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Articles 31 - 60 of 112
Full-Text Articles in Life Sciences
Phytological Study Of Freshwater Wetland Ecosystem Of Bajwat Area, Zahid Bhatti, Asad Ghufran, Sher Wali Khan
Phytological Study Of Freshwater Wetland Ecosystem Of Bajwat Area, Zahid Bhatti, Asad Ghufran, Sher Wali Khan
Journal of Bioresource Management
Freshwater wetlands are individual ecosystems that support a variety of wildlife, vegetation and microscopic life. The type of plants that exist in these areas describe the physico-chemical characteristics of their locality and vice-versa. This study was carried out at Marala wetlands in Bajwat Game Reserve. The study found 39 species of higher plants in the areas of the wetland and its associated terrain. The total species were arranged into 5 vegetation types, named on the basis of the dominant plant species, with their own composition of the species and present in different habitat conditions. The vegetative community Phragmites karka constituted …
Factors Affecting Waterfowl Diversity At Wetland Area, Punjab (Pakistan), Zahid Bhatti, Fakhra Nazir, Inayatullah Malik
Factors Affecting Waterfowl Diversity At Wetland Area, Punjab (Pakistan), Zahid Bhatti, Fakhra Nazir, Inayatullah Malik
Journal of Bioresource Management
Different wetlands are being selected through WWF to improve their conditions and to create awareness about their importance in public of Pakistan. The study will help in providing sound basis for the future conservation activities and management of waterfowl population, on sounder footing. The study was conducted at Marala wetlands from October 2000 to September 2001. The State of Jammu and Kashmir lies in the north. Three rivers, i.e., Tawi, Chenab and Manawar Tawi, coming from Jammu and Kashmir, flow into Game Reserve and meet to enter the Head Marala water storage reservoir. At river Jammu Tawi, 58 species of …
Connectivity And Nitrate Uptake Potential Of Intermittent Streams In The Northeast Usa, Kelly Addy, Arthur J. Gold, Molly K. Welsh, Peter V. August, Mark H. Stolt, Clay P. Arango, Peter M. Groffman
Connectivity And Nitrate Uptake Potential Of Intermittent Streams In The Northeast Usa, Kelly Addy, Arthur J. Gold, Molly K. Welsh, Peter V. August, Mark H. Stolt, Clay P. Arango, Peter M. Groffman
All Faculty Scholarship for the College of the Sciences
Non-perennial streams dominate the extent of stream networks worldwide. Intermittent streams can provide ecosystem services to the entire network—including nitrate uptake to alleviate eutrophication of coastal waters—and are threatened by lack of legal protection. We examined 12 intermittent streams in the temperate, humid climate of the Northeast USA. Over 3 years of monitoring, continuous flow was observed a median of 277 d yr−1, with no-flow conditions from early summer into fall. Estimated median discharge was 2.9 L s−1 or 0.36mm d−1. All intermittent streams originated from source wetlands (median area: 0.27 ha) and the median length of the intermittent stream …
Understanding Wetlands And Irrigation In The Little Snake River Basin, Wyoming, Lindsey Washkoviak
Understanding Wetlands And Irrigation In The Little Snake River Basin, Wyoming, Lindsey Washkoviak
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
The Little Snake River Basin (LSRB) is a managed basin in South-central Wyoming located within the Colorado River watershed facing severe water shortages. There is increased pressure on water resource managers and agricultural producers to adopt water efficiency practices that could negatively affect wetland resources. However, studies have begun to quantify the importance of irrigation for recharging groundwater, maintaining late season instream flows, and maintaining and creating wetlands that provide wildlife habitat and ecosystem services.
In the LSRB there are 11,636 acres of wetlands; 56% of which overlap with irrigation. Conversion to more efficient irrigation could reduce water availability to …
Livestock At Marala Head, Zahid Bhatti, Fakhra Nazir, Jibran Haider
Livestock At Marala Head, Zahid Bhatti, Fakhra Nazir, Jibran Haider
Journal of Bioresource Management
Pakistan possesses the most varied and widely distributed network of wetlands. The study area spanned across Kikar post to head Marala at river Jammu Tawi from Kalyal to head Marala at river Chenab and from Rangpur Kuri to head Marala at river Manawar Tawi. Total count of the livestock (resting grazing) population was taken during each calendar month of the year, i.e., from October, 2000 to September 2001. The results of the survey confirmed the presence of 6 common species of livestock i.e. sheep, goat, buffaloes, cows, donkeys and horses in the study area in different sizes of populations.
Riparian Zone Soil Microbial Community Dynamics: Interactions With Nutrient Loadings, James Bannister
Riparian Zone Soil Microbial Community Dynamics: Interactions With Nutrient Loadings, James Bannister
Theses and Dissertations (Comprehensive)
Riparian zones are a type of wetland described as the interface between land and a body of water such as a river or stream. Riparian zones are effective buffers against anthropogenic pollutants and nutrient loads from non-point sources that can greatly diminish water quality. Riparian zones can host a variety of plant species and associated microbial communities. The combined biological processes of plants, bacteria, and arbuscular mycorrhizal fungi (AMF) are key to nutrient cycling and nutrient removal in riparian zones. As such, understanding the factors that influence them is critical for watershed management. This research is targeted at obtaining a …
Checklist Of Zooplanktons In Different Rivers Of Bajwat Area, Zahid Bhatti, Muhammad Asif Gondal, Asad Ghufran, Andleeb Batool
Checklist Of Zooplanktons In Different Rivers Of Bajwat Area, Zahid Bhatti, Muhammad Asif Gondal, Asad Ghufran, Andleeb Batool
Journal of Bioresource Management
Zooplanktons are important fish and waterfowl food. Limnological studies of Marala Wetlands, a complex created by three rivers, i.e., Jammu Tawi, Chenab and Manawar Tawi, entering Bajwat area located 25 km from North of Sialkot city from state of Jammu and Kashmir, were carried out between October, 2000 to September 2001. This survey was carried out to create a checklist of zooplanktons existing in the study site which would help in future studies relating to aquatic biodiversity and ecological studies of wetlands. A minimum of 25 species of zooplanktons were present in the wetland area, which can be included into …
A Glimpse Into The Ecological Communities Of Camp Greenwood, Rachael Noteboom
A Glimpse Into The Ecological Communities Of Camp Greenwood, Rachael Noteboom
Honors Projects
There is a Presbyterian summer camp near Greenville, Michigan that is home to beautiful wetlands with a variety of wildlife. This camp is nestled between multiple larger connected lakes and surrounded by many large waterfront properties. The number of campers has dwindled in recent years and the council in charge of the land is desperate to sell the most ecologically important sections of the camp, if not all of the land, to developers for multi-million dollar price tags. My dad is on the committee trying to convince the council and the community to save the camp from development.
I surveyed …
The Distribution, Abundance, And Gut Microbiome Of Ribbed Mussel, Geukensia Demissa, Across Natural And Restored Salt Marshes In Jamaica Bay, New York, Bethany Freynk
Student Theses and Dissertations
Coastal wetlands perform valuable functions by protecting shorelines from floodwaters and storm surges, providing habitats for marine species, and improving local water quality. Unfortunately, over half of the area of global wetlands has been lost over the past century. Locally, in Jamaica Bay (Queens, NY), loss of wetlands has exceeded 98%. Restoration of Jamaica Bay marshes began in 2003. Ribbed mussels, Geukensia demissa, live symbiotically with marsh plants and have been shown to stabilize sediments and provide organic nutrients that enhance marsh plant growth. Mussels are suspension feeders, which collect algae from seawater and deposit organic matter in marsh sediments. …
Incorporating Multi-Spectral Imaging Into Long-Term Upland Breeding Bird Monitoring, Kyle William Schumacher
Incorporating Multi-Spectral Imaging Into Long-Term Upland Breeding Bird Monitoring, Kyle William Schumacher
Master's Theses
Quivira National Wildlife Refuge in Kansas, United States partnered with Fort Hays State University Hays, KS in 2014 to begin a collaborative research project that aimed to develop a long-term monitoring protocol guided by the Comprehensive Conservation Plan for the refuge published in 2013. This plan identified specific wildlife taxa underrepresented in management impact assessments throughout the property. As a result of this plan, surveys were established to monitor interactions between upland breeding birds and the vegetation community. I conducted point count surveys in 2016, 2017, and 2018 for 122 observation points across four transects. I measured seventeen vegetation variables …
Varying Water Stress In Mimulus Ringens, Sara Stiles
Varying Water Stress In Mimulus Ringens, Sara Stiles
Williams Honors College, Honors Research Projects
A wetland plant’s ability to tolerate flooding is important to determining where that plant can grow. Previous studies have shown the optimal flood tolerance of Mimulus ringens is between -2cm and -6cm (Fraser & Karnezis, 2005). This experiment expands on these previous experiments by testing variation in water levels instead of maintaining the water levels at one height throughout the experiment. The hypothesis of the experiment is that Mimulus ringens that have variation in water levels will show signs of better growth than plants with a constant water level. Contrary to predictions, the results showed the final height, number of …
Salt Retention In Wetland Soils And Effects On Dissolved Organic Carbon Export, Kayla Marie Mcguire
Salt Retention In Wetland Soils And Effects On Dissolved Organic Carbon Export, Kayla Marie Mcguire
Master's Theses and Doctoral Dissertations
Deicing salt runoff has negative effects on ecosystems. Wetland ecosystems can act as important filters for runoff pollution (e.g., nutrients), mitigating damage to plants and microbes. Wetlands are important sinks for nutrients and pollutants (e.g., road salt) and transformation spots for many nutrients including carbon. The interactions between deicing salt runoff and wetland soil carbon were explored by measuring chloride export and retention, dissolved organic carbon (DOC) export, and carbon quality using mesocosm experiments. Net retention of Cl- was highest in soils receiving high salt treatments (5.0 g/L NaCl), although percent retention of Cl- was greater in soils receiving moderate …
The Influence Of Water Quality On Wetland-Associated Microbial Communities, Lindsey Clairmont
The Influence Of Water Quality On Wetland-Associated Microbial Communities, Lindsey Clairmont
Theses and Dissertations (Comprehensive)
Within a wetland environment, bacteria in association with plant roots play a vital role in maintaining the health of freshwater ecosystems. In order to gain insight into the stability and processes occurring within natural and constructed wetland environments we need to develop a better understanding of the relationship between wetland plants, root-associated microbial communities and environmental factors. Human population growth and urbanization have resulted in greater contaminant loads (inorganic nutrients, fecal contamination etc.) entering our waterways. As such, we need a better understanding of how anthropogenic impacts influence the structure and function of the wetland-associated microbial communities that we rely …
Plant Size And Competitive Dynamics Along Nutrient Gradients, Deborah E. Goldberg, Jason P. Martina, Kenneth J. Elgersma, William S. Currie
Plant Size And Competitive Dynamics Along Nutrient Gradients, Deborah E. Goldberg, Jason P. Martina, Kenneth J. Elgersma, William S. Currie
Faculty Publications
Resource competition theory in plants has focused largely on resource acquisition traits that are independent of size, such as traits of individual leaves or roots or proportional allocation to different functions. However, plants also differ in maximum potential size, which could outweigh differences in module-level traits. We used a community ecosystem model called mondrian to investigate whether larger size inevitably increases competitive ability and how size interacts with nitrogen supply. Contrary to the conventional wisdom that bigger is better, we found that invader success and competitive ability are unimodal functions of maximum potential size, such that plants that are too …
Bee Communities On Managed Emergent Wetlands In The Lower Mississippi Alluvial Valley Of Arkansas, Phillip Lee Stephenson
Bee Communities On Managed Emergent Wetlands In The Lower Mississippi Alluvial Valley Of Arkansas, Phillip Lee Stephenson
Graduate Theses and Dissertations
Native bee communities that use emergent wetlands are among the least studied systems in bee research. Most native bee species are thought to be in decline based on the loss of usable habitat across the United States. I surveyed emergent wetlands in the lower Mississippi Alluvial Valley of Arkansas during the summers of 2015 and 2016 using pan traps, blue-vane traps, and sweep nets to determine the current status of bee communities in this system. I surveyed 11 sites in 2015 and 17 sites in 2016 and found that bee communities were similar in actively versus passively managed emergent wetlands. …
Rate Of Vegetation Recovery In Restored Prairie Wetlands, Saloni Salaria
Rate Of Vegetation Recovery In Restored Prairie Wetlands, Saloni Salaria
Electronic Thesis and Dissertation Repository
Wetlands are restored to compensate for wetland loss and degradation. To determine the potential rate and success of vegetation recovery in restored wetlands, prairie wetlands of different restoration ages (3 to 23 years since restoration), including drained and natural (embedded within both agricultural and protected landscape), were sampled for vegetation in Alberta, Canada. Vegetation was assessed based on species richness, percentage and cover of hydrophytes, natives and non-natives, and community composition. Analysis of covariance with wetland area as a covariate and non-metric multidimensional scaling results indicated that restored wetlands resembled low-integrity natural wetlands that occurred on agricultural landscapes within 3-5 …
Discovery Of The Genus Mirodryinus Ponomarenko, 1972 (Hymenoptera, Chrysidoidea,Dryinidae) Associated With Salt Cedar Trees In The Eastern Part Of Iran, Hossein Ali Derafshan, Ehsan Rakhshani, Massimo Olmi, Mehri Vafaei
Discovery Of The Genus Mirodryinus Ponomarenko, 1972 (Hymenoptera, Chrysidoidea,Dryinidae) Associated With Salt Cedar Trees In The Eastern Part Of Iran, Hossein Ali Derafshan, Ehsan Rakhshani, Massimo Olmi, Mehri Vafaei
Turkish Journal of Zoology
In 2015 and 2016 a survey was carried out on the parasitoids of leafhoppers (Hemiptera, Cicadomorpha) feeding on salt cedar trees (Tamarix spp.) growing around Hamoon Lake in the Sistan region (Iran). Among the collected material, a series of dryinid specimens belonging to Mirodryinus atlanticus Olmi, 1984 (Hymenoptera, Dryinidae, Bocchinae) was captured on branches of Tamarix aphylla (L.) Karst. and Tamarix stricta Boiss., infested by Opsius versicolor (Distant) (Hemiptera, Cicadellidae). The subfamily Bocchinae and the genus Mirodryinus Ponomarenko, 1972 are new records for Iran. Diagnostic characters and notes on the morphological variability of the newly collected specimens are presented and …
The Influence Of Temperature On The Hibernation Patterns And Activity Ofvertigo Moulinsiana (Dupuy, 1849) (Gastropoda: Pulmonata: Vertiginidae), Zofia Ksiazkiewicz Parulska, Katarzyna Pawlak
The Influence Of Temperature On The Hibernation Patterns And Activity Ofvertigo Moulinsiana (Dupuy, 1849) (Gastropoda: Pulmonata: Vertiginidae), Zofia Ksiazkiewicz Parulska, Katarzyna Pawlak
Turkish Journal of Zoology
The aim of this study was to investigate the impact of different temperatures, i.e. 11 °C and 21 °C, in conditions of medium relative humidity on the rate of awakening of Vertigo moulinsiana after hibernation and its activity during the following 7 days. Oneway ANOVA did not show statistically significant differences in timings of awakening and activity between individuals kept at 11 °C and 21 °C during the first day of the study. The 1-week observations of the activity of V. moulinsiana showed significant differences in relation to temperature. Snails were more active at the lower temperature, which may be …
Herbaceous Vascular Flora Of Forested Seep Wetlands In Winneshiek County, Iowa, Usa, Elizabeth A. Lynch, Anna Burke Weckwerth
Herbaceous Vascular Flora Of Forested Seep Wetlands In Winneshiek County, Iowa, Usa, Elizabeth A. Lynch, Anna Burke Weckwerth
Journal of the Iowa Academy of Science: JIAS
Forested seep wetlands dominated by skunk cabbage (Symplocarpus foetidus) occur frequently in the Canoe Creek watershed of the Upper Iowa River, but this type of wetland has not been described systematically in the upper Midwest. The goal of this study is to document the herbaceous plant flora of five seeps. Although individual seeps are small (200-500 m2), they provide habitat for a high number of plant species. Five seeps with total area less than 0.2 ha supported more than 120 native vascular herbaceous taxa, 20 of which have a coefficient of conservatism (C-value) of 7 or …
An Assessment Of How Plant And Mycorrhizal Communities Have Been Affected Along A Mine-Impacted Watershed In The Northwest Territories, Kevin Maccoll
An Assessment Of How Plant And Mycorrhizal Communities Have Been Affected Along A Mine-Impacted Watershed In The Northwest Territories, Kevin Maccoll
Theses and Dissertations (Comprehensive)
Giant Mine is an inactive gold mine located nine kilometers north of Yellowknife, Northwest Territories. Giant Mine has been the source of arsenic trioxide for the Baker Creek watershed since it opened over 60 years ago. Although arsenic levels in the creek are above the limits considered to be biologically relevant, there is no concrete evidence that plants and mycorrhizae have actually been affected. This study provides an initial assessment of the impacts mining activity at Giant Mine has had on plants and mycorrhizae in the Baker Creek watershed. Nine sites were sampled around Giant Mine: five sites downstream from …
The Forgotten Cousin In Freshwater Community Ecology: Tidal Freshwater Wetlands, Jack R. Mclachlan
The Forgotten Cousin In Freshwater Community Ecology: Tidal Freshwater Wetlands, Jack R. Mclachlan
Electronic Theses and Dissertations
Tidal freshwaters are unique in their placement in the landscape, forming where freshwater riverine flows are sufficient to overwhelm the saline water of the incoming tide, but not strong enough to suppress tidal water-height fluctuations. Tidal freshwaters and their wetlands have been overlooked by freshwater and marine researchers alike; neither discipline considers tidal freshwaters to fall under their purview. Invertebrate communities in tidal freshwaters are thought to be species depauperate; the consensus is that they support fewer taxa than nearby non-tidal freshwaters, but little is known about how these communities are structured. This study investigated how tidal hydrology, an atypical …
Developing A Multimetric Index To Assess Resaca Ecosystem Health, Buford J. Lessley
Developing A Multimetric Index To Assess Resaca Ecosystem Health, Buford J. Lessley
Theses and Dissertations
As the only freshwater ecosystem in the lower Rio Grande Valley aside from the Rio itself, resacas are critical habitat for many species of flora and fauna. Old distributaries of the Rio Grande, resacas provided conveyance routes moving floodwater to the Laguna Madre. Today these wetlands are novel ecosystems and are artificially maintained. Urbanization and agriculture have lead to sedimentation, habitat loss, contaminants, poor water quality, and invasive species. The objective of this study was to assess and monitor resaca pools and to compose the Resaca Health Index (RHI) from selected indicators of ecosystem structure and function including leaf litter …
The Vascular Flora And Community Structure Of Little Calumet Headwaters Nature Preserve, Laporte Country, Indiana, Julia L. Angstmann, Paul E. Rothrock, Thomas W. Post
The Vascular Flora And Community Structure Of Little Calumet Headwaters Nature Preserve, Laporte Country, Indiana, Julia L. Angstmann, Paul E. Rothrock, Thomas W. Post
Julia Angstmann
Little Calumet Headwaters Nature Preserve is a 108-acre tract of woodland and wetland areas that comprise the headwaters of the Little Calumet River in northwestern Indiana. The preserve, consisting of upland hardwood forests, groundwater seeps, and wetland complex, is an area of high diversity due to its topographical variation. A floristic inventory, plot sampling, and seed bank analysis were used to determine the structure and composition of the plant communities. The flora consists of 298 species (27 exotic) representing 188 genera and 84 families. Dominant vegetation of the forest includes Liriodendron tulipifera, Prunus serotina, Packera aurea and Podophyllum peltatum. Each …
Comparison Of Soil Phosphorus Concentration In Farm Restored And Reference Wetlands In Lake County, Il, Catherine L. Pease
Comparison Of Soil Phosphorus Concentration In Farm Restored And Reference Wetlands In Lake County, Il, Catherine L. Pease
DePaul Discoveries
The soil in the Midwest is fertile for agriculture use and therefore a lot of the wetlands have been turned into farmland. Wetlands can act as a sink for excess nutrients such as phosphorus. In part due to their value for nutrient storage, restoration of wetlands has become more frequent, including restoration of wetlands on former farmland. I am interested in phosphorus and the potential of wetlands to either store or release phosphorus. I compared differences in soil reactive phosphorus of restored and reference wetlands. This study compares Prairie Wolf Slough (PWS), a restored wetland, to two reference wetlands, both …
Vegetative Responses To Hydrology And Ground Water Extraction In West-Central Florida Cypress Domes, Paul Thurman
Vegetative Responses To Hydrology And Ground Water Extraction In West-Central Florida Cypress Domes, Paul Thurman
USF Tampa Graduate Theses and Dissertations
The increasing demand for and limited supply of fresh water necessitates an understanding of how human actions affect aquatic ecosystems. Anthropogenic impacts to these ecosystems occur in many forms including eutrophication, invasive species removals, and hydrologic alterations. Ground water extraction is one such action that can dramatically impact wetland hydrology and is increasing in occurrence globally as clean surface water resources are exhausted. Despite the importance of ground water extraction to meet human demand, little information is available concerning the response of vegetation communities to chronic ground water extraction. Over extraction is known to result in reduced water levels and …
How Nebraska’S Eastern Saline Wetland Native Plant Species Grow In Response To Restoration Methods: Application Of Different Salinity Level Groundwater, Ellen Dolph, Keunyea Song, Amy Burgin, Trenton E. Franz
How Nebraska’S Eastern Saline Wetland Native Plant Species Grow In Response To Restoration Methods: Application Of Different Salinity Level Groundwater, Ellen Dolph, Keunyea Song, Amy Burgin, Trenton E. Franz
UCARE Research Products
Nebraska’s Eastern Saline Wetlands are unique ecosystems endemic to the Salt and Rock Creek waters in Lancaster and Saunders County.
They provide an ecosystem services as well as habitat for endangered species such as the state endangered saltwort (Salicornia rubra) and federally endangered Salt Creek tiger beetle (Cicindela nevadica lincolniana).
Over 80 % of the saline wetlands are highly degraded and in recent years, the Saline Wetland Conservation Partnership has formed to conserve and restore the remaining saline wetland fragments, but there is limited information about inland saline wetland restoration. Purpose: Investigate techniques to better conserve …
Density, Abundance, And Habitat Associations Of The Inland Swamp Sparrow (Melospiza Georgiana Georgiana) In Iowa, Tyler Harms, Stephen Dinsmore
Density, Abundance, And Habitat Associations Of The Inland Swamp Sparrow (Melospiza Georgiana Georgiana) In Iowa, Tyler Harms, Stephen Dinsmore
Tyler Harms
Wetlands continue to decline throughout North America and the Prairie Pothole Region, thus emphasizing the importance of understanding population trends and habitat associations of wetland species to ensure effective conservation and habitat management of those species. We estimated density and abundance and evaluated habitat associations of the Inland Swamp Sparrow (Melospiza georgiana georgiana) in Iowa. We conducted standardized distance sampling surveys for Swamp Sparrows and measured habitat characteristics at 307 wetlands in two regions of Iowa in 2009 and 2010. We used Program Distance to model detection probability and estimate region-specific breeding densities of Swamp Sparrows at Iowa …
The Ecological Succession Of Mosquitoes Inhabiting Waste Tires In A Subtropical Swamp And Upland Forest In Central West Florida, Emily Thuong Nguyen Dinh
The Ecological Succession Of Mosquitoes Inhabiting Waste Tires In A Subtropical Swamp And Upland Forest In Central West Florida, Emily Thuong Nguyen Dinh
USF Tampa Graduate Theses and Dissertations
Literature has not yet seen a contribution involving the description of successional patterns of mosquitoes (Diptera: Culicidae) inhabiting discarded automobile tires in sylvan areas nor an investigation into the macro- and micro-environmental factors that may influence the seasonal shifts in species composition and abundance in that respective habitat. Waste tires in undeveloped forests are a hazard to human and animal health because they can support a population of vector mosquitoes. Locating productive waste tire mosquito habitats is problematic in wooded areas but is crucial for diminishing pathogen transfer in areas where humans have regular access to forests because of possible …
Characterization Of Current And Historical Variations In Sediment Accretion And Carbon Dynamics At The Rice Rivers Center Kimages Creek Wetland Restoration, Melissa J. Davis, Christopher D. Gatens, Edward R. Crawford, Arif Sikder
Characterization Of Current And Historical Variations In Sediment Accretion And Carbon Dynamics At The Rice Rivers Center Kimages Creek Wetland Restoration, Melissa J. Davis, Christopher D. Gatens, Edward R. Crawford, Arif Sikder
Rice Rivers Center Research Symposium
Current research of freshwater wetland soils have assessed and reported smaller stocks of soil organic carbon in restored wetlands compared to reference natural wetlands. However, a majority of these studies focus on sites restored from agricultural draining of non-tidal depressional wetlands,whereas carbon and accretion dynamics in tidal freshwater wetlands restored via dam removal is poorly understood. The U.S. Army Corps of Engineers estimates over 80,000 dams greater than 6 feet and tens of thousands of smaller dams pepper the U.S., of which the majority are unsafe, old or no longer serve their intended purpose. Damming disrupts the natural flow of …
Greenhouse Gas Emissions Over A Tidal Cycle In A Freshwater Wetland, Joseph C. Morina, Rima B. Franklin
Greenhouse Gas Emissions Over A Tidal Cycle In A Freshwater Wetland, Joseph C. Morina, Rima B. Franklin
Rice Rivers Center Research Symposium
Tidal freshwater wetlands are located at the interface of non-tidal freshwater riverine systems and estuarine tidal systems. These habitats experience freshwater tides, creating unique redoximorphic soil characteristics while simultaneously presenting an opportunity for hydrologic nutrient transport into the system. Because of this periodic flooding and draining, tidal freshwater wetlands are systems of intense biogeochemical transformations, which are microbially mediated. Several microbial transformations (e.g., methanogenesis, incomplete denitrification, and nitrification) result in the production of greenhouse gases (CO2, CH4, and N2O) at globally-significant levels. For example, wetlands are one of the greatest sources of methane on Earth, accounting for 20-33% of the …