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[ Bryophytes ] [ Fish ] [ Fungi ] [ Reptiles and Amphibians ] [ Water Treatment ] [ Mentors ]
 

The Project Pathways Biodiversity Summer Institute was made possible by the NSF-STEP Program at Eastfield College in collaboration with the Big Thicket National Preserve. The purpose of the program is to encourage students to consider careers in the sciences by providing them with hands on experience and access to sophisticated research equipment that is not usually available at the undergraduate level.

During the first part of the project the students had the opportunity to work side by side with faculty and graduate student mentors from collaborating research institutions including:

Texas A&M University, Sam Houston State University, the National Park Service at the Big Thicket National Preserve and mycologist, David Lewis.

Mentors
Michael Black (photographer)
Dr. Bryan Boulanger
Dr. Jerry Cook
Dale Kruse
David Lewis
Graduate Students
Eastfield College Professors

 
The students spent the rest of the summer working on their research project at the NSF-STEP Microscopy Lab on campus.

They used state of the art equipment such as the scanning electron microscope in their research.

On July 29, 2009 each student gave an oral presentation of their experimental results and also received achievement certificates for their efforts in the Eastfield College science building.

Bryophytes
Mentors:

 

Stephanie Campos

Stephanie Campos
This study focused on the sedge family Cyperaceae, in particular the genus Rhynchospora, on a controversy among the taxonomic grouping of one species.

Measurements were taken of the achene dimensions of two species Rhynchsopora scutellata (considered endemic to South America) and Rhynchospora indianolensis (considered endemic to Texas east coast) to determine whether or not they may be the same species.

Structural measurements of the achene body, tubercle, and sulcus were compared in this study.
 
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
image from SEM image from SEM image from SEM
 


Bryophytes
Mentors:

 

Rocio Santiago

Rocio Santiago
The project was to compare the lamellar characters of A. angustatum (Brid.) B.S.G (Polytrichaceae) in the Big Thicket National Preserve, Southeast Texas with previously recorded data in literature.
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
image from SEM image from SEM image from SEM image from SEM
 

Fish
Mentors:

 

Mary Blake

Mary Blake
This experiment was designed to gain further knowledge on growth of the sensory system on certain fish scales. In particular, the scales housing the Lateral Lines of Cyprinella venusta. To do this, specific factors were studied.

The first was the maturity of the lateral line system to see if it changed at all during the fish’s life.

The next factor observed and monitored was the growth of the scales in which the lateral lines were located.
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
image from SEM image from SEM image from SEM image from SEM
 

Fungi
Mentors:

 

Charles Bannister

Charles Bannister
Project involved studying the surface morphology of Entolomataceae family using the Hitachi S-3400N to determine if there were similarities in size and structure among family.

Specimens used in this research were collected from David Lewis’ herbarium located at the Big Thicket Field Research Station.
 
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
 

Fungi
Mentor: David Lewis

 

James Mueck

James Mueck
Project involved the measurements of spores and the analysis of spore structures in six genera of mushrooms in the family Cortinariaceae.

Using the Hitachi TM-1000 and the S-3400N scanning electron microscopes, this study was done in order to see if there was enough variation between the size and structure of the spores for use in identification.
 
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
image from SEM image from SEM image from SEM
 

Reptiles and Amphibians
Mentors:

 

Jamison Hammett

Jamison Hammett
This project studied habitat preferences of Rana sphenocehphala in the Big Thicket National Preserve.

Results showed definite ecological tendencies of the frog, especially a preference for shady areas.
 
click thumbnails below for larger view
Field Pictures
Jamison in the field Jamison in the field Jamison in the field Jamison in the field
 

Reptiles and Amphibians
Mentors:

 

Aracely Vazquez

Aracely Vazquez
Nonliving snake specimens were collected from the roads of the Big Thicket National Preserve for a comparative analysis of dentition; Elaphe obsoleta lindheimerii, Crotalus horridus atricaudatus, Nerodia erythrogaster flavigaster, and Agkistrodon piscivorus leucostoma.

The right lower mandible from each of the four snakes was removed and observed using the Hitachi S-3400N scanning electron microscope. Micrographs were used to determine if any considerable difference in dentition existed between the terrestrial and aquatic snakes.
 
click thumbnails below for larger view
Field Pictures
Microscopic Lab Images
 

Water Treatment
Mentors:

 

Nathaniel Dulin

Nathaniel Dulin
This research was a comparison of the water quality of the Big Thicket to that of the Trinity River, with an emphasis on water hardness.
 
click thumbnails below for larger view
The SEM equipment was not needed for this project
 

Water Treatment
Mentors:

 

Mark Riofta

Mark Riofta
This research was to analyze surface water from North and South Texas with a focus on two essential elements. The primary objective was to determine nutrient concentration at sample locations.

The second objective was to compare results between North Texas (NTX) and Big Thicket National Preserve (BTNP) surface water with water quality standards set by the U.S. Environmental Protection Agency (EPA).
 
The SEM equipment was not needed for this project
Field Pictures
 


Eastfield College Cohorts
Dr. Jean Conway -
Interim President
Michael Gutierrez -
V.P. Teaching and Learning
Gretchen Riehl - Dean, Science and Physical Education

Dr. Carl Knight -
Principal Investigator and Professor of Anatomy and Physiology
Melanie Gill-Shaw -
CO-Principal Investigator and Resource and Community Development
John Teel -
NSF-STEP Grant Manager
Jeff Hughes -
Biology Professor
Jessica Silva -
NSF-STEP SEM Lab Coordinator
   

This program was funded by grant Award # DUE 0525536, from the National Science Foundation to Eastfield College,
one of the seven Dallas County Community Colleges, located at 3737 Motley Drive, Mesquite, TX 75150.