141 Hits in 14.3 sec

Incorporating Regime Metrics into Latent Variable Dynamic Models to Detect Early-Warning Signals of Functional Changes in Fisheries Ecology [chapter]

Neda Trifonova, Daniel Duplisea, Andrew Kenny, David Maxwell, Allan Tucker
2014 Lecture Notes in Computer Science  
A latent variable is incorporated to model functional collapse, where the underlying food web structure dramatically changes irrevocably (known as a regime shift).  ...  The hidden variable appears to reflect some of the metrics' characteristics in terms of identifying regime shifts that are known to have occurred.  ...  In this paper we have explored the use of regime metrics in conjunction with latent variables which proved useful (compared to these without) in terms of detecting early-warning signals (significantly  ... 
doi:10.1007/978-3-319-11812-3_26 fatcat:jqx23rj53rb5japs3b2yjmuiye

Broad-Scale Climate Influences on Spring-Spawning Herring (Clupea harengus, L.) Recruitment in the Western Baltic Sea

Joachim P. Gröger, Hans-Harald Hinrichsen, Patrick Polte, Konstantinos I. Stergiou
2014 PLoS ONE  
We suggest incorporating climate-induced effects into stock and risk assessments and management strategies as part of the EU ecosystem approach to support sustainable herring fisheries in the Western Baltic  ...  Using different model selection criteria our results reveal that in contrast to NAO and AMO, the BSI shows a significant positive but delayed signal on the annual dynamics of herring recruitment.  ...  Acknowledgments A special thank goes to the anonymous reviewers for their constructive support while improving the manuscript. Author Contributions Analyzed the data: JPG HHH.  ... 
doi:10.1371/journal.pone.0087525 pmid:24586279 pmcid:PMC3934862 fatcat:7airk56zuvfatfjy35235k7tji

What drives marine fisheries production?

SK Gaichas, A Bundy, TJ Miller, E Moksness, KI Stergiou
2012 Marine Ecology Progress Series  
Major national institutes (DFO, IMR, NMFS) also contributed significant in-kind and directed resources to this project. This work is also endorsed by ESSAS.  ...  Benoit of Fisheries and Oceans Canada (DFO) for providing biomass and catch data for the Gulf of St. Lawrence.  ...  detected change.  ... 
doi:10.3354/meps09841 fatcat:i3vyq4qzerbpnhuylqdd4lqdgi

Ecological thresholds in marine communities: theory, experiments and management

RW Osman, P Munguia, RN Zajac
2010 Marine Ecology Progress Series  
dynamics in soft-sediment communities ... 253-266 Hewitt JE, Thrush SF Empirical evidence of an approaching alternate state produced by intrinsic community dynamics, climatic variability and management  ...  In this Theme Section conceptual, modeling, and empirical studies explore threshold dynamics in marine coastal systems in a variety of habitats and across different scales.  ...  The ecosystem response model used  ... 
doi:10.3354/meps08765 fatcat:ridbn6pkufhhbb6arpry72qjca

Using Multitemporal Imagery to Improve Mapping and Inventory of Forested Roads in Michigan's Upper Peninsula

David M. Banach, Colin N. Brooks, Mark A. Fedora
2016 Transportation Research Record  
We develop comprehensive statistical regression models to project medium-range lake ice cover only using projected indices of NAO, Nino3.4, AMO, and PDO one to several months ahead of time.  ...  The purpose of this work was to develop a semi continuous ship-board Autonomous Plankton Metabolic Monitor (APMM) to measure primary productivity (P) and respiration (R), and evaluate this system in two  ...  The aim of this work is to lay the foundation for a strategic early warning system.  ... 
doi:10.3141/2580-07 fatcat:hvnrxsqcwzgbjiogbyo6ltfcry

A new method to generate a high-resolution global distribution map of lake chlorophyll

Michael J. Sayers, Amanda G. Grimm, Robert A. Shuchman, Andrew M. Deines, David B. Bunnell, Zachary B. Raymer, Mark W. Rogers, Whitney Woelmer, David H. Bennion, Colin N. Brooks, Matthew A. Whitley, David M. Warner (+1 others)
2015 International Journal of Remote Sensing  
A new method to generate a high-resolution global distribution map of lake chlorophyll.  ...  We develop comprehensive statistical regression models to project medium-range lake ice cover only using projected indices of NAO, Nino3.4, AMO, and PDO one to several months ahead of time.  ...  The purpose of this work was to develop a semi continuous ship-board Autonomous Plankton Metabolic Monitor (APMM) to measure primary productivity (P) and respiration (R), and evaluate this system in two  ... 
doi:10.1080/01431161.2015.1029099 fatcat:5uugnnzklrgtlam6gfq7gwlxsy

Future HAB science: Directions and challenges in a changing climate

Mark L. Wells, Bengt Karlson, Angela Wulff, Raphael Kudela, Charles Trick, Valentina Asnaghi, Elisa Berdalet, William Cochlan, Keith Davidson, Maarten De Rijcke, Stephanie Dutkiewicz, Gustaaf Hallegraeff (+7 others)
2019 Harmful Algae  
Climate-driven changes in coastal oceanographic and ecological systems are becoming substantial, in some cases exacerbated by localized human activities.  ...  (senso lato), symposium participants explored more broadly the subjects of cyanobacterial HABs, benthic HABs, HAB effects on fisheries, HAB modelling challenges, and the contributions that molecular approaches  ...  VA's attendance to the workshop was funded in the framework of M3-HABs project (ENPI CBC Mediterranean Sea Basin Programme,  ... 
doi:10.1016/j.hal.2019.101632 pmid:32057342 fatcat:avffvoh5dvbjtagna5zhzoz76y

Purpose, processes, partnerships, and products: four Ps to advance participatory socio-environmental modeling

Steven Gray, Alexey Voinov, Michael Paolisso, Rebecca Jordan, Todd BenDor, Pierre Bommel, Pierre Glynn, Beatrice Hedelin, Klaus Hubacek, Josh Introne, Nagesh Kolagani, Bethany Laursen (+5 others)
2017 Ecological Applications  
However, recent advances in the theory of social-ecological networks and in multi-level network analysis have led to an increase in the study of governance as interconnected social and ecological systems  ...  In the experiments, individuals were placed into different network motifs that varied in social and ecological connectivity, and were tasked with performing identical management tasks.  ...  They are difficult to predict because of an absence of early warning signals.  ... 
doi:10.1002/eap.1627 pmid:28922513 fatcat:lh6mglx47bbqbh7lsnwiw2jelq

TROUBLE ON OILED WATERS: Lessons from theExxon ValdezOil Spill

R. T. Paine, Jennifer L. Ruesink, Adrian Sun, Elaine L. Soulanille, Marjorie J. Wonham, Christopher D. G. Harley, Daniel R. Brumbaugh, David L. Secord
1996 Annual Review of Ecology and Systematics  
Oil spills, while tragic, represent opportunities to gain insight into the dynamics of marine ecosystems and should not be wasted.  ...  Despite billions of dollars expended, little new understanding was gained about the recovery dynamics of a high latitude marine ecosystem subject to an anthropogenic pulse perturbation.  ...  In 1994, only 12 km of shoreline received herring spawn, signaling a crash in stocks that prompted complete closure of the fishery (55) .  ... 
doi:10.1146/annurev.ecolsys.27.1.197 fatcat:oqwd3uqvxvap7aw7jkvvmu7bj4

New Method for Calculating Causal Relationships (At: XXIII International Biometric Conference, Montréal, Québec, Canada, page 49)

Ilija Barukčić
2006 Zenodo  
Scharfstein, Johns Hopkins Bloomberg School of Public Health 10:40 M2.2 Metrics for Evaluating Early Detection Methods K.  ...  in Case- Control Studies -A Latent Variable Method T.  ... 
doi:10.5281/zenodo.3902085 fatcat:fiwpmehgwzbwnfc6ths447hk7i

Assessment of Vegetation Trends in Drylands from Time Series of Earth Observation Data [chapter]

Rasmus Fensholt, Stephanie Horion, Torbern Tagesson, Andrea Ehammer, Kenneth Grogan, Feng Tian, Silvia Huber, Jan Verbesselt, Stephen D. Prince, Compton J. Tucker, Kjeld Rasmussen
2015 Remote Sensing Time Series  
Ministry of Education and Research (BMBF) in the frame of the funding measure "Sustainable Land Management".  ...  Gessner for discussion of the manuscript. Furthermore, we are grateful to two anonymous reviewers for their valuable comments. Further thanks go to P.  ...  Furthermore, knowledge about the vulnerability of a region toward climatic variability is useful in establishing early warning systems, to distinguish between climatic or human induced changes in surface  ... 
doi:10.1007/978-3-319-15967-6_8 fatcat:2cl5kwf33zg7hl2k3syukjpa6q

Political Perspectives on Economic Growth and Sustainability [article]

Emil Urhammer
2016 Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet  
The authors behind the alternative energy plan belonged to a group of researchers 14 centred at the Technical University of Denmark, spearheaded by the physics professor and economic growth antagonist,  ...  Acknowledgements The authors wish to thank three anonymous reviewers for their valuable comments on an earlier version of this article.  ...  variables to change.  ... 
doi:10.5278/ fatcat:4w4ufhwa3bf67bypb6qf63uzlm

ATLAS Deliverable 3.2: Water masses controls on biodiversity and biogeography

Lea-Anne Henry, Patricia Puerta
2019 Zenodo  
In-depth analyses of the influence of water mass identity/properties and organic matter supply on biodiversity and biogeography from (1) the Alboran Sea to the Azores, (2) the UK continental shelf and  ...  Synthesis overview report on the influence of water mass properties on the biodiversity and biogeography of deep N Atlantic ecosystems.  ...  Acknowledgements We would like to acknowledge captains, crews and scientists participated in the cruises where data used in the present study were collected (Research Vessel "Lough Foyle" -June/July 2003  ... 
doi:10.5281/zenodo.3548887 fatcat:3mk2ivgitnamvfzc677kiqm7nq

Social physics [article]

Marko Jusup, Petter Holme, Kiyoshi Kanazawa, Misako Takayasu, Ivan Romic, Zhen Wang, Suncana Gecek, Tomislav Lipic, Boris Podobnik, Lin Wang, Wei Luo, Tin Klanjscek (+3 others)
2021 arXiv   pre-print
Recent decades have seen a rise in the use of physics-inspired or physics-like methods in attempts to resolve diverse societal problems.  ...  Starting with a set of topics that pertain to the modern way of living and factors that enable humankind's prosperous existence, we discuss urban development and traffic, the functioning of financial markets  ...  Acknowledgements We are thankful to Sheikh Taslim  ... 
arXiv:2110.01866v1 fatcat:ccfxyezl6zgddd6uvrxubmaxua

Conservation biology for all

2010 ChoiceReviews  
GAP analysis: a geographic approach to protection of biological diversity. Wildlife Monographs, 123, 1-41. Sellars, R. W. (1997). Preserving nature in the national parks: a history.  ...  Acknowledgements ecology: more than the sum of the parts. Yale University Press, New Haven, Connecticut. Gómez-Pompa, A., Vázquez-Yanes, C., and Guevara, S. (1972).  ...  Mcintyre and Hobbs (1999) incorporated this complexity into a conceptual model by outlining four stages along a trajectory of landscape change.  ... 
doi:10.5860/choice.48-2055 fatcat:qwhlin7vk5cqllgqrijinrsmka
« Previous Showing results 1 — 15 out of 141 results