11th ICRS Abstract book - Nova Southeastern University

11th ICRS Abstract book - Nova Southeastern University 11th ICRS Abstract book - Nova Southeastern University

24.12.2012 Views

Oral Mini-Symposium 20: Modeling Concepts and Processes on Coral Reefs 20-13 Foodwebs Of Coral Reef Seascapes Across The Bahamian Archipelago: Network Structure, Biodiversity, Robustness And The Effect Of Rugosity Steven LITVIN* 1 , Fiorenza MICHELI 1 , Jennifer DUNNE 2,3 , Peter MUMBY 4 1 Hopkins Marine Station, Stanford University, Pacific Grove, CA, 2 Santa Fe Institute, Santa Fe, NM, 3 Pacific Ecoinformatics and Computational Ecology Lab, Berkeley, 4 Marine Spatial Ecology Lab, University of Exeter, Exeter, United Kingdom Do changes in the diversity of fish assemblages across the Bahamian archipelago lead to significant variability in the structure of coral reef foodwebs and their associated properties? To address these questions we assembled empirical foodwebs for coral reef seascapes surveyed by the Bahamian Biocomplexity Project. This dataset incorporates over 160 species of reef fish censused throughout the archipelago at locations separated by scales of tens to hundreds of kilometers. Differences in foodweb structure associated with factors including the level of fishing pressure, extent of mangroves and the presence of an established marine protected area were determined using ecological network approaches. In addition to the direct comparison of measures of foodweb complexity we estimated the potential effect of species loss among coral reef foodwebs by simulating both the directed and random loss of species and then measuring robustness in terms of secondary extinctions. Further comparisons were carried out utilizing the niche model approach, based on the empirically observed variation in species diversity and connectance across the locations surveyed. To access the role of rugosity on foodweb structure we first calculated the probability individual fish species surveyed in hard bottom habitats were present within a given range of rugosity. Subsequently, foodwebs containing all species likely present within a rugosity range were assembled and the above mentioned network approaches applied. Together, these results provide insight into the drivers of foodweb structure in coral reef seascapes and the degree which perturbations, human induced and otherwise, are transmitted throughout fish communities. 20-14 Predicting Reef Futures Using A Multi-Scale Coral Reef Ecosystem Model Jessica MELBOURNE-THOMAS* 1 , Craig JOHNSON 1 , Tak FUNG 2 , Robert SEYMOUR 2 1 School of Zoology, University of Tasmania, Hobart, Australia, 2 CoMPLEX, University College London, London, United Kingdom Models can be effective tools to assess tradeoffs that arise in the exploitation and protection of coral reef systems. The importance of a regional-scale approach to modelling and management is clear, given that reefs are highly connected across regions by ocean currents, social structures, regional economies and global markets. However, there are few regional-scale coral reef models useful to stakeholders for decision support in management and policy development. We present a spatially explicit regional-scale model of a coral reef system which has been developed as a decision support tool. The model couples a fundamental, local-scale ecosystem-dynamic model to the regional scale by incorporating inter-reef connectivities for larvae, sediments and pollutants. Initial parameterisation is for the Meso-American Barrier Reef system (MBRS). Our approach is generic, so that the model can be transferred between global regions (e.g. Indo-Pacific, East Africa, and other areas in the Caribbean), with flexibility in parameterisation for differing data availabilities. Despite its conceptual simplicity, the regional model demonstrates complex, non-linear responses to external forcings that have important management implications. We will present examples of several important behaviours for the MBRS, and show how the model can be used to visualise and assess possible reef futures under alternative management scenarios. 20-15 One Fish, Two Fish, Red Fish, Blue Fish: The Use Of Simple Agent-Based Models And Role-Play Games To Communicate Key Messages To Community Groups Deborah CLELAND* 1 , Rollan GERONIMO 2 , Anne DRAY 3 , Pascal PEREZ 3 , Abigail TRINIDAD 4 1 Fenner School of Environment and Society, Australian National University, Canberra, Australia, 2 University of the Philippines, Manila, Philippines, 3 Australian National University, Canberra, Australia, 4 Foundation for the Alternative Management of the Environment, Manila, Philippines The principal anthropogenic factors driving reef degradation have been known for years, if not decades. Overfishing, sedimentation and nutrient loads are just some of the key impacts of human activities in and around reef communities. Therefore, the future of reefs does not rely on generating new knowledge, but rather on implementing and integrating the knowledge we already have. This will require creating effective links between researchers, managers and communities to promote mutual learning, negotiation and collaborative action for reef management. Combining agent-based models and role-play games, through a technique known as Companion Modelling (ComMod), creates a dynamic and interactive setting that can contribute to research, education and participatory goals across diverse stakeholders. Incorporating the decision-making processes of individuals into each time step, through the role-play game, means that socio-economic rationalities are seamlessly integrated with the biophysical dynamics embedded in the models. ComMod has been used successfully as a communication and learning tool in participatory workshops in both the Mesoamerican Reef (Mexico) and the Bolinao-Anda reef complex (Philippines). These experiences demonstrate that simple, generic ecological dynamics are very effective in communicating key conservation messages to a lay audience. However, a comprehensive understanding of local cultural, economic and social characteristics is crucial to develop a coupled model/role-play game that can successfully engage stakeholders. 20-16 Noaa Coral Reef Watch Experimental Coral Bleaching Forecast Tool Gang LIU* 1 , Ludmila E. MATROSOVA 2 , M. Cécile PENLAND 3 , Dwight K. GLEDHILL 1 , C. Mark EAKIN 4 , Robert S. WEBB 3 , Tyler R. L. CHRISTENSEN 1 , Scott F. HERON 4 , Jessica A. MORGAN 1 , William J. SKIRVING 4 , Alan E. STRONG 4 1 IMSG at NOAA Coral Reef Watch, Silver Spring, MD, 2 CIRES/NOAA Earth System Research Laboratory Physical Science Division, Boulder, CO, 3 NOAA Earth System Research Laboratory Physical Science Division, Boulder, CO, 4 NOAA Coral Reef Watch, Silver Spring, MD While NOAA Coral Reef Watch (CRW) near-real-time satellite monitoring of the thermal stress conducive to coral bleaching provides critical and timely information to coral reef managers and scientists, the outlook of potential thermal stress during the future months would be very useful for strategic planning and management. A new prediction tool is being developed by NOAA that seeks to provide a seasonal outlook of thermal stress conducive to coral bleaching. NOAA CRW has teamed up with the Physical Sciences Division of the NOAA Earth System Research Laboratory in developing thermal stress forecast model to provide coral bleaching HotSpot and Degree Heating Weeks forecasts ranging from two-weeks to seasons in advance. HotSpot and Degree Heating Weeks are two parameters that link the anomalously high sea surface temperature (SST) to the onset and intensity of mass coral bleaching and have been used successfully in providing near-real-time satellite bleaching monitoring. The SST forecast model is developed based on NOAA’s Linear Inverse Model (LIM) that has successfully produced predictions of tropical Pacific and Atlantic SST anomalies. This presentation will introduce this new tool developed for coral reef managers and scientists. 173

21-3 Recreational Fishers’ Perceptions Of The Costs And Benefits Of The 2004 Rezoning Of Australia’s Great Barrier Reef Marine Park Stephen SUTTON* 1 1 Fishing and Fisheries Research Centre, James Cook University, Townsville, Australia Recreational fishing is a popular use of Australia’s Great Barrier Reef Marine Park (GBRMP). In 2004, the Great Barrier Reef Marine Park Authority (GBRMPA) implemented a new zoning plan for the GBRMP that increased no-fishing zones within the Park from 5% to 33% of the total Park area. Anecdotal evidence suggested a high level of opposition towards the rezoning among recreational fishers before and after implementation of the new zoning plan. This study reports on a recent survey of 800 GBRMP recreational fishers that was aimed at understanding fishers’ perceptions of the costs and benefits of the 2004 zoning plan and the rezoning process. Results revealed that a majority (70%) of recreational fishers support the new zoning plan and believe it will enhance the sustainability of the Great Barrier Reef and the fisheries it supports. In general, the effects of the new zoning plan on recreational fishing activity appear to be less severe than fishers had expected with most fishers (73%) reporting that the rezoning has had little negative impact on their fishing activity. However, most fishers did not believe that the concerns of recreational fishers were adequately considered in the rezoning process, and trust in the GBRMPA among recreational fishers is low. Results suggest that opposition towards the zoning plan among recreational fishers is due to dissatisfaction with the rezoning and consultation processes rather than dissatisfaction with the outcomes of the new zoning plan. Support for marine protected areas and coral reef conservation among recreational fishers could be enhanced by developing more effective methods of engaging the recreational fishing community in the decision making process. 21-4 New Eco-Development Initiatives Involving Local People in The Conservation Of Coral Reefs in Mahatma Gandhi Marine National Park, Wandoor (India) Alok SAXENA 1 , Mani SAXENA* 2 1 Department of Environment & Forests, Government of India, Port Blair, India, 2 Biotechnology, Central Agriculture Research Institute, Port Blair, India Mahatma Gandhi Marine National Park situated at Wandoor about 29 km from Port Blair is among the first three Marine National Parks in India. It was established in 1983 with the objective of conserving the unique marine diversity particularly the coral reefs found in this area. There are 15 islands within MGMNP but there is no habitation inside the park area. There are 11 villages in the adjoining area having more than 1000 families. The main occupation is fishing. Though no rights are allowed within the Marine National Park but fishing routes are demarcated for providing safe passage to local fishermen. MGMNP is an important eco-tourist site because of its unique marine biodiversity and provides livelihood means to the people living around. In order to involve the local people in the conservation efforts, the Park authorities initiated action at a small level in 2003-04.Tsunami that struck these islands in 2004 affected not only tourism but also the efforts of Park authorities in people’s participation. However there has been a significant increase in tourist inflow to these islands in last two years and the park authorities have also recently revived their eco-development initiatives. In a series of meetings by the administration with local people, new initiatives are being taken for providing livelihood means to locals and involving them in the conservation efforts. The present study shows results based on surveys with local people and representatives of administration on the new initiatives, expectations of locals, their increasing awareness and changing attitude towards Park authorities. Oral Mini-Symposium 21: Social-ecological Systems 21-5 Global Study Of Management Effectiveness Of Marine Protected Areas Robert POMEROY 1 , Tammy CAMPSON* 2,3 1 Agricultural and Resource Economics, University of Connecticut, Avery Point, CT, 2 University of Connecticut, Simsbury, CT, 3 University of Connecticut, Storrs Marine Protected Areas have been established all over the world for the purposes of conservation, fisheries management, or both. While site-specific or regional studies on the management effectiveness of MPAs in meeting one or both of these objectives abound, there are relatively fewer studies that rigorously examine the simultaneous achievement of ecological, socioeconomic and/or governance objectives, and none that attempt to do so on a global scale. Moreover, no prior research has investigated the effects of the timing of management interventions and exogenous or discrete biophysical events on the effectiveness of Marine Protected Areas. This paper presents research results from a Global Management Effectiveness (GME) evaluation study of Marine Protected Areas. The main objectives of this study are to: 1) determine the socioeconomic, governance and ecological effects (outcomes and outputs) of MPAs; and 2)determine the critical factors (ecological, socioeconomic and governance) affecting MPA outcomes and outputs, as well as the impact of the timing of those factors on the outcomes and outputs of the MPA. The analysis integrates primary data derived from household surveys with extant ecological and control data. This paper will report the findings from the first round of GME study sites, including results from Asia, Africa, and the Caribbean. 21-8 Assessing Economic And Ecological Thresholds in Artisanal Reef Fisheries Louise TEH* 1 , Lydia TEH 1 , Ussif Rashid SUMAILA 1 1 Fisheries Centre, University of British Columbia, Vancouver, BC, Canada Conventional fisheries management approaches are generally considered to be inadequate for managing coral reef fisheries. As an alternative, we apply the resilience concept to examine ‘thresholds’ of a reef fishery system in order to identify areas where management can enhance socio-economic and ecological sustainability. We use the unmanaged artisanal reef fisheries of Pulau Banggi, Malaysia, as our case study. We find that reef fisheries resources have declined from the past, but have been maintained at a consistent level in the past 3 years. Fish catch composition and fishing effort have also remained stable, and fishing strategies are adapted to seasonal fluctuations. A significant economic perturbation – an increase in fuel price by 20 to 50% - did not cause any noticeable change in fishing behaviour after 11 months, suggesting that the reef fishery is still within economic profitability thresholds. On the other hand, this could also reflect that fishers have a low capacity to adapt due to lack of alternative livelihood options, and limited non-fishing skills and market access. The ecological system might be at a more precarious threshold due to intense fishing for the live reef fish trade, and increasing intrusion of purse seine vessels into artisanal fishing grounds. These pressures are likely to drive down ecological productivity and economic benefits from the fisheries in the future. However, fishers’ willingness and capacity to change this downward trajectory is impeded by their economic reliance on the live fish trade, and a general lack of community organization and an attitude of indifference to confront the purse seine fleet. Strategies to strengthen the resilience of Banggi’s reef fisheries can include: 1) diversifying economic options for fishers; and 2) developing community capacity and/or community-institutional partnerships to address wider scale pressures such as purse seine intrusions. 174

21-3<br />

Recreational Fishers’ Perceptions Of The Costs And Benefits Of The 2004 Rezoning<br />

Of Australia’s Great Barrier Reef Marine Park<br />

Stephen SUTTON* 1<br />

1 Fishing and Fisheries Research Centre, James Cook <strong>University</strong>, Townsville, Australia<br />

Recreational fishing is a popular use of Australia’s Great Barrier Reef Marine Park<br />

(GBRMP). In 2004, the Great Barrier Reef Marine Park Authority (GBRMPA)<br />

implemented a new zoning plan for the GBRMP that increased no-fishing zones within<br />

the Park from 5% to 33% of the total Park area. Anecdotal evidence suggested a high<br />

level of opposition towards the rezoning among recreational fishers before and after<br />

implementation of the new zoning plan. This study reports on a recent survey of 800<br />

GBRMP recreational fishers that was aimed at understanding fishers’ perceptions of the<br />

costs and benefits of the 2004 zoning plan and the rezoning process. Results revealed<br />

that a majority (70%) of recreational fishers support the new zoning plan and believe it<br />

will enhance the sustainability of the Great Barrier Reef and the fisheries it supports. In<br />

general, the effects of the new zoning plan on recreational fishing activity appear to be<br />

less severe than fishers had expected with most fishers (73%) reporting that the rezoning<br />

has had little negative impact on their fishing activity. However, most fishers did not<br />

believe that the concerns of recreational fishers were adequately considered in the<br />

rezoning process, and trust in the GBRMPA among recreational fishers is low. Results<br />

suggest that opposition towards the zoning plan among recreational fishers is due to<br />

dissatisfaction with the rezoning and consultation processes rather than dissatisfaction<br />

with the outcomes of the new zoning plan. Support for marine protected areas and coral<br />

reef conservation among recreational fishers could be enhanced by developing more<br />

effective methods of engaging the recreational fishing community in the decision making<br />

process.<br />

21-4<br />

New Eco-Development Initiatives Involving Local People in The Conservation Of<br />

Coral Reefs in Mahatma Gandhi Marine National Park, Wandoor (India)<br />

Alok SAXENA 1 , Mani SAXENA* 2<br />

1 Department of Environment & Forests, Government of India, Port Blair, India,<br />

2 Biotechnology, Central Agriculture Research Institute, Port Blair, India<br />

Mahatma Gandhi Marine National Park situated at Wandoor about 29 km from Port Blair<br />

is among the first three Marine National Parks in India. It was established in 1983 with<br />

the objective of conserving the unique marine diversity particularly the coral reefs found<br />

in this area. There are 15 islands within MGMNP but there is no habitation inside the<br />

park area. There are 11 villages in the adjoining area having more than 1000 families.<br />

The main occupation is fishing. Though no rights are allowed within the Marine National<br />

Park but fishing routes are demarcated for providing safe passage to local fishermen.<br />

MGMNP is an important eco-tourist site because of its unique marine biodiversity and<br />

provides livelihood means to the people living around. In order to involve the local<br />

people in the conservation efforts, the Park authorities initiated action at a small level in<br />

2003-04.Tsunami that struck these islands in 2004 affected not only tourism but also the<br />

efforts of Park authorities in people’s participation. However there has been a significant<br />

increase in tourist inflow to these islands in last two years and the park authorities have<br />

also recently revived their eco-development initiatives. In a series of meetings by the<br />

administration with local people, new initiatives are being taken for providing livelihood<br />

means to locals and involving them in the conservation efforts. The present study shows<br />

results based on surveys with local people and representatives of administration on the<br />

new initiatives, expectations of locals, their increasing awareness and changing attitude<br />

towards Park authorities.<br />

Oral Mini-Symposium 21: Social-ecological Systems<br />

21-5<br />

Global Study Of Management Effectiveness Of Marine Protected Areas<br />

Robert POMEROY 1 , Tammy CAMPSON* 2,3<br />

1 Agricultural and Resource Economics, <strong>University</strong> of Connecticut, Avery Point, CT,<br />

2 <strong>University</strong> of Connecticut, Simsbury, CT, 3 <strong>University</strong> of Connecticut, Storrs<br />

Marine Protected Areas have been established all over the world for the purposes of<br />

conservation, fisheries management, or both. While site-specific or regional studies on the<br />

management effectiveness of MPAs in meeting one or both of these objectives abound, there<br />

are relatively fewer studies that rigorously examine the simultaneous achievement of ecological,<br />

socioeconomic and/or governance objectives, and none that attempt to do so on a global scale.<br />

Moreover, no prior research has investigated the effects of the timing of management<br />

interventions and exogenous or discrete biophysical events on the effectiveness of Marine<br />

Protected Areas.<br />

This paper presents research results from a Global Management Effectiveness (GME)<br />

evaluation study of Marine Protected Areas. The main objectives of this study are to: 1)<br />

determine the socioeconomic, governance and ecological effects (outcomes and outputs) of<br />

MPAs; and 2)determine the critical factors (ecological, socioeconomic and governance)<br />

affecting MPA outcomes and outputs, as well as the impact of the timing of those factors on the<br />

outcomes and outputs of the MPA. The analysis integrates primary data derived from household<br />

surveys with extant ecological and control data. This paper will report the findings from the first<br />

round of GME study sites, including results from Asia, Africa, and the Caribbean.<br />

21-8<br />

Assessing Economic And Ecological Thresholds in Artisanal Reef Fisheries<br />

Louise TEH* 1 , Lydia TEH 1 , Ussif Rashid SUMAILA 1<br />

1 Fisheries Centre, <strong>University</strong> of British Columbia, Vancouver, BC, Canada<br />

Conventional fisheries management approaches are generally considered to be inadequate for<br />

managing coral reef fisheries. As an alternative, we apply the resilience concept to examine<br />

‘thresholds’ of a reef fishery system in order to identify areas where management can enhance<br />

socio-economic and ecological sustainability. We use the unmanaged artisanal reef fisheries of<br />

Pulau Banggi, Malaysia, as our case study. We find that reef fisheries resources have declined<br />

from the past, but have been maintained at a consistent level in the past 3 years. Fish catch<br />

composition and fishing effort have also remained stable, and fishing strategies are adapted to<br />

seasonal fluctuations. A significant economic perturbation – an increase in fuel price by 20 to<br />

50% - did not cause any noticeable change in fishing behaviour after 11 months, suggesting that<br />

the reef fishery is still within economic profitability thresholds. On the other hand, this could<br />

also reflect that fishers have a low capacity to adapt due to lack of alternative livelihood<br />

options, and limited non-fishing skills and market access. The ecological system might be at a<br />

more precarious threshold due to intense fishing for the live reef fish trade, and increasing<br />

intrusion of purse seine vessels into artisanal fishing grounds. These pressures are likely to<br />

drive down ecological productivity and economic benefits from the fisheries in the future.<br />

However, fishers’ willingness and capacity to change this downward trajectory is impeded by<br />

their economic reliance on the live fish trade, and a general lack of community organization and<br />

an attitude of indifference to confront the purse seine fleet. Strategies to strengthen the<br />

resilience of Banggi’s reef fisheries can include: 1) diversifying economic options for fishers;<br />

and 2) developing community capacity and/or community-institutional partnerships to address<br />

wider scale pressures such as purse seine intrusions.<br />

174

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