Population trends for Swedish breeding birds

Ottvall, Richard; Edenius, Lars; Elmberg, Johan; Engström, Henri; Green, Martin A.; Holmqvist, Niklas; Lindström, Åke; Tjernberg, Martin; Pärt, Tomas

doi:10.34080/os.v19.22652

Cited by 44 publications

(6 citation statements)

References 60 publications

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“…If trends exist, either negative or positive, there will be higher synchrony in abundance than in growth rate. There are known trends in abundance of many European bird species, particularly migratory birds (Ottvall et al, 2009, Knaus et al, 2020, Harris et al, 2022), and this directional, temporal trend in population abundance could explain why synchrony in abundance is higher than in population growth rate (Tredennick et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Martin¹,

Hansen²,

Lee³

et al. 2023

Preprint

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Spatial population synchrony is common among populations of the same species and is an important predictor of extinction risk. Despite the potential consequences for metapopulation persistence, we still largely lack understanding of what makes one species more likely to be synchronized than another given the same environmental conditions. Generally, environmental conditions on a shared environment or a species' sensitivity to the environment can explain the extent of synchrony. Populations that are closer together experience more similar fluctuations in their environments than those populations that are further apart and are therefore more synchronized. The relative importance of environmental and demographic stochasticity for population dynamics is strongly linked to species life history traits, such as pace of life, why may impact population synchrony. For populations that migrate, there may be multiple environmental conditions at different locations driving synchrony. However, the importance of life history and migration strategies in determining patterns of spatial population synchrony have rarely been explored empirically. We therefore hypothesize that generation time, a proxy for pace of life, and migration play an important role in determining spatial population synchrony. We used population abundance data on breeding birds from four countries to investigate patterns of spatial population synchrony in growth rate and abundance. We investigated differences in synchrony across a gradient of generation times in resident, short-distance migrant, and long-distance migrant bird species. Species with shorter generation times were more synchronized than species with longer generation times. Short-distance migrants were more synchronized than long-distance migrants and resident birds. Our results provide novel empirical links between spatial population synchrony and species traits known to be of key importance for population dynamics, generation time and migration characteristics. We show how these different mechanisms can be combined to understand species-specific causes of spatial population synchrony. Understanding these specific drivers of spatial population synchrony is important in the face of increasingly severe threats to biodiversity and could be key for successful future conservation outcomes.

show abstract

Section: Discussionmentioning

confidence: 99%

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Martin¹,

Hansen²,

Lee³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…If trends exist, either negative or positive, there will be higher synchrony in abundance than in growth rate. There are known trends in abundance of many European bird species, particularly migratory birds (Harris et al, 2022; Knaus et al, 2020; Ottvall et al, 2009), and this directional, temporal trend in population abundance could explain why synchrony in abundance is higher than in population growth rate (Tredennick et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Martin

Hansen

Lee

et al. 2023

Journal of Animal Ecology

View full text Add to dashboard Cite

Spatial population synchrony is common among populations of the same species and is an important predictor of extinction risk. Despite the potential consequences for metapopulation persistence, we still largely lack understanding of what makes one species more likely to be synchronized than another given the same environmental conditions. Generally, environmental conditions in a shared environment or a species' sensitivity to the environment can explain the extent of synchrony. Populations that are closer together experience more similar fluctuations in their environments than those populations that are further apart and are therefore more synchronized. The relative importance of environmental and demographic stochasticity for population dynamics is strongly linked to species' life‐history traits, such as pace of life, which may impact population synchrony. For populations that migrate, there may be multiple environmental conditions at different locations driving synchrony. However, the importance of life history and migration tactics in determining patterns of spatial population synchrony have rarely been explored empirically. We therefore hypothesize that increasing generation time, a proxy for pace of life, would decrease spatial population synchrony and that migrants would be less synchronized than resident species. We used population abundance data on breeding birds from four countries to investigate patterns of spatial population synchrony in growth rate and abundance. We calculated the mean spatial population synchrony between log‐transformed population growth rates or log‐transformed abundances for each species and country separately. We investigated differences in synchrony across generation times in resident (n = 67), short‐distance migrant (n = 86) and long‐distance migrant (n = 39) bird species. Species with shorter generation times were more synchronized than species with longer generation times. Short‐distance migrants were more synchronized than long‐distance migrants and resident birds. Our results provide novel empirical links between spatial population synchrony and species traits known to be of key importance for population dynamics, generation time and migration tactics. We show how these different mechanisms can be combined to understand species‐specific causes of spatial population synchrony. Understanding these specific drivers of spatial population synchrony is important in the face of increasingly severe threats to biodiversity and could be key for successful future conservation outcomes.

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“…The Swedish model for forest biodiversity conservation is characterized by small protected areas and general considerations in the surrounding landscape [20]. While the latter appears to have positive effects on some bird species [256,342,343], empirical studies indicate that while small protected areas of unproductive forest and retention trees do contribute to the conservation of biodiversity, they are insufficient to satisfy the environmental objective "Living forests" [20,172,201,257].…”

Section: Integration Of Planning Processesmentioning

confidence: 99%

Challenges and Solutions for Forest Biodiversity Conservation in Sweden: Assessment of Policy, Implementation Outputs, and Consequences

Angelstam

Bush

Manton

2023

Land

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Swedish policies aim at conserving biological production, biodiversity, cultural heritage and recreational assets. This requires compositionally and structurally functional networks of representative habitats, the processes that maintain them, and resilient ecosystems. The term green infrastructure (GI) captures this. We review (1) policy concerning forest biodiversity conservation from the 1990s; (2) the implementation outputs, including the formulation of short-term and evidence-based long-term goals for protected areas, education, and the development of hierarchical spatial planning; (3) the consequences in terms of formally protected and voluntarily set-aside forest stands, as well as conservation management and habitat restoration. We assess the successes and failures regarding policy, outputs and consequences, discuss challenges to be addressed, and suggest solutions. Policies capture evidence-based knowledge about biodiversity, and evidence-based conservation planning as an output. However, the desired consequences are not met on the ground. Thus, the amount of formally protected and voluntary set-aside forests are presently too low, and have limited quality and poor functional connectivity. GI functionality is even declining because of forestry intensification, and insufficient conservation. Challenges include limited collaborative learning among forest and conservation planners, poor funding to conserve forest habitats with sufficient size, quality and connectivity, and national politics that ignores evidence-based knowledge. As solutions, we highlight the need for diversification of forest management systems with a landscape perspective that matches forest owner objectives and regional social-ecological contexts. This requires integrative approaches to knowledge production, learning and spatial planning.

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Population trends for Swedish breeding birds

Cited by 44 publications

References 60 publications

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Generation time and seasonal migration explain variation in spatial population synchrony across European bird species

Challenges and Solutions for Forest Biodiversity Conservation in Sweden: Assessment of Policy, Implementation Outputs, and Consequences

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