Log in

Relevant bibliographies by topics / Large ecosystem models / Journal articles

To see the other types of publications on this topic, follow the link: Large ecosystem models.

Journal articles on the topic 'Large ecosystem models'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Large ecosystem models.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

LAWRIE, JOCK. "A METHOD FOR SIMPLIFYING LARGE ECOSYSTEM MODELS." Natural Resource Modeling 21, no. 2 (March 7, 2008): 248–63. http://dx.doi.org/10.1111/j.1939-7445.2008.00011.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Rietkerk, M., V. Brovkin, P. M. van Bodegom, M. Claussen, S. C. Dekker, H. A. Dijkstra, S. V. Goryachkin, et al. "Local ecosystem feedbacks and critical transitions in the climate." Biogeosciences Discussions 6, no. 5 (October 28, 2009): 10121–36. http://dx.doi.org/10.5194/bgd-6-10121-2009.

Full text

Abstract:

Abstract. Global and regional climate models, such as those used in IPCC assessments, are the best tools available for climate predictions. Such models typically account for large-scale land-atmosphere feedbacks. However, these models omit local vegetation-environment feedbacks that are crucial for critical transitions in ecosystems. Here, we reveal the hypothesis that, if the balance of feedbacks is positive at all scales, local vegetation-environment feedbacks may trigger a cascade of amplifying effects, propagating from local to large scale, possibly leading to critical transitions in the l

APA, Harvard, Vancouver, ISO, and other styles

3

Meyn, Andrea, Peter S. White, Constanze Buhk, and Anke Jentsch. "Environmental drivers of large, infrequent wildfires: the emerging conceptual model." Progress in Physical Geography: Earth and Environment 31, no. 3 (June 2007): 287–312. http://dx.doi.org/10.1177/0309133307079365.

Full text

Abstract:

Large, infrequent fires (LIFs) can have substantial impacts on both ecosystems and the economy. To better understand LIFs and to better predict the effects of human management and climate change on their occurrence, we must first determine the factors that produce them. Here, we review local and regional literature investigating the drivers of LIFs. The emerging conceptual model proposes that ecosystems can be typified based on climatic conditions that determine both fuel moisture and fuel amount. The concept distinguishes three ecosystem types: (1) biomass-rich, rarely dry ecosystems where fu

APA, Harvard, Vancouver, ISO, and other styles

4

Lawrie, Jock, and John Hearne. "A method for aggregating state variables in large ecosystem models." Mathematics and Computers in Simulation 79, no. 3 (December 2008): 368–78. http://dx.doi.org/10.1016/j.matcom.2008.01.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Eastaugh, Chris S., and Hubert Hasenauer. "A statistical thinning model for initialising large-scale ecosystem models." Scandinavian Journal of Forest Research 27, no. 6 (September 2012): 567–77. http://dx.doi.org/10.1080/02827581.2012.679679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

PIETSCH, STEPHAN A., and HUBERT HASENAUER. "Evaluating the self-initialization procedure for large-scale ecosystem models." Global Change Biology 12, no. 9 (July 17, 2006): 1658–69. http://dx.doi.org/10.1111/j.1365-2486.2006.01211.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Thurnher, Christopher, Chris S. Eastaugh, and Hubert Hasenauer. "A thinning routine for large-scale biogeochemical mechanistic ecosystem models." Forest Ecology and Management 320 (May 2014): 56–69. http://dx.doi.org/10.1016/j.foreco.2014.02.028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Belo, Ítalo, and Carina Alves. "How to Create a Software Ecosystem? A Partnership Meta-Model and Strategic Patterns." Information 12, no. 6 (June 3, 2021): 240. http://dx.doi.org/10.3390/info12060240.

Full text

Abstract:

Large keystone organizations use partnership models to manage their software ecosystem partners. Although several partnership models have been developed by platform owners, smaller companies willing to create a new ecosystem may experience difficulties to define the appropriate features of partnership models when switching from an independent software product to an ecosystem. This study proposes a partnership meta-model and four strategic patterns to operationalize it. We adopted the Design Science Research (DSR) method. The partnership meta-model was built in the first cycle of DSR, using a S

APA, Harvard, Vancouver, ISO, and other styles

9

Lippert, Kari J., and Robert Cloutier. "Cyberspace: A Digital Ecosystem." Systems 9, no. 3 (June 26, 2021): 48. http://dx.doi.org/10.3390/systems9030048.

Full text

Abstract:

Cyberspace is a new frontier, not just for hackers, but for engineers. It is a digital ecosystem, the next generation of Internet and network applications, promising a whole new world of distributed and open systems that can interact, self-organize, evolve, and adapt. These ecosystems transcend traditional collaborative environments, such as client-server, peer-to-peer, or hybrid models (e.g., web services), to become a self-organized, evolving, interactive environment. Understanding cyberspace as a system is critical if we are to properly design systems to exist within it. Considering it to b

APA, Harvard, Vancouver, ISO, and other styles

10

Angelini, Ronaldo, Angelo Antonio Agostinho, and Luiz Carlos Gomes. "Modeling energy flow in a large Neotropical reservoir: a tool do evaluate fishing and stability." Neotropical Ichthyology 4, no. 2 (June 2006): 253–60. http://dx.doi.org/10.1590/s1679-62252006000200011.

Full text

Abstract:

Recently, there is an increasing perception that the ecosystem approach gives important insights to support fisheries stock assessment and management. This paper aims to quantify energy flows in the Itaipu Reservoir (Brazil) and to simulate increase of the fishing effort of some species, using Ecopath with Ecosim software, which could allow inferences on stability. Therefore, two steady-state Itaipu models were built (1983-87 and 1988-92). Results showed that: a) there are no differences between models, and results on aging trends do not vary over time indicating that fishery does not alter th

APA, Harvard, Vancouver, ISO, and other styles

11

Moloney, Coleen L., Astrid Jarre, Hugo Arancibia, Yves-Marie Bozec, Sergio Neira, Jean-Paul Roux, and Lynne J. Shannon. "Comparing the Benguela and Humboldt marine upwelling ecosystems with indicators derived from inter-calibrated models." ICES Journal of Marine Science 62, no. 3 (January 1, 2005): 493–502. http://dx.doi.org/10.1016/j.icesjms.2004.11.009.

Full text

Abstract:

Abstract Large-scale, mass-balance trophic models have been developed for northern and southern regions of both the Benguela and Humboldt upwelling ecosystems. Four of these Ecopath models were compared and calibrated against one another. A common model structure was established, and a common basis was used to derive poorly known parameter values. The four resulting models represent ecosystems in which the main commercial fish species have been moderately to heavily fished: central-southern Chile (1992), northern-central Peru (1973–1981), South Africa (1980–1989), and Namibia (1995–2000). Quan

APA, Harvard, Vancouver, ISO, and other styles

12

Loiselle, S., V. Hull, E. Permingeat, M. Falucci, and C. Rossi. "Qualitative models to predict impacts of human interventions in a wetland ecosystem." Web Ecology 3, no. 1 (July 16, 2002): 56–69. http://dx.doi.org/10.5194/we-3-56-2002.

Full text

Abstract:

Abstract. The large shallow wetlands that dominate much of the South American continent are rich in biodiversity and complexity. Many of these undamaged ecosystems are presently being examined for their potential economic utility, putting pressure on local authorities and the conservation community to find ways of correctly utilising the available natural resources without compromising the ecosystem functioning and overall integrity. Contrary to many northern hemisphere ecosystems, there have been little long term ecological studies of these systems, leading to a lack of quantitative data on w

APA, Harvard, Vancouver, ISO, and other styles

13

Leminen, Seppo, Mervi Rajahonka, Mika Westerlund, and Robert Wendelin. "The future of the Internet of Things: toward heterarchical ecosystems and service business models." Journal of Business & Industrial Marketing 33, no. 6 (July 2, 2018): 749–67. http://dx.doi.org/10.1108/jbim-10-2015-0206.

Full text

Abstract:

Purpose This study aims to understand their emergence and types of business models in the Internet of Things (IoT) ecosystems. Design/methodology/approach The paper builds upon a systematic literature review of IoT ecosystems and business models to construct a conceptual framework on IoT business models, and uses qualitative research methods to analyze seven industry cases. Findings The study identifies four types of IoT business models: value chain efficiency, industry collaboration, horizontal market and platform. Moreover, it discusses three evolutionary paths of new business model emergenc

APA, Harvard, Vancouver, ISO, and other styles

14

Prato, Giulia, Paolo Guidetti, Fabrizio Bartolini, Luisa Mangialajo, and Patrice Francour. "The importance of high-level predators in marine protected area management: Consequences of their decline and their potential recovery in the Mediterranean context." Advances in Oceanography and Limnology 4, no. 2 (November 20, 2013): 176. http://dx.doi.org/10.4081/aiol.2013.5343.

Full text

Abstract:

High-level predators have been depleted in the oceans worldwide following centuries of selective fishing. There is widespread evidence that high-level predators’ extirpation may trigger trophic cascades leading to the degradation of marine ecosystems. Restoration of large carnivores to former levels of abundance might lead to ecosystem recovery, but very few pristine ecosystems are left as baselines for comparison. Marine protected areas (MPAs) can trigger initial rapid increases of high-level predator abundance and biomass. Nevertheless, long term protection is needed before the ecosystem's c

APA, Harvard, Vancouver, ISO, and other styles

15

Schnedler-Meyer, Nicolas Azaña, Patrizio Mariani, and Thomas Kiørboe. "The global susceptibility of coastal forage fish to competition by large jellyfish." Proceedings of the Royal Society B: Biological Sciences 283, no. 1842 (November 16, 2016): 20161931. http://dx.doi.org/10.1098/rspb.2016.1931.

Full text

Abstract:

Competition between large jellyfish and forage fish for zooplankton prey is both a possible cause of jellyfish increases and a concern for the management of marine ecosystems and fisheries. Identifying principal factors affecting this competition is therefore important for marine management, but the lack of both good quality data and a robust theoretical framework have prevented general global analyses. Here, we present a general mechanistic food web model that considers fundamental differences in feeding modes and predation pressure between fish and jellyfish. The model predicts forage fish d

APA, Harvard, Vancouver, ISO, and other styles

16

Yablonsky, Sergey. "A multidimensional platform ecosystem framework." Kybernetes 49, no. 7 (April 3, 2020): 2003–35. http://dx.doi.org/10.1108/k-07-2019-0447.

Full text

Abstract:

Purpose Ecosystems that support digital businesses maximize the economic value of network connections. This forces a shift toward platforms and ecosystems that are collaborative by nature by applying business models with multiple actors playing multiple roles. The purpose of this study is to show how the main concepts emerging from research on digital platform ecosystems (DPEs) could be organized in a taxonomy-based framework with different levels or dimensions of analysis. This study discusses some of the contingencies at these different levels and argues that future research needs to study D

APA, Harvard, Vancouver, ISO, and other styles

17

Daewel, Ute, Solfrid Sætre Hjøllo, Martin Huret, Rubao Ji, Marie Maar, Susa Niiranen, Morgane Travers-Trolet, Myron A. Peck, and Karen E. van de Wolfshaar. "Predation control of zooplankton dynamics: a review of observations and models." ICES Journal of Marine Science 71, no. 2 (August 6, 2013): 254–71. http://dx.doi.org/10.1093/icesjms/fst125.

Full text

Abstract:

Abstract Daewel, U., Hjøllo, S. S., Huret, M., Ji, R., Maar, M., Niiranen, S., Travers-Trolet, M., Peck, M. A., van de Wolfshaar, K. E. 2014. Predation control of zooplankton dynamics: a review of observations and models. – ICES Journal of Marine Science, 71: 254–271. We performed a literature review to examine to what degree the zooplankton dynamics in different regional marine ecosystems across the Atlantic Ocean is driven by predation mortality and how the latter is addressed in available modelling approaches. In general, we found that predation on zooplankton plays an important role in all

APA, Harvard, Vancouver, ISO, and other styles

18

Bayer, Anita D., Richard Fuchs, Reinhard Mey, Andreas Krause, Peter H. Verburg, Peter Anthoni, and Almut Arneth. "Diverging land-use projections cause large variability in their impacts on ecosystems and related indicators for ecosystem services." Earth System Dynamics 12, no. 1 (March 30, 2021): 327–51. http://dx.doi.org/10.5194/esd-12-327-2021.

Full text

Abstract:

Abstract. Land-use models and integrated assessment models provide scenarios of land-use and land-cover (LULC) changes following pathways or storylines related to different socioeconomic and environmental developments. The large diversity of available scenario projections leads to a recognizable variability in impacts on land ecosystems and the levels of services provided. We evaluated 16 projections of future LULC until 2040 that reflected different assumptions regarding socioeconomic demands and modeling protocols. By using these LULC projections in a state-of-the-art dynamic global vegetati

APA, Harvard, Vancouver, ISO, and other styles

19

Jia, Wantao, Yong Xu, Dongxi Li, and Rongchun Hu. "Stochastic Analysis of Predator–Prey Models under Combined Gaussian and Poisson White Noise via Stochastic Averaging Method." Entropy 23, no. 9 (September 13, 2021): 1208. http://dx.doi.org/10.3390/e23091208.

Full text

Abstract:

In the present paper, the statistical responses of two-special prey–predator type ecosystem models excited by combined Gaussian and Poisson white noise are investigated by generalizing the stochastic averaging method. First, we unify the deterministic models for the two cases where preys are abundant and the predator population is large, respectively. Then, under some natural assumptions of small perturbations and system parameters, the stochastic models are introduced. The stochastic averaging method is generalized to compute the statistical responses described by stationary probability densi

APA, Harvard, Vancouver, ISO, and other styles

20

Johnston, Robert J., and Dana Marie Bauer. "Using Meta-Analysis for Large-Scale Ecosystem Service Valuation: Progress, Prospects, and Challenges." Agricultural and Resource Economics Review 49, no. 1 (October 31, 2019): 23–63. http://dx.doi.org/10.1017/age.2019.22.

Full text

Abstract:

AbstractThis article discusses prospects and challenges related to the use of meta-regression models (MRMs) for ecosystem service benefit transfer, with an emphasis on validity criteria and post-estimation procedures given sparse attention in the ecosystem services literature. We illustrate these topics using a meta-analysis of willingness to pay for water quality changes that support aquatic ecosystem services and the application of this model to estimate water quality benefits under alternative riparian buffer restoration scenarios in New Hampshire's Great Bay Watershed. These illustrations

APA, Harvard, Vancouver, ISO, and other styles

21

Gnanadesikan, A., J. P. Dunne, and J. John. "What ocean biogeochemical models can tell us about bottom-up control of ecosystem variability." ICES Journal of Marine Science 68, no. 6 (January 1, 2011): 1030–44. http://dx.doi.org/10.1093/icesjms/fsr068.

Full text

Abstract:

Abstract Gnanadesikan, A., Dunne, J. P., and John, J. 2011. What ocean biogeochemical models can tell us about bottom-up control of ecosystem variability. – ICES Journal of Marine Science, 68: 1030–1044. Processes included in earth system models amplify the impact of climate variability on phytoplankton biomass and, therefore, on upper trophic levels. Models predict much larger relative interannual variability in large phytoplankton biomass than in total phytoplankton biomass, supporting the goal of better constraining size-structured primary production and biomass from remote sensing. The lar

APA, Harvard, Vancouver, ISO, and other styles

22

de Paoli, Hélène, Tjisse van der Heide, Aniek van den Berg, Brian R. Silliman, Peter M. J. Herman, and Johan van de Koppel. "Behavioral self-organization underlies the resilience of a coastal ecosystem." Proceedings of the National Academy of Sciences 114, no. 30 (July 10, 2017): 8035–40. http://dx.doi.org/10.1073/pnas.1619203114.

Full text

Abstract:

Self-organized spatial patterns occur in many terrestrial, aquatic, and marine ecosystems. Theoretical models and observational studies suggest self-organization, the formation of patterns due to ecological interactions, is critical for enhanced ecosystem resilience. However, experimental tests of this cross-ecosystem theory are lacking. In this study, we experimentally test the hypothesis that self-organized pattern formation improves the persistence of mussel beds (Mytilus edulis) on intertidal flats. In natural beds, mussels generate self-organized patterns at two different spatial scales:

APA, Harvard, Vancouver, ISO, and other styles

23

Varkey, Divya, Cameron H. Ainsworth, and Tony J. Pitcher. "Modelling Reef Fish Population Responses to Fisheries Restrictions in Marine Protected Areas in the Coral Triangle." Journal of Marine Biology 2012 (2012): 1–18. http://dx.doi.org/10.1155/2012/721483.

Full text

Abstract:

Marine ecosystem models are used to investigate marine protected area (MPA) benefits for coral reef ecosystems located in Raja Ampat, in the heart of the Coral Triangle. Field data from an integrated and diverse research project is used to develop a spatial ecosystem model using Ecopath, Ecosim, and Ecospace modelling software. The ecological and fisheries responses of a reef ecosystem to different levels of fishing effort restrictions inside MPAs are explored. The trade-offs of allowing some fisheries to operate inside the MPAs versus designating the MPAs as no-take zones are highlighted. The

APA, Harvard, Vancouver, ISO, and other styles

24

Xiao, Wei. "Information Technology in Environment Digital Design Based on CAD." Advanced Materials Research 1014 (July 2014): 387–90. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.387.

Full text

Abstract:

Spatial structure of landscape ecology is composed by different ecosystems, the interaction function and dynamics. It is to the entire landscape as the research object, emphasizing the interaction between the protection and management of large areas of population ecology, management of environmental resources and human activities spatial heterogeneity of the maintenance and development, ecosystem and its components on the landscape impact. This paper presents several models of several computer-aided digital design environments, and the depth of the concrete application of various models.

APA, Harvard, Vancouver, ISO, and other styles

25

Dafforn, K. A., E. L. Johnston, A. Ferguson, C. L. Humphrey, W. Monk, S. J. Nichols, S. L. Simpson, M. G. Tulbure, and D. J. Baird. "Big data opportunities and challenges for assessing multiple stressors across scales in aquatic ecosystems." Marine and Freshwater Research 67, no. 4 (2016): 393. http://dx.doi.org/10.1071/mf15108.

Full text

Abstract:

Aquatic ecosystems are under threat from multiple stressors, which vary in distribution and intensity across temporal and spatial scales. Monitoring and assessment of these ecosystems have historically focussed on collection of physical and chemical information and increasingly include associated observations on biological condition. However, ecosystem assessment is often lacking because the scale and quality of biological observations frequently fail to match those available from physical and chemical measurements. The advent of high-performance computing, coupled with new earth observation p

APA, Harvard, Vancouver, ISO, and other styles

26

Schramski, John R., Anthony I. Dell, John M. Grady, Richard M. Sibly, and James H. Brown. "Metabolic theory predicts whole-ecosystem properties." Proceedings of the National Academy of Sciences 112, no. 8 (January 26, 2015): 2617–22. http://dx.doi.org/10.1073/pnas.1423502112.

Full text

Abstract:

Understanding the effects of individual organisms on material cycles and energy fluxes within ecosystems is central to predicting the impacts of human-caused changes on climate, land use, and biodiversity. Here we present a theory that integrates metabolic (organism-based bottom-up) and systems (ecosystem-based top-down) approaches to characterize how the metabolism of individuals affects the flows and stores of materials and energy in ecosystems. The theory predicts how the average residence time of carbon molecules, total system throughflow (TST), and amount of recycling vary with the body s

APA, Harvard, Vancouver, ISO, and other styles

27

Large, Scott I., Gavin Fay, Kevin D. Friedland, and Jason S. Link. "Defining trends and thresholds in responses of ecological indicators to fishing and environmental pressures." ICES Journal of Marine Science 70, no. 4 (July 1, 2013): 755–67. http://dx.doi.org/10.1093/icesjms/fst067.

Full text

Abstract:

Abstract Large, S. I., Fay, G., Friedland, K. D., and Link, J. S. 2013. Defining trends and thresholds in responses of ecological indicators to fishing and environmental pressures. – ICES Journal of Marine Science, 70: 755–767. Both fishing and environmental forces can influence the structure of marine ecosystems. To further understand marine ecosystems and to implement ecosystem-based fisheries management (EBFM), an evaluation of ecosystem indicators is warranted. In this context, it is particularly important to identify thresholds where fishing and environmental pressures significantly influ

APA, Harvard, Vancouver, ISO, and other styles

28

Solé, Ricard V., José M. Montoya, and Douglas H. Erwin. "Recovery after mass extinction: evolutionary assembly in large–scale biosphere dynamics." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 357, no. 1421 (May 29, 2002): 697–707. http://dx.doi.org/10.1098/rstb.2001.0987.

Full text

Abstract:

Biotic recoveries following mass extinctions are characterized by a process in which whole ecologies are reconstructed from low–diversity systems, often characterized by opportunistic groups. The recovery process provides an unexpected window to ecosystem dynamics. In many aspects, recovery is very similar to ecological succession, but important differences are also apparently linked to the innovative patterns of niche construction observed in the fossil record. In this paper, we analyse the similarities and differences between ecological succession and evolutionary recovery to provide a preli

APA, Harvard, Vancouver, ISO, and other styles

29

Kurota, Hiroyuki, Murdoch K. McAllister, Eric A. Parkinson, and N. T. Johnston. "Evaluating the influence of predator–prey interactions on stock assessment and management reference points for a large lake ecosystem." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 9 (September 2016): 1372–88. http://dx.doi.org/10.1139/cjfas-2014-0414.

Full text

Abstract:

Ecosystem models are thought to offer advantages over single-species models in terms of management policy analysis. This hypothesis has proven difficult to test because of underlying system complexities, coupled with short time series and minimal contrast in environmental conditions or management policies. This paper presents a Bayesian statistical catch-at-age model to compare ecosystem models and test hypotheses about the management of a recreational fishery based on a predator–prey system using a relatively simple and data-rich ecosystem in a large lake, Kootenay Lake, British Columbia, whe

APA, Harvard, Vancouver, ISO, and other styles

30

Reum, Jonathan C. P., P. Sean McDonald, Bridget E. Ferriss, Dara M. Farrell, Chris J. Harvey, and Phillip S. Levin. "Qualitative network models in support of ecosystem approaches to bivalve aquaculture." ICES Journal of Marine Science 72, no. 8 (July 11, 2015): 2278–88. http://dx.doi.org/10.1093/icesjms/fsv119.

Full text

Abstract:

Abstract Predicting the effects of aquaculture development for coastal ecosystems remains challenging, particularly for data-limited systems, and tools that account for complex ecological interactions are needed to support ecosystem approaches to aquaculture. Here, we used qualitative network models (QNMs) to examine the potential community effects of increasing bivalve aquaculture in South Puget Sound, a large estuarine system in Washington, United States. QNMs are formalized conceptual models that require only a qualitative understanding of how variables composing a system interact (that is,

APA, Harvard, Vancouver, ISO, and other styles

31

Henehan, Michael J., Pincelli M. Hull, Donald E. Penman, James W. B. Rae, and Daniela N. Schmidt. "Biogeochemical significance of pelagic ecosystem function: an end-Cretaceous case study." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1694 (May 19, 2016): 20150510. http://dx.doi.org/10.1098/rstb.2015.0510.

Full text

Abstract:

Pelagic ecosystem function is integral to global biogeochemical cycling, and plays a major role in modulating atmospheric CO 2 concentrations ( p CO 2 ). Uncertainty as to the effects of human activities on marine ecosystem function hinders projection of future atmospheric p CO 2 . To this end, events in the geological past can provide informative case studies in the response of ecosystem function to environmental and ecological changes. Around the Cretaceous–Palaeogene (K–Pg) boundary, two such events occurred: Deccan large igneous province (LIP) eruptions and massive bolide impact at the Yuc

APA, Harvard, Vancouver, ISO, and other styles

32

Yool, A., E. E. Popova, and T. R. Anderson. "Medusa-1.0: a new intermediate complexity plankton ecosystem model for the global domain." Geoscientific Model Development 4, no. 2 (May 10, 2011): 381–417. http://dx.doi.org/10.5194/gmd-4-381-2011.

Full text

Abstract:

Abstract. The ongoing, anthropogenically-driven changes to the global ocean are expected to have significant consequences for plankton ecosystems in the future. Because of the role that plankton play in the ocean's "biological pump", changes in abundance, distribution and productivity will likely have additional consequences for the wider carbon cycle. Just as in the terrestrial biosphere, marine ecosystems exhibit marked diversity in species and functional types of organisms. Predicting potential change in plankton ecosystems therefore requires the use of models that are suited to this divers

APA, Harvard, Vancouver, ISO, and other styles

33

Donoso, Isabel, Matthias Schleuning, Daniel García, and Jochen Fründ. "Defaunation effects on plant recruitment depend on size matching and size trade-offs in seed-dispersal networks." Proceedings of the Royal Society B: Biological Sciences 284, no. 1855 (May 31, 2017): 20162664. http://dx.doi.org/10.1098/rspb.2016.2664.

Full text

Abstract:

Defaunation by humans causes a loss of large animals in many ecosystems globally. Recent work has emphasized the consequences of downsizing in animal communities for ecosystem functioning. However, no study so far has integrated network theory and life-history trade-offs to mechanistically evaluate the functional consequences of defaunation in plant–animal networks. Here, we simulated an avian seed-dispersal network and its derived ecosystem function seedling recruitment to assess the relative importance of different size-related mechanisms. Specifically, we considered size matching (between b

APA, Harvard, Vancouver, ISO, and other styles

34

Park, Jong-Yeon, Charles A. Stock, John P. Dunne, Xiaosong Yang, and Anthony Rosati. "Seasonal to multiannual marine ecosystem prediction with a global Earth system model." Science 365, no. 6450 (July 18, 2019): 284–88. http://dx.doi.org/10.1126/science.aav6634.

Full text

Abstract:

Climate variations have a profound impact on marine ecosystems and the communities that depend upon them. Anticipating ecosystem shifts using global Earth system models (ESMs) could enable communities to adapt to climate fluctuations and contribute to long-term ecosystem resilience. We show that newly developed ESM-based marine biogeochemical predictions can skillfully predict satellite-derived seasonal to multiannual chlorophyll fluctuations in many regions. Prediction skill arises primarily from successfully simulating the chlorophyll response to the El Niño–Southern Oscillation and capturin

APA, Harvard, Vancouver, ISO, and other styles

35

Cogan, Christopher B., Brian J. Todd, Peter Lawton, and Thomas T. Noji. "The role of marine habitat mapping in ecosystem-based management." ICES Journal of Marine Science 66, no. 9 (August 6, 2009): 2033–42. http://dx.doi.org/10.1093/icesjms/fsp214.

Full text

Abstract:

Abstract Cogan, C. B., Todd, B. J., Lawton, P., and Noji, T. T. 2009. The role of marine habitat mapping in ecosystem-based management. – ICES Journal of Marine Science, 66: 2033–2042. Ecosystem-based management (EBM) and the related concept of large marine ecosystems (LMEs) are sometimes criticized as being too broad for many management and research applications. At the same time, there is a great need to develop more effectively some substantive scientific methods to empower EBM. Marine habitat mapping (MHM) is an example of an applied set of field methods that support EBM directly and contr

APA, Harvard, Vancouver, ISO, and other styles

36

Yool, A., E. E. Popova, and T. R. Anderson. "<i>MEDUSA</i>: a new intermediate complexity plankton ecosystem model for the global domain." Geoscientific Model Development Discussions 3, no. 4 (October 29, 2010): 1939–2019. http://dx.doi.org/10.5194/gmdd-3-1939-2010.

Full text

Abstract:

Abstract. The ongoing, anthropogenically-driven changes to the global ocean are expected to have significant consequences for plankton ecosystems in the future. Because of the role that plankton play in the ocean's "biological pump", changes in abundance, distribution and productivity will likely have additional consequences for the wider carbon cycle. Just as in the terrestrial biosphere, marine ecosystems exhibit marked diversity in species and functional types of organisms. Predicting potential change in plankton ecosystems therefore requires the use of models that are suited to this divers

APA, Harvard, Vancouver, ISO, and other styles

37

Jacobsen, Nis S., Timothy E. Essington, and Ken H. Andersen. "Comparing model predictions for ecosystem-based management." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 4 (April 2016): 666–76. http://dx.doi.org/10.1139/cjfas-2014-0561.

Full text

Abstract:

Ecosystem modeling is becoming an integral part of fisheries management, but there is a need to identify differences between predictions derived from models employed for scientific and management purposes. Here, we compared two models: a biomass-based food-web model (Ecopath with Ecosim (EwE)) and a size-structured fish community model. The models were compared with respect to predicted ecological consequences of fishing to identify commonalities and differences in model predictions for the California Current fish community. We compared the models regarding direct and indirect responses to fis

APA, Harvard, Vancouver, ISO, and other styles

38

Laufkötter, C., M. Vogt, N. Gruber, M. Aita-Noguchi, O. Aumont, L. Bopp, E. Buitenhuis, et al. "Drivers and uncertainties of future global marine primary production in marine ecosystem models." Biogeosciences Discussions 12, no. 4 (February 27, 2015): 3731–824. http://dx.doi.org/10.5194/bgd-12-3731-2015.

Full text

Abstract:

Abstract. Past model studies have projected a global decrease in marine net primary production (NPP) over the 21st century, but these studies focused on the multi-model mean and mostly ignored the large inter-model differences. Here, we analyze model simulated changes of NPP for the 21st century under IPCC's high emission scenario RCP8.5 using a suite of nine coupled carbon–climate Earth System Models with embedded marine ecosystem models with a focus on the spread between the different models and the underlying reasons. Globally, five out of the nine models show a decrease in NPP over the cou

APA, Harvard, Vancouver, ISO, and other styles

39

Yu, Tong, and Qianlai Zhuang. "Modeling biological nitrogen fixation in global natural terrestrial ecosystems." Biogeosciences 17, no. 13 (July 13, 2020): 3643–57. http://dx.doi.org/10.5194/bg-17-3643-2020.

Full text

Abstract:

Abstract. Biological nitrogen fixation plays an important role in the global nitrogen cycle. However, the fixation rate has been usually measured or estimated at a particular observational site. To quantify the fixation amount at the global scale, process-based models are needed. This study develops a biological nitrogen fixation model to quantitatively estimate the nitrogen fixation rate by plants in a natural environment. The revised nitrogen module better simulates the nitrogen cycle in comparison with our previous model that has not considered the fixation effects. The new model estimates

APA, Harvard, Vancouver, ISO, and other styles

40

Anderson, Thomas R., and Wendy C. Gentleman. "Remembering John Steele and his models for understanding the structure and function of marine ecosystems." Journal of Plankton Research 41, no. 5 (September 2019): 609–20. http://dx.doi.org/10.1093/plankt/fbz042.

Full text

Abstract:

Abstract John Steele (1926–2013) is remembered for his ecosystem modelling studies on the role of biological interactions and environment on the structure and function of marine ecosystems, including consequences for fish production and fisheries management. Here, we provide a scientific tribute to Steele focusing on, by means of example, his modelling of plankton predation [Steele and Henderson (1992) The role of predation in plankton models. J. Plankton Res., 14, 157–172] that showed that differences in ecosystem dynamics between the subarctic Pacific and North Atlantic oceans can be explain

APA, Harvard, Vancouver, ISO, and other styles

41

Zador, Stephani G., Kirstin K. Holsman, Kerim Y. Aydin, and Sarah K. Gaichas. "Ecosystem considerations in Alaska: the value of qualitative assessments." ICES Journal of Marine Science 74, no. 1 (August 20, 2016): 421–30. http://dx.doi.org/10.1093/icesjms/fsw144.

Full text

Abstract:

The application of ecosystem considerations, and in particular ecosystem report cards, in federal groundfish fisheries management in Alaska can be described as an ecosystem approach to fisheries management (EAFM). Ecosystem information is provided to managers to establish an ecosystem context within which deliberations of fisheries quota occur. Our goal is to make the case for the need for qualitative ecosystem assessments in EAFM, specifically that qualitative synthesis has advantages worthy to keep a permanent place at the fisheries management table. These advantages include flexibility and

APA, Harvard, Vancouver, ISO, and other styles

42

Kirschbaum, Miko U. F., Guillaume Simioni, Belinda E. Medlyn, and Ross E. McMurtrie. "On the importance of including soil nutrient feedback effects for predicting ecosystem carbon exchange." Functional Plant Biology 30, no. 2 (2003): 223. http://dx.doi.org/10.1071/fp02152.

Full text

Abstract:

To grow, plants need both carbon, which is fixed in photosynthesis, and inorganic nutrients, which are generally obtained from the soil. Much interest currently exists in trying to understand the uptake and storage of carbon by terrestrial ecosystems. This paper investigates to what extent carbon gain and storage are modified by soil nutrient availability. This issue is investigated in relation to both short-term carbon fluxes on the time scale of interannual variability and long-term ecosystem carbon stocks on time scales of several thousand years.We conclude from simulations with an ecosyste

APA, Harvard, Vancouver, ISO, and other styles

43

Kimmins, J. P., R. S. Rempel, C. V. J. Welham, B. Seely, and K. C. J. Van Rees. "Biophysical sustainability, process-based monitoring and forest ecosystem management decision support systems." Forestry Chronicle 83, no. 4 (August 1, 2007): 502–14. http://dx.doi.org/10.5558/tfc83502-4.

Full text

Abstract:

Sustainability is a key concept in resource management and environmental issues, but implementation is fraught with difficulty due to lack of agreement as to what it means. Because of the ubiquity of disturbance, ecosystem sustainability inevitably involves change. We define stand-level biophysical sustainability as non-declining patterns of change over at least three cycles of disturbance, and landscape-level sustainability as a shifting mosaic of non-declining stand change, the overall character of which remains within acceptable limits over time. Simple empirical assessment (i.e., monitorin

APA, Harvard, Vancouver, ISO, and other styles

44

Zhu, Q., Q. Zhuang, D. Henze, K. Bowman, M. Chen, Y. Liu, Y. He, et al. "Constraining terrestrial ecosystem CO<sub>2</sub> fluxes by integrating models of biogeochemistry and atmospheric transport and data of surface carbon fluxes and atmospheric CO<sub>2</sub> concentrations." Atmospheric Chemistry and Physics Discussions 14, no. 16 (September 3, 2014): 22587–638. http://dx.doi.org/10.5194/acpd-14-22587-2014.

Full text

Abstract:

Abstract. Regional net carbon fluxes of terrestrial ecosystems could be estimated with either biogeochemistry models by assimilating surface carbon flux measurements or atmospheric CO2 inversions by assimilating observations of atmospheric CO2 concentrations. Here we combine the ecosystem biogeochemistry modeling and atmospheric CO2 inverse modeling to investigate the magnitude and spatial distribution of the terrestrial ecosystem CO2 sources and sinks. First, we constrain a terrestrial ecosystem model (TEM) at site level by assimilating the observed net ecosystem production (NEP) for various

APA, Harvard, Vancouver, ISO, and other styles

45

Bystrov, A. V., T. O. Tolstykh, and A. G. Radaykin. "Cross-Industry Ecosystem as an Organizational and Economic Model for the Development of High-Tech Industries." Economics and Management 26, no. 6 (August 25, 2020): 564–76. http://dx.doi.org/10.35854/1998-1627-2020-6-564-576.

Full text

Abstract:

The presented study examines the fundamental prerequisites for the emergence of digital platforms, which would provide a global view of the role that platforms play in creating a new organizational model — an ecosystem of high-tech industries.Aim. In the context of industrial digitalization, the study aims to substantiate the creation of a modern mechanism for coordinating high-tech market participants within a single economic and organizational space — an ecosystem based on a cross-industry digital platform.Tasks. The authors analyze the international experience of implementing digital platfo

APA, Harvard, Vancouver, ISO, and other styles

46

Hudiburg, Tara W., Philip E. Higuera, and Jeffrey A. Hicke. "Fire-regime variability impacts forest carbon dynamics for centuries to millennia." Biogeosciences 14, no. 17 (August 31, 2017): 3873–82. http://dx.doi.org/10.5194/bg-14-3873-2017.

Full text

Abstract:

Abstract. Wildfire is a dominant disturbance agent in forest ecosystems, shaping important biogeochemical processes including net carbon (C) balance. Long-term monitoring and chronosequence studies highlight a resilience of biogeochemical properties to large, stand-replacing, high-severity fire events. In contrast, the consequences of repeated fires or temporal variability in a fire regime (e.g., the characteristic timing or severity of fire) are largely unknown, yet theory suggests that such variability could strongly influence forest C trajectories (i.e., future states or directions) for mil

APA, Harvard, Vancouver, ISO, and other styles

47

Churkina, G., S. Zaehle, J. Hughes, N. Viovy, Y. Chen, M. Jung, B. W. Heumann, N. Ramankutty, M. Heimann, and C. Jones. "Interactions between nitrogen deposition, land cover conversion, and climate change determine the contemporary carbon balance of Europe." Biogeosciences 7, no. 9 (September 20, 2010): 2749–64. http://dx.doi.org/10.5194/bg-7-2749-2010.

Full text

Abstract:

Abstract. European ecosystems are thought to take up large amounts of carbon, but neither the rate nor the contributions of the underlying processes are well known. In the second half of the 20th century, carbon dioxide concentrations have risen by more that 100 ppm, atmospheric nitrogen deposition has more than doubled, and European mean temperatures were increasing by 0.02 °C yr−1. The extents of forest and grasslands have increased with the respective rates of 5800 km2 yr−1 and 1100 km2 yr−1 as agricultural land has been abandoned at a rate of 7000 km2 yr−1. In this study, we analyze the re

APA, Harvard, Vancouver, ISO, and other styles

48

Li, Zhijie, Qiuwen Chen, Qiang Xu, and Koen Blanckaert. "Generalized Likelihood Uncertainty Estimation Method in Uncertainty Analysis of Numerical Eutrophication Models: Take BLOOM as an Example." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/701923.

Full text

Abstract:

Uncertainty analysis is of great importance to assess and quantify a model's reliability, which can improve decision making based on model results. Eutrophication and algal bloom are nowadays serious problems occurring on a worldwide scale. Numerical models offer an effective way to algal bloom prediction and management. Due to the complex processes of aquatic ecosystem, such numerical models usually contain a large number of parameters, which may lead to important uncertainty in the model results. This research investigates the applicability of generalized likelihood uncertainty estimation (G

APA, Harvard, Vancouver, ISO, and other styles

49

del Río-Mena, Trinidad, Louise Willemen, Anton Vrieling, and Andy Nelson. "Understanding Intra-Annual Dynamics of Ecosystem Services Using Satellite Image Time Series." Remote Sensing 12, no. 4 (February 21, 2020): 710. http://dx.doi.org/10.3390/rs12040710.

Full text

Abstract:

Landscape processes fluctuate over time, influencing the intra-annual dynamics of ecosystem services. However, current ecosystem service assessments generally do not account for such changes. This study argues that information on the dynamics of ecosystem services is essential for understanding and monitoring the impact of land management. We studied two regulating ecosystem services (i. erosion prevention, ii. regulation of water flows) and two provisioning services (iii. provision of forage, iv. biomass for essential oil production) in thicket vegetation and agricultural fields in the Baviaa

APA, Harvard, Vancouver, ISO, and other styles

50

Bond-Lamberty, B., J. P. Fisk, J. A. Holm, V. Bailey, G. Bohrer, and C. M. Gough. "Moderate forest disturbance as a stringent test for gap and big-leaf models." Biogeosciences 12, no. 2 (January 27, 2015): 513–26. http://dx.doi.org/10.5194/bg-12-513-2015.

Full text

Abstract:

Abstract. Disturbance-induced tree mortality is a key factor regulating the carbon balance of a forest, but tree mortality and its subsequent effects are poorly represented processes in terrestrial ecosystem models. It is thus unclear whether models can robustly simulate moderate (non-catastrophic) disturbances, which tend to increase biological and structural complexity and are increasingly common in aging US forests. We tested whether three forest ecosystem models – Biome-BGC (BioGeochemical Cycles), a classic big-leaf model, and the ZELIG and ED (Ecosystem Demography) gap-oriented models –

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!