Optimal Conservation of Migratory Species

Martin, Tara G.; Chadès, Iadine; Arcese, Peter; Marra, Peter P.; Possingham, Hugh P.; Norris, D. Ryan

doi:10.1371/journal.pone.0000751

Cited by 317 publications

(342 citation statements)

References 14 publications

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“…From a natural sciences perspective, the need to account for the interconnected nature of biophysical systems to inform solutions to environmental problems has long been recognized (Christensen et al 1996, Beger et al 2010. It is increasingly common for land management policy and on-ground programs to seek to enhance the functional connectivity of landscapes to reduce the risk for species extinctions (e.g., Saura and Pascual-Hortal 2007), address the rate of invasive species spread (e.g., Chades et al 2011), and protect the conservation values of interdependent areas (Martin et al 2007, Iwamura et al 2014. Notably, interconnected, or boundaryspanning, biophysical systems have been identified as an important consideration for investigating environmental governance and the problem of fit (Galaz et al 2008, Young et al 2008.…”

Section: Social-ecological Fit Challengesmentioning

confidence: 99%

Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation

Guerrero¹,

Bodin²,

McAllister³

et al. 2015

E&S

134

128

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. 2015. Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation. Ecology and Society 20 (4) ABSTRACT. Significant benefits can arise from collaborative forms of governance that foster self-organization and flexibility. Likewise, governance systems that fit with the extent and complexity of the system under management are considered essential to our ability to solve environmental problems. However, from an empirical perspective the fundamental question of whether self-organized (bottomup) collaborative forms of governance are able to accomplish adequate fit is unresolved. We used new theory and methodological approaches underpinned by interdisciplinary network analysis to address this gap by investigating three governance challenges that relate to the problem of fit: shared management of ecological resources, management of interconnected ecological resources, and crossscale management. We first identified a set of social-ecological network configurations that represent the hypothesized ways in which collaborative arrangements can contribute to addressing these challenges. Using social and ecological data from a large-scale biodiversity conservation initiative in Australia, we empirically determined how well the observed patterns of stakeholder interactions reflect these network configurations. We found that stakeholders collaborate to manage individual parcels of native vegetation, but not for the management of interconnected parcels. In addition, our data show that the collaborative arrangements enable management across different scales (local, regional, supraregional). Our study provides empirical support for the ability of collaborative forms of governance to address the problem of fit, but also suggests that in some cases the establishment of bottom-up collaborative arrangements would likely benefit from specific guidance to facilitate the establishment of collaborations that better align with the ways ecological resources are interconnected across the landscape. In our case study region, this would improve the capacity of stakeholders to detect both the intended and unintended off-site impacts of management actions. Our approach offers an avenue for empirical evaluations of collaborative governance so that preconditions for effectiveness of environmental programs can be enhanced.

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Section: Social-ecological Fit Challengesmentioning

confidence: 99%

Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation

Guerrero¹,

Bodin²,

McAllister³

et al. 2015

E&S

134

128

View full text Add to dashboard Cite

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“…Conservation policies, such as protected area legislation, are often constrained by political boundaries (De Klemm, 1994;Gärdenfors, 2001;Martin et al, 2007), whereas highly migratory species are unrestricted by jurisdictional boundaries (Boersma and Parrish, 1999;Hooker and Gerber, 2004). These differences often increase the governance difficulties in sustainably managing threats to migratory species, especially in the marine environment.…”

Section: Introductionmentioning

confidence: 99%

Protecting Migratory Species in the Australian Marine Environment: A Cross-Jurisdictional Analysis of Policy and Management Plans

et al. 2018

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Marine migratory species are difficult to manage because animal movements can span large areas and are unconstrained by jurisdictional boundaries. We reviewed policy and management plans associated with four case studies protected under the Australian Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act 1999) in order to identify the coherence of policy and management plans for managing marine migratory species in Australia. Environmental policies (n = 23) and management plans (n = 115) relevant to marine turtles, dugongs, humpback whales, and migratory shorebirds were reviewed. Few of the reviewed policies (n = 7) listed protected species and even fewer (n = 4) listed protected marine migratory species. Marine turtles were most represented in the reviewed policies (n = 7), while migratory shorebirds were most represented in management plans (n = 59). Policies and management plans were much more likely to identify relationships to other policies or plans within the same jurisdiction than to different jurisdictions. The EPBC Act 1999 served as the central link between reviewed policies and plans, but the requirements of that Act were weakly integrated into the other documents. This weak integration and the biases toward specific migratory species in environmental policies and management plans are detrimental to the conservation of these Matters of National Environmental Significance in Australia. Any changes to the EPBC Act 1999 will affect all environmental policy and management plans in Australia and highlights a need for cooperative, multi-level governance of migratory species. Our findings may have relevance to the conservation of marine migratory species in a broader international context.

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“…For example, competition among conspecifics for suitable breeding habitat could manifest as higher survival in other portions of the annual cycle via compensatory density dependence (Sutherland 1996). Given the emerging information on demography at either end of the annual cycle now requires understanding how individuals are connected between breeding and nonbreeding seasons because it influences both population dynamics (Webster et al 2002) and informs conservation planning (Martin et al 2007). Ultimately, integrating demography and migratory connectivity across the annual cycle can identify which threats contribute the most to population viability (Flockhart et al 2015) to prioritize costeffective actions to mitigate population declines in threatened migratory songbirds (Sheehy et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Factors driving territory size and breeding success in a threatened migratory songbird, the Canada Warbler

Flockhart¹,

Mitchell²,

Krikun³

et al. 2016

ACE

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ABSTRACT. Successful conservation of migratory birds demands we understand how habitat factors on the breeding grounds influences breeding success. Multiple factors are known to directly influence breeding success in territorial songbirds. For example, greater food availability and fewer predators can have direct effects on breeding success. However, many of these same habitat factors can also result in higher conspecific density that may ultimately reduce breeding success through density dependence. In this case, there is a negative indirect effect of habitat on breeding success through its effects on conspecific density and territory size. Therefore, a key uncertainty facing land managers is whether important habitat attributes directly influence breeding success or indirectly influence breeding success through territory size. We used radio-telemetry, point-counts, vegetation sampling, predator observations, and insect sampling over two years to provide data on habitat selection of a steeply declining songbird species, the Canada Warbler (Cardellina canadensis). These data were then applied in a hierarchical path modeling framework and an AIC model selection approach to determine the habitat attributes that best predict breeding success. Canada Warblers had smaller territories in areas with high shrub cover, in the presence of red squirrels (Tamiasciurus hudsonicus), at shoreline sites relative to forest-interior sites and as conspecific density increased. Breeding success was lower for birds with smaller territories, which suggests competition for limited food resources, but there was no direct evidence that food availability influenced territory size or breeding success. The negative relationship between shrub cover and territory size in our study may arise because these specific habitat conditions are spatially heterogeneous, whereby individuals pack into patches of preferred breeding habitat scattered throughout the landscape, resulting in reduced territory size and an associated reduction in resource availability per territory. Our results therefore highlight the importance of considering direct and indirect effects for Canada warblers; efforts to increase the amount of breeding habitat may ultimately result in lower breeding success if habitat availability is limited and negative density dependent effects occur.Facteurs influant sur la taille du territoire et le succès reproducteur chez un passereau migrateur menacé, la Paruline du Canada RÉSUMÉ. La conservation réussie d'oiseaux migrateurs passe par la compréhension de l'influence qu'ont les composantes d'habitat des aires de nidification sur le succès reproducteur. Chez les passereaux territoriaux, de nombreuses composantes sont reconnues pour influer directement sur le succès reproducteur. Par exemple, la présence d'une grande disponibilité de nourriture et d'un faible nombre de prédateurs peut avoir des effets directs sur le succès reproducteur. Toutefois, bon nombre de ces mêmes composantes d'habitat peuvent aussi entrainer une densité d'individus c...

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Optimal Conservation of Migratory Species

Cited by 317 publications

References 14 publications

Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation

Achieving social-ecological fit through bottom-up collaborative governance: an empirical investigation

Protecting Migratory Species in the Australian Marine Environment: A Cross-Jurisdictional Analysis of Policy and Management Plans

Factors driving territory size and breeding success in a threatened migratory songbird, the Canada Warbler

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