A significant portion of the planet's land and sea is managed to conserve biodiversity, yet little is known about the extent, speed and patterns of adoption of conservation initiatives. We undertook the first quantitative exploration of how area-based conservation initiatives go to scale by analysing the adoption of 22 widely-recognised and diverse initiatives, from across the globe. We use a standardised approach for comparing the potential of different initiatives to reach scale. While our study is not exhaustive, our analyses reveal consistent patterns across a variety of initiatives: adoption of most initiatives (82% of our case studies) started slowly before rapidly going to scale. Consistent with diffusion of innovation theory, most initiatives exhibit slow-fast-slow (i.e., sigmoidal) dynamics driven by interactions between existing and potential adopters. However, uptake rates and saturation points vary among the initiatives and across localities. Our models suggest that the uptake of most of our case studies is limited; over half of the initiatives will be taken up by <30% of their potential adopters. We also provide a methodology for quantitatively understanding the process of scaling. Our findings inform us how initiatives scale up to widespread adoption, this will facilitate forecasts of the future level of adoption of initiatives, and benchmarking their extent and speed of adoption against those of our case studies.
Global commitments prioritize protection of wildlife and improvements to human wellbeing. Local disconnects in these commitments are rarely acknowledged—or their implications assessed—preventing the development of effective solutions. National and international efforts to protect marine mammals along South America's west coast have contributed to species recovery, but also to conflict between sea lions and small‐scale fisheries. To understand the concerns ultimately motivating this conflict, we assessed how 301 coastal small‐scale fishers perceive their interactions with South American sea lions (Otaria flavescens). We then reviewed the terrestrial human–wildlife literature to identify potential management solutions to resolve the conflict. We find that fishers are chiefly concerned with increases in sea lion populations, perceive that sea lion interactions have significantly increased over the past 80 years, and report sea lion‐driven catch and income losses of ≥26%. We propose solutions to manage conflict that are sensitive to heterogeneity among fisher groups.
Globally, the populations of many marine mammals remain of critical concern after centuries of exploitation and hunting. However, some marine mammal populations (e.g. pinnipeds) have largely recovered from exploitation, and interactions between these species and fisheries-particularly small-scale fisheries-is once again of concern globally. The large scope and widespread scale of interactions highlights the local disconnect between two global policies: marine mammal conservation and small-scale fisheries protection. In this research, we explore these conflicting global policies by assessing the perceptions of coastal smallscale fishers in Peru and Chile regarding their interactions with pinnipeds, including the South American sea lion (Otaria flavescens) and South American fur seal (Arctocephalus australis). We surveyed 301 gill net fishers and assess perceptions using a best-worst scaling methodology. We find that fishers are chiefly concerned with the increase in pinniped populations, perceive that their interactions with pinnipeds have significantly increased over the past 80 years, and report pinniped-driven catch and income losses ≥ 26 per cent. Surprisingly, fishers do not believe that compensation schemes will resolve this issueinstead they overwhelmingly call for pinniped population culls. The reported number of pinnipeds illegally killed by fishers suggests the potential for large negative impacts on these protected species, and a loss of legitimacy in marine regulation. Collectively, our results portray a sense of marginalisation from fishers'-that global policy treats them as less "important" than marine mammals. Our results highlight the increasing disconnect in global policy, which on one hand seeks to protect threatened marine mammal populations, and on the other seeks to promote the welfare of small-scale fishers.
Conservation initiatives rarely achieve the scale required to respond to ongoing biodiversity loss. Understanding what drives the adoption of conservation initiatives provides key insights into how initiatives expand to a scale necessary for effective conservation outcomes. In this article, we identified characteristics of conservation initiatives, adopters, and context that influenced the adoption of extensive Wildlife Management Units (UMAs) in Mexico. We interviewed
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