Implementation of multispecies ecological networks at the regional scale: analysis and multi-temporal assessment

Journal of Environmental Management, Journal Year: 2021, Volume and Issue: 289, P. 112494 - 112494

Published: April 3, 2021

Language: Английский

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Hydrodynamic provinces and oceanic connectivity from a transport network help designing marine reserves

Geophysical Research Letters, Journal Year: 2014, Volume and Issue: 41(8), P. 2883 - 2891

Published: April 1, 2014

Oceanic dispersal and connectivity have been identified as crucial factors for structuring marine populations designing Marine Protected Areas (MPAs). Focusing on larval by ocean currents, we propose an approach coupling Lagrangian transport new tools from Network Theory to characterize in the Mediterranean basin. Larvae of different pelagic durations seasons are modeled passive tracers advected a simulated oceanic surface flow which network connected areas is constructed. Hydrodynamical provinces extracted this delimited frontiers match multi-scale oceanographic features. By examining repeated occurrence such boundaries, identify spatial scales geographic structures that would control across entire seascape. Based these hydrodynamical units, study novel metrics existing reserves. Our results discussed context biogeography MPAs design, having ecological managerial implications.

Language: Английский

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Human effects on ecological connectivity in aquatic ecosystems: Integrating scientific approaches to support management and mitigation

The Science of The Total Environment, Journal Year: 2015, Volume and Issue: 534, P. 52 - 64

Published: April 26, 2015

Language: Английский

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Modelling dispersal and connectivity of broadcast spawning corals at the global scale

Global Ecology and Biogeography, Journal Year: 2013, Volume and Issue: 23(1), P. 1 - 11

Published: Aug. 11, 2013

Abstract Aim We develop the first global model of connectivity for a generic broadcast spawning coral, and compare results to estimates from genetic studies, general biogeographic patterns theories. also derive various ‘connectivity indices’ describing relative isolation source potential between locations. Location Modelled oceans 47° S –47° N . Methods Dispersal coral ‘larvae’ was simulated over 8 years using an individual‐based biophysical dispersal driven by 1/12°‐resolution surface ocean current data incorporating individual trait variability (e.g. phased pre‐competency period). Source arrival locations modelled larvae on suitable reef habitat gave standardized paths levels connectivity. Results In c 50% connections occurred within 50–100 km, with rarer regions linking entire in ‘stepping stone’ fashion. The central P acific almost complete barrier dispersal, only rarely breached westward G alapagos M arquesas I slands. Areas showing strong included H awaii, E aster sland, R ed ea eastern A tlantic. ndo‐ W est reat B arrier eef showed highest connectivity, secondary peaks western ndian O cean, corresponding areas enriched diversity. diversity hotspot overall greater than sink dispersal. Conclusions This study provides view that complements work as well providing number novel findings relevant theories source; J ohnston toll sole ‘stepping‐stone’ into awaii). Discrepancies proposed one‐way, westward, across acific) present hypotheses future research. represents effective tool exploring factors controlling this scale effects climate change will aid predictions distributions.

Language: Английский

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Transient windows for connectivity in a changing world

Movement Ecology, Journal Year: 2014, Volume and Issue: 2(1)

Published: Jan. 13, 2014

The primary focus of studies examining metapopulation processes in dynamic or disturbance-dependent landscapes has been related to spatiotemporal changes the habitat patches themselves. However, like patches, opportunities for movement between can also exist intermittently landscapes, creating transient connectivity windows – which we define as a period time during matrix conditions increase probability one more individuals moving successfully patches. Far less is known about implications per se, and, our knowledge, there are no metrics models that explicitly consider intermittent Consequently, this paper, examined peer-reviewed, published literature up November 2013 better understand consequences variability and highlight knowledge gaps on topic. First, describe how se vary along temporal gradient, offering examples ecological systems fall gradient. Second, examine important dynamics, particularly given likely alterations disturbance regimes result global change. We conclude review by briefly discussing key avenues future connectivity-related research, all hinge need perceive feature.

Language: Английский

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Quantifying the conservation value of seascape connectivity: a global synthesis

Global Ecology and Biogeography, Journal Year: 2015, Volume and Issue: 25(1), P. 3 - 15

Published: Oct. 18, 2015

Abstract Aim Connectivity structures populations, communities and ecosystems in the sea. The extent of connectivity is, therefore, predicted to also influence outcomes conservation initiatives, such as marine reserves. Here we review published evidence about how important seascape (i.e. landscape sea) is for outcomes. Location Global. Methods We analysed global literature on effects reserve performance. Results In majority cases, greater inside reserves translates into better enhanced productivity diversity). Research performance however, most often conducted separately from research connectivity, resulting few studies (< 5% all connectivity) that have quantified modifies assemblages or ecosystem functioning seascapes. Nevertheless, positive geographically widespread, encompassing Caribbean Sea, Florida Keys western Pacific Ocean. Main conclusions Given rarely connects reserves, our thesis stronger linkages between ecology spatial planning are likely improve key science challenge identify full range ecological functions modulated by scale over which these enhance

Language: Английский

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Connectivity and complex systems: learning from a multi-disciplinary perspective

Applied Network Science, Journal Year: 2018, Volume and Issue: 3(1)

Published: June 18, 2018

In recent years, parallel developments in disparate disciplines have focused on what has come to be termed connectivity; a concept used understanding and describing complex systems. Conceptualisations operationalisations of connectivity evolved largely within their disciplinary boundaries, yet similarities this its application among are evident. However, any implementation the carries with it both ontological epistemological constraints, which leads us ask if there is one type or set approach(es) that might applied all disciplines. review we explore four challenges using understand systems from standpoint widely different These are: (i) defining fundamental unit for study (ii) separating structural functional (iii) emergent behaviour; (iv) measuring connectivity. We draw upon discipline-specific insights Computational Neuroscience, Ecology, Geomorphology, Social Network Science Systems Biology use these evaluate how connectivity-based approach generated new structural-functional relationships characterise propose 'common toolbox' underpinned by network-based approaches can advance studies overcoming existing constraints.

Language: Английский

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Navigating the currents of seascape genomics: how spatial analyses can augment population genomic studies

Current Zoology, Journal Year: 2016, Volume and Issue: 62(6), P. 581 - 601

Published: July 6, 2016

Population genomic approaches are making rapid inroads in the study of non-model organisms, including marine taxa. To date, these studies have predominantly focused on rudimentary metrics describing spatial and environmental context their region (e.g., geographical distance, average sea surface temperature, salinity). We contend that a more nuanced considered approach to quantifying seascape dynamics patterns can strengthen population investigations help identify spatial, temporal, factors associated with differing selective regimes or demographic histories. Nevertheless, for landscapes complicated. Characteristic features environment, pelagic living flowing water (experienced by most taxa at some point life cycle), require well-designed spatial-temporal sampling strategy analysis. Many genetic summary statistics used describe populations may be inappropriate species large sizes, ranges, stochastic recruitment, asymmetrical gene flow. Finally, statistical testing associations between seascapes still maturing no single able capture all relevant considerations. None issues completely unique systems therefore similar solutions will shared many organisms regardless habitat. Here, we outline goals landscape genomics an emphasis review growing empirical literature genomics. established tools highlight promising new strategies overcome select spatially optimize sampling. Despite challenges, argue especially well suited identifying candidate regions under environmentally mediated selection useful robust locus-by-environment associations.

Language: Английский

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Identifying the key biophysical drivers, connectivity outcomes, and metapopulation consequences of larval dispersal in the sea

Movement Ecology, Journal Year: 2015, Volume and Issue: 3(1)

Published: May 29, 2015

Population connectivity, which is essential for the persistence of benthic marine metapopulations, depends on how life history traits and environment interact to influence larval production, dispersal survival. Although we have made significant advances in our understanding spatial temporal dynamics these individual processes, developing an approach that integrates entire population connectivity process from reproduction, through dispersal, recruitment individuals has been difficult. We present a modelling framework diagnostic quantifying impact i) histories, ii) demographics, iii) iv) physical seascape, structure metapopulation dynamics. illustrate this using subtidal rocky reef ecosystem Port Phillip Bay, were provide broadly-applicable quantitative methodology evaluating relative importance factors determining local system outcomes.The characteristics are primarily influenced by mortality, duration pelagic stage, settlement competency characteristics, with variability imposed geographic setting timing release. The direction strength main effects strongly consistent among 10 connectivity-based metrics.These important intrinsic (mortality, length extent precompetency window) represent key research priorities advancing outcomes.

Language: Английский

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Integrating multiple species connectivity and habitat quality into conservation planning for coral reefs

Ecography, Journal Year: 2015, Volume and Issue: 39(7), P. 649 - 664

Published: Aug. 8, 2015

Incorporating connectivity into the design of marine protected areas (MPAs) has met with conceptual, theoretical, and practical challenges, which include: 1) need to consider for multiple species different dispersal abilities, 2) role played by variable habitat quality in determining spatial patterns connectivity. We propose an innovative approach, combining biophysical modeling a routinely‐used tool marine‐reserve (Marxan), address both challenges using ecologically‐informed parameters. showed how functional demographic four candidate reef‐associated varying abilities suite metrics weighted can be used set conservation objectives inform MPA placement. Overall, strength barriers varied across modeled and, also species, we found lack concordance reefs that were high‐quality sources, self‐persistent, stepping‐stones. Including spatially‐heterogeneous made considerable difference patterns, significantly reducing potential reproductive output from many reefs. caution is needed data multi‐species matrices, do not perform reliably as surrogates all individual species. then restricting available inequitable impact on greatest betweenness centrality long‐distance dispersers. Brazilian coral case study but our approach applicable terrestrial planning, offers holistic way functionally‐connected reserves tackle complex issues relevant planning persistence.

Language: Английский

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