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Tisza River, Hungary

Tisza River, Hungary

Tisza River, Hungary

Tisza River, Hungary

D. Marie Weide, Ph.D.

Clinical Assistant Professor

Department of Environment and Sustainability

University at Buffalo

601 Clemens Hall, Buffalo, NY 14260

As a paleolimnologist, I merged my interests in anthropology, paleontology, biogeography, and paleoecology to reconstruct the past. I am interested in using lake sediments to understand how humans have affected and been affected by their environments. Recently, I collaborated with archaeologists to better understand how ancient humans interacted with the landscape on the shores of Lake Titicaca.

My teaching philosophy is to inspire students to be life-long learners who think critically and are scientifically literate. My techniques include lectures, discussions, and in-class activities. I use my research experience and data to create exercises that allow them to be part of the scientific process.

water lily



My overarching philosophy is to promote a literacy of science, systems-thinking, and passion for learning, regardless of academic level. I endeavor to maintain a balance between lectures, in-class discussion, and hands-on activities. My classes focus on creating an environment that fosters mutual respect, inclusivity, and exchange of ideas.


I strive to interest students in all scientific disciplines in a way that inspires them to become life-long learners. To accomplish this, I bring my research and my passion for my research into the classroom. In addition, I make the course content applicable and relevant to their majors, encouraging them to directly relate class projects to their field of study. To foster scientifically literate students and citizens, I assign a learning activity that challenges them to think critically about a new scientific finding and the manner in which the finding is discussed within the mass media. Students are encouraged to discuss how personal and societal biases impact our understanding of scientific findings and their implications. I endeavor to create students who are proficient writers. Small writing assignments throughout the semester allow students to put their thoughts into words and become accustomed to writing. These assignments also help them to expand their vocabulary and create their own voices. I aim to teach students how to think critically about dynamic systems. I use a serious role-playing game I created to teach systems thinking and decision-making.


EVS 199-Extinctions!
EVS 321-Environmental Impact of War
EVS 326-Great Lakes Ecology
EVS 350-Water Quality
EVS 411/511-Marine Ecology
EVS 452-Limnology
EVS 472-Tropical Systems


I use diatoms in lake sediments to reconstruct past environments in order to understand how humans have changed the landscape and aquatic ecosystems. I work with a group of scientists that include archaeologists, geochemists, and palynologists to gain insight into how we can mitigate the effects of current environmental change. I am also interested in diatom morphology and how it changes through time. Diatoms appear to have incredibly high within species variation. How do these variations come about and what is their adaptive significance?

  • Holocene Lake Levels in Lake Titicaca

    To reconstruct lake-level history at multi-decadal resolution, over the past 7,000 years, used diatoms from sediment cores taken from the Huinaimarca Basin. The result was the most detailed reconstruction for the Titicaca Basin to date, and it demonstrates that the lake level fluctuated on a sub-century scale, providing a highly variable environment for the inhabitants of the shoreline.

  • Recent Changes in Diatom Flora at Ho Ba Be, Viet Nam

    My research with Dr. Lora Stevens focused on diatom assemblages from Lac Ba Bê in the northern mountains of Viêt Nam. The sediment core spanned the last 500 years, but the most striking feature of the core is the change in diatom assemblages in the top 4 cm of the core (late 1970s/early 1980s). The dominant species in this section require relatively low nutrients when compared to diatoms in the rest of the core. In addition, it marks the introduction of two Cyclotella species that become the dominant planktic species and a related decline in Aulacoseira species.

  • Upper Permian African Biogeography

    Prior to my life as a diatomist, I worked on basal synapsids of Tanzania with Dr. Christian Sidor at the University of Washington. These projects focused on the biostratigraphic record of the Upper Permian, Usili Formation in the Ruhuhu Basin and how they differed from the Karoo Fauna.

Pinnularia species
Aulacoseira species



Weide, DM, Fritz, SC, Hastorf, C, Bruno, M, Baker, P, Salenbien, W, and Guedron, S. 2017. Lake-level fluctuations of Lago Huiñaimarca, Lake Titicaca, (Peru/Bolivia) during human occupation of the Basin during the last ~6,000 years. Quaternary Research 88(2). DOI: 10.1017/qua.2017.49.

Weide, DM, Fritz, SC, Brinson, B, Thompson, LG and Billups. 2017. Freshwater diatoms in the Sajama, Quelccaya, and Coropuna glaciers of the South American Andes. Diatom Research 32(1-2). DOI: 10.1080/0269249X.2017.1335240.

Weide, DM. 2015. Aulacoseira stevensiae sp. nov. (Coscinodiscophyceae, Bacillariophyta), a new diatom from Ho Ba Be, Bac Kan Province, Northern Viet Nam. Diatom Research 30(3): 263-268.DOI: 10.1080/0269249X.2015.1074114.

Sidor, CA, Angielczyk, KD, Weide, DM, Smith, RMH, Nesbitt, S and Tsuji, LA. 2010. Tetrapod fauna of the lowermost Usili Formation (Songea Group, Ruhuhu Basin) of southern Tanzania, with a new burnetiid record. Journal of Vertebrate Paleontology 30:696-703.DOI:10.1080/02724631003758086.

Weide, DM, Sidor, CA, Angielczyk, KD, and Smith, RMH. 2009. A new record of Procynosuchus delaharpeae (Therapsida: Cynodontia) from the Upper Permian Usili Formation, Tanzania. Palaeontologica Africana Dec 2009. DOI: 10539/13808.


Weide, DM, MC Bruno, CA Hastorf & SC Fritz. The decoupling of environment and political change in the prehistoric southern Titicaca Basin. Presented at Society for American Archaeology symposium: Exploring Prehistoric Perceptions of ‘Nature’: Can We Go Beyond Economic Human-Environment Interactions? Vancouver, British Columbia, March 30, 2017.

Weide, DM, Fritz, S, Hastorf, C, Salenbien, W, Baker, P and Guedron, S. A Late Holocene Lake-Level Reconstruction of Lago Huiñaimarca, Southern Lake Titicaca, Peru/Bolivia. Presented at the 6th International Limnogeology Congress, Reno, NV, Jun. 2015.

Salenbien, W, Weide, DM, Develle, AL, Baker, PA, Fritz, SC and Guedron, S. The Influence of Sampling Density on Bayesian Age-Depth Models & Paleoclimatic Reconstructions: Lessons Learned from Lake Titicaca (Bolivia/Peru). Presented at the 47th AGU Fall Meeting, San Francisco, CA, Dec. 2014.

Weide, DM and Stevens, LR. 2012. Late Holocene environmental Change in Lac Ba Be, Viet Nam. Poster presented at the 12th International Paleolimnology Symposium, Glasgow, Scotland, UK, August 2012.

Weide, DM. Biostratigraphy and the Karoo Basins. Poster presented at Northwest Geological Society, Seattle, WA, May 2009. Awarded 2nd place for poster presentation.

Weide, DM, Sidor, CA, Angielczyk, KD, and Smith, RMH. A new record of Procynosuchus delaharpeae (Therapsida: Cynodontia) from the Upper Permian Usili Formation (Ruhuhu Basin), Tanzania. Poster presented at the Society of Vertebrate Paleontology Annual Meeting, Cleveland, OH, Oct 2008.

Weide, DM and Dirkmaat, DC. Description of a Forensic Anthropological Recovery, Identification & Interpretation in Fayette County, PA. Talk presented at North East Forensic Anthropology Association (NEFAA) Annual Meeting, Peabody Museum, Boston, MA, Nov 2000.