Indonesia is the world largest producer of the red seaweeds Kappaphycus and Eucheuma; however, this country is facing significant challenges such as disease outbreaks, epiphyte infestations and a loss in seedling quality. Biosecurity practices have been widely adopted in other aquaculture sectors and when enforced can help to limit the introduction and spread of diseases and pests. To assess current capacity for biosecurity in seaweed aquaculture in Indonesia, a systematic analysis of policy frameworks including legislation, regulatory tools, and national standards was conducted. Biosecurity themes and risks were used to evaluate current national biosecurity content. The results identified major challenges faced by the industry in order to implement biosecurity policies in practice. Barriers to implementation included unspecific reference to the seaweed aquaculture sector, limited variety of approaches to biosecurity, limited use of up-to-date scientific evidence, insufficient guidance for the use of precaution and insufficient inclusion of specific biosecurity hazards. In general, although national regulations are currently under revision, current policies indicate a lack of clarity where biosecurity is included. Six recommendations are suggested to incorporate proactive biosecurity actions into current frameworks, with the aim of improving the health and sustainability of the seaweed aquaculture sector in Indonesia.
Seaweed aquaculture has been practiced for over five decades in Indonesia following the introduction of the red carrageenan-producing species Eucheuma sp. and Kappaphycus spp. in the late 1960s and 1980s, respectively (Hurtado et al. 2016; Neish et al. 2017). Production of this crop increased exponentially and Indonesia is currently the largest global producer of these species, with a total production of 10.11 million tonnes fresh weight (FW) and a value of 755 million US$ in 2015 (Food Agriculture Organization Fisheries and Aquaculture Information and Statistics Branch FAO-FIGIS 2019). This industry directly supports approximately one million farmers and indirectly supports their households, who are often not reported in statistics as workers (Food Agriculture Organization 2016; Badan Pusat Statistik 2017a, b). As the global market demand for this crop increases (Campbell and Hotchkiss 2017), the Indonesian government is active in promoting the sustainable growth of the industry through supportive legislation and policies. Recent additions to legislation include protection and empowerment of farmers (National Legislation Law No. 7/2016), tax-free importation of cultivation equipment (Government Regulation PPRI No.81/2015), provision of a national competency qualification in seaweed processing from the Ministry of Labor (Ministerial Regulation No.107/2016) and new regulations for seedling distribution (Ministerial Regulation No.217/PER-DJPB/2017). As a result of this government support, seaweed cultivation is now practiced in 31 of the 34 provinces in Indonesia (Badan Pusat Statistik (BPS) 2017a).
Despite the government drive to support and regulate the seaweed industry, growth in production remains limited. One of the major limiting factors is the increase in outbreaks of ‘ice-ice’ disease and epiphytic pests, which cause a decline in crop quality and lead to total crop loss (Largo et al. 2017; Loureiro et al. 2017; Reddy et al. 2017; Syafitri et al. 2017). In 2000–2001, the region of Kepulauan Seribu reported crop losses by diseases of up to 80%, with Lombok, South Sulawesi and Central Sulawesi reporting a 50% loss, and Kalimantan and Moluccas a 30% loss (Ministry of Marine Affair and Fisheries (MMAF-KKP) 2002; Yulianto 2004). This outbreak has since continued and has led to a significant decline in several formerly productive areas in North Sulawesi, North Moluccas, South and East Kalimantan, West Papua and Gorontalo between 2011 and 2015 (Fitrian 2015; Badan Pusat Statistik (BPS) 2017a). In addition to direct loss resulting from disease, the widespread practice of repetitive vegetative propagation has had an impact on seedling vigour, resulting in reduced crop quality, quantity and ability to resist diseases (Dawes et al. 1993; Halling et al. 2013; Yong et al. 2014; Hayashi et al. 2017; Reddy et al. 2017; Hurtado et al. 2019).
The introduction of new species to combat the loss of vigour and the transportation of live seedlings or seed stock is often practiced to support the development of seaweed aquaculture (Bindu and Levine 2011; Valderrama et al. 2015; Hayashi et al. 2017; Hwang et al. 2018; Hurtado et al. 2019). However, these practices are well documented as major pathways for introducing and facilitating the spread of diseases and pests in seaweed aquaculture worldwide (Sulu et al. 2004; Largo et al. 2017; Loureiro et al. 2017; Badis et al. 2019; Ward et al. 2019). For example, the documented infection of Porphyra/Pyropia in Europe and Asia with the pathogenic oomycete Olpidiopsis (Kim et al. 2014; Badis et al. 2019; Ward et al. 2019) and outbreaks of the epiphytic pests Neosiphonia and Polysiphonia spp. in Kappaphycus seedlings are both attributed to trading as a pathway for pest introductions (Hurtado et al. 2019).
To minimize the introduction and spread of disease and pests, the “biosecurity” concept has played an increasingly important role in policy which supports a sustainable aquaculture sector (Bondad-Reantaso et al. 2005; Food Agriculture Organization 2007, 2018; Cottier-Cook et al. 2016; Campbell et al. 2019; Henríquez-Antipa and Carcamo 2019). Biosecurity is linked to many critical production sectors and under its classic definition by the United Nations Food and Agriculture Organization (FAO) is ‘a strategic and integrated approach for analyzing and managing relevant risks to human, animal and plant life and health, and associated risks to the environment’ (Food Agriculture Organization 2007). Biosecurity measures have been implemented in many aquaculture sectors and are particularly well-established in the food production sectors of countries including the UK, Australia, Canada, the USA and New Zealand and are used to facilitate international trade (Banks et al. 2012; Hine et al. 2012; Rodgers et al. 2015; Stentiford et al. 2017). The inclusion of biosecurity measures in policy and practice, particularly in the seaweed aquaculture industry which is generally concentrated in low to middle-income countries, has lagged behind other sectors, thus leaving the sector vulnerable to disease and pest outbreaks (Cottier-Cook et al. 2016; Henríquez-Antipa and Carcamo 2019). Biosecurity frameworks for the Indonesian aquaculture industry are currently being revised and this is reflected by the inclusion of Indonesia as a pilot country in an FAO program in 2019 to enhance biosecurity capacity in fish aquaculture by the Ministry of Marine Affairs and Fisheries (Ministry of Marine Affair and Fisheries (MMAF-KKP) 2019).
Given the current interest, globally and nationally, to enhance awareness and implementation of biosecurity measures, this work is the first evaluation of biosecurity content in Indonesia for the seaweed cultivation sector. Biosecurity content in policy and legislative frameworks is identified and quantitatively analysed, to indicate where deficiencies may exist which can be improved to strengthen the national biosecurity strategy for seaweed cultivation. Developing a national biosecurity strategy is an internationally recognized step to take to minimize the introduction and spread of disease and pests in the aquaculture industry. This analysis identifies specific policy recommendations intended to facilitate the development of a coherent biosecurity strategy in the seaweed industry of Indonesia. By building on this understanding, lateral integration of policy developments with the seaweed industry elsewhere will benefit the industry globally.
Selection of biosecurity frameworks
A number of policies, legislation and regulatory texts related to seaweed aquaculture, either through aquaculture (aquatic plant) or agriculture (plant product), were selected from a variety of sources including: the online government portal (jdih.kkp.go.id), published policy manuals and grey literature from government sources, independent institutions and NGOs. Collectively referred to as frameworks, their relevance to biosecurity was based on the scope of the policy or legislation including elements of the biosecurity principles outlined in the FAO Biosecurity tool kit (Food Agriculture Organization 2007). Where possible, current documents reviewed were published from 1990 to 2018, a period in which time seaweed cultivation became well-established in Indonesia.
Systematic analysis of biosecurity frameworks
The selected frameworks texts were assessed systematically using an adapted methodology from Dahlstrom et al. (2011). Categories of biosecurity themes and risks were identified within the texts and quantified to present detailed inclusion of biosecurity concepts in current frameworks. From this thematic analysis, key gaps were identified for further development of biosecurity content and coherence as part of the national biosecurity strategy for Indonesia.
There were five themes used to analyse the objectives of the frameworks and relevance to seaweed cultivation. The legal force of the framework was classed as either binding or non-binding. The terminology of seaweed inclusion in the framework was categorized as either seaweed explicit, not seaweed explicit, but with general inclusion under the wider terms of aquaculture and fisheries, and general food security for all production sectors. The biosecurity approaches taken in the framework were classed by the use of penalties, through preventative measures, detection measures, incentives and by response and recovery planning. The information sources used in each of the frameworks was categorized as scientific literature, selective expert opinion, stakeholder opinion, anecdotal reports and experiential evidence. Finally, the adoption of the precautionary principle was categorized as explicit in its use, not explicit but implied precautionary approach and no consideration given. The number of frameworks which fell under each theme and the proportion of those in each category were calculated to give a quantitative overview of the biosecurity frameworks in operation.
Seaweed aquaculture risk analysis
The impact of biosecurity risks associated with seaweed cultivation were identified in the texts of each framework and quantified to show the proportion of frameworks, which considered each of the risks. Risks were categorized under six main impact areas: direct impacts on the local environment, impacts on ecological interactions between the living organisms and their environment, impacts on the ecosystem processes, impacts on the economics of the farm system and on the social and cultural environment and the welfare of seaweed farm workers. The potential risks associated with disease and pests in each of the categories were then identified in each of the framework texts and quantified as a proportion of all possible texts.
National biosecurity strategy
Components of the national biosecurity strategies of Indonesia were identified based on their identification in the FAO “Biosecurity Toolkit” (Food Agriculture Organization 2007) and consisted of mechanisms/tools to regulate biosecurity nationally. A total of 16 components were cross-referenced in the selected frameworks to identify where their components were included in policy and legislative texts. The reference to each component in selected frameworks was quantified and the proportion of texts that included the component was calculated.
Eleven policy and legislation documents were selected as the biosecurity frameworks available for analysis. These documents included three national legislations/laws produced by the parliament/legislator, three government regulations that were issued by the President of the Republic of Indonesia and two ministerial regulations which were issued by the MMAF as the competent authority (CA) for aquaculture and fisheries in Indonesia. A description of each framework and their relevance to aspects of biosecurity in seaweed aquaculture is detailed in Table 1.
Thematic analysis found that the majority (73%) of biosecurity frameworks were legally binding (i.e. national legislation and government regulations) and the remaining 27% were non-binding (i.e. National Indonesian Standards, SNIs). Despite there being some non-binding frameworks, these texts made reference to appropriate national laws or regulations, which were enforced. Only three of the frameworks (27%) explicitly included the cultivation of seaweeds (i.e. Standar Nasional Indonesia No. 7672/2011, Standar Nasional Indonesia No. 7579/2010 and Standar Nasional Indonesia No. 2690/2015), while the three laws (i.e. Law No. 31/2004, Amendment Law No. 45/2009 and Law No. 16/1992) were non-specific. However, as national guidelines, the three SNIs provided a mechanism for accreditations regarding specific procedures during cultivation (e.g. seedling, planting to grow-out and post-harvest procedures). The majority of the frameworks implicitly included seaweeds, in combination with all other aquaculture activities (64%), and the rest of the frameworks included seaweeds, as part of the food production sector, under general food security (9%) (Table 2).
The use of penalties was an approach taken by three of the frameworks (27%), including the national fisheries law and amendment (Law No. 31/2004 and No. 45/2009) and the national quarantine law (Law No. 16/1992). All of the frameworks included general prevention as an approach to biosecurity, but the use of detection was only mentioned in 36% of the frameworks. Incentivization and response and recovery planning were not discussed as an approach. The inclusion of the precautionary principle was explicit in 55% of the frameworks examined, and the rest had no explicit mention of the principle. The information sources used in the frameworks were predominantly from anecdotal casual reports (55%), and scientific literature was used in 27% of the frameworks (i.e. Standar Nasional Indonesia 2010; Standar Nasional Indonesia 2011; Standar Nasional Indonesia 2015). The use of experiential evidence and both expert and stakeholder opinions were used in < 18% of the frameworks. Of all the frameworks, the SNI were the most robust in their use of information, from sources including scientific literature, expert and stakeholder opinions and experiential evidence, all in various combinations (Table 2; On-line Appendix 1).
Of the eight environmental risks that could be considered in the analysis, direct risks from pests and pathogens were listed in all of the reviewed frameworks, followed by risks from pest and pathogen vectors in 73% of the frameworks and risks to biodiversity in 55%. The risks of habitat loss or changes, as well as further decreases in already endangered species, were considered in only 27% of the frameworks (Table 3; On-line Appendix 2).
Others biosecurity risks considered under impacts on ecological interaction, economy and the seaweed industry, social and cultural aspects and the welfare of seaweed farmers were considered in fewer frameworks and inclusion of risks in these categories ranged from 9 to 36% (see Table 3). Risks considered under the ecosystem process category were not included in any of the analysed frameworks. In the ecological interaction category, risks associated with predation and hybridization were included in only 18% of the reviewed frameworks. In the economic and welfare categories, risks through trade losses, trade restrictions, tourism, shipping, other aquaculture activities, health care costs and food safety were not included in regulations regarding biosecurity (Table 3).
National biosecurity components
Components of the national biosecurity framework for Indonesia were identified in each of the frameworks (Table 4). This assessment identified that multiple authorities are currently involved in national biosecurity regulation. Specific components that were identified to have low inclusion across the frameworks (9 to 18%) included frameworks for inspecting and certifying aquaculture operations, disinfection procedures, phytosanitary measures, pathogen control, statutory contingency plans, stocking density and disease surveillance regulations (Table 4; On-line Appendix 3).
Some components were included in a much higher proportion of frameworks (55%), including those related to concerning introduction of new seaweed stocks and movement of various seaweed species between farms. The components regarding quarantine measures for importing aquatic organisms were not discussed in any of the frameworks. Despite the inclusion of many components, most were not included as regulatory tools (see in Table 4).
This study highlights the lack of legislation and policies which address biosecurity-related issues currently facing the seaweed industry in Indonesia. Specific gaps and deficiencies identified by this analysis are discussed below and recommendations are provided to address these gaps and to indicate where the existing frameworks may be strengthened or developed in the future.
Unspecific allocation of seaweed aquaculture in biosecurity frameworks
The biggest challenge for developing biosecurity capacity in the national strategy for the seaweed aquaculture sector is the generalization and grouping of the seaweed industry within the fisheries and aquatic animal industries frameworks. This makes implementation of biosecurity measures unclear, particularly regarding disease and pest management (Ward et al. 2019). Current legislation, regarding quarantine protocols and the maintenance of healthy aquaculture systems, was typically directed towards fish and other aquatic animals, despite it being assumed that this legislation also included seaweed cultivation. Many international regulations regarding biosecurity also combine seaweeds with fish and other aquatic animals, such as the FAO, Network of Aquaculture Centre in Asia-Pacific (NACA) and in the National Agro-Food Policy of Malaysia. This, however, compounds the problems of implementing biosecurity-related measures, as the cultivation systems, as well as the physiology of seaweeds are distinctly different to those of fish and other aquatic animals.
As autotrophs, seaweeds have an extractive energetic photosynthetic process, where inorganic nutrients are extracted from the water column (e.g. nitrogen and phosphorus). In comparison, cultivated fish and other aquatic animals generally produce waste nutrients (inorganic or organic) which, in excess, cause deterioration of the local marine environment (Troell et al. 1999; Chopin 2011; Granada et al. 2016; Kambey and Chung 2016). Therefore, the cultivation systems differ greatly as seaweeds do not require the input of commercial feeds which can also include additives such as probiotics, vaccines and other medicinal chemicals, which are regularly used to manage biosecurity risks (Supriyadi and Rukyani 2000; Burridge et al. 2010; Rico et al. 2012; Granada et al. 2016). In addition, the various types of cultivation systems used for seaweeds, such as hanging longlines and off-bottom culture for the red seaweeds Kappaphycus and Eucheuma (Standar Nasional Indonesia 2010; Hayashi et al. 2017), hanging rafts and nets for Saccharina, Gracilaria and Porphyra (Yang et al. 2015; Peteiro et al. 2016; Kim et al. 2017; Stevant et al. 2017) are also different to many other aquatic animal cultivation systems.
Cultivation of Kappaphycus and Eucheuma is also characterized by a short, single crop cycle of 35–45 days (Standar Nasional Indonesia 2010; Neish 2013), compared to many fish species which may take months to years (Hutapea et al. 2017; Suwirya and Giri 2018). Disease and pest outbreaks can, therefore, develop far more rapidly (Largo et al. 1995, 2017; Syafitri et al. 2017) compared with fish and aquatic animals (Flegel 2012; Brazenor and Hutson 2015). This example should be taken into account in quarantine measures where a 14-day quarantine period has been suggested as appropriate for seaweeds (Zemke-White and Smith 2006; Food Agriculture Organization 2007; Malaysian Standard 2012) compared with a recommended isolation period of 21 days or longer for fish (Whittington and Chong 2007; Hadfield and Clayton 2011; Becker et al. 2014). Based on these differences, amongst others, it is recommended that the management of seaweed cultivation systems should be considered separately to fish and other aquatic animals.
In addition to the physiological characteristics of seaweeds, another reason for the lack of inclusion of the seaweed industry in national policy and legislation is due to the perception that seaweed is a low-value component of the aquaculture and fisheries sector. For example, seaweed production in 2015 accounted for approximately 10.1 million tonnes fresh weight (FW) or 70% of the national aquaculture production compared with shrimp production at only 161,000 tonnes FW (Badan Pusat Statistik (BPS) 2017a; Food Agriculture Organization 2018; Food Agriculture Organization Fisheries and Aquaculture Information and Statistics Branch FAO-FIQIS 2019). However, the economic contribution of shrimp production to the national aquaculture sector reached 2.2 billion US$, while the value of seaweed was only 775 million US$ in 2015 (Badan Pusat Statistik (BPS) 2017a; California Environment Association 2018; Food Agriculture Organization 2018; Food Agriculture Organization Fisheries and Aquaculture Information and Statistics Branch FAO-FIQIS 2019). Seaweed production is, therefore, a relatively small contributor to the overall value of the combined aquaculture and fisheries sectors in Indonesia; however, they provide significant income to many rural farmers and their families (Food Agriculture Organization 2016; Badan Pusat Statistik (BPS) 2017a, b). The seaweed industry also supports regional economic resilience and improves the living standards for middle-income communities (Neish et al. 2017; Marino et al. 2019). Ecologically, seaweed farms can also provide ecosystem services, such as carbon capture, primary production and provision of additional habitats (Sondak et al. 2017; Hasselstrom et al. 2018; Froehlich et al. 2019). Therefore, the potential for growth in the seaweed industry has been recognized in a recent policy road map produced by MMAF through Ministerial Regulation 2015, which aimed to enhance cultivation and processing in 2014–2019. It is important, therefore, to adapt, specifically include or develop separate biosecurity frameworks in Indonesia to enable this industry to grow. In addition, it is essential to recognize that the implementation of aquatic animal management measures may be ineffective in the seaweed industry in limiting the occurrence of disease and pests.
Limited variety of biosecurity approaches
The current Indonesian biosecurity strategy predominantly takes a preventative approach to management measures for diseases or pests, such as invasive species. Although prevention is an important biosecurity component, using only this approach will not prevent all outbreaks. The preventative approach is found in frameworks, which include quarantine procedures for controlling diseases, as part of the health checking procedure required to transport seaweed across regions, along with fish and other aquatic animals (Law No. 16/1992 and PER No. 10/MEN/2012). The fact, national quarantine process does not include for life seaweed neither for national trading nor for importation because lack of appropriate facilities and no clear regulation for seaweed quarantine process (R. Mustafa, Fisheries Officer at Dinas Kelautan dan Perikanan DKP, personal communication). The regular monitoring of seedling health status, traceability and the maintenance of a clean farm environment are also additional preventative measures that could help control diseases, such as ‘ice-ice’ (Marino et al. 2019; Ward et al. 2019). These measures are regularly applied in other aquaculture systems (Rodgers et al. 2015; Jia et al. 2017; Stentiford et al. 2017). To date, seaweed farmers in Indonesia prevent disease and pest outbreaks on their farm using personal observational detection methods, unsupported by scientific knowledge or standardized guidelines (Marino et al. 2019).
Incentivization of biosecurity-related measures in seaweed aquaculture or any national aquaculture system was not discussed in any of the reviewed frameworks. An incentivized approach can motivate farmers to adopt improved farming practices (e.g. the Nutrient Trading Credit program by Chopin 2011), but this approach requires resources for which there may be limited capacity either in the governmental or industrial sectors. To date, funding aid from the national government through their subsidy program is a reliable and applicable incentives approach (e.g. subsidy for seedlings in MMAF No. 217/PER-DJB/2018). However, this program lacks regulatory control, which has led to unsuccessful implementation of this approach in many seaweed producing areas and has created a barrier for the further adoption of such an approach to decentralizing biosecurity management. Building awareness through appropriate penalties, and incentives or subsidized approaches, properly managed by either the national or regional competent authority therefore will be important in improving farming practices (Cottier-Cook et al. 2016; Jia et al. 2017; Henríquez-Antipa and Carcamo 2019). In addition, it may be possible to adopt the biosecurity program into a national biosecurity framework, which is internationally recognized, based on a country’s ability to trade a cultured product, which is free from specific diseases and pathogens (Hastein et al. 2008).
Detection of diseases through standardized diagnostic techniques such as histopathology and DNA markers can help with earlier identification of the symptoms of a microbial pathogen and aid in the understanding of factors, which cause disease outbreaks (Ward et al. 2019). Current detection measures in national biosecurity frameworks include some diagnostic techniques and provision of a notifiable list of wild, cultured and invasive fish pests and pathogens (PPRI No. 15/2002; MMAF-PER No. 10/MEN/2010). However, the application of such diagnostic techniques (included in national quarantine regulations) are only applicable to fish and other aquatic animals. A range of approaches is also recommended to promote implementation including background monitoring of endemic diseases and disease outbreak recovery plans to enforce the implementation (Payne et al. 2014; Loureiro et al. 2015; Cottier-Cook et al. 2016). Although there are many factors which influence what, when and how a pathogen can be detected, the industries which have invested heavily in detection have maintained profitable levels of production where disease had been a limitation (Thitamadee et al. 2016; Stentiford et al. 2017). Current frameworks were also found to be outdated (Law No. 16/1992 and Law No. 31/2004, 45/2009) and simple methods such as monitoring the health status of seaweed crop by an assigned competent authority is not undertaken as there is no clear regulation which requires it. Therefore, the occurrence of disease and pest outbreaks remains unmonitored and is unpredictable to manage. Integrating a variety of approaches to biosecurity in a national strategy will, therefore, enable the industry to be more resilient to environmental and societal changes and to implement more adaptive management strategies.
Limited scientific information in seaweed framework
Adopting evidence-based policies is viewed as necessary for developing the most up-to-date approaches to biosecurity (Scarfe 2003; Dahlstrom et al. 2011; Loureiro et al. 2015; Rodgers et al. 2015). Despite numerous studies on seaweed pests and diseases in Indonesia (Yulianto 2004; Fitrian 2015; Syafitri et al. 2017), most of the information used to inform biosecurity in national policy and legislation is from anecdotal reports. Only five of the 11 Indonesian frameworks assessed mentioned the use of scientific literature, experiential evidence and expert or stakeholder opinions, which are a critical requirement for building robust national regulations. As a consequence, relevant frameworks for the seaweed industry remain uninformed by scientific information regarding pests, diseases and appropriate biosecurity measures and are, therefore, based on a high level of uncertainty.
Limited guidance for the use of precautionary principle
Managing biosecurity in the face of emerging and unidentified pests and diseases requires a degree of precaution. The precautionary principle has become a key element for policy decisions concerning conservation management (Costa-Pierce and Page 2010; Sampaio et al. 2015). This concept is transferable to the sustainable management of aquaculture (Troell et al. 1999; Morton and Routledge 2016; Kirkpatrick et al. 2019). To be effective in biosecurity frameworks, precaution should be specific to what is being prevented and to the risk (Sampaio et al. 2015).
Various precautionary principles were found in almost all Indonesian biosecurity frameworks such as preventing disease outbreaks through import or transport of live aquatic animals (PER No. 10/MEN/2012, No. 15/MEN/2002), preventing the risk of introduction of invasive cultured species, which may impact the environment and native populations (Law No. 16/1992, PPRI No. 28/2017), and preventing the release of GMO’s into the environment, which may have an impact on the health of humans and animals (PPRI No. 21/2005). The precautionary approach should be supported by an evidence base from both scientific research and experiential evidence (Sampaio et al. 2015). Because there is insufficient scientific and experiential evidence information used in the biosecurity frameworks analysed, precaution was often unspecific. For example, the quarantine regulations of PER No. 15/MEN/2002 and 10/MEN/2012 aim to prevent the risk of diseases, but there are no protocols outlined for how this should be done and who is responsible as the competent authority. The decreasing of seaweed Kappaphycus and Eucheuma diversity and seedling quality in Indonesia become evidence for no farming precautionary approach; therefore, the spread of cultivated species through vegetative practices has been widely observed in seaweed growing regions (Halling et al. 2013), even though there was a possibility to improve the quality of disease resistance of seaweed cultured by domestication of wild Kappaphycus and Eucheuma species (Lim et al. 2013).
Although it is a well-known effective measure to integrate the precautionary principle into aquaculture through the risk assessment process (Sethi 2010; Morton and Routledge 2016), risks at the farm level still remain unclear because of a lack of evidence for risk identification and their consequences. Some production areas in Indonesia have reported declines in regional production (Badan Pusat Statistik (BPS) 2017a). For example, the Bengkulu Province saw a dramatic decrease in production per unit area of 99.59% in 2015 compared to 2011, and South Kalimantan, Bangka Belitung, Gorontalo and North Maluku also decreased by 80.1, 76.0, 58.8 and 36%, respectively. On the other hand, in the central productive areas of South Sulawesi and East Nusa Tenggara, production has increased more than 200%, although this is largely due to recent expansion of cultivation in these regions. At the same time, the Papua province saw an 84% decrease in production in 2014 and then an increase of about 80% through expansion of new cultivation areas the following year (BPS Statistics 2017a). This pattern of decreased production in areas where seaweed cultivation has been well-established and the increases in production by expanding into new areas under regulations which are lacking in precautionary measures risks further spread and establishment of diseases and pests. This type of expansion, combined with poor availability of healthy seedling/crops may have a significant impact on future national production.
Insufficient evidence of biosecurity hazards in seaweed aquaculture
In order to address the risks posed by diseases and pests in seaweed aquaculture, biosecurity frameworks should take into account evidence on the nature of their occurrence, in order to manage the risks. The risk from pests and disease are one of the most prominent natural environment risks found in the Indonesian fisheries and aquaculture frameworks analysed. However, the inclusion of the risk is often not supported with methods or protocols for assessing, managing and communicating the risk, as has been suggested for the aquaculture industry in order to improve biosecurity (Hewitt and Campbell 2008; Phillips and Subasinghe 2008; Campbell et al. 2019).
The risk with most detailed management measures was the movement of seaweed crops. This movement can transfer pests and diseases from one cultivation area to another and is also one of the most studied aspects of disease in seaweed aquaculture (Largo et al. 2017; Loureiro et al. 2017; Ingle et al. 2018; Ward et al. 2019). Evidence for this risk includes documented competition between Kappaphycus spp. and Eucheuma sp. with coral reefs in Hawaii and India (Sulu et al. 2004; Zemke-White and Smith 2006; Kamalakannan et al. 2014) and degradation of seagrass meadows resulting in decreased seagrass populations in Indonesia (Thomsen et al. 2012; Unsworth et al. 2018). Such evidence indicates that cultivated seaweed species can be highly competitive and opportunistic, with high growth rates and adaptability in tropical environments (Zuccarello et al. 2006; Conklin et al. 2009; Kamalakannan et al. 2014; Tano et al. 2015; Largo et al. 2017). The risk of introducing invasive species and of reducing genetic diversity through cultivation was included in fewer frameworks. Rather than following recommendations to develop a strong evidence base to manage pests and diseases and improve culture methods through specific studies on disease management (Bondad-Reantaso et al. 2005; Marino et al. 2019), policy efforts are also currently focused on expanding cultivation into new areas in Indonesia. Internationally, further research of disease and pest risks in seaweed cultivation is recommended (Halling et al. 2013; Lim et al. 2013; Payne et al. 2014; Dijkstra et al. 2017; Badis et al. 2019; Campbell et al. 2019; Campbell et al. 2019; Ward et al. 2019) and should be included in biosecurity frameworks to support the national biosecurity strategy (Cottier-Cook et al. 2016).
National biosecurity components
Given the lack of seaweed-specific biosecurity measures in policy and regulation in Indonesia, there is huge potential for biosecurity risks to be reduced in the seaweed industry through better management. However, current components of national biosecurity frameworks identified in this analysis show inconsistent use of the biosecurity concept. For instance, disease management was described separately as both pest control and cleaning (MMAF-KEP No. 02/MEN/2007; World Wide Fund for Nature 2014; Standar Nasional Indonesia 2016). The quarantine regulations lack any health monitoring procedures and management of invasive species for seaweeds, and there is no formal isolation time mentioned for seaweeds, unlike Malaysian national regulations that require 14-day isolation periods for cultivated seaweeds (Malaysian Standard No. 2467/2012). At present, crop health monitoring requirements are covered by Indonesian laws—No. 31/2004, 45/2009, and 16/1992—and require farmers to implement control measures for outbreaks of OIE World Organisation for Animal Health listed diseases, a list which does not include aquatic plants. Unlike other aquaculture sectors, seaweeds have only recently been adopted by the International Plant Protection Convention (IPPC), to manage and communicate biosecurity risks internationally (Campbell et al. 2019). The competent authority in Indonesia is the MMAF who are responsible for implementing biosecurity, which is included in many of their regulations concerning biosecurity and seaweed cultivation. The MMAF transfer their governmental powers to regional departments, in order to decentralize the regulation of fisheries and aquaculture, which has raised issues regarding effectiveness of this process (Neish 2013). Another potential limitation is the lack of capacity and political strength of the competent authority to develop and impose the regulations in an industry, which can be resistance to government intervention. Therefore, without a clear mandate for disease and pest monitoring, the development of this component to national biosecurity is hampered.
Even though almost all of the activities regarding seaweed aquaculture are conducted by the farmers, their involvement in developing biosecurity regulations appears limited. Farmers make management decisions based on their own valuable experience-based knowledge, but without consensus in farming areas, management measures can be inconsistent (Ritter et al. 2017; Jia et al. 2017; Marino et al. 2019). Therefore, farmers should be involved in any further development of biosecurity frameworks (Brugere et al. 2016). In return, farmers should be given access to knowledge on diseases and their causative agent (e.g. symptom identification and what might cause disease) and up-to-date information on the best measures to prevent and minimize the onset of a disease outbreak (e.g. systems for reportable/notifiable diseases and disease surveillance). Given the issues of miscommunication between national and regional governments, it is suggested that farmers may benefit from establishing groups (Nor et al. 2017), or utilizing associations (e.g. Indonesian Seaweed Association ARLI or ASTRULI), so they can communicate and share the information regarding cultivation challenges and receive updates on innovations and related actions to mitigate for disease and pest outbreaks (Neish 2013; Neish et al. 2017). In 2014, the World Wildlife Fund (WWF) took proactive action and published better management practices (BMP) together collaborated with local seaweed farmers in promoting sustainable fisheries and responsible aquaculture for supporting the SNI initiative (Nor et al. 2017). Collaborations between academia, government and industry to share information are also crucial to building biosecurity capacity amongst the Indonesian seaweed community.
Conclusions and recommendations
This analysis provides an overview of the current national biosecurity strategy regarding the seaweed industry of Indonesia. Given the significance of the industry to national aquaculture exports, policies to safeguard the industry from major losses to pests and disease are fragmented and often contradictory. With ongoing support from the central government to grow the seaweed industry of Indonesia and expand cultivation into new regions, improving existing frameworks will be key to sustaining the future growth of this industry. Based on this analysis, six key policy recommendations are provided to enhance national biosecurity frameworks for the seaweed industry:
Support further research to develop a strong evidence base, upon which national strategic decisions can be made on the management of the sector.
Establish seaweed-specific regulations and policies, providing appropriate management strategies that can be effectively enforced.
Establish a national database reporting what species of seaweeds are being produced and where any pest and disease outbreaks occur. This should be followed up with regular evaluation, so that the risks can be assessed by national government and each district, where possible.
Support for farmers to invest in the biosecurity management of seaweed cultivation systems including health monitoring equipment, training on management procedures, regional facilities for farmers to use for quarantine of seedlings or crop stock and surveillance systems.
Development of a risk assessment procedure for the expansion of farms into new and diseases-free areas.
Clarification on who the competent authority will be to regulate and support the seaweed industry.
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The authors would like to acknowledge Prof. Ik Kyo Chung (Pusan National University) and Indonesian Fisheries Officer DKP Gorontalo and BPBL Maros for sharing information regarding seaweed farming practices.
Funding Information This work was part of the GlobalSeaweedSTAR project supported by the Global Challenge Research Fund (GCRF) Biotechnology and Biological Sciences Research Council Grant 2007 No. BB/P027806/1 and No. IF015-2019.
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Kambey, C.S.B., Campbell, I., Sondak, C.F.A. et al. An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry. J Appl Phycol (2020). https://doi.org/10.1007/s10811-019-02020-3
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