Discussion 1 February 1, 2005

  • Published on

  • View

  • Download

Embed Size (px)


Discussion 1 February 1, 2005. Bioregional Climate. D. Cassidy. Five Year Fire Regime. Long, Large. Constraints. Succession of individual plant species In a prairie. Level of Focus. Time, Space. Root Parasites. Micro organisms. Soil Bacteria. Short, Small. Mechanisms - PowerPoint PPT Presentation


  • Discussion 1

    February 1, 2005

  • Successionof individual plant speciesIn a prairie

    Level of Focus


    Mechanisms (emergent)Root ParasitesSoil Bacteria

    Five Year Fire Regime

    Short,SmallLong, LargeTime, SpaceConstraintsBioregional ClimateD. Cassidy

  • Interior PlateauKnobsInner BluegrassOuter NashvilleBasinLandscape ofFayette County, KYSpatial Scale Temporal ScaleProcesses & CharacteristicsEnvironmentalEconomicSocialC. Read

  • Marie Vicksta

    Species 2

    Species 1






    Natural Mutation rateIntroduced ToxinsIncreased UV radiationSelection pressures



    Determines individuals niche: where it can live, what it can ingest

    Lethal mutationsEnergy cost VS.Selection value

    Energy BudgetCompetitionResource partitioningIsolation

  • Aaron MegquierFOR565, Assignment #101.31.2005Ecoregional landscapeIndividual Stand or PatchGoal: Develop quantifiable measures or indicators for biodiversity that can be measured across ecoregional landscapes.Composition: Species richness and abundance, proportion of native species. Structure: Standing dead trees, coarse woody debris, mixed-age stands, gap formation rates, non-channelized streams, Function: local colonization/extinction rates, NPPSpatial Scale10 ha108 haBiomeFactors supporting biodiversityPotential threats to biodiversityRoad density, invasive species, isolation from other patches, habitat removal/simplification, edge effects, eutrophication of water bodies, Composition: Natural communities present, numbers of RTE species, representativeness of protected areas, extinction rate w/in NRVStructure: Perimeter:area ratio, patch size, riparian buffer strips, migratory routes, landscape connectivity, distribution of seral stages. Function: Large-scale disturbance frequency, nutrient cycling rates, guild persistence, ecological redundancyComposition: Rates of speciationStructure: Physiognomy of dominant vegetation types, geological landform, Function: Temperature and precipitation patterns, solar insolation levelsWidespread persistent pollutants, broad patterns of land-use change, large hydrological modifications, loss of keystone species, fire suppression policy, habitat fragmentation, highly pathogenic invasive speciesRapid changes in temperature and precipitation patterns, loss of dispersal vectors for species migration, massive land-cover conversion by humansTemporal scale is highly non-linear across the diagram and has been left out for this reason. Biodiversity gains at standlevel support the ecoregionEcoregional threats arerealized at the stand levelClimate and landform shapedisturbance regime, species richness, community diversityCumulative stress from lowerlevels may affect long-termviability of biome

  • Beta insect community / landscapeInsect community / patch Insect species / Flower speciesConstraintsHierarchical DiagramClimateMigrationPatch size , Distancebetween patchesFloral resources: pollen, nectarInsect / flower morphologyA. BennettObjective: Compare insect communities between patchesConstraints = RedMechanisms = Green

  • Objective: To Determine How Black Bears are Distributed Across the LandscapeKirsten Kapp: Forest 565Determined by biological and social processes: Climate, Soil type, Management History/TrendsRegionalLandscape


    LANDSCAPE: Forest Cover such as Spruce/Fir, Aspen/Birch, Northern Hardwood, Wetlands, Human Development, AgricultureIdeal habitat includes a diversity of forest types that contain hard mast, soft mast, water sources etcPresence in or use of a particular area (home range) within habitat is dependent on stand characteristics such as food quality and quantity, escape cover, thermal cover, proximity to homes (garbage), other bears, distance to agriculture, edgeBear Home RangeBear Home RangeBear Home RangeAt a finer scale, presence of fallen trees (den sites), large trees with furrowed bark (for escape/cubs), reproductive success of individual trees (acorn crop) determine temporal usable habitatRegional Black Bear Range Defined loosely as forested landTreeTreeTree


    TreeTreeAcorn CropThermal CoverDen SiteTemporalSpatialEscape

  • Objective: What policy mechanisms will motivate NIPFs (non-industrial private forest owners) to manage across property boundaries?Institutions:Policy making bodies, governments (ex. laws)Private organizations or cooperativesIndividual NIPFs:Personal land objectives, ethics, beliefsIncome from land, family influenceNeighbors:Collective actionCommon objectives, trust, investmentEcosystem managementR.Gass


View more >