Rethinking Our Global Coastal Investment Portfolio

Coastal gray infrastructure, including roads, bridges, and buildings, is critical for communities, and we invest significantly in it. We also invest in the restoration and maintenance of coastal green infrastructure such as wetlands and reefs, which provide many services and benefits to human communities. However, the relative scale of financial investments in different coastal sectors – that is, our global coastal investment portfolio – remains poorly understood. We identify some of the major sources of funding for coastal green and gray infrastructure globally, including international aid funds; US public and private funds for coastal conservation, restoration and management; and private (insurance) and public funds spent on rebuilding after coastal storms. For the 10-year period from 2004-2013, we identify a total of US $14 billion in funds for coastal conservation and green infrastructure and$198 billion in international aid funds for coastal grey infrastructure. Coastal storms during the same decade caused an estimated US $514 billion in damages globally, of which$214 billion were insured losses, while $3.5 billion in international aid funds were spent on relief and reconstruction after these storm events. We conclude that funds for green infrastructure make up a small fraction – roughly three per cent – of global financial investments along coastlines. We identify the major funders in different coastal spending categories and discuss ways to move toward a more balanced investment portfolio that could benefit biodiversity, prevent billions of dollars of storm damage, and help protect the lives and livelihoods of coastal residents

Financing Natural Infrastructure for Coastal Flood Damage Reduction

This paper explores financial tools for investing in natural infrastructure to reduce current and future risks from flooding. The key conclusions are: 1) There is a large and growing pool of funding for natural infrastructure, but the availability is geographically uneven and providing sufficient resources will require significant actions by industry, government, scientists, and communities. There are both public and private sources that can fund natural infrastructure for flood risk reduction. Approaches vary among the U.S., Europe, and international development organizations. For example, funding for natural flood control infrastructure is a byproduct of other purposes in the U.S., but recognized as a specific purpose in Europe and by development organizations. The opportunities for investments in natural infrastructure are shaped by various factors, including local geography, type and extent of ecosystems, knowledge about local flood risks, approaches to funding ecosystem conservation, the capacity of financing systems, and the socioeconomic status of communities. The types and amounts of funding for natural infrastructure can be expected to grow because of innovations such as catastrophe bonds, but current institutional structures are often ill-suited to take advantage of existing and emerging opportunities and are not prepared to meet increasing risk. 2) There is no single appropriate financing mechanism for natural infrastructure. Financing should reflect the distribution of public or private benefits of flood protection through the payment mechanism as determined by specific local conditions. The appropriate funding approach will depend on several factors, including local natural conditions (geography, ecosystems), local governance (including the socioeconomic status of communities), the condition of national financial systems (including the robustness of public or private property insurance markets), and public policies that explicitly support the use of natural infrastructure. We identify the key characteristics of these factors that should influence decisions on appropriate funding mechanisms. 3) he largest opportunities for funding are in the redirection of post-disaster recovery funds to pre-disaster investments in risk reduction. Flood risk reduction should be undertaken before the flood occurs, but we currently spend much more on recovery efforts than on risk reduction. The greatest opportunities to increase resources for risk reduction lie in combining funds for risk reduction with funds for flood recovery. These investments will further reduce damages to lives, properties, and communities over time. • Recent innovations such as catastrophe and resilience bonds offer potential approaches to combining recovery and risk reduction, while green bonds may provide pre-disaster financing under appropriate conditions. 4) The largest barriers for securing adequate resources are: identifying locations where natural infrastructure can play a significant role in flood risk reduction; developing the experience and standards to overcome institutional biases in favor of “proven” gray infrastructure; and developing institutional arrangements capable of matching available funding with the needs of individual situations. To develop new financing, it is critical to develop a body of experience that would expand the existing foundation of natural systems management, risk assessment, and valuation analysis of natural infrastructure, and increase its acceptance and use. The identification of viable projects for nature based risk reduction is critical for expanding pools of available funds. The identification of specific projects- including the location, the ecosystem restoration methods, the expected benefits, and the regulatory feasibility- will often need to be included in the up-front costs of the development of new financing vehicles. Infrastructure banks are an example of institutions that can be structured to match funders with specific needs. These banks can pool the funding needs of different natural infrastructure projects to make them attractive to private capital markets. It will be necessary to create special purpose organizations that can capture the benefits of risk reduction in ways that support market-based finance. The funding strategy to be used for any specific project will depend primarily on the geographic, economic, and institutional circumstances in each location. But it is possible to create a general framework to catalogue the different approaches to financing, from which locally-determined funding strategies can be formed. This paper proposes such a framework, then outlines and examines the options currently available under the framework, and concludes with an assessment of how funding may expand in the future

The Protective Role of Coastal Marshes: A Systematic Review and Meta-analysis

BACKGROUND: Salt marshes lie between many human communities and the coast and have been presumed to protect these communities from coastal hazards by providing important ecosystem services. However, previous characterizations of these ecosystem services have typically been based on a small number of historical studies, and the consistency and extent to which marshes provide these services has not been investigated. Here, we review the current evidence for the specific processes of wave attenuation, shoreline stabilization and floodwater attenuation to determine if and under what conditions salt marshes offer these coastal protection services. METHODOLOGY/PRINCIPAL FINDINGS: We conducted a thorough search and synthesis of the literature with reference to these processes. Seventy-five publications met our selection criteria, and we conducted meta-analyses for publications with sufficient data available for quantitative analysis. We found that combined across all studies (n = 7), salt marsh vegetation had a significant positive effect on wave attenuation as measured by reductions in wave height per unit distance across marsh vegetation. Salt marsh vegetation also had a significant positive effect on shoreline stabilization as measured by accretion, lateral erosion reduction, and marsh surface elevation change (n = 30). Salt marsh characteristics that were positively correlated to both wave attenuation and shoreline stabilization were vegetation density, biomass production, and marsh size. Although we could not find studies quantitatively evaluating floodwater attenuation within salt marshes, there are several studies noting the negative effects of wetland alteration on water quantity regulation within coastal areas. CONCLUSIONS/SIGNIFICANCE: Our results show that salt marshes have value for coastal hazard mitigation and climate change adaptation. Because we do not yet fully understand the magnitude of this value, we propose that decision makers employ natural systems to maximize the benefits and ecosystem services provided by salt marshes and exercise caution when making decisions that erode these services

Toll-like receptor 3 activation is required for normal skin barrier repair following UV damage.

UV damage to the skin leads to the release of noncoding RNA (ncRNA) from necrotic keratinocytes that activates Toll-like receptor 3 (TLR3). This release of ncRNA triggers inflammation in the skin following UV damage. Recently, TLR3 activation was also shown to aid wound repair and increase the expression of genes associated with permeability barrier repair. Here, we sought to test whether skin barrier repair after UVB damage is dependent on the activation of TLR3. We observed that multiple ncRNAs induced expression of skin barrier repair genes, that the TLR3 ligand Poly (I:C) also induced expression and function of tight junctions, and that the ncRNA U1 acts in a TLR3-dependent manner to induce expression of skin barrier repair genes. These observations were shown to have functional relevance as Tlr3-/- mice displayed a delay in skin barrier repair following UVB damage. Combined, these data further validate the conclusion that recognition of endogenous RNA by TLR3 is an important step in the program of skin barrier repair

A comparison of bribery and bidding in thin markets

This paper compares bribery to competitive bidding in a government purchasing context. While competitive bidding is one method of procurement, bribery is a common alternative in many Third World countries. Although bribery is often considered to be the ethical antithesis of competitive bidding, the analysis shows there is a fundamental isomorphism between bribery and competitive bidding on the supply side of the transaction.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/26307/1/0000392.pd

How much marsh restoration is enough to deliver wave attenuation coastal protection benefits?

© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Castagno, K., Ganju, N., Beck, M., Bowden, A., & Scyphers, S. How much marsh restoration is enough to deliver wave attenuation coastal protection benefits? Frontiers in Marine Science, 8, (2022): 756670, https://doi.org/10.3389/fmars.2021.756670.As coastal communities grow more vulnerable to sea-level rise and increased storminess, communities have turned to nature-based solutions to bolster coastal resilience and protection. Marshes have significant wave attenuation properties and can play an important role in coastal protection for many communities. Many restoration projects seek to maximize this ecosystem service but how much marsh restoration is enough to deliver measurable coastal protection benefits is still unknown. This question is critical to guiding assessments of cost effectiveness and for funding, implementation, and optimizing of marsh restoration for risk reduction projects. This study uses SWAN model simulations to determine empirical relationships between wave attenuation and marsh vegetation. The model runs consider several different common marsh morphologies (including systems with channels, ponds, and fringing mudflats), vegetation placement, and simulated storm intensity. Up to a 95% reduction in wave energy is seen at as low as 50% vegetation cover. Although these empirical relationships between vegetative cover and wave attenuation provide essential insight for marsh restoration, it is also important to factor in lifespan estimates of restored marshes when making overall restoration decisions. The results of this study are important for coastal practitioners and managers seeking performance goals and metrics for marsh restoration, enhancement, and creation