Index Catalog // ScholarsArchive@OSU

The effect of spatial configuration of habitat capacity on β diversity

Creator:: Dong, X., Muneepeerakul, R., Olden, J. D., and Lytle, D. A.
Abstract:: Patterns of β diversity are commonly used to infer underlying ecological processes. In this study, we examined the effect of spatial configuration of habitat capacity on different metrics of β diversity, i.e., β diversity measured as turnover and as variation. For β diversity as turnover, a monotonic species spatial turnover...
Resource Type:: Article
Full Text:: ., Muneepeerakul, R., Olden, J. D., & Lytle, D. A. (2015). The effect of spatial configuration of habitat capacity

Effects of stream topology on ecological community results from neutral models

Creator:: White, Denis and Rashleigh, Brenda
Abstract:: While neutral theory and models have stimulated considerable literature, less well investigated is the effect of topology on neutral metacommunity model simulations. We implemented a neutral metacommunity model using two different stream network topologies, a widely branched network (wide tree) and a narrowly branched network (high tree), both represented as...
Resource Type:: Article
Full Text:: ., Weiser, M.D., 2006. Empirical evaluation of neutral theory. Ecology 87, 1411–1423. Muneepeerakul, R

Optimal spatial-dynamic resource allocation facing uncertainty : integrating economics and ecology for invasive species policy

Creator:: Hall, Kim M.
Abstract:: The spatial and temporal behavior of invasive species spread implies that optimal management strategies involve decisions over space and time. Dispersal and propagule pressure are two primary drivers of the spatial-temporal ecological process of species invasion. In the case of riparian communities, stream flow drives the dispersal of vegetation propagules....
Resource Type:: Dissertation
Full Text:: (Muneepeerakul, Weitz et al. 2007). Subsequent to dispersal, propagules must be able to establish in a site

Modelling dendritic ecological networks in space: an integrated network perspective

Creator:: Peterson, Erin E., Ver Hoef, Jay M., Isaak, Dan J., Falke, Jeffrey A., Fortin, Marie-Jos ee, Jordan, Chris E., McNyset, Kristina, Monestiez, Pascal, Ruesch, Aaron S., Sengupta, Aritra, Som, Nicholas, Steel, E. Ashley, Theobald, David M., Torgersen, Christian E., and Wenger, Seth J.
Abstract:: Dendritic ecological networks (DENs) are a unique form of ecological networks that exhibit a dendritic network topology (e.g. stream and cave networks or plant architecture). DENs have a dual spatial representation; as points within the network and as points in geographical space. Consequently, some analytical methods used to quantify relationships...
Resource Type:: Article
Full Text:: processes such as the rate of dispersal between habitat patches (Muneepeerakul et al. 2008) or a

Dispersal strength determines meta-community structure in a dendritic riverine network

Creator:: Cañedo-Argüelles, Miguel, Boersma, Kate S., Bogan, Michael T., Olden, Julian D., Phillipsen, Ivan, Schriever, Tiffany A., and Lytle, David A.
Abstract:: AIM: Meta-community structure is a function of both local (site-specific) and regional (landscape-level) ecological factors, and the relative importance of each may be mediated by the dispersal ability of organisms. Here, we used aquatic invertebrate communities to investigate the relationship between local and regional factors in explaining distance decay relationships...
Resource Type:: Article
Full Text:: 125 implications for dispersal and resulting meta-community structure (Muneepeerakul et 126 al

PAC Optimal MDP Planning with Application to Invasive Species Management

Creator:: Taleghan, Majid Alkaee, Dietterich, Thomas G., Crowley, Mark, Hall, Kim, and Albers, H. Jo
Abstract:: In a simulator-defined MDP, the Markovian dynamics and rewards are provided in the form of a simulator from which samples can be drawn. This paper studies MDP planning algorithms that attempt to minimize the number of simulator calls before terminating and outputting a policy that is approximately optimal with high...
Resource Type:: Article
Full Text:: state distribution. Let the MDP be defined by M = 〈S,A,P,R,γ,P0〉, where S is a finite set of (discrete

Simulator-Defined MDP Planning with Applications in Natural Resource Management

Creator:: Alkaee Taleghan, Majid
Abstract:: This work is inspired by problems in natural resource management centered on the challenge of invasive species. Computing optimal management policies for maintaining ecosystem sustainable is challenging. Many ecosystem management problems can be formulated as MDP (Markov Decision Process) planning problems. In a simulator-defined MDP, the Markovian dynamics and rewards...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 4.6 Plots of V UCB(λ ν lower) R , VR − V UCB(λνlower) R , and V UCB(λνlower) C on the vertical

Drought, dispersal, and community dynamics in arid-land streams

Creator:: Bogan, Michael T.
Abstract:: Understanding the mechanisms that regulate local species diversity and community structure is a perennial goal of ecology. Local community structure can be viewed as the result of numerous local and regional processes; these processes act as filters that reduce the regional species pool down to the observed local community. In...
Resource Type:: Dissertation
Full Text:: . Invertebrate taxa which had high Pearson’s correlations (r > 0.5) with either the non- metric

Riverscape genetics of Oncorhynchus tshawytscha (Chinook salmon) in Siletz River, OR

Creator:: Davis, Chanté D.
Abstract:: Traditional analysis in population genetics evaluates differences among groups of individuals and, in some cases, considers the effects of distance or potential barriers to gene flow. However, many forces may shape genetic variation of organisms in riverine systems. Similarly complex research linking habitat heterogeneity and configuration to genetic structure has...
Resource Type:: Dissertation
Full Text:: )). Analysis was carried out using R package IGRAPH (R core team 2016). ...................... 108 Figure

The Benefits of Time: Characterizing Intra-and Inter-Annual Variability in Oregon Wetland Ecosystems Using the Landsat Spectral-Temporal Domain

Creator:: Fickas, Kate C.
Abstract:: The use of Landsat data has historically been constrained to spectral and spatial information derived from a carefully selected image or set of images. However, free and open access to Landsat imagery combined with advances in data storage and computing are revolutionizing how the Landsat temporal domain is used to...
Resource Type:: Dissertation

ScholarsArchive@OSU

The effect of spatial configuration of habitat capacity on β diversity

Effects of stream topology on ecological community results from neutral models

Optimal spatial-dynamic resource allocation facing uncertainty : integrating economics and ecology for invasive species policy

Modelling dendritic ecological networks in space: an integrated network perspective

Dispersal strength determines meta-community structure in a dendritic riverine network

PAC Optimal MDP Planning with Application to Invasive Species Management

Simulator-Defined MDP Planning with Applications in Natural Resource Management

Drought, dispersal, and community dynamics in arid-land streams

Riverscape genetics of Oncorhynchus tshawytscha (Chinook salmon) in Siletz River, OR

The Benefits of Time: Characterizing Intra-and Inter-Annual Variability in Oregon Wetland Ecosystems Using the Landsat Spectral-Temporal Domain

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search