Terrestial

In this report we review and assess possible consequences of climate change for the biodiversity of the Dutch BES islands (Bonaire, Saba and St. Eustatius), and present various options for adaptation. From our review it is quite clear that climate change not only poses a severe threat to the ecosystems of the BES islands, but also to the totality of benefits and services the inhabitants of these islands derive from those ecosystems. Key changes in climate expected this century include increases in air and sea surface temperature, an increase in sea level and ocean acidity, an increase in the frequency and intensity of storms and hurricanes, general aridification and greater overall unpredictability in weather. The consequences for both terrestrial and marine biodiversity are predicted to be far-reaching. The principal effects will likely include further losses to the coral reef systems, erosion of coasts and beaches, salinification of ground water sources, losses in hilltop vegetation and flora, soil humus losses and erosion, increases in various disease vectors, changes in ocean currents, fish recruitment and migration, and a stronger foothold for invasive species.

The main areas of environmental policy involving the management of biodiversity are those of land-use planning and zoning, forestry and terrestrial conservation, and marine conservation. As for land-use planning and zoning, main issues of concern will be the introduction of the 'set back' policy for coastal development, the preservation of the full range of key habitats, and sufficient habitat surface area to sustain minimum viable populations for native species. In addition these habitats must be ecologically connected to allow free movement of animals across the habitats they need throughout the different seasons of the year and phases of their life cycle. In terms of forestry and terrestrial conservation policy, the focus will especially need to be on solving the problem of uncontrolled grazing of livestock, and the implementation of reforestation and groundwater conservation. Key issues in marine conservation policy will be to tackle the technically and financially challenging problem of eutrophication and the socially controversial limits to the harvest of reef organisms.

While it is the large industrialized countries that drive man-induced climate change, it is the small island developing states (SIDS) and small coastal states that will suffer the most from climate change. In this respect it may be especially valuable for the BES islands to develop and participate in larger efforts to convince (pressure, lobby) the large industrialized nations to adopt those changes needed in their industrial and energy policies by which to avert the most disastrous scales of global climate change. As the stakes are obviously very high, the BES islands should seek to actively develop and/or participate in such efforts. However, to do this credibly and convincingly will require the islands to develop their own vision and policy and to implement important measures of their own. While the topic of climate change has recently come to the attention of government, preparation and readiness for climate change lags behind.

The main options for local adaptation measures as outlined all come down to just one principle: to 'manage for resilience' of the ecosystems as much as possible by reducing the stress induced by local anthropogenic pressures. This will require proper data and knowledge as well as a proper monitoring of impacts and results. In this, investment in baseline inventories, dedicated research and a monitoring system is essential.

If international resolve falters and precipitous global climatic change cannot ultimately be avoided, large ecological regime shifts may cause ecosystems and species in any given area to become ecologically untenable, and introduced species to become firmly established and impossible to eradicate. If so, it will be important to make hard choices and not waste valuable time and resources fighting lost causes. Therefore, in the future successful management of natural resources will often require managers and decisions makers to think differently than in the past, to abandon old paradigms and objectives, and to focus more on general ecosystem services than on specific details. Hence our ability and willingness to adaptively 'manage for change' will be critical, as will be the need for effective decision making under conditions of complexity, uncertainty and imperfect knowledge.

Autopsy records (1936-66) show esophageal cancer to be the most common tumor for both men and women among the locally-born negroid population of Curafao. Crude incidence rate of 20.9 per 100,000, virtually constant over 30 years, is exceeded only by that of certain parts of Russia and the Transkel region of South Africa. The island of Aruba (42 miles distant) has a very low incidence. Drought conditions and food and water supply are virtually identical in both islands, also reverse smoking by ~vomen only. But there are striking contrasts in the use of plants for remedies. In Curacao, more than 100 species of local plants are employed for self-medlcatlon and for "tea." Interrogation of living esophageal cancer victims and survivors of deceased has revealed consistent use of these plants. Species cited most frequently in interviews are being collected, lyophilized, and supplied to the Laboratory of Pathology, National Cancer Institute, for animal-testing

Abstract:

The Netherlands are signatories of the international Convention on Biological Diversity (CBD). This implies that the nation will protect biodiversity on its territory. This includes the protection of natural fauna and vegetation from negative impact caused by invasive alien species (see 2.1. for a definition). By 10-10-2010 the BES islands (Bonaire, St Eustatius and Saba) became ‘special municipalities’ of the Netherlands. They together form “Caribisch Nederland” (Caribbean Netherlands, Hulanda Karibe). Due to this stronger link to the Netherlands many responsibilities have moved from the Antillean government to the Netherlands. This includes important responsibilities with respect to the protection of nature.

The present study was financed by the Dutch Ministry of Economic Affairs, Agriculture and Innovation and included a literature study, a field trip and writing of the present document with main observations, conclusions and recommendations. A major part of the report consists of an alphabetical list of (known) invasives with their current status (4.1.1.). Apart from the three islands belonging to Caribisch Nederland, for completeness, some attention is given to Aruba, Curacao and St. Maarten as well (esp. in 4.1.1. and Appendix II).

Stages of invasion
In order to define the problem of invasive alien (non-native) species of plants more accurately it is relevant to recognise the following categories:

Exotic: Species that are not part of the natural indigenous vegetation are called exotics. Examples are introductions as ornamental or agricultural species. If contained within the confines of gardens and farms, these species are not considered problematic.

Established: Species that occur ‘in the wild’, i.e. outside the control of cultivation or husbandry and are able to reproduce themselves resulting in new individuals, we call established (present). Species can stay in this phase, the ‘lag phase’ (see 2.1), for quite some time. It is the stage in which the species adapts to its new environment using its genetic flexibility. At this stage complete eradication is still an option, because the number of individuals and locations is limited. This means that the costs can be relatively low, compared to eradication at a later stage.

Naturalised: If given enough time, species may start to adapt genetically to the new environment, by optimising its physiology and/or growth habit. As a result the species will start spreading more rapidly and effectively and becoming part of the natural flora. In most cases this is not considered a major problem; the plants will get their own function within the ecology of the island and will not replace indigenous species entirely. Moreover, the costs of complete eradication have become prohibitive at this stage, so only containment is an option.

Invasive: It is generally believed that about one in one thousand exotics becomes really problematic, e.g. with respect to environmental, ecological or economical impact (Williamson 1995). They start to grow out of control, massively invade natural habitats and reduce or eliminate native species. They have broken down the dispersal barrier and have become invasive. At this stage one can only try to achieve a stage of equilibrium, of mitigation, by intensive control measures. These are usually limited by financial resources, and can normally only be successful with commitment of the local society, e.g. shown by the enthusiastic support and hand labour of many volunteers.

Invasives of the Caribbean Netherlands
In this report 65 species of invasives are enumerated (4.1.1.) with their history and properties, based on a literature survey and completed with experience and findings of the authors. Four of the main problematic species are treated more extensively in 4.1.2. These are the Coral vine (Antigonon leptopus) which poses a great threat to nature, especially in St. Eustatius; the Rubber vine (Cryptostegia grandiflora) which is able to overgrow and smother shrubs and trees and is especially spreading on the Leeward Islands; the neem tree (Azadirachta indica) which is planted for shade and medicinal purposes, but is escaping on Bonaire; and ‘Donna grass’ (Bothriochloa pertusa) which is a very problematic species replacing the more palatable local grasses on the Windward Islands, most notably on St. Eustatius.

In a complementary list a further 80 species that need more investigation are mentioned (4.1.3.). This list is not complete but it enumerates species that are present on at least one of the islands. They need special attention because it is best to prevent them from entering at all or to eliminate the few plants or populations that have established themselves. Some species in this list are already present at some scale, like some of the arable weeds, but need careful monitoring to prevent them from entering nature.

A general problem are the free-roaming animals, cows, donkeys and especially goats (all non- native species) that are destroying nature in an uncontrolled way. Their presence has a detrimental effect on biodiversity, eating young seedlings and trees, and thereby preventing the natural regeneration and succession. Moreover, the bare soils that result are susceptible to water and wind erosion; material that is deposited in the surrounding seas.

Management recommendations:

Before an exotic has been introduced prevention is the most important action, i.e. keep the chance that exotic species may be introduced as low as possible. As soon as a first introduction has been realised and the exotic still occurs at low densities at few sites, eradication after first observation will be the most important action. Finally, if an exotic has already spread over different sites or even different habitats and has increased in densities, eradication might not be an achievable option anymore. Then containment and population management will be the most relevant actions to minimise the negative impact (mitigation). In general, prevention will generate the most cost-effective options to avoid problems due to invasive exotic plants (Davis 2009). The main observations are:

Prevention: Prevention plans need to be developed with regulations restricting the import of exotic species. This includes the development of ‘Black lists’ for the Leeward and Windward Islands respectively. Public awareness (customs and other officials, general public, landscapers, new inhabitants) must be raised and alternatives for imported exotics must be offered. Agricultural departments and customs offices on all islands are understaffed and not able to control the many routes through which exotics enter.

Eradication after first observation: Rapid first observation of an exotic plant after introduction into the wild is essential for the success of an eradication action. Therefore a ‘Watch list’ or ‘Grey List’ needs to be developed. Since the difference in climates, these watch lists will partly differ between islands and differ even more between the Leeward and Windward islands. Also knowledge about the natural flora and invasives must be increased through education, at schools as well as for professionals (rangers, customs personnel, agricultural department, etc.). Floras for the Windward Islands are outdated and not accessible.

Containment/population management: Management plans need to be developed for the control Antigonon, Cryptostegia and neem to be able to stop further spreading and to mitigate the impact on nature. Research on the life cycle of invasives and experiments for their control have to be carried out. The problem of roaming animals must be tackled. Small island communities are not able to do this without outside assistance. If chemical control is considered, special Dutch Caribbean regulations apply based on restricted import permissions for crop protection agents.  

This document will clearly define the V ision, Mission and Goals of The Quill/Boven National Park and Botanical Garden, and s tate the management s trategies which will allow The Q uill/Boven National Park and Botanical Garden successes to be highlighted and its management effectiveness to be assessed. It will also assis t both staff and Board by providing a solid framework for re ference, decision making and planning . The management plan will also ensure continuity of management effort and allow s takeholders and other interest groups to understand and participate in the planning process. According to IUCN , management plans are an essential s tep towards ensuring the proper management of protected areas .

This is the second management plan for The Quill/Boven National P ark and Botanical Garden. The firs t management plan (for the Q uill/Boven National Park) was written in 1999 by Staatsbosbeheer for the period 2000-2004. The rapid development of The Q uill/Boven National Park and Botanical Garden and the suc cesses in management have highlighted the need for a strategic document to consolidate management decision making. M anagement planning a nd a clear s trategy for management is a prerequisite if management is going to begin monitoring its own e ffec tivenes s .

1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. CBD Implementation in EU Overseas Entities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 CBD Commitments and Compliance an the EU Overseas Entities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Biodiversity Planning in the Overseas Entities, Status and Responsibilities. . . . . . . . . . . . . . . . . . . . . . . 3 2.3 Main Actions Implemented. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 Main Results Obtained. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. Collaboration and Linkages in Support of CBD and Nbsap Implementation in the EU Overseas Entities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Between the Overseas Entities and the CBD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Between the Overseas Entities and Institutions in the EU Member States. . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Between and Among Overseas Entities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.4 Between the Overseas Entities and Their Geographic Regions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.5 Between the Overseas Entities and the EU Institutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.6 Between Overseas Entities and Global Networks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4. Critical Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1 Constitutional and Institutional Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.2 Policy Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 Resource Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.4 Information and Knowledge Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.5 Implementation Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5. Principles to Guide Future Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6. Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6.1 Recommendations in Relation to EU Institutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6.2 Recommendations to EU Member States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.3 Recommendations to Actors in ORs and OCTs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.4 Recommendations to Regional Institutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.5 Recommendations to the CBD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.6 Recommendations to Glispa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.7 Recommendations to IUCN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Abstract:

With the new status of special municipality Bonaire’s development aims have focused toward more efficient  sustainable policies. With centuries of human intervention, ecosystem degradation, pressure of invasive species and tourism industry, services associated with biodiversity are threatened by developmental needs. The Amazona barbadensis parrot is of special conservation concern due to the vulnerability to habitat degradation and poaching and its small range restricted to Bonaire and Northern Venezuela. We ask whether the spatial development plan of Bonaire (ROB) for the coming years has an either positive or negative effect on the parrot population in the island. We used METAPHOR, an individual-based stochastic population model in order to estimate the population trend for the next 200 years. We use two cases, poaching and no poaching, and four scenarios, Current, two scenarios contemplated in the ROB and one scenario of goat control and vegetation recovery that changes nest availability.For all the scenarios the model showed great stability around the year 100.Reducing poaching and controlling goats increased the population in each scenario with c. 50%. The ROB scenarios did not increase the population size or made it significantly lower, as only the (minor) impact on carrying capacity was taken into account. The estimated population size under current conditions was ~1800. Increasing poaching to 50% diminished this valued until 1000 while the poaching didn’t affect the age structure. Increasing availability of nests to 130 raised the population to 3000. The used survival of 87% for fledges and adults showed to be the most optimistic case in the sensitivity analysis warning about the real status of the population and the high uncertainty of the model. The control of the invasive goats has been a conservation success in other islands and showed to have the best outcome for the modelled population. Whether it is control of goats or vegetation restoration, increasing vegetation cover would favour conservationist and economic aims providing habitat for plant and animal communities and  providing more valuable services for terrestrial ecotourism.

The literature on the endemic flora and fauna of the Dutch Lesser Antilles is scattered and often difficult to find. An initial compilation amounts to 163 extant terrestrial and freshwater taxa (121 nominate species and 42 subspecies) and 58 marine taxa (all nominate species) which are either restricted to one or more of the ABC islands, or which otherwise have a limited geographical distribution in the Southern Caribbean (i.e. endemic). In addition, a total of 39 endemic fossil taxa are listed.

The breakdown for extant endemic terrestrial and freshwater species and subspecies is as follows: plants (22 sp.); arachnids and insects (40 sp. + 4 ssp.); freshwater and subterranean crustaceans (25 sp. + 3 ssp.); freshwater polycheats, flatworms, rotatoria (7 sp.); terrestrial gastropods (15 sp. + 5 ssp.); fresh- brackishwater fishes (2 sp. + 1 ssp.); reptiles (9 sp. + 3 ssp.); birds (22 ssp.); 4 mammals (1 sp. + 4 ssp.).

Marine endemism especially concerns marine gastropod mollusks, many of which show direct development or have short larval dispersive stages. Other marine taxa probably contain significant endemism as well but have not been included because of a lack of information.