Effects of moist-soil management on playa wetland soils

Haukos, David A.; Smith, Loren M.

doi:10.1007/bf03160688

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…However, production under unmanaged con¬ ditions are exceedingly variable (Haukos and Smith 1993b) such that accurately estimating annual produc¬ tion for management purposes across local, regional, or even the entire PLR scales may be difficult. Haukos and Smith (1996) found that management of playas did not affect soil nitrogen and phosphorus levels. However, they concluded that nutrient availability in playa soils was determined by regional environmental conditions with nitrogen potentially limiting plant pro¬ duction in wet years and phosphorus potentially limit¬ ing in dry years.…”

Section: Discussionmentioning

confidence: 91%

Plant communities of playa wetlands in the southern Great Plains /

Haukos¹,

Smith²

2004

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All rights reserved. No portion of this book may be reproduced in any form or by any means, including electronic storage and retrieval systems, except by explicit, prior written permission of the publisher. This book was set in Times New Roman and printed on acid-free paper that meets the guidelines for permanence and durability of the Committee on Production Guidelines for Book Longevity of the Council on Library Resources.

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Section: Discussionmentioning

confidence: 91%

Plant communities of playa wetlands in the southern Great Plains /

Haukos¹,

Smith²

2004

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“…A drawdown of wetlands in April coincides with peak shorebird concentrations for most species (Davis and Smith 1998) and theoretically should concentrate invertebrates (Helmers 1992) for optimal foraging by shorebirds. Vegetative productivity should be maintained as moist-soil management has little effect on playa soil nutrients (Haukos and Smith 1996).…”

Section: Discussionmentioning

confidence: 99%

Invertebrate Response to Moist-Soil Management of Playa Wetlands

Anderson

Smith

2000

Ecological Applications

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Moist-soil management is a wetland management technique commonly used to increase seed production for migratory birds. However, the responses of invertebrates to moist-soil management have seldom been investigated even though their availability may be as important as seeds to foraging waterbirds. We studied the effects of moist-soil management and initial fall flooding date (September vs. November) on invertebrate density, biomass, and diversity in 12 playa wetlands on the Southern High Plains, USA, during the winters of 1994-1995 and 1995-1996. Invertebrates were sampled using a combination of benthic core, epiphytic, and water-column samplers. Total invertebrate density and biomass were higher in playas that were moist-soil managed and that had longer hydroperiods (four rather than two months) than in playas that were not managed or that had shorter hydroperiods. Most invertebrate taxa (75%) were more abundant in moist-soil managed wetlands than in unmanaged wetlands. Invertebrate familial richness and diversity were greater in moist-soil managed playas than in unmanaged playas, but initial flooding date had little effect on invertebrate diversity. Planorbidae snails were the most abundant invertebrate taxon. A combination of moist-soil management and early fall (September) water application is an effective tool to increase invertebrate density, biomass, and diversity in playas for migratory birds.

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“…Stewart and others (1994) reported total soil N ranging from 3,000 to 4,000 milligrams per kilogram (mg/kg) and soil phosphorus (P) to be 2,000 mg/kg from playas receiving wastewater from beef and dairy lots. By comparison, soils of playas not receiving feedlot wastewater had approximately 168 mg/kg total N and 28 mg/kg total P (Haukos and Smith, 1996). However, other studies have shown that playa wetlands are effective at filtering nutrients (N and P) through biomass uptake (Pezzolesi and others, 1998).…”

Section: Subsurface Processes Affecting Recharge Chemistrymentioning

confidence: 94%

Recharge rates and chemistry beneath playas of the High Plains aquifer: A literature review and synthesis

Gurdak¹,

Roe²

2009

Circular

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Playas are ephemeral, closed-basin wetlands that are important zones of recharge to the High Plains (or Ogallala) aquifer and critical habitat for birds and other wildlife in the otherwise semiarid, shortgrass prairie and agricultural landscape. The ephemeral nature of playas, low regional recharge rates, and a strong reliance on ground water from the High Plains aquifer has prompted many questions regarding the contribution of recharge from playas to the regional aquifer. Considerable scientific debate has led to more than 175 publications about the potential for water to infiltrate the relatively impermeable playa floors and subsequently recharge the High Plains aquifer. Since the early 1900s, many conceptual models about recharge beneath playas have been proposed. Some early conceptual models indicate that playas are evaporative pans that do not allow recharge beneath playas, whereas other more recent models indicate that playas are effective recharge basins. A variety of data supports various aspects of these competing conceptual models. The competing conceptual models have developed because of the sporadic nature of rainfall to the region, the large number of playas in the region (more than 66,000), a range of physical characteristics in playas, the relatively thick unsaturated zones (often greater than 100 feet) separating most playas from the regional water table, and the inherently uncertain nature of most methods used to estimate recharge. An accurate understanding of recharge rates beneath playas is important from the perspective of groundwater management and the sustainability of rural agricultural economies, particularly in light of the substantial water-level declines in the High Plains aquifer. Other environmental concerns, such as erosion and transport of sediment and contaminants from surrounding land and modification of playas to allow artificial recharge, also have made accurate understanding of recharge an important priority from the perspective of wetland function and habitat health, protecting groundwater quality, and the substantial costs associated with land and water management, conservation, and regulation. To address these questions and concerns, the U.S. Geological Survey, in cooperation with the Playa Lakes Joint Venture, present a review and synthesis of the more than

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Effects of moist-soil management on playa wetland soils

Cited by 10 publications

References 17 publications

Plant communities of playa wetlands in the southern Great Plains /

Plant communities of playa wetlands in the southern Great Plains /

Invertebrate Response to Moist-Soil Management of Playa Wetlands

Recharge rates and chemistry beneath playas of the High Plains aquifer: A literature review and synthesis

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