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Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Go with the flow: geospatial analytics to quantify hydrologic landscape connectivity for passively dispersed microorganisms
Autor Hohl, A.; Václavík, T.; Meentemeyer, R.K.;
Journal / Serie International Journal of Geographical Information Science
Erscheinungsjahr 2014
Department CLE;
Band/Volume 28
Heft 8
Sprache englisch;
POF III (gesamt) T12;
Keywords cost distance; disease; epidemiology; functional connectivity; hydrology; invasion
UFZ Querschnittsthemen RU1
Abstract Understanding the diverse ways that landscape connectivity influences the distribution of microbial species is central to managing the spread and persistence of numerous biological invasions. Here, we use geospatial analytics to examine the degree to which the hydrologic connectivity of landscapes influences the transport of passively dispersed microbes, using the invasive plant pathogen Phytophthora ramorum as a case study. Pathogen occurrence was analyzed at 280 stream baiting stations across a range of watersheds – exposed to variable inoculum pressure – in California over a 7-year period (2004–2010). Using logistic regression, we modeled the probability of pathogen occurrence at a baiting station based on nine environmental variables. We developed a novel geospatial approach to quantify the hydrologic connectivity of host vegetation and inoculum pressure derived from least cost distance analyses in each watershed. We also examined the influence of local environmental conditions within the immediate neighborhood of a baiting station. Over the course of the sampling period, the pathogen was detected at 67 baiting stations associated with coastal watersheds with mild climate conditions, steep slopes, and higher levels of inoculum pressure. At the watershed scale, hydrologic landscape connectivity was a key predictor of pathogen occurrence in streams after accounting for variation in climate and exposure to inoculum. This study illustrates a geospatial approach to modeling the degree to which hydrologic systems play a role in shaping landscape structures conducive for the transport of passively dispersed microbes in heterogeneous watersheds.
ID 14974
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=14974
Hohl, A., Václavík, T., Meentemeyer, R.K. (2014):
Go with the flow: geospatial analytics to quantify hydrologic landscape connectivity for passively dispersed microorganisms
Int. J. Geogr. Inf. Sci. 28 (8), 1626 - 1641