11 research outputs found
Hurricane impacts on a pair of coastal forested watersheds: implications of selective hurricane damage to forest structure and streamflow dynamics
Hurricanes are infrequent but influential disruptors of ecosystem processes
in the southeastern Atlantic and Gulf coasts. Every southeastern forested
wetland has the potential to be struck by a tropical cyclone. We examined the
impact of Hurricane Hugo on two paired coastal South Carolina watersheds in
terms of streamflow and vegetation dynamics, both before and after the
hurricane's passage in 1989. The study objectives were to quantify the
magnitude and timing of changes including a reversal in relative
streamflow difference between two paired watersheds, and to examine the
selective impacts of a hurricane on the vegetative composition of the forest.
We related these impacts to their potential contribution to change watershed
hydrology through altered evapotranspiration processes. Using over 30 years of monthly rainfall and streamflow data we showed that there was a
significant transformation in the hydrologic character of the two watersheds
– a transformation that occurred soon after the hurricane's passage. We
linked the change in the rainfall–runoff relationship to a catastrophic
change in forest vegetation due to selective hurricane damage. While both
watersheds were located in the path of the hurricane, extant forest structure
varied between the two watersheds as a function of experimental forest
management techniques on the treatment watershed. We showed that the primary
damage was to older pines, and to some extent larger hardwood trees. We
believe that lowered vegetative water use impacted both watersheds with
increased outflows on both watersheds due to loss of trees following
hurricane impact. However, one watershed was able to recover to pre hurricane
levels of evapotranspiration at a quicker rate due to the greater abundance
of pine seedlings and saplings in that watershed
Effects of Uncertainty of Drainage Area on Low-Gradient Watershed Hydrology
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Managemen
Streamflow Separation to Estimate Daily Unregulated Streamflow of Ungauged Watersheds in the Coastal Plains of Southeastern United States
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Managemen
Hurricane impacts on a pair of coastal forested watersheds: implications of selective hurricane damage to forest structure and streamflow dynamics
Hurricanes are infrequent but influential disruptors of ecosystem processes in the southeastern Atlantic and Gulf coasts. Every southeastern forested wetland has the potential to be struck by a tropical cyclone. We examined the impact of Hurricane Hugo on two paired coastal South Carolina watersheds in terms of streamflow and vegetation dynamics, both before and after the hurricane's passage in 1989. The study objectives were to quantify the magnitude and timing of changes including a reversal in relative streamflow difference between two paired watersheds, and to examine the selective impacts of a hurricane on the vegetative composition of the forest. We related these impacts to their potential contribution to change watershed hydrology through altered evapotranspiration processes. Using over 30 years of monthly rainfall and streamflow data we showed that there was a significant transformation in the hydrologic character of the two watersheds – a transformation that occurred soon after the hurricane's passage. We linked the change in the rainfall–runoff relationship to a catastrophic change in forest vegetation due to selective hurricane damage. While both watersheds were located in the path of the hurricane, extant forest structure varied between the two watersheds as a function of experimental forest management techniques on the treatment watershed. We showed that the primary damage was to older pines, and to some extent larger hardwood trees. We believe that lowered vegetative water use impacted both watersheds with increased outflows on both watersheds due to loss of trees following hurricane impact. However, one watershed was able to recover to pre hurricane levels of evapotranspiration at a quicker rate due to the greater abundance of pine seedlings and saplings in that watershed
Response of Nutrients and Sediment to Hydrologic Variables in Switchgrass Intercropped Pine Forest Ecosystems on Poorly Drained Soil
The Role of the Evaluation in Designing Ecosystem Services. A Literature Review
Starting from the Millennium Ecosystem Assessment several research domains have focused on the complex relationship that persists between environmental system and human well-being according to their own theoretical as well as operational paradigms. Few are the cross-sectorial researches aimed at analyzing the ecosystems, their services and performances at different scales according to an integrated approach. The combination of different approaches and research methodologies represents a promising perspective both for framing the analysis and for landscape designing. Furthermore, the development of integrated and cross-disciplinary studies on the identification, measurement and evaluation of Ecosystem Services (ESs) appears relevant for its practical consequences on urban planning decisions with special respect to the construction of innovative strategies for metropolitan agricultural systems, urban open spaces and green areas. Given these premises, the contribution provides a systematic review and a citation network analysis to understand the relationship between the role of the design and the importance of evaluation in the ESs’ field of research