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Nonlinear dimensionality reduction: Alternative ordination approaches for extracting and visualizing biodiversity patterns in tropical montane forest vegetation data

Miguel D. Mahecha, Alfredo Martínez, Gunnar Lischeid, Erwin Beck
2007 Ecological Informatics  
As an example we investigated seven plots (subdivided in 456 subplots) in different secondary tropical montane forests with 773 species of vascular plants.  ...  Ecological patterns are difficult to extract directly from vegetation data. The respective surveys provide a high number of interrelated species occurrence variables.  ...  Acknowledgements The data collection period was partly supported by the German Research Foundation (DFG) in the project 402: "Functionality in a Tropical Mountain Rainforest".  ... 
doi:10.1016/j.ecoinf.2007.05.002 fatcat:uebpihq6fvbhfbpjfglozaihfu

Conference program and abstracts. International Biogeography Society 7th Biennial Meeting. 8–12 January 2015, Bayreuth, Germany. Frontiers of Biogeography Vol. 6, suppl. 1. International Biogeography Society, 246 pp

Daniel Gavin, Carl Beierkuhnlein, Stefan Holzheu, Birgit Thies, Karen Faller, Rosemary Gillespie, Joaquín Hortal
2014 Frontiers of Biogeography  
Ecotonal areas for the two different types of vegetation were extracted and mapped.  ...  Keywords: tropical forest, alternative stable states, forest-fire feedbacks, palaeoecology, phytoliths 8.22 ⚡ General introduction to paleobioDB, an rOpenSci R-package to get fossil data for researchThe  ...  A comparative demographic approach and tree-based methods will provide a first evaluation of speciation patterns in the CFEA.  ... 
doi:10.21425/f56525118 fatcat:3puoxcjd4bcublj6adlg2nzczq

Conservation biology for all

2010 ChoiceReviews  
Tropical conservation biology. Blackwell, Oxford, UK. Soulé, M. E. (1980). Thresholds for survival: criteria for maintenance of fitness and evolutionary potential. In M. E. Soulé, and B. A.  ...  Using biodiversity as a justification for nature protection in the U. S. Wild Earth, 6, 71-80. Harris, L. D. (1984).  ...  The effects of fire on forest animals are less well continues FIRE AND BIODIVERSITY 167 vegetation patterns.  ... 
doi:10.5860/choice.48-2055 fatcat:qwhlin7vk5cqllgqrijinrsmka

Gradient analysis of landscape variation in Norway [article]

Trond Simensen, Rune Halvorsen, Lars Erikstad
2020 bioRxiv   pre-print
We identified patterns of variation in landscape element composition by parallel use of two multivariate statistical methods, detrended correspondence analysis (DCA) and global nonmetric multidimensional  ...  For each observation unit, 85 landscape variables were recorded.  ...  Nonlinear dimensionality 19 reduction: Alternative ordination approaches for extracting and visualizing 20 biodiversity patterns in tropical montane forest vegetation data. -Ecol.  ... 
doi:10.1101/2020.06.19.161372 fatcat:43z5kimct5dc7lvmnn6y3yoksy

Mapping the possible occurrence of archaeological sites by Bayesian inference

P.A. Finke, E. Meylemans, J. Van de Wauw
2008 Journal of Archaeological Science  
This results in a reduction of the requisite number of samples, which is 36, 31, 24 and 14 for respectively coastal forest, miombo woodland, teak plantation and cashew plantation with a precision of 1  ...  The natural vegetation of the region is tropical, coastal rainforest. With different porosities and spatial arrangements have been obtained.  ...  A conditioned Latin hypercube sampling (cLHS) scheme was used to sample the spectral data space and select 213 representative samples for laboratory soil analyses.  ... 
doi:10.1016/j.jas.2008.05.004 fatcat:4zjqmj4d45e2zf5s3bbdtzeovm

Exploration of cell development pathways through high dimensional single cell analysis in trajectory space

Denis Dermadi, Michael Bscheider, Kristina Bjegovic, Nicole H. Lazarus, Agata Szade, Husein Hadeiba, Eugene C. Butcher
2020 iScience  
algorithms and orders C. elegans cells concordantly to the associated embryonic time. tSpace profiling of complex populations is well suited for hypothesis generation in developing cell systems.  ...  Applied to flow and mass cytometry data, the method faithfully reconstructs thymic T cell development and reveals development and trafficking regulation of tonsillar B cells.  ...  ITI Seed 122C158 and CCSB grant U54-CA209971 to D.D. and E.C.B.  ... 
doi:10.1016/j.isci.2020.100842 pmid:32058956 pmcid:PMC6997593 fatcat:jyqvl3ekqfgejh633wad6li2ae

Strengths and Weaknesses of Quantitative Climate Reconstructions Based on Late-Quaternary Biological Proxies

H. John B. Birks
2011 The Open Ecology Journal  
Three basic approaches to reconstructing past climate from palaeoecological data are outlined and discussed in terms of their assumptions, strengths, and weaknesses.  ...  taxon response models for all m taxa Relationships between X m and Y m (U m ) 1.  ...  ACKNOWLEDGEMENTS We are very grateful to many friends and colleagues for valuable discussions and ideas about palaeoclimate reconstructions, in particular Hilary Birks, Cajo ter Braak, Steve Brooks, Joel  ... 
doi:10.2174/1874213001003020068 fatcat:ukrcs5chxva4nke3746mp7j2ma

Strengths and Weaknesses of Quantitative Climate Reconstructions based on Late-Quaternary Biological Proxies

H. John B. Birks
2012 Quaternary International  
Three basic approaches to reconstructing past climate from palaeoecological data are outlined and discussed in terms of their assumptions, strengths, and weaknesses.  ...  taxon response models for all m taxa Relationships between X m and Y m (U m ) 1.  ...  ACKNOWLEDGEMENTS We are very grateful to many friends and colleagues for valuable discussions and ideas about palaeoclimate reconstructions, in particular Hilary Birks, Cajo ter Braak, Steve Brooks, Joel  ... 
doi:10.1016/j.quaint.2012.07.228 fatcat:hqkfh3p6jbffxbo62m7dluztm4

Volume 55, Number 2 (March 2002)

Editorial Board
2002 Journal of range management  
Drought, however, reduced (P <_ 0.01) productivity of western wheatgrass 50% in 1994 whereas grazing reduced productivity (P <_ 0.01) by 46% in 1994 and 69% in 1995.  ...  ecosystems is critical for developing effective drought management strategies.  ...  Echo Fisher, Cheryl Bolen, and Paige Wolken for the many hours they invested in excavating and processing samples.  ... 
doi:10.2458/azu_jrm_v55i2_board fatcat:5qhv6on5ofdp3lfnkr7gk3xqua

The ecology of Central European non-arboreal ants – 37 years of a broad-spectrum analysis under permanent taxonomic control

Bernhard Seifert
2017 Soil Organisms  
Basically each type of terrestrial, non-arboreal habitat in which ants are able to reproduce was investigated and the full environmental gradient for almost each environmental variable was covered.  ...  Two new methods for estimation of ant biomass and ant species richness are introduced.  ...  determination; Holger Martz (Konstanz), Roland Schultz (Görlitz) and Michael Krahl (Görlitz) for help in field work, Roland Schultz (Görlitz) for proofreading and Karsten Wesche (Görlitz) for critical  ... 
doaj:9812323df1e445138cde6a26195ae942 fatcat:k3kccc45tvf2lcd3hnsxpnnhdy

Towards a More Sustainable Agriculture

Dennis J. Gray, Robert N. Trigiano
2011 Critical reviews in plant sciences  
W. 1996 Jackson, L., Bawa, K., Pascual, U., and Perrings, C. 2005. agroBIODIVERSITY: A New Science Agenda for Biodiversity in Support of Sustainable Agroecosystems (dIVERSITAS, 2005). http://www.agrobiodiversity-diversitas  ...  for wine and other beverages.  ...  In addition, an alternative approach is recommended based on hazard reduction principles commonly found in industrial safety programs.  ... 
doi:10.1080/07352689.2011.553147 fatcat:bwehia5zovcjlhzxpvj5uh2luy

Lakes and reservoirs as sentinels, integrators, and regulators of climate change

Craig E. Williamson, Jasmine E. Saros, Warwick F. Vincent, John P. Smol
2009 Limnology and Oceanography  
Forcing data for the simulations included meteorological data extracted from global and regional climate model outputs, and current day inflows and withdrawal characteristics.  ...  Species data are reduced to ordination axis scores that capture major changes in assemblages through time.  ... 
doi:10.4319/lo.2009.54.6_part_2.2273 fatcat:jnmxnj36ejcsjptd6yltwe33hq

UC Merced Frontiers of Biogeography Title Permalink Publication Date

Daniel Gavin, Carl Beierkuhnlein, Stefan Holzheu
Frontiers of Biogeography   unpublished
Ecotonal areas for the two different types of vegetation were extracted and mapped.  ...  Keywords: tropical forest, alternative stable states, forest-fire feedbacks, palaeoecology, phytoliths 8.22 ⚡ General introduction to paleobioDB, an rOpenSci R-package to get fossil data for researchThe  ...  A comparative demographic approach and tree-based methods will provide a first evaluation of speciation patterns in the CFEA.  ... 
fatcat:yqsc6aiisfapldkvksog7w3csm

Proceedings of the 10th International Conference on Ecological Informatics: translating ecological data into knowledge and decisions in a rapidly changing world: ICEI 2018

International Conference On Ecological Informatics, Thüringer Universitäts- Und Landesbibliothek Jena, Jitendra Gaikwad
2019
learning and process modelling, • decision-informing solutions for biodiversity conservation and sustainable ecosystem management in light of global changes.  ...  of complementing monitoring technologies including DNA-barcoding, • sophisticated pattern recognition by deep learning, • advanced exploration of valuable information in 'big data' by means of machine  ...  Modern approaches e.g. fuzzy prediction and multiple fuzzy visualizations, dimensionality reduction and feature engineering algorithms are supported..  ... 
doi:10.22032/dbt.38375 fatcat:qwx5h42r4zdibdhwjxtpcia6oe

Multiple facets of biodiversity: Assembly processes, trait composition, and functionality along tropical elevation gradients

Yvonne Christin Tiede, Farwig, Nina (Prof. Dr.)
2018
Biodiversity provides the basis for species interactions and ecosystem functioning.  ...  In the second chapter, I aimed to reveal assembly processes of tropical tree assemblages in the Andes.  ...  of data.  ... 
doi:10.17192/z2018.0046 fatcat:6c7hwl7xvfcc3ollcoxj2oqcgi
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