Adaptive Management

An evaluation of nest predator impacts and the efficacy of plastic meshing on marine turtle nests on the western Cape York Peninsula, Australia

Nordberg EJ, Macdonald S, Zimny G, Hoskins A, Zimny A, Somaweera R, Ferguson J, Perry J. An evaluation of nest predator impacts and the efficacy of plastic meshing on marine turtle nests on the western Cape York Peninsula, Australia. Biological Conservation [Internet]. 2019 ;238:108201. Available from: https://www.sciencedirect.com/science/article/pii/S0006320719305981
Freely available?: 
No
Summary available?: 
No
Type: Journal Article

Nest predation is considered to be one of the most significant biotic threats to marine turtle populations globally. The introduction of feral predators to nesting beaches has dramatically increased nest predation, reaching near total egg loss in some regions. We monitored a 48 km stretch of beach along western Cape York Peninsula, Australia, from June – November 2018. We recorded a total of 360 nests comprising 117 flatback and 243 olive ridley nests. We installed plastic meshing (90 cm × 100 cm) on 110 olive ridley nests (45.2% of total olive ridley clutches laid) within the study area. We classified all nest predation attempts into three categories: complete, partial, or failed predation events. In total, 109 (30.2%) of all marine turtle nests were depredated by a variety of predators, including feral pigs, dingoes, goannas, and humans. The addition of plastic meshing reduced the likelihood of dingoes gaining access to eggs, but not goannas or feral pigs. Further, we found no difference in the proportion of hatchling emergence between meshed and un-meshed nests. Additionally, while hatchling emergence was reduced in nests that had been partially depredated, these nests still produced live hatchlings and contributed to recruitment. The success of particular predator control methods is often predator, and/or regionally, specific. Our findings highlight a thorough understanding of predator guilds and their relative impacts is required to deploy targeted and predator-specific strategies to maximize conservation results. We present a strong case for data-driven adaptive management that has implications for designing optimal predator management plans.

Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic

Baums IB, Baker AC, Davies SW, Grottoli AG, Kenkel CD, Kitchen SA, Kuffner IB, LaJeunesse TC, Matz MV, Miller MW, et al. Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic. Ecological Applications [Internet]. 2019 . Available from: https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/eap.1978?casa_token=jpiZfIIXy-4AAAAA:pXxNJhLdK6n_ZxOekdqYCN5HISrp9q_y0nWPAdeMQb997kogW0XyoIdPYEw4xHgN2T0VCGnSp64ic60
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $42.00
Type: Journal Article

Active coral restoration typically involves two interventions: crossing gametes to facilitate sexual larval propagation; and fragmenting, growing, and outplanting adult colonies to enhance asexual propagation. From an evolutionary perspective, the goal of these efforts is to establish self‐sustaining, sexually reproducing coral populations that have sufficient genetic and phenotypic variation to adapt to changing environments. Here, we provide concrete guidelines to help restoration practitioners meet this goal for most Caribbean species of interest. To enable the persistence of coral populations exposed to severe selection pressure from many stressors, a mixed provenance strategy is suggested: genetically unique colonies (genets) should be sourced both locally as well as from more distant, environmentally distinct sites. Sourcing 3‐4 genets per reef along environmental gradients should be sufficient to capture a majority of intraspecies genetic diversity. It is best for practitioners to propagate genets with one or more phenotypic traits that are predicted to be valuable in the future, such as low partial mortality, high would healing rate, high skeletal growth rate, bleaching resilience, infectious disease resilience, and high sexual reproductive output. Some effort should also be reserved for underperforming genets because colonies that grow poorly in nurseries sometimes thrive once returned to the reef and may harbor genetic variants with as yet unrecognized value. Outplants should be clustered in groups of 4‐6 genets to enable successful fertilization upon maturation. Current evidence indicates that translocating genets among distant reefs is unlikely to be problematic from a population genetic perspective but will likely provide substantial adaptive benefits. Similarly, inbreeding depression is not a concern given that current practices only raise first‐generation offspring. Thus, proceeding with the proposed management strategies even in the absence of a detailed population genetic analysis of the focal species at sites targeted for restoration is the best course of action. These basic guidelines should help maximize the adaptive potential of reef‐building corals facing a rapidly changing environment.

Setting ecological expectations for adaptive management of marine protected areas

Nickols KJ, J. White W, Malone D, Carr MH, Starr RM, Baskett ML, Hastings A, Botsford LW. Setting ecological expectations for adaptive management of marine protected areas. Journal of Applied Ecology [Internet]. 2019 . Available from: https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2664.13463
Freely available?: 
Yes
Summary available?: 
No
Type: Journal Article
  1. Marine Protected Areas (MPAs) are being implemented worldwide, yet there are few cases where managers make specific predictions of the response of previously harvested populations to MPA implementation.
  2. Such predictions are needed to evaluate whether MPAs are working as expected, and if not, why. This evaluation is necessary to perform adaptive management, identifying whether and when adjustments to management might be necessary to achieve MPA goals.
  3. Using monitoring data and population models, we quantified expected responses of targeted species to MPA implementation and compared them to monitoring data.
  4. The model required two factors to explain observed responses in MPAs: (a) pre‐MPA harvest rates, which can vary at local spatial scales, and (b) recruitment variability before and after MPA establishment. Low recruitment years before MPA establishment in our study system drove deviations from expected equilibrium population size distributions and introduced an additional time lag to response detectability.
  5. Synthesis and applications. We combined monitoring data and population models to show how (a) harvest rates prior to Marine Protected Area (MPA) implementation, (b) variability in recruitment, and (c) initial population size structure determine whether a response to MPA establishment is detectable. Pre‐MPA harvest rates across MPAs plays a large role in MPA response detectability, demonstrating the importance of measuring this poorly known parameter. While an intuitive expectation is for response detectability to depend on recruitment variability and stochasticity in population trajectories after MPA establishment, we address the overlooked role of recruitment variability before MPA establishment, which alters the size structure at the time of MPA establishment. These factors provide MPA practitioners with reasons whether or not MPAs may lead to responses of targeted species. Our overall approach provides a framework for a critical step of adaptive management.

Setting ecological expectations for adaptive management of marine protected areas

Nickols KJ, J. White W, Malone D, Carr MH, Starr RM, Baskett ML, Hastings A, Botsford LW. Setting ecological expectations for adaptive management of marine protected areas. Journal of Applied Ecology [Internet]. 2019 . Available from: https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2664.13463
Freely available?: 
Yes
Summary available?: 
No
Type: Journal Article
  1. Marine Protected Areas (MPAs) are being implemented worldwide, yet there are few cases where managers make specific predictions of the response of previously harvested populations to MPA implementation.
  2. Such predictions are needed to evaluate whether MPAs are working as expected, and if not, why. This evaluation is necessary to perform adaptive management, identifying whether and when adjustments to management might be necessary to achieve MPA goals.
  3. Using monitoring data and population models, we quantified expected responses of targeted species to MPA implementation and compared them to monitoring data.
  4. The model required two factors to explain observed responses in MPAs: (a) pre‐MPA harvest rates, which can vary at local spatial scales, and (b) recruitment variability before and after MPA establishment. Low recruitment years before MPA establishment in our study system drove deviations from expected equilibrium population size distributions and introduced an additional time lag to response detectability.
  5. Synthesis and applications. We combined monitoring data and population models to show how (a) harvest rates prior to Marine Protected Area (MPA) implementation, (b) variability in recruitment, and (c) initial population size structure determine whether a response to MPA establishment is detectable. Pre‐MPA harvest rates across MPAs plays a large role in MPA response detectability, demonstrating the importance of measuring this poorly known parameter. While an intuitive expectation is for response detectability to depend on recruitment variability and stochasticity in population trajectories after MPA establishment, we address the overlooked role of recruitment variability before MPA establishment, which alters the size structure at the time of MPA establishment. These factors provide MPA practitioners with reasons whether or not MPAs may lead to responses of targeted species. Our overall approach provides a framework for a critical step of adaptive management.

Adaptations of Coastal Cities to Global Warming, Sea Level Rise, Climate Change and Endemic Hazards - Structures That Protect Coastal Populations, Assets, and GDPs: Sea Dikes, Breakwaters, Seawalls

Siegel FR, Siegel FR. Adaptations of Coastal Cities to Global Warming, Sea Level Rise, Climate Change and Endemic Hazards - Structures That Protect Coastal Populations, Assets, and GDPs: Sea Dikes, Breakwaters, Seawalls. Cham: Springer International Publishing; 2019 pp. 11 - 25. Available from: https://link.springer.com/chapter/10.1007/978-3-030-22669-5_3
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $29.95
Type: Book

In 2018, about one billion people of the Earth’s 7.6 billion lived in marine coastal zones. The people, their property, and the infrastructure that supports them, and a city or national per capita GDP are at risk at multiple levels. These include coastal erosion, high and spring tides that cause lowland flooding, weather-related events (storm surges, flooding, wind, crop loss, unprotected anchorage, stabilization of navigation channels, and rarely, killer tsunamis). These coastal zones now, and more so in the future, are likely to be at high risk because of global warming-driven sea level rise. Human activity inshore can increase the level of risk from the above cited sources, such as flooding by abetting subsidence because of overuse of coastal aquifers for a water supply. Dikes, breakwaters, sea walls, and related structures are designed to thwart for some time (50 years?) damaging, destructive forces that assault coastal regions worldwide. They are costly to build and maintain but in short and long terms present economic benefits that preserve much, much more in capital investment.

Climate change adaptation planning in practice: insights from the Caribbean

Thomas A, Shooya O, Rokitzki M, Bertrand M, Lissner T. Climate change adaptation planning in practice: insights from the Caribbean. Regional Environmental Change [Internet]. 2019 . Available from: https://link.springer.com/article/10.1007/s10113-019-01540-5
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $39.95
Type: Journal Article

Climate change adaptation planning has rapidly expanded to assist with reducing vulnerability to current and projected impacts of climate change. In Caribbean small island developing states (SIDS), planned adaptation is viewed as essential to address their high vulnerability to climate change, and planning has begun in earnest across the region. However, there has been limited analysis of adaptation planning documents in the region to assess their quality and content. This study assesses adaptation planning documents from Caribbean SIDS, focusing on inclusion of key stages of adaptation planning that were identified from international and regionally specific adaptation guidance instruments. Eighty-nine Caribbean adaptation planning documents—including policies, strategies, programs, and projects—were assessed, revealing that they differ considerably from guidance instruments. Key areas for improvement include the need for (i) more direct linkages between identification of adaptation options and assessments of climate hazards, impacts, vulnerability, and risk; (ii) identification and appraisal of a range of adaptation options; and (iii) increased inclusion and usage of quantitative information about hazards and impacts. Addressing these deficiencies may help to improve the status of adaptation planning in the region and ultimately aid in reducing the high vulnerability of these island nations to the impacts of climate change.

Setting expected timelines of fished population recovery for the adaptive management of a marine protected area network

Kaplan KA, Yamane L, Botsford LW, Baskett ML, Hastings A, Worden S, J. White W. Setting expected timelines of fished population recovery for the adaptive management of a marine protected area network. Ecological Applications [Internet]. 2019 :e01949. Available from: https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/eap.1949
Freely available?: 
No
Summary available?: 
No
Type: Journal Article

Adaptive management of marine protected areas (MPAs) requires developing methods to evaluate whether monitoring data indicate that they are performing as expected. Modeling the expected responses of targeted species to a MPA network, with a clear timeline for those expectations, can aid in the development of a monitoring program that efficiently evaluates expectations over appropriate time frames. Here we describe the expected trajectories in abundance and biomass following MPA implementation for populations of 19 nearshore fishery species in California. To capture the process of filling in the age structure truncated by fishing, we used age‐structured population models with stochastic larval recruitment to predict responses to MPA implementation. We implemented both demographically open (high larval immigration) and closed (high self‐recruitment) populations to model the range of possible trajectories as they depend on recruitment dynamics. From these simulations, we quantified the time scales over which anticipated increases in abundance and biomass inside MPAs would become statistically detectable. Predicted population biomass responses range from little change, for species with low fishing rates, to increasing by a factor of nearly seven, for species with high fishing rates before MPA establishment. Increases in biomass following MPA implementation are usually greater in both magnitude and statistical detectability than increases in abundance. For most species, increases in abundance would not begin to become detectable for at least ten years after implementation. Overall, these results inform potential indicator metrics (biomass), potential indicator species (those with a high fishing:natural mortality ratio), and time frame (>10 years) for MPA monitoring assessment as part of the adaptive management process.

Regulatory control of adaptive fisheries: Reflections on the implementation of the landing obligation in the EU common fisheries policy

Bohman B. Regulatory control of adaptive fisheries: Reflections on the implementation of the landing obligation in the EU common fisheries policy. Marine Policy [Internet]. In Press :103557. Available from: https://www.sciencedirect.com/science/article/pii/S0308597X1930329X
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $35.95
Type: Journal Article

The most recently revised CFP Regulation, adopted in 2013, includes a number of significant changes with the aim to make fisheries more in tune with concept of the ecosystem approach and to avoid unsustainable exploitation of marine biological resources, including fish, as a natural resource. As part of that the CFP Regulation introduced the landing obligation, an obligation to land all catches as opposed to previous praxis where fisheries have been relying on a system of discarding fish and other marine biological resources in order to optimize their catch. One aim with the landing obligation is to push for new adaptive fishing methods and in a way to implement an ecosystem approach since the fishing strategies are meant to be adjusted to ecosystem factors. To be effective, the system for controlling implementation must be adjusted to take different aspects of the ecosystem approach into account. The paper presents some reflections on the required balance between adaptive approaches connected to the ecosystem approach and the strictness established by principles of rule of law in relation to the so called EU CFP landing obligation. It is concluded that the best way to create a control system adjusted to these factors seems to be by giving more influence to the industry itself. Involving those concerned at all levels, and thus applying all aspects of the regulatory governance under an ecosystem approach, would create an effective adaptive system where the rule of law is also safe-guarded.

The role of law in the regulation of fishing activities in the Central Arctic Ocean

Rayfuse R. The role of law in the regulation of fishing activities in the Central Arctic Ocean. Marine Policy [Internet]. In Press :103562. Available from: https://www.sciencedirect.com/science/article/pii/S0308597X19303665
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $35.95
Type: Journal Article

The history of commercial exploitation of fish stocks is replete with instances of over-exploitation and stock collapse. Particularly in situations where little is known about a species or a particular fish stock, unregulated expansion into new fisheries may effectively wipe out a species or stock before its existence is even formally recognised or understood. Globally, there has been a strong interest in ensuring that such a fate does not befall any fish stocks that either exist in or may migrate in future into the high seas portion of the Central Arctic Ocean. The Agreement to Prevent Unregulated High Seas Fisheries in the Central Arctic Ocean establishes a framework for the acquisition of science upon which precautionary, ecosystem-based management measures can be based, if and when they become necessary in the future. This article examines the role of international law in facilitating both the adoption of the Agreement and the adaptive management of fisheries in the high seas portion of the Central Arctic Ocean. It will be shown that the Agreement provides the initial framework for precautionary, ecosystem-based, adaptive and environmentally sound decision making regarding potential future fisheries in the Central Arctic Ocean.

Institutions and adaptive capacity for marine biodiversity conservation

Tuda AOmondi, Machumu MErnest. Institutions and adaptive capacity for marine biodiversity conservation. Environmental Science & Policy [Internet]. In Press . Available from: https://www.sciencedirect.com/science/article/pii/S1462901118305835
Freely available?: 
No
Summary available?: 
No
Approximate cost to purchase or rent this item from the publisher: 
US $35.95
Type: Journal Article

Marine protected areas (MPAs) remain central to the conservation of marine biodiversity, but enhancing their resilience under climate change require that organizations managing them are able to adapt. Social factors like institutions can affect organizational capacities to adapt to climate change. Yet our knowledge about how different institutional designs for protected areas affect management adaptive capacity is limited. We address this gap by comparing how two models of MPA governance - centralized and collaborative (co-management) - influence the adaptive capacities of public organizations managing MPAs in East Africa. Social network analysis is used to examine external relations of MPA organizations which are interpreted through the lens of social capital theory to explain the acquisition of information and knowledge that support adaptive capacity. We find differences in the ways focal MPA organizations in the centralized and co-managed MPA systems are connected to their external partners. In the centralized system, the focal MPA organization operates in a less connected network rich in opportunities to bridge disconnected groups that can be a source of novel and diverse information. Conversely, the focal MPA organization in the co-managed system operates in a dense network of interconnected organizations that are likely to have similar information, therefore providing redundant information benefits. The composition of partners around focal MPA organizations which determines information quality is not affected by MPA governance context. We conclude that institutional context affects the relational dimensions of adaptive capacity, by giving greater or fewer opportunities for the development of either bridging or bonding social capital.

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