Abstract:The concept of “scale” (including biological, spatial, temporal, allometric and phylogenetic aspects) is fundamental to conservation physiology. Failure to consider its importance will impede our ability to contribute to meaningful conservation outcomes. It is essential to consider scale of all sorts and to work across scales to the extent possible.
“…Sound levels underwater typically go unnoticed by humans that are on or near the water, and observing fish behaviour is even challenging to marine investigators that apply special tools (e.g. Bruce et al., ; Cooke et al., ; Metcalfe, Wright, Tudorache, & Wilson, ). Furthermore, it is challenging to determine the long‐term impact on welfare or fitness from short‐term behavioural changes in response to anthropogenic noise; the challenge is even greater if there is a physiological response but no apparent change in behaviour (Kight & Swaddle, ; Kunc, McLaughlin, & Schmidt, ).…”
Offshore activities elevate ambient sound levels at sea, which may affect marine fauna. We reviewed the literature about impact of airgun acoustic exposure on fish in terms of damage, disturbance and detection and explored the nature of impact assessment at population level. We provided a conceptual framework for how to address this interdisciplinary challenge, and we listed potential tools for investigation. We focused on limitations in data currently available, and we stressed the potential benefits from cross‐species comparisons. Well‐replicated and controlled studies do not exist for hearing thresholds and dose–response curves for airgun acoustic exposure. We especially lack insight into behavioural changes for free‐ranging fish to actual seismic surveys and on lasting effects of behavioural changes in terms of time and energy budgets, missed feeding or mating opportunities, decreased performance in predator‐prey interactions, and chronic stress effects on growth, development and reproduction. We also lack insight into whether any of these effects could have population‐level consequences. General “population consequences of acoustic disturbance” (PCAD) models have been developed for marine mammals, but there has been little progress so far in other taxa. The acoustic world of fishes is quite different from human perception and imagination as fish perceive particle motion and sound pressure. Progress is therefore also required in understanding the nature and extent to which fishes extract acoustic information from their environment. We addressed the challenges and opportunities for upscaling individual impact to the population, community and ecosystem level and provided a guide to critical gaps in our knowledge.
“…Sound levels underwater typically go unnoticed by humans that are on or near the water, and observing fish behaviour is even challenging to marine investigators that apply special tools (e.g. Bruce et al., ; Cooke et al., ; Metcalfe, Wright, Tudorache, & Wilson, ). Furthermore, it is challenging to determine the long‐term impact on welfare or fitness from short‐term behavioural changes in response to anthropogenic noise; the challenge is even greater if there is a physiological response but no apparent change in behaviour (Kight & Swaddle, ; Kunc, McLaughlin, & Schmidt, ).…”
Offshore activities elevate ambient sound levels at sea, which may affect marine fauna. We reviewed the literature about impact of airgun acoustic exposure on fish in terms of damage, disturbance and detection and explored the nature of impact assessment at population level. We provided a conceptual framework for how to address this interdisciplinary challenge, and we listed potential tools for investigation. We focused on limitations in data currently available, and we stressed the potential benefits from cross‐species comparisons. Well‐replicated and controlled studies do not exist for hearing thresholds and dose–response curves for airgun acoustic exposure. We especially lack insight into behavioural changes for free‐ranging fish to actual seismic surveys and on lasting effects of behavioural changes in terms of time and energy budgets, missed feeding or mating opportunities, decreased performance in predator‐prey interactions, and chronic stress effects on growth, development and reproduction. We also lack insight into whether any of these effects could have population‐level consequences. General “population consequences of acoustic disturbance” (PCAD) models have been developed for marine mammals, but there has been little progress so far in other taxa. The acoustic world of fishes is quite different from human perception and imagination as fish perceive particle motion and sound pressure. Progress is therefore also required in understanding the nature and extent to which fishes extract acoustic information from their environment. We addressed the challenges and opportunities for upscaling individual impact to the population, community and ecosystem level and provided a guide to critical gaps in our knowledge.
“…Working across scales to understand mechanisms underlying conservation problems is the norm (Cooke et al 2014). Many different scales are relevant in defining conservation questions, including biological, spatial, temporal, jurisdictional, and institutional, among others (Cash et al 2006;Cooke et al 2014).…”
Section: Because the Heterogeneity Of Scale Necessitates Itmentioning
confidence: 99%
“…Many different scales are relevant in defining conservation questions, including biological, spatial, temporal, jurisdictional, and institutional, among others (Cash et al 2006;Cooke et al 2014). However, in conservation science, the scale at which we can measure Dick et al something is rarely at the same scale as the consequences of interest (Cooke et al 2014). For example, it is very challenging to monitor the population status of organisms that are rare (or cryptic) yet have a broad distribution while trying to identify the mechanisms (including site-specific and more regional or global processes) behind any changes in population trajectories.…”
Section: Because the Heterogeneity Of Scale Necessitates Itmentioning
confidence: 99%
“…Reconciling these biophysical and social scales is important to improve policy and management strategies (Box 1). Failure to address the importance of scale in conservation science will impede the ability to generate scientific understanding that can contribute to meaningful and desirable outcomes, particularly in forms of policies (Cooke et al 2014). A multiple disciplinary approach that spans both academic and non-academic boundaries can account for the seemingly abstract and intangible scales that govern the broader socioeconomic perspectives of the conservation problem at hand.…”
Section: Because the Heterogeneity Of Scale Necessitates Itmentioning
confidence: 99%
“…The inclusion of societal and management scales allows for the addition of the dimension that designs and implements appropriate policy/management plans (which again can be very local or more global). Conservation science must be prepared to show how it is relevant at the policy/management scale, or to change the scale at which policy/management intervention is applied (Cooke et al 2014). Accepting where a research question lies in the multidimensional and multiscalar arena of conservation science from a multiple disciplinary perspective will allow researchers to understand the big picture and will increase the applicability and level of impact of their work in different spheres ranging from local to global.…”
Section: Because the Heterogeneity Of Scale Necessitates Itmentioning
Contemporary conservation problems are typically positioned at the interface of complex ecological and human systems. Traditional approaches aiming to compartmentalize a phenomenon within the confines of a single discipline and failing to engage non-science partners are outmoded and cannot identify solutions that have traction in the social, economic, and political arenas in which conservation actions must operate. As a result, conservation science teams must adopt multiple disciplinary approaches that bridge not only academic disciplines but also the political and social realms and engage relevant partners. Five reasons are presented that outline why conservation problems demand multiple disciplinary approaches in order to move forward because: (i) socio-ecological systems are complex, (ii) multiple perspectives are better than one, (iii) the results of research must influence practice, (iv) the heterogeneity of scale necessitates it, and (v) conservation involves compromise. Presenting reasons that support multiple disciplinarity demands a review of the barriers that impede this process, as we are far from attaining a model or framework that is applicable in all contexts. Two challenges that impede multiple disciplinarity are discussed, in addition to pragmatic solutions that conservation scientists and practitioners can adopt in their work. Overall, conservation researchers and practitioners are encouraged to explore the multiple disciplinary dimensions of their respective realms to more effectively solve problems in biodiversity and sustainability.
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