Bonaire

Abstract

This study addresses the governance around climate change policies in two small islands in the Southern Caribbean. Like many other small islands across the world it is becoming increasingly clear that they are the most vulnerable to the effects of climate change like the increase in sea level rise, longer dry periods, loss of biodiversity, more extreme weather events (flooding and hurricanes) and increased fresh water demands (IPCC, 2014). To address such issues climate change adaptation policies will be necessary. The geographical focus of this research is the Southern Caribbean, specifically the islands of Curaçao and Bonaire. This study investigated what climate change adaptation policies are in place and could the policies be characterized as good governance? Policy documents were studied, and 22 semi-structured interviews were held with policy-makers and NGOs. First, a literature review of the concept of good governance was carried out to develop an analytical framework with principles and corresponding indicators for good governance. Second, the framework was applied to assess good governance in key climate policy documents of both islands. And third, the indicators of the framework were also used in the interviews with governmental stakeholders and NGOs, to assess from their perspectives good governance in climate policies. Curaçao and Bonaire have different jurisdictions, respectively an autonomous country in the Kingdom of the Netherlands and a Dutch municipality. Therefore, from a governance perspective it seemed interesting to compare both islands whether one jurisdiction is doing better than the other. The aims of the research are to reduce the knowledge gap on climate change adaptation in the Southern Caribbean, to develop a good governance framework, to assess good governance in climate change adaptation policies on both islands and to compare them. The last aim is what recommendations of enhancing good governance practices could be given. Results are that the developed analytical framework worked rather well and that the governance principles Transparency, Inclusiveness and Connectivity are relatively better in place than Accountability and Government Effectiveness. There are some differences between the islands but not striking.

Abstract

Carbonate clinoforms are often challenging to characterize and model due to their complex geometries and additional heterogeneity introduced by diagenetic processes. Dolomitization can influence petrophysical properties resulting in either an increase or reduction in porosity and permeability of the host rock and forms geobodies of varied shapes depending on pre-dolomitization permeability patterns and dolomitization mechanism. Therefore, in partially or fully dolomitized successions, the prediction of fluid flow behavior is not trivial. This study uses a well-studied outcrop analogue of Mio-Pliocene partially dolomitized clinoforms at Seru Grandi (Bonaire) to better understand fluid flow in different dolomitization scenarios. Clinothems consist of heterogeneous coralline algal facies overlying bioclastic facies, with dolomite geobodies truncated on their upper and lower bounds by clinoform surfaces. Digital outcrop models were used to characterize geometry and spatial relationship of facies and heterogeneity, such as clinoform dip, length, height, and spacing. Multiple realizations of clinoform and dolomite body geometries are modelled using a surface-based modelling (SBM) approach coupled with an unstructured mesh flow simulator (IC-FERST). Two scenarios are considered, in which dolomitization has resulted in either a decrease in porosity and permeability as observed in outcrop, or a relative increase of porosity and permeability values as a potential subsurface scenario. Flow simulation results reveal an exponential relationship between water breakthrough times and flow rates versus dolomite proportions. Additionally, the arrangement of the dolomite bodies (aligned vs. disjoined) exhibits very similar fluid flow behavior across a wide range of dolomite proportions. Sensitivity of flow behavior to the geological models is strongly dependent on dolomite permeability relative to precursor limestone. Dolomite body arrangement is more important for flow behavior at high dolomite proportions for low permeability dolomite, or at low dolomite proportions for high permeability dolomite. This study emphasizes the significance of having a good understanding of the dolomitization mechanism and dolomite body geometries, reducing uncertainty in dolomite distribution, petrophysical properties, and, therefore, fluid flow behavior.

Read more: https://www.sciencedirect.com/science/article/abs/pii/S0264817221004475

Abstract:

Tourism could be discussed as being a damaging phenomenon if not managed correctly as well as being destructive towards its own industry by its contribution towards climate change (UNWTO 2008; Glegg et al 2021; Grilli 2021). However, tourism is often considered to be highly important for the destination's economic and social development (Glegg et al 2021). Besides this, natural resources often tend to play an important role in the attractiveness of a destination (Fennell 2015; Uyarra et al 2009). A strategic tourism strategy is therefore needed in order to protect the natural resources of the destination, and in order to become economically, socially, and environmentally sustainable. The blue destination strategy could be defined as the sustainable use of ocean resources for growth, well-being, and jobs while protecting the oceans’ ecosystems’ health (Tourism Corporation Bonaire 2017). Bonaire is a small island in the Caribbean that, since 2017, has been implementing a blue destination approach as their destination development strategy. By examining the case of Bonaire, the study aims to develop a better understanding of the contribution of a development strategy towards a sustainable tourism industry within a tourism-oriented society, and aims to highlight the stakeholder’s perspective. This is trying to be obtained by answering the three research questions of what the tourism industry looks like on Bonaire, what is trying to be achieved with the blue destination company certification and what the blue destination strategy is as well as what effect it has had on Bonaire so far. In order to provide an answer, the study uses a triangularization method. Six interviews with stakeholders, document analysis, and statistical analysis were carried out. Results highlighted that tourism on Bonaire is an important driver for economic and social growth. The tourism industry on Bonaire is seen as highly dependent on the natural resources of the island, mainly its ocean. The blue company certification has been highlighted as a tool to ensure that sustainable criteria are met as well as an important tool for marketing and inspiring others to become more sustainable. Blue destination has then been highlighted as a way to create and ensure a tourism industry that generates economic welfare and stimulates sustainability for the whole island while highlighting the connection between human activity and the marine ecosystem that takes place in the ocean economy. Measurable effects have so far been minimal or not noticeable but stakeholders highlighted that it has helped by synergizing the island and providing better cooperation between stakeholders, leading to them having the same vision.

Map of Mangrove Populations of Lac Bay

Erdmann, W., Scheffers, A. 2006. Mangrove Population of Lac (Bonaire) 1961 and 1996,  Universität Duisburg-Essen - Institut für Geographie 

Ecological status of Lac Bay, Bonaire

Client: Departement voor Ontwikkelingssamenwerking Nederlandse Antillen (DEPOS)

Project nr: 90.04

For more information, contact Bureau Waardenburg BV https://www.buwa.nl/en/contact.html

Fishing provides an important source of income and livelihood on the Caribbean Island of Bonaire, also many people fish for recreational purposes. A large part of the catch is composed of reef-dependent species, which rely on the health and productivity of local coral reefs. To assist decision-makers in understanding and managing these fragile ecosystems contributing to Bonairean well being the economic value of reef-dependent fisheries is determined. Furthermore, the spatial distribution of the economic value of the reef fisheries is revealed to help decision makers understand which areas of reef are most economically important from a fisheries perspectives.

By estimating the economic value of the reef fisheries, which consists of both recreational and commercial fishing, the total socio-economic value of reef fishing on Bonaire is estimated. Commercial fishing is valued using the ‘net factor income approach’. The recreational value of the reef fisheries is calculated using both the ‘choice modelling’ and the ‘market valuation’ method. The commercial and recreational values are combined to arrive at a total, annual reef-fisheries value for the Island of Bonaire. This aggregate value is then combined with spatial fisheries production data using ArcGIS to create a fisheries value map of Bonaire.

The reef-related total commercial fisheries are valued at almost $400,000 annually. The recreational fishery value is estimated at an economic value of almost $700,000 per annum. These calculations have been used to create an allocation function, which estimates the spatial distribution of the fisheries value along the coral reefs of Bonaire. This in turn can be used to support long-term decision-making for example regarding specific locations for coastal zone development and its impact on commercial and recreational fisheries. 

Bonairean ecosystems support touristic activities that depend on the quality of the natural environment, such as diving, snorkelling, kayaking, boating, enjoying beaches, and participating in land activities. The tourism sector is an industry with substantial size and financial contribution to the economy of Bonaire. However, the economic value of the contribution of nature to Bonaire’s tourism has never been quantified, nor have the most important aspects of Bonairean nature for tourism been identified. It is essential that the economic value of the ecosystem service to tourism and the dependence of tourism on Bonairean ecosystems while impacting these same ecosystems be determined in order to further assist policy-makers in understanding this crucial relationship and support them in wise long-term decision-making.

To determine the value of Bonairean ecosystems for the tourism industry a survey among tourists visiting Bonaire is conducted. This study estimates the average expenditures of these visitors, as well as their Willingness-To-Pay (WTP) for protection of Bonairean nature. The result of this survey also elucidates tourists’ perceived value of different aspects of Bonairean nature. The socio-economic value of the ecosystem services for tourism is combined with spatial data to determine which ecosystems are the most economically valuable with regards to tourism.

The expenditure by tourists on Bonaire is found to be around $125 million annually. An estimated welfare of around $50 million dollars is contributed by Bonaire’s nature to tourism. Stay-over tourists are found to contribute more to the tourism industry than cruise tourists, and marine ecosystems are found to be more economically significant than terrestrial ecosystems on the island. The high WTP of tourists for additional nature protection in Bonaire provides opportunities for the local government to increase the current user fees of visitors to Bonaire. 

IVM Institute for Environmental Studies 

Fernando and I are at our one of our “high density” points (counting stations) on the Cargill Salt Production Facility in southern Bonaire. We are driving the dike roads stopping every 400m to carry out a 6-minute count, recording all the birds in a 200m radius around our point. A second team, Jeff Gerbracht (Cornell Lab of Ornithology) and Binkie van Es (St. Maarten Nature Foundation) are covering another part of the facility. The conditions can only be described as harsh—non-stop winds of 25-30 knots, blazing sun and salt foam blowing at us constantly. But the shorebirds love it, and so do we—there are not very many places where you can see such large concentrations and diversity of shorebirds so close.

We have so far encountered over 20 species of shorebirds and waterbirds using the Cargill ponds, including American Flamingo, Great Blue Heron, Tricolored Heron, Reddish Egret, Black-bellied Plover, Snowy Plover, Greater yellowlegs, Lesser Yellowlegs, Ruddy Turnstone, Stilt Sandpiper, Least Sandpiper, Semipalmated Sandpiper, Western Sandpiper, Short-billed Dowitcher, Red Knot and more. Depending on where the point is in the Cargill Facility, we might encounter zero birds in areas of deeper water, or mixed flocks numbering in the hundreds or even thousands in areas with shallow water or exposed flats.

How and why did these surveys get started? Two years ago, I had the chance to visit and tour the Cargill Salt Production Facility for the first time, thanks to Daniel Deanda (Production Manager), who attended our Wetlands Education Training Workshop in May 2014, hosted by STINAPA Bonaire. I was amazed at the number of migratory shorebirds and waterbirds on the property, including the stunningly beautiful American Flamingos which dot the stark landscape like pink flowers. I recognized that this small island and even smaller site was probably hugely important to migrant and wintering shorebirds, perhaps even qualifying as a Western Hemisphere Shorebird Reserve Network (WHSRN) site, a program set up by Manomet 30 years ago to protect the most important breeding, stopover, and wintering habitats for shorebirds throughout the Americas.

Compiled abundances of juvenile corals revealed no change over time in the Pacific, but a decline in the Caribbean. Using these analyses as a rationale, we explored recruitment and post-settlement success in determining coral cover using studies in the Caribbean (St John, Bonaire) and Pacific (Moorea, Okinawa). Juvenile corals, coral recruits, and coral cover have been censused in these locations for years, and the ratio of juvenile (J) to recruiting (R) corals was used to measure post-settlement success. In St John and Bonaire, coral cover was stable but different between studies, with the ratio of the density of juveniles to density of recruits (J : R) ~0.10; in Moorea, declines in coral cover were followed by recovery that was related to the density of juvenile corals 3 years before, with J : R ~0.40; and in Okinawa, a decline in coral cover in 1998 was followed by a slow recovery with J/R ~0.01. Coral cover was associated positively with juvenile corals in St John, and in Okinawa, the density of juvenile corals was associated positively with recruits the year before. J : R varied among studies, and standardised densities of juvenile corals declined in the Caribbean, but increased in the Pacific. These results suggest that differences in the post-settlement success may drive variation in coral community structure.

In 2010 a petrochemical fire took place at the BOPEC oil terminals on Bonaire. These facilities are located on the shores of the Goto lake, a legally protected RAMSAR wetland and important flamingo foraging area. Before the fire, daily flamingo counts averaged approximately 400 birds that used the area to feed on Artemia (brine shrimp) and Ephydra (brine fly larvae). Immediately after the fire, flamingo densities plummeted to nearly none and have not recovered. A large amount of fire retardants were used to combat the fire, and were hypothesised to be a potential cause for the flamingo declines. Our analyses of 15 years of baseline flamingo monitoring data show that rainfall does influence flamingo densities but only on the short-term and steering seasonal dynamics of flamingos. Therefore the rainfall event/change in the rainfall regime cannot account for lasting absence of flamingos. Nearby control lakes that were not affected by the fire showed no lasting reduction in flamingo densities, but instead an increase due to the birds no longer feeding in Goto.

In 2012, we measured the concentrations of polycyclic aromatic hydrocarbons (PAHs) and perfluorinated compounds (PFCs, which includes PFOS) in Goto and control-lake waters and conducted additional chemical screening (fingerprinting) of sediments and biota. These measurements showed both lasting elevated levels of PFCs, in water, sediments and biota (fish) and lowered food-species concentrations in Goto as compared to control areas. Based on calculated Risk Quotients combined with the chronic exposure, for the documented PFOS levels, toxicological effects on benthic organisms such as Artemia and Ephydra are likely. Nevertheless additional impact by other associated retardant toxicant is also probable. Goto was found to be chemically different based on GC*GC chemical fingerprinting indicative of elevated Butylated Hydroxytoluene (BHT) concentrations, a compound used in petrochemical industries as a solvent.

In conclusion, our results demonstrate a close link between the 2010 Bopec fires and the subsequent abandonment of the adjacent Goto lake by foraging flamingos. Compared to nearby control lakes, Goto was found to have elevated (and toxic) concentrations of PFCs and associated low food species concentrations. Therefore, our results suggest that the lasting abandonment of the lake by flamingos after the fire have been due to the drastically low food-species densities as likely caused by toxic ecosystem effects resulting from retardants released into the environment while combatting the fires.