Riparian Ecology and Conservation最新文献

{"title":"Editorial Riparian Ecology and Conservation: The Home of Cutting-edge Research on Riparian Biophysical Processes, Biodiversity, Ecosystem Functions and Services","authors":"Yixin Zhang","doi":"10.2478/REMC-2013-0001","DOIUrl":"https://doi.org/10.2478/REMC-2013-0001","url":null,"abstract":"Riparian ecosystems are among the most dynamic and complex systems in nature, which are transitional areas between terrestrial and aquatic ecosystems including perennial, intermittent and ephemeral streams, rivers, ponds, lakes, wetlands, and estuaries. Riparian areas are connected with water bodies not only through surface and subsurface geohydrology but also by reciprocal fluxes of energy, nutrients, matter, organisms, and provide many ecosystem functions, such as supporting natural biodiversity, enhancing biological production, water infiltration, nutrient transformation and contaminant removal, flood and erosion control. Riparian areas create ecological corridors to link different ecosystems and form a network across the landscape. Through these biophysical processes, healthy riparian areas provide a variety of ecosystem services to humans, including food, clean water, flood and erosion control, and natural areas for recreation and aesthetics. However, human-nature interactions in riparian areas are challenged by historical, current and upcoming environmental, economic and social problems caused by anthropogenic disturbances across scales from local land use change to global climate change. In past over 100 years, there is a substantial body of literature on riparian topics. Between 1900 and 2011, 11582 publications with the keyword of “riparian” were retrieved from the ISI Web of Knowledge Web of Science through the topic search on “riparian”. The Citation Databases used for the search were SCI-EXPANDED, SSCI, CPCI-S, CPCI-SSH (all from 1900 to present), and A&HCI (from 1975 to present). Early literature related to riparian topic mainly focused on riparian law and water law (about 40 publications during 1900-1970). Since 1970, a large body of literature showed the explosion of information covering vegetation, animal, habitat, and hydrologic topics. Over the last two decades, knowledge about riparian ecology, biophysical processes, ecosystem functioning and ecosystem services, conservation and management has significantly increased, and at the present day the substantial numbers of such publications have been growing (Figure 1). Indeed, the numbers of publications per year in different topic terms such as riparian ecosystem, conservation, riparian ecology, and riparian ecosystem functioning, have been steadily increasing from 1990, or for the case of riparian ecosystem services, from","PeriodicalId":347139,"journal":{"name":"Riparian Ecology and Conservation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116515097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of stranding and inundation on leaf litter decomposition in headwater streams","authors":"Hannah Riedl, L. Marczak, Natalie A. McLenaghan, Trent M. Hoover","doi":"10.2478/remc-2013-0002","DOIUrl":"https://doi.org/10.2478/remc-2013-0002","url":null,"abstract":"Abstract Discharge-driven shifts in the wetted area of streams can modify the amount of leaf litter resources available to stream consumers as well as the physical conditions to which leaf litter is exposed. The consequences of this continual movement from wet to dry storage for rates of organic matter processing and resource availability to benthic communities are poorly understood. We used a 30-day field experiment during the period of maximum stream contraction to examine the effects of stranding on black cottonwood (Populus trichocarpa) leaf litter decomposition rates and associated changes in microbial respiration in a forested stream in western Montana. Leaf litter was enclosed in both coarse and fine mesh bags and moved from the wetted area of the stream to the stream bank in six treatments designed to mimic a gradient of dry exposure due to stranding. We also measured existing accumulations of organic material in quadrats placed in both wet and dry areas of the stream. The total storage of litter resources (ash-free dry mass, g m2) retained on dry stream banks increased steadily as stream flow decreased, resulting from reductions in wetted width and continuous inputs from terrestrial zones. In contrast, total mass of stored litter submerged in the stream channel remained relatively constant. Leaf decomposition rates increased as a function of time inundated and were fastest in the presence of macroinvertebrates. Our results suggest that prolonged stranding can alter fundamental processes and energy pathways in stream food webs by shifting pools of resources from the active channel to dry storage on riverbanks where decomposition is driven primarily by microbial processes. Since the length of time that leaf litter is inundated prior to stranding alters decomposition rates, changes in stream hydrograph variability (as a consequence of land management practices or incipient climate change) has the potential to alter energy flow through stream systems. In particular, dry storage may function as a type of ‘temporal subsidy’ for stream organisms particularly if slowly decomposing stranded leaf litter is re-entrained during periods when in-stream detrital resources are otherwise scarce.","PeriodicalId":347139,"journal":{"name":"Riparian Ecology and Conservation","volume":"31 2-3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116593476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Importance of Riparian Zone: Effects of Resource Availability at Land-water Interface","authors":"H. Xiang, Yixin Zhang, J. Richardson","doi":"10.1515/remc-2016-0001","DOIUrl":"https://doi.org/10.1515/remc-2016-0001","url":null,"abstract":"Abstract Riparian zone provides a variety of resources to organisms, including availability of water and subsidies. Water availability in riparian areas influences species distribution and trophic interaction of terrestrial food webs. Cross-ecosystem subsidies as resource flux of additional energy, nutrients, and materials benefit riparian populations and communities (e.g. plants, spiders, lizards, birds and mammals). However, aquatic ecosystems and riparian zones are prone to anthropogenic disturbances, which change water availability and affect the flux dynamics of cross-system subsidies. Yet, we still lack sufficient empirical studies assessing impacts of disturbances of land use, climate change and invasive species individually and interactively on aquatic and riparian ecosystems through influencing subsidy resource availability. In filling this knowledge gap, we can make more effective efforts to protect and conserve riparian habitats and biodiversity, and maintain riparian ecosystem functioning and services.","PeriodicalId":347139,"journal":{"name":"Riparian Ecology and Conservation","volume":"300 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131724638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}