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  • Stroud Water Research Center: LTREB White Clay Creek
    Pennsylvania Project Site The White Clay Creek watershed like most of the Eastern North American landscape experienced dramatic anthropogenic disturbances over a relatively short time period 300 years These are characterized by deforestation for lumber charcoal and agriculture and more recently the broad scale creation of impervious surfaces introduction of pesticides increased use of fertilizers and atmospheric deposition of nitrogen from the combustion of fossil fuels These landscape and landuse changes have generated conditions that stress stream ecosystems however little is known about how streams in the Piedmont physiographic province have responded to these stresses Even less is known about how streams respond as the disturbed landscapes recover When Stroud Water Research Center was established in 1967 the agriculturally dominated watershed contained an upstream riparian forest of 60 to 100 year old trees and downstream meadows subject to cattle grazing Initially several long term sampling reaches on the White Clay Creek were selected including woodland and meadow reaches When cattle were removed from the meadow reach adjacent to the laboratory the riparian zone became colonized by multiflora rose Rosa multiflora Thunb Over a 23 year period the multiflora rose grew to border the stream in a swath that was 3 meters tall and 5 meters wide In 1989 the Center began a riparian zone restoration and reforestation project with the goal of reestablishing a contiguous deciduous forest extending through the meadow reach upstream to headwater spring seeps 3 km away Multiflora rose plants were uprooted and tree seedlings of native species were planted Between 1988 and 1994 five lateral transects from the uplands to the stream were instrumented with wells lysimeters and in stream piezometers In 1997 the reforestation project was extended into a meadow downstream of the laboratory Terrain map of White Clay Creek Watershed with well transects and

    Original URL path: http://www.swrc.org/research/projects/ltreb/wcc/site.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB White Clay Creek
    present Continuous Chemistry Data Water chemistry is presented as the concentration based on a periodic grab sample Parameter Site Period of Record Frequency Nutrients NO 3 NO 2 NH 3 PO 4 Woodland 1969 present Weekly 1969 1995 monthly 1996 present Meadow 1996 present Storms once season Springs tributaries 1969 1989 Once to several times annually Wells lysimeters 1994 1997 Every other month 1994 1997 1998 present periodic Nutrients TKN TP Woodland 1996 present Monthly Cations Ca K Mg a Zn Cu Mn Fe Woodland 1969 present Weekly 1969 1995 monthly 1996 present Meadow 1996 present Storms once season Anions SO 4 Cl Woodland 1969 present Weekly 1969 1995 monthly 1996 present Meadow 1996 present Storms once season pH alkalinity Woodland 1969 present Weekly 1969 1995 monthly 1996 present Conductivity Meadow 1994 present Daily each storm Wells lysimeters 1994 1997 98 present Every other month Periodic Dissolved Organic Carbon Meadow 1972 1975 Weekly to monthly seasonal storms 1978 1994 Daily to weekly seasonal storms 1995 present Daily all storms Wells lysimeters 1988 1997 1998 present Weekly to every other month Periodic Tributaries springs 1978 present Periodic Classes of Organic Compounds lipids carbohydrates phenolics amino acids Meadow tributaries springs 1972 present Periodic Amino acid molecules Meadow 1993 present Seasonal storms Carbohydrate molecules Meadow wells lysimeters springs 1994 1996 1997 present Weekly seasonal storms Periodic Humic substances Meadow wells lysimeters 1993 1997 Monthly Humic Bound Lignin Phenols Meadow woodland wells lysimeters 1993 1997 Periodic Biodegradable DOC Meadow 1992 present Weekly Wells lysimeters 1994 present Periodic Pesticides Meadow woodland tributaries 1993 1997 Periodic Seston Woodland 1993 present Weekly Meadow 1995 present All storms Biological Data Parameter Site Period of Record Frequency Suspended chlorophyll Woodland 2001 2004 2005 present Monthly Weekly Benthic Organic Matter Woodland 1976 1997 Seasonal Meadow 1997 Seasonal Tributaries 1991 Seasonal

    Original URL path: http://www.swrc.org/research/projects/ltreb/wcc/data.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB White Clay Creek
    J D Newbold S A Thomas M T Monaghan G W Minshall and C E Cushing 2003 Comparison of corn pollen and natural fine particulate matter transport in streams can pollen be used as a seston surrogate Journal of the North American Benthological Society 22 2 15 Hodkinson I D and J K Jackson 2005 Terrestrial and aquatic invertebrates as bioindicators for environmental monitoring with particular reference to mountain ecosystems Environmental Management 35 649 666 Request PDF Hogan K R 2008 Spatial and temporal variation in streambed bacterial community composition and correlation with environmental variables Ph D dissertation University of Pennsylvania Philadelphia Horwitz R J W C Hession and B W Sweeney 2000 Paired comparisons of effects of type of riparian vegetation on stream fishes Implications for restoration American Water Resources Association 197 202 Hullar M A J L A Kaplan and D A Stahl 2006 Recurring seasonal dynamics of microbial communities in stream habitats Applied and Environmental Microbiology 72 713 722 Request PDF Jackson J K and L Fureder 2006 Long term studies of freshwater macroinvertebrates a review of the frequency duration and ecological significance Freshwater Biology 51 591 603 Request PDF Kaplan L A A K Aufdenkampe J D Newbold and G M Hornberger Hydrologic regulation of dissolved organic matter biogeochemistry from forests through river networks NSF EAR 0450331 Kaplan L A T L Bott J K Jackson J D Newbold and B W Sweeney 2008 Protecting Headwaters The scientific basis for safeguarding stream and river ecosystems A research synthesis from the Stroud Water Research Center Request PDF Kaplan L A R H Findlay J D Newbold and P H Ostrom The application of scaling rules to energy flow in stream ecosystems NSF DEB 0109122 Kaplan L A S Gill A K Aufdenkampe J D Newbold Integrating the carbon and water cycles within an ecosystem esthetic approach to landscapes NSF DRL 0917930 Kaplan L A D A Stahl P G Hatcher R H Findlay M A Palmer Dissolved organic matter biogeochemistry Linking ecosystem processes community structure and microbial dynamics in streams NSF DEB 9904047 Kaplan L A and J D Newbold 2000 Surface and subsurface dissolved organic carbon pp 237 258 In J B Jones and P J Mulholland eds Streams and Ground Waters Academic Press Kaplan L A and J D Newbold 2003 The role of monomers in stream ecosystem metabolism pp 97 119 In S E G Findlay and R L Sinsabaugh eds Aquatic Ecosystems Interactivity of Dissolved Organic Matter Academic Press Kaplan L A J D Newbold R H Findlay and P H Ostrom The application of scaling rules to energy flow in stream ecosystems NSF DEB 0516449 Kaplan L A T N Wiegner J D Newbold P H Ostrom and H Gandhi 2008 Untangling the complex issue of dissolved organic carbon uptake a stable isotope approach Freshwater Biology 53 855 864 101111 j 1365 2427 2007 01941x Request PDF Kaplan L A R L Sleighter R M Cory and P G Hatcher 2013 ASLO

    Original URL path: http://www.swrc.org/research/projects/ltreb/wcc/accomplishments.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB Costa Rica
    hydrologically ecologically and taxonomically diverse Its environments range from extensive dry forest in the lowlands and foothills near the Pacific Ocean to cloud forest atop the mountains and rain forest on the Caribbean foothills view large map of ACG In 1999 the ACG was inscribed as a UNESCO World Heritage site representing the best dry forest habitats from Central America to northern Mexico ACG is also the site of the largest forest restoration project in the tropics with the ultimate goal of reestablishing a major tropical dry forest wildland from large remnants of pristine forest and reclaimed pasturelands ACG World Heritage site View larger map Today the ACG is a mosaic of successional stages most mid elevation i e 200 500 m a s l hill slopes are still open grasslands savannahs while other areas have already developed young forests Extensive changes in species composition and productivity are expected as trees grow and early colonizing species are replaced by slow dispersing and shade tolerant species Forest regeneration will make the ACG watersheds not only invaluable biodiversity resources but irreplaceable reference points for understanding the ecology of former dry forest landscapes that surround the ACG and are being converted and managed as multi purpose agroforests At a time when tropical habitats are increasingly deforested and fragmented this represents a unique research opportunity to study 100s of kilometers of streams flowing beneath a dry forest canopy Rivers and streams of the ACG View larger map With the backdrop of a natural and successional mosaic we established the small to intermediate size streams of the ACG as a LTREB site in the Central American tropical forest We will address hypotheses regarding the response of stream ecosystems to large scale passive restoration of tropical forests and to a steep moisture gradient with spatial and

    Original URL path: http://www.swrc.org/research/projects/ltreb/costarica/acg.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB Costa Rica
    Stream Research and Data Estación Maritza is located near the banks of the Río Tempisquito and within easy walking distance of five other permanent streams that are all tributaries of the Río Tempisque These streams have been the focus of many of our studies of stream ecology and biogeochemistry Our efforts have also extended to permanent and temporary streams near other research facilities such as Santa Rosa Cacao San Cristóbal and Pitilla Characteristics of the six study catchments initially studied near Maritza Stream Catchment area km 2 Mean streamflow m 3 s Run off m yr Elevation range m Río Tempisquito 3 19 0 30 2 9 580 1340 Río Tempisquito Sur 3 11 0 42 4 3 580 1250 Quebrada Kathia 2 64 0 26 3 1 600 1540 Quebrada Marilin 0 36 0 018 1 6 590 880 Quebrada El Jobo 0 55 0 025 1 4 590 1040 Quebrada Zompopa 0 37 0 033 2 8 600 1100 Data for streams of the ACG primarily Río Tempisquito and Quebrada Marilin near Estación Maritza include physical chemical and biological variables Hydrograph at Río Tempisquito Data collected regularly since 1990 Air temperature Seston Rainfall Litter and leaf Stream discharge stage height Adult aquatic insect collections Water temperature Data collected at various times and frequencies Inorganic nutrients Carbohydrate molecules Base cations Amino acid molecules Anions Tetramethyl ammonium hydroxide GC MS profiles pH Pesticides Alkalinity Bacterial densities Conductivity Bacterial species TRFLP profiles Dissolved organic carbon Diatom species list and densities Biodegradable DOC Larval aquatic insect collections Accessing Data We are happy to share data collected for this project and to collaborate in its interpretation Proposals for collaboration should be directed to John Jackson Access data now Explore LTREB Overview LTREB White Clay Creek LTREB Costa Rica Overview Área de Conservacíon Guanacaste

    Original URL path: http://www.swrc.org/research/projects/ltreb/costarica/stream_research.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB Costa Rica
    Costa Rica Investigators More than two dozen investigators from Stroud Water Research Center and 14 other institutions that have worked on the LTREB Costa Rica study and a considerable number of peer reviewed publications have resulted from it Stroud Water Research Center Bern Sweeney John K Jackson Louis A Kaplan J Denis Newbold Thomas L Bott Anthony K Aufdenkampe Past investigators with Stroud Water Research Center Robin L Vannote Carlos de la Rosa Laurel J Standley Investigators with other affiliations Arturo Sánchez Azofeifa University of Alberta Julio C Calvo Instituto Tecnologico de Costa Rica R Wills Flowers Florida A M University Leo Füreder University of Innsbruck Ralph W Holzenthal University of Minnesota Roger J Blahnik University of Minnesota Bill P Stark Mississippi College William P Coffman University of Pittsburgh John H Epler Gordon Pritchard University of Calgary Eduardo Domínguez Universidad Nacional de Tucumán Carlos Molineri Universidad Nacional de Tucumán Oliver S Flint Smithsonian Institution Atilano Contreras Ramos UAEH Pachuca Mexico Fernando Muñoz Quesada University of Minnesota W Patrick McCafferty Purdue University Robert W Waltz Indiana Division of Entomology David Baumgardner Texas A M University Explore LTREB Overview LTREB White Clay Creek LTREB Costa Rica Overview Área de Conservacíon Guanacaste Maritza

    Original URL path: http://www.swrc.org/research/projects/ltreb/costarica/investigators.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB Costa Rica
    Saá Quintana Miquel 2008 Intercepción de la precipitación en tres estadios de sucesion del Parque Nacional Guanacaste Costa Rica Thesis Tesis para optar por el grado de Licenciado en Ingenieria Forestal Instituto Tecnoligico de Costa Rica Escuela de Ingenieria Forestal Cartago Costa Rica Epler J H C L de la Rosa 1995 Tempisquitoneura a new genus of Neotropical Orthocladiinae Diptera Chironomidae symphoretic on Corydalus Megaloptera Corydalidae Journal of the North American Benthological Society 14 50 60 Findlay R H C Yeates M A J Hullar D A Stahl and L A Kaplan 2008 Biome level biogeography in streambed microbiota Applied and Environmental Microbiology 74 3014 3021 Frazier S W L A Kaplan and P G Hatcher 2005 Molecular characterization of biodegradable dissolved organic matter using bioreactors and 12C 13C tetramethylammonium hydroxide thermochemolysis GC MS Environmental Science and Technology 39 1479 1491 Request PDF Füreder L 1994 Drift patterns in Costa Rica streams Ph D Thesis Innsbruck University Austria Gotsch S G 2006 Seasonal water stress and leaf traits in the tropical forests of northwestern Costa Rica Ph D Dissertation State University of New York Stony Brook Gotsch S G J S Powers and M T Lerdau 2010 Variation in leaf traits of 12 evergreen species that grow in Costa Rican wet and dry forests shifting leaf trait networks and novel leaf trait relationships Plant Ecology 211 133 146 Guzmán Arias I and J C Calvo Alvarado 2013 Planificación del recurso hídrico en América Latina y el Caribe Tecnología en Marcha Costa Rica 26 3 18 Guzmán Arias I and Calvo Alvarado J C 2012 Recursos hídricos de la Cuenca Alta del Rio Tempisque Costa Rica nota técnica Tecnología en Marcha Costa Rica 25 4 63 70 Holzenthal R W 1995 The caddisfly genus Nectopsyche new gemma group species from Costa Rica and the Neotropics Trichoptera Leptoceridae Journal of the North American Benthological Society 14 1 p 61 83 Holzenthal R W and R J Blahnik 1995 New species of Smicridea Rhyacophylax Trichoptera Hydropsychidae from Costa Rica Entomological News 106 5 212 223 Jackson J K and B W Sweeney 1995 Tropical stream and river research Introduction to a series of papers Journal of the North American Benthological Society 14 2 4 Request PDF Jackson J K and B W Sweeney 1995 Present status and future directions of tropical stream research Journal of the North American Benthological Society 14 5 11 Request PDF Jackson J K and B W Sweeney 1995 Egg and larval development times for 35 species of tropical stream insects from Costa Rica Journal of the North American Benthological Society 14 115 130 Request PDF Jiménez Rodríguez C 2010 Intercepción de lluvia en tres estadios sucesionales del Bosque seco Tropical Parque Nacional Santa Rosa Costa Rica Thesis Tesis para optar por el grado de Licenciado en Ingeniería Forestal Instituto Tecnológico de Costa Rica Escuela de Ingenieria Forestal Cartago Costa Rica Kim S L A Kaplan and P G Hatcher 2006 Biodegradable dissolved organic matter in a temperate and

    Original URL path: http://www.swrc.org/research/projects/ltreb/costarica/publications.shtm (2016-04-27)
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  • Stroud Water Research Center: LTREB Costa Rica
    mountains that separate the hot dry 1000 mm rain per year plains near the Pacific ocean and the warm wet 3000 mm of rain per year lowland rain forests of the Caribbean Based on data from 1990 2006 Maritza has a strong seasonal climate total rainfall averaged 2748 mm yr 9 feet yr with 93 of total precipitation occurring during an 8 month wet season May Dec 100 mm rain per month and only 7 during a 4 month dry season Jan Apr Sep 460 mm and Oct 472 mm are the wettest months and Mar 23 mm and Apr 29 mm are the driest months Air temperature also exhibited a seasonal pattern albeit not as dramatic as for rainfall Maximum air temperature at Maritza averaged 27 2 C 81 F while minimum air temperature averaged 20 4 C 69 F a difference of only 6 8 C 12 F Apr max 29 5 C min 20 8 C and May max 28 7 C min 21 1 C were the warmest months while Dec max 25 5 C min 19 9 C and Jan max 25 6 C min 18 9 C were the coolest months Wind velocity has not been measured but can be extremely high during the dry season months of January through March These winds reflect an orographic interaction between the northeast trade winds and the Cordillera de Guanacaste Meterological data were collected manually at Maritza with daily records of maximum and minimum air temperature and total precipitation 24 h period beginning at 0700 h Daily air temperature and precipitation collected manually span 1990 to present Air temperature and precipitation at Santa Rosa are also available from the ACG 1979 present while the Stroud Water Research Center has collected precipitation data 1998 present and air temperature

    Original URL path: http://www.swrc.org/research/projects/ltreb/costarica/climate.shtm (2016-04-27)
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