Local Knowledge must interact with a wide range of diverse knowledge holders.

• Dedicate more time to collaboration with Local Knowledge holders in monitoring design, analysis and interpretation.
• Encourage and support citizen science platforms that engage Arctic residents, as well as visitors. Platforms should reflect strong scientific goals, have transparent methods for evaluating data quality, build communities of observers, engage a strong volunteer base, and devote consistent efforts to communicating results.
• Identify and collaborate across existing platforms to increase awareness and participation in citizen science and consider new approaches to address knowledge gaps.
• Invest in digital infrastructure as a prerequisite for fully accessible platforms to inform biodiversity monitoring.

Vegetation : Monitoring of vegetation is inconsistent, with large gaps in geographical cover. Of the four FECs for monitoring vegetation, the START was able to report on all plants, species of concern, and invasive alien species. Food species were not included as data were too disparate.

• Investigate causality in vegetation change in the context of ecosystem components, including habitat specific drivers, particularly climate, and emphasize ecosystem-based approaches.
• Continue and expand in situ time series.
• Utilize plot-based vegetation surveys to provide insight into vegetation changes and improve the ability to predict environmental change impacts on tundra ecosystems.
• Better consider the expected impacts of biotic and abiotic drivers on vegetation change when developing monitoring programs and conceptual models.
• Use regional and global remote-sensing products with higher spatial and temporal resolution.
• Increase monitoring efforts for all FECs, and target efforts to address data gaps, such as for food species.

Coordination: Improved coordination of monitoring is necessary to implement a comprehensive, integrated, ecosystem-based monitoring program envisioned by the CBMP. Coordination is necessary to help achieve additional advice for monitoring presented in the START.

• Design statistically rigorous sampling methodologies and protocols.
• Encourage states to implement the CBMP Terrestrial Plan to secure long-term funding for existing monitoring.
• CAFF, including the CBMP, should take a coordinating role to follow-up on advice from this report. Specific tasks are found in the CBMP Strategic Plan 2021-2025.