Author: Michele Eloise BakacsPublisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
A Multi-scale Study of the Effects of Current and Historic Land Cover Change of Riparian Plant Communities of Headwater Streams
Author: Michele Eloise BakacsPublisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Multi-scale Assessment of Riparian Systems
Author: Tamara Heartsill ScalleyPublisher:
ISBN:
Category : Ecological assessment (Biology)
Languages : en
Pages : 104
Book Description
Riparian Areas
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309082951
Category : Science
Languages : en
Pages : 449
Book Description
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Riparian Ecology and Management in Multi-land Use Watersheds
Author: American Water Resources Association. Summer Specialty ConferencePublisher:
ISBN:
Category : Riparian areas
Languages : en
Pages : 634
Book Description
Riparian Areas
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309169771
Category : Science
Languages : en
Pages : 448
Book Description
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Correlation of Riparian Vegetation and Stream Attributes
Author: Rachel Ann MillerPublisher:
ISBN:
Category : Riparian ecology
Languages : en
Pages : 94
Book Description
Riparian plant assemblages give clues of the conditions of the soil and other physical characteristics of their stream-side environment. The plight of the spring/summer, and fall Snake River chinook salmon has aroused interest in fish habitat and the effects of riparian plants on fish habitat. This study was launched to determine if riparian plant species assemblages could be used as an efficient assessor of fish habitat and the effects of land use on riparian areas and streams in the Payette National Forest in Central Idaho. Five plant communities are described. Stream attributes of streambank undercut width and streambank stability were different between communities, while fish habitat type and substrate particle size were not. Management implications for each plant community type were drawn from the current condition of the riparian area and stream attributes.
Riparian Ecosystems and Their Management
Author: Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 540
Book Description
Multi-scale Interactions Between Riparian Vegetation and Hydrogeomorphic Processes (the Lower Allier River)
Author: Borbála HortobágyiPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
N ecosystems, such as rivers, salt marshes, mangroves, coastal dunes which are exposed to frequent and regular hydrogeomorphic fluxes (i.e. physical disturbances), feedbacks between geomorphology (water, sediment and landforms) and plants (e.g. Populus nigra L., Salix alba L., Salix purpurea L. in rivers) can occur. Vegetation esta¬blishment is controlled by hydrogeomorphic processes which in turn are modulated by vegetation. Such feedbacks control riparian ecosystem dynamics. In this thesis, we addressed two main questions in an effort to better understand feedbacks between riparian vegetation and hydrogeomorphic processes: (i) How does riparian vegetation respond to hydrogeomorphic constraints? (ii) How, and to what extent, do established engineer plants affect fluvial geomorphology? We studied these questions through a nested multi-scale approach from landscape pattern to plant trait scales on the dynamic wandering Allier River (France). We tested the applicability of the method of photogrammetry to quantify the response and the effect of riparian vegetation and biogeomorphic feedbacks at different spatio-temporal scales (i.e. corridor, alluvial bar and individual). At the corridor scale, we searched for the topographic signature of riparian vegetation in the landscape, using photogrammetric and LiDAR data. At the intermediate alluvial bar scale, we investigated the aptitude of three dominant pioneer riparian Salicaceae species (P. nigra, S. purpurea and S. alba) to establish and to act as ecosystem engineers by trap¬ping fine sediment. At the finest, plant trait scale, we quantified the relation between response trait attributes of young P. nigra plants and their exposure to three different levels of mechanical stress (a highly exposed bar-head, a less exposed bar-tail, a chute channel). We identified some difficulties or failures to properly apply photogrammetry in biogeomorphic feedback studies. However, photogrammetry appeared as a useful tool to quantify a set of relevant parameters to respond to fundamental research questions concerning biogeomorphic feedbacks at the three nested spatial scales. At the broadest, the topographic signature of vegetation was not easy to capture because of the complex shifting mosaic of landforms of the Allier River. However, by focusing on more connec¬ted, restricted areas (i.e. alluvial bars), the signature of vegetation could be captured. It seems to increase with increasing vegetation height corresponding to the evolutionary phases of the fluvial biogeomorphic succession (FBS) model. At the intermediate, alluvial bar scale, biogeomorphic feedbacks could be well identified. The capacity of riparian plants to establish and act as ecosystem engineers depended both on species and their physiognomy, their age and their location on alluvial bars. At the finest, individual plant scale, we captured the contrasting morphological and biomechanical response of P. nigra to variable mechanical stress exposure from a trait perspective. In all hierarchical levels, scale-related biogeomorphic feedbacks were detected and described in a conceptual model. The three scales were considered as cycles composed of four different phases, which can have a variable temporality. The broadest spatio-temporal scale represents the evolution over several decades of the landscape mosaic resulting from the balance between constructive (vegetation establishment, growth and succession) and destruc¬tive (floods) forces. [...].
Impact of water level changes on woody riparian and wetland communities
Author: Robert O. TeskeyRiparian Zone Management in Coastal Plain Streams
Author: Marcus W. GriswoldPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This reflected the higher biomass of chlorophyll a in macrophytes and bacteria in leaf packs. This was supported during a behavioral study utilizing a habitat specialist and generalist where the availability of both macrophytes and leaf packs was preferred by both groups and decreased emigration rates from landscapes. Increased diversity of habitats created by harvest potentially balanced the effects of habitat fragmentation and isolation. Evidence from this study indicates that properly managed riparian zones effectively maintain water quality in small coastal plain streams. However, managers should consider the consequences of reducing habitat specialists and its potential effects on food-web structure.