Science, biodiversity and Australian management of marine ecosystems

The United Nations Convention on Law of the Sea (UNCLOS) (United Nations 1982) came into effect in 1994. Signatory nations have substantial management obligations for conservation of marine natural resource and ecosystems. In this paper we discuss the challenges of defining and monitoring biodiversity at scales required for management of marine ecosystems. Australia\u27s area of immediate responsibility under UNCLOS covers an area of 11 million sq km with further linked responsibilities for an estimated area of 5.1 million sq km of continental shelf. This presents substantial data challenges for development and implementation of management. Acoustic seabed mapping is providing substantial information on seabed surface geology and topography and provides a surrogate basis for describing benthic habitat and seabed communities that have critical roles in marine food chains. The development of the Integrated Marine and Coastal Regionalisation of Australia (IMCRA 4.0, 2006) has provided a basis for planning marine biodiversity and resource management but the biological habitat interpretation of geological data is based very largely on demersal fish data. It is recognised in IMCRA 4.0 (2006) that revision and refinement of regionalisation requires further work in the areas of data coverage, ecosystem understanding and ecosystem surrogates and conceptual classification models. In this paper we discuss Australian experience highlighting problems and issues of relevance for scientifically based management of marine natural resource and ecosystems elsewhere in the world

Four Regional Marine Biodiversity Studies: Approaches and Contributions to Ecosystem-Based Management

We compare objectives and approaches of four regional studies of marine biodiversity: Gulf of Maine Area Census of Marine Life, Baltic Sea History of Marine Animal Populations, Great Barrier Reef Seabed Biodiversity Project, and Gulf of Mexico Biodiversity Project. Each program was designed as an "ecosystem" scale but was created independently and executed differently. Each lasted 8 to 10 years, including several years to refine program objectives, raise funding, and develop research networks. All resulted in improved baseline data and in new, or revised, data systems. Each contributed to the creation or evolution of interdisciplinary teams, and to regional, national, or international science-management linkages. To date, there have been differing extents of delivery and use of scientific information to and by management, with greatest integration by the program designed around specific management questions. We evaluate each research program's relative emphasis on three principal elements of biodiversity organization: composition, structure, and function. This approach is used to analyze existing ecosystem-wide biodiversity knowledge and to assess what is known and where gaps exist. In all four of these systems and studies, there is a relative paucity of investigation on functional elements of biodiversity, when compared with compositional and structural elements. This is symptomatic of the current state of the science. Substantial investment in understanding one or more biodiversity element(s) will allow issues to be addressed in a timely and more integrative fashion. Evaluating research needs and possible approaches across specific elements of biodiversity organization can facilitate planning of future studies and lead to more effective communication between scientists, managers, and stakeholders. Building a general approach that captures how various studies have focused on different biodiversity elements can also contribute to meta-analyses of worldwide experience in scientific research to support ecosystem-based management

Science and the management of coral reefs

Increasing accessibility of coral reefs from the latter third of the 20th century led quickly to recognition of the vulnerability of coral reef communities to a combination of direct and indirect human impacts. Coral reefs are confronted by the stark threats of climate and ocean changes from the increasing number, intensity and forms of human use impacting global and marine systems. Management, particularly of accessible coral reefs, occurs in the context of multiple scale transboundary water column linkages of lifecycle processes and increasing human use of coastal and marine space. Four decades of experience have demonstrated the combined importance of biophysical and socio-economic sciences and sharing knowledge with communities for developing implementing effective management. In the face of environmental and socio-economic change the challenge for science and management is to develop knowledge and management responses that can better understand and increase resilience to improve he outlook for coral reef communities

Maintaining coastal and lagoonal ecosystems and productivity

The shallow ecosystems and productivity of mangroves, seagrass beds, coral reefs and inter-reef seabed are critical natural assets for food production, food security, cultural and recreational activities and livelihoods for many people in Pacific Island States. They also provide important ecosystem services in protection of coasts against storm surges and in production of carbonate sands and debris to nourish beaches and maintain islands. These ecosystems are easily damaged through reclamation, drainage, pollution and destruction of critical habitats for fish and other food species. Once destroyed, these ecosystems are not readily or cheaply restored or replaced. The paper discusses issues that should be addressed through an integrated process of strategic planning and design to ensure proper consideration of environmental, social and economic impacts in any proposal for island protection works

Some Implications of High Biodiversity for Management of Tropical Marine Ecosystems-An Australian Perspective

While high biodiversity has been widely reported from the tropics, we suggest that in reality there is a considerable underestimate of the total biodiversity. We have concentrated on the tropical regions of Australia and the Coral Triangle. The best known groups are the corals, fish, and commercially important invertebrates. In considering whether this is true, we have concentrated on the diversity of benthic communities and water column communities which are poorly known. Yet at the bottom of the food chain these communities are highly dynamic and susceptible to the anthropogenic changes that are occurring with the rapid development in this highly populated region. Tropical biodiversity is under increasing stress from a synergistic combination of changes in climate, oceanographic regimes, increasing coastal development, overfishing, and poor water quality, resulting in bleaching of corals and loss of habitat and of associated fauna. These changes on reefs have received substantial research attention; in comparison, there is limited data on inter-reefal areas and water column communities and limited understanding of the ecological interconnectivity of all these habitats. While in this region there is growing marine protected area coverage, the major focus is on coral reefs with other habitats based on surrogacy with little if any ground-truthing. Within this region, there is limited capacity or inclination to rectify this lack of knowledge of the structure and ecology of the broader non-commercial benthic and pelagic communities. We suggest this lack of knowledge and limited expertise may be widespread throughout the tropics and compromises our ability to understand and predict the changes that are occurring with increasing anthropogenic impacts on these tropical ecosystems

Zoning, a fundamental cornerstone of effective Marine Spatial Planning: lessons learnt from the Great Barrier Reef, Australia

The Great Barrier Reef Marine Park was established to provide for conservation and ecologically sustainable multiple use of 344,400 km2 of a large marine ecosystem. Management is based on multiple use, with zoning as a fundamental component of marine spatial planning. The legislative framework, including a specific Act and Regulations, address the objectives of ecosystembased, integrated management of human uses and impacts consistent with best contemporary understanding of biological diversity. Zoning is one of a suite of management tools that include other spatial and temporal management tools and non-spatial measures including public education, community engagement, codes of environmental best practice, industry partnerships and economic instruments. The first section of the Great Barrier Reef Marine Park came into operation in 1981 and the most recent zoning came into operation in mid 2004. The paper discusses some common misunderstandings about zoning and identifies lessons that appear relevant for others addressing management and use of marine ecosystems and natural resources

Uncertain seas ahead: legal and policy approaches to conserving marine biodiversity in the face of changing climate

Climate is a major factor in the habitat, food chains, competition, success and survival of species. Contemporary distributions and abundance of marine species and communities reflect adaptation to geologically recent climatic conditions and the impacts of human activities. Warming of the atmosphere and seawater has occurred in association with increasing levels of atmospheric carbon dioxide since the start of the twentieth century. Despite continuing scientific research and wider discussion of the relative roles of anthropogenic greenhouse gas increases and other influences on climate, climate change is occurring. The policy and legal issues have two core components: response to the effects of climate change, and addressing the human activities for which there is reasonable evidence of causation or exacerbation of climate change. For the purpose of this chapter, the focus will be on the response to the effects of climate change, rather than on the issue of anthropogenic causation and exacerbation

Strategic roles of marine protected areas in ecosystem scale conservation

Responses by management to an increasing range of human uses and impacts on marine ecosystems are a recent phenomenon. They are developing alongside traditional sectoral management of fisheries. shipping. and coastal land uses. Many regimes have been developed for approaching the tasks of integrating management of coastal and marine ecosystems. The role of marine protected areas and conservation agencies in such regimes is often a matter of contention, The application of International Union for the Conservation of Nature (IUCN) protected-area categories to marine ecosystems can cover the broadest range of management regimes. from strict nature reserves with no fishing or collecting to multiple. verifiably environmentally sustainable. levels of use and impact. Here. I address the roles that protected areas and other management categories can play in relation to the multiple scales and strategic objectives for management of marine ecosystems. I draw on experiences of planning. management. and community response to the Great Barrier Reef Marine Park to discuss the opportunities and challenges of using protec ted-area categories and other strategies in management for conservation and reasonable multiple use at the ecosystem scale

Synthesis for discussion

The objective of the seminar was to provide a forum for multi-sectoral presentation and discussion of issues relating to information, governance, science and management of human activities affecting the marine environment and resources. These matters are more often addressed within sectors, between individual sectors and government so the panel and general discussion sessions covered a broad range of issues from the broader multi-sectoral context of governance, rights and responsibilities to further specific consideration of sectoral and research initiatives to address environmental and natural resource uses and impacts. The interest of the participants and their discussion at the workshop reflected limitations in knowledge of the governance constraints and the biophysical nature of marine systems; of each others objectives, operational opportunities and constraints; of common interests; shared concerns; and opportunities to develop effective management system