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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Brood Abundance And Invertebrate Availability In Crop-Dominated Landscapes In The Prairie Pothole Region, Catrina V. Terry
Brood Abundance And Invertebrate Availability In Crop-Dominated Landscapes In The Prairie Pothole Region, Catrina V. Terry
LSU Master's Theses
The Prairie Pothole Region (PPR) is the most important region for ducks in North America, producing over half the ducks on the continent, and it is a priority landscape for wetland and grassland conservation. Agricultural expansion has changed the PPR, and the majority of grasslands and potholes have been converted into row-crops. The loss of nesting habitat has directly caused nest success to decline. Most of the remaining wetlands are surrounded by row-crops, and are considered lower quality because they receive runoff of sediment and chemicals, which may decrease primary forage for young ducklings as well as inhibit wetland vegetation. …
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.
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 …
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 …