نتایج جستجو برای: marsh
تعداد نتایج: 5625 فیلتر نتایج به سال:
background: gavkhooni marsh is one of the most important marshes in iran. in the recent years, natural conditions of this marsh have been affected by agricultural and industrial activities in zayandehrood river catchment areas. this research was carried out in 2006 to assess some chemical parameters and the heavy metals concentration in water, soil, and plants in the area and to compare the res...
Coastal salt marshes are highly sensitive wetland ecosystems that can sustain long-term impacts from anthropogenic events such as oil spills. In this study, we examined the microbial communities of a Gulf of Mexico coastal salt marsh during and after the influx of petroleum hydrocarbons following the Deepwater Horizon oil spill. Total hydrocarbon concentrations in salt marsh sediments were high...
Impacts of livestock grazing in arid and semiarid environments are often concentrated in and around wetlands where animals congregate for water, cooler temperatures, and green forage. We assessed the impacts of winter-spring (November-May) cattle grazing on marsh vegetation cover and occupancy of a highly secretive marsh bird that relies on dense vegetation cover, the California Black Rail (Lat...
BACKGROUND Limited data on a short series of patients suggest that lymphocytic enteritis (classically considered as latent coeliac disease) may produce symptoms of malabsorption, although the true prevalence of this situation is unknown. Serological markers of coeliac disease are of little diagnostic value in identifying these patients. AIMS To evaluate the usefulness of human leucocyte antig...
مقدمه و هدف: مطالعات اندکی در کشورهای غرب آسیا در مورد شیوع بیماری سلیاک صورت گرفته است و در ایران تنها یک مطالعه به بررسی شیوع بیماری سلیاک در اهداء کنندگان خون پرداخته است. هدف این مطالعه بررسی شیوع بیماری سلیاک در شهر ساری است. مواد و روش ها: این مطالعه توصیفی در سال 1382 روی 1438 نفر (686 مرد و 752 زن، متوسط سن 35.5 سال از محدود سنی 18-66 سال) افراد اهل شهر ساری به روش تصادفی لایه ای انجام ...
Characteristics of Ponds Used by Breeding Mottled Ducks on the Chenier Plain of the Texas Gulf Coast
Mottled ducks Anas fulvigula are nonmigratory and primarily depend on habitats associated with coastal marshes of the Gulf Coast for their entire life cycle. Much of remaining available coastal marsh habitats of the Texas Gulf Coast are managed by state and federal agencies. The Texas Gulf Coast breeding population of mottled ducks has recently declined dramatically. To aid in development of ma...
Armoring shorelines to prevent erosion is a long-standing global practice that has well-documented adverse effects on coastal habitats and organisms. A relatively new form of shoreline protection, referred to as hybrid stabilization, incorporates created marsh in combination with a stabilizing structure such as a low-profile stone sill and is being implemented in many US coastal states as a mea...
—Little is known about the population status of many marsh-dependent birds in North America but recent efforts have focused on collecting more reliable information and estimates of population trends. As part of that effort, a standardized survey protocol was developed in 1999 that provided guidance for conducting marsh bird surveys throughout North America such that data would be consistent amo...
background recent guidelines have proposed that there is a correlation between tissue transglutaminase (ttg) antibody titers and degrees of duodenal biopsy, and that duodenal biopsy can be omitted in some patients with high levels of ttg antibody. using data of registered patients in a gastrointestinal clinic we aimed to assess the correlation between tissue transglutaminase antibody with duode...
We performed pollen analysis and accelerator mass spectrometry (AMS) radiocarbon dating on cored sediments (KS0412-3) from Kashibaru Marsh, located in the western part of the Sefuri Mountains in northern Kyushu, southwestern Japan, to investigate environmental change around the marsh. Sediment accumulation began in this marsh around cal AD 1200 and continued with an estimated average sedimentat...
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