Assessment of Populations with Spatially Explicit Dynamics and the Consequences for Marine Protected Areas

dc.contributor.advisorWilberg, Michaelen_US
dc.contributor.authorBarkman, Jennifer Sharien_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.description.abstractSpatial processes can have important consequences in the population dynamics of fishes and marine invertebrates. Therefore fisheries management should consider space in the techniques used to understand population dynamics. The purpose of this thesis was to investigate spatial dynamics of fish populations in Maryland's coastal bays (Chapter 2) and evaluate effects of spatial management (in the form of marine protected areas (MPAs)) on accuracy of abundance estimates (Chapter 3). In Chapter 2, I examined trawl survey data from Maryland's coastal bays to estimate trends in relative abundance of four commonly caught fish species using a generalized linear model that allowed region specific estimates. Species showed different responses in the two regions, but trends over time were not related to local habitat variables. In chapter 3, I examined the effects of an MPA on the accuracy and bias of estimates from spatially aggregate and explicit surplus production models (SPMs) using a simulation experiment. I found that spatially-explicit SPMs produced more accurate estimates of biomass than spatially-aggregate SPMs, and that larger MPAs produced more accurate estimates than smaller MPAs.en_US
dc.subject.pqcontrolledFisheries and Aquatic Sciencesen_US
dc.subject.pqcontrolledEnvironmental managementen_US
dc.subject.pquncontrolledIndex Standardizationen_US
dc.subject.pquncontrolledLong-Term Surveyen_US
dc.subject.pquncontrolledMarine Protected Areaen_US
dc.subject.pquncontrolledRelative Abundanceen_US
dc.subject.pquncontrolledStock Assessmenten_US
dc.subject.pquncontrolledSurplus Production Modelen_US
dc.titleAssessment of Populations with Spatially Explicit Dynamics and the Consequences for Marine Protected Areasen_US


Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
480.53 KB
Adobe Portable Document Format