scholarly journals Using a residency index to estimate the economic value of saltmarsh provisioning services for commercially important fish species

2019 ◽  
Author(s):  
Hannah A. McCormick ◽  
Roberto Salguero-Gómez ◽  
Morena Mills ◽  
Katrina Davis

ABSTRACTEvery year, 100 hectares of saltmarsh in the United Kingdom are lost due to sea level rise. The remaining areas are threatened by land conversion, agricultural activities, and climate change. There are important economic consequences to saltmarsh loss, as saltmarsh provides valuable ecosystem services including flood protection, carbon sequestration, and nursery habitat for commercially fished species. Quantifying the economic value of these ecosystem services can help target policies for saltmarsh restoration, or ‘managed realignment’, of new saltmarsh areas. In this study, we quantify the economic value of saltmarsh as a habitat for commercially fished species by developing a residency index. The residency index weights the relative importance of saltmarsh along a species’ lifecycle by explicitly incorporating the target species’ life histories and the estimated proportion of time it spends in saltmarsh at juvenile and adult life stages. Using this index, we estimate the value of saltmarsh to UK commercial fisheries landings. We find that UK saltmarsh contributes annually between 16.7% and 18.2% of total UK commercial landings for European seabass (Dicentrarchus labrax), European plaice (Pleuronectes platessa), and Common sole (Solea solea). Our findings highlight the importance of saltmarsh protection and restoration. Furthermore, our approach provides a general framework that integrates population ecology methods and economic analyses to assess the value of saltmarsh and other coastal habitats for fisheries worldwide.

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2099 ◽  
Author(s):  
Harpinder Sandhu ◽  
Benjamin Waterhouse ◽  
Stephane Boyer ◽  
Steve Wratten

Ecosystem services (ES) such as pollination are vital for the continuous supply of food to a growing human population, but the decline in populations of insect pollinators worldwide poses a threat to food and nutritional security. Using a pollinator (honeybee) exclusion approach, we evaluated the impact of pollinator scarcity on production in four brassica fields, two producing hybrid seeds and two producing open-pollinated ones. There was a clear reduction in seed yield as pollination rates declined. Open-pollinated crops produced significantly higher yields than did the hybrid ones at all pollination rates. The hybrid crops required at least 0.50 of background pollination rates to achieve maximum yield, whereas in open-pollinated crops, 0.25 pollination rates were necessary for maximum yield. The total estimated economic value of pollination services provided by honeybees to the agricultural industry in New Zealand is NZD $1.96 billion annually. This study indicates that loss of pollination services can result in significant declines in production and have serious implications for the market economy in New Zealand. Depending on the extent of honeybee population decline, and assuming that results in declining pollination services, the estimated economic loss to New Zealand agriculture could be in the range of NZD $295–728 million annually.


One Ecosystem ◽  
2021 ◽  
Vol 6 ◽  
Author(s):  
Enrique Casas ◽  
Laura Martín-García ◽  
Francisco Otero-Ferrer ◽  
Fernando Tuya ◽  
Ricardo Haroun ◽  
...  

Cymodocea nodosa seagrass meadows provide several socio-economically ecosystem services, including nurseries for numerous species of commercial interest. These seagrasses are experiencing a worldwide decline, with global loss rates approaching 5% per year, mainly related to coastal human activities. Cymodocea nodosa, the predominant seagrass in the Canary Archipelago (Spain), is also exposed to these threats, which could lead to habitat loss or even local disappearance. In this case study, we estimated the potential economic value of Cymodocea nodosa seagrass meadows for local fisheries at an archipelago scale. Habitat suitability maps were constructed using MAXENT 3.4.1, a software for modelling species distributions by applying a maximum entropy machine-learning method, from a set of environmental variables and presence and background records extracted from historical cartographies. This model allows characterising and assessing the C. nodosa habitat suitability, overcoming the implicit complexity derived from seasonal changes in this species highly dynamic meadows and using it as a first step for the mapping and assessment of ecosystem services. In a second step, value transfer methodologies were used, along with published economic valuations of commercially-interesting fish species related to C. nodosa meadows. We estimate that the potential monetary value of these species can add up to more than 3 million euros per year for the entire Archipelago. The simplicity of the proposed methodology facilitates its repeatability in other similar regions, using freely available data and hence, being suitable for data-scarce scenarios.


PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5411
Author(s):  
Julie Peacock ◽  
Joey Ting ◽  
Karen L. Bacon

The estates of stately homes or manor houses are an untapped resource for assessing the ecosystem services provided by trees. Many of these estates have large collections of trees with clear value in terms of carbon storage, runoff prevention, and pollution removal along with additional benefits to biodiversity and human health. The estate of Harewood House in North Yorkshire represents an ideal example of such a stately home with a mixture of parkland and more formally planted gardens. The trees in each type of garden were analysed for height, diameter at breast height and light exposure. The data were then processed in iTrees software to generate economic benefits for each tree in both gardens. The analysis found that the larger North Front parkland garden had greater total benefits but the more densely planted formal West Garden had the greater per hectare value. In total, the trees on Harewood House estate are estimated to provide approximately £29 million in ecosystem service benefits. This study is the first to analyse the trees of stately homes for economic benefits and highlights that the trees are a valuable commodity for the estates. This should be considered in future planning and management of such estates.


2019 ◽  
Vol 11 (4) ◽  
pp. 1235-1249 ◽  
Author(s):  
A. Mentzafou ◽  
A. Conides ◽  
E. Dimitriou

Abstract Coastal ecosystems are linked to socio-economic development, but simultaneously, are particularly vulnerable to anthropogenic climate change and sea level rise (SLR). Within this scope, detailed topographic data resources of Spercheios River and Maliakos Gulf coastal area in Greece, combined with information concerning the economic value of the most important sectors of the area (wetland services, land property, infrastructure, income) were employed, so as to examine the impacts of three SLR scenarios, compiled based on the most recent regional projections reviewed. Based on the results, in the case of 0.3 m, 0.6 m and 1.0 m SLR, the terrestrial zone to be lost was estimated to be 6.2 km2, 18.9 km2 and 31.1 km2, respectively. For each scenario examined, wetlands comprise 68%, 41% and 39% of the total area lost, respectively, reflecting their sensitivity to even small SLR. The total economic impact of SLR was estimated to be 75.4 × 106 €, 161.7 × 106 € and 510.7 × 106 € for each scenario, respectively (3.5%, 7.5% and 23.7% of the gross domestic product of the area), 19%, 17% and 8% of which can be attributed to wetland loss. The consequences of SLR to the ecosystem services provided are indisputable, while adaptation and mitigation planning is required.


2020 ◽  
Vol 3 (1) ◽  
pp. 80
Author(s):  
Muniyandi Balasubramanian

Forest ecosystem services have played a vital role in human well-being. Particularly, recreational ecosystem services are creating physical and mental well-being for human beings. Therefore, the main objective of the paper is to estimate the economic value of recreational ecosystem services provides by recreational sites such as Nandi Hills and Nagarhole National Park based on the individual travel cost method in Karnataka, India. This study has used a random sampling method for 300 tourist visitors to recreational sites. The present study has also estimated the consumer surplus of the visitors. The results of the study have found that (i) economic value of two creational sites has been estimated at US $323.05 million, (ii) the consumer surplus has been estimated for Nandi Hills at US $7.45 and Nagarhole National Park at US $3.16. The main implication of the study is to design the entry fees for the recreational site and sustainable utilization of recreational ecosystem services for the present and future generations.


Author(s):  
Chris Holmes

In the particular and peculiar case of the Booker Prize, regarded as the most prestigious literary award in the United Kingdom (as measured by economic value to the author and publisher, and total audience for the awards announcement), the cultural and economic valences of literary prizes collide with the imperial history of Britain, and its after-empire relationships to its former colonies. From its beginnings, the Booker prize has never been simply a British prize for writers in the United Kingdom. The Booker’s reach into the Commonwealth of Nations, a loose cultural and economic alliance of the United Kingdom and former British colonies, challenges the very constitution of the category of post-imperial British literature. With a history of winners from India, South Africa, New Zealand, and Nigeria, among many other former British colonies, the Booker presents itself as a value arbitrating mechanism for a majority of the English-speaking world. Indeed, the Booker has maintained a reputation for bringing writers from postcolonial nations to the attention of a British audience increasingly hungry for a global, cosmopolitan literature, especially one easily available via the lingua franca of English. Whether and how the prize winners avoid the twin colonial pitfalls of ownership by and debt to an English patron is the subject of a great deal of criticism on the Booker, and to understand the prize as a gatekeeper and tastemaker for the loose, baggy canon of British or even global Anglophone literature, there must be a reckoning with the history of the prize, its multiplication into several prizes under one umbrella category, and the form and substance of the novels that have taken the prize since 1969.


2013 ◽  
Vol 41 (2) ◽  
pp. 608 ◽  
Author(s):  
Bogdan POPA ◽  
Claudiu COMAN ◽  
Stelian A. BORZ ◽  
Dan M. NITA ◽  
Codrin CODREANU ◽  
...  

In the last two decades different methodologies for assessing the economic implications of protected areas have been developed within the framework of "Total Economic Value", taking into account not only goods and services that have a price and a market but also those not priced or marketed. The present paper, by using a number of recognized methodologies applied by environmental economists around the world, estimates the economic value of ecosystem services of Piatra Craiului National Park, in one of the first attempts to frame ecosystem services valuation in Romania. The approach and results include a benefit distribution analysis, for both the economic sectors and the groups of beneficiaries. Even if the data are not comprehensive and depend on several assumptions, the paper provides very important practical and policy-relevant information on the economic value of Piatra Craiului National Park, in an attempt to stimulate increasing of the budgetary allocation and economic policy priority for protected areas in Romania.


2018 ◽  
Vol 04 (04) ◽  
pp. 1850022 ◽  
Author(s):  
Benjamin A. Jones ◽  
John Fleck

Managing outdoor water use while maintaining urban tree cover is a key challenge for water managers in arid climates. Urban trees generate flows of ecosystem services in arid areas, but also require significant amounts of irrigation. In this paper, a bioeconomic-health model of trees and water use is developed to investigate management of an urban forest canopy when irrigation is costly, water has economic value, and trees provide ecosystem services. The optimal tree irrigation decision is illustrated for Albuquerque, New Mexico, an arid Southwest US city. Using a range of monetary values for water, we find that the tree irrigation decision is sensitive to the value selected. Urban deforestation is optimal when the value of water is sufficiently high, or alternatively starts low, but grows to cross a specific threshold. If, however, the value of water is sufficiently low or if the value of tree cover rises over time, then deforestation is not optimal. The threshold value of water where the switch is made between zero and partial deforestation is well within previously identified ranges on actual water values. This model can be applied generally to study the tradeoffs between urban trees and water use in arid environments.


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