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  • 1
    Call number: 9783030019891 (e-book)
    Description / Table of Contents: This book provides a foundation for modern applied ecology. Much of current ecology research and conservation addresses problems across landscapes and regions, focusing on spatial patterns and processes. This book is aimed at teaching fundamental concepts and focuses on learning-by-doing through the use of examples with the software R. It is intended to provide an entry-level, easily accessible foundation for students and practitioners interested in spatial ecology and conservation
    Type of Medium: 12
    Pages: 1 Online-Ressource (xviii, 523 Seiten) , Illustrationen
    Edition: Springer eBook Collection. Biomedical and Life Sciences
    ISBN: 9783030019891 , 978-3-030-01989-1
    Language: English
    Note: Contents 1 Introduction to Spatial Ecology and Its Relevance for Conservation 1.1 What Is Spatial Ecology? 1.2 The Importance of Space in Ecology 1.3 The Importance of Space in Conservation 1.4 The Growth of Frameworks for Spatial Modeling 1.5 The Path Ahead References Part I Quantifying Spatial Pattern in Ecological Data 2 Scale 2.1 Introduction 2.2 Key Concepts and Approaches 2.2.1 Scale Defined and Clarified 2.2.2 Why Is Spatial Scale Important? 2.2.3 Multiscale and Multilevel Quantitative Problems 2.2.4 Spatial Scale and Study Design 2.3 Examples in R 2.3.1 Packages in R 2.3.2 The Data 2.3.3 A Simple Simulated Example 2.3.4 Multiscale Species Response to Land Cover 2.4 Next Steps and Advanced Issues 2.4.1 Identifying Characteristic Scales Beyond Species–Environment Relationships 2.4.2 Sampling and Scale 2.5 Conclusions References 3 Land-Cover Pattern and Change 3.1 Introduction 3.2 Key Concepts 3.2.1 Land Use Versus Land Cover 3.2.2 Conceptual Models for Land Cover and Habitat Change 3.2.3 Habitat Loss and Fragmentation 3.2.4 Quantifying Land-Cover Pattern 3.3 Examples in R 3.3.1 Packages in R 3.3.2 The Data 3.3.3 Quantifying Land-Cover Variation at Different Scales 3.3.4 Simulating Land Cover: Neutral Landscapes 3.4 Next Steps and Advanced Issues 3.4.1 Testing for Pattern Differences Between Landscapes 3.4.2 Land-Cover Quantification via Image Processing 3.4.3 Categorical Versus Continuous Metrics 3.5 Conclusions References 4 Spatial Dispersion and Point Data 4.1 Introduction 4.2 Key Concepts and Approaches 4.2.1 Characteristics of Point Patterns 4.2.2 Summary Statistics for Point Patterns 4.2.3 Common Statistical Models for Point Patterns 4.3 Examples in R 4.3.1 Packages in R 4.3.2 The Data 4.3.3 Creating Point Pattern Data and Visualizing It 4.3.4 Univariate Point Patterns 4.3.5 Marked Point Patterns 4.3.6 Inhomogeneous Point Processes and Point Process Models 4.3.7 Alternative Null Models 4.3.8 Simulating Point Processes 4.4 Next Steps and Advanced Issues 4.4.1 Space-Time Analysis 4.4.2 Replicated Point Patterns 4.5 Conclusions References 5 Spatial Dependence and Autocorrelation 5.1 Introduction 5.2 Key Concepts and Approaches 5.2.1 The Causes of Spatial Dependence 5.2.2 Why Spatial Dependence Matters 5.2.3 Quantifying Spatial Dependence 5.3 Examples in R 5.3.1 Packages in R 5.3.2 The Data 5.3.3 Correlograms 5.3.4 Variograms 5.3.5 Kriging 5.3.6 Simulating Spatially Autocorrelated Data 5.3.7 Multiscale Analysis 5.4 Next Steps and Advanced Issues 5.4.1 Local Spatial Dependence 5.4.2 Multivariate Spatial Dependence 5.5 Conclusions References 6 Accounting for Spatial Dependence in Ecological Data 6.1 Introduction 6.2 Key Concepts and Approaches 6.2.1 The Problem of Spatial Dependence in Ecology and Conservation 6.2.2 The Generalized Linear Model and Its Extensions 6.2.3 General Types of Spatial Models 6.2.4 Common Models that Account for Spatial Dependence 6.2.5 Inference Versus Prediction 6.3 Examples in R 6.3.1 Packages in R 6.3.2 The Data 6.3.3 Models that Ignore Spatial Dependence 6.3.4 Models that Account for Spatial Dependence 6.4 Next Steps and Advanced Issues 6.4.1 General Bayesian Models for Spatial Dependence 6.4.2 Detection Errors and Spatial Dependence 6.5 Conclusions References Part II Ecological Responses to Spatial Pattern and Conservation 7 Species Distributions 7.1 Introduction 7.2 Key Concepts and Approaches 7.2.1 The Niche Concept 7.2.2 Predicting Distributions or Niches? 7.2.3 Mechanistic Versus Correlative Distribution Models 7.2.4 Data for Correlative Distribution Models 7.2.5 Common Types of Distribution Modeling Techniques 7.2.6 Combining Models: Ensembles 7.2.7 Model Evaluation 7.3 Examples in R 7.3.1 Packages in R 7.3.2 The Data 7.3.3 Prepping the Data for Modeling 7.3.4 Contrasting Models 7.3.5 Interpreting Environmental Relationships 7.3.6 Model Evaluation 7.3.7 Combining Models: Ensembles 7.4 Next Steps and Advanced Issues 7.4.1 Incorporating Dispersal 7.4.2 Integrating Multiple Data Sources 7.4.3 Dynamic Models 7.4.4 Multi-species Models 7.4.5 Sampling Error and Distribution Models 7.5 Conclusions References 8 Space Use and Resource Selection 8.1 Introduction 8.2 Key Concepts and Approaches 8.2.1 Distinguishing Among the Diversity of Habitat-Related Concepts and Terms 8.2.2 Habitat Selection Theory 8.2.3 General Types of Habitat Use and Selection Data 8.2.4 Home Range and Space Use Approaches 8.2.5 Resource Selection Functions at Different Scales 8.3 Examples in R 8.3.1 Packages in R 8.3.2 The Data 8.3.3 Prepping the Data for Modeling 8.3.4 Home Range Analysis 8.3.5 Resource Selection Functions 8.4 Next Steps and Advanced Issues 8.4.1 Mechanistic Models and the Identification of Hidden States 8.4.2 Biotic Interactions 8.4.3 Sampling Error and Resource Selection Models 8.5 Conclusions References 9 Connectivity 9.1 Introduction 9.2 Key Concepts and Approaches 9.2.1 The Multiple Meanings of Connectivity 9.2.2 The Connectivity Concept 9.2.3 Factors Limiting Connectivity 9.2.4 Three Common Perspectives on Quantifying Connectivity 9.3 Examples in R 9.3.1 Packages in R 9.3.2 The Data 9.3.3 Functional Connectivity Among Protected Areas for Florida Panthers 9.3.4 Patch-Based Networks and Graph Theory 9.3.5 Combining Connectivity Mapping with Graph Theory 9.4 Next Steps and Advanced Issues 9.4.1 Connectivity in Space and Time 9.4.2 Individual-Based Models 9.4.3 Diffusion Models 9.4.4 Spatial Capture–Recapture 9.5 Conclusions References 10 Population Dynamics in Space 10.1 Introduction 10.2 Key Concepts and Approaches 10.2.1 Foundational Population Concepts 10.2.2 Spatial Population Concepts 10.2.3 Population Viability Analysis 10.2.4 Common Types of Spatial Population Models 10.3 Examples in R 10.3.1 Packages in R 10.3.2 The Data 10.3.3 Spatial Correlation and Synchrony 10.3.4 Metapopulation Metrics 10.3.5 Estimating Colonization–Extinction Dynamics 10.3.6 Projecting Dynamics 10.3.7 Metapopulation Viability and Environmental Change 10.4 Next Steps and Advanced Issues 10.4.1 Spatial Population Matrix Models 10.4.2 Diffusion and Spatial Dynamics 10.4.3 Agent-Based Models 10.4.4 Integrated Population Models 10.5 Conclusions References 11 Spatially Structured Communities 11.1 Introduction 11.2 Key Concepts and Approaches 11.2.1 Spatial Community Concepts 11.2.2 Common Approaches to Understanding Community–Environment Relationships 11.2.3 Spatial Models for Communities 11.3 Examples in R 11.3.1 Packages in R 11.3.2 The Data 11.3.3 Modeling Communities and Extrapolating in Space 11.3.4 Spatial Dependence in Communities 11.3.5 Community Models with Explicit Accounting for Space 11.4 Next Steps and Advanced Issues 11.4.1 Decomposition of Space–Environment Effects 11.4.2 Accounting for Dependence Among Species 11.4.3 Spatial Networks 11.5 Conclusions References 12 What Have We Learned? Looking Back and Pressing Forward 12.1 The Impact of Spatial Ecology and Conservation 12.2 Looking Forward: Frontiers for Spatial Ecology and Conservation 12.3 Where to Go from Here for Advanced Spatial Modeling? 12.4 Beyond R 12.5 Conclusions References Appendix A: An Introduction to R Index
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  • 2
    Publication Date: 1995-09-01
    Description: Diversity of passerine birds and mammals was estimated in well-drained areas located at proximity of the hydroelectric reservoir La Grande-3, where natural fire regime still prevails in the absence of forest exploitation. Forest stands were divided up into four post-fire stages: (i) recent burns (4 years old), (ii) shrubs (25 years old), (iii) young forests (50 years old), and (iv) mature forests (≥71 years old). Richness and species diversity were highest in middle stages, in shrubs and young forests. The degree of opening seems to have affected more the composition of bird communities than stand age. Some bird species, typical of shrub stands, in particular white-crowned sparrow (Zonotrichialeucophrys Forster), Lincoln's sparrow (Melospizalincolnii Audubon), and alder flycatcher (Empidonaxalnorum Brewster), appeared after the falling of dead trees, ≈15 years after fire, and disappeared progressively as forests matured. Deer mice (Peromyscusmaniculatus Wagner), moose (Alcesalces L.), and black bears (Ursusamericanus Pallas) were more common at the beginning of succession, whereas northern red-backed voles (Clethrionomysgapperi Vigors) and caribou (Rangifertarandus L.) were typical of late stages. Mammal presence was mostly associated to their feeding requirements. Fire creates a mosaic of forest stands through periodic killing of trees in the north of the boreal forest, which contributes to maintain regional wildlife diversity; its suppression would reduce biodiversity.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 3
    ISSN: 1432-1939
    Keywords: Key words Coastal dune ecosystems ; Ion exchange membrane spikes ; Soil nitrogen availability ; Soil resource heterogeneity ; Spatial statistics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract There are few studies in natural ecosystems on how spatial maps of soil attributes change within a growing season. In part, this is due to methodological difficulties associated with sampling the same spatial locations repeatedly over time. We describe the use of ion exchange membrane spikes, a relatively nondestructive way to measure how soil resources at a given point in space fluctuate over time. We used this method to examine spatial patterns of soil ammonium (NH+ 4) and nitrate (NO− 3) availability in a mid-successional coastal dune for four periods of time during the growing season. For a single point in time, we also measured soil NH+ 4 and NO− 3 concentrations from soil cores collected from the mid-successional dune and from an early and a late successional dune. Soil nitrogen concentrations were low and highly variable in dunes of all ages. Mean NH+ 4 and NO− 3 concentrations increased with the age of the dune, whereas coefficients of variation for NH+ 4 and NO− 3 concentrations decreased with the age of the dune. Soil NO− 3 concentration showed strong spatial structure, but soil NH+ 4 concentration was not spatially structured. Plant-available NH+ 4 and NO− 3 showed relatively little spatial structure: only NO− 3 availability in the second sampling period had significant patch structure. Spatial maps of NH+ 4 and NO− 3 availability changed greatly over time, and there were few significant correlations among soil nitrogen availability at different points in time. NO− 3 availability in the second sampling period was highly correlated (r = 0.90) with the initial soil NO− 3 concentrations, providing some evidence that patches of plant-available NO− 3 may reappear at the same spatial locations at irregular points in time.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 300-301 (1995), S. 1-16 
    ISSN: 1573-5117
    Keywords: Experiments ; spatial patterns ; limnology ; oceanography ; philosophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé L'auteur passe en revue quelques-unes des pratiques habituelles en limnologie et en océanographie et discute des possibilités d'amélioration dans ces domaines. L'examen de 253 articles parus dans le périodique Limnology and Oceanography en 1980, 1985 et 1990 montre que la majorité de ceux-ci (〉60%) est à dominante descriptive, et que l'approche expérimentale n'est utilisée que dans 30% des cas. Parmi les 27% d'articles présentant des modèles, seuls 3% valident ces modèles en utilisant des données de terrain. Un seul parmi les 253 articles présente des critères biologiques de rejet des hypothèses. La discussion porte sur l'importance des études descriptives en limnologie et en océanographie, l'emploi des techniques numériques pour détecter des phénomènes spatio-temporels dans les données, la signification du réductionnisme dans les sciences aquatiques, l'introduction d'hypothèses ad hoc, les critères de choix des sites d'études, des stations et des échantillonnages dans les études littorales et pélagiques, et les stratégies valables lorsqu'une approche expérimentale ne peut être employée en raison de facteurs environnementaux non contrôlables.
    Notes: Abstract This paper reviews some of the current practices in limnology and oceanography and discusses ways to improve our habits in these fields. A survey of all 253 articles published in the journal Limnology and Oceanography in 1980, 1985, and 1990 indicates that the majority of papers (〉60%) were predominantly descriptive, only about 30% used an experimental approach. Of the 27% articles presenting models, only 3% validated these models using field data. Only one out of 253 papers presented biological criteria to reject hypotheses. We discuss the significance of descriptive studies in the fields of limnology and oceanography, the use of numerical techniques to detect spatio-temporal patterns in the data, the significance of reductionism in aquatic sciences, the introduction of ad hoc hypotheses, the problem of selecting study sites, stations, and sample locations in shore and pelagic studies, and strategies available when an experimental approach cannot be used because environmental factors cannot be controlled.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant ecology 83 (1989), S. 209-222 
    ISSN: 1573-5052
    Keywords: Kriging ; Pattern analysis ; Reliability ; Sampling theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Using spatial analysis methods such as spatial autocorrelation coefficients (Moran's I and Geary's c) and kriging, we compare the capacity of different sampling designs and sample sizes to detect the spatial structure of a sugar-maple (Acer saccharum L.) tree density data set gathered from a secondary growth forest of southwestern Québec. Three different types of subsampling designs (random, systematic and systematic-cluster) with small sample sizes (50 and 64 points), obtained from this larger data set (200 points), are evaluated. The sensitivity of the spatial methods in the detection and the reconstruction of spatial patterns following the application of the various subsampling designs is discussed. We find that the type of sampling design plays an important role in the capacity of autocorrelation coefficients to detect significant spatial autocorrelation, and in the ability to accurately reconstruct spatial patterns by kriging. Sampling designs that contain varying sampling steps, like random and systematic-cluster designs, seem more capable of detecting spatial structures than a systematic design.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Plant ecology 80 (1989), S. 107-138 
    ISSN: 1573-5052
    Keywords: Ecological theory ; Mantel test ; Mapping ; Model ; Spatial analysis ; Spatial autocorrelation ; Vegetation map
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The spatial heterogeneity of populations and communities plays a central role in many ecological theories, for instance the theories of succession, adaptation, maintenance of species diversity, community stability, competition, predator-prey interactions, parasitism, epidemics and other natural catastrophes, ergoclines, and so on. This paper will review how the spatial structure of biological populations and communities can be studied. We first demonstrate that many of the basic statistical methods used in ecological studies are impaired by autocorrelated data. Most if not all environmental data fall in this category. We will look briefly at ways of performing valid statistical tests in the presence of spatial autocorrelation. Methods now available for analysing the spatial structure of biological populations are described, and illustrated by vegetation data. These include various methods to test for the presence of spatial autocorrelation in the data: univariate methods (all-directional and two-dimensional spatial correlograms, and two-dimensional spectral analysis), and the multivariate Mantel test and Mantel correlogram; other descriptive methods of spatial structure: the univariate variogram, and the multivariate methods of clustering with spatial contiguity constraint; the partial Mantel test, presented here as a way of studying causal models that include space as an explanatory variable; and finally, various methods for mapping ecological variables and producing either univariate maps (interpolation, trend surface analysis, kriging) or maps of truly multivariate data (produced by constrained clustering). A table shows the methods classified in terms of the ecological questions they allow to resolve. Reference is made to available computer programs.
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2022-05-25
    Description: Author Posting. © American Institute of Biological Sciences, 2005. This article is posted here by permission of American Institute of Biological Sciences for personal use, not for redistribution. The definitive version was published in BioScience 55 (2005): 501–510, doi:10.1641/0006-3568(2005)055[0501:CIEACM]2.0.CO;2.
    Description: Creative approaches at the interface of ecology, statistics, mathematics, informatics, and computational science are essential for improving our understanding of complex ecological systems. For example, new information technologies, including powerful computers, spatially embedded sensor networks, and Semantic Web tools, are emerging as potentially revolutionary tools for studying ecological phenomena. These technologies can play an important role in developing and testing detailed models that describe real-world systems at multiple scales. Key challenges include choosing the appropriate level of model complexity necessary for understanding biological patterns across space and time, and applying this understanding to solve problems in conservation biology and resource management. Meeting these challenges requires novel statistical and mathematical techniques for distinguishing among alternative ecological theories and hypotheses. Examples from a wide array of research areas in population biology and community ecology highlight the importance of fostering synergistic ties across disciplines for current and future research and application.
    Description: This paper is the result of a National Science Foundation (NSF) workshop on quantitative environmental and integrative biology (DEB-0092081). J. L. G. would like to acknowledge financial support from the NSF (DEB-0107555).
    Keywords: Ecological complexity ; Quantitative conservation biology ; Cyberinfrastructure ; Metadata ; Semantic Web
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: 577104 bytes
    Format: application/pdf
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  • 8
    Publication Date: 2016-07-01
    Description: The fragmentation and loss of old-growth forest has led to the decline of many forest-dwelling species that depend on old-growth forest as habitat. Emblematic of this issue in many areas of the managed boreal forest in Canada is the threatened woodland caribou (Rangifer tarandus caribou (Gmelin, 1788)). We develop a methodology to help determine when and how timber can be harvested to best satisfy both industrial timber supply and woodland caribou habitat requirements. To start, we use least-cost paths based on graph theory to determine the configuration of woodland caribou preferred habitat patches. We then developed a heuristic procedure to schedule timber harvesting based on a trade-off between merchantable wood volume and the remaining amount of habitat and its connectivity during a planning cycle. Our heuristic can attain 84% of the potential woodland caribou habitat that would be available in the absence of harvesting at the end of a 100 year planning horizon. Interestingly, this is more than that which is attained by the current plan (50%) and a harvesting plan that targets high volume stands (32%). Our results indicate that our heuristic procedure (i.e., an ecologically tuned optimization approach) may better direct industrial activities to improve old-growth habitat while maintaining specified timber production levels.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 9
    Publication Date: 2004-02-01
    Description: At the landscape scale, one of the key indicators of sustainable forest management is the age-class distribution of stands, since it provides a coarse synopsis of habitat potential, structural complexity, and stand volume, and it is directly modified by timber extraction and wildfire. To explore the consequences of several landscape-scale boreal forest management strategies on age-class structure in the Mauricie region of Quebec, we used spatially explicit simulation modelling. Our study investigated three different harvesting strategies (the one currently practiced and two different strategies to maintain late seral stands) and interactions between fire and harvesting on stand age-class distribution. We found that the legacy of initial forested age structure and its spatial configuration can pose short- (
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 10
    Publication Date: 1996-06-01
    Description: We used tree-ring chronologies from sugar maple (Acersaccharum Marsh.) stands showing various degrees of dieback (i.e., 16 sugar maple chronologies from healthy trees and 11 from damaged trees), distributed throughout the species range in southern Quebec, to analyze the spatial extent and timing of the recent sugar maple decline. Furthermore, six tree-ring chronologies of American beech (Fagusgrandifolia Ehrh.) from six damaged sugar maple stands were used to compare for differential responses associated with factors such as insect defoliation (from the forest tent caterpillar, Malacosomadisstria Hbn., for which American beech is a nonpreferred species), drought, and other climatic events. It was found that several small-scale drought-induced disturbances occurred repetitively over the last 100 years in the western part of the species range in southern Quebec. Most sugar maple chronologies from stands located west, north, and south of Québec City also show extreme narrow tree rings, indicating the incidence of three large and deep growth depressions from the early to mid-1910s, mid-1950s, and early 1980s. The factors explaining the large growth depression of dominant sugar maple of the early 1980s, in the region where the 1980s maple decline was the most severe, are likely associated with the synergistic influence of drought and insect defoliators. The recovery of sugar maple stands from the 1980s growth decline emphasizes the positive responsiveness of the robust native trees to frequent natural disturbances. The 1980s maple decline corresponds to the category of natural disturbances affecting stand dynamics by the combination of events such as drought and insect infestations, and possibly (but to a minor extent) winter thaw-frost, which has yet to be demonstrated, rather than by anthropogenic pollution.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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