Show simple item record

dc.contributor.advisorAufdenkampe, Anthony
dc.contributor.authorJolly, Seema
dc.descriptionvi, 25 p.en_US
dc.description.abstractNitrate (N03-) input from fertilizer contaminates surface and groundwater, which can be detrimental to the functioning of ecosystems, decrease biodiversity in streams, as well as cause health problems in humans. In this study, we investigated N03- processing in 2nd and 3rd order streams in the White Clay Creek watershed in southeastern Pennsylvania to determine if denitrification in riparian zones was responsible for decreasing N03- concentrations in groundwater. Isotopic abundances of 15 N and 18 0 can be utilized to investigate the processing of N03-. We found varying N03- concentrations in groundwater wells that were close in proximity to each other (0.076 mg N/L- 2.814 mg N/L). In most sites, we observed an enrichment of 0 15 N as In[N03-] decreased, suggesting that denitrification may be one of the processes that N03- undergoes in groundwater. In order to further elucidate the processes that N03-undergoes, however, it is important to continue isotopic investigations and conduct other water chemistry analyses. These studies can be useful to identify the impact of agricultural input of N03- on stream ecosystems, as well as to determine biological processes that alter these inputs, thereby minimizing the negative effects of N03- on stream ecosystems.en_US
dc.description.sponsorshipStroud Water Research Center. Avondale, Pennsylvania.
dc.publisherKalamazoo Collegeen_US
dc.relation.ispartofKalamazoo College Biology Senior Individualized Projects Collection
dc.relation.ispartofseriesSenior Individualized Projects. Biology;
dc.rightsU.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.
dc.titleAn isotopic investigation of nitrate processing in shallow groundwater in the White Clay Creek watershed, Pennsylvaniaen_US
KCollege.Access.ContactIf you are not a current Kalamazoo College student, faculty, or staff member, email to request access to this thesis.

Files in this item


This item appears in the following Collection(s)

  • Biology Senior Individualized Projects [1489]
    This collection includes Senior Individualized Projects (SIP's) completed in the Biology Department. Abstracts are generally available to the public, but PDF files are available only to current Kalamazoo College students, faculty, and staff.

Show simple item record