Browsing Bergen Open Research Archive by Author "Mangel, Marc"
Now showing items 1-20 of 20
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A benefit–risk analysis for biological control introductions based on the protection of native biodiversity
Heimpel, George E.; Abram, Paul K.; Causton, Charlotte E.; Celis, Sabrina L.; Coll, Moshe; Hardy, Ian C. W.; Mangel, Marc; Mills, Nicholas J.; Segoli, Michal (Journal article; Peer reviewed, 2024)The release of biological control agents has been an important means of controlling invasive species for over 150 years. While these releases have led to the sustainable control of over 250 invasive pest and weed species ... -
Compensatory Development and Costs of Plasticity: Larval Responses to Desiccated Conspecifics
Sadeh, Asaf; Truskanov, Noa; Mangel, Marc; Blaustein, Leon (Peer reviewed; Journal article, 2011-01-05)Understanding constraints on phenotypic plasticity is central to explaining its evolution and the evolution of phenotypes in general, yet there is an ongoing debate on the classification and relationships among types of ... -
Decision-making from the animal perspective: Bridging ecology and subjective cognition
Budaev, Sergei; Jørgensen, Christian; Mangel, Marc; Eliassen, Sigrunn; Giske, Jarl (Journal article; Peer reviewed, 2019-05-14)Organisms have evolved to trade priorities across various needs, such as growth, survival, and reproduction. In naturally complex environments this incurs high computational costs. Models exist for several types of decisions, ... -
Density-independent mortality at early life stages increases the probability of overlooking an underlying stock-recruitment relationship
Zimmermann, Fabian; Enberg, Katja; Mangel, Marc (Journal article; Peer reviewed, 2021)Abstract Beverton and Holt’s (1957) monograph contributed a widely used stock–recruitment relationship (BH-SRR) to fisheries science. However, because of variation around a presumed relationship between spawning biomass ... -
Determining individual variation in growth and its implication for life-history and population processes using the Empirical Bayes method
Vincenzi, Simone; Mangel, Marc; Crivelli, Alain J.; Munch, Stephan; Skaug, Hans J. (Peer reviewed; Journal article, 2014-09-11)The differences in demographic and life-history processes between organisms living in the same population have important consequences for ecological and evolutionary dynamics. Modern statistical and computational methods ... -
Effects of time spent in pregnancy or brooding on immunocompetence
Revathi Venkateswaran, Vandana; Gokhale, Chaitanya S.; Mangel, Marc; Eliassen, Sigrunn (Journal article; Peer reviewed, 2024)Sexes of a species may show different characteristics beyond the differences in their sexual organs and such sexual dimorphism often occurs in the level of immune response when exposed to pathogens (immunocompetence). In ... -
The emotion system promotes diversity and evolvability
Giske, Jarl; Eliassen, Sigrunn; Fiksen, Øyvind; Jakobsen, Per Johan; Aksnes, Dag Lorents; Mangel, Marc; Jørgensen, Christian (Peer reviewed; Journal article, 2014-08-06)Studies on the relationship between the optimal phenotype and its environment have had limited focus on genotype-to-phenotype pathways and their evolutionary consequences. Here, we study how multi-layered trait architecture ... -
Global reconstruction of life-history strategies: A case study using tunas
Horswill, Cat; Kindsvater, Holly K.; Juan-Jordá, Maria-José; Dulvy, Nicholas K; Mangel, Marc; Matthiopoulos, Jason (Peer reviewed; Journal article, 2019)1. Measuring the demographic parameters of exploited populations is central to predicting their vulnerability and extinction risk. However, current rates of population decline and species loss greatly outpace our ability ... -
Gray whale habitat use and reproductive success during seismic surveys near their feeding grounds: comparing state-dependent life history models and field data
Schwarz, Lisa; McHuron, Elizabeth; Mangel, Marc; Gailey, Glenn; Sychenko, Olga (Journal article; Peer reviewed, 2022)We used a stochastic dynamic programming (SDP) model to quantify the consequences of disturbance on pregnant western gray whales during one foraging season. The SDP model has a firm basis in bioenergetics, but detailed ... -
Modeling Coupled Nonlinear Multilayered Dynamics: Cyber Attack and Disruption of an Electric Grid
Mangel, Marc; McEver, Jimmie (Journal article; Peer reviewed, 2021)We study the consequences of cyberattack, defense, and recovery in systems for which a physical system is enabled by a cyber system by extending previous applications of models from the population biology of disease to the ... -
Modelling and interpreting fish bioenergetics: a role for behaviour, life-history traits and survival trade-offs
Jørgensen, Christian; Enberg, Katja; Mangel, Marc (Peer reviewed; Journal article, 2016-01)Bioenergetics is used as the mechanistic foundation of many models of fishes. As the context of a model gradually extends beyond pure bioenergetics to include behaviour, life-history traits and function and performance of ... -
Operational analysis for COVID-19 testing: Determining the risk from asymptomatic infections
Mangel, Marc (Journal article; Peer reviewed, 2023)Testing remains a key tool for managing health care and making health policy during the coronavirus pandemic, and it will probably be important in future pandemics. Because of false negative and false positive tests, the ... -
Parent-offspring conflict over reproductive timing: ecological dynamics far away and at other times may explain spawning variability in Pacific herring
Ljungström, Anna Jeja Gabriella; Francis, Tessa; Mangel, Marc; Jørgensen, Christian (Peer reviewed; Journal article, 2019)Timing of reproduction may be of crucial importance for fitness, particularly in environments that vary seasonally in food availability or predation risk. However, for animals with spatially separated feeding and breeding ... -
Pest science in Pasteur’s Quadrant
Mangel, Marc (Journal article; Peer reviewed, 2023)More than 25 years ago, Donald Stokes argued that we must move beyond the false dichotomy of basic or applied research and suggested that when considering a program of scientific research it is important to ask whether (i) ... -
Population processes in cyber system variability
Mangel, Marc; Brown, Alan (Journal article; Peer reviewed, 2022)Variability is inherent to cyber systems. Here, we introduce ideas from stochastic population biology to describe the properties of two broad kinds of cyber systems. First, we assume that each of N0 components can be in ... -
Propensity for risk in reproductive strategy affects susceptibility to anthropogenic disturbance
Pirotta, Enrico; Hin, Vincent; Mangel, Marc; New, Leslie; Costa, Daniel P.; de Roos, André M.; Harwood, John (Journal article; Peer reviewed, 2020)Animals initiate, interrupt, or invest resources in reproduction in light of their physiology and the environment. The energetic risks entailed in an individual’s reproductive strategy can influence the ability to cope ... -
Stem cell biology is population biology: differentiation of hematopoietic multipotent progenitors to common lymphoid and myeloid progenitors
Mangel, Marc; Bonsall, Michael B. (Peer reviewed; Journal article, 2013-01-17)The hematopoietic stem cell (HSC) system is a demand control system, with the demand coming from the organism, since the products of the common myeloid and lymphoid progenitor (CMP, CLP respectively) cells are essential ... -
Stochastic dynamics of interacting haematopoietic stem cell niche lineages
Székely, Tamás; Burrage, Kevin; Mangel, Marc; Bonsall, Michael B. (Peer reviewed; Journal article, 2014-09-04)Since we still know very little about stem cells in their natural environment, it is useful to explore their dynamics through modelling and simulation, as well as experimentally. Most models of stem cell systems are based ... -
Thermal transgenerational effects remain after two generations
Lee, Who-Seung; Salinas, Santiago; Lee, Young-Rog; Siskidis, Jo Anne; Mangel, Marc; Munch, Stephan (Journal article; Peer reviewed, 2020)Transgenerational plasticity (TGP) is increasingly recognized as a mechanism by which organisms can respond to environments that change across generations. Although recent empirical and theoretical studies have explored ... -
Using Grizzly Bears to Assess Harvest-Ecosystem Tradeoffs in Salmon Fisheries
Levi, Taal; Darimont, Chris T.; MacDuffee, Misty; Mangel, Marc; Paquet, Paul; Wilmers, Christopher C. (Peer reviewed; Journal article, 2012-04-10)Implementation of ecosystem-based fisheries management (EBFM) requires a clear conceptual and quantitative framework for assessing how different harvest options can modify benefits to ecosystem and human beneficiaries. We ...