(Upload on December 16 2012) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
Every year, the content of lecture is subjected to modification. Here, all the content I have lectured so far is summarized. The lecture titles were Ecosystem Structure [Advanced Lecure in Regional planning II during 1996 and 1999, Landscape Ecology during 2000 and 2002, and Advanced lecture in Environmental Conservation during 2005 and the present (see the summary of beadroll).
Expected background: Knowing "fundamental ecology" and/or related subjects
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What is this lecture?
Case of Trillium (Ref. T. smallii ) |
Metapopulation
Case: Silver-studded blue butterfly (Plejebus argus) in North Wales |
Ecosystem (or biosystem) Ecosystem damages by the 2000 eruptions on Mount Usu Definitions and criteria of plant community Flora (floristic composition) - Ex. Mount Koma Vegetation physiognomy
Strata (sg. stratum)
Distribution correlated with environment Plant community dynamics = spatial and temporal patterns The problems on pattern and scale in ecology Methods Data characteristics - scales and attributes
Qualitative and quantitative data Measurement scales: Norminal, ordinal, interval and ratio
Restriction of statistical tests due to data quality Complex dynamics in ecology
Toposequence, chronosequence, and permanent plot
Soil moisture (or water depth) gradient
Case: Fire history → Advantages and disadvantages on chronosequence Permanent plot and Long-term ecological research sites
Why are plant communities important for restoration? Scaling from large to small Scale-dependent factor (environmental gradient) Case. Vegetation in gullies near Kolyma River |
Scale-dependent interactions
Scale-dependent interactions and community structure on cobble beaches Global (biome) > Regional > Habitat > Microhabitat Biome: Precipitation and temperature World (Biome) Plant functional types (PFTs) and species attributes
Inductive method vs deductive method Asia Vegetation map Japan
Climate (temperature and precipitation) Hokkaido
Distribution of Sasa (dwarf bamboo) in Hokkaido
Vegetation map Habitat Dorso-ventral sturcture of plant community on mountians Microhabitat
Case. Pumice Plains on MSH: rill and near-rock |
Extra: Field trip to understand real plants -see the flora list for HUSTEP
Natural disturbance and human disturbance Natural disturbance Floodplain
Case study: Vegetation zonation in Sorachi River Intermediate(-disturbance) hypothesis Relationships between grazing pressure and species richness
Intermediate grazing optimization hypothesis
Effect of pocket gophers on plant community dynamics Soil erosion
Types of soil erosion Forest fire Soil profile (acidic brown forest soil) Fallen-log regeneration
Human disturbance
Military forces: US Air Forces Biological invasion
Alien species
Distribution pattern of the flora in a peri-urban forest: an effect of the city-forest ecotone
Seed source vs environmental factors (elevation, aspect, and slope) - multicolinearity Weed control Effects of reduced pesticide use on flora and fauna in agricultural fields InteractionsDistribution and dispersion
Random, contagious, and regular distribution patterns
Dispersion pattern analysis |
Competition: intera-specific and inter-specific competition
Competition experiment designs Indices of plant-plant competition
On indices of plant-plant competition and their pitfalls Determinants on ecosystem structure with reference to "scale" Environmental gradients, biotic interactions, and disturbance Island BiogeographyPrinciples: distance from mother land and island size
Mother land Ecotone and corridor
Ecotone (on a skislope) Applications of island biogeography to nature conservation
National and quasi-national parks in Hokkaido Restoration ecology
Why are plant communities important for restoration? Landscape ecologyLandscape unit: mega-, macro-, and micro-scale → structure, function, and change
Satoyama (village forest) |
α-diversity, β-diversity, and γ-diversity
α-diversity = within-habitat diversity α-diversity (and γ-diversity)
Type 0: Using number of species = Species richness Species richness
Case: Species richness in Kinabalu Shannon-Wiener diversity index (H') - representative T2
Bit Selection of parameter for diversity
Density vs cover. Ex. Plant communities on Mount Usu |
Resource patitioning hypothesis
Niche breadth and overlap Consider data characteristics
Types of data transformation β-diversity (between-habitat diversity)
Types of similarity index Similarity matrix
Diamond graph |
Main purposes of multivariate analysis
Classification and ordination Phytosociology
Hierarchy of plant community Clsutering or cluster analysis Cluster analysis
Divisive strategy vs agglomerative strategy Agglomerative strategy
From single-linkage method to average-linkage method
Average-linkage method
Ex 0. A bad example Divisive strategy
Principle Other clustering methods |
Data standardization
Down-weighting or eliminating rare species
Ordination: Indirect and direct ordination
Polar ordination (PO) Case: Chronosequence on skislope vegetation Principal component analysis (PCA)
Eigenvalue and eigenvector
Canonical correspondence analysis (CCA)
Principles Selection of software(s) Bug |
Succession (Contents was changed owing to PC collapse on Dec 15 2005) Classification of successional sere: primary succession (xeric succession, mesic succession), and secondary succession Concept of succession
Life history characteristics, proposed by Grime (1979)
Facilitation Successional paces
Species turnover Wetland succession (mesic succession)
Old-fashioned figure of wetland succession
Sphagnum
Tussocks may maintain species diversity
Tephratrophic mires in Japan
Xeric succession: Chronosequence approach Characteristics of vegetation recovery on Mount Usu Plant sources Immigration
Seed dispersal types |
Vegetative reproduction Polygonum sachalinense and Petasites japonicus var. giganteus
Seed dormancy type (innate and induced dormancy) Triggers on seed germination
Sensitivity of seasonality Methods for the detection of seedbank
Flotation methods with centrifugation Mycorrhiza
Mycorrhizal types: ectomycorrhziae and endomycorrhizae Plant-animal interactions Case study on Mount Koma: Rhus tricocarpa and Jungle Crow FacilitationEnvironments vs interactions
Lupine patches on Mount St. Helens
Equilibrium theory vs non-equilibrium theory |