A Metapopulation Approach to Interpreting Diversity at Deep-Sea Hydrothermal Vents

Neubert, Michael G.; Mullineaux, Lauren S.; Hill, M. Forrest

doi:10.1016/b978-012088781-1/50012-1

Cited by 15 publications

(14 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is rapidly becoming a key tool for developing science-based societal solutions to managing fisheries (Guichard et al, 2004), protecting vulnerable ecosystems, and predicting how effects of point-source human disturbance (e.g., mining, pollution) propagate regionally. For hydrothermal vent systems, however, metapopulation and metacommunity theory remains largely unused (but see Jollivet et al, 1999;Neubert et al, 2006).…”

Section: Metacommunity Framework As a Multiscale Approach To Vent Dynmentioning

confidence: 99%

“…To simplify, theoreticians often limit the number of species in their model metacommunities and limit the number of interactions between species by making strong biological assumptions. For example, to capture successional dynamics (the change in species structure over time), Neubert et al (2006) specified a strict hierarchy wherein species with higher ranks could only colonize patches that were previously colonized by species lower in the hierarchy. Alternatives to the facilitation model of succession are the tolerance model (wherein any species can colonize available habitat first) or the inhibition model (wherein early colonizers modify the environment to preclude later colonizers; Connell and Slatyer, 1977).…”

Section: Metacommunity Theorymentioning

confidence: 99%

See 1 more Smart Citation

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

et al. 2018

Self Cite

View full text Add to dashboard Cite

Species inhabiting deep-sea hydrothermal vents are strongly influenced by the geological setting, as it provides the chemical-rich fluids supporting the food web, creates the patchwork of seafloor habitat, and generates catastrophic disturbances that can eradicate entire communities. The patches of vent habitat host a network of communities (a metacommunity) connected by dispersal of planktonic larvae. The dynamics of the metacommunity are influenced not only by birth rates, death rates and interactions of populations at the local site, but also by regional influences on dispersal from different sites. The connections to other communities provide a mechanism for dynamics at a local site to affect features of the regional biota. In this paper, we explore the challenges and potential benefits of applying metacommunity theory to vent communities, with a particular focus on effects of disturbance. We synthesize field observations to inform models and identify data gaps that need to be addressed to answer key questions including: (1) what is the influence of the magnitude and rate of disturbance on ecological attributes, such as time to extinction or resilience in a metacommunity; (2) what interactions between local and regional processes control species diversity, and (3) which communities are "hot spots" of key ecological significance. We conclude by assessing our ability to evaluate resilience of vent metacommunities to human disturbance (e.g., deep-sea mining). Although the resilience of a few highly disturbed vent systems in the eastern Pacific has been quantified, these values cannot be generalized to remote locales in the western Pacific or mid Atlantic where disturbance rates are different and information on local controls is missing.

show abstract

Section: Metacommunity Framework As a Multiscale Approach To Vent Dynmentioning

confidence: 99%

Section: Metacommunity Theorymentioning

confidence: 99%

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such models are commonly used in community assembly studies (e.g., Weiher and Keddy 1995;Neubert et al 2006). In the facilitation model we assume that species may only colonize patches already inhabited by a facilitating species.…”

Section: Patch Occupancy Frameworkmentioning

confidence: 99%

Optimal bioeconomic management of changing marine resources

Moberg¹

2016

View full text Add to dashboard Cite

Marine populations are increasingly subjected to changing conditions whether through harvest or through broad-scale habitat change. Historically, few models have accounted for such trends over time, and even fewer have been used to study how trends affect optimal harvests.I developed and analyzed several models that explore, first, endogenous change caused by harvest and, second, exogenous change from factors (such as rising ocean temperatures) outside harvesters' control. In these models, I characterized the profit-or yield-maximizing strategy when harvesting damages habitat in a multispecies fishery, when harvest creates a selective pressure on dispersal, and when rising temperatures cause changes in vital rates. I explore this last case in both deterministic and stochastic environments, and also allow the harvester to learn about unknown parameters of the stock recruitment model while harvesting. I also develop an unambiguous definition of and describe a statistical test for a shift in a species' spatial distribution.

show abstract

“…In turn, quantifying the effect of larval survival and rates of dispersal on population growth will ultimately enable the use of more complex models that link dispersal and demography of hydrothermal vent species (e.g. Neubert & Caswell 2000, Neubert et al 2006. While our basic model forecasted population size using exponential growth, including the effects of density-dependent survival and growth into the settler stage generated more realistic population trajectories for Lepetodrilus fucensis, with intermediate and fast individual growth rates causing convergence and oscillations in λ over time, respectively.…”

Section: Theoretical Population Projectionsmentioning

confidence: 99%

“…Neubert & Caswell 2000) or metapopulation models (e.g. Neubert et al 2006) that can link demographic data and dispersal.…”

Section: Future Applicationsmentioning

confidence: 99%

Understanding population dynamics of a numerically dominant species at hydrothermal vents: a matrix modeling approach

Kelly

Meta×as²

2010

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Using a stage-based matrix model, we explored the population dynamics and lifehistory traits of the numerically dominant deep-sea limpet Lepetodrilus fucensis at hydrothermal vents on the Juan de Fuca Ridge, northeast Pacific, to determine the potential mechanisms for the success of this species in an ephemeral and variable ecosystem. The life-history traits of L. fucensis differed from those generally expected for species in fluctuating and unpredictable habitats, in that variation in survival of recruits had the largest effect on population growth, while perturbations in adult survival or fecundity had little influence. However, rapid individual growth rates were also necessary to achieve long-term population growth. The modeled stable stage distribution adequately represented the dynamics of settler and recruit stages, but did not match those of adult stages, in populations sampled from 3 different sites. This suggests that factors not accounted for within the model, such as changing individual behaviour across life stages in response to environmental stimuli, may be important in shaping the structure of L. fucensis populations in different microhabitats. In numerical experiments, density-dependent survival and growth of settlers resulted in fluctuations in population growth rate and suppressed total population size over time. Reproductive failure due to parasitic infection decreased local recruitment, but did not result in population extinction. Faster growth rates allowed for population persistence under greater levels of chronic disturbance. Recovery time after a catastrophic disturbance fit within the time frames observed for eruptions in nature. Overall, our analyses emphasize the possible variation in life-history tactics exhibited by organisms in extreme and variable habitats, and demonstrate the high potential of models, originally developed for use in other ecosystems, to accelerate research in deep-sea communities.

show abstract

A Metapopulation Approach to Interpreting Diversity at Deep-Sea Hydrothermal Vents

Cited by 15 publications

References 52 publications

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

Optimal bioeconomic management of changing marine resources

Understanding population dynamics of a numerically dominant species at hydrothermal vents: a matrix modeling approach

Contact Info

Product

Resources

About