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Contrasting influences of stormflow and baseflow pathways on nitrogen and phosphorus export from an urban watershed

Journal Articles & Books
december, 2014
United States of America

Eutrophication of urban surface waters from excess nitrogen (N) and phosphorus (P) inputs remains a major issue in water quality management. Although much research has focused on understanding loading of nutrients from storm events, there has been little research to understand the contribution of baseflow, the water moving through storm drains between rainfall events. We investigated the relative contributions of baseflow versus stormflow for loading of water and nutrients (various forms of N and P) by the storm drain network in six urban sub-watersheds in St. Paul, MN, USA.

Designing food and habitat trees for urban koalas: graft compatibility, survival and height of tall eucalypt species grafted onto shorter rootstocks

Journal Articles & Books
december, 2014

The Corymbia and Eucalyptus species eaten by koalas are generally large trees, but these are often unpopular with urban landowners and councils because of the dangers of limbs falling from a great height. We aimed to develop shorter koala food and habitat trees for urban areas by heterografting tall eucalypt species onto rootstocks of shorter species and comparing their survival and growth with homografted trees and control ungrafted trees.

influence of land use patterns on water quality at multiple spatial scales in a river system

Journal Articles & Books
december, 2014
China

The influence of land use patterns on water quality in a river system is scale‐dependent. In this study, a four‐order hierarchical arrangement method was used to select water sampling sites and to delineate sub‐basins in the Daliao River Basin, China. The 20 sub‐basins were classified into four spatial scales that represented four different stream orders. Pearson correlation analysis was used to quantify relationships between land use composition and the river's physical‐chemical variables for all samples collected.

Vegetation Monitoring to Guide Management Decisions in Miami's Urban Pine Rockland Preserves

Journal Articles & Books
december, 2014

We developed a monitoring program to assess the health of urban fragments of pine rockland, a globally critically imperiled, fire-dependent plant community, in order to provide feedback for adaptive land management. Our results showed negative effects of fire exclusion, including low native herb and grass cover, excessive leaf litter accumulation, and high densities of native trees in most of the twelve preserves sampled.

Exploratory Landscape Metrics for Agricultural Sustainability

Journal Articles & Books
december, 2014

Socioeconomic growth and urban change have been an increasing concern for decision makers in recent decades. The monitoring, mapping, and analysis of agricultural land use change, especially in areas where urban change has been high, is crucial. The collision between traditional economic activities related to agriculture in tourist areas such as the Algarve and current demand for tourism infrastructures in urban regions is also leading to loss of economic activity.

Spatial and temporal patterns of range expansion of white‐winged doves in the USA from 1979 to 2007

Journal Articles & Books
december, 2014
United States of America
Northern America

AIM: The geographical expansion of white‐winged doves (Zenaida asiatica) in North America has attracted the attention of biologists and sportsmen because of their recreational and aesthetic value; however, data on factors driving the spatial spread of this species are lacking. We examined spatial and temporal patterns of range expansion for white‐winged doves along the northern edge of their geographical range from 1979 to 2007 and used a dynamic occupancy model to estimate when and where doves would be found along an expansion gradient. LOCATION: Southern half of the USA.

Humans, bees, and pollination services in the city: the case of Chicago, IL (USA)

Journal Articles & Books
december, 2014
United States of America

Despite the global trend in urbanization, little is known about patterns of biodiversity or provisioning of ecosystem services in urban areas. Bee communities and the pollination services they provide are important in cities, both for small-scale urban agriculture and native gardens. To better understand this important ecological issue, we examined bee communities, their response to novel floral resources, and their potential to provide pollination services in 25 neighborhoods across Chicago, IL (USA).

Landscape-ecological development conditions of town Bojnice

Journal Articles & Books
december, 2014
Slovakia

Nowadays it is necessary to process geographic data about landscape in a digital way. It is possible to analyse selected data and approach to decision and proposition-making process of landscaping based on analysis of these results. The LANDEP methodics provides us verified procedures of primary landscape structures assesment and landscaping. Digitalization of selected landscape elements increases processing efficiency, mainly for time reasons. Creation of complex landscape plans of cadastral areas at Slovakia should become a basic priority of every commune.